WO2015072580A1 - 細胞増殖促進または細胞障害抑制による角膜内皮治療薬 - Google Patents
細胞増殖促進または細胞障害抑制による角膜内皮治療薬 Download PDFInfo
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- A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
- A61K31/4439—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a five-membered ring with nitrogen as a ring hetero atom, e.g. omeprazole
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- A61K31/41—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with two or more ring hetero atoms, at least one of which being nitrogen, e.g. tetrazole
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- A61K31/4155—1,2-Diazoles non condensed and containing further heterocyclic rings
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- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/4353—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems
- A61K31/437—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems the heterocyclic ring system containing a five-membered ring having nitrogen as a ring hetero atom, e.g. indolizine, beta-carboline
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- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
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- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
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- A61K31/00—Medicinal preparations containing organic active ingredients
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- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
- A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
- A61K31/4418—Non condensed pyridines; Hydrogenated derivatives thereof having a carbocyclic group directly attached to the heterocyclic ring, e.g. cyproheptadine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
- A61K31/535—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
- A61K31/5375—1,4-Oxazines, e.g. morpholine
- A61K31/5377—1,4-Oxazines, e.g. morpholine not condensed and containing further heterocyclic rings, e.g. timolol
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- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P27/00—Drugs for disorders of the senses
- A61P27/02—Ophthalmic agents
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
Definitions
- the present invention relates to a technique and method for culturing corneal endothelial cells in a normal state, and a drug and a medium therefor.
- Visual information is transmitted from the cornea, the transparent tissue on the foreground of the eyeball, to reach the retina and excite the neurons in the retina. To be recognized.
- the cornea needs to be transparent.
- the transparency of the cornea is maintained by keeping the water content constant by the pump function and the barrier function of corneal endothelial cells.
- Human corneal endothelial cells exist at a density of about 3000 cells per square millimeter at birth, but do not have the ability to regenerate once damaged.
- bullous keratopathy caused by corneal endothelial degeneration or corneal endothelial dysfunction due to various causes, the cornea becomes edema and turbidity, resulting in a significant loss of visual acuity.
- full-thickness keratoplasty is performed in which all three layers of the corneal epithelium, parenchyma and endothelium are transplanted.
- the cornea donation in Japan is insufficient, and the number of corneal transplants performed in Japan is about 1700 per year for about 2600 waiting patients for corneal transplantation.
- the cornea is located in front of the eyeball and is a transparent tissue mainly having a three-layer structure of a corneal epithelial cell layer, a corneal stroma layer, and a corneal endothelial cell layer.
- the corneal endothelial cell layer is a single cell layer present in the deep corneal layer, has a barrier function and a pump function, and plays a role of maintaining the transparency of the cornea by keeping the water content of the cornea constant.
- Patent Document 1 is an outline of local therapy for diseases of the ocular surface.
- Non-Patent Document 1 describes the effect of inhibitors on freezing treatment in p38 corneal endothelium.
- Non-Patent Document 2 describes the effect of p38 MAP kinase on loss of barrier function in TNF ⁇ -induced corneal endothelium.
- Non-Patent Documents 3 and 4 describe treatment methods for corneal epithelial cells using p38 kinase.
- Non-Patent Document 5 describes the involvement of the p38 MAP kinase signal in the fibrotic wound repair process.
- Non-Patent Document 6 describes the relationship between corneal endothelial cell migration and MAP kinase.
- Non-Patent Document 7 describes the relationship between corneal endothelial injury and TGF ⁇ .
- Non-Patent Document 8 describes the association with TGF ⁇ for regenerative healing for corneal wounds.
- Non-Patent Document 9 describes the relationship between corneal endothelial cells and TGF ⁇ .
- the present inventors have found that a p38 MAP kinase inhibitor can be used for the treatment or prevention of corneal endothelial injury requiring cell proliferation, and have completed the present invention. Therefore, the present invention typically provides the following.
- the corneal endothelial disorder is at least one selected from the group consisting of Fuchs corneal endothelial dystrophy, sustained decrease in corneal endothelial density after corneal transplantation, trauma, ophthalmic surgery, aging, and corneal endotheliitis
- the therapeutic or prophylactic agent according to item (1) wherein (3) The therapeutic or prophylactic agent according to item (1) or (2), wherein the p38 MAP kinase inhibitor is water-soluble.
- the p38 MAP kinase inhibitor is 4- (4-fluorophenyl) -2- (4-hydroxyphenyl) -5- (4-pyridyl) -1H-imidazole (SB-202190), trans-4- [ 4- (4-Fluorophenyl) -5- (2-methoxy-4-pyrimidinyl) -1H-imidazol-1-yl] cyclohexanol (SB-239063), 4- (4-fluorophenyl) -2- (4 -Methylsulfinylphenyl) -5- (4-pyridyl) -1H-imidazole (SB-203580), 4- (4-fluorophenyl) -5- (2-methoxypyrimidin-4-yl) -1- (piperidine- 4-yl) imidazole (SB-242235), 4- (4-fluorophenyl) -2- (4-hydroxy-1-butynyl) -1 (3-
- the p38 MAP kinase inhibitor includes 4- [4- (4-fluorophenyl) -2- (4-methylsulfinylphenyl) -1H-imidazol-5-yl] pyridine) (SB203580) or a salt thereof.
- the therapeutic or prophylactic agent according to any one of items (1) to (4).
- the p38MAP kinase inhibitor includes 4- [4- (4-fluorophenyl) -2- (4-methylsulfinylphenyl) -1H-imidazol-5-yl] pyridine) (SB203580) hydrochloride (1)
- the therapeutic or prophylactic agent according to any one of (5) to (5).
- a p38 MAP kinase inhibitor for the treatment or prevention of corneal endothelial injury requiring cell proliferation comprising a step of administering an effective amount of a p38 MAP kinase inhibitor to a subject in need thereof.
- Non-Patent Documents 1 and 2 analyzed the role of p38 MAP kinase in the corneal endothelium in special systems such as freezing treatment and loss of TNF ⁇ -induced barrier function, and also explained the effects of the inhibitors.
- the effect on corneal endothelial dysfunction requiring cell proliferation such as a wound (trauma) could not be predicted.
- the recovery of wounds and the like is extremely remarkable, and the healing effect is remarkable as compared with conventional pharmaceuticals, and it is understood that they are useful as eye drops.
- FIG. 1 shows that p38MAP kinase signal inhibition suppresses cyclin-dependent kinase inhibitors and shifts the cell cycle of corneal endothelial cells.
- Corneal endothelial cells cultured from research cornea imported from Seattle Eye Bank were cultured and used for the following studies.
- SB203580 a p38 MAP kinase inhibitor
- p27, p21, and p16 were all suppressed by adding SB203580 (A; p27, p21, p16, and GAPDH are shown in order from the top.
- the left lane is control, the center is SB203580 10 ⁇ M, and the right lane is SB203580 30 ⁇ M).
- p27, p21, and p16 have been reported to be cyclin-dependent kinase inhibitors that negatively regulate cell proliferation of corneal endothelial cells.
- phosphorylation of Rb protein and expression of cyclins D1 and D3 as molecules involved in the transition of the G1 / S phase of the cell cycle were examined by Western blotting. When SB203580 was added, these were 12 hours and 24 hours later, respectively. (B; two stages from the top indicate phosphorylated Rb protein, cyclin D1, cyclin D3, and GAPDH.
- the upper side indicates control and stimulation by the lower side SB203580 (10 ⁇ M).
- SB203580 10 ⁇ M
- SB203580 (C; phosphorylated p38, phosphorylated ATF2, GAPDH is shown, control from the left lane, SB203580 10 ⁇ M in the center, SB203580 30 ⁇ M in the right lane.
- FIG. 2 shows that p38MAP kinase signal inhibition promotes cell proliferation of corneal endothelial cells.
- the cultured human corneal endothelial cells were stimulated with SB203580, a p38 MAP kinase inhibitor, and immunostained with Ki67, a marker for cell proliferation, 3 days later.
- FIG. 3 shows that p38 MAP kinase inhibitor instillation promotes wound healing in a rabbit partial corneal endothelial dysfunction model.
- the SB203580 instillation group was smaller than the control (left panel photograph, each lower side).
- the wound area was significantly reduced in the SB203580 instillation group (right graph, vertical axis indicates wound area (mm 2 ), right is DMSO (control), left Shows the results of stimulation with SB203580. * Indicates statistical significance at p ⁇ 0.01.), P38 MAP kinase signal inhibition was shown to promote corneal endothelium wound healing.
- FIG. 4 shows that p38 MAP kinase inhibitor instillation promotes cell proliferation of corneal endothelial cells in a rabbit partial corneal endothelial dysfunction model.
- the corneal tissue was immunostained with Ki67, which is a marker for cell proliferation (left photo; the left side in the photograph shows the control, the right side shows the SB203580 (10 mM) eye drop group, the right graph).
- Ki67 positive cell ratios are shown for control (left) and SB203580 instillation (10 mM)).
- Significantly more cells expressed Ki67 by instillation with SB203580 was shown that inhibition of p38 MAP kinase signal promotes cell proliferation of corneal endothelial cells in vivo.
- FIG. 5 shows that p38 MAP kinase signal inhibition suppresses cell density reduction due to cell hypertrophy occurring in the culture environment.
- corneal endothelial cells have a decrease in cell density of about 0.5% per year with aging.
- cell density is reduced by various corneal endothelial diseases.
- Cell culturing also causes cell aging-like reduction, similar to the living body, such as cell enlargement and density reduction as in the living body.
- the effect of p38 MAP kinase signal inhibition on the decrease in corneal endothelial cell density which is a decrease in cell senescence, was examined.
- FIG. 6 shows that p38 MAP kinase signal inhibition maintains pump and barrier functions and inhibits cell density reduction due to culture.
- the cultured human corneal endothelial cells were stimulated at various concentrations using SB203580, a p38 MAP kinase inhibitor, and 20 days later, Na + / K + ⁇ was used as a marker for the pump function and the barrier function that are functions of the corneal endothelial cells.
- ATPase and ZO-1 immunostaining was performed (left: Na + / K + -ATPase, right:.
- FIG. 7 shows the result indicating that p38MAP kinase signal inhibition suppresses cytokines produced by corneal endothelial cells.
- Reference Spot indicates a reference spot.
- GROa, sICAM-1, IL-6, IL-8, IL-23, MCP-1, MIF, and SerpinE1 indicate spots of respective markers.
- FIG. 8 shows that p38MAP kinase signal inhibition suppresses IL-6 produced by corneal endothelial cells. It was shown by PCR method (left) and ELISA (right) that IL-6 production was reduced by adding SB203580 and culturing compared to control.
- the left lane shows control
- the right lane shows SB203580
- the upper row shows IL-6
- the lower row shows GAPDH as a control.
- the graph in the right column shows DMSO as a control from the left
- the right shows SB203580.
- the y-axis shows IL-6 production (pg / mL).
- FIG. 9 shows that p38 MAP kinase signal inhibition suppresses corneal endothelium cell death.
- the upper left is the control upper right shows SB203580
- the lower left shows only UV irradiation
- the lower right shows the result of combining SB203580 with UV irradiation.
- the graph on the left shows the results of UV irradiation and treatment with SB203580, respectively.
- the y-axis indicates the number of cells (% with respect to control). ** indicates statistical significance at p ⁇ 0.05.
- cultured human corneal endothelial cells were stimulated with 100 J / m 2 of ultraviolet light (UV) to induce cell death, and the effect of SB203580 was examined.
- the phase contrast micrograph (left) is 9 hours after UV irradiation.
- On the right is a graph 12 hours after UV irradiation, expressed as a ratio of viable cell count to control.
- FIG. 10 shows that p38 MAP kinase signal inhibition suppresses apoptosis upon UV stimulation of the corneal endothelium. Both left and right are Western blot results. Each lane shows the difference with and without UV irradiation and SB203580, and shows caspase 3, PARP, GAPDH from the upper panel.
- the right panel also shows the difference between UV irradiation and the presence or absence of SB203580, and shows H2AX and GAPDH from the upper panel.
- the left shows that SB203580 suppresses activation by cleavage of caspase 3 and PARP, which are molecules that undergo apoptosis by UV irradiation.
- the right shows that the expression of phosphorylated histone H2AX induced by double-strand breakage of DNA by UV irradiation is suppressed by SB203580.
- FIG. 11 shows that SB203580, a p38 MAPK inhibitor, promotes proliferation of cultured corneal endothelial cells. BrdU incorporation is shown as a percentage of control (y axis).
- the x-axis shows, from the left, the control (without SB203580 added), final concentrations 0.3 ⁇ M, 1 ⁇ M, 3 ⁇ M, 10 ⁇ M, 30 ⁇ M, 100 ⁇ M. * Indicates p ⁇ 0.01.
- FIG. 12 shows that semapimod, a p38 MAPK inhibitor, promotes the growth of cultured corneal endothelial cells. BrdU incorporation is shown as a percentage of control (y axis).
- the x-axis shows, from the left, the control (without Semapomod addition), final concentrations of 0.1 ⁇ M, 0.3 ⁇ M, 1 ⁇ M, 3 ⁇ M, 10 ⁇ M. * Indicates p ⁇ 0.01.
- FIG. 12 shows that semapimod, a p38 MAPK inhibitor, promotes the growth of cultured corneal endothelial cells. BrdU incorporation is shown as a percentage of control (y axis).
- the x-axis shows, from
- FIG. 13 shows that BIRB796, a p38 MAPK inhibitor, promotes proliferation of cultured corneal endothelial cells.
- BrdU incorporation is shown as a percentage of control (y axis).
- the x-axis shows, from the left, the control (without BIRB796 added), final concentrations of 0.1 ⁇ M, 0.3 ⁇ M, 1 ⁇ M, 3 ⁇ M, 10 ⁇ M, 30 ⁇ M, 100 ⁇ M. * Indicates p ⁇ 0.01.
- FIG. 14 shows that PH-79804, a p38 MAPK inhibitor, promotes proliferation of cultured corneal endothelial cells. BrdU incorporation is shown as a percentage of control (y axis).
- the x-axis shows, from the left, the control (without BIRB796 addition), final concentrations of 0.1 ⁇ M, 0.3 ⁇ M, 1 ⁇ M, 3 ⁇ M, 10 ⁇ M, 30 ⁇ M. * Indicates p ⁇ 0.01.
- FIG. 15 shows that VX-702, a p38 MAPK inhibitor, promotes proliferation of cultured corneal endothelial cells. BrdU incorporation is shown as a percentage of control (y axis).
- the x-axis shows, from the left, the control (without BIRB796 added), final concentrations of 0.1 ⁇ M, 0.3 ⁇ M, 1 ⁇ M, 3 ⁇ M, 10 ⁇ M, 30 ⁇ M, 100 ⁇ M.
- FIG. 16 shows that LY2288820, a p38 MAPK inhibitor, promotes proliferation of cultured corneal endothelial cells. BrdU incorporation is shown as a percentage of control (y axis). The x-axis shows, from the left, the control (without BIRB796 addition), final concentrations of 0.1 ⁇ M, 0.3 ⁇ M, 1 ⁇ M, 3 ⁇ M, 10 ⁇ M, 30 ⁇ M. * Indicates p ⁇ 0.01.
- FIG. 17 shows that TAK-715, a p38 MAPK inhibitor, promotes proliferation of cultured corneal endothelial cells. BrdU incorporation is shown as a percentage of control (y axis).
- the x-axis shows, from the left, the control (without BIRB796 added), final concentrations of 0.1 ⁇ M, 0.3 ⁇ M, 1 ⁇ M, 3 ⁇ M, 10 ⁇ M, 30 ⁇ M, 100 ⁇ M. * Indicates p ⁇ 0.01.
- FIG. 18 shows that p38 MAPK inhibitors promote the growth of cultured monkey corneal endothelial cells. BrdU incorporation is shown as a percentage of control (y axis).
- the x-axis shows, from the left, control (DMSO 1/1000, no drug added), SB203580 10 ⁇ M, Semapimod 1 ⁇ M, BIRB796 3 ⁇ M, PH-798041 ⁇ M, VX-702 3 ⁇ M, LY2288820 3 ⁇ M, TAK-715 3 ⁇ M. * Indicates p ⁇ 0.01.
- FIG. 19 shows that p38 MAPK inhibitors promote the growth of cultured human corneal endothelial cells. BrdU incorporation is shown as a percentage of control (y axis).
- the x-axis shows, from the left, control (DMSO 1/1000, no drug added), SB203580 10 ⁇ M, Semapimod 1 ⁇ M, BIRB796 3 ⁇ M, PH-798041 ⁇ M, VX-702 3 ⁇ M, LY2288820 3 ⁇ M, TAK-715 3 ⁇ M. * Indicates p ⁇ 0.01.
- FIG. 20 shows that activation of p38 MAPK induces apoptosis.
- the left panel is a photograph in which cell morphology was observed under a phase contrast microscope (after 9 hours).
- the control anisomycin group, anisomycin and Z-VAD-FMK group are shown from the top.
- FIG. 21 shows that SB203580 eye drops promote proliferation of primate corneal endothelium. Growth promotion was confirmed by immunostaining.
- the upper row shows the control, and the lower row shows SB203580 (3 mM).
- FIG. 22 shows that SB203580 eye drops promote proliferation of primate corneal endothelium.
- the percentage of Ki67 positive cells in the control (left) and SB203580 (right) is shown (y axis).
- Ki67 positive cells were found to be significantly larger in the eyes instilled with SB203580. ** indicates p ⁇ 0.01.
- FIG. 23 shows that p38 MAPK inhibitors suppress cell death of cultured corneal endothelial cells.
- Upper row shows staining with control (DMSO only added), UV (100 J / m 2 ), Z-VAD, and middle row shows SB203580, BIRB796, PH-79804 from the left.
- the lower row shows VX-702, LY2288820, and TAK-715 from the left.
- the concentrations used were 10 ⁇ M for SB203580, 1 ⁇ M for Semapimod, 3 ⁇ M for BIRB796, 1 ⁇ M for PH-79804, 3 ⁇ M for VX-702, 3 ⁇ M for LY2288820, and 3 ⁇ M for TAK-715, all using cell damage caused by UV Of p38 MAPK inhibitors.
- the scale bar indicates 100 ⁇ m.
- FIG. 24 shows that p38 MAPK inhibitors suppress apoptosis of cultured corneal endothelial cells.
- Upper row shows staining with control (DMSO only added), UV (100 J / m 2 ), Z-VAD, and middle row shows SB203580, BIRB796, PH-79804 from the left.
- the lower row shows VX-702, LY2288820, and TAK-715 from the left.
- Green staining indicates annexin V and blue staining indicates DAPI staining.
- UV-induced apoptosis was suppressed by all p38 MAPK inhibitors used.
- the scale bar indicates 100 ⁇ m.
- FIG. 25 shows that p38 MAPK inhibitors suppress corneal endothelium apoptosis.
- the concentrations used were 10 ⁇ M for SB203580, 1 ⁇ M for Semapimod, 3 ⁇ M for BIRB796, 1 ⁇ M for PH-799804, 3 ⁇ M for VX-702, 3 ⁇ M for LY2288820, and 3 ⁇ M for TAK-715, respectively.
- UV-induced apoptosis was suppressed by all p38 MAPK inhibitors used.
- the scale bar indicates 100 ⁇ m.
- FIG. 26 shows that p38 MAPK inhibitors suppress corneal endothelium apoptosis. The percentage of annexin V positive cells is shown.
- UV irradiation SB203580, BIRB796, PH-707804, VX-702, LY2288820, and TAK715 are shown.
- the test is a Dunnett test, and * indicates p ⁇ 0.05.
- MAP kinase is an enzyme that phosphorylates mitogen-activating protein (MAP) and is a family of serine / threonine kinases.
- MAP kinases are a group of protein serine / threonine kinases that are activated in response to various extracellular stimuli and mediate signal transduction from the cell surface to the nucleus.
- MAP kinase also called extracellular signal-regulated protein kinases or ERK, is a terminal enzyme of the 3-kinase cascade.
- the standard MAP kinase module consists of three protein kinases. That is, a MAP kinase kinase (or MEKK) activates a MAP kinase kinase (or MEK), which in turn activates a MAPK / ERK enzyme.
- the MAPK / ERK, JNK (c-jun amino terminal protein kinase (or SAPK)), and p38 cascade are composed of three enzyme modules, including MEKK, MEK and ERK, or MAP kinase superfamily members, respectively.
- Various extracellular signals when associated with their respective cell surface receptors, trigger an early event that is then transmitted inside the cell where it activates the appropriate cascade.
- MAP kinase is a mitogen-activated protein kinase (or ERK) superfamily and has a TXY consensus sequence in the catalytic core.
- ERK1 / 2, p38HOG, and JNK / SAPK are related but distinct terminal enzymes in the parallel pathway.
- Sebolt-Leopold et al. Nat. Med. , 5 (7): 810-6 (Jul, 1999) describes an in vitro cascade assay system for identifying small molecule inhibitors of the MAP kinase (MAPK) pathway.
- Glutathione-S-transferase (GST) -MEK1 and GST-MAPK fusion proteins were prepared from bacterial cells and sequentially in this assay system to MEK1 MAPK and MBP (myelin basic protein). Used for phosphorylation.
- PD184352 [2- (2-Chloro-4-iodo-phenylamino) -N-cyclopropylmethoxy-3,4-difluoro-benzamide], which directly inhibits MEK1, has also been found.
- p38 MAP kinase inhibitor refers to any drug that inhibits MAP kinase signaling related to p38.
- p38 MAP kinase inhibitors relate to compounds that target, decrease or inhibit p38-MAP kinase, a MAP kinase family member.
- the p38 MAP kinase inhibitor is preferably water-soluble. This is because if it is not water-soluble, it may be necessary to use a solvent that is not compatible with the body. Whether it is water-soluble or not can be classified based on the pharmacopoeia solubility definition.
- water-soluble means that any water-soluble one can be used as long as it dissolves an effective amount when water is used as a solvent.
- 4- (4-fluorophenyl) -2- (4-methylsulfinylphenyl) -5- (4-pyridyl) -1H-imidazole (SB-203580) is soluble in methanol but in water. Is difficult to dissolve, and the hydrochloride of 4- (4-fluorophenyl) -2- (4-methylsulfinylphenyl) -5- (4-pyridyl) -1H-imidazole (SB-203580) It is considered soluble and classified as water soluble.
- P38 is a mammalian MAP kinase superfamily member and is activated by stress, ultraviolet light, and inflammatory cytokines.
- the catalyst core has a TGY consensus sequence.
- dysregulated kinases are a major etiology in many diseases, particularly proliferative and inflammatory disorders.
- One of the oncogenes first identified in the oncology area was for epidermal growth factor receptor kinase (EGFR), but its overexpression is associated with lung, breast, brain, prostate, GI and ovarian cancer.
- EGFR epidermal growth factor receptor kinase
- constitutive activation of MAP kinase is associated with primary tumors from many cancer cell lines (pancreas, colon, lung, ovary, and kidney) and various human organs (kidney, colon, and lung) ( Hoshino et al., Oncogene, 18 (3): 813-22 (Jan. 1999)).
- p38 MAP kinase regulates the production of two cytokines, TNF ⁇ and IL-1, associated with the onset and progression of inflammation.
- the p38 MAP kinase inhibitor that can be used in the present invention is not particularly limited as long as it is a compound having p38 MAP kinase inhibitory activity in addition to VX-745 (Vertex Pharmaceuticals Inc.), for example, JP-A-2002-97189, JP 2000-503304, JP 2001-522357, JP 2003-535023, JP 2001-506266, JP 9-508123, WO 01/56553, International Publication No. 93/14081, International Publication No. 01/35959, International Publication No. 03/68229, International Publication No. 03/85859, Special Publication 2002-534468, Special Publication 2001-526222 , Special Table 2001-52622 No. 6, U.S. Pat. No.
- SB202190 [4- (4-fluorophenyl) -5- (4-pyridinyl) -lH-imidazol-2-yl] phenol
- SB202190 is a highly selective, potent and cell-permeable p38 MAP. It is a kinase inhibitor (SmithKline Beecham, plc) (Jiangget al., J. Biol. Chem, 271: 17920 (1996); Frantzet al., Biochemistry, 37: 138-46 (1998); Nemoto et al.
- Anisomycin ((2R, 3S, 4S) -2-[(4-methoxyphenyl) methyl] -3,4-pyrrolidinediol-3-acetate) is a protein synthesis inhibitor (blocks translation). It is a potent activator of stress activated protein kinases (JNK / SAPK) and p38 MAP kinase, homologous desensitization induced by the immediate early genes (c-fos, fosB, c-jun, junB, and junD) Acts as a powerful signaling agonist that selectively induces the product.
- JNK / SAPK stress activated protein kinases
- p38 MAP kinase homologous desensitization induced by the immediate early genes (c-fos, fosB, c-jun, junB, and junD) Acts as a powerful signaling agonist that selectively induces the product.
- SB203580 (4- [5- (4-fluorophenyl) -2- [4- (methylsulfonyl) phenyl] -lH-imidazol-4-yl] pyridine) is a highly selective of p38 mitogen-activated protein kinase. Inhibitor (SmithKline Beecham, plc).
- SB203580 hydrochloride (4- [5- (4-fluorophenyl) -2- [4- (methylsulfonyl) phenyl] -lH-imidazol-4-yl] pyridine) compound is a highly selective p38 mitogen activated It is a water-soluble salt of a protein kinase inhibitor. It has been shown to inhibit interleukin-2-induced T cell proliferation, cyclooxygenase-1 and -2, and thromboxane synthase.
- U0126 (1,4-diamino-2,3-dicyano-1,4-bis [2-aminophenylthio] butadiene) is a potent and selective non-competitive inhibitor of MAP kinase kinase.
- Preferred p38 MAP kinase inhibitors include, but are not limited to, SB203580 (4- [4- (4-fluorophenyl) -2- (4-methylsulfinylphenyl) -1H-imidazol-5-yl] pyridine). .
- p38 MAP kinase inhibitors that can be used in the present invention include, for example, neutralizing antibodies to p38 MAP kinase, compounds that inhibit the activity of p38 MAP kinase, and transcription of genes encoding p38 MAP kinase.
- Compounds eg, antisense nucleic acids, RNAi, ribozymes), peptides, and plant components (eg, polyphenols, flavonoids, glycosides).
- concentration used examples include about 50 nmol / l to 100 ⁇ mol / l, and usually about 0.001 to 100 ⁇ mol / l, preferably about 0.01 to 75 ⁇ mol / l, about 0.05 to 50 ⁇ mol / l, About 1 to 10 ⁇ mol / l, about 0.01 to 10 ⁇ mol / l, about 0.05 to 10 ⁇ mol / l, about 0.075 to 10 ⁇ mol / l, about 0.1 to 10 ⁇ mol / l, about 0.5 to 10 ⁇ mol / l 1, about 0.75 to 10 ⁇ mol / l, about 1.0 to 10 ⁇ mol / l, about 1.25 to 10 ⁇ mol / l, about 1.5 to 10 ⁇ mol / l, about 1.75 to 10 ⁇ mol / l, about 2.
- ⁇ mol / l about 4.0 to 5.0 ⁇ mol / l, about 0.01 to 3.0 ⁇ mol / l, about 0.05 to 3.0 ⁇ mol / l, about 0.075 to 3.0 ⁇ mol / l, about 0 1 to 3.0 ⁇ mol / l, about 0.5 to 3.0 ⁇ mol / l, about 0.75 to 3.0 ⁇ mol / l, about 1.0 to 3.0 ⁇ mol / l, about 1.25 to 3.0 mol / l, about 1.5 to 3.0 ⁇ mol / l, about 1.75 to 3.0 ⁇ mol / l, about 2.0 to 3.0 ⁇ mol / l, about 0.01 to 1.0 ⁇ mol / l, about 0 .05-1.0 ⁇ mol / l, about 0.075-1.0 ⁇ mol / l, about 0.1-1.0 ⁇ mol / l, about 0.5-1.0 ⁇ mol / l, about 0.75-1.0 ⁇ mol /
- the antisense nucleic acid used in the present invention may inhibit the expression and / or function of a gene (nucleic acid) encoding the above-mentioned P38 MAP kinase signal transduction pathway member or the like by any of the above-described actions.
- a gene nucleic acid
- an antisense sequence complementary to the untranslated region near the 5 ′ end of the mRNA of the gene encoding the above-mentioned P38 MAP kinase or the like is designed, it is considered effective for inhibiting the translation of the gene.
- a sequence complementary to the coding region or the 3 'untranslated region can also be used.
- the nucleic acid containing the antisense sequence of the sequence of the untranslated region is included in the antisense nucleic acid used in the present invention.
- the antisense nucleic acid used is linked downstream of a suitable promoter, and preferably a sequence containing a transcription termination signal is linked on the 3 'side.
- the nucleic acid thus prepared can be transformed into a desired animal (cell) using a known method.
- the sequence of the antisense nucleic acid is preferably a sequence complementary to a gene encoding P38 MAP kinase or the like possessed by the animal (cell) to be transformed, or a part thereof, as long as the gene expression can be effectively suppressed. In, it does not have to be completely complementary.
- the transcribed RNA preferably has a complementarity of 90% or more, most preferably 95% or more, to the transcript of the target gene.
- the length of the antisense nucleic acid is preferably at least 12 bases and less than 25 bases, but the antisense nucleic acid of the present invention is not necessarily of this length.
- the antisense nucleic acid may be composed only of DNA, but may contain nucleic acid other than DNA, for example, locked nucleic acid (LNA).
- the antisense nucleic acid used in the present invention may be an LNA-containing antisense nucleic acid containing LNA at the 5 'end and LNA at the 3' end.
- an antisense nucleic acid for example, Hirashima and Inoue, Shinsei Kagaku Kogaku Kenkyu 2 (Replication and Expression of Nucleic Acid IV Gene, edited by the Japanese Biochemical Society, Tokyo Chemical Dojin, 1993, 319-347.
- An antisense sequence can be designed based on a nucleic acid sequence such as P38 MAP kinase.
- ribozymes refers to an RNA molecule having catalytic activity. Although ribozymes have various activities, research focusing on ribozymes as enzymes that cleave RNA has made it possible to design ribozymes that cleave RNA in a site-specific manner. Some ribozymes have a size of 400 nucleotides or more, such as group I intron type or M1 RNA contained in RNase P, but some have an active domain of about 40 nucleotides called hammerhead type or hairpin type. (Makoto Koizumi and Eiko Otsuka, protein nucleic acid enzyme, 1990, 35, 2191.).
- the self-cleaving domain of hammerhead ribozyme cleaves 3 ′ of C15 in the sequence G13U14C15, but base pairing between U14 and A9 is important for its activity, and instead of C15, A15 or U15 However, it has been shown that it can be cleaved (Koizumi, M. et al., FEBS Lett, 1988, 228, 228.).
- a restriction enzyme-like RNA-cleaving ribozyme that recognizes the sequence UC, UU or UA in the target RNA can be created (Koizumi, M.
- Hairpin ribozymes are also useful for the purposes of the present invention.
- This ribozyme is found, for example, in the minus strand of tobacco ring spot virus satellite RNA (Buzayan, JM., Nature, 1986, 323, 349.). It has been shown that target-specific RNA-cleaving ribozymes can also be produced from hairpin ribozymes (Kikuchi, Y. & Sasaki, N., Nucl. Acids Res, 1991, 19, 6751., Hiroshi Kikuchi, Chemistry and Biology) , 1992, 30, 112.).
- the expression of the gene can be inhibited by specifically cleaving the transcription product of the gene encoding P38 MAP kinase or the like using a ribozyme.
- RNA interference RNA interference
- RNAi RNA interference
- siRNA short-chain dsRNA
- siRNA is an RNA molecule having a double-stranded RNA portion consisting of 15 to 40 bases, cleaving the mRNA of a target gene having a sequence complementary to the antisense strand of the siRNA, It has a function of suppressing the expression of the target gene.
- the siRNA in the present invention comprises a sense RNA strand comprising a sequence homologous to a continuous RNA sequence in mRNA such as P38 MAP kinase, and an antisense RNA strand comprising a sequence complementary to the sense RNA sequence. It is RNA containing the double stranded RNA part which becomes.
- siRNAs and mutant siRNAs described below are within the skill of the artisan. It is within the scope of ordinary trials for those skilled in the art to select any continuous RNA region of mRNA that is a transcription product of a sequence such as P38 MAP kinase and to produce a double-stranded RNA corresponding to this region. It can be done as appropriate. In addition, selection of siRNA sequences having a stronger RNAi effect from mRNA sequences that are transcripts of the sequences can also be appropriately performed by those skilled in the art by known methods. If one strand is known, those skilled in the art can easily know the base sequence of the other strand (complementary strand). siRNA can be appropriately prepared by those skilled in the art using a commercially available nucleic acid synthesizer. In addition, for synthesis of a desired RNA, a general synthesis contract service can be used.
- the length of the double-stranded RNA portion is 15 to 40 bases, preferably 15 to 30 bases, more preferably 15 to 25 bases, still more preferably 18 to 23 bases, and most preferably 19 to 21 bases as a base. . It is understood that these upper and lower limits are not limited to these specific ones and may be any combination of those listed.
- the terminal structure of the sense strand or antisense strand of siRNA is not particularly limited and may be appropriately selected depending on the intended purpose. For example, it may have a blunt end or a protruding end (overhang) It is preferable that the 3 ′ end protrudes.
- siRNA having an overhang consisting of several bases, preferably 1 to 3 bases, more preferably 2 bases, at the 3 ′ end of the sense RNA strand and the antisense RNA strand suppresses the expression of the target gene. In many cases, the effect is large, which is preferable.
- the type of the overhanging base is not particularly limited, and may be either a base constituting RNA or a base constituting DNA.
- Preferred overhang sequences include dTdT (deoxy T 2 bp) at the 3 'end.
- preferred siRNAs include, but are not limited to, those in which dTdT (deoxy T is 2 bp) is attached to the 3 'end of the sense / antisense strands of all siRNAs.
- siRNA in which 1 to several nucleotides are deleted, substituted, inserted and / or added in one or both of the sense strand or antisense strand of the siRNA can also be used.
- the 1 to several bases are not particularly limited, but preferably 1 to 4 bases, more preferably 1 to 3 bases, and most preferably 1 to 2 bases.
- Such mutations include those in which the number of bases in the 3 ′ overhang portion is 0 to 3, or the base sequence in the 3 ′ overhang portion is changed to another base sequence, or base insertion or addition Or, there may be mentioned those in which the length of the sense RNA strand differs from that of the antisense RNA strand by 1 to 3 bases due to deletion, or in which the base is substituted with another base in the sense strand and / or antisense strand. However, it is not limited to these. However, it is necessary that the sense strand and the antisense strand can hybridize in these mutant siRNAs, and that these mutant siRNAs have the ability to suppress gene expression equivalent to siRNA having no mutation.
- the siRNA may be a molecule having a structure in which one end is closed, for example, a siRNA having a hairpin structure (Short Hairpin RNA; shRNA).
- shRNA is a RNA comprising a sense strand RNA of a specific sequence of a target gene, an antisense strand RNA consisting of a sequence complementary to the sense strand sequence, and a linker sequence connecting both strands, and a sense strand portion and an antisense strand The portions hybridize to form a double stranded RNA portion.
- siRNA does not show a so-called off-target effect in clinical use.
- the off-target effect refers to the action of suppressing the expression of another gene that is partially homologous to the siRNA used in addition to the target gene.
- NCBI National Center for Biotechnology Information
- RNA of the present invention In order to produce the siRNA of the present invention, a known method such as a method using chemical synthesis or a method using a gene recombination technique can be appropriately used.
- double-stranded RNA can be synthesized by a conventional method based on sequence information.
- an expression vector encoding a sense strand sequence or an antisense strand sequence is constructed, and the sense strand RNA or antisense strand RNA generated by transcription after introducing the vector into a host cell. It can also be produced by acquiring each of the above.
- a desired strand can be expressed by expressing a shRNA that forms a hairpin structure, including a sense strand of a specific sequence of a target gene, an antisense strand consisting of a sequence complementary to the sense strand sequence, and a linker sequence that connects both strands.
- the double-stranded RNA can also be prepared.
- all or part of the nucleic acid constituting the siRNA may be a natural nucleic acid or a modified nucleic acid.
- the siRNA in the present invention does not necessarily need to be a set of double-stranded RNAs for the target sequence, and a plurality of sets for the region containing the target sequence (this “plurality” is not particularly limited, but preferably 2 to 5) It may be a mixture of double-stranded RNA.
- siRNA as a nucleic acid mixture corresponding to the target sequence can be appropriately prepared by a person skilled in the art using a commercially available nucleic acid synthesizer and a DICER enzyme. Synthetic contract service can be used.
- the siRNA of the present invention includes so-called “cocktail siRNA”. In the siRNA of the present invention, not all nucleotides are necessarily ribonucleotides (RNA).
- the one or more ribonucleotides constituting the siRNA may be corresponding deoxyribonucleotides.
- This “corresponding” refers to the same base species (adenine, guanine, cytosine, thymine (uracil)) although the structures of the sugar moieties are different.
- deoxyribonucleotide corresponding to ribonucleotide having adenine refers to deoxyribonucleotide having adenine.
- a DNA (vector) capable of expressing the RNA of the present invention is also included in a preferred embodiment of a nucleic acid capable of suppressing the expression of P38 MAP kinase and the like.
- the DNA (vector) capable of expressing the double-stranded RNA of the present invention is a DNA encoding one strand of the double-stranded RNA and a DNA encoding the other strand of the double-stranded RNA, Each DNA has a structure linked to a promoter so that it can be expressed.
- the expression vector of the present invention can be prepared by appropriately inserting DNA encoding the target RNA into various known expression vectors.
- a modified nucleic acid may be used as the nucleic acid that suppresses the expression of the target gene.
- the modified nucleic acid means one having a structure different from that of a natural nucleic acid, in which a nucleoside (base site, sugar site) and / or internucleoside binding site is modified.
- Examples of the “modified nucleoside” constituting the modified nucleic acid include an abasic nucleoside; an arabino nucleoside, 2′-deoxyuridine, ⁇ -deoxyribonucleoside, ⁇ -L-deoxyribonucleoside, and other sugars.
- nucleosides having modifications include peptide nucleic acids (PNA), peptide nucleic acids to which phosphate groups are bound (PHONA), locked nucleic acids (LNA), morpholino nucleic acids and the like.
- PNA peptide nucleic acids
- PONA peptide nucleic acids to which phosphate groups are bound
- LNA locked nucleic acids
- nucleoside having a sugar modification include substituted pentose monosaccharides such as 2′-O-methylribose, 2′-deoxy-2′-fluororibose, and 3′-O-methylribose; 1 ′, 2′-deoxyribose Arabinose; substituted arabinose sugars; nucleosides with hexose and alpha-anomeric sugar modifications are included.
- These nucleosides may be modified bases with modified base sites.
- modified bases include, for example, pyrimidines such as 5-hydroxycytosine, 5-flu
- modified internucleoside bond constituting the modified nucleic acid
- examples of the “modified internucleoside bond” constituting the modified nucleic acid include, for example, alkyl linker, glyceryl linker, amino linker, poly (ethylene glycol) bond, methylphosphonate internucleoside bond; methylphosphonothioate, phosphotriester , Phosphothiotriester, phosphorothioate, phosphorodithioate, triester prodrug, sulfone, sulfonamide, sulfamate, formacetal, N-methylhydroxylamine, carbonate, carbamate, morpholino, boranophosphonate, phosphoramidate, etc.
- Non-natural internucleoside linkages include, for example, alkyl linker, glyceryl linker, amino linker, poly (ethylene glycol) bond, methylphosphonate internucleoside bond; methylphosphonothioate, phosphotriester
- Examples of the nucleic acid sequence contained in the double-stranded siRNA of the present invention include siRNA for P38 MAP kinase or other P38 MAP kinase signal members.
- siRNA shows very excellent specific post-transcriptional repression effect in vitro, but in vivo it is rapidly degraded by the nuclease activity in serum, so its duration is limited and more optimal and effective delivery. System development has been demanded.
- One example is Ochiya, T et al. , Nature Med.
- telocollagen which is a biocompatible material
- nucleic acid When atelocollagen, which is a biocompatible material, is mixed with nucleic acid to form a complex, it has the effect of protecting the nucleic acid from degrading enzymes in the living body and is very suitable as a carrier of siRNA.
- the method of introducing the nucleic acid, therapeutic or prophylactic agent of the present invention is not limited thereto. In this way, in the living body, it is rapidly degraded by the action of the nucleolytic enzyme in the serum, so that a long-term effect can be achieved. For example, Takeshita F.I. PNAS.
- bovine skin-derived atelocollagen forms a complex with nucleic acid and protects the nucleic acid from in vivo degrading enzymes
- siRNA siRNA
- a corneal endothelial disease, disorder or condition requiring cell proliferation, inhibition of cell damage or inhibition of cell aging refers to a disease, disorder or condition of the corneal endothelium, which requires cell proliferation. Any disease, disorder or condition associated with at least one of cell disorder, cell disorder or cell aging, wherein improvement or cure can be achieved by performing cell proliferation, cell disorder inhibition or cell aging inhibition refers to a failure or condition.
- Corneal endothelial diseases, disorders or conditions that require cell proliferation, cytopathic inhibition or cellular aging inhibition include, for example, Fuchs corneal endothelial dystrophy, sustained decrease in corneal endothelial density after corneal transplantation, trauma, ophthalmic surgery, aging, Although the disorder
- a corneal endothelium disorder requiring cell proliferation refers to a state in which the corneal endothelium is deficient due to trauma, surgery, etc.
- a cellular disorder refers to Fuchs corneal endothelial dystrophy, intracorneal Apoptosis or cell death occurs due to dermatitis, etc.
- Cell aging means cytoplasm enlargement, cell density reduction, cell size increase, hexagonal cell rate decrease, cell proliferation ability decrease This refers to the state in which this occurs.
- the present invention provides a therapeutic or prophylactic agent for corneal endothelial injury requiring cell proliferation, including a p38 MAP kinase inhibitor.
- a p38 MAP kinase inhibitor is believed to be involved in various signal transductions and is also thought to be involved in inflammation, the mechanism of corneal endothelium has not been clarified, and corneal endothelium, which particularly requires cell proliferation, has not been clarified. It could not be expected to be effective in healing or preventing wounds due to disorders, for example inhibition thereof. Therefore, it can be said that the present inventors have unexpectedly discovered that a p38 MAP kinase inhibitor is applied to the treatment or prevention of a corneal endothelial disorder requiring cell proliferation. In particular, an embodiment that can be used as an eye drop has not been found in the past, and it should be said that such a form is highly evaluated in an actual bed leaving place.
- the p38 MAP kinase inhibitor is water soluble. This is because if it is water-soluble, water that is not a problem for biocompatibility can be used as a solvent. Even if it is not water-soluble, it can be used as long as it is soluble in a pharmaceutically acceptable solvent (for example, ethanol). Solubility can be classified based on the pharmacopoeia definition of solubility.
- water-soluble means that any water-soluble one can be used as long as it dissolves an effective amount when water is used as a solvent.
- the target solubility in the case of water, water-soluble
- the target solubility is in the category of “easily soluble”, but in some cases it is “slightly soluble”.
- those that are classified as “slightly insoluble” or “not easily soluble” can be used.
- 4- (4-fluorophenyl) -2- (4-methylsulfinylphenyl) -5- (4-pyridyl) -1H-imidazole SB-203580
- SB-203580 4- (4-fluorophenyl) -2- (4-methylsulfinylphenyl) -5- (4-pyridyl) -1H-imidazole
- the method of use of the present invention includes administration methods such as injection into the anterior chamber, impregnation into sustained-release agent, subconjunctival injection, systemic administration (internal use, intravenous injection) in addition to eye drops. be able to.
- the p38 MAP kinase inhibitor used in the present invention is 4- (4-fluorophenyl) -2- (4-hydroxyphenyl) -5- (4-pyridyl) -1H-imidazole (SB-202190).
- the p38 MAP kinase inhibitor is 4- [4- (4-fluorophenyl) -2- (4-methylsulfinylphenyl) -1H-imidazol-5-yl] pyridine) (SB203580), N- [ 3-tert-Butyl-1- (4-methylphenyl) pyrazol-5-yl) -N ′-[4- (2-morpholinoethoxy) -1-naphthyl] urea (Doramapimod; BIRB796), 2- Benzamido-4- [2-ethyl-4- (3-methylphenyl) thiazol-5-yl] pyridine (TAK-715), 1- (carbamoyl-6- (2,4-difluorophenyl) pyridin-2-yl ) -1- (2,6-difluorophenyl) urea (VX-702; 2- (2,4-difluoropheny
- the p38 MAP kinase inhibitor comprises 4- [4- (4-fluorophenyl) -2- (4-methylsulfinylphenyl) -1H-imidazol-5-yl] pyridine) (SB203580) or a salt thereof.
- the salt is a pharmaceutically acceptable salt.
- the p38 MAP kinase inhibitor comprises 4- [4- (4-fluorophenyl) -2- (4-methylsulfinylphenyl) -1H-imidazol-5-yl] pyridine) (SB203580) hydrochloride.
- 4- [4- (4-Fluorophenyl) -2- (4-methylsulfinylphenyl) -1H-imidazol-5-yl] pyridine) (SB203580) hydrochloride is water soluble and can be used directly as eye drops. This is because there is little risk of side effects and it is preferable for wound healing.
- the concentration of the p38 MAP kinase agent used in the present invention is usually about 0.1 to 100 ⁇ mol / l, preferably about 0.1 to 30 ⁇ mol / l, more preferably about 1 ⁇ mol / l.
- Other concentration ranges can be appropriately changed, for example, usually about 0.001 to 100 ⁇ mol / l, preferably about 0.01 to 75 ⁇ mol / l, about 0.05 to 50 ⁇ mol / l, about 1 ⁇ 10 ⁇ mol / l, about 0.01-10 ⁇ mol / l, about 0.05-10 ⁇ mol / l, about 0.075-10 ⁇ mol / l, about 0.1-10 ⁇ mol / l, about 0.5-10 ⁇ mol / l, About 0.75 to 10 ⁇ mol / l, about 1.0 to 10 ⁇ mol / l, about 1.25 to 10 ⁇ mol / l, about 1.5 to 10 ⁇ mol / l, about 1.75 to 10 ⁇ mol
- the therapeutic or prophylactic agent of the present invention can be directed to any animal having a corneal endothelium, such as a mammal, and is preferably intended for the treatment or prevention of primate corneal endothelium.
- the subject of treatment or prevention is human corneal endothelium.
- the corneal endothelial disease, disorder or condition targeted by the therapeutic and prophylactic agents of the present invention is a corneal endothelial disease, disorder or condition that requires cell proliferation, cell disorder inhibition or cell aging inhibition, Examples include, but are not limited to, Fuchs corneal endothelial dystrophy, sustained decrease in corneal endothelial density after corneal transplantation, trauma, ophthalmic surgery, aging, corneal endotheliitis, and the like.
- the present invention provides a method for the treatment or prevention of corneal endothelial disorders that require cell proliferation, comprising administering an effective amount of a p38 MAP kinase inhibitor to a subject in need thereof.
- Examples of administration (transplantation) subjects of the therapeutic and prophylactic agents or methods of the present invention include mammals (eg, humans, mice, rats, hamsters, rabbits, cats, dogs, cows, horses, sheep, monkeys, etc.) Primates are preferred, especially humans.
- mammals eg, humans, mice, rats, hamsters, rabbits, cats, dogs, cows, horses, sheep, monkeys, etc.
- Primates are preferred, especially humans.
- the corneal endothelium treatment in primates has not achieved satisfactory results so far, and in this sense, the present invention provides an innovative treatment method and medicine.
- the present invention is the first to achieve good therapeutic results using a p38 MAP kinase inhibitor in a case using a wound model of corneal endothelium.
- the dose and frequency of administration vary depending on the symptoms, age, body weight, and administration form.
- the active ingredient when used as an eye drop for normal adults, is preferably about 0.0001 to 0.5 w / v%, preferably Is a preparation containing about 0.003 to 0.03 w / v%, 1 to 10 times per day, preferably 1 to 6 times, more preferably 1 to 3 times per day, about 0.01 to 0. 1 mL can be administered.
- a concentration of 1/10 to 1000 times the above concentration can be used.
- a person skilled in the art can appropriately select the type and concentration of the p38 MAP kinase inhibitor depending on the disease state.
- HCEC Human corneal endothelial cells
- source and culture method Human corneal endothelial cells
- HCEC were cultured as follows. Briefly, from the research cornea purchased from Seattle Eye Bank, the Descemet's membrane containing corneal endothelial cells is exfoliated, and the corneal endothelial cells are mechanically exfoliated together with the basement membrane, and collagenase (ROCHE catalog number: 10 103 586). 001) (typically treated with 1 mg / mL collagenase A (Roche Applied Science) at 37 ° C. for 2 hours), and then primary culture was performed.
- the medium is Opti-MEM I Reduced-Serum Medium, Liquid (INVITROGEN catalog number: 31985-070), 8% fetal bovine serum (FBS) (BIOWEST, catalog number: S1820-500), 200 mg / ml CaCl 2.
- the culture medium was prepared according to published protocols with some modifications. Briefly, OptiMEM-I (Life Technologies), 8% FBS, 5 ng / mL epidermal growth factor (EGF) (Sigma-Aldrich Co., St. Louis, MO), 20 ⁇ g / mL ascorbic acid (Sigma-Aldrich) A basic culture medium containing 200 mg / L calcium chloride (Sigma-Aldrich), 0.08% chondroitin sulfate (Wako Pure Chemical Industries, Ltd., Osaka City) and 50 ⁇ g / mL gentamicin and then inactivated Conditioned media was collected after culturing 3T3 fibroblasts.
- 3T3 fibroblasts were incubated with 4 ⁇ g / mL mitomycin C (MMC) (Kyowa Hakko Kirin Co., Tokyo) for 2 hours at 37 ° C. under 5% CO 2 and then trypsinized. And plated on plastic dishes at a density of 2 ⁇ 10 4 cells / cm 2 .
- MMC mitomycin C
- HCEC was cultured in a humidified atmosphere at 37 ° C. in 5% CO 2 and the culture medium was changed every two days.
- HCECs When HCECs reached confluence in 14-28 days, they were rinsed in Ca 2+ and Mg 2+ free PBS, trypsinized with 0.05% trypsin-EDTA for 5 minutes at 37 ° C., and 1: Passage at a ratio of 2.
- -Cell observation method such as staining (histological examination): Cell observation was performed with a phase contrast microscope. In addition, after cells were fixed, immunostaining was performed using ZO-1, Na + / K + -ATPase as a function-related marker, and observation was performed with a fluorescence microscope.
- cultured HCEC were placed in Lab-Tek TM Chamber Slides TM (NUNC A / S, Roskilde, Denmark) and fixed with 4% formaldehyde for 10 minutes at room temperature (RT), 1% bovine serum albumin Incubated with (BSA) for 30 minutes.
- RT room temperature
- BSA bovine serum albumin
- cultured HCEC on Lab-Tek TM Chamber Slides TM was fixed in 4% formaldehyde for 10 minutes at room temperature and 30 minutes with 1% bovine serum albumin (BSA). Incubated.
- ZO-1 Zymed Laboratories, Inc., South San Francisco, Calif.
- a tight junction-related protein Na + / K + -ATPase (Upstate Biotec), a protein related to pump function. , Inc., Lake Placid, NY)
- immunohistochemical analysis of fibronectin BD, Franklin Lakes, NJ
- fibronectin and type 1 collagen was used to do this.
- Staining of ZO-1, Na + / K + -ATPase, type 1 collagen and fibronectin uses a 1: 200 dilution of ZO-1 polyclonal antibody, Na + / K + -ATPase monoclonal antibody, and fibronectin monoclonal antibody, respectively. Carried out. Secondary antibodies used were Alexa Fluor® 488 labeled or 1: 2000 dilution of Alexa Fluor® 594 labeled goat anti-mouse IgG (Life Technologies). Actin staining was performed using a 1: 400 dilution of Alexa Fluor® 488-labeled phalloidin (Life Technologies).
- the cell nuclei were then stained with DAPI (Vector Laboratories, Inc., Burlingame, CA) or PI (Sigma-Aldrich). The slides were then observed with a fluorescence microscope (TCS SP2 AOBS; Leica Microsystems, Welzlar, Germany). Western blotting: Proteins extracted with RIPA buffer were electrophoresed with 7.5% polyacrylamide. The separated protein was transferred to a PVDF membrane (manufactured by PALL LIFE SCIENCE, catalog number: EH-2222).
- mouse-IgG antibody HRP complex (CELL SIGNALING, catalog number: 7074P2) and rabbit-IgG antibody HRP complex (GE Healthcare, catalog number: NA934) were incubated, washed, and then ECL. -A band emitted by ADVAVCE (GE Healthcare Japan, catalog number: RPN2135V) was detected.
- Immunostaining Confluent cells were washed with PBS (Nissui, catalog number: 5913) and then ice-cooled ethanol (Nacalai Tesque, catalog number: 14713-95) and acetic acid (WAKO catalog number: 017-00256) (95 : 5) for 10 minutes.
- Tris-buffered saline (10 mM Tris-HCl, pH 7 supplemented with 0.1% (vol / vol) polyethylene sorbitan monolaurate (Nacalai Tesque, catalog number: 28353-85) (TBS-T) and 10% fetal calf serum .4; 100 mM NaCl) for 1 hour to perform a blocking operation.
- Rabbit anti-human ZO-1 antibody (1: 200) and mouse anti-human Na + / K + -ATPase antibody (1: 200) were used as primary antibodies and reacted at room temperature for 1 hour. A dilution ratio of 1: 200 or 1: 1000 was appropriately used.
- Antibody against ZO-1 Mouse INVITROGEN (INVITROGEN catalog number: 339100), rabbit ZYMED LABORATORIES (ZYMED LABORATORIES catalog number: 61-7300) were used.
- -Antibodies to GAPDH those manufactured by ABCAM (catalog number: ab36840) were used.
- Secondary antibody HPR-conjugated anti-rabbit IgG secondary antibody manufactured by Cell Signaling Technology (catalog number: 7074)
- Secondary antibody anti-rabbit IgG secondary antibody manufactured by Cell Signaling Technology (catalog number: 7076) Cytokine antibody corneal endothelial cells were cultured in the presence of 10 ⁇ M SB203580, and the culture supernatant was collected and used as a sample solution.
- the proteome profiler (# ARY005, R & D) comprehensively quantified cytokines in the culture supernatant.
- the membrane on which the cytokine antibody was blotted was placed on a tray, 2 ml of blocking solution was added, and incubated at room temperature for 1 hour. Biotin antibody was added to the sample solution and incubated at room temperature for 1 hour. The blocking solution was discarded and the antibody solution was immersed in a membrane and incubated overnight at 4 ° C. After washing the membrane, 2 ml of HRP-labeled streptavidin solution diluted with blocking solution was added and incubated at room temperature for 30 minutes. After washing the membrane, a substrate solution was added and detected with LAS400 (Fuji Film).
- PCR method PCR was performed on each laminin chain and integrin chain by RT-PCR (semi-quantitative reverse transcriptase polymerase chain reaction).
- the primer used was purchased from INVITROGEN, an oligonucleotide synthesis company, and desalted.
- RNEasy Mini Kit QIAGEN, catalog number: 74106 was used. From the research cornea purchased from Seattle Eye Bank, the Descemet's membrane containing corneal endothelial cells was peeled off, and the corneal endothelial cells were mechanically peeled together with the basement membrane and used for RNA extraction from the corneal endothelial cells.
- RNA was subjected to reverse transcription reaction (42 ° C., 60 minutes) by RiverTra Ace (TOYOBO (catalog number: TRT-101)), and CD166 with TAPARA TaqHotStart Version (Takara Bio, catalog number: RR001A) as internal standard.
- CD73 was amplified.
- the same amount of cDNA was amplified by a PCR machine (GeneAmp9700; Applied Biosystems) and the following primer pair. The following primers were used for the PCR reaction. These primers were obtained from Life Technologies Japan Ltd. (catalog number: 10336022).
- IL6-F CACAAGCGCCCTCGGTCCAGTT (SEQ ID NO: 1)
- IL6-R TCTGCCAGTGCCCTCTTGCTGC (SEQ ID NO: 2)
- GAPDH-F GAGTCAACGGATTTGGTCCGT (SEQ ID NO: 3)
- GAPDH-R TTGATTTTGGAGGGGATCTG (SEQ ID NO: 4)
- the amplified DNA fragment was electrophoresed on a 1.5% agarose gel (Nacalai Tesque, catalog number: 01149-76) and detected by staining with ethidium bromide (Nacalai Tesque, catalog number: 14603-51).
- RNA extraction was performed with RneasyMini (QIAGEN). PCR was performed using 277 ng of total RNA reverse transcribed with ReverseAce (Toyobo) and cDNA synthesis as a template. 10 ⁇ l of PCR solution containing 1 ⁇ l of reaction mixture for single-stranded cDNA synthesis was added at 94 ° C. For 1 minute and then 94 ° C. for 1 minute, 54 ° C. for 30 seconds and 72 ° C.
- IL-6 sense primer cacaagcgccttcgggtccagtt (SEQ ID NO: 1)
- IL-6 antisense primer tctgcccagtgcctctttgctgctgc (SEQ ID NO: 2)
- ELTSA method (BrdU): seeded in a 96-well culture plate at a seeding density of 5,000 cells / well and cultured overnight. Thereafter, 5-bromo-2′-deoxyuridine (BrdU) was added to the medium and cultured overnight. The medium was removed, and a fixing solution (Amersham cell propagation biotrak ELISA system, version 2) was added and incubated at room temperature for 30 minutes.
- the fixing solution was removed, and a blocking solution (Amersham cell propagation biotrak ELISA system, version 2) was added and left at room temperature for 30 minutes. Subsequently, the blocking solution was removed, a peroxidase-conjugated anti-BrdU antibody was added, and the mixture was allowed to stand at room temperature for 90 minutes.
- the plate was washed three times with the washing buffer, TMB (3,3 ′, 5,5′-tetramethylbenzidine) substrate (Amersham cell purification biotrak ELISA system, version 2) was added, and the plate was allowed to stand for 5 to 30 minutes. The reaction was stopped with 1 M sulfuric acid, and the absorbance at 450 nm was measured with a plate reader.
- PBS phosphate buffered saline
- Example 1 Transition of cell cycle of corneal endothelial cell by suppressing cyclin-dependent kinase inhibitor by inhibiting p38MAP kinase signal
- inhibition of p38 MAP kinase signal is shown to suppress cyclin-dependent kinase inhibitors and shift the cell cycle of corneal endothelial cells.
- corneal endothelial cells cultured from a research cornea imported from Seattle Eye Bank were cultured and used for the following examination.
- SB203580 13067, Cayman
- p27, p21, and p16 which are cyclin-dependent kinase inhibitors, was examined 20 days later by Western blotting.
- p27, p21, and p16 were all suppressed by the addition of SB203580 (FIG. 1, A; showing p27, p21, p16, and GAPDH in order from the top.
- the left lane is control, the center is SB203580 10 ⁇ M, and the right lane is SB203580 30 ⁇ M. .)
- p27, p21, and p16 have been reported to be cyclin-dependent kinase inhibitors that negatively regulate cell proliferation of corneal endothelial cells.
- Rb protein phosphorylation and cyclin D1 and D3 expression as molecules involved in the G1 / S phase of the cell cycle were examined by Western blotting. The results are shown in FIG. The expression of these molecules was promoted 12 hours and 24 hours after addition of SB203580 (B; two stages from the top, p-pRb, cyclin D1, cyclin D3, and GAPDH are shown. The upper side in each two stages. Shows stimulation with control, lower SB203580 (10 ⁇ M), left lane shows 12 hours, right lane shows 24 hours).
- Example 2 Promotion of cell proliferation of corneal endothelial cells by p38 MAP kinase inhibitor
- promotion of cell proliferation of corneal endothelial cells by a p38 MAP kinase inhibitor was demonstrated.
- the cultured human corneal endothelial cells were stimulated with SB203580, a p38 MAP kinase inhibitor, and immunostained based on the experimental procedure described herein above with Ki67 (Dako, M7240), a marker for cell proliferation, 3 days later. went. The method is as described above.
- Example 3 Promotion of cell proliferation of corneal endothelium with p38 MAP kinase inhibitor in a rabbit partial corneal endothelial dysfunction model
- p38 MAP kinase inhibitor in this example, it was examined whether inhibition of p38 MAP kinase signal promotes cell proliferation of corneal endothelium in vivo using a rabbit partial corneal endothelial injury model.
- a 7 mm diameter stainless steel tip is immersed in liquid nitrogen and cooled, and then contacted with the central cornea of a Japanese white rabbit under general anesthesia (obtained from Oriental Bioservice) for 15 seconds, and the central corneal endothelial cells are partially Dropped out. Thereafter, 50 ⁇ l of SB203580 adjusted to 10 mM was administered by instillation 4 times a day for 2 days.
- a base was instilled into an eye in which a partial corneal endothelial disorder was similarly produced, and a photograph was taken. Further, the cornea was excised and excised, and the wound area of the corneal endothelium was stained and observed with Alizarin Red S (Nacalai Tesque, CI-58005). Furthermore, immunostaining of corneal tissue was performed with Ki67, which is a cell proliferation marker. Immunostaining used the same method as the above-mentioned Example etc.
- FIG. 3 shows the anterior segment photograph after 50 ⁇ l of SB203580 adjusted to 10 mM on the right side of the left panel photograph once a day for 4 days for 2 days, the upper right photograph shows the whole image, and the lower right photograph shows alizarin.
- the range of corneal endothelial wounds by staining is shown.
- the upper right photo shows the whole image, and the lower right photo shows the area of the corneal endothelial wound by alizarin staining.
- the corneal transparency of SB203580 was rapidly recovered from the anterior segment photograph.
- the corneal endothelium was stained with alizarin staining after euthanasia, the cornea was excised, and the SB203580 instillation group was smaller than the control.
- the wound area was significantly reduced in the SB203580 eye drop group, and inhibition of p38 MAP kinase signal was shown to promote wound healing of the corneal endothelium.
- the rabbit model is known to be a good model that can be extrapolated for primates, particularly humans. From the results of this example, inhibition of p38 MAP kinase signal promotes corneal endothelium wound healing in primates including humans. It is expected to do.
- FIG. 1 the result of immunostaining the corneal tissue with Ki67, which is a marker for cell proliferation, is shown in FIG.
- the left side of the photograph shows a control
- the right side shows a representative example (10 mM) of an individual who received SB203580 instillation.
- the ratio of Ki67 positive cells is shown for control (left) and SB203580 stimulation (10 mM).
- Example 4 Suppression of decrease in corneal endothelial cell density by p38 MAP kinase inhibitor
- inhibition of p38 MAP kinase signal is shown to suppress a decrease in cell density due to cell enlargement that occurs in a culture environment.
- Figure 5 shows the results. Cultured human corneal endothelial cells are stimulated at various concentrations using SB203580, a p38 MAP kinase inhibitor, and phase contrast micrographs after 20 days are shown (upper panel). Depending on the concentration of SB203580, the decrease in cell density due to culture was inhibited, and the cell density increased (lower panel).
- Example 5 Maintaining a pump function and a barrier function that are functions of a corneal endothelial cell by a p38 MAP kinase inhibitor and suppressing a decrease in density
- p38MAP kinase signal inhibition maintained the pump function and the barrier function to inhibit the cell density reduction due to culture.
- Cultured human corneal endothelial cells were stimulated at various concentrations using SB203580, a p38 MAP kinase inhibitor, and after 20 days, Na + / K + -Immunostaining with ATPase and ZO-1.
- corneal endothelial cells by p38MAP kinase signaling inhibition maintained in all cell Na + / K + -ATPase and ZO-1 and has normal function expressing, suppressing a decrease in hypertrophy and cell density of the corneal endothelial cells It was shown that. This is understood that p38 MAP kinase signal inhibition does not lose cell function or stratify, but suppresses cellular senescence while maintaining normal cell function.
- the p38 MAP kinase inhibitor maintains the pump function and the barrier function, which are functions of the corneal endothelial cells, and suppresses the decrease in density.
- Example 6 p38 MAP kinase inhibitor suppresses cytokine production by corneal endothelial cells
- cytokine expression patterns in human corneal endothelial cultures were examined using a cytokine antibody array (Proteome Profiler, # ARY005, R & D Systems) on which 36 types of antibodies were blotted.
- FIG. 7 signals of GROa, sICAM-1, IL-6, IL-8, IL-23, MCP-1, MIF, and SerpinE1 were detected regardless of the presence or absence of SB203580.
- cytokines other than serpinE1 were decreased as compared to vehicle. This indicates that cytokine production caused by the culture environment of corneal endothelial cells is suppressed.
- production of cytokines such as IL-6 has increased due to cell aging, and attention has been paid to be involved in aging. Therefore, whether to suppress the production of IL-6 was examined by PCR and ELISA. The results are shown in FIG.
- IL-6 production was reduced by adding SB203580 and culturing compared to control. Quantification of the expression level of IL-6 in human corneal endothelial cells by ELISA (IL-6) and RT-PCR was performed as described in the experimental method described above.
- Example 6 Examination of effect on cell death by p38 MAP kinase inhibitor
- a p38 MAP kinase inhibitor suppresses cell death of the corneal endothelium.
- cultured human corneal endothelial cells were stimulated with 100 J / m 2 of ultraviolet light (UV) to induce cell death, and SB203580 (used at 10 ⁇ M) was used. The effect of was examined. The examination was performed by counting the number of cells.
- UV ultraviolet light
- the phase contrast micrograph (left) is 12 hours after UV irradiation.
- the right is a graph 12 hours after UV irradiation, expressed as a ratio of the number of viable cells to the control.
- the number of viable cells decreases by UV irradiation, but increases significantly by SB203580. From this, it is understood that inhibition of p38 MAP kinase signal suppresses cell damage of corneal endothelial cells and suppresses cell death.
- Example 7 Examination of effect on apoptosis by p38 MAP kinase inhibitor
- caspase 3 and PARP which are the execution molecules of apoptosis by UV irradiation, are suppressed by activation, and whether the expression of phosphorylated histone H2AX induced by double-strand break of DNA by UV irradiation is suppressed Whether or not was confirmed by Western blot according to the experimental procedure described herein above.
- anti-caspase 3 antibody 9662, Cell Signaling
- anti-PARP antibody 9542, Cell Signaling
- anti-H2AX antibody 05-636, Millipore
- anti-GAPDH antibody 2118, The conditions for Cell Signaling were as follows: 100 J / m 2 .
- SB203580 As the p38 MAP kinase signal inhibitor, SB203580 was used, and its concentration was 10 ⁇ M.
- FIG. The left shows that SB203580 suppresses activation by cleavage of caspase 3 and PARP, which are molecules that undergo apoptosis by UV irradiation.
- the right shows that SB203580 suppresses the expression of phosphorylated histone H2AX induced by double-strand breakage of DNA by UV irradiation. From these results, it was shown that p38 MAP kinase signal inhibition suppresses apoptosis of corneal endothelial cells.
- p38 MAP kinase signal inhibition promotes cell proliferation of corneal endothelial cells, suppresses cellular senescence, and suppresses cell death, and thus is a target for treatment and prevention of corneal endothelial injury. It was.
- ophthalmic administration, intra-atrial administration, subconjunctival injection, systemic administration, etc. of the p38 MAP kinase inhibitor used in this study have the potential for development as therapeutic agents.
- Example 8 Promotion of growth with various p38 MAPK inhibitors This example demonstrates the promotion of proliferation with various p38 MAPK inhibitors, and demonstrates that the effects of the present invention are not limited to specific p38 MAPK inhibitors but are seen with p38 MAPK inhibitors in general. did. In this example, all of the effects of the present invention are caused not by the inhibition of other kinases but by the inhibition of p38 MAPK by using a reagent that is supposed to have an inhibitory action specifically on p38 MAPK. Proved that.
- SB203580 (4- (4-fluorophenyl) -2- (4-methylsulfinylphenyl) -5- (4-pyridyl) -1H-imidazole) (Cayman, catalog number: 13067): SB203580 is a MAPK It is known to be a specific (selective) inhibitor (Biochem Biophys Res Commun. 1999 Oct 5; 263 (3): 825-31.). Therefore, the experimental results with SB203580 can be identified as being due to inhibition of MAPK.
- Semapimod N, N′-bis [3,5-bis [1- [2- (aminoiminomethyl) hydrazono] ethyl] phenyl] decandiamide
- MAPK Retriepsin
- Semapimod is known to be a good inhibitor of MAPK (Gastroenterology. 2002 Jan; 122 (1): 7-14 .; Transplant Proc. 1998 Mar; 30 (2): 409-10 .; Auton Neurosci.2000 Dec 20; 85 (1-3): 141-7.; Gastroenterology.2009 Feb; 136 (2): 619-29.doi: 10.1053 / j.gastro.2008.10.10.17. pub 2008 Oct 9.).
- BIRB796 Doramapimod; N- [3-tert-butyl-1- (4-methylphenyl) pyrazol-5-yl] -N ′-[4- (2-morpholinoethoxy) -1-naphthyl] urea) (Selleck Chemicals, catalog number: S1574): BIRB796 is known to be a specific (selective) inhibitor of MAPK (Nat Struct Biol. 2002 Apr; 9 (4): 268-72.). Therefore, the experimental results with BIRB796 can be identified as due to inhibition of MAPK.
- PH-797804 (3- (3-bromo-4-((2,4-difluorobenzyl) oxy) -6-methyl-2-oxopyridin-1 (2H) -yl) -N, 4-dimethyl Benzamide) (Selleck Chemicals, catalog number: S2726): PH-79804 is known to be a specific (selective) inhibitor of MAPK (Bioorg Med Chem Lett. 2011 Jul 1; 21 (13): 4066). -71.doi: 10.016 / j.bmcl.2011.04.121.Epub 2011 May 11.). Therefore, the experimental results with PH-79804 can be identified as being due to inhibition of MAPK.
- VX-702 (1- (carbamoyl-6- (2,4-difluorophenyl) pyridin-2-yl) -1- (2,6-difluorophenyl) urea) (Selleck Chemicals, catalog number: S6005) : VX-702 is known to be a specific (selective) inhibitor of MAPK (Curr Opin Investig Drugs. 2006 Nov; 7 (11): 1020-5.). Therefore, the experimental results with VX-702 can be identified as being due to inhibition of MAPK.
- LY2288820 (Rarimetinib; 5- (2- (tert-butyl) -5- (4-fluorophenyl) -1H-imidazol-4-yl) -3-neopentyl-3H-imidazo [4,5 -B] Pyridin-2-amine) (Selleck Chemicals, catalog number: S1494): LY2288820 is known to be a potent specific (selective) inhibitor of MAPK (Br J Haematol.
- TAK-715 (2-benzamido-4- [2-ethyl-4- (3-methylphenyl) thiazol-5-yl] pyridine) (Selleck Chemicals, catalog number: S2928): TAK-715 is MAPK Is known to be a potent specific (selective) inhibitor (J Med Chem. 2005 Sep 22; 48 (19): 5966-79.). Therefore, the experimental results with TAK-715 can be identified as due to inhibition of MAPK.
- SB203580 (4- (4-fluorophenyl) -2- (4-methylsulfinylphenyl) -5- (4-pyridyl) -1H-imidazole)
- the medium was removed from the culture dish in which cynomolgus monkey corneal endothelial cells (Nissei Bairis) were being cultured, and a phosphate buffer (Nacalai Tesque, 14249-95) previously warmed to 37 ° C. was added and washed. . This operation was repeated twice. After removing the phosphate buffer, 0.05% Trypsin-EDTA (Nacalai Tesque, 35554-64) was added and incubated at 37 ° C. (5% CO 2 ) for 10 minutes.
- DMEM + 1% P / S serum-free medium
- SB203580 (Cayman, catalog number: 13067) was added to a final concentration of 0.3, 1, 3, 10, 30, 100 ⁇ mol / l dissolved in DMSO in a medium of DMEM + 10% FBS + 1% P / S. And cultured for 24 hours. As a control, DMSO was added.
- the cells are then suspended in DMEM (Nacalai Tesque, 08456-94) + 10% FBS (Biowest, S1820-500) + 1% penicillin / streptomycin (Nacalai Tesque, catalog number: 26252-94) and centrifuged at 1200 rpm for 3 minutes. Was recovered.
- the 96-well plate was treated with FNC coating mix (50 ml (AES-0407), ATHENA, catalog number: 0407).
- Monkey corneal endothelial cells (lot: 20120204-3L-P8) were seeded at a rate of 5000 cells per well in a coated 96-well plate and cultured at 37 ° C. (5% CO 2 ) for 30 hours.
- DMEM + 1% P / S serum-free medium
- Semapimod HCl MedKoo Biosciences, catalog number: 202590, so as to have final concentrations of 0.1, 0.3, 1, 3, 10 ⁇ mol / l dissolved in DMSO in a medium of DMEM + 10% FBS + 1% P / S, Lot number: SMC20120918
- DMSO was added as a control.
- BrdU labeling reagent (Amersham Cell Proliferation Biotrak ELISA System, Version 2, GE Healthbare, catalog number: RPN250) was added to the medium of DMEM + 10% FBS + 1% P / S at a final ratio of 1: 1000. Semapimod HCl was added at a concentration of 1, 0.3, 1, 3, 10 ⁇ mol / l and cultured for 24 hours. As a control, DMSO was added. After 24 hours, BrdU ELISA was performed using Amersham Cell Proliferation Biotrak ELISA System, Version 2 (GE Healthbare, catalog number: RPN250), and absorbance at 450 nm was measured.
- BrdU labeling reagent (Amersham Cell Proliferation Biotrak ELISA System, Version 2, GE Healthbare, catalog number: RPN250) was added to the medium of DMEM + 10% FBS + 1% P / S at a final ratio of 1: 1000.
- BIRB796 Doramapimod
- DMSO was added as a control.
- BrdU ELISA was performed using Amersham Cell Proliferation Biotrak ELISA System, Version 2 (GE Healthbare, catalog number: RPN250), and absorbance at 450 nm was measured.
- PH-797804 (3- (3-bromo-4-((2,4-difluorobenzyl) oxy) -6-methyl-2-oxopyridin-1 (2H) -yl) -N, 4-dimethyl Benzamide)
- the medium was removed from the culture dish in which cynomolgus monkey corneal endothelial cells were being cultured, and PBS ( ⁇ ) preliminarily warmed to 37 ° C. was added for washing. This operation was repeated twice. After removing PBS ( ⁇ ), 0.05% Trypsin-EDTA (Nacalai Tesque, 35554-64) was added and incubated at 37 ° C. (5% CO 2 ) for 10 minutes.
- the cells are then suspended in DMEM (Nacalai Tesque, 08456-94) + 10% FBS (Biowest, S1820-500) + 1% penicillin / streptomycin (Nacalai Tesque, catalog number: 26252-94) and centrifuged at 1200 rpm for 3 minutes. Was recovered.
- the 96-well plate was treated with FNC coating mix (50 ml (AES-0407), ATHENA, catalog number: 0407).
- Monkey corneal endothelial cells (lot: 20120204-3L-P9) were seeded at a rate of 5000 cells per well in a coated 96-well plate and cultured at 37 ° C. (5% CO 2 ) for 30 hours.
- DMEM + 1% P / S serum-free medium
- PH-798044 Selleck Chemicals, catalog number
- BrdU labeling reagent (Amersham Cell Proliferation Biotrak ELISA System, Version 2, GE Healthbare, catalog number: RPN250) was added to the medium of DMEM + 10% FBS + 1% P / S at a final ratio of 1: 1000. PH-797804 was cultured for 24 hours at 1, 0.3, 1, 3, 10, 30 ⁇ mol / l. As a control, DMSO was added. After 24 hours, BrdU ELISA was performed using Amersham Cell Proliferation Biotrak ELISA System, Version 2 (GE Healthbare, catalog number: RPN250), and absorbance at 450 nm was measured.
- VX-702 (1- (carbamoyl-6- (2,4-difluorophenyl) pyridin-2-yl) -1- (2,6-difluorophenyl) urea (2- (2,4-difluorophenyl) ) -6- (1- (2,6-difluorophenyl) ureido) nicotinamide))
- the medium was removed from the culture dish in which cynomolgus monkey corneal endothelial cells were being cultured, and PBS ( ⁇ ) preliminarily warmed to 37 ° C. was added for washing. This operation was repeated twice.
- Trypsin-EDTA (Nacalai Tesque, 35554-64) was added and incubated at 37 ° C. (5% CO 2 ) for 10 minutes. The cells are then suspended in DMEM (Nacalai Tesque, 08456-94) + 10% FBS (Biowest, S1820-500) + 1% penicillin / streptomycin (Nacalai Tesque, catalog number: 26252-94) and centrifuged at 1200 rpm for 3 minutes. Was recovered. The 96-well plate was treated with FNC coating mix (50 ml (AES-0407), ATHENA, catalog number: 0407).
- FNC coating mix 50 ml (AES-0407), ATHENA, catalog number: 0407).
- Monkey corneal endothelial cells (lot: 20120204-3L-P9) were seeded at a rate of 5000 cells per well in a coated 96-well plate and cultured at 37 ° C. (5% CO 2 ) for 30 hours. After 30 hours, the medium was removed, and the medium was changed to serum-free medium: DMEM + 1% P / S and cultured for 18 hours. After 18 hours, VX-702 (Selleck Chemicals, so that the final concentration was 0.1, 0.3, 1, 3, 10, 30, 100 ⁇ mol / l dissolved in DMSO in a medium of DMEM + 10% FBS + 1% P / S. Catalog number: S6005, lot number: 02) was added and cultured for 24 hours.
- DMSO DMSO was added.
- BrdU labeling reagent (Amersham Cell Proliferation Biotrak ELISA System, Version 2, GE Healthbare, catalog number: RPN250) was added to the medium of DMEM + 10% FBS + 1% P / S at a final ratio of 1: 1000.
- VX-702 was added so that it might become 1, 0.3, 1, 3, 10, 30, 100 micromol / l, and it culture
- DMSO was added.
- BrdU ELISA was performed using Amersham Cell Proliferation Biotrak ELISA System, Version 2 (GE Healthbare, catalog number: RPN250), and absorbance at 450 nm was measured.
- LY2288820 (Rarimetinib; 5- (2- (tert-butyl) -5- (4-fluorophenyl) -1H-imidazol-4-yl) -3-neopentyl-3H-imidazo [4,5 -B] pyridin-2-amine)
- the medium was removed from the culture dish in which cynomolgus monkey corneal endothelial cells were being cultured, and PBS ( ⁇ ) preliminarily warmed to 37 ° C. was added for washing. This operation was repeated twice. After removing PBS ( ⁇ ), 0.05% Trypsin-EDTA (Nacalai Tesque, 35554-64) was added and incubated at 37 ° C.
- DMEM + 1% P / S serum-free medium
- LY2288820 (Selleck Chemicals, catalog number: S1494) was prepared to a final concentration of 0.1, 0.3, 1, 3, 10, 30 ⁇ mol / l dissolved in DMEM + 10% FBS + 1% P / S medium with DMSO. , Lot number: 01) was added and cultured for 24 hours. As a control, DMSO was added.
- BrdU labeling reagent (Amersham Cell Proliferation Biotrak ELISA System, Version 2, GE Healthbare, catalog number: RPN250) was added to the medium of DMEM + 10% FBS + 1% P / S at a final ratio of 1: 1000.
- LY2288820 was added at 1, 0.3, 1, 3, 10, 30 ⁇ mol / l and cultured for 24 hours.
- DMSO was added as a control.
- BrdU ELISA was performed using Amersham Cell Proliferation Biotrak ELISA System, Version 2 (GE Healthbare, catalog number: RPN250), and absorbance at 450 nm was measured.
- TAK-715 (2-benzamido-4- [2-ethyl-4- (3-methylphenyl) thiazol-5-yl] pyridine)
- the medium was removed from the culture dish in which cynomolgus monkey corneal endothelial cells were being cultured, and PBS ( ⁇ ) preliminarily warmed to 37 ° C. was added for washing. This operation was repeated twice. After removing PBS ( ⁇ ), 0.05% Trypsin-EDTA (Nacalai Tesque, 35554-64) was added and incubated at 37 ° C. (5% CO 2 ) for 10 minutes.
- the cells are then suspended in DMEM (Nacalai Tesque, 08456-94) + 10% FBS (Biowest, S1820-500) + 1% penicin / streptomycin (Nacalai Tesque, catalog number: 26252-94) and centrifuged at 1200 rpm for 3 minutes. Was recovered.
- the 96-well plate was treated with FNC coating mix (50 ml (AES-0407), ATHENA, catalog number: 0407).
- Monkey corneal endothelial cells (lot: 20120204-3L-P9) were seeded at a rate of 5000 cells per well in a coated 96-well plate and cultured at 37 ° C. (5% CO 2 ) for 30 hours.
- BrdU labeling reagent (Amersham Cell Proliferation Biotrak ELISA System, Version 2, GE Healthbare, catalog number: RPN250) was added to the medium of DMEM + 10% FBS + 1% P / S at a final ratio of 1: 1000. TAK-715 was added at a concentration of 1, 0.3, 1, 3, 10, 100 ⁇ mol / l and cultured for 24 hours. As a control, DMSO was added. After 24 hours, BrdU ELISA was performed using Amersham Cell Proliferation Biotrak ELISA System, Version 2 (GE Healthbare, catalog number: RPN250), and absorbance at 450 nm was measured.
- Example 9 Effect in various animal species
- This example demonstrates that not only monkeys but also humans can promote growth with various p38 MAPK inhibitors, and the effects of the present invention are not limited to specific animal species but include humans. It was demonstrated that this effect is seen in a wide range of animal species.
- the reagents used in Example 8 were used in all cases.
- the cells are then suspended in DMEM (Nacalai Tesque, 08456-94) + 10% FBS (Biowest, S1820-500) + 1% penicillin / streptomycin (Nacalai Tesque, catalog number: 26252-94) and centrifuged at 1200 rpm for 3 minutes. Was recovered.
- the 96-well plate was treated with FNC coating mix (50 ml (AES-0407), ATHENA, catalog number: 0407).
- Monkey corneal endothelial cells (lot: 20120204-3L-P9) were seeded at a rate of 3000 per well in a coated 96-well plate and cultured at 37 ° C. (5% CO 2 ) for 30 hours. After 30 hours, the medium was removed, and the medium was changed to serum-free medium: DMEM + 1% P / S and cultured for 18 hours.
- SB203580 (Cayman, catalog number: 13067) was dissolved in DMSO in a medium of DMEM + 10% FBS + 1% P / S to a final concentration of 10 ⁇ mol / l, and Semapimod HCl (final concentration 1 ⁇ mol / l).
- PH-797804 (Selleck Chemicals, catalog number: S2726, lot number: 01), so that the final concentration is 3 ⁇ mol / l.
- X-702 (Selleck Chemicals, catalog number: S6005, lot number: 02), LY2288820 (Selleck Chemicals, catalog number: S1494, lot number: 01), final concentration of 3 ⁇ mol / l to a final concentration of 3 ⁇ mol / l.
- TAK-715 (Selleck Chemicals, catalog number: S2928, lot number: 01) was added and cultured for 24 hours. As a control, DMSO was added.
- BrdU labeling reagent (Amersham Cell Proliferation Biotrak ELISA System, Version 2, GE Healthbare, Catalog No .: RPN250) was added at a ratio of 1: 1000 in a molar ratio of 1: 1000 to a medium of DMEM + 10% FBS + 1% P / S.
- the 96-well plate was treated with FNC coating mix (50 ml (AES-0407), ATHENA, catalog number: 0407).
- Human corneal endothelial cells (lot: C1642-P8) were seeded in a coated 96-well plate at a rate of 3000 cells per well in Condition Medium medium for humans and cultured at 37 ° C. (5% CO 2 ) for 30 hours. After 30 hours, the medium was removed, and the medium was changed to serum-free medium: Opti-MEM + 1% P / S and cultured for 18 hours.
- SB203580 (Cayman, catalog number: 13067) at a final concentration of 10 ⁇ mol / l, dissolved in DMSO in human condition medium, SemapimodHCl (MedKoo Biosciences, catalog number to a final concentration of 1 ⁇ mol / l) : 202590, lot number: SMC20120918), BIRB796 (Doramapimod) (Selleck Chemicals, catalog number: S1574, lot number: S157402) to a final concentration of 3 ⁇ mol / l, PH-798044 (final concentration of 1 ⁇ mol / l) Selleck Chemicals, catalog number: S2726, lot number: 01), final concentration 3 ⁇ mol / l X-702 (Selleck Chemicals, catalog number: S6005, lot number: 02), LY2288820 (Selleck Chemicals, catalog number: S1494, lot number: 01), final concentration of 3 ⁇ mol / l to a final concentration of 3 ⁇ mol / / /
- TAK-715 (Selleck Chemicals, catalog number: S2928, lot number: 01) was added and cultured for 24 hours.
- DMSO was added.
- BrdU labeling reagent (Amersham Cell Proliferation Biotrak ELISA System, Version 2, GE Healthbare, Catalog No .: RPN250) was added at a ratio of 1: 1000 in a molar ratio of 1: 1000 to a medium of DMEM + 10% FBS + 1% P / S.
- Example 10 Activation of p38 MAPK induces apoptosis
- p38 MAPK induces apoptosis.
- the medium used was Dulbecco's Modified Eagle Medium (Gibco, 12320-032), 10% FBS, 1% Penicillin-Streptomycin (Nacalai tesque, 26252-94).
- Z-VAD (OMe) -FMK (Wako Pure Chemical Industries, Ltd., 269-02071) was added as a acclimation treatment at a concentration of 10 ⁇ M and incubated at 37 ° C. under 5% CO 2 for 16 hours.
- dimethyl sulfoxide (DMSO) Dimethyl Sulphoxide, Sterile-filtered; nacalai test, 13408-64 which is a reagent solvent was added to the Control group and the anisomysin group.
- DMSO dimethyl sulfoxide
- the medium used was Gibco DMEM, 1% P / S.
- anisomycin anisomsin; Wako Pure Chemical Industries, Ltd., 017-16861
- anisomycin anisomsin; Wako Pure Chemical Industries, Ltd., 017-16861
- anisomysin + Z-VAD-FMK group 10 ⁇ M Z-VAD was added together with anisomycin.
- DMSO DMSO was added.
- the cells were cultured for up to 9 hours. Cell morphology was observed under a phase contrast microscope. I took a picture after 9 hours. Nine hours later, cellular proteins were collected, and the protein expression levels were compared by the Western Blot method.
- Anti-Caspase 3 antibody (cell signaling, 9661S), anti-p38 MAPK antibody (cell signaling, # 9212), and anti-pp38 MAPK antibody (cell signaling, # 4631S) were used as antibodies.
- An anti-GAPDH antibody (MBL, 3H12) was used as an internal standard.
- Example 11 p38 MAPK inhibitor eye drop administration test in a monkey corneal endothelium partial injury model
- a 7mm diameter stainless steel rod with liquid nitrogen to both eyes of two cynomolgus monkeys (purchased from Shiga Medical University)
- contact the cornea and drop the corneal endothelium about 7mm in diameter to create a partially impaired model.
- 50 ⁇ l of SB203580 (3 mM) was applied to the right eye four times a day.
- a phosphate buffer solution as a base was instilled into the left eye as a control.
- a monkey model was prepared and used for the following experiments.
- FIG. 21 is a photograph showing that SB203580 eye drops promote proliferation of primate corneal endothelium.
- FIG. 22 is a counting result showing that SB203580 instillation promotes proliferation of primate corneal endothelium.
- Ki67 positive cells were observed in eyes instilled with SB203580.
- FIG. 23 when the positive cell rate of Ki67 was analyzed, Ki67 positive cells were significantly increased in the eyes instilled with SB203580. Both monkeys confirmed the same trend. From these results, it was shown that, even in primates in general, a p38 MAPK inhibitor acts on the corneal endothelium when administered as an eye drop or the like, and promotes the proliferation of corneal endothelial cells.
- Example 13 p38 MAPK inhibitor suppresses cell death of cultured corneal endothelial cells
- Examination of the effect of p38 MAPK inhibitor on apoptosis of cultured monkey corneal endothelial cells 1 ⁇ 10 5 cultured monkey corneal endothelial cells were seeded on 12 well plates coated with FNC Coating Mix and confluent at 37 ° C. under 5% CO 2 condition. Cultured for about 5 days until reached.
- Medium Dulbecco's Modified Eagle Medium (DMEM, Gibco, 12320-032), 10% FBS, 1% Penicillin-Streptomycin (nacalai tesque, 26252-94)
- each inhibitor was added at the concentration shown in the above table, and incubated at 37 ° C. under 5% CO 2 for 16 hours.
- Dimethyl Sulphoxide, Sterile-filtered (nacalai tests, 13408-64) MSO which is a solvent of each reagent was added to Control group and UV group.
- Gibco DMEM, 1% P / S (penicillin / streptomycin) was used as the medium. Thereafter, the cell supernatant was removed, and the cells were irradiated with UV (100 J / m 2 ). After irradiation, the medium containing each inhibitor was added to the cells again and cultured for 9 hours. Cell morphology and apoptosis were observed under a phase contrast microscope.
- Example 14 p38 MAPK inhibitor suppresses apoptosis of cultured corneal endothelial cells
- the cells after nine hours of culture were stained at 37 ° C. for 20 minutes using MEBCYTO-Apoptosis Kit (Annexin V-FITC Kit) (manufacturer: MBL, Code: 4700). Then, it was fixed with 95% ethanol acetate for 10 minutes. After fixation, it was stained with DAPI Solution (manufacturer: DOJINDO, Code: GA098) for 30 minutes and observed with a confocal microscope.
- MEBCYTO-Apoptosis Kit Annexin V-FITC Kit
- Example 15 p38 MAPK inhibitor suppresses apoptosis of corneal endothelium
- corneal endothelial cells were irradiated with UV100 J / m 2 and stored again at 4 ° C. for 24 hours under light shielding.
- DMSO was used for the Control group
- Optisol-GS registered trademark
- the cornea piece was washed with PBS ( ⁇ ), and stained with Annexin V and DAPI using MEBCYTO-Apoptosis kit (Annexin V-FITC kit) (MBL) (Lot. 027FA). Thereafter, it was fixed by immersing in 95% ethanol cooled at ⁇ 30 ° C. for 30 minutes.
- FIG. 25 shows the fluorescence observation results of observing Annexin V and nuclei.
- any p38 MAPK inhibitor it was shown that the p38 MAPK inhibitor suppresses apoptosis of the corneal endothelium.
- the result of having measured the Annexin V positive cell rate is shown in FIG. All p38 MAPK inhibitors significantly reduced the Annexin V positive cell rate compared to the UV irradiated control. From the above, it was demonstrated that the p38 MAPK inhibitor has an effect of suppressing apoptosis of the corneal endothelium.
- Example 16 Examples of other administration forms of p38 MAP kinase inhibitor
- SB203580 which is a p38 MAP kinase inhibitor
- a preparation prepared as follows is injected into the anterior chamber by a conventional method.
- Preparation examples of drugs to be administered Prepared by diluting a drug (for example, SB203580) in physiological saline or purified water.
- Subconjunctival injection A preparation prepared as follows is injected into the anterior chamber by a conventional method.
- Preparation examples of drugs to be administered Prepared by diluting a drug (for example, SB203580) in physiological saline or purified water.
- Intra-anterior administration with sustained release A sustained-release agent using a carrier such as gelatin or polylactic acid is impregnated with a drug (for example, SB203580) and injected into the anterior chamber.
- a drug for example, SB203580
- a sustained-release agent using a carrier such as gelatin or polylactic acid is impregnated with a drug (for example, SB203580) and injected under the conjunctiva.
- Example 17 Eye drops as formulation examples
- the composition of the test substance at each concentration is shown below.
- SB203580 (available from CALBIOCHEM, catalog number: 559389, etc.) or SB203580 hydrochloride (available from Wako Pure Chemical (193-15611), etc.) or other p38MAP kinase inhibitors: 0.003 g, 0.01 g, 0.03 g 0.05 g or 0.1 g (dose as dehydrochlorinated form) Sodium chloride 0.85g Sodium dihydrogen phosphate dihydrate 0.1g Benzalkonium chloride 0.005g Sodium hydroxide appropriate amount Purified water appropriate amount Total amount 100 mg (pH 7.0).
- O Eye drops can be diluted with a base.
- composition of the substrate are as follows, but can be changed as appropriate.
- a therapeutic or preventive drug for corneal endothelial injury requiring cell proliferation was provided, and in particular, a technique for treating or preventing corneal endothelial wounds was provided.
- Technologies that can be used in industries (pharmaceuticals, etc.) related to technologies related to formulations based on such technologies are provided.
- IL6-F CACAAGCGCCCTTCGGTCCCAGTT
- IL6-R TCTGCCAGTGCCCTCTTTGCTGC
- GAPDH-F GAGTCAACGGATTTGGTCGT
- GAPDH-R TTGATTTTGGAGGGATCTCG
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Abstract
Description
(1)p38MAPキナーゼ阻害薬を含む、細胞増殖、細胞障害抑制または細胞老化抑制を必要とする角膜内皮疾患、障害または状態の治療または予防薬。
(2)前記角膜内皮障害は、フックス角膜内皮ジストロフィ、角膜移植後の持続する角膜内皮密度減少、外傷、眼科手術、加齢、および角膜内皮炎に関連する障害からなる群より選択される少なくとも1つである、項目(1)に記載の治療または予防薬。
(3)前記p38MAPキナーゼ阻害薬は水溶性である、項目(1)または(2)に記載の治療または予防薬。
(4)前記p38MAPキナーゼ阻害薬は、4−(4−フルオロフェニル)−2−(4−ヒドロキシフェニル)−5−(4−ピリジル)−1H−イミダゾール(SB−202190)、trans−4−[4−(4−フルオロフェニル)−5−(2−メトキシ−4−ピリミジニル)−1H−イミダゾール−1−イル]シクロヘキサノール(SB−239063)、4−(4−フルオロフェニル)−2−(4−メチルスルフィニルフェニル)−5−(4−ピリジル)−1H−イミダゾール(SB−203580)、4−(4−フルオロフェニル)−5−(2−メトキシピリミジン−4−イル)−1−(ピペリジン−4−イル)イミダゾール(SB−242235)、4−(4−フルオロフェニル)−2−(4−ヒドロキシ−1−ブチニル)−1−(3−フェニルプロピル)−5−(4−ピリジル)イミダゾール(RWJ−67657)、4−(4−フルオロフェニル)−1−(ピペリジン−4−イル)−5−(4−ピリジル)イミダゾール(HEP−689)、(S)−2−(2−アミノ−3−フェニルプロピルアミノ)−1−メチル−5−(2−ナフチル)−4−(4−ピリジル)ピリミジン−6−オン(AMG−548)、2−クロロ−4−(4−フルオロ−2−メチルアニリノ)−2’−メチルベンゾフェノン(EO−1606)、3−(4−クロロフェニル)−5−(1−ヒドロキシアセチルピペリジン−4−イル)−4−(ピリミジン−4−イル)ピラゾール(SD−06)、5−(2,6−ジクロロフェニル)−2−(2,4−ジフルオロフェニルチオ)ピリミド[3,4−b]ピリダジン−6−オン(VX−745)、4−アセチルアミノ−N−tert−ブチルベンズアミド(CPI−1189)、N−[3−tert−ブチル−1−(4−メチルフェニル)ピラゾール−5−イル]−N’−[4−(2−モルホリノエトキシ)−1−ナフチル]ウレア(ドラマピモド(Doramapimod))、2−ベンズアミド−4−[2−エチル−4−(3−メチルフェニル)チアゾール−5−イル]ピリジン(TAK−715)、タルマピモド(Talmapimod;SCIO−469)、1−(カルバモイル−6−(2,4−ジフルオロフェニル)ピリジン−2−イル)−1−(2,6−ジフルオロフェニル)尿素(VX−702;2−(2,4−ジフルオロフェニル)−6−(1−(2,6−ジフルオロフェニル)ウレイド)ニコチンアミド)、ジルマピモド(dilmapimod;GSK−681323)、4−(5−(シクロプロピルカルバモイル)−2−メチルフェニルアミノ)−5−メチル−N−プロピルピロロ(1,2−f)(1,2,4)トリアジン−6−カルボキサミド(PS−540446)、抗FGF−7抗体(SC−80036)、AVE−9940、[5−アミノ−1−(4−フルオロフェニル)−1H−ピラゾル−4−イル][3−(3−アミノ−2−ヒドロキシプロポキシ)フェニル]メタノン(RO−320−1195)、1−(1,3−ジヒドロキシプロプ−2−イル)−4−(4−フルオロフェニル)−5−[2−フェノキシピリミジン−4−イル]イミダゾール(SB−281832)、2−[5−({4−[(4−フルオロフェニル)メチル]ピペリジン−1−イル}カルボニル)−6−メトキシ−1−メチル−1H−インドル−3−イル]−N,N’−ジメチル−2−オキソアセトアミド(SCIO−323)、2−(5−tert−ブチル−2−m−トリル−2H−ピラゾル−3−イル)−2−ヒドロキシイミド−N−[4−(2−モルホリン−4−イル−エトキシ)−ナフタレン−1−イル]−アセトアミド(KC−706)、N,N’−ビス[3,5−ビス[1−(2−アミジノヒドラゾノ)エチル]フェニル]デカンジアミド、N,N’−ビス[3,5−ビス[1−[2−(アミノイミノメチル)ヒドラゾノ]エチル]フェニル]デカンジアミド(セマピモド(Semapimod))、3−(3−ブロモ−4−((2,4−ジフルオロベンジル)オキシ)−6−メチル−2−オキソピリジン−1(2H)−イル)−N,4−ジメチルベンズアミド(PH−797804)、および5−(2−(tert−ブチル)−5−(4−フルオロフェニル)−1H−イミダゾール−4−イル)−3−ネオペンチル−3H−イミダゾ[4,5−b]ピリジン−2−アミン(LY2228820)からなる群より選択される少なくとも1つを含む、項目(1)~(3)のいずれか1項に記載の治療または予防薬。
(5)前記p38MAPキナーゼ阻害薬は4−[4−(4−フルオロフェニル)−2−(4−メチルスルフィニルフェニル)−1H−イミダゾール−5−イル]ピリジン)(SB203580)またはその塩を含む、項目(1)~(4)のいずれか1項に記載の治療または予防薬。
(6)前記p38MAPキナーゼ阻害薬は4−[4−(4−フルオロフェニル)−2−(4−メチルスルフィニルフェニル)−1H−イミダゾール−5−イル]ピリジン)(SB203580)塩酸塩を含む、項目(1)~(5)のいずれか1項に記載の治療または予防薬。
(7)細胞増殖を必要とする角膜内皮障害の治療または予防のためのp38MAPキナーゼ阻害物質。
(8)p38MAPキナーゼ阻害薬の有効量をそれを必要な被験体に投与する工程を含む、細胞増殖を必要とする角膜内皮障害の治療または予防のための方法。
本明細書において「細胞分裂因子(マイトージェン)活性化タンパク質(MAP)キナーゼ」とは、マイトージェン活性化タンパク質(MAP)をリン酸化する酵素であり、セリン/トレオニンキナーゼのファミリーである。MAPキナーゼは、様々な細胞外刺激に応答して活性化され、細胞表面から核へのシグナル伝達を仲介するタンパク質セリン/スレオニンキナーゼ群である。MAPキナーゼはまた、細胞外シグナル調節性プロテインキナーゼ(extracellular signal−regulated protein kinases)またはERKとも呼ばれ、3キナーゼカスケードの末端酵素である。関係するが区切られたシグナル伝達経路に対する3キナーゼカスケードの反復が、一経路内で逐次的に作用するモジュール多機能シグナル伝達要素としてのMAPキナーゼ経路の概念を生み、この経路ではそれぞれの酵素がリン酸化してそれによりシーケンスの次のメンバーを活性化することが特徴である。このようにして、標準的MAPキナーゼモジュールは3つのプロテインキナーゼからなる。すなわち、あるMAPキナーゼキナーゼ(またはMEKK)があるMAPキナーゼキナーゼ(またはMEK)を活性化し、これが、順に、あるMAPK/ERK酵素を活性化する。MAPK/ERK、JNK(c−junアミノ末端プロテインキナーゼ(またはSAPK)))、およびp38カスケードは、それぞれMEKK、MEKおよびERK、またはMAPキナーゼスーパーファミリーメンバーを含む3つの酵素モジュールからなる。様々な細胞外シグナルはそれらのそれぞれの細胞表面レセプターと連合すると初期事象をトリガーし、次いでこのシグナルが細胞内部に伝達され、そこで適切なカスケードを活性化する。
本明細書において用いられる分子生物学的手法、生化学的手法、微生物学的手法は、当該分野において周知であり慣用されるものであり、例えば、Sambrook J.et al.(1989).Molecular Cloning:A Laboratory Manual,Cold Spring Harborおよびその3rd Ed.(2001); Ausubel,F.M.(1987).Current Protocols in Molecular Biology,Greene Pub.Associates and Wiley−Interscience;Ausubel,F.M.(1989).Short Protocols in Molecular Biology:A Compendium of Methods from Current Protocols in Molecular Biology,Greene Pub.Associates and Wiley−Interscience; Innis,M.A.(1990).PCR Protocols:A Guide to Methods and Applications,Academic Press; Ausubel,F.M.(1992).Short Protocols in Molecular Biology:A Compendium of Methods from Current Protocols in Molecular Biology,Greene Pub.Associates; Ausubel,F.M.(1995).Short Protocols in Molecular Biology:A Compendium of Methods from Current Protocols in Molecular Biology,Greene Pub.Associates; Innis,M.A.et al.(1995).PCR Strategies,Academic Press; Ausubel,F.M.(1999).Short Protocols in Molecular Biology:A Compendium of Methods from Current Protocols in Molecular Biology,Wiley,and annual updates; Sninsky,J.J.et al.(1999).PCR Applications:Protocols for Functional Genomics,Academic Press、Gait,M.J.(1985).Oligonucleotide Synthesis:A Practical Approach,IRLPress; Gait,M.J.(1990).Oligonucleotide Synthesis:A Practical Approach,IRL Press; Eckstein,F.(1991).Oligonucleotides and Analogues:A Practical Approach,IRL Press; Adams,R.L.etal.(1992).The Biochemistry of the Nucleic Acids,Chapman&Hall; Shabarova,Z.et al.(1994).Advanced Organic Chemistry of Nucleic Acids,Weinheim; Blackburn,G.M.et al.(1996).Nucleic Acids in Chemistry and Biology,Oxford University Press; Hermanson,G.T.(I996).Bioconjugate Techniques,Academic Press、別冊実験医学「遺伝子導入&発現解析実験法」羊土社、1997などに記載されている。角膜内皮細胞については、Nancy Joyceらの報告{Joyce,2004 #161}{Joyce,2003 #7}がよく知られているが、前述のごとく長期培養、継代培養により線維芽細胞様の形質転換を生じ、効率的な培養法の研究が現在も行われている。これらは本明細書において関連する部分(全部であり得る)が参考として援用される。
以下に好ましい実施形態の説明を記載するが、この実施形態は本発明の例示であり、本発明の範囲はそのような好ましい実施形態に限定されないことが理解されるべきである。当業者はまた、以下のような好ましい実施例を参考にして、本発明の範囲内にある改変、変更などを容易に行うことができることが理解されるべきである。これらの実施形態について、当業者は適宜、任意の実施形態を組み合わせ得る。
12個のヒトドナー角膜は、SightLifeTMアイバンクから入手し、全ての角膜を、初代培養前に14日未満の期間にわたり、保存培地(Optisol;Chiron Vision Corporation,Irvine,CA)中、4℃で保存した。
2サンプルの比較の平均値における統計的有意差(P値)は、スチューデントのt検定を用いて決定した。複数のサンプルセットの比較における統計的有意差は、ダネットの多重比較検定を用いて解析した。グラフに示す値は平均±SEを表す。
・ヒト角膜内皮細胞(HCEC、入手先および培養方法):HCECは、以下のように培養した。簡単に述べると、シアトルアイバンクから購入した研究用角膜より、角膜内皮細胞を含むデスメ膜を剥離し、角膜内皮細胞を基底膜とともに機械的に剥離して、コラゲナーゼ(ROCHE カタログ番号:10 103 586 001)を用いて基底膜よりはがして(代表的には、1mg/mLコラゲナーゼA(Roche Applied Science)を用いて37℃にて2時間処理した。)回収後、初代培養を行った。培地はヒトはOpti−MEM I Reduced−Serum Medium,Liquid(INVITROGEN カタログ番号:31985−070)に、8%ウシ胎仔血清(FBS)(BIOWEST、カタログ番号:S1820−500)、200mg/ml CaCl2・2H2O(SIGMA カタログ番号:C7902−500G)、0.08% コンドロイチン硫酸(SIGMA カタログ番号:C9819−5G)、20μg/ml アスコルビン酸(SIGMA カタログ番号:A4544−25G)、50μg/ml ゲンタマイシン(INVITROGEN カタログ番号:15710−064)および5ng/ml EGF(INVITROGEN カタログ番号:PHG0311)を加えた3T3フィーダー細胞用に馴化させたものを用いた。具体的には、37℃での消化後、個々の角膜から得られたHCECを培養培地中に再懸濁させ、FNC Coating Mix(登録商標)でコーティングした12ウェルプレートの1ウェルにプレーティングした。培養培地は、一部の改変を加えた公開されたプロトコルに従って調製した。簡単に述べると、OptiMEM−I(Life Technologies)、8% FBS、5ng/mL 上皮増殖因子(EGF)(Sigma−Aldrich Co.,St.Louis,MO)、20μg/mL アスコルビン酸(Sigma−Aldrich)、200mg/L 塩化カルシウム(Sigma−Aldrich)、0.08% コンドロイチン硫酸(和光純薬工業株式会社、大阪市)および50μg/mLのゲンタマイシンを含有する基本培養培地を準備し、次いで、不活性化3T3線維芽細胞の培養後に馴化培地を回収した。3T3線維芽細胞の不活性化は、以前に記載されたとおりに実施した。簡単に述べると、コンフルエントな3T3線維芽細胞を4μg/mL マイトマイシンC(MMC)(協和発酵キリン株式会社、東京都)とともに、5%CO2下で37℃にて2時間インキュベートし、次いでトリプシン処理し、そして、2×104細胞/cm2の密度でプラスチック皿にプレーティングした。HCECは、5%CO2中37℃にて加湿雰囲気下で培養し、2日おきに培養培地を交換した。HCECが14~28日でコンフルエントに達すると、これらを、Ca2+およびMg2+非含有PBS中でリンスし、37℃にて5分間0.05%トリプシン−EDTAでトリプシン処理し、そして、1:2の比で継代した。
・染色等の細胞観察方法(組織学的試験):細胞観察は位相差顕微鏡にて行った。また、細胞を固定した後に機能関連マーカーとしてZO−1、Na+/K+−ATPaseを用いて免疫染色を行い蛍光顕微鏡にて観察を行った。組織染色検査のために、培養したHCECをLab−TekTM Chamber SlidesTM(NUNC A/S,Roskilde,Denmark)に入れ、4%ホルムアルデヒドで10分間室温(RT)で固定し、1%ウシ血清アルブミン(BSA)とともに30分間インキュベートした。具体的には、Lab−TekTMChamber SlidesTM(NUNC A/S,Roskilde,Denmark)上の培養HCECを室温で10分間4%ホルムアルデヒド中で固定し、1%ウシ血清アルブミン(BSA)とともに30分間インキュベートした。CECの表現型を調べるために、密着結合関連タンパク質であるZO−1(Zymed Laboratories,Inc.,South San Francisco,CA)、ポンプ機能に関連するタンパク質であるNa+/K+−ATPase(Upstate Biotec,Inc.,Lake Placid,NY)、フィブロネクチン(BD,Franklin Lakes,NJ)およびアクチンの免疫組織化学分析を行った。CECの機能に関連するマーカーとしてZO−1およびNa+/K+−ATPaseを使用し、線維芽細胞様の変化を評価するためにフィブロネクチンおよび1型コラーゲンを使用し、そして、細胞の形態を評価するためにアクチンの染色を使用した。ZO−1、Na+/K+−ATPase、1型コラーゲンおよびフィブロネクチンの染色は、それぞれ、ZO−1ポリクローナル抗体、Na+/K+−ATPaseモノクローナル抗体、およびフィブロネクチンモノクローナル抗体の1:200希釈を用いて実施した。二次抗体には、Alexa Fluor(登録商標)488標識、または、Alexa Fluor(登録商標)594標識ヤギ抗マウスIgG(Life Technologies)の1:2000希釈を使用した。アクチンの染色は、Alexa Fluor(登録商標)488標識ファロイジン(Life Technologies)の1:400希釈を用いて実施した。次いで、細胞の核をDAPI(Vector Laboratories,Inc.,Burlingame,CA)またはPI(Sigma−Aldrich)で染色した。次いで、スライドを蛍光顕微鏡(TCS SP2 AOBS;Leica Microsystems,Welzlar,Germany)で観察した。
・ウェスタンブロット法:RIPAバッファーで抽出し得られたタンパク質を7.5%ポリアクリルアミドで電気泳動した。分離されたタンパク質はPVDF膜(PALL LIFE SCIENCE社製、カタログ番号:EH−2222)に転写した。0.1%(vol/vol)ポリエチレンソルビタンモノラウレート(ナカライテスク、カタログ番号:28353−85)(TBS−T)と5%無脂肪乾燥乳(CELL SIGNALING社、カタログ番号:9999)を補ったTris緩衝化食塩水(10mMTris−HCl、pH7.4;100mMNaCl)と、ブロットした膜を1時間インキュベートすることによりブロッキング操作を行った。この後、p27(SC−527、Santa Cruz)、p21(2946、Cell Signaling)、p16(4824、Cell Signaling)、p−pRb(9308、Cell Signaling)、サイクリンD1(2926、Cell Signaling)、サイクリンD3(2936、Cell Signaling)、pp38(4631、Cell Signaling)、p−ATF2(SC−8398、Santa Cruz)、GAPDH(2118、Cell Signaling)に対する抗体を補ったTBS−Tにて1000倍に希釈したものをメンブレンに浸し、室温で1時間反応させた。T−TBSで3回洗浄後、マウス−IgG抗体HRP複合体(CELL SIGNALING社、カタログ番号:7074P2)とウサギ−IgG抗体HRP複合体(GE Healthcare、カタログ番号:NA934)インキュベートし、洗浄後、ECL−ADVAVCE(GE ヘルスケア・ジャパン社、カタログ番号:RPN2135V)で発光させたバンドを検出した。・免疫染色:コンフルエントに達した細胞をPBS(ニッスイ、カタログ番号:5913)洗浄後、氷冷したエタノール(ナカライテスク、カタログ番号:14713−95)と酢酸(WAKO カタログ番号:017−00256)(95:5)にて10分間固定した。
・Na+/K+−ATPaseに対する抗体:MILLIPORE社製(MILLIPORE カタログ番号:05−369)のものを用いた。
・ZO−1に対する抗体:マウスINVITROGEN社製(INVITROGEN カタログ番号:339100)、ウサギZYMED LABORATORIES社製(ZYMED LABORATORIES カタログ番号:61−7300)のものを用いた。
・GAPDHに対する抗体:ABCAM社製(カタログ番号:ab36840)のものを用いた。
・二次抗体(HPR結合抗ウサギIgG二次抗体)Cell Signaling Technology社製(カタログ番号:7074)
・二次抗体(抗ウサギIgG二次抗体)Cell Signaling Technology社製(カタログ番号:7076)
・サイトカイン抗体
角膜内皮細胞を10μM SB203580存在下で培養して培養上清を回収し試料液とした。Proteome Profiler(#ARY005,R&D)で培養上清中のサイトカインを網羅的に半定量した。サイトカイン抗体をブロットしたメンブレンをトレイに置き、ブロッキング液を2ml添加し、室温で1時間インキュベートした。試料液にビオチン抗体を加え、室温で1時間インキュベートした。ブロッキング液を捨て抗体溶液をメンブレンに浸して4℃で一晩インキュベートした。メンブレンを洗浄後、ブロッキング液で希釈したHRP標識ストレプトアビジン溶液を2ml加え、30分間室温でインキュベートした。メンブレンを洗浄後、基質液を加え、LAS400(フジフィルム)で検出した。
・PCR法:RT−PCR(半定量的逆転写酵素ポリメラーゼ連鎖反応)により、各ラミニン鎖およびインテグリン鎖に対するPCR法を行った。プライマーは、オリゴヌクレオチド合成会社であるINVITROGENから購入し、脱塩処理したものを用いた。細胞からの総RNAの抽出にはRNEasy Mini Kit(QIAGEN社、カタログ番号:74106)を用いた。シアトルアイバンクから購入した研究用角膜より、角膜内皮細胞を含むデスメ膜を剥離し、角膜内皮細胞を基底膜とともに機械的に剥離して、角膜内皮細胞からのRNA抽出に用いた。RNAはReverTra Ace(TOYOBO社(カタログ番号:TRT−101))により逆転写反応(42℃、60分間)を行い、TAKARA TaqHotStart Version(タカラバイオ社、カタログ番号:RR001A)によりGAPDHを内部標準としてCD166、CD73を増幅した。同量のcDNAを、PCR機(GeneAmp9700;Applied Biosystems)と、下記のプライマーペアによって増幅した。PCR反応には下記に示すプライマーを用いた。これらのプライマーはライフテクノロジーズジャパン株式会社(カタログ番号:10336022)から入手した。
・IL6−F:CACAAGCGCCTTCGGTCCAGTT(配列番号1)
・IL6−R:TCTGCCAGTGCCTCTTTGCTGC(配列番号2)
・GAPDH−F:GAGTCAACGGATTTGGTCGT(配列番号3)
・GAPDH−R:TTGATTTTGGAGGGATCTCG(配列番号4)
増幅されたDNA断片は1.5%アガロースゲル(ナカライテスク、カタログ番号:01149−76)で電気泳動し、エチジウムブロマイド(ナカライテスク、カタログ番号:14603−51)での染色により検出した。
・RT−PCRによるヒト角膜内皮細胞のIL−6発現量の定量は以下の方法で行った。
ヒト角膜内皮細胞(n=3,passage5)を10μM SB203580存在下で20日間培養後、RneasyMini(QIAGEN)でRNA抽出を行った。total RNA277ngをRevertraAce(Toyobo)で逆転写し、cDNA合成したものをテンプレートとし、PCRを行った。一本鎖cDNA合成の反応混合物1μlを含有するPCR溶液10μlを94℃
の初期温度にて1分間そして次に94℃にて1分間、54℃にて30秒間及び72℃にて30秒間、加熱した。この温度サイクルを30回反復した。
IL−6 sense primer:cacaagcgccttcggtccagtt(配列番号1)
IL−6 antisense primer:tctgccagtgcctctttgctgc(配列番号2)
・ELTSA法(BrdU):96ウェル培養プレートに、5,000個/ウェルの播種密度で播種し一晩培養した。その後、培地に5−ブロモ−2’−デオキシウリジン(BrdU)を添加し、一晩培養した。培地を除去し、固定溶液(Amersham cell proliferation biotrak ELISA system,version2)を加えて30分間室温でインキュベートした。次いで、固定溶液を除去し、ブロッキング溶液(Amersham cell proliferation biotrak ELISA system,version2)を加えて30分間、室温で静置した。次いで、ブロッキング溶液を除去し、ペルオキシダーゼ結合抗BrdU抗体を添加し、室温で90分静置した。洗浄バッファーで3回プレートを
洗浄し、TMB(3,3’,5,5’−テトラメチルベンジジン)基質(Amersham cell proliferation biotrak ELISA system,version2)を加えて5~30分間静置した。1M硫酸で反応を停止し、プレートリーダーで450nmにおける吸光度を測定した。結果は5回の測定の平均値±標準誤差として示した。
・ELISA法(IL−6):ヒト角膜内皮細胞(n=3,passage5)を10μM SB203580存在下で20日間培養後、新鮮培地に交換し、7日間後回収した培養上清中のIL−6タンパク質量をDuoSetELISA human IL−6(R &D Cat#DY206)のキットの説明書に従い、定量した。IL−6抗体(2.0μg/mL)を平底プレート(nunc)上に100μL/ウェルでリン酸緩衝食塩水(PBS)中で室温で一晩被覆した。プレートをPBS、0.05%(v/v)Tween20(PBS/Tween)で洗浄し、そして1%の血清アルブミン(ナカライテスク)を補足したPBS/Tween(PTG)で2時間ブロッキングした。培養上清0.1mlを加え、室温で2時間インキュベーションした。洗浄後、ビオチン処理された抗IL−6抗体を加え、2時間、室温でインキュベートした。洗浄後、西洋ワサビペルオキシダーゼ結合ストレプトアビジンを加え、20分インキュベーションした。プレートを洗浄し、そして結合したペルオキシダーゼをsubstrate solution(R &D Systems Cat#DY999)で検出した。呈色反応を2M H2SO4で止め、そしてプレートをMultimax(Promega)で450nMで読み取った。
本実施例では、p38MAPキナーゼシグナル阻害はサイクリン依存性キナーゼ阻害因子を抑制し角膜内皮細胞の細胞周期を移行させることを示す。
本実施例では、p38MAPキナーゼ阻害薬による角膜内皮細胞の細胞増殖の促進を実証
した。
本実施例では、ウサギの部分的角膜内皮障害モデルを用いてp38MAPキナーゼシグナル阻害が生体において角膜内皮の細胞増殖を促進するかどうかについて検討を行った。
本実施例では、p38MAPキナーゼシグナル阻害は培養環境で生じる細胞の肥大化による細胞密度低下を抑制することを示す。
本実施例では、p38MAPキナーゼシグナル阻害はポンプ機能およびバリア機能を維持して培養による細胞密度低下を阻害するかどうかを確認した。培養したヒト角膜内皮細胞細胞をp38MAPキナーゼ阻害薬であるSB203580を用いて各種濃度で刺激して20日後に、角膜内皮細胞の機能であるポンプ機能、バリア機能についてそれぞれのマーカーとしてNa+/K+−ATPaseおよびZO−1による免疫染色を行った。
本実施例では、p38MAPキナーゼシグナル阻害は角膜内皮細胞が産生するサイトカインを抑制するかどうかを確認した。
本実施例では、p38MAPキナーゼ阻害薬は角膜内皮の細胞死を抑制するかどうかを検討した。
p38MAPキナーゼシグナル阻害の細胞死への影響を検討するために、培養したヒト角膜内皮細胞を100J/m2の紫外線(UV)にて刺激して細胞死を誘導しSB203580(10μMで用いた。)の効果を検討した。検討は細胞数を計数することで行った。
本実施例では、p38MAPキナーゼシグナル阻害が角膜内皮のUV刺激時のアポトーシスを抑制するかについて検討した。UV照射によるアポトーシスの実行分子であるカスパーゼ3およびPARPの切断による活性化が抑制されるかどうか、およびUV照射によるDNAの二本鎖切断により誘導されるリン酸化ヒストンH2AXの発現が抑制されるかどうかを、本明細書に上述した実験手法に従ってウェスタンブロットで確認した。ウェスタンブロットには、以下の抗体を用いた:抗カスパーゼ3抗体(9662、Cell Signaling)、抗PARP抗体(9542、Cell Signaling)、抗H2AX抗体(05−636、Millipore)、抗GAPDH抗体(2118、Cell Signaling)の条件は以下を用いた:100J/m2。p38MAPキナーゼシグナル阻害薬としては、SB203580を用い、その濃度は、10μMであった。
本実施例では、種々のp38MAPK阻害剤での増殖の促進を実証し、本発明の効果が特定のp38MAPK阻害剤に限局されるのではなく、p38MAPK阻害剤全般にみられる効果であることを実証した。本実施例では、いずれも、p38MAPKに特異的に阻害作用を有するとされている試薬を用いて、本発明の効果が、他のキナーゼの阻害に起因するのではなく、p38MAPKの阻害に起因することを実証した。
使用した薬剤は以下のとおりである。
(1)SB203580(4−(4−フルオロフェニル)−2−(4−メチルスルフィニルフェニル)−5−(4−ピリジル)−1H−イミダゾール)(Cayman、カタログ番号:13067):SB203580は、MAPKの特異的(選択的)阻害剤であることが知られている(Biochem Biophys Res Commun.1999 Oct 5;263(3):825−31.)。したがって、SB203580での実験結果は、MAPKの阻害によるものと特定することができる。
(2)Semapimod(N,N’−ビス[3,5−ビス[1−[2−(アミノイミノメチル)ヒドラゾノ]エチル]フェニル]デカンジアミド)(CNI−1493;MedKoo Biosciences、カタログ番号:202590):Semapimodは、MAPKの良好な阻害剤であることが知られている(Gastroenterology.2002 Jan;122(1):7−14.;Transplant Proc.1998 Mar;30(2):409−10.;Auton Neurosci.2000 Dec 20;85(1−3):141−7.;Gastroenterology.2009 Feb;136(2):619−29.doi:10.1053/j.gastro.2008.10.017.Epub 2008 Oct 9.)。
(3)BIRB796(Doramapimod;N−[3−tert−ブチル−1−(4−メチルフェニル)ピラゾール−5−イル]−N’−[4−(2−モルホリノエトキシ)−1−ナフチル]ウレア)(Selleck Chemicals、カタログ番号:S1574):BIRB796は、MAPKの特異的(選択的)阻害剤であることが知られている(Nat Struct Biol.2002 Apr;9(4):268−72.)。したがって、BIRB796での実験結果は、MAPKの阻害によるものと特定することができる。
(4)PH−797804(3−(3−ブロモ−4−((2,4−ジフルオロベンジル)オキシ)−6−メチル−2−オキソピリジン−1(2H)−イル)−N,4−ジメチルベンズアミド)(Selleck Chemicals、カタログ番号:S2726):PH−797804はMAPKの特異的(選択的)阻害剤であることが知られている(Bioorg Med Chem Lett.2011 Jul 1;21(13):4066−71.doi:10.1016/j.bmcl.2011.04.121.Epub 2011 May 11.)。したがって、PH−797804での実験結果は、MAPKの阻害によるものと特定することができる。
(5)VX−702(1−(カルバモイル−6−(2,4−ジフルオロフェニル)ピリジン−2−イル)−1−(2,6−ジフルオロフェニル)尿素)(Selleck Chemicals、カタログ番号:S6005):VX−702は、MAPKの特異的(選択的)阻害剤であることが知られている(Curr Opin Investig Drugs.2006 Nov;7(11):1020−5.)。したがって、VX−702での実験結果は、MAPKの阻害によるものと特定することができる。
(6)LY2228820(ラリメチニブ(ralimetinib);5−(2−(tert−ブチル)−5−(4−フルオロフェニル)−1H−イミダゾール−4−イル)−3−ネオペンチル−3H−イミダゾ[4,5−b]ピリジン−2−アミン)(Selleck Chemicals、カタログ番号:S1494):LY2228820は、MAPKの強力な特異的(選択的)阻害剤であることが知られている(Br J Haematol.2008 May;141(5):598−606.doi:10.1111/j.1365−2141.2008.07044.x.Epub 2008 Apr 7.;Mol Cancer Ther.2014 Feb;13(2):364−74.doi:10.1158/1535−7163.MCT−13−0513.Epub 2013 Dec 19.;Biol Chem.2013 Mar 1;288(9):6743−53.doi:10.1074/jbc.M112.425553.Epub 2013 Jan 18.)。したがって、LY2228820での実験結果は、MAPKの阻害によるものと特定することができる。
(7)TAK−715(2−ベンズアミド−4−[2−エチル−4−(3−メチルフェニル)チアゾール−5−イル]ピリジン)(Selleck Chemicals、カタログ番号:S2928):TAK−715は、MAPKの強力な特異的(選択的)阻害剤であることが知られている(J Med Chem.2005 Sep 22;48(19):5966−79.)。したがって、TAK−715での実験結果は、MAPKの阻害によるものと特定することができる。
カニクイザルの角膜内皮細胞(日精バイリス)を培養中の培養皿から培地を除去し、事前に37℃に温めておいたリン酸緩衝液(ナカライテスク、14249−95)を添加し、洗浄を行った。この作業を2回繰り返した。リン酸緩衝液除去後、0.05%Trypsin−EDTA(ナカライテスク、35554−64)を添加し、37℃(5% CO2)で10分インキュベートした。その後、DMEM(ナカライテスク、08456−94)+10%FBS(Biowest、S1820−500)+1%ペニシリン/ストレプトマイシン(P/S、ナカライテスク、26252−94)で懸濁し、1200rpmで3分間遠心することで細胞を回収した。
96ウェルプレートはFNC coating mix(50ml(AES−0407)、ATHENA、カタログ番号:0407)で処理した。コーティングした96ウェルプレートにサル角膜内皮細胞(ロット:20120404−3L−P8)を1ウェル当たり5000個の割合で播種し、37℃(5% CO2)で30時間培養した。30時間後、培地を除去し、無血清培地:DMEM+1%P/Sに変更し、18時間培養した。18時間後、DMEM+10%FBS+1%P/Sの培地にDMSOで溶解した最終濃度0.3、1、3、10、30、100μmol/lとなるようにSB203580(Cayman、カタログ番号:13067)を添加して24時間培養した。コントロールはDMSOを添加した。さらに24時間後、DMEM+10%FBS+1%P/Sの培地にBrdU labeling reagent(Amersham Cell Proliferation Biotrak ELISA System,Version2、GE Healthbare、カタログ番号:RPN250)を1:1000の割合で添加し、最終濃度0.3、1、3、10、30、100μmol/lとなるようにSB203580を添加して24時間培養した。コントロールはDMSOを添加した。24時間後、Amersham Cell Proliferation Biotrak ELISA System,Version2(GE Healthbare、カタログ番号:RPN250)にてBrdU ELISAを実施し、450nmの吸光度を測定した。*P<0.01,Dunnet検定 n=5。
(1)と同様に、カニクイザルの角膜内皮細胞を培養中の培養皿から培地を除去し、事前に37℃に温めておいたリン酸緩衝液を添加し、洗浄を行った。この作業を2回繰り返した。リン酸緩衝液除去後、0.05% Trypsin−EDTA(ナカライテスク、35554−64)を添加し、37℃(5% CO2)で10分インキュベートした。その後、DMEM(ナカライテスク、08456−94)+10%FBS(Biowest、S1820−500)+1%ペニシリン/ストレプトマイシン(ナカライテスク、カタログ番号:26252−94)で懸濁し、1200rpmで3分間遠心することで細胞を回収した。
96ウェルプレートはFNC coating mix(50ml(AES−0407)、ATHENA、カタログ番号:0407)で処理した。コーティングした96ウェルプレートにサル角膜内皮細胞(ロット:20120404−3L−P8)を1ウェル当たり5000個の割合で播種し、37℃(5% CO2)で30時間培養した。30時間後、培地を除去し、無血清培地:DMEM+1%P/Sに変更し、18時間培養した。18時間後、DMEM+10%FBS+1%P/Sの培地にDMSOで溶解した最終濃度0.1、0.3、1、3、10μmol/lとなるようにSemapimod HCl(MedKoo Biosciences、カタログ番号:202590、ロット番号:SMC20120918)を添加して24時間培養した。コントロールはDMSOを添加した。さらに24時間後、DMEM+10%FBS+1%P/Sの培地にBrdU labeling reagent(Amersham Cell Proliferation Biotrak ELISA System,Version2、GE Healthbare、カタログ番号:RPN250)を1:1000の割合で添加し、最終濃度0.1、0.3、1、3、10μmol/lとなるようにSemapimod HClを添加して24時間培養した。コントロールはDMSOを添加した。24時間後、Amersham Cell Proliferation Biotrak ELISA System,Version2(GE Healthbare、カタログ番号:RPN250)にてBrdU ELISAを実施し、450nmの吸光度を測定した。
(1)と同様に、カニクイザルの角膜内皮細胞を培養中の培養皿から培地を除去し、事前に37℃に温めておいたPBS(−)を添加し、洗浄を行った。この作業を2回繰り返した。PBS(−)除去後、0.05% Trypsin−EDTA(ナカライテスク、35554−64)を添加し、37℃(5% CO2)で10分インキュベートした。その後、DMEM(ナカライテスク、08456−94)+10%FBS(Biowest、S1820−500)+1%ペニシリン/ストレプトマイシン(ナカライテスク、カタログ番号:26252−94)で懸濁し、1200rpmで3分間遠心することで細胞を回収した。
96ウェルプレートはFNC coating mix(50ml(AES−0407)、ATHENA、カタログ番号:0407)で処理した。コーティングした96ウェルプレートにサル角膜内皮細胞(ロット:20120404−3L−P9)を1ウェル当たり5000個の割合で播種し、37℃(5% CO2)で30時間培養した。30時間後、培地を除去し、無血清培地:DMEM+1%P/Sに変更し、18時間培養した。18時間後、DMEM+10%FBS+1%P/Sの培地にDMSOで溶解した最終濃度0.1、0.3、1、3、10、30、100μmol/lとなるようにBIRB796(Doramapimod)(Selleck Chemicals、カタログ番号:S1574、ロット番号:S157402)を添加して24時間培養した。コントロールはDMSOを添加した。さらに24時間後、DMEM+10%FBS+1%P/Sの培地にBrdU labeling reagent(Amersham Cell Proliferation Biotrak ELISA System,Version2、GE Healthbare、カタログ番号:RPN250)を1:1000の割合で添加し、最終濃度0.1、0.3、1、3、10、30、100μmol/lとなるようにBIRB796(Doramapimod)を添加して24時間培養した。コントロールはDMSOを添加した。24時間後、Amersham Cell Proliferation Biotrak ELISA System,Version2(GE Healthbare、カタログ番号:RPN250)にてBrdU ELISAを実施し、450nmの吸光度を測定した。
(1)と同様に、カニクイザルの角膜内皮細胞を培養中の培養皿から培地を除去し、事前に37℃に温めておいたPBS(−)を添加し、洗浄を行った。この作業を2回繰り返した。PBS(−)除去後、0.05% Trypsin−EDTA(ナカライテスク、35554−64)を添加し、37℃(5% CO2)で10分インキュベートした。その後、DMEM(ナカライテスク、08456−94)+10%FBS(Biowest、S1820−500)+1%ペニシリン/ストレプトマイシン(ナカライテスク、カタログ番号:26252−94)で懸濁し、1200rpmで3分間遠心することで細胞を回収した。
96ウェルプレートはFNC coating mix(50ml(AES−0407)、ATHENA、カタログ番号:0407)で処理した。コーティングした96ウェルプレートにサル角膜内皮細胞(ロット:20120404−3L−P9)を1ウェル当たり5000個の割合で播種し、37℃(5% CO2)で30時間培養した。30時間後、培地を除去し、無血清培地:DMEM+1%P/Sに変更し、18時間培養した。18時間後、DMEM+10%FBS+1%P/Sの培地にDMSOで溶解した最終濃度0.1、0.3、1、3、10、30μmol/lとなるようにPH−797804(Selleck Chemicals、カタログ番号:S2726、ロット番号:01)を添加して24時間培養した。コントロールはDMSOを添加した。さらに24時間後、DMEM+10%FBS+1%P/Sの培地にBrdU labeling reagent(Amersham Cell Proliferation Biotrak ELISA System,Version2、GE Healthbare、カタログ番号:RPN250)を1:1000の割合で添加し、最終濃度0.1、0.3、1、3、10、30μmol/lとなるようにPH−797804を24時間培養した。コントロールはDMSOを添加した。24時間後、Amersham Cell Proliferation Biotrak ELISA System,Version2(GE Healthbare、カタログ番号:RPN250)にてBrdU ELISAを実施し、450nmの吸光度を測定した。
(1)と同様に、カニクイザルの角膜内皮細胞を培養中の培養皿から培地を除去し、事前に37℃に温めておいたPBS(−)を添加し、洗浄を行った。この作業を2回繰り返した。PBS(−)除去後、0.05% Trypsin−EDTA(ナカライテスク、35554−64)を添加し、37℃(5% CO2)で10分インキュベートした。その後、DMEM(ナカライテスク、08456−94)+10%FBS(Biowest、S1820−500)+1%ペニシリン/ストレプトマイシン(ナカライテスク、カタログ番号:26252−94)で懸濁し、1200rpmで3分間遠心することで細胞を回収した。
96ウェルプレートはFNC coating mix(50ml(AES−0407)、ATHENA、カタログ番号:0407)で処理した。コーティングした96ウェルプレートにサル角膜内皮細胞(ロット:20120404−3L−P9)を1ウェル当たり5000個の割合で播種し、37℃(5% CO2)で30時間培養した。30時間後、培地を除去し、無血清培地:DMEM+1%P/Sに変更し、18時間培養した。18時間後、DMEM+10%FBS+1%P/Sの培地にDMSOで溶解した最終濃度0.1、0.3、1、3、10、30、100μmol/lとなるようにVX−702(Selleck Chemicals、カタログ番号:S6005、ロット番号:02)を添加して24時間培養した。コントロールはDMSOを添加した。さらに24時間後、DMEM+10%FBS+1%P/Sの培地にBrdU labeling reagent(Amersham Cell Proliferation Biotrak ELISA System,Version2、GE Healthbare、カタログ番号:RPN250)を1:1000の割合で添加し、最終濃度0.1、0.3、1、3、10、30、100μmol/lとなるようにVX−702を添加して24時間培養した。コントロールはDMSOを添加した。24時間後、Amersham Cell Proliferation Biotrak ELISA System,Version2(GE Healthbare、カタログ番号:RPN250)にてBrdU ELISAを実施し、450nmの吸光度を測定した。
(1)と同様に、カニクイザルの角膜内皮細胞を培養中の培養皿から培地を除去し、事前に37℃に温めておいたPBS(−)を添加し、洗浄を行った。この作業を2回繰り返した。PBS(−)除去後、0.05% Trypsin−EDTA(ナカライテスク、35554−64)を添加し、37℃(5% CO2)で10分インキュベートした。その後、DMEM(ナカライテスク、08456−94)+10%FBS(Biowest、S1820−500)+1%ペニシリン/ストレプトマイシン(ナカライテスク、カタログ番号:26252−94)で懸濁し、1200rpmで3分間遠心することで細胞を回収した。
96ウェルプレートはFNC coating mix(50ml(AES−0407)、ATHENA、カタログ番号:0407)で処理した。コーティングした96ウェルプレートにサル角膜内皮細胞(ロット:20120404−3L−P9)を1ウェル当たり5000個の割合で播種し、37℃(5% CO2)で30時間培養した。30時間後、培地を除去し、無血清培地:DMEM+1%P/Sに変更し、18時間培養した。18時間後、DMEM+10%FBS+1%P/Sの培地にDMSOで溶解した最終濃度0.1、0.3、1、3、10、30μmol/lとなるようにLY2228820(Selleck Chemicals、カタログ番号:S1494、ロット番号:01)を添加して24時間培養した。コントロールはDMSOを添加した。さらに24時間後、DMEM+10%FBS+1%P/Sの培地にBrdU labeling reagent(Amersham Cell Proliferation Biotrak ELISA System,Version2、GE Healthbare、カタログ番号:RPN250)を1:1000の割合で添加し、最終濃度0.1、0.3、1、3、10、30μmol/lとなるようにLY2228820を添加して24時間培養した。コントロールはDMSOを添加した。24時間後、Amersham Cell Proliferation Biotrak ELISA System,Version2(GE Healthbare、カタログ番号:RPN250)にてBrdU ELISAを実施し、450nmの吸光度を測定した。
(1)と同様に、カニクイザルの角膜内皮細胞を培養中の培養皿から培地を除去し、事前に37℃に温めておいたPBS(−)を添加し、洗浄を行った。この作業を2回繰り返した。PBS(−)除去後、0.05% Trypsin−EDTA(ナカライテスク、35554−64)を添加し、37℃(5% CO2)で10分インキュベートした。その後、DMEM(ナカライテスク、08456−94)+10%FBS(Biowest、S1820−500)+1%ペニシン/ストレプトマイシン(ナカライテスク、カタログ番号:26252−94)で懸濁し、1200rpmで3分間遠心することで細胞を回収した。
96ウェルプレートはFNC coating mix(50ml(AES−0407)、ATHENA、カタログ番号:0407)で処理した。コーティングした96ウェルプレートにサル角膜内皮細胞(ロット:20120404−3L−P9)を1ウェル当たり5000個の割合で播種し、37℃(5% CO2)で30時間培養した。30時間後、培地を除去し、無血清培地:DMEM+1%P/Sに変更し、18時間培養した。18時間後、DMEM+10%FBS+1%P/Sの培地にDMSOで溶解した最終濃度0.1、0.3、1、3、10、100μmol/lとなるようにTAK−715(Selleck Chemicals、カタログ番号:S2928、ロット番号:01)を添加して24時間培養した。コントロールはDMSOを添加した。さらに24時間後、DMEM+10%FBS+1%P/Sの培地にBrdU labeling reagent(Amersham Cell Proliferation Biotrak ELISA System,Version2、GE Healthbare、カタログ番号:RPN250)を1:1000の割合で添加し、最終濃度0.1、0.3、1、3、10、100μmol/lとなるようにTAK−715を添加して24時間培養した。コントロールはDMSOを添加した。24時間後、Amersham Cell Proliferation Biotrak ELISA System,Version2(GE Healthbare、カタログ番号:RPN250)にてBrdU ELISAを実施し、450nmの吸光度を測定した。
本実施例では、サルのみならずヒトでも、種々のp38MAPK阻害剤での増殖の促進がみられることを実証し、本発明の効果が特定の動物種に限局されるのではなく、ヒトを含む広い動物種にみられる効果であることを実証した。本実施例では、いずれも、実施例8で用いた試薬を用いた。
カニクイザルの角膜内皮細胞を培養中の培養皿から培地を除去し、事前に37℃に温めておいたPBS(−)を添加し、洗浄を行った。この作業を2回繰り返した。PBS(−)除去後、0.05% Trypsin−EDTA(ナカライテスク、35554−64)を添加し、37℃(5% CO2)で10分インキュベートした。その後、DMEM(ナカライテスク、08456−94)+10%FBS(Biowest、S1820−500)+1%ペニシリン/ストレプトマイシン(ナカライテスク、カタログ番号:26252−94)で懸濁し、1200rpmで3分間遠心することで細胞を回収した。
ヒト角膜内皮細胞を培養中の培養皿から培地を除去し、事前に37℃に温めておいたPBS(−)を添加し、洗浄を行った。この作業を2回繰り返した。PBS(−)除去後、TrypLE Select(×10)(GIBCO、A12177−01)を添加し、37℃(5% CO2)で10分インキュベートした。その後、Opti−MEM(GIBCO、31985−070)で懸濁し、1200rpmで3分間遠心することで細胞を回収した。
本実施例では、p38MAPKの活性化がアポトーシスを誘導することを実証した。
(材料および方法)
培養サル角膜内皮細胞をFNC Coating Mixをコートした12well plateに1×105個播種し、37℃で5%CO2の条件下にてコンフルエントに到達するまで約5日間培養した。使用した培地はDulbecco’s Modified Eagle Medium(Gibco,12320−032)、10% FBS,1% Penicillin−Streptomycin(nacalai tesque,26252−94)であった。
次に、馴化処理としてZ−VAD(OMe)−FMK (和光純薬工業(株),269−02071)を10μMの濃度で添加し37℃で5%CO2の条件下にて16時間インキュベートした。なお、Control群、anisomysin群には試薬の溶媒であるジメチルスルホキシド(DMSO)(Dimethyl Sulfoxide,Sterile−filtered;nacalai tesque,13408−64)を添加した。使用した培地はGibco DMEM,1% P/Sであった。その後、細胞上澄を除去し、anisomysin群、anisomysin+Z−VAD−FMK群にアニソマイシン(anisomysin;和光純薬工業(株),017−16861)を10μMの濃度で添加した。anisomysin+Z−VAD−FMK群には、アニソマイシンと共に10μMのZ−VADを添加した。Z−VAD−FMKを添加しない群に関してはDMSOを添加した。その後、9時間まで培養を行った。位相差顕微鏡下で細胞形態を観察した。9時間後の写真を撮影した。
9時間後、細胞のタンパクを回収し、タンパクの発現量の比較をwestern Blot法により行った。抗体は抗Caspase3抗体(cell signaling,9662S)、抗p38MAPK抗体(cell signaling,#9212)、抗pp38MAPK抗体(cell signaling,#4631S)を使用した。また内部標準として抗GAPDH抗体(MBL,3H12)を使用した。
結果を図20に示す。p38の活性化作用を有するアニソマイシンによりp38のリン酸化を認め、さらにカスパーゼ3の切断による活性化を認める。カスパーゼ3の活性化はカスパーゼ阻害剤であるZ−VAD−FMKにより抑制された。以上よりp38の活性化はアポトーシスを引き起こすことが示された。p38MAPKの活性化が角膜内皮のアポトーシスを誘導することを実証されたため、この事実からも、本発明のp38MAPK阻害剤が、角膜内皮の細胞増殖促進または細胞障害抑制を生じさせ、角膜内皮治療薬として用いられることが実証された。
2頭カニクイザル(滋賀医科大学より購入)の両眼に直径7mmのステンレス製の棒を液体窒素で冷却した後に、角膜に接触させて、角膜内皮を約直径7mm脱落させて、部分的障害モデルを作製した。
その後、右眼にはSB203580 (3mM)を50μl、1日4回点眼した。同様に左眼にはコントロールとして基剤であるリン酸緩衝液を点眼した。
このようにしてサルモデルを作製し、以下の実験に用いた。
本実施例では、SB203580点眼が霊長類の角膜内皮の増殖を促進することを実証した。
(免疫染色による発現観察)
免疫染色によりSB203580点眼後に細胞増殖に関連するKi−67の発現が亢進されていることを確認した。免疫染色の手法は、上記調製例2に準じ、抗体については、Ki−67に対する抗体に変更して実験を行った。
組織染色検査のために、培養した細胞を4%ホルムアルデヒドで10分間室温(RT)で固定し、1%ウシ血清アルブミン(BSA)とともに60分間インキュベートした。Ki−67に対する抗体を1:200希釈を用いて実施した。二次抗体には、Alexa Fluor(登録商標)488標識ヤギ抗マウスIgG(Life Technologies)の1:1000希釈を使用した。次いで、細胞の核をDAPI(Cell stain DAPI Solution;Dojindo,Kumamoto,Japan)で染色した。次いで、スライドを蛍光顕微鏡(オールインワン蛍光顕微鏡;KEYENCE,Osaka,JAPAN)で観察した。
右眼、左眼それぞれ5視野ずつ写真撮影を行い、Ki67の陽性細胞率について解析した。
結果を図21および図22に示す。
図21は、SB203580点眼は霊長類の角膜内皮の増殖を促進することを示す写真である。図22は、SB203580点眼は霊長類の角膜内皮の増殖を促進することを示す計数結果である。示されるように、SB203580を点眼した眼ではKi67の陽性細胞を多く認めた。また、図23に示されるように、Ki67の陽性細胞率について解析したところ、SB203580を点眼した眼ではKi67の陽性細胞を有意に多く認めた。2頭のサルともに同じ傾向であることを確認した。これらの結果より、霊長類一般においてもp38MAPK阻害剤は点眼薬などとして投与することで角膜内皮に作用し、角膜内皮細胞の増殖を促進することが示された。
培養サル角膜内皮細胞のアポトーシスに対するp38MAPK阻害薬の効果の検討
培養サル角膜内皮細胞をFNC Coating Mixをコートした12wellplateに1×105個播種し、37℃で5%CO2の条件下にてコンフルエントに到達するまで約5日間培養した。
培地:Dulbecco’s Modified Eagle Medium(DMEM、Gibco,12320−032),10%FBS,1% Penicillin−Streptomycin(nacalai tesque,26252−94)
その後、細胞上澄を除去し、細胞にUV(100J/m2)を照射した。照射後、各阻害剤入りの培地を再度細胞に添加し、9時間培養を行った。位相差顕微鏡下で細胞形態及びアポトーシスを観察した。
結果を図23に示す。いずれのp38MAPK阻害薬についても示されるように、p38MAPK阻害薬は培養角膜内皮細胞の細胞死を抑制することが示された。
九時間培養後の細胞をMEBCYTO−Apoptosis Kit(Annexin V−FITC Kit)(メーカー:MBL,Code:4700)を用い、37℃で20分間染色した。その後、95%酢酸エタノールで10分間固定した。固定後、DAPI Solution(メーカー:DOJINDO,Code:GA098)で30分間染色し、共焦点顕微鏡で観察した。
結果を図24に示す。いずれのp38MAPK阻害薬についても示されるように、p38MAPK阻害薬は培養角膜内皮細胞の細胞死を抑制することが示された。
次に、本実施例では、p38MAPK阻害薬は角膜内皮のアポトーシスを抑制することを実証した。
安楽死後0−24時間のウサギ眼球を実験に用いた.実体顕微鏡下で角膜輪部に沿ってスプリング剪刃を用いて強膜を切除し,水晶体,虹彩を取り除き強角膜片を作製した。強角膜片を4分割し、Control群およびSB203580類似薬添加群とした。角膜の分割後、Control群はDMSOを添加したOptisol−GS(登録商標)(Bausch&Lomb)(Lot.W0006098)、SB203580類似薬添加群では各試薬を添加したOptisol−GS(登録商標)にて2時間のpretreatmentを遮光下にて行った。PBS(−)にて角膜を2回洗浄後、角膜内皮細胞にUV100J/m2を照射し、再び遮光下にて24時間4℃で保存した。保存液にはControl群にはDMSO、各SB203580類似薬添加群には各試薬を添加したOptisol−GS(登録商標)を用いた。強角膜片をPBS(−)で洗浄し,MEBCYTO−Apoptosis kit(Annexin V−FITC kit)(MBL)(Lot.027FA)を用いAnnexin VおよびDAPIの染色した.その後−30℃に氷冷した95%エタノールに30分浸し固定した.エタノール成分を除去するため,5分毎にPBS(−)を交換し,3回洗浄した.その後退色防止剤を加え封入した、共焦点顕微鏡でAnnexin Vおよび核の観察を蛍光観察により行った.
Anneexin Vおよび核を観察した蛍光観察結果を図25に示す。いずれのp38MAPK阻害薬についても示されるように、p38MAPK阻害薬は角膜内皮のアポトーシスを抑制することが示された。また、Anneexin V陽性細胞率を計測した結果を図26に示す。UVを照射したコントロールと比較して全てのp38MAPK阻害剤により有意にAnneexin V陽性細胞率が減少した。以上から、p38MAPK阻害薬は角膜内皮のアポトーシスを抑制する効果を有することが実証された。
本実施例では、p38MAPキナーゼ阻害薬であるSB203580を用いて、前房内投与、結膜下注射、徐放剤に薬剤を含有させて前房内、結膜下注射などが可能であるか確認する。これらは以下のとおりのプロトコルで行う。
投与する薬剤の調製例:
生理的食塩水や精製水などに薬剤(例えば、SB203580)を希釈して調製する。
投与する薬剤の調製例:
生理的食塩水や精製水などに薬剤(例えば、SB203580)を希釈して調製する。
ゼラチン、ポリ乳酸などの担体を用いた徐放剤に薬剤(例えば、SB203580)を含浸させて前房内に注入する。
ゼラチン、ポリ乳酸などの担体を用いた徐放剤に薬剤(例えば、SB203580)を含浸させて結膜下に注入する。
各濃度の被験物質の組成を以下に示す。
塩化ナトリウム 0.85g
リン酸二水素ナトリウム二水和物 0.1g
ベンザルコニウム塩化物 0.005g
水酸化ナトリウム 適量
精製水 適量
全量100mg(pH7.0)。
リン酸二水素ナトリウム二水和物 0.1g
ベンザルコニウム塩化物 0.005g
水酸化ナトリウム 適量
精製水 適量
全量100mg(pH7.0)。
配列番号2:IL6−R:TCTGCCAGTGCCTCTTTGCTGC
配列番号3:GAPDH−F:GAGTCAACGGATTTGGTCGT
配列番号4:GAPDH−R:TTGATTTTGGAGGGATCTCG
Claims (8)
- p38MAPキナーゼ阻害薬を含む、細胞増殖、細胞障害抑制または細胞老化抑制を必要とする角膜内皮疾患、障害または状態の治療または予防薬。
- 前記角膜内皮障害は、フックス角膜内皮ジストロフィ、角膜移植後の持続する角膜内皮密度減少、外傷、眼科手術、加齢、および角膜内皮炎に関連する障害からなる群より選択される少なくとも1つである、請求項1に記載の治療または予防薬。
- 前記p38MAPキナーゼ阻害薬は水溶性である、請求項1に記載の治療または予防薬。
- 前記p38MAPキナーゼ阻害薬は、4−(4−フルオロフェニル)−2−(4−ヒドロキシフェニル)−5−(4−ピリジル)−1H−イミダゾール(SB−202190)、trans−4−[4−(4−フルオロフェニル)−5−(2−メトキシ−4−ピリミジニル)−1H−イミダゾール−1−イル]シクロヘキサノール(SB−239063)、4−(4−フルオロフェニル)−2−(4−メチルスルフィニルフェニル)−5−(4−ピリジル)−1H−イミダゾール(SB−203580)、4−(4−フルオロフェニル)−5−(2−メトキシピリミジン−4−イル)−1−(ピペリジン−4−イル)イミダゾール(SB−242235)、4−(4−フルオロフェニル)−2−(4−ヒドロキシ−1−ブチニル)−1−(3−フェニルプロピル)−5−(4−ピリジル)イミダゾール(RWJ−67657)、4−(4−フルオロフェニル)−1−(ピペリジン−4−イル)−5−(4−ピリジル)イミダゾール(HEP−689)、(S)−2−(2−アミノ−3−フェニルプロピルアミノ)−1−メチル−5−(2−ナフチル)−4−(4−ピリジル)ピリミジン−6−オン(AMG−548)、2−クロロ−4−(4−フルオロ−2−メチルアニリノ)−2’−メチルベンゾフェノン(EO−1606)、3−(4−クロロフェニル)−5−(1−ヒドロキシアセチルピペリジン−4−イル)−4−(ピリミジン−4−イル)ピラゾール(SD−06)、5−(2,6−ジクロロフェニル)−2−(2,4−ジフルオロフェニルチオ)ピリミド[3,4−b]ピリダジン−6−オン(VX−745)、4−アセチルアミノ−N−tert−ブチルベンズアミド(CPI−1189)、N−[3−tert−ブチル−1−(4−メチルフェニル)ピラゾール−5−イル]−N’−[4−(2−モルホリノエトキシ)−1−ナフチル]ウレア(ドラマピモド(Doramapimod(BIRB796)))、2−ベンズアミド−4−[2−エチル−4−(3−メチルフェニル)チアゾール−5−イル]ピリジン(TAK−715)、タルマピモド(Talmapimod;SCIO−469)、1−(カルバモイル−6−(2,4−ジフルオロフェニル)ピリジン−2−イル)−1−(2,6−ジフルオロフェニル)尿素(VX−702;2−(2,4−ジフルオロフェニル)−6−(1−(2,6−ジフルオロフェニル)ウレイド)ニコチンアミド)、ジルマピモド(dilmapimod;GSK−681323)、4−(5−(シクロプロピルカルバモイル)−2−メチルフェニルアミノ)−5−メチル−N−プロピルピロロ(1,2−f)(1,2,4)トリアジン−6−カルボキサミド(PS−540446)、抗FGF−7抗体(SC−80036)、AVE−9940、[5−アミノ−1−(4−フルオロフェニル)−1H−ピラゾル−4−イル][3−(3−アミノ−2−ヒドロキシプロポキシ)フェニル]メタノン(RO−320−1195)、1−(1,3−ジヒドロキシプロプ−2−イル)−4−(4−フルオロフェニル)−5−[2−フェノキシピリミジン−4−イル]イミダゾール(SB−281832)、2−[5−({4−[(4−フルオロフェニル)メチル]ピペリジン−1−イル}カルボニル)−6−メトキシ−1−メチル−1H−インドル−3−イル]−N,N’−ジメチル−2−オキソアセトアミド(SCIO−323)、2−(5−tert−ブチル−2−m−トリル−2H−ピラゾル−3−イル)−2−ヒドロキシイミド−N−[4−(2−モルホリン−4−イル−エトキシ)−ナフタレン−1−イル]−アセトアミド(KC−706)、N,N’−ビス[3,5−ビス[1−(2−アミジノヒドラゾノ)エチル]フェニル]デカンジアミド、N,N’−ビス[3,5−ビス[1−[2−(アミノイミノメチル)ヒドラゾノ]エチル]フェニル]デカンジアミド(セマピモド(Semapimod))、および3−(3−ブロモ−4−((2,4−ジフルオロベンジル)オキシ)−6−メチル−2−オキソピリジン−1(2H)−イル)−N,4−ジメチルベンズアミド(PH−797804)、および5−(2−(tert−ブチル)−5−(4−フルオロフェニル)−1H−イミダゾール−4−イル)−3−ネオペンチル−3H−イミダゾ[4,5−b]ピリジン−2−アミン(LY2228820)からなる群より選択される少なくとも1つを含む、請求項1に記載の治療または予防薬。
- 前記p38MAPキナーゼ阻害薬は4−[4−(4−フルオロフェニル)−2−(4−メチルスルフィニルフェニル)−1H−イミダゾール−5−イル]ピリジン)(SB203580)またはその塩を含む、請求項1に記載の治療または予防薬。
- 前記p38MAPキナーゼ阻害薬は4−[4−(4−フルオロフェニル)−2−(4−メチルスルフィニルフェニル)−1H−イミダゾール−5−イル]ピリジン)(SB203580)塩酸塩を含む、請求項1に記載の治療または予防薬。
- 細胞増殖を必要とする角膜内皮障害の治療または予防のためのp38MAPキナーゼ阻害物質。
- p38MAPキナーゼ阻害薬の有効量をそれを必要な被験体に投与する工程を含む、細胞増殖を必要とする角膜内皮障害の治療または予防のための方法。
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