WO2005037316A1 - セクレターゼ活性を抑制する方法 - Google Patents
セクレターゼ活性を抑制する方法 Download PDFInfo
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- WO2005037316A1 WO2005037316A1 PCT/JP2004/015950 JP2004015950W WO2005037316A1 WO 2005037316 A1 WO2005037316 A1 WO 2005037316A1 JP 2004015950 W JP2004015950 W JP 2004015950W WO 2005037316 A1 WO2005037316 A1 WO 2005037316A1
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- synoviolin
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- secretase
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- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2310/00—Structure or type of the nucleic acid
- C12N2310/10—Type of nucleic acid
- C12N2310/14—Type of nucleic acid interfering nucleic acids [NA]
Definitions
- the present invention relates to a method and a pharmaceutical composition for suppressing secretase activity. Specifically, a method of suppressing secretase activity by suppressing the expression of synoviolin to promote sensitivity of a secretase inhibitor, a method of suppressing secretase activity by binding synoviolin to Herp, and a method of secretase
- the present invention relates to a pharmaceutical composition containing a substance that inhibits activity.
- Synoviolin is a novel protein discovered as a membrane protein present in synovial cells from rheumatic patients (WO02 / 05207). Synoviolin has activity that contributes to normal bone formation or limb development, as studies using genetically modified animals have shown that these factors are directly involved in bone and joint development and the development of arthropathy. Is considered to be a protein having
- synoviolin expression is found ubiquitously throughout the body, not just in bones and joints. Therefore, in order to analyze the function of synoviolin in vivo, searching for a factor that binds to synoviolin is a powerful method. In particular, detection of the synoviolin substrate protein may be an important factor in identifying the intracellular signal transduction pathway involving synoviolin.
- the present inventors searched for a factor that binds to Synoviolin by the Yeast Two Hybrid method using Synoviolin as a Bait in order to elucidate what intracellular signaling pathway is involved in Synoviolin.
- a protein called Herp homocysteine "lndusiole endoplasmic reticulum stress-indusible ubiquitin-like domain member 1
- Herp homocysteine "lndusiole endoplasmic reticulum stress-indusible ubiquitin-like domain member 1
- Product of a homocystin-responsive gene Koreane K, Kato H, Miyata T. Homocysteine-respondent Genes in Vascular Endothelial Cells Identified by Differential Display Analysis. J. Biol. Chem. 1996 Nov 22; 271 (47): 29659- 29665).
- Herp is a membrane protein whose expression is induced by endoplasmic reticulum stress and which has a structurally ubiquitin-like domain (UBL) at the N-terminal side (Kokame K Agarwala KL, Kato H, Miyata T. Herp, a New Ubiquitin-like Membrane Protein Induced by Endoplasmic Reticulum Stress. J. Biol. Chem. 2000 Oct 20; 275 (42): 32846-32853).
- UDL structurally ubiquitin-like domain
- PS presenilin
- FAD familial Alzheimer's disease
- A a proteolytic enzyme involved in the transmembrane cleavage of / 3-amyloid protein
- Alzheimer's disease is one of the diseases of great interest in an aging society. Its most important feature is the observation of senile plaques, or fibrous -amyloid protein (A i3) deposits, in the brain.
- the protein is a protein produced by the cleavage of the amyloid precursor protein ( ⁇ ) by j8-secretase and ⁇ -secretase, and this excision is increasing in Alzheimer's disease patients.
- the present invention relates to a drug useful for treating cranial nerve diseases, particularly Alzheimer's disease.
- the purpose is to provide an agent.
- the present inventors have conducted intensive studies to solve the above problems, and as a result, focused on a substance that suppresses secretase activity, and using this substance, it was possible to suppress the accumulation of A / 3 and treat Alzheimer's disease.
- the inventor has found the findings and has completed the present invention.
- the present invention is as follows.
- a pharmaceutical composition containing a substance that inhibits secretase activity (1) A pharmaceutical composition containing a substance that inhibits secretase activity.
- composition according to (1) or (2), wherein the substance that inhibits secretase activity is a substance that promotes the sensitivity of a secretase inhibitor.
- synoviolin includes, for example, those having the amino acid sequence shown in SEQ ID NO: 2.
- a secretase inhibitor which enhances the sensitivity of a secretase inhibitor.
- FIG. 1 is a schematic diagram showing the full-length structure of Synoviolin and the structures of Synod TM and Syno Ring used for bait.
- FIG. 2 is a schematic diagram showing the full-length structure of Herp and the structure of fragmented Herp.
- FIG. 3 is a view showing the results of a binding experiment of Flag-Syno dTM and each of Herp constructs with a GST fusion protein.
- FIG. 4 is a diagram showing the results of immunoprecipitation experiments between HA / Syno and Flag / Herp.
- FIG. 5 is a graph showing the effect of a ⁇ -secretase inhibitor on wild-type and ⁇ -sinopiolin-deficient mouse fetal fibroblasts.
- FIG. 6 is a diagram showing the relationship between Synoviolin and Herp in the pull down assay.
- FIG. 7 is a diagram showing a binding region between Synoviolin and Herp in vivo.
- FIG. 8A is a diagram showing Herp expression in MEF cells.
- FIG. 8B is a diagram showing ubiquitination of Herp.
- FIG. 8C is a diagram showing constructs used for Herp analysis.
- Figure 9 is a diagram showing a ⁇ - secretase activity in MEF ( BEST MODE FOR CARRYING OUT THE INVENTION
- the present inventors have focused on the possibility that synopiolin is involved in the pathogenesis of Alzheimer's disease, and have clarified that the sensitivity of a secretase inhibitor increases in cells in which synoviolin expression is knocked out. This means that the sensitivity of the secretase inhibitor is promoted in a state in which the expression of synoviolin is inhibited, indicating that the sensitivity of the secretase inhibitor is promoted through the deletion of synoviolin. Things. He demonstrated that the use of substances that enhance the sensitivity of secretase inhibitors could lead to the treatment of Alzheimer's disease.
- the present invention has found that when synoviolin is bound to Herp protein, the Herp protein is ubiquitidized and degraded, and as a result, secretase activity is reduced.
- ⁇ ⁇ ⁇ is cut out by secretase (eg, secretase activity), and is accumulated to form senile plaques. Therefore, the present inventor paid attention to the fact that secretase is involved in the pathogenesis of Alzheimer's disease, and considered the construction of a process for suppressing accumulation and senile plaque formation by suppressing secretase activity.
- secretase eg, secretase activity
- the present invention is characterized in that accumulation of ⁇ ] 3 is suppressed by suppressing secretase activity.
- accumulation of ⁇ ] 3 it is possible to suppress the formation of senile plaques and to treat Alzheimer's disease.
- Synoviolin is a protein that is expressed throughout the body, and has been shown to control essential functions in living organisms. Therefore, it has been required to elucidate the function of synoviolin in vivo. In general, searching for a factor that binds to Synoviolin is one of the most effective methods for clarifying the function of a protein.In particular, detecting a Synoviolin substrate protein is important in cells involved in Synoviolin. Considered to be an important clue to the identification of signaling pathways available.
- Synoviolin was considered to be involved in the pathogenesis of Alzheimer's disease, especially in secretase activity.
- the mechanism for suppressing the activity of secretase is considered to be the case where the sensitivity of the secretase inhibitor is promoted or the case where synoviolin is bound to Herp protein (hereinafter, also simply referred to as “Herp”).
- Herp Herp protein
- the former suppresses secretase activity and promotes the accumulation of Ai3 by promoting the sensitivity of secretase inhibitors.
- the latter binds synoviolin to Herp, causing Herp ubiquitination and Is to reduce the accumulation of Ai3.
- the present inventors focused on the sensitivity of a secretase inhibitor, and considered the construction of a process for suppressing the accumulation of Ai3 and the formation of senile plaques by increasing the sensitivity of the inhibitor. Then, she argued that synoviolin might be involved in the pathogenesis of Alzheimer's disease, and expressed cells that knocked out synoviolin expression. Clarified that the sensitivity of secretase inhibitors was increased. This means that when synoviolin expression is inhibited, the sensitivity of the secretase inhibitor is promoted, and the sensitivity of the secretase inhibitor is promoted through synoviolin deletion. It indicates that. He demonstrated that the use of substances that enhance the sensitivity of secretase inhibitors could lead to the treatment of Alzheimer's disease.
- promoting the sensitivity of the secretase inhibitor means to enhance the drug effect of the secretase inhibitor so that it functions effectively.
- RNA interference can be used. RNAi can be induced by designing and synthesizing siRNA (small interfering RNA) for the synoviolin gene and introducing it into cells. '
- RNAi is a phenomenon in which dsRNA (double-strand RNA) binds specifically and selectively to a target gene, and the expression of the target gene is efficiently inhibited by cleaving the target gene.
- dsRNA double-strand RNA
- RNAi double-strand RNA
- siRNA The design of siRNA can be performed as follows.
- the gene is not particularly limited as long as it is a gene encoding synoviolin, and any arbitrary region can be used as a candidate.
- any region of GenBank Accession number AB024690 SEQ ID NO: 1 can be a candidate.
- a sequence starting with AA is selected from the selected region, and the length of the sequence is 19 to 25 bases, preferably 19 to 21 bases.
- the sequence should have a GC content of, for example, 40-60%.
- a DNA containing the following nucleotide sequence can be used as a target sequence of the siRNA.
- siRNA synthesized in vitro a method of linking siRNA synthesized in vitro to plasmid DNA and introducing this into cells, a method of annealing two RNAs, and the like can be employed.
- shRNA is an RNA molecule having a stem-loop structure because a part of a single strand forms a complementary strand with another area, which is called a short hairpin RNA (short hairpin RNA).
- shRNAs can be designed such that a portion forms a stem-loop structure. For example, assuming that the sequence of a certain region is sequence A and the complementary strand to sequence A is sequence B, these sequences are present in one sequence such that sequence A, spacer, and sequence B are present; So that the total length is 45-60 bases.
- Sequence A is a sequence of a partial region of the target Synoviolin gene (SEQ ID NO: 1), and the target region is not particularly limited. In addition, any area can be used as a candidate.
- the length of sequence A is 19-25 bases, preferably 19-21 bases.
- the present inventors use an evaluation system in which cells are treated with a secretase inhibitor and the proliferation activity of the cells is used as an indicator of secretase inhibition.
- the type of secretase is not particularly limited, and includes J3-secretase and ⁇ -secretase. Therefore, the secretase inhibitor may be either a secretase inhibitor or a ⁇ -secretase inhibitor.
- secretase inhibitor examples include, but are not limited to, L-685,458 (Peptide Research Laboratories), (3,5-Difluorophenylacetyl) -Ala-Phg-OBut [DAPT] ((Co.) Peptide Research Laboratories), Lys-Thr-Glu-Glu-Ile-SerGlu-Val-Asn-Sta-Val-Ala-Glu-Phe (Peptide Research Laboratories), Z-Leu-Leu-Nle-CHO (Wako).
- DAPT fetal fibroblasts
- synoviolin-deficient cells As a result of examining the effect of the inhibitor using the above-mentioned synoviolin-deficient cells, it was found that the cells deficient in synoviolin had a lower cell proliferation than the wild-type cells having synoviolin. In other words, it means that the deletion of Synoviolin promoted the sensitivity of the secretase inhibitor.
- the shRNA or siRNA produced in the present invention is a substance that suppresses the expression of Synoviolin, and is a pharmaceutical composition containing a substance that promotes the sensitivity of a secretase inhibitor (particularly, a gene therapy agent for brain and nervous system diseases such as Alzheimer's disease).
- a pharmaceutical composition of the present invention is used as a gene therapy agent for cerebral nervous system diseases, it is applied to the central nervous system such as the moon (cerebrum, diencephalon, midbrain, cerebellum), medulla oblongata, and spinal cord.
- the above cerebral nervous system diseases may be used alone or in combination.
- the pharmaceutical composition of the present invention When the pharmaceutical composition of the present invention is used as a gene therapy agent, there are mentioned a method of directly administering the pharmaceutical composition of the present invention by injection, and a method of administering a vector into which a nucleic acid has been incorporated.
- the above vectors include adenovirus vectors, adeno-associated vinores vector, henore virus vector, vaccinia vinores vector, letro vinores vector, lentiwi / res vector, etc., and these virus vectors are used. By doing so, it can be administered efficiently.
- the pharmaceutical composition of the present invention into phospholipid vesicles such as ribosomes and administer the vesicles.
- the endoplasmic reticulum retaining the siRNA or shRNA is introduced into predetermined cells by the lipofection method. Then, the obtained cells are systemically administered, for example, into a vein, an artery or the like. It can also be administered locally to the brain and the like.
- the dosage of the pharmaceutical composition of the present invention varies depending on age, sex, symptoms, administration route, administration frequency, and dosage form.
- the dosage is 10 6 per day: L 0 13 About 1 to 8 weeks.
- a commercially available gene introduction kit for example, AdenoExpress: Clontech
- AdenoExpress: Clontech a commercially available gene introduction kit
- Herp is induced by endoplasmic reticulum stress and is structurally a transmembrane endoplasmic reticulum protein with a UBL at the N-terminal side, and Herp endogenous to the cell is polyubiquitinated.
- the present inventors focused on this Herp, decomposed the Herp, suppressed the ⁇ -secretase activity and suppressed the intramembrane cleavage of A j3, and thereby accumulated and accumulated A. We considered the construction of a process to suppress the formation of eclipse.
- the minimum binding site between Synoviolin and Herp can be determined by using various cleavage fragments of Herp and performing a binding test between the fragment and Synoviolin.
- the minimum binding site of Herp to Synoviolin was determined to be the amino acid sequence (SEQ ID NO: 18) encoded by the human Herp gene (SEQ ID NO: 17). This region corresponds to the 40th amino acid residue at positions 161 to 200 (the following sequence).
- the Synoviolin used in the present invention may have the amino acid sequence (SEQ ID NO: 2) encoded by SEQ ID NO: 1;
- An amino acid sequence in which one or several amino acids have been deleted, substituted or added in the sequence may have an activity of degrading Herp by ubiquitination.
- the introduction of the mutation such as the deletion or substitution can be performed by a known site-directed mutagenesis method (for example, GeneTailor TM Site-Directed Mutagenesis System (Invitrogen), TaKaRa Site-Directed). Mutagenesis System (MutarrK, Mutan-Super Express Km, etc. (Takara)) can be used.
- Herp (-bind) gene in which the above-mentioned 40 amino acid residue region was deleted was prepared, and this gene was inserted into an appropriate vector to obtain HEK293T.
- the Hei'p (-bind) is labeled with an HA tag at the N-terminus.
- the synoviolin label may be labeled with a FLAG tag.
- Analysis of the results may be performed by extracting whole cell extract (WCE) after strong expression, confirming protein expression, and performing immunoprecipitation with an anti-HA antibody or anti-FLAG antibody.
- WCE whole cell extract
- Herp binds to synoviolin
- Herp (-bind) does not bind to synoviolin. It is found that 19) is essential for binding to synoviolin.
- Herp is degraded by ubiquitination by binding to synoviolin. Therefore, whether Herp is a substrate for Synoviolin can be confirmed by polyubiquitination of Herp. That is, in HEK293T cells, a Herp mutant in which a FLAG tag is added and a part of amino acid residues are mutated is produced to express HA-Ubiquitin and synoviolin. After extracting cell extract (WCE) and confirming the expression of each protein by Western blotting, immunoprecipitation with anti-HA antibody allows Herp to express poly-Ubiquitin (Ub) in cells. Check whether it has been implemented.
- WCE cell extract
- Ub poly-Ubiquitin
- Herp (-UBL) from which the ubiquitin and synoviolin have been strongly expressed at the same time, the Herb (-UBL) ubiquitinated band has a higher deletion rate than the case where only ubiquitin is strongly expressed. Is strong.
- Synoviolin is involved in Alzheimer's disease by using y-secretase activity in wild-type cells (eg, MEF (syno (+ / +)) using synoviolin knockout cells (eg, MEF (syno (-/-))).
- MEF synoviolin knockout cells
- the MEF cells are treated with a lysis buffer to prepare a cell lysate, and then a reaction buffer and a fluorescently-labeled substrate are added to perform an enzyme reaction.
- a reaction buffer and a fluorescently-labeled substrate are added to perform an enzyme reaction.
- synoviolin when synoviolin is bound to Herp or Herp-PS complex, it causes the degradation of Herp by ubiquitination, and eventually suppresses the accumulation of synovio, which is a cause of Alhaimai disease.
- Phosphorus is a substance involved in suppressing secretase activity, and can be used as a pharmaceutical composition for treating cerebral nervous system diseases such as Alzheimer's disease.
- the pharmaceutical composition of the present invention When used as a therapeutic agent for a cerebral nervous system disease, (Cerebrum, diencephalon, midbrain, cerebellum), central nervous system such as medulla oblongata and spinal cord.
- the pharmaceutical composition of the present invention can be applied to the affected part as it is, or by any known method, for example, injection such as intravenous, intramuscular, intraperitoneal or subcutaneous, or inhalation from the nasal cavity, oral cavity or lung, oral It can also be introduced into target cells or organs by administration, intravascular administration using a catheter, or the like.
- a known pharmaceutically acceptable carrier such as an excipient, a bulking agent, a binder, a lubricant, a known additive (buffer, isotonicity, etc.) Agents, chelating agents, coloring agents, preservatives, flavoring agents, flavoring agents, sweetening agents, etc.).
- the pharmaceutical composition of the present invention includes tablets, capsules, powders, granules, pills, liquids, syrups, and other oral administrations, injections, external preparations, suppositories, eye drops, and other parenteral administrations. Depending on the form, it can be administered orally or parenterally. Preferably, local injection into muscle, abdominal cavity, etc., injection into vein and the like are exemplified.
- the dose is appropriately selected depending on the type of the active ingredient, the route of administration, the administration subject, the age, weight, sex, symptoms and other conditions of the patient. 100 mg, preferably 0.1 mg to 10 mg, more preferably 0.1 mg to 1.0 mg. Synoviolin can be administered once daily or in several divided doses.
- the pharmaceutical composition (Sinoviolin) of the present invention When the pharmaceutical composition (Sinoviolin) of the present invention is used by expressing the gene in vivo (in the case of gene therapy), a method of directly administering the Synoviolin gene by injection in the same manner as described for the gene therapy agent is used. In addition, there is a method of administering a vector into which the synoviolin gene has been incorporated.
- the vector include an adenovirus vector, an adeno-associated virus vector, a herpes innores vector, a vaccinia winores vector, a retroinores vector, a lentivirus vector, and the like. These virus vectors are used. By doing so, it can be administered efficiently.
- the Synoviolin gene used in the present invention is not limited to the one having the nucleotide sequence shown in SEQ ID NO: 1, but hybridizes with a sequence complementary to the nucleotide sequence under stringent conditions. , And, It also includes a gene encoding a protein having a binding activity to Herp.
- Salt concentration during washing is 100-500 mM, preferably 150-300 mM, and the temperature is 50-70 ° C, preferably 55-65 ° C in the hybridization. Means the condition.
- synoviolin gene into phospholipid vesicles such as ribosomes and administer the vesicles.
- the endoplasmic reticulum retaining the above gene is introduced into predetermined cells by the lipofection method. Then, the obtained cells are systemically administered, for example, into a vein or an artery. It can also be administered locally to the brain and the like.
- the dose of Synoviolin gene varies depending on age, gender, symptoms, route of administration, frequency of administration, and dosage form. For example, in the case of adenovirus, the dose per day is about 10 6 to 13 It is administered every 1 to 8 weeks.
- This example is an example of Herp screening using the Yeast Two Hybrid system.
- the Yeast Two Hybrid system was performed by the yeast transformation method (Pro. Natl. Aca. Sci. USA, 88: 9578_9582, 1991) using the MATCHMAKER system (CLONTECH).
- the library used for Her screening was a human cartilage-derived cDNA inserted into the pACT2 vector (pACT2-Y). After a heat shock of 42 ° (: 15 minutes), pGBT9-Syno dTM or pGBT9_Syno Ringte.O / z g) and pACT2-Y (20 / g) were introduced into yeast strain Y190.
- Escherichia coli strain HB101 was transformed with the extracted plasmid DNA, spread on an M9 plate (-Leu), and cultured at 37 ° C for 2 days. The appearing colonies were cultured in a 20 g / ml LB medium with shaking at 37 ° (16 hours), and plasmid DNA was extracted by Al-Li-SDS method.
- This example is an example in which Synoviolin and Herp are bound in vitro.
- a pcDNA3-Flag-Syno dTM in which 1854 bp was inserted from 706b of TNT-coupled Translation System (Promega) and Synoviolin was prepared.
- in vitro translation was performed, and (i) Flag-Syno dTM fusion protein, (ii) A GST fusion protein of Herp and (iii) a fragmented GST fusion protein of Herp were prepared (Fig. 2).
- “aa” indicates the position number of the amino acid sequence
- UBQ indicates the ubiquitin domain.
- fusion proteins and (iv) the GST protein as a control 20mM Hepes (pH7.9), lOOmM NaCl , ImM EDTA, 0.05% Tween, 5% Glycerol, ImM DTT, 0.2mM NaV0 4, 5mM NaF, a ImM PMSF
- the reaction was performed at 4 ° C for 16 hours.
- the reaction product was subjected to SDS-PAGE, and radioactivity was detected with an image analyzer (BAS2000, Fujix).
- This example is an example in which Synoviolin and Herp are bound in vivo.
- the gene was transfected by g.
- Cells were collected 24 hours after gene transfer, dissolved in Lysis buffer, and immunoprecipitated with anti-HA and anti-Flag antibodies at 4 ° C overnight.
- the bound and free proteins were separated by centrifugation and detected by Western blotting.
- Anti-HA and anti-Flag antibodies were used for detection.
- This example is an example in which the influence of a ⁇ -secretase inhibitor on the cell growth activity of synoviolin-deficient cells was confirmed.
- Synoviolin transgenic mice wild type mice
- synoviolin gene fetal fibroblasts obtained from deficient mice (MEFs)
- MEFs deficient mice
- the cultured cells were treated with a ⁇ -secretase inhibitor (Z-Leu-Leu-Nle_CHO, Wako), cultured for 24 hours, added with Alamer Blue, and measured for absorbance after 2 hours.
- Figure 5 shows the results.
- the black column shows cells derived from wild-type mice
- the white column shows cells derived from Synoviolin-deficient mice.
- the effect of the T / -secretase inhibitor is more pronounced than in cells from wild-type mice.
- Tuni Represents tunicamycin.
- FIG. 5 shows that synoviolin-deficient mouse fetal fibroblasts (Syno- ⁇ ), which inhibited ⁇ -secretase activity, suppressed cell proliferation activity compared to synoviolin mouse fetal fibroblasts (Syno + / +).
- Syno- ⁇ synoviolin-deficient mouse fetal fibroblasts
- Syno + / + synoviolin mouse fetal fibroblasts
- the minimum binding site to Synoviolin was determined for the Synoviolin substrate candidate molecule Herp obtained from the human cartilage cDNA library by Yeast Two Hybrid Screening using Synoviolin as the Bait. That is, fragmented inserts were produced by PCR using pcDNA3 Flag or Herp incorporated in the HA vector as type III. For the purpose of GST Pull Down assay, Synoviolin and Herp were fragmented and inserted into pGEX and pcDNA3 vector.
- Herp was shown to bind to Synoviolin, and the identification of the region (between 16 :! and 200 in the amino acid sequence) that binds Synoviolin on the Herp protein was in progress. In this example, the following experiment was performed to determine what effect the deletion of this region would have on the binding between Herp and Synoviolin.
- the portion encoding the amino acids 161 to 200 on the Herp gene was deleted by PCR to produce the Herp (-bind) gene (FIG. 7, top). Then, an HA tag was added to the N-terminus of this gene and inserted into the pcDNA3 vector. Subsequently, in HEK293T cells, Herp with HA tag, Herp (-bind), and empty vector were each strongly expressed with synoviolin with FLAG tag. Twenty-four hours later, whole cell extract (WCE) was extracted, the expression of each protein was confirmed, and immunoprecipitation was performed with an anti-HA antibody or an anti-FLAG antibody.
- WCE whole cell extract
- Herp was examined as a substrate for Synoviolin.
- the experimental method is as follows.
- Herp has been shown to bind intracellularly to synoviolin in yeast two-hybrid and GST-pull down experiments.
- Herp is an endoplasmic reticulum transmembrane protein with UBL at the N-terminus, and it has been reported that Herp expressed in cells is polyubiquitinated (Kokame K, Kato H, Miyata T. Homocystei ne-respondent Genes in Vascular Endothelial Cells Identified by Differential Display Analysis. J. Biol. Chem. 1996 Nov 22; 271 (47): 29659.29 665). It was also observed that Herp protein in Synoviolin () MEF cells was more accumulated than in Synoviolin (+ / +) MEF cells (Fig. 8A). Therefore, Herp was considered to be a possible substrate for Synoviolin.
- amino acid sequence consisting of LKAHLSRVYPERPR (SEQ ID NO: 20), which is the 37th to 50th region of the amino acid sequence of Herp, was used as the recognition site of the anti-Herp (N) antibody.
- Herp is a substrate for synoviolin and is converted to autoubiquitination.
- HA-Ubiquitin / pcDNA3 or Synoviolin / pcDNA3 were used, respectively, using various Herp mutant constructs with FLAG tag (Fig.8C). Strongly expressed.
- WCE whole cell extract
- Herp wild-type when ubiquitin alone was strongly expressed, or when ubiquitin and synopiolin were simultaneously overexpressed, a band of polyubiquitination was observed. In addition, when ubiquitin and synoviolin were overexpressed simultaneously, the ubiquitin of Herp became weaker than when ubiquitin alone was overexpressed, indicating that the degradation of ubiquitinated Herp was enhanced. Was. On the other hand, in Herp (-bind), no ubiquitin band was detected when either ubiquitin was overexpressed or when ubiquitin and synoviolin were overexpressed simultaneously.
- Herp the ubiquitin and synoviolin simultaneously strongly expressed the Herb (-UBL) Ub band more strongly than the case where ubiquitin alone was strongly expressed (FIG. 8B). Therefore, the Herp UBL region was thought to be essential for synoviolin binding to synoviolin, but not for ubiquitination but for degradation.
- the present invention provides a method for suppressing secretase activity.
- the present invention provides a pharmaceutical composition containing a substance that inhibits secretase activity.
- the pharmaceutical composition of the present invention is useful as an agent for treating a cerebral nervous system disease such as Alzheimer's disease.
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Abstract
Description
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US10/576,281 US20070275887A1 (en) | 2003-10-20 | 2004-10-20 | Method of Inhibiting Secretase Activity |
EP04793062A EP1683527A1 (en) | 2003-10-20 | 2004-10-20 | Method of inhibiting secretase activity |
JP2005514891A JPWO2005037316A1 (ja) | 2003-10-20 | 2004-10-20 | セクレターゼ活性を抑制する方法 |
CA002542765A CA2542765A1 (en) | 2003-10-20 | 2004-10-20 | Method of inhibiting secretase activity |
AU2004281142A AU2004281142A1 (en) | 2003-10-20 | 2004-10-20 | Method of inhibiting secretase activity |
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JP2002173448A (ja) * | 2000-12-01 | 2002-06-21 | Sumitomo Pharmaceut Co Ltd | β−セクレターゼ活性阻害剤 |
WO2002052007A1 (fr) * | 2000-12-22 | 2002-07-04 | Locomogene, Inc. | Proteine de cellule de membrane synoviale |
JP2002322198A (ja) * | 2001-02-20 | 2002-11-08 | Pfizer Prod Inc | β−アミロイド切断酵素の新規な阻害剤 |
WO2003024485A1 (en) * | 2001-09-14 | 2003-03-27 | Ono Pharmaceutical Co., Ltd. | REMEDIES FOR DISEASES CAUSED BY β-AMYLOIDS CONTAINING 2-100β INHIBITOR AS THE ACTIVE INGREDIENT |
WO2003057165A2 (en) * | 2002-01-04 | 2003-07-17 | The Rockefeller University | COMPOSITIONS AND METHODS FOR PREVENTION AND TREATMENT OF AMYLOID-β PEPTIDE-RELATED DISORDERS |
WO2003070895A2 (en) * | 2002-02-20 | 2003-08-28 | Ribozyme Pharmaceuticals, Inc. | RNA INTERFERENCE MEDIATED TREATMENT OF ALZHEIMER'S DISEASE USING SHORT INTERFERING NUCLEIC ACID (siNA) |
JP2003525947A (ja) * | 2000-03-03 | 2003-09-02 | メルク シャープ エンド ドーム リミテッド | ガンマ−セクレターゼ阻害物質 |
JP2003289881A (ja) * | 2001-07-31 | 2003-10-14 | Chubu National Hospital | アルツハイマー病関連遺伝子のスクリーニング方法 |
-
2004
- 2004-10-20 JP JP2005514891A patent/JPWO2005037316A1/ja not_active Abandoned
- 2004-10-20 EP EP04793062A patent/EP1683527A1/en not_active Withdrawn
- 2004-10-20 CN CNA2004800308727A patent/CN1871030A/zh active Pending
- 2004-10-20 CA CA002542765A patent/CA2542765A1/en not_active Abandoned
- 2004-10-20 WO PCT/JP2004/015950 patent/WO2005037316A1/ja not_active Application Discontinuation
- 2004-10-20 AU AU2004281142A patent/AU2004281142A1/en not_active Abandoned
- 2004-10-20 US US10/576,281 patent/US20070275887A1/en not_active Abandoned
- 2004-10-20 KR KR1020067007452A patent/KR20060093713A/ko not_active Ceased
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003525947A (ja) * | 2000-03-03 | 2003-09-02 | メルク シャープ エンド ドーム リミテッド | ガンマ−セクレターゼ阻害物質 |
JP2002173448A (ja) * | 2000-12-01 | 2002-06-21 | Sumitomo Pharmaceut Co Ltd | β−セクレターゼ活性阻害剤 |
WO2002052007A1 (fr) * | 2000-12-22 | 2002-07-04 | Locomogene, Inc. | Proteine de cellule de membrane synoviale |
JP2002322198A (ja) * | 2001-02-20 | 2002-11-08 | Pfizer Prod Inc | β−アミロイド切断酵素の新規な阻害剤 |
JP2003289881A (ja) * | 2001-07-31 | 2003-10-14 | Chubu National Hospital | アルツハイマー病関連遺伝子のスクリーニング方法 |
WO2003024485A1 (en) * | 2001-09-14 | 2003-03-27 | Ono Pharmaceutical Co., Ltd. | REMEDIES FOR DISEASES CAUSED BY β-AMYLOIDS CONTAINING 2-100β INHIBITOR AS THE ACTIVE INGREDIENT |
WO2003057165A2 (en) * | 2002-01-04 | 2003-07-17 | The Rockefeller University | COMPOSITIONS AND METHODS FOR PREVENTION AND TREATMENT OF AMYLOID-β PEPTIDE-RELATED DISORDERS |
WO2003070895A2 (en) * | 2002-02-20 | 2003-08-28 | Ribozyme Pharmaceuticals, Inc. | RNA INTERFERENCE MEDIATED TREATMENT OF ALZHEIMER'S DISEASE USING SHORT INTERFERING NUCLEIC ACID (siNA) |
Also Published As
Publication number | Publication date |
---|---|
EP1683527A1 (en) | 2006-07-26 |
JPWO2005037316A1 (ja) | 2006-12-28 |
US20070275887A1 (en) | 2007-11-29 |
CA2542765A1 (en) | 2005-04-28 |
AU2004281142A1 (en) | 2005-04-28 |
CN1871030A (zh) | 2006-11-29 |
KR20060093713A (ko) | 2006-08-25 |
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