WO2013190978A1 - 骨髄幹細胞の誘引剤及び骨髄幹細胞の誘引方法 - Google Patents
骨髄幹細胞の誘引剤及び骨髄幹細胞の誘引方法 Download PDFInfo
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- A61K31/00—Medicinal preparations containing organic active ingredients
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- A61K31/7028—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages
- A61K31/7032—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a polyol, i.e. compounds having two or more free or esterified hydroxy groups, including the hydroxy group involved in the glycosidic linkage, e.g. monoglucosyldiacylglycerides, lactobionic acid, gangliosides
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- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/33—Heterocyclic compounds
- A61K31/335—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
- A61K31/35—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom
- A61K31/352—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. methantheline
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- A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
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- A61K36/00—Medicinal preparations of undetermined constitution containing material from algae, lichens, fungi or plants, or derivatives thereof, e.g. traditional herbal medicines
Definitions
- the present invention relates to an attractant for bone marrow stem cells and a method for attracting bone marrow stem cells.
- Bone marrow stem cells are undifferentiated cells generated in the bone marrow and are known to be able to differentiate into cells of various body tissues.
- bone marrow stem cells are attracting attention as being able to restore tissue function by differentiating into tissue cells in a tissue that has lost function under the influence of a differentiation-inducing agent that induces differentiation.
- bone marrow stem cells can be differentiated into tissue cells under the influence of a differentiation-inducing agent after moving from the bone marrow to the inflamed tissue or damaged tissue through the bloodstream, for example. It is attracting attention as.
- fibroblast growth factor Fibroblast Growth
- Platelet-derived growth factor Platelet-derived growth factor
- this type of differentiation-inducing agent has the ability to differentiate bone marrow stem cells into predetermined tissue cells, but it has the ability to attract bone marrow stem cells, such as bone marrow stem cells circulating in the body in the bloodstream. There is a problem that the performance of attracting to a predetermined body tissue is not always sufficient.
- the present invention has been made in view of the above-mentioned problems and the like, and an object thereof is to provide an attractant for bone marrow stem cells having excellent attraction performance for bone marrow stem cells. It is another object of the present invention to provide a method for attracting bone marrow stem cells having excellent attraction performance for bone marrow stem cells.
- the attractant for bone marrow stem cells according to the present invention is characterized by containing at least one of cinnamtannin B1 and pentagalloylglucose.
- the method for attracting bone marrow stem cells according to the present invention is characterized by attracting bone marrow stem cells with the attractant.
- the attractant for bone marrow stem cells of the present embodiment contains at least one of cinnamtannin B1 and pentagalloyl glucose.
- the cinnamtannin B1 is a compound having a molecular structure represented by the following formula (1).
- the concentration of cinnamtannin B1 contained in the bone marrow stem cell attractant is not particularly limited, and examples thereof include 0.001 to 100% by weight.
- the bone marrow stem cell attractant may include a pH buffer, a solvent such as water, a surfactant, an antiseptic, an oil, a polyhydric alcohol, a water-soluble polymer compound, and the like.
- the attractant for bone marrow stem cells containing the cinnamtannin B1 is produced, for example, by dissolving commercially available cinnamtannin B1 in an appropriate solvent.
- the attractant for bone marrow stem cells containing the cinnamtannin B1 is, for example, bay (Laurus nobilis L.), cowberry (Vaccinium vitis-idaea), arameria laevigata, cinnamon (Cinnamomum zeylanicum), blackberry (Lindera umbellate), or Manufactured by extracting a portion containing cinnamtannin B1 in plants such as Metaxya rostrata.
- the pentagalloyl glucose is a compound having a molecular structure of the following formula (2).
- the concentration of pentagalloylglucose contained in the bone marrow stem cell attractant is not particularly limited, and examples thereof include 0.001 to 100% by weight.
- the bone marrow stem cell attractant may include a pH buffer, a solvent such as water, a surfactant, an antiseptic, an oil, a polyhydric alcohol, a water-soluble polymer compound, and the like.
- the attractant for bone marrow stem cells containing pentagalloylglucose is produced, for example, by dissolving commercially available pentagalloylglucose in an appropriate solvent.
- the bone marrow stem cell attractant containing pentagalloylglucose is produced, for example, by extracting and treating evening primrose seeds and glazes.
- the attractant for bone marrow stem cells may contain either cinnamtannin B1 or pentagalloylglucose, and may contain both cinnamtannin B1 and pentagalloylglucose.
- the method for attracting bone marrow stem cells according to the present embodiment is a method for attracting bone marrow stem cells using the bone marrow stem cell attractant.
- Bone marrow stem cells are contained in the bone marrow tissue and can further differentiate within the bone marrow tissue or migrate from the bone marrow tissue to other body tissues along the bloodstream.
- the bone marrow stem cells include bone marrow mesenchymal stem cells that can differentiate into cells of mesodermal tissue such as chondrocytes, adipocytes, and muscle cells, and hematopoietic stem cells that can differentiate into blood cells such as erythrocytes and leukocytes.
- bone marrow mesenchymal stem cells can differentiate not only into cells of mesodermal tissue but also into cells of endoderm tissue such as nerves and endoderm tissue such as liver.
- Bone marrow stem cells that are attracted in the attracting method of the present invention are preferably bone marrow mesenchymal stem cells in that they can be differentiated into more diverse cells after being attracted.
- bone marrow stem cells can be attracted in vitro or in vivo using the bone marrow stem cell attractant.
- the bone marrow stem cells are arranged on one side of the membrane, for example, a method for attracting bone marrow stem cells to the other side of the membrane by placing the attractant for the bone marrow stem cells on the other side and waiting for a predetermined time can be performed.
- a portion of bone marrow stem cells seeded on a slide glass is scraped, and a medium containing an attractant for bone marrow stem cells is applied to the scraped portion, so that bone marrow stem cells are applied.
- a method for attracting bone marrow stem cells to the scraped portion can be performed by placing the cells under the culture conditions described above.
- the degree of attraction of bone marrow stem cells in the above method for attracting bone marrow stem cells can be evaluated by staining the bone marrow stem cells and measuring the degree of staining. Moreover, it can evaluate by confirming the attracted bone marrow stem cell visually.
- an aqueous gel containing the above-mentioned bone marrow stem cell attractant is implanted subcutaneously in a normal mouse, and the mouse bone marrow stem cells are injected into the vein of the mouse, and the mouse is in a predetermined period
- a method of attracting bone marrow stem cells to an aqueous gel can be carried out.
- a bone marrow stem cell of a mouse is transplanted into the bone marrow of a wound model mouse, and the bone marrow stem cell attractant is applied to the wound part of the mouse, thereby
- a method of attracting bone marrow stem cells to the part can be performed.
- the degree of attraction of bone marrow stem cells in the method for attracting bone marrow stem cells as described above is determined by using bone marrow stem cells of mice expressing green fluorescent protein (Green Fluorescent Protein) (hereinafter also referred to as GFP) as bone marrow stem cells. It can be evaluated by measuring the intensity of fluorescence in the obtained bone marrow stem cells.
- Green Fluorescent Protein Green Fluorescent Protein
- a method of applying a bone marrow stem cell attractant to a predetermined body tissue and attracting bone marrow stem cells to the body tissue can be performed. More specifically, in the method for attracting bone marrow stem cells in a living body, for example, the bone marrow stem cell attractant is contained in the epidermis tissue (such as the stratum corneum) of the skin by application or the like, and the bone marrow present in the blood A method of attracting leaf stem cells to epidermal tissue can be performed.
- various tissues such as a muscle tissue, a cartilage tissue, and a liver tissue can be cited in addition to an epidermal tissue.
- the method for attracting bone marrow stem cells in a living body is performed, for example, for the purpose of accumulating bone marrow stem cells in the tissue before the bone marrow stem cells are differentiated into various tissue cells.
- the method for attracting bone marrow stem cells can be performed in a living body of a human body or a non-human animal body.
- the method for attracting bone marrow stem cells is performed non-therapeutically in a human body, for example for cosmetic purposes.
- an attractant in which the cinnamtannin B1 or the pentagalloyl glucose is diluted to an appropriate concentration can be used.
- the liquid for dilution is not particularly limited, and for example, water, physiological saline, bone marrow stem cell culture medium, and the like can be used.
- the bone marrow stem cell attractant containing the cinnamtannin B1 is preferably used at a cinnamtannin B1 concentration of 1 to 100 ⁇ g / mL, more preferably at a cinnamtannin B1 concentration of 10 to 40 ⁇ g / mL.
- the attractant for bone marrow stem cells containing pentagalloyl glucose is preferably a pentagalloyl glucose concentration of 0.01 to 1000 ⁇ g / mL, more preferably 0.94 to 94 ⁇ g / mL. Used at glucose concentration.
- the bone marrow stem cell attractant and bone marrow stem cell attractant of the present embodiment are as exemplified above, but the present invention is not limited to the above exemplified bone marrow stem cell attractant and bone marrow stem cell attractant. .
- adopted in the attractant of a general bone marrow stem cell and the method of attracting a bone marrow stem cell can be employ
- Cinnamtannin B1 (model number “ALX-350-365-M005” manufactured by ENZO) was dissolved in a solvent (Dulbecco's modified Eagle's medium DMEM) to a concentration of 10 ⁇ g / mL, and an attractant containing cinnamtannin B1 was added. Manufactured.
- Example 2 An attractant was produced in the same manner as in Example 1 except that the concentration of cinnamtannin B1 was 20 ⁇ g / mL.
- Example 3 An attractant was produced in the same manner as in Example 1 except that the concentration of cinnamtannin B1 was 40 ⁇ g / mL.
- Pentagalloylglucose (model number “G7548” manufactured by SIGMA-ALDRICH) was dissolved in a solvent (DMEM) to a concentration of 94 ng / mL to produce an attractant containing pentagalloylglucose.
- Example 5 An attractant was produced in the same manner as in Example 4 except that the concentration of pentagalloyl glucose was 0.94 ⁇ g / mL.
- Example 6 An attractant was produced in the same manner as in Example 4 except that the concentration of pentagalloyl glucose was 9.4 ⁇ g / mL.
- Example 7 An attractant was produced in the same manner as in Example 4 except that the concentration of pentagalloyl glucose was 94 ⁇ g / mL.
- FIG. 1 schematically shows the state of the evaluation method. The details of the evaluation method will be described below with reference to FIG.
- a DMEM solution having a concentration of 20 ng / mL PDGF-BB (platelet-derived growth factor PEPRO TECH) was prepared. That is, a solution in which PDGF-BB was diluted with DMEM to 20 ng / mL was prepared.
- mouse bone marrow mesenchymal stem cells (hereinafter also referred to as mMSC) are cultured and collected until confluent, and the stem cells are suspended in a liquid so as to be 1 ⁇ 10 7 cells / ml.
- a liquid was prepared.
- As a liquid for suspending cells 10% by volume FBS / DMEM “P / S ( ⁇ )” was used.
- a liquid not containing P / S which was diluted with DMEM so that the concentration of FBS was 10% by volume
- DMEM fetal calf serum
- a Boyden chamber B manufactured by Neuro Probe
- Conditions are set so that any one of the test samples can be tested in the same Boyden chamber B with a negative control sample and a positive control sample, and 28 ⁇ L of each sample is applied to each lower well of the chamber B. did.
- the membrane M of the Boyden chamber B a trade name “Polycarbonate Membranes” (pore size: 8 ⁇ m, manufactured by Neuro Probe) was used. Subsequently, 50 ⁇ L of the cell suspension was seeded in the upper well P, and cultured for 4 hours under conditions of 37 ° C. and 5% CO 2 (see FIG. 1B). After culturing for 4 hours, as shown in FIG. 1 (c), the unmigrated mMSC was removed with the attached filter wiper R. Then, only the mMSC that migrated to the lower side of the membrane M was stained by Diff-Quick staining (using a Sysmex kit).
- the stained image was digitized and loaded into a computer, and the portion stained blue was converted to white so that the image was binarized into black and white.
- luminance in each well range was measured using the function of image editing software (brand name "Photoshop”).
- the mMSC attracting activity of the bone marrow stem cell attractant was evaluated by comparing the brightness in the negative and positive control samples with the brightness in each test sample.
- the evaluation results for the attractants of Examples 1 to 3 are shown in FIG. 2 as a luminance graph.
- the evaluation results for the attractants of Examples 4 to 7 are also shown in FIG.
- the attractant for bone marrow stem cells of Examples 1, 2, and 7 is particularly excellent in the attraction performance of bone marrow stem cells.
- mice (Skin regeneration test (wound healing test) method) 1.
- Experimental material 1-a Animals C57BLKs / J-dbm genetically diabetic mice (BKS.Cg- + Leprdb / + Leprdb / Jcl *, db / db mice, female, 8 weeks old) were purchased from CLEA Japan. The mice were preliminarily raised for 1 week or longer while freely taking tap water and solid feed, and then 9-week-old mice were subjected to the test.
- 1-b Wound dressing / Polyurethane film dressing: Product name "3M Tegaderm transparent dressing 1620" 6cm x 7cm (manufactured by Sumitomo 3M) 1-c.
- Elastic bandage Product name “Silky Tex” (manufactured by ALCARE) 1-d. Test substance / basic fibroblast growth factor (bFGF) Trafermin -positive control Product name "Fiblast spray 250" (manufactured by Kaken Pharmaceutical) Concentration 100 ⁇ g / mL -Phosphate buffered saline (PBS)-negative control-Cinnamtannin B1 (120 ⁇ g / mL concentration, 40 ⁇ g / mL concentration) PBS solution Method 2-a. Production of full-thickness skin defect wounds All treatments for mice were performed under isoflurane inhalation anesthesia.
- PBS Phosphate buffered saline
- mice were shaved using an electric clipper and an electric shaver the day before wound creation.
- the back skin was wiped with disinfectant ethanol, and a circular ( ⁇ 1.5 cm) full-thickness skin wound was created in the center of the back using surgical scissors.
- 2-b. Administration of test substance After skin excision, 20 ⁇ L of bFGF (trafermin), PBS, or cinnamtannin B1 was administered dropwise to the wound surface per site. Administration was performed using 3 animals per administration group. After the administration, the wound surface was sealed with the above polyurethane film dressing, and the above elastic bandage was wound thereon. The exchange of the coating agent and the administration of the test substance were carried out 3 times a week for 4 weeks.
- FIG. 4 shows the results of measuring the wound area in the mouse living body. As can be understood from FIG. 4, it is considered that bone marrow stem cell attractant containing cinnamtannin B1 attracted bone marrow stem cells to the wound site and promoted wound healing.
- the attractant for bone marrow stem cells and the method for attracting bone marrow stem cells of the present invention have the effect of being excellent in the ability to attract bone marrow stem cells.
- the bone marrow stem cell attractant and bone marrow stem cell attraction method of the present invention are used, for example, to attract bone marrow stem cells generated in the bone marrow to a predetermined body tissue before the bone marrow stem cells are differentiated in the predetermined body tissue.
- the method for attracting bone marrow stem cells and the method for attracting bone marrow stem cells according to the present invention includes, for example, bone marrow stem cells circulating in the body in the bloodstream by performing a treatment that includes the attractant in a predetermined body tissue. Is preferably used for the purpose of attracting and accumulating in the body tissue.
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Abstract
Description
前記骨髄幹細胞としては、軟骨細胞、脂肪細胞、筋肉細胞などの中胚葉性組織の細胞へ分化し得る骨髄間葉系幹細胞、赤血球や白血球などの血液細胞へ分化し得る造血幹細胞などが挙げられる。
前記骨髄幹細胞のなかでも骨髄間葉系幹細胞は、中胚葉性組織の細胞に分化するだけでなく、神経などの外胚葉性組織、肝臓などの内胚葉性組織の細胞へも分化し得る。本発明の誘引方法において誘引される骨髄幹細胞としては、誘引された後に、より多様な細胞に分化し得るという点で、骨髄間葉系幹細胞が好ましい。
また、生体外での骨髄幹細胞の誘引方法においては、例えば、スライドグラス上に播種した骨髄幹細胞の一部を掻き取り、掻き取った部分に骨髄幹細胞の誘引剤を含む培地を塗布して骨髄幹細胞の培養条件下におくことにより、掻き取った部分へ骨髄幹細胞を誘引する方法などが実施され得る。
また、生体での骨髄幹細胞の誘引方法においては、例えば、マウスの骨髄幹細胞を、創傷モデルマウスの骨髄に移植するとともに、該マウスの創傷部に前記骨髄幹細胞の誘引剤を塗布することにより、創傷部に骨髄幹細胞を誘引する方法などが実施され得る。
なお、生体での誘引方法において骨髄幹細胞が誘引されて来る体内組織としては、表皮組織の他に、筋肉組織、軟骨組織、肝臓組織などの各種組織が挙げられる。
例えば、前記シンナムタンニンB1を含む骨髄幹細胞の誘引剤は、好ましくは、1~100μg/mLのシンナムタンニンB1濃度、より好ましくは、10~40μg/mLのシンナムタンニンB1濃度にて使用される。
また、例えば、前記ペンタガロイルグルコースを含む骨髄幹細胞の誘引剤は、好ましくは、0.01~1000μg/mLのペンタガロイルグルコース濃度、より好ましくは、0.94~94μg/mLのペンタガロイルグルコース濃度にて使用される。
シンナムタンニンB1(ENZO社製 型番「ALX-350-365-M005」)を10μg/mL濃度となるように溶媒(ダルベッコ変法イーグル培地 DMEM)に溶解させ、シンナムタンニンB1を含む誘引剤を製造した。
シンナムタンニンB1の濃度が20μg/mL濃度となるようにした点以外は、実施例1と同様にして誘引剤を製造した。
シンナムタンニンB1の濃度が40μg/mL濃度となるようにした点以外は、実施例1と同様にして誘引剤を製造した。
ペンタガロイルグルコース(SIGMA-ALDRICH社製 型番「G7548」)を94ng/mL濃度となるように溶媒(DMEM)に溶解させ、ペンタガロイルグルコースを含む誘引剤を製造した。
ペンタガロイルグルコースの濃度が0.94μg/mL濃度となるようにした点以外は、実施例4と同様にして誘引剤を製造した。
ペンタガロイルグルコースの濃度が9.4μg/mL濃度となるようにした点以外は、実施例4と同様にして誘引剤を製造した。
ペンタガロイルグルコースの濃度が94μg/mL濃度となるようにした点以外は、実施例4と同様にして誘引剤を製造した。
各実施例の骨髄幹細胞の誘引剤を試験用サンプルとして用意した。これに対し、陰性対照サンプル及び陽性対照サンプルも用意した。
下記において、FBSは、ウシ胎児血清を示している。また、P/Sは、100ユニットペニシリン及び0.1mg/mLストレプトマイシンを示している。また、(-)の記号は、配合していないことを示している。
陰性対照サンプルとしては、DMEM(ダルベッコ変法イーグル培地)「FBS(-)、P/S(-)」を用意した。即ち、FBSもP/Sも含まないDMEMを用意した。
また、陽性対照サンプルとしては、20ng/mL PDGF-BB(血小板由来成長因子 PEPRO TECH社製)濃度のDMEM溶液を用意した。即ち、PDGF-BBを20ng/mLとなるようにDMEMで希釈した溶液を用意した。
一方で、マウス骨髄間葉系幹細胞(以下、mMSCともいう)をコンフルエントまで培養して回収し、該幹細胞を1×107cells/mlとなるように液体に懸濁することにより、細胞懸濁液を用意した。細胞を懸濁するための液体としては、10容量% FBS/DMEM「P/S(-)」を用いた。即ち、該液体としては、FBSを10容量%濃度となるようにDMEMで希釈した、P/Sを含まない液体を用いた。
次に、複数の独立したウェルを備え、図1(a)に示すようにメンブレンMによってウェルが上部ウェルPと下部ウェルQとに仕切られているボイデンチャンバーB(Neuro Probe社製)を用意した。各試験用サンプルのいずれか1種と陰性対照サンプル及び陽性対照サンプルとが同一のボイデンチャンバーBにおいて試験できるように条件を設定し、該チャンバーBの各下部ウェルに各サンプルをそれぞれ28μLずつアプライした。なお、ボイデンチャンバーBのメンブレンMとしては、商品名「Polycarbonate Membranes」(Neuro Probe社製 細孔サイズ8μm)を用いた。
続いて、上部ウェルPに上記細胞懸濁液を50μLずつ播種し、37℃、5%CO2の条件下で4時間の培養を行った(図1(b)を参照)。
4時間培養後、図1(c)に示すように、移動していないmMSCを付属のフィルターワイパーRによってはぎ取った。そして、メンブレンMの下側へ移動したmMSCのみをディフ・クイック染色(Sysmex社製キットを使用)によって染色した。
さらに、染色像をデジタル化してコンピュータに取り込み、画像を黒と白に2値化すべく青色に染色された部分が白色になるように変換した。そして、各ウェル範囲内の輝度の平均値を画像編集ソフトウェア(商品名「フォトショップ」)の機能を用いて測定した。陰性対照サンプルおよび陽性対照サンプルにおける輝度と各試験用サンプルにおける輝度とを比較することにより、骨髄幹細胞の誘引剤のmMSC誘引活性を評価した。
図2及び図3から把握されるように、実施例1、2、7の骨髄幹細胞の誘引剤は、骨髄幹細胞の誘引性能において特に優れている。
マウスの生体において骨髄幹細胞の誘引剤が骨髄幹細胞を誘引する性能を評価するために、マウスの生体を使って以下のようにして実験を行った。なお、マウス生体において創が発生すると、骨髄幹細胞が血流にのって創部分に集まり得る。そして、創部分に集まった骨髄幹細胞がサイトカインを分泌したり、創部分に集まった骨髄幹細胞が創部分の細胞へ分化したりすることにより、創が治癒し得る。従って、創部分に骨髄幹細胞の誘引剤を塗布することにより、創部分に骨髄幹細胞が誘引され、創の治癒が促進されることが予想される。
1.実験材料
1-a.動物
C57BLKs/J-dbm 系の遺伝的糖尿病マウス(BKS.Cg-+ Leprdb/+ Leprdb/Jcl* 、db/db マウス、メス、8週齢)を日本クレア社より6匹購入した。マウスを、水道水と固形飼料とを自由に摂取させつつ1週間以上予備飼育し、その後、9週齢のマウスを試験に供した。
1-b.創傷被覆剤
・ポリウレタン製フィルムドレッシング:製品名「3Mテガダーム トランスペアレントドレッシング1620」6cm×7cm(住友スリーエム社製)
1-c.伸縮性包帯:製品名「シルキーテックス」(アルケア社製)
1-d.被験物質
・塩基性線維芽細胞増殖因子(bFGF) トラフェルミン -陽性対照
製品名「フィブラストスプレー250」(科研製薬社製)
濃度100μg/mL
・リン酸緩衝生理食塩水(PBS)-陰性対照
・シンナムタンニンB1(120μg/mL濃度、40μg/mL濃度)PBS溶液
2.方法
2-a.皮膚全層欠損創の作製
マウスに対する処置は、全てイソフルラン吸入麻酔下で行った。創傷作成の前日に電気バリカンと電気シェーバーとを用いて、マウスを剪毛した。
背部皮膚を消毒用エタノールで清拭し、外科用はさみを用いて背部中央部に円形(φ1.5cm)の皮膚全層欠損創を作製した。
2-b.被験物質の投与
皮膚切除後、bFGF(トラフェルミン)、PBS、又は、シンナムタンニンB1を創面にサイト当たり20μL滴下投与した。投与は、1つの投与群あたり3匹を用いて行った。
投与後、創面を上記のポリウレタン製フィルムドレッシングにより密封し、その上から上記の伸縮性包帯を巻いた。被覆剤の交換、及び、被験物質の投与は、週に3回、4週間にわたって実施した。そして、創作製約60日後まで被覆剤の交換を週に1回行った。上皮が形成された後においては、被覆剤の貼付を行わなかった。
2-c.観察
・創面積測定:週3回、4週間背部を写真撮影し、イメージをPCに取り込み、画像解析ソフト(製品名「Image J」)で創の面積を測定した。その後、創の面積を、創作製約60日後まで、週1回測定した。
図4から把握できるように、シンナムタンニンB1を含む骨髄幹細胞の誘引剤によって、創部分に骨髄幹細胞が誘引され、創の治癒が促進されたと考えられる。
Claims (2)
- シンナムタンニンB1、及び、ペンタガロイルグルコースのうちの少なくとも1種を含むことを特徴とする骨髄幹細胞の誘引剤。
- シンナムタンニンB1、及び、ペンタガロイルグルコースのうちの少なくとも1種を含む骨髄幹細胞の誘引剤によって骨髄幹細胞を誘引することを特徴とする骨髄幹細胞の誘引方法。
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