JP5162756B2 - 医薬組成物及びその製造方法 - Google Patents
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- C12N5/00—Undifferentiated human, animal or plant cells, e.g. cell lines; Tissues; Cultivation or maintenance thereof; Culture media therefor
- C12N5/06—Animal cells or tissues; Human cells or tissues
- C12N5/0602—Vertebrate cells
- C12N5/0652—Cells of skeletal and connective tissues; Mesenchyme
- C12N5/0662—Stem cells
- C12N5/0663—Bone marrow mesenchymal stem cells (BM-MSC)
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Description
Lopez AD, Murray CC, 1990-2020. Nat Med. 1998;4:1241-1243 Michaud CM, Murray CJ, JAMA. 2001;285:535-539 American Thoracic Society. Standards for the diagnosis and care of patients with chronic obstructive pulmonary disease. Am J Respir Crit Care Med. 1995;152:S77-S121 Barnes PJ, N Engl J Med 2000;343:269-280 Ishizawa K, et al., FEBS Lett. 2004;556:249-252 Pittenger MF, et al., Science. 1999;284:143-147 Reyes M, et al., J Clin Invest. 2002;109:337-346 Toma C, et al., 2002;105: 93-98. Nagaya N, et al, Am J Physiol Heart Circ Physiol. 2004;287:H2670-H2676 Ortiz LA, et al., Proc Natl Acad Sci U S A. 2003;100:8407-8411 Wang G, et al., Proc Natl Acad Sci U S A. 2005;102:186-191
骨髄MSCの培養
MSCは先に記載されている方法にしたがって増殖させた(Pittenger MF, et al., Science. 1999;284:143-147)。簡単には,雄Lewisラットおよびグリーン蛍光蛋白質(GFP)を発現するトランスジェニックラットを犠牲死させ,大腿腔および脛骨腔をリン酸緩衝化食塩水(PBS)でフラッシングすることにより骨髄を回収した。骨髄細胞を100mmのディッシュに加え,10%FBSおよび抗生物質を補充したα−MEM中で培養した。培養第5−7日までに目に見える対称のコロニーが形成された。非接着性の造血細胞を除去し,培地を交換した。接着した紡錘形状のMSC集団は,細胞を最初に播種してから約4−5代以内の継代で5000万個以上に増殖した。
この実験では,体重180−210gの雄Lewisラット(Charles River Japan Inc.)を用いた。これらと同系のラットをMSCのドナーおよびレシピエントとして用いて,自己移植を模倣した。肺気腫は,ブタ膵臓エラスターゼ(600ユニット/kg;Sigma, St.Louis, MO)の気管内注入により生成させた。この実験プロトコルはThe Animal Care Committee of the National Cardiovascular Centerにより承認されたものである。
エラスターゼ注入の7日後,1.5x106MSC/500μLのPBSまたは500μLのPBSのみをラットの左頸静脈から静脈内投与した。擬似ラットにも500μLのPBSを静脈内投与した。
免疫蛍光染色は,マウス抗サイトケラチン5および8モノクローナル抗体(Chemicon)(上皮細胞のマーカー);ヤギ抗SP−Aポリクローナル抗体(Santa Cruz)(肺胞上皮細胞のマーカー);およびウサギ抗フォンビルブラント因子(vWF)ポリクローナル抗体(DAKO)(血管内皮細胞のマーカー)を用いて行った。フルオレセインイソチオシアネート(FITC)コンジュゲート化IgG抗体(BD Pharmingen)を二次抗体として用いた。
数値は特に記載しない限り平均±sem.で表す。3群間のパラメータの比較は,一元分散分析(ANOVA),続いてシェフ(Scheffe)多重比較検定により分析した。3群間のパラメータの変化の比較は,反復測定用二元ANOVA,続いてシェフ多重比較検定により行った。P<0.05を有意であると考えた。
肺胞上皮細胞との共培養における上皮分化および肺胞形成
MSCが上皮様表現型に分化するか否かを調べるために,GFPを発現するMSCを,成熟肺胞上皮細胞とともに4日間共培養した。最初に,ヒト成熟肺胞上皮細胞(A549)を播種し,10%FBSおよび抗生物質を補充したF−12K中で培養した。1日間培養した後,GFPを発現するMSCを肺胞上皮細胞上に1:1の比率で播種した。細胞は,10%FBSおよび抗生物質を補充したF−12K中で4日間共培養した。次に,細胞を4%パラホルムアルデヒドで15分間固定した。
5匹のエラスターゼ処置ラットを用いて,移植されたMSCの肺における取り込みおよび分化を調べた。先に報告されているようにして(Messina LM, et al, Proc Natl Acad Sci USA. 1992;89:12018-12022),移植前に,懸濁したMSCをPKH26 Red Fluorescent Cell Linker Kit(SigmaChemical Co.)を用いて蛍光色素で標識した。エラスターゼ注入の7日後に蛍光標識MSCを静脈内投与し,エラスターゼ注入の4週間後にラットを犠牲死させた。肺を摘出し,サンプルをOCT化合物中に埋包し,液体窒素中で急速に凍結し,切片を作成した。
エラスターゼ処置ラットにMSCを静脈内移植し,エラスターゼ注入の4週間後にラットを犠牲死させ,右肺(各n=5)からパラフィン切片を調製した。MSCの移植がエラスターゼ処置肺において血管新生を誘導するか否かを調べるため,組織切片をvWF(DAKO)について染色して,血管密度を評価した。肺胞数およびvWF陽性毛細管(直径100μm未満)の数は,無作為に選択した10高出力視野(x200)で計数した。毛細管密度は,100個の肺胞あたりの毛細管の数として表した。
MSCが血管新生,抗アポトーシス,および成長因子を産生するか否かを調べるため,培地交換の24時間後にコンディションド培地中のVEGFおよび幹細胞成長因子(HGF)を測定した。VEGFおよびHGFは,酵素イムノアッセイ(VEGF Immunoassay R&D Systems Inc.; rat HGF EIA,Institute of Immunology Co.,Ltd.)により測定した。MSCまたはベヒクルの投与の前および24時間後にVEGFおよびHGFのインビボでの循環レベルを測定した(各群n=6)。
ラットにおいてエラスターゼ誘起性肺気腫に及ぼすMSCの静脈内投与の効果を調べるために,以下の3つの実験群を作製した:MSCを与えたエラスターゼラット(エラスターゼ/MSC群,n=11);PBSを与えたエラスターゼラット(エラスターゼ群,n=11);培地を与えた擬似ラット(擬似群,n=11)。
Claims (4)
- 造血幹細胞を含まずに間葉系幹細胞を含有する,肺気腫を治療するための医薬組成物。
- 造血幹細胞を含まずに間葉系幹細胞を含有する,肺気腫における肺胞の再生を促進するための医薬組成物。
- 造血幹細胞を含まずに間葉系幹細胞を含有する,肺気腫における毛管の血管新生を促進するための医薬組成物。
- 患者から採取した間葉系幹細胞を培養することを含む,請求項1−3のいずれかに記載の医薬組成物の製造方法。
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PCT/JP2006/307857 WO2006112365A1 (ja) | 2005-04-14 | 2006-04-13 | 間葉系幹細胞を用いる肺気腫の治療 |
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US20080095749A1 (en) * | 2004-03-22 | 2008-04-24 | Sudeepta Aggarwal | Mesenchymal stem cells and uses therefor |
CA2705450A1 (en) * | 2006-04-27 | 2007-11-08 | Cell Therapy Technologies, Inc. Et Al | Stem cells for treating lung diseases |
US9950032B2 (en) * | 2011-10-27 | 2018-04-24 | Agency For Science, Technology And Research (A*Star) | Compositions and methods for lung regeneration |
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JP7217533B2 (ja) * | 2018-01-24 | 2023-02-03 | 学校法人順天堂大学 | 間葉系幹細胞による処置の効果を増幅するための組成物 |
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JPN6012002300; 池原進: '自己免疫疾患における造血幹細胞移植' 月刊リウマチ科 Vol.32,No.4, 20041028, p.425-427 * |
JPN6012002301; 池原進: '自己免疫疾患における再生医療としての造血細胞移植' 炎症・再生 Vol.23, No.2, 2003, p.110-115 * |
JPN6012002302; 久保裕司: '幹細胞・前駆細胞と肺疾患-治療へのinterventionは可能か?-骨髄由来前駆細胞の破綻と肺疾患' 分子呼吸器病 Vol.8, No.5, 20040901, p.377-382 * |
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