JP5411582B2 - Adamts13による細胞移植増強補助剤 - Google Patents
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Description
したがって、本願発明は、以下を包含する。
[1]フォンビルブランド因子切断活性を有するペプチドを細胞移植補助剤として使用する方法。
[2]ペプチドがADAMTSファミリータンパク質であることを特徴とする、[1]に記載の方法。
[3]ADAMTSファミリータンパク質がADAMTS13であることを特徴とする、[2]に記載の方法。
[4]ペプチドが、配列番号1の第1位のメチオニンから第688位のトリプトファンのアミノ酸配列であることを特徴とする、[1]記載の方法。
[5]ペプチドが、遺伝子組換え技術により得られたものであることを特徴とする、[1]ないし[4]のいずれか一項に記載の方法。
[6]ペプチドが、化学修飾により得られた改変体であることを特徴とする、[1]ないし[5]のいずれか一項に記載の方法。
[7]細胞が、肝細胞、膵島細胞、心筋細胞、造血幹細胞、間葉系幹細胞、胚性幹細胞(ES細胞、Embryonic stem cell)、人工多能性幹細胞(iPS細胞、induced pluripotent stem cell)及び上記の細胞から誘導される細胞からなる群より選択されることを特徴とする、[1]ないし[6]のいずれか一項に記載の方法。
[8]フォンビルブランド因子切断活性を有するペプチドを有効成分として含有する細胞移植補助剤。
[9]ペプチドがADAMTSファミリータンパク質であることを特徴とする、[8]に記載の細胞移植補助剤。
[10]ADAMTSファミリータンパク質がADAMTS13であることを特徴とする、[9]記載の細胞移植補助剤。
[11]ペプチドが、配列番号1の第1位のメチオニンから第688位のトリプトファンのアミノ酸配列であることを特徴とする、[8]記載の細胞移植補助剤。
[12]ペプチドが、遺伝子組換え技術により得られたものであることを特徴とする、[8]ないし[11]のいずれか一項に記載の細胞移植補助剤。
[13]ペプチドが、化学修飾により得られた改変体であることを特徴とする、[8]ないし[12]のいずれか一項に記載の細胞移植補助剤。
[14]細胞が、肝細胞、膵島細胞、心筋細胞、造血幹細胞、間葉系幹細胞、胚性幹細胞(ES細胞、Embryonic stem cell)、人工多能性幹細胞(iPS細胞、induced pluripotent stem cell)及び上記の細胞から誘導される細胞からなる群より選択されることを特徴とする、[8]ないし[13]のいずれか一項に記載の細胞移植補助剤。
[15]細胞にフォンビルブランド因子切断活性を有するペプチドを添加する工程を含む、移植用細胞の製造法。
[16]ペプチドがADAMTS13ファミリータンパク質であることを特徴とする、[15]に記載の製造法。
[17]ADAMTSファミリータンパク質がADAMTS13であることを特徴とする、[16]に記載の製造法。
[18]ペプチドが、配列番号1の第1位のメチオニンから第688位のトリプトファンのアミノ酸配列であることを特徴とする、[15]記載の製造法。
[19]ペプチドが、遺伝子組換え技術により得られたものであることを特徴とする、[15]ないし[18]のいずれか一項に記載の製造法。
[20]ペプチドが、化学修飾により得られた改変体であることを特徴とする、[15]ないし[19]のいずれか一項に記載の製造法。
[21]細胞が、肝細胞、膵島細胞、心筋細胞、造血幹細胞、間葉系幹細胞、胚性幹細胞(ES細胞、Embryonic stem cell)、人工多能性幹細胞(iPS細胞、induced pluripotent stem cell)及び上記の細胞から誘導される細胞からなる群より選択されることを特徴とする、[15]ないし[20]のいずれか一項に記載の製造法。
1)ADAMTS13の持つメタロプロテアーゼ作用により、肝臓内の細胞外基質が溶解され、移植肝細胞が効率的に血管内から肝臓実質へ移行できるようになったことにより、生着細胞数が増加した。
2)移植細胞周囲の微量血栓形成が抑制されたことにより、排除される細胞数が減少し、ひいては生着する細胞数が増加した。
3)微小循環障害が抑制されたことにより、移植細胞への栄養供給路が確保され、生着率が上昇した。などの機序が考えられる。
Claims (4)
- ADAMTS13を有効成分として含有する細胞移植補助剤。
- 細胞が、肝細胞、膵島細胞、心筋細胞、造血幹細胞、間葉系幹細胞、胚性幹細胞(ES細胞、Embryonic stem cell)、人工多能性幹細胞(iPS細胞、induced pluripotent stem cell)及び上記の細胞から誘導される細胞からなる群より選択されることを特徴とする、請求項1に記載の細胞移植補助剤。
- 細胞にADAMTS13を添加する工程を含む、移植用細胞の製造方法。
- 細胞が、肝細胞、膵島細胞、心筋細胞、造血幹細胞、間葉系幹細胞、胚性幹細胞(ES細胞、Embryonic stem cell)、人工多能性幹細胞(iPS細胞、induced pluripotent stem cell)及び上記の細胞から誘導される細胞からなる群より選択されることを特徴とする、請求項3に記載の製造法。
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