JP6151097B2 - 腸構造体を分化誘導する方法 - Google Patents
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Description
(1)胚性幹細胞及び/又は人工多能性幹細胞から腸構造体を作製する方法であって、
基材と、基材上に形成された複数の隔離された細胞接着領域及び各細胞接着領域を囲む細胞非接着領域とを備える細胞培養基材を準備する工程、
胚性幹細胞及び/又は人工多能性幹細胞を、細胞培養基材に対し播種する工程、及び
播種した胚性幹細胞及び/又は人工多能性幹細胞を培地中で培養する工程、
を含み、
細胞培養基材の細胞非接着領域が、ポリエチレングリコールが基材上に固定化されて形成されたものであり、細胞接着領域が基材上に固定化されたポリエチレングリコールの少なくとも一部が酸化及び/又は分解されて形成されたものであり、各細胞接着領域の面積が0.785mm2より大きい、前記方法。
(2)細胞接着領域が、直径1.2mm〜6mmの円形の形状で形成されている、(1)記載の方法。
(3)胚性幹細胞及び/又は人工多能性幹細胞を播種後60日以上培養する、(1)又は(2)記載の方法。
(4)細胞接着領域が、基材上に固定化されたポリエチレングリコールが紫外線照射により酸化されて形成されたものである、(1)〜(3)のいずれかに記載の方法。
−((CH2)2−O)m−
(mは重合度を示す整数である)
で表される構造を指す。mは、好ましくは1〜13の整数であり、より好ましくは1〜10の整数である。
(i)Oct遺伝子、Klf遺伝子、Sox遺伝子、Myc遺伝子
(ii)Oct遺伝子、Sox遺伝子、NANOG遺伝子、LIN28遺伝子
(iii)Oct遺伝子、Klf遺伝子、Sox遺伝子、Myc遺伝子、hTERT遺伝子、SV40 largeT遺伝子
(iv)Oct遺伝子、Klf遺伝子、Sox遺伝子
トルエン39.0g、メタクリロイルシランTSL8370(GE東芝シリコーン製)13.5gを混合し、攪拌しながらトリエチルアミンを450μl添加した。そのまま室温で数分間攪拌してから、全量をガラス皿へ移した。ここにUV洗浄済みの5cm角のガラス基板を浸漬し、室温で16時間放置した。その後、ガラス基板をエタノールと水で洗浄し、窒素ブローで乾燥させた。これによりガラス基板表面にメタクリロイル基を含む薄膜が形成された。
実施例1で作製した細胞培養基材のうち、直径2.0mmの円形の細胞接着領域のパターンを有するものにヒトiPS細胞又はヒトES細胞を播種し、細胞が未分化のまま接着することを検証した。以下その詳細を記載する。
月経血から取得した細胞に山中4因子をセンダイウイルスベクターによって一過的に発現させてヒトiPS細胞を樹立した(PLoS Genet. 2011 May; 7(5): e1002085. Published online 2011 May 26. doi: 10.1371/journal.pgen.1002085PMCID: PMC3102737)。
実施例1で作製した細胞培養基材のうち、直径1.5mmの円形の細胞接着領域のパターンを有するものにMRC5iPS細胞又はEdomiPS細胞を播種し、90日間分化誘導した後、実施例3と同様に切片を取得し、腸のマーカーとなる抗体で免疫染色した。その結果、腸の分化マーカーであるVillin及び5THが検出された。また、蠕動運動様の動きも観察された。
Claims (4)
- 胚性幹細胞及び/又は人工多能性幹細胞から腸構造体を作製する方法であって、
基材と、基材上に形成された複数の隔離された細胞接着領域及び各細胞接着領域を囲む細胞非接着領域とを備える細胞培養基材を準備する工程、
胚性幹細胞及び/又は人工多能性幹細胞を、細胞培養基材に対し播種する工程、及び
播種した胚性幹細胞及び/又は人工多能性幹細胞を培地中で培養する工程、
を含み、
細胞培養基材の細胞非接着領域が、ポリエチレングリコールが基材上に固定化されて形成されたものであり、細胞接着領域が基材上に固定化されたポリエチレングリコールの少なくとも一部が酸化及び/又は分解されて形成されたものであり、各細胞接着領域の面積が0.785mm2より大きい、前記方法。 - 細胞接着領域が、直径1.2mm〜6mmの円形の形状で形成されている、請求項1記載の方法。
- 胚性幹細胞及び/又は人工多能性幹細胞を播種後60日以上培養する、請求項1又は2記載の方法。
- 細胞接着領域が、基材上に固定化されたポリエチレングリコールが紫外線照射により酸化されて形成されたものである、請求項1〜3のいずれか1項記載の方法。
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