JP7039473B2 - 分化細胞の製造方法、及びその製造方法のために使用する培養バッグ - Google Patents
分化細胞の製造方法、及びその製造方法のために使用する培養バッグ Download PDFInfo
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- JP7039473B2 JP7039473B2 JP2018530441A JP2018530441A JP7039473B2 JP 7039473 B2 JP7039473 B2 JP 7039473B2 JP 2018530441 A JP2018530441 A JP 2018530441A JP 2018530441 A JP2018530441 A JP 2018530441A JP 7039473 B2 JP7039473 B2 JP 7039473B2
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Description
多能性幹細胞から胚様体(EB)法により分化細胞を製造する方法であって、
(1)パーフルオロポリマーを内側表面に有する培養バッグを用いて多能性幹細胞を培養することにより胚様体を形成する工程、及び
(2)前記工程(1)において得られた胚様体に含まれる多能性幹細胞を分化誘導させることにより分化細胞を得る工程
を含む、方法。
項2.
多能性幹細胞を胚様体(EB)法により分化誘導する方法であって、
(1)パーフルオロポリマーを内側表面に有する培養バッグを用いて多能性幹細胞を培養することにより胚様体を形成する工程、及び
(2)前記工程(1)において得られた胚様体に含まれる多能性幹細胞を分化誘導させる工程
を含む、方法。
項3.
前記パーフルオロポリマーが、テトラフルオロエチレン/ヘキサフルオロプロピレン共重合体、テトラフルオロエチレン/パーフルオロアルキルビニルエーテル共重合体及びテトラフルオロエチレン/ヘキサフルオロプロピレン/パーフルオロアルキルビニルエーテル共重合体からなる群より選択される少なくとも一種のパーフルオロポリマーである、項1又は2に記載の方法。
項4.
多能性幹細胞が、人工多能性幹細胞(iPS細胞)又は胚性幹細胞(ES細胞)である、項1~3のいずれか一項に記載の方法。
項5.
前記工程(2)において、多能性幹細胞を前駆細胞へと分化誘導させる、項1~4のいずれか一項に記載の方法。
項6.
パーフルオロポリマーを内側表面に有する培養バッグであって、多能性幹細胞を胚様体(EB)法により分化誘導するために用いられる、培養バッグ。
項7.
前記パーフルオロポリマーが、テトラフルオロエチレン/ヘキサフルオロプロピレン共重合体、テトラフルオロエチレン/パーフルオロアルキルビニルエーテル共重合体及びテトラフルオロエチレン/ヘキサフルオロプロピレン/パーフルオロアルキルビニルエーテル共重合体からなる群より選択される少なくとも一種のパーフルオロポリマーである、項6に記載の培養バッグ。
項8.
多能性幹細胞が、人工多能性幹細胞(iPS細胞)又は胚性幹細胞(ES細胞)である、項6又は7に記載の培養バッグ。
項9.
項1~4のいずれか一項に記載の工程(1)により得られうる、胚様体。
項10.
項1及び3~5のいずれか一項に記載の製造方法により得られうる、分化細胞集団。
本発明の分化細胞の製造方法は、多能性幹細胞から胚様体(EB)法により分化細胞を製造する方法であって、
(1)パーフルオロポリマーを内側表面に有する培養バッグを用いて多能性幹細胞を培養することにより胚様体を形成する工程、及び
(2)前記工程(1)において得られた胚様体に含まれる多能性幹細胞を分化誘導させる工程
を含む、方法である。
1.1.1 培養バッグ
培養バッグは、パーフルオロポリマーを内側表面に有する培養バッグであり、培養時に培養細胞が接触しうる表面が、少なくともパーフルオロポリマーで覆われている。これにより、培養バッグ表面に多能性幹細胞が付着しにくく、胚様体が正常に形成されうる。
多能性幹細胞としては、特に限定されず、未分化状態を保持したまま増殖できるという意味での自己再生能と、三胚葉系列すべてに分化できるという意味での分化多能性(pluripotency)、とを兼ね備える未分化細胞を使用できる。
培養条件は、特に限定されず、通常のEB法に準じて行うことができ、適宜改変を行ってもよい。
工程(2)は、前記工程(1)において得られた胚様体に含まれる多能性幹細胞を分化誘導させることにより分化細胞を得る工程である。
本発明の胚様体は、本発明の製造方法の工程(1)により得られうる、胚様体である。
材質として、FEP及びPFAをそれぞれ用い、これらのペレットを溶融成形することにより、それぞれのフィルムを得た。
l:吸光度
k:補正係数(表1)
t:サンプルの厚さ(mm)
(1)EBの作成
Matrigel(Corning Life Sciences)でコーティングしたプラスチックプレート(BD Biosciences)で、T-iPS細胞を培養した。
培養開始時の細胞数については、5×105/バッグのときのほうが、5×106/バッグのときよりも、造血前駆細胞の収量がより高かった。
上記の実験でソートして得られたCD34+細胞のT細胞への分化誘導能を、先述の公知文献Nishimuraに記載の方法に準じて確認した。
11 ポート
12 シール部
Claims (6)
- 多能性幹細胞から胚様体(EB)法により分化細胞を製造する方法であって、
(1)パーフルオロポリマーを内側表面に有する培養バッグを用いて多能性幹細胞を培養することにより胚様体を形成する工程、及び
(2)前記工程(1)において得られた胚様体に含まれる多能性幹細胞を分化誘導させることにより分化細胞を得る工程
を含み、かつ
前記パーフルオロポリマーが、テトラフルオロエチレン/ヘキサフルオロプロピレン共重合体、テトラフルオロエチレン/パーフルオロアルキルビニルエーテル共重合体及びテトラフルオロエチレン/ヘキサフルオロプロピレン/パーフルオロアルキルビニルエーテル共重合体からなる群より選択される少なくとも一種のパーフルオロポリマーである、
方法。 - 多能性幹細胞を胚様体(EB)法により分化誘導する方法であって、
(1)パーフルオロポリマーを内側表面に有する培養バッグを用いて多能性幹細胞を培養することにより胚様体を形成する工程、及び
(2)前記工程(1)において得られた胚様体に含まれる多能性幹細胞を分化誘導させる工程
を含み、かつ
前記パーフルオロポリマーが、テトラフルオロエチレン/ヘキサフルオロプロピレン共重合体、テトラフルオロエチレン/パーフルオロアルキルビニルエーテル共重合体及びテトラフルオロエチレン/ヘキサフルオロプロピレン/パーフルオロアルキルビニルエーテル共重合体からなる群より選択される少なくとも一種のパーフルオロポリマーである、方法。 - 多能性幹細胞が、人工多能性幹細胞(iPS細胞)又は胚性幹細胞(ES細胞)である、請求項1又は2に記載の方法。
- 前記工程(2)において、多能性幹細胞を前駆細胞へと分化誘導させる、請求項1~3のいずれか一項に記載の方法。
- パーフルオロポリマーを内側表面に有する培養バッグであって、多能性幹細胞を胚様体(EB)法により分化誘導するために用いられ、かつ
前記パーフルオロポリマーが、テトラフルオロエチレン/ヘキサフルオロプロピレン共重合体、テトラフルオロエチレン/パーフルオロアルキルビニルエーテル共重合体及びテトラフルオロエチレン/ヘキサフルオロプロピレン/パーフルオロアルキルビニルエーテル共重合体からなる群より選択される少なくとも一種のパーフルオロポリマーである、
培養バッグ。 - 多能性幹細胞が、人工多能性幹細胞(iPS細胞)又は胚性幹細胞(ES細胞)である、請求項5に記載の培養バッグ。
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