JP6636427B2 - 小分子を用いるヒト多能性幹細胞からの内分泌始原細胞の作製 - Google Patents
小分子を用いるヒト多能性幹細胞からの内分泌始原細胞の作製 Download PDFInfo
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Description
実施形態1:NGN3/NKX2.2二重陽性内分泌始原細胞を得るための方法であって、膵臓内胚葉細胞を含む細胞集団が、
基本培地中で、
TGF-βI型受容体阻害薬、及び
BMP拮抗薬、及び
アデニル酸シクラーゼ活性化物質、及び
ニコチンアミド
に曝露される、方法。
DAPT:ジフルオロフェニルアセチル-アラニル-フェニルグリシン-t-ブチル-エステル
DMBI:(Z)-3-[4-(ジメチルアミノ)ベンジリデニル]インドリン-2-オン
CompE:化合物E
DE:胚体内胚葉
DEF-CS:DEF培養系
DNA-Pki:DNA-PK阻害薬V
EP:内分泌始原細胞
hBS:ヒト胚盤胞由来幹
hES:ヒト胚性幹
hESC:ヒト胚性幹細胞
hiPS:ヒト誘導多能性幹
HSC:造血幹細胞
iPS:誘導多能性幹
iPSC:誘導多能性幹細胞
KOSR:KnockOut(商標)血清代替物
PE:膵臓内胚葉
PEST:ペニシリンストレプトマイシン
SC:幹細胞
Rockout:Rhoキナーゼ阻害薬III
hES細胞(DEF-hES SA121)又はiPS細胞(DEF-CHiPS2)を、30ng/mlのbFGF(Peprotech社 #100-18B)及び10ng/mlのノギン(Peprotech社 #120-10C)を補充したDEF培地(Cellectis社)中で培養した。DEF培地又はDEF-CS培地/系は、ヒト多能性幹細胞の確立及び増殖のための規定の平衡培地、DEF-CS培地/系である。
実施例1により得られたPE細胞を、RPMI1640,0.1% PEST及び2% B27中、6μMのSB4311542(Sigma社 #S4317)、50ng/mlのノギン(Peprotech社 #120-10c)、10μMのホルスコリン(Sigma社 #F6886)及び10mMのニコチンアミド(Calbiochem社 #481907)で3日間分化させた。分化の間に、培地を毎日交換して、細胞を加湿インキュベータ内で37℃及び5%のCO2にて維持した。
実施例2による方法を、それぞれKunisadaら(2011年)(プロトコルK)及びNostroら(2012年)(プロトコルN)に記載されている方法と比較した。
実施例1により得られたPE細胞を、RPMI1640,0.1% PEST及び2% B27中、10μMのホルスコリン(Sigma社 #F6886)及び10mMのニコチンアミド(Calbiochem社 #481907)で3日間分化させた。分化の間に、培地を毎日交換して、細胞を加湿インキュベータ内で37℃及び5%のCO2にて維持した。
実施例1により得られたPE細胞を、RPMI1640,0.1% PEST及び2% B27中、6μMのSB4311542(Sigma社 #S4317)及び50ng/mlのノギン(Peprotech社 #120-10c)で3日間分化させた。分化の間に、培地を毎日交換して、細胞を加湿インキュベータ内で37℃及び5%のCO2にて維持した。
プロトコルK及びプロトコルN並びに組み合わせプロトコルK&N(実施例2)による3日間のEP分化に応答する内分泌始原細胞マーカーNGN3についての相対的遺伝子発現レベル。遺伝子発現は、基本培地中で分化させた培養物中に存在する発現(1に設定した)に対するものとして示した。
特定の分子のPEのEPへの分化を誘導し且つ増加させるための能力を、以下の条件下で試験した。
table 3(表3)の特定の分子及びこの組み合わせのPEのEPへの分化を誘導し且つ増加させるための能力を、以下の条件下で試験した。
Claims (14)
- NGN3/NKX2.2二重陽性内分泌始原細胞を得るための方法であって、膵臓内胚葉細胞を含む細胞集団が、基本培地中で、
a)TGF-βI型受容体阻害薬、
b)ノギンであるBMP拮抗薬、
c)アデニル酸シクラーゼ活性化物質、及び
d)ニコチンアミド
に同時に曝露される、方法。 - 前記TGF-βI型受容体阻害薬が、SB431542である、請求項1に記載の方法。
- 前記アデニル酸シクラーゼ活性化物質が、ホルスコリンである、請求項1又は2に記載の方法。
- 前記内分泌始原細胞が、少なくとも8%の作用率でNGN3/NKX2.2二重陽性である、請求項1〜3のいずれか一項に記載の方法。
- 前記内分泌始原細胞が、少なくとも10%の作用率でNGN3/NKX2.2二重陽性である、請求項1〜3のいずれか一項に記載の方法。
- 前記内分泌始原細胞が、10〜100%の作用率でNGN3/NKX2.2二重陽性である、請求項1〜3のいずれか一項に記載の方法。
- 前記基本培地がRPMI1640である、請求項1〜6のいずれか一項に記載の方法。
- 内分泌始原細胞が、DNA-PK阻害薬V、ゲフィチニブ、JNK阻害薬VIII若しくはDAPT又は前記分子の任意の組み合わせに更に曝露される、請求項1〜7のいずれか一項に記載の方法。
- ゲフィチニブ、JNK阻害薬VIII及びDNA-PK阻害薬Vが組み合わされる、請求項1〜7のいずれか一項に記載の方法。
- ゲフィチニブ、JNK阻害薬VIII及びDAPTが組み合わされる、請求項1〜7のいずれか一項に記載の方法。
- ゲフィチニブ、JNK阻害薬VIII、DAPT及びDNA-PK阻害薬Vが組み合わされる、請求項1〜7のいずれか一項に記載の方法。
- 1〜100μMのゲフィチニブ、1〜100μMのJNK阻害薬VIII、0.5〜50μMのDAPT及び1〜100μMのDNA-PK阻害薬Vが用いられる、請求項1〜7のいずれか一項に記載の方法。
- 1〜10μMのゲフィチニブ、5〜20μMのJNK阻害薬VIII、1〜10μMのDAPT及び1〜10μMのDNA-PK阻害薬Vが用いられる、請求項8〜12のいずれか一項に記載の方法。
- TGF-βI型受容体阻害薬、アデニル酸シクラーゼ活性化物質及びニコチンアミドと組み合わせて膵臓内胚葉細胞からNGN3/NKX2.2二重陽性内分泌始原細胞を誘導するための剤であって、ノギンを含む剤。
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