An ES-like pluripotent state in FGF-dependent murine iPS cells.

An ES-like pluripotent state in FGF-dependent murine iPS cells.
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依赖FGF的鼠IPS细胞中的ES样多能状态。

DOI:
10.1371/journal.pone.0016092
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发表时间:
2010-12-30
期刊:
影响因子:
3.7
通讯作者:
Broccoli V
Broccoli V
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Di Stefano B;Buecker C;Ungaro F;Prigione A;Chen HH;Welling M;Eijpe M;Mostoslavsky G;Tesar P;Adjaye J;Geijsen N;Broccoli V

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最近的数据表明,干细胞可以存在于两种形态,分子和功能上不同的多能状态;幼稚LIF依赖性多能状态,以小鼠胚胎干细胞(mESC)为代表,FGF依赖性致敏多能状态,以小鼠和大鼠上胚层干细胞(EpiSC)为代表。我们发现,在EpiSC培养条件下诱导多能干细胞(iPSC)的衍生产生了FGF依赖性iPSC(称为FGF-iPSC),其出乎意料地显示出幼稚ES样/ICM特性。FGF-iPSC在体内显示X染色体活化、多谱系分化、畸胎瘤能力和嵌合体贡献。我们的研究结果表明,在129和B16小鼠品系中,无论培养生长因子条件如何,iPSC都可以主要采用幼稚多能状态。关键分子信号传导途径的表征揭示了FGF-iPSC依赖于激活素/Nodal和FGF途径,而通过JAK-STAT途径的信号传导对于FGF-iPS细胞维持是不需要的。我们的研究结果表明,在129和B16小鼠品系中,无论培养生长因子条件如何,iPSC都可以主要采用幼稚多能状态。
Recent data demonstrates that stem cells can exist in two morphologically, molecularly and functionally distinct pluripotent states; a naïve LIF-dependent pluripotent state which is represented by murine embryonic stem cells (mESCs) and an FGF-dependent primed pluripotent state represented by murine and rat epiblast stem cells (EpiSCs). We find that derivation of induced pluripotent stem cells (iPSCs) under EpiSC culture conditions yields FGF-dependent iPSCs from hereon called FGF-iPSCs) which, unexpectedly, display naïve ES-like/ICM properties. FGF-iPSCs display X-chromosome activation, multi-lineage differentiation, teratoma competence and chimera contribution in vivo. Our findings suggest that in 129 and Bl6 mouse strains, iPSCs can dominantly adopt a naive pluripotent state regardless of culture growth factor conditions. Characterization of the key molecular signalling pathways revealed FGF-iPSCs to depend on the Activin/Nodal and FGF pathways, while signalling through the JAK-STAT pathway is not required for FGF-iPS cell maintenance. Our findings suggest that in 129 and Bl6 mouse strains, iPSCs can dominantly adopt a naive pluripotent state regardless of culture growth factor conditions.
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