Science:长期体外胚胎培养揭示灵长类动物早期发育过程

2019-11-05 海北 MedSci原创

最近,我国科研人员建立了一个培养系统,能够在长达20天的时间内,在体外培养发育食蟹猴的胚胎。

在哺乳动物发育过程中,从胚胎植入到原肠胚形成的转变需要将谱系祖细胞的特化安排到身体组建计划中。由于技术和道德的挑战,我们对这种转变背后的细胞和分子机制了解还十分有限。

最近,我国科研人员建立了一个培养系统,能够在长达20天的时间内,在体外培养发育食蟹猴的胚胎

体外培养的胚胎经历了重要的灵长类动物发育阶段,包括谱系分离,双层胚盘形成,羊膜和卵黄囊空化,以及原始生殖细胞样细胞(PGCLC)分化。

单细胞RNA测序分析揭示了原始内胚层,滋养外胚层,外胚层细胞谱系和PGCLC的发育轨迹。分析单细胞染色质可及性可识别每种细胞类型的特异性转录因子。

因此,这些结果揭示了在植入后早期,非人类灵长类动物胚胎发生的关键发育事件,以及潜在的复杂分子机制。这也与人类发育存在可能的相关性。


原始出处:

Yuyu Niu et al. Dissecting primate early post-implantation development using long-term in vitro embryo culture. Science, 2019; DOI: 10.1126/science.aaw5754


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    2020-01-03 lg.zhao
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    2019-11-07 ailian1202
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    2019-11-07 neurowu
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    2019-11-07 jichang