1120-eIF4G2介导的翻译控制保障成年肠道干细胞身份 episode artwork

EPISODE · Jun 12, 2026 · 16 MIN

1120-eIF4G2介导的翻译控制保障成年肠道干细胞身份

from 聊聊Sci

这份研究揭示了翻译因子 eIF4G2 在维持成年肠道稳态中的核心作用。研究通过诱导型基因敲除模型发现,缺失 eIF4G2 会导致成年肠道干细胞身份丧失,并使肠上皮细胞转化为一种持久的胎儿样再生状态。这种转变是由 KAT3 染色质调节因子的翻译效率下降引起的,进而引发了全局组蛋白乙酰化减少和表观遗传重塑。实验结果表明,eIF4G2 通过精准调控特定表观遗传因子的蛋白质合成,确保了成年肠道细胞的正常分化并防止其异常逆转。总而言之,该研究阐明了翻译控制与表观遗传景观之间如何协同工作,以保护成年组织的细胞身份。References:Kunitomi H, Khaine A M, Jamee R, et al. eIF4G2-mediated selective translation of chromatin regulators safeguards adult intestinal stem cell identity and differentiation[J]. Cell Stem Cell, 2026.前往小宇宙评论区与主播互动

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1120-eIF4G2介导的翻译控制保障成年肠道干细胞身份

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