低度通过重塑细胞骨和增加染色质可访问性来促进天真的多能性
Renhong Lu1, Bowen Lin1, Zheyi Lin1
1State Key Laboratory of Cardiology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China; Clinical Center for Heart Disease Research, School of Medicine, Tongji University, Shanghai 200120, China; Shanghai Arrhythmia Research Center, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China; Department of Cardiology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, China; Shanghai Frontiers Center of Nanocatalytic Medicine, Shanghai, 200092, China.
低度通过改变细胞结构和基因表达,显著增强了细胞重编程到纯粹的多能性. 这个物理因素重塑细胞骨和基因组,为细胞命运过渡提供了新的见解.
科学领域:
- 细胞生物学 细胞生物学
- 发育生物学 发展生物学
- 干细胞生物学 干细胞生物学
背景情况:
- 细胞命运的确定在生物学和医学中至关重要.
- 重编程差异化细胞到纯粹的多能性是一个关键目标.
- 度在细胞命运转变中的作用以前未被探索过.
研究的目的:
- 为了研究度在细胞命运过渡中的作用.
- 阐明度诱导的细胞命运变化的潜在分子机制.
主要方法:
- 流式细胞计,qPCR和体内测试 (瘤,嵌合体小鼠) 评估了重新编程的效率.
- 通过TEM,免疫光,西斑和遗传/化学修饰,分析了细胞结构和细胞通路.
- 多原子测序 (ATAC-seq,ChIP-seq) 揭示了表观遗传和转录组的变化.
主要成果:
- 低奥斯莫斯条件增加了重编程效率超过60倍,相比同奥斯莫斯条件.
- 低度通过增加细胞大小,核面积和染色质可访问性 (H3K27ac) 诱导了天真的多能性.
- PI3K-AKT-SP1信号激活介导细胞骨和核重塑,促进多能基因表达.
结论:
- 低度促进细胞命运过渡到纯粹的多能性.
- 这个过程涉及细胞骨,核骨和基因组的重塑.
- PI3K-AKT-SP1信号通路是这些度诱导变化的关键媒介.
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