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Updated: Jul 21, 2025

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Yeast As a Chassis for Developing Functional Assays to Study Human P53
Published on: August 4, 2019
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胺DNA糖酶调节细胞循环驱动的多能细胞中的p53转录控制
Sergi Aranda1, Anna Alcaine-Colet1, Cecilia Ballaré1
1Centre for Genomic Regulation (CRG), Barcelona Institute of Science and Technology, Dr. Aiguader 88, Barcelona 08003, Spain.
Molecular cell
|July 28, 2023
概括
胺DNA糖酶 (TDG) 作为细胞周期调节因子与p53在小鼠胚胎干细胞 (mESCs),控制基因表达和促进细胞在分化过程中的命运.
科学领域:
- 发展生物学 发展生物学
- 干细胞生物学 干细胞生物学
- 分子生物学分子生物学
背景情况:
- 细胞周期进展影响多能干细胞对分化反应.
- 细胞周期相关的转录组动态的决定因素在很大程度上仍然未知.
- 了解这些动态对于控制细胞命运决定至关重要.
研究的目的:
- 描述小鼠胚胎干细胞 (mESCs) 的细胞循环相关转录组和蛋白质组.
- 确定细胞周期依赖基因表达和细胞命运的新型调节者.
- 阐明胺DNA糖酶 (TDG) 在mESC自我更新和分化中的作用.
主要方法:
- 在mESC中分析细胞循环相关的转录组和蛋白质组.
- 鉴定TDG作为p53的细胞周期调节的辅因子.
- 染色体免疫沉 (ChIP) 来评估TDG和p53与cis调节元件的联合结合.
- 功能性测试涉及TDG耗尽,以研究对细胞命运和分化的影响.
主要成果:
- 胺DNA糖酶 (TDG) 是mESCs中的瘤抑制剂p53的细胞周期调节的辅因子.
- TDG和p53共同结合到ESC特定的cis-regulatory元素,在自我更新过程中控制p53依赖基因转录.
- 动态TDG表达对于细胞周期相关的转录异质性至关重要.
- 暂时的TDG耗尽会影响早期分化过程中的mESC细胞命运决定.
结论:
- 在多能干细胞的细胞周期中,TDG在产生分子异质性方面发挥着新的作用.
- 蛋白质动力学,以TDG为例,对于在发育过程中对细胞命运的时间控制至关重要.
- 这些发现为干细胞自我更新和分化的调节提供了新的见解.
关键词:
提氨酸 DNA 葡萄糖酶.这是心肌细胞 (cardiomyocyte).细胞循环中的细胞循环.细胞的命运 细胞的命运基因调节 基因调节 基因调节在 p53 里,p53 是一个 p53 的类型.多能性的多能性.蛋白质组学 蛋白质组学它是自我更新的.干细胞是干细胞的组成部分.更多相关视频
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