相关实验视频
Updated: Jul 15, 2025

13:47
Chromatin Immunoprecipitation ChIP using Drosophila tissue
Published on: March 23, 2012
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通过cBAF,pBAF和gBAF复合体对多结相关的希斯标记的微分调制.
bioRxiv : the preprint server for biology
|October 4, 2023
概括
佳能BAF (cBAF) 综合体独特地消除了Nkx2.9位点的多镇压标记,激活了小鼠胚胎干细胞中的基因转录. 这与其他SWI/SNF复合体形成鲜明对比,突出显示了cBAF在染色质重塑中的特殊作用.
科学领域:
- 染色体生物学 染色体生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因调节 基因调节
背景情况:
- 哺乳动物SWI/SNF (mSWI/SNF) 复合体是ATP依赖的染色质重塑剂,对基因转录至关重要.
- 小鼠胚胎干细胞 (mESCs) 使用三种mSWI/SNF形式:正规BAF (cBAF),多相关BAF (pBAF) 和GLTSCR相关BAF (gBAF).
- 对于神经分化至关重要的Nkx2.9基因在mESC中具有双价标记,需要mSWI/SNF来激活.
结论:
- 佳能BAF (cBAF) 具有独特的功能,可以直接对抗多结相关的质子修饰,与gBAF和pBAF不同.
- 仅核细胞占用率的变化并不能完全解释观察到的抑制标记脱甲基化.
- 这项研究阐明了cBAF在解决神经分化期间基因激活的多介导抑制中的特定作用.
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