在早期的iPSC重编程过程中,Dux激活了代谢-乳化-MET网络,Brg1作为基因素乳化读取器
Xinglin Hu1, Xingwei Huang1,2,3,4, Yue Yang1
1Department of Histology and Embryology, Basic Medical Science College, Harbin Medical University, 194 Xuefu Rd, Nangang District, Harbin, Heilongjiang Province 150081, China.
Nucleic acids research
|March 21, 2024
概括
杜克斯过度表达通过修改H3K18la触发诱导的多能干细胞 (iPSC) 重编程,增强代谢切换和上皮过渡. 这项研究揭示了Dux诱导的H3K18la作为一个关键的调节器,并确定了Brg1作为一种新的基因素乳化阅读器.
科学领域:
- 细胞重新编程的细胞重编程.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 干细胞生物学 干细胞生物学
背景情况:
- 诱导多能干细胞 (iPSC) 重编程涉及复杂的事件,如介质细胞-上皮细胞过渡 (MET),基因激活和表观遗传变化.
- 管理iPSC重编程网络的准确监管要素仍然难以捉摸.
- 在iPSC重编程中,Dux的作用是促进全能性的因素,尚未得到充分研究.
研究的目的:
- 调查杜克斯诱导的H3K18la在调节iPSC重编程网络中的作用.
- 阐明Dux提高iPSC重编程效率的机制.
- 在重编程过程中识别与H3K18la的新型蛋白相互作用.
主要方法:
- 在相关细胞模型中过度表达Dux.
- 对基因素乳化修饰的分析 (H3K18la).
- 使用H3K18la免疫沉的蛋白质组分析.
- 评估与多能性和MET相关的代谢变化和基因表达.
主要成果:
- 杜克斯过度表达诱导H3K18la,它调节了代谢-H3K18la-MET网络,增强了iPSC重编程.
- 杜克斯诱导的H3K18la促进了代谢切换,并招募了p300.
- 蛋白质组分析发现Brg1与H3K18la结合,两者都富含多能性和上皮结基因促进剂.
结论:
- 杜克斯诱导的H3K18la作为早期iPSC重编程的强有力的触发器.
- 在iPSC生成过程中,H3K18la修饰对于代谢重编程和MET至关重要.
- Brg1被认定为一种新的基因组乳化读取器,它与H3K18la结合,并影响关键的重编程基因.
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