超增强剂活动的SOX2依赖调节的分子基础
Wanki Yoo1, Yi Wei Song1, Jihyun Kim2
1Department of Precision Medicine, Graduate School of Basic Medical Science (GSBMS), Institute for Antimicrobial Resistance Research and Therapeutics, Sungkyunkwan University School of Medicine, Suwon 16419, Republic of Korea.
Nucleic acids research
|November 6, 2023
概括
像SOX2这样的先驱转录因子 (TFs) 通过在超级增强剂 (SE) 上形成凝结物来驱动干和癌症. 这项研究揭示了SOX2和p300合作通过SEs的转录凝聚调节基因表达.
科学领域:
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 癌症研究 癌症研究
背景情况:
- 像SOX2这样的先驱转录因子 (TFs) 对于维持茎状性和推动癌症进展至关重要.
- 在超级增强剂 (SE) 中,SOX2 在转录凝聚物中起作用,以增强基因表达,但确切的机制尚不清楚.
- 了解SOX2在SE中介转录中的作用对于开发向癌症疗法至关重要.
研究的目的:
- 阐明SOX2及其协活性剂p300与SOX2丰富的SEs合作形成转录凝缩物的机制.
- 研究SOX2凝结对增强剂活性和基因表达的功能影响.
- 验证SOX2丰富的SEs在干细胞和癌细胞中的作用.
主要方法:
- 生物信息分析以确定一种SOX2丰富的SE模型 (mSE078) 和联合激活剂 (p300).
- 在体外和基于细胞的测试来研究SOX2-p300凝结物形成和增强剂活性.
- 染色体免疫沉和记者测试以评估转录活性和染色体乙化.
主要成果:
- SOX2与mSE078 SE的p300形成功能转录凝聚物,这与增强剂活性相关.
- 在冷凝剂中与SOX2结合的p300增强了转录活性,并诱导了染色质乙化.
- 富含SOX2的SE被证实是干细胞和癌细胞中目标基因表达的关键调节者.
结论:
- SOX2和p300通过在SOX2丰富的SEs.中形成转录凝缩物来共同调节基因表达.
- 这种相互作用对增强器功能和染色质调节至关重要,影响茎状和癌症.
- 这些发现为SEs的TF驱动基因调节提供了机制性的见解.
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