SMRT将HDAC3核心压缩复合物在染色质上,以调节巨细胞中的炎症和代谢途径
Astradeni Efthymiadou1, Chaode Gu2, Cheng Wang3
1Department of Medicine Huddinge, Unit for Gastroenterology and Nutrition, Karolinska Institutet, 14183 Huddinge, Sweden.
Nucleic acids research
|September 18, 2025
概括
视网膜酸和甲状腺激素受体 (SMRT) 和核受体核心压缩器 (NCOR) 的沉默介质独特地调节巨细胞炎症和新陈代谢. SMRT作为染色质,控制NCOR定位和复杂组合.
科学领域:
- 免疫学 免疫学 免疫学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 分子生物学分子生物学
背景情况:
- 转录因子和协同调节器通过表观遗传和转录控制来协调巨细胞的炎症和代谢功能.
- 基因素脱乙酶3 (HDAC3) 核心压缩复合体,包括SMRT和NCOR子单元,对于这些过程至关重要,但它们的独特作用尚不清楚.
研究的目的:
- 阐明SMRT和NCOR在调节巨细胞炎症和代谢途径中的全基因组范围的非冗余作用.
- 了解SMRT和NCOR如何协调表观遗传修饰和转录活动.
主要方法:
- 在小鼠巨细胞系 (RAW264.7) 和SMRT或NCOR耗尽后的骨髓原始巨中进行全基因组转录组分析.
- 表观基因组分析以评估染色质可访问性和H3K27乙化中的变化.
- 细胞组分析以确定染色质中的核心压力相互作用.
主要成果:
- SMRT耗尽主要上调与炎症相关的途径,而NCOR耗尽上调与代谢相关的途径.
- 核心压缩器枯竭差异改变了染色质可访问性和H3K27乙化,与转录变化相关.
- SMRT作为HDAC3核心压缩复合体的基本染色质,控制NCOR,GPS2和HDAC3.3的局部化.
结论:
- SMRT和NCOR在巨细胞中扮演着不同的,非冗余的角色,分别调节炎症和代谢途径.
- 这些核心压缩剂协调染色质可访问性,基因素乙化和增强剂活性,以控制基因表达.
- 了解这些不同的作用,可以了解巨细胞的功能和潜在的治疗点.
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