恩多林-1通过破坏HDAC2/Sin3A/MeCP2核心压缩复合体来诱导人类肺纤维细胞中的结合组织生长因子表达
Hung-Sheng Hua1, Heng-Ching Wen1, Hong-Sheng Lee1,2
1Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 110, Taiwan.
Journal of biomedical science
|June 13, 2023
概括
HDAC2/Sin3A/MeCP2复合物抑制CTGF,这是气道纤维化的一个关键因素. 这种复杂的干扰促进了CTGF的产生,突出了HDAC2和Sin3A.
科学领域:
- 肺部医学 肺部医学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 降低基因组脱乙酶 (HDAC) 2活性与严重喘中的炎症增加有关.
- 连接组织生长因子 (CTGF) 在严重喘中驱动呼吸道纤维化.
- HDAC2/Sin3A/甲基-CpG结合蛋白 (MeCP) 2复合体在肺纤维细胞中CTGF调节中的作用尚不清楚.
研究的目的:
- 研究HDAC2/Sin3A/MeCP2核心压缩机复合体在调节CTGF生产中的功能.
- 在呼吸道纤维化小鼠模型中检查HDAC2,Sin3A和MeCP2的表达.
主要方法:
- 研究了HDAC2 / Sin3A / MeCP2复合体在人类肺纤维细胞 (WI-38) 中内衣素 (ET) - 1刺激的CTGF产生中的作用.
- 在卵胺诱导的气道纤维化模型中评估HDAC2,Sin3A和MeCP2表达.
- 利用过度表达,siRNA和西方抹黑技术来分析蛋白质相互作用和活性.
主要成果:
- 在肺纤维细胞中,HDAC2抑制了ET-1诱导的CTGF表达和H3乙化.
- ET-1刺激破坏了HDAC2/Sin3A/MeCP2复合体,导致CTGF促进体解离,并增加了CTGF的产生.
- 在纤维化模型中,降低的HDAC2和Sin3A水平与增加的H3乙化和CTGF表达相关.
结论:
- 在肺纤维细胞中,HDAC2/Sin3A/MeCP2核心压缩复合体作为CTGF的内源抑制剂.
- 这种复合体的破坏促进CTGF的产生,导致气道纤维化.
- 在气道纤维化病原发生过程中,HDAC2和Sin3A似乎比MeCP2发挥更为关键的作用.
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