通过DNMT3A介导的SOX17表观遗传沉默有助于内皮细胞迁移和纤维细胞激活在伤口愈合过程中
Xiaoping Yu1, Xiaoting Ma2, Junli Zhou1
1The Department of Burn, Gansu Provincial Hospital, Lanzhou, China.
PloS one
|October 19, 2023
概括
DNA甲基转移酶3α (DNMT3A) 降低了SRY盒转录因子17 (SOX17) 的调节,通过增强内皮细胞迁移和纤维细胞激活来促进伤口愈合. 这一发现为慢性伤口愈合提供了新的治疗策略.
科学领域:
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
- 伤口治愈研究研究 伤口治愈研究
背景情况:
- 慢性伤口愈合障碍是一个重大的临床挑战.
- 了解伤口修复的分子基础对于开发有效治疗方法至关重要.
研究的目的:
- 研究SRY盒转录因子17 (SOX17) 和DNA甲基转移酶3α (DNMT3A) 在伤口愈合中的作用.
- 在伤口修复的背景下阐明SOX17和DNMT3A之间的监管关系.
主要方法:
- 建立了一个伤口愈合的小鼠模型.
- 使用了免疫光学,RT-qPCR,西部涂抹,EDU,Transwell迁移,ELISA,ChIP-qPCR,DNA下拉和热测序测试.
- 分析了组织病理学变化和分子标记物表达.
主要成果:
- 在伤口愈合阶段,SOX17和DNMT3A的表达水平有所不同.
- 降低SOX17增强了内皮细胞迁移和TGF-β的产生.
- 在内皮细胞中SOX17的倒退激活了纤维细胞,增加了α-SMA和COL1的表达.
- DNMT3A过度表达减少了SOX17mRNA,增加了SOX17促进体甲基化,并证实了DNMT3A与SOX17促进体的相互作用.
结论:
- 通过DNMT3A调节SOX17的下调是促进伤口愈合的关键机制.
- 这一途径促进内皮细胞迁移和纤维细胞激活,提供潜在的治疗点.
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