早期生长反应蛋白2通过酸化Smad3在纤维化期间促进部分上皮层-介质细胞过渡
Anni Song1, Ruiwei Yan1, Wei Xiong1
1Department of Nephrology, Tongji Medical College, Union Hospital, Huazhong University of Science and Technology, Wuhan 430022, China.
概括
早期生长反应2 (EGR2) 通过激活Smad3酸化,驱动纤维化. 向EGR2为慢性病 (CKD) 和末期病 (ESRD) 提供了潜在的治疗策略.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 分子生物学分子生物学
- 病理学 病理学 病理学
背景情况:
- 慢性病 (CKD) 通过纤维化进展到末期病 (ESRD).
- 驱动纤维化和有效治疗的机制尚不清楚.
- 早期生长反应2 (EGR2) 与器官发育和细胞分化有关.
研究的目的:
- 调查EGR2在纤维化病变发生过程中的作用.
- 阐明EGR2有助于病进展的分子机制.
主要方法:
- 从CKD患者和小鼠的脏组织中检查EGR2表达.
- 在患有单边尿路阻塞 (UUO) 的小鼠中利用了EGR2的遗传删除和过度表达模型.
- 研究了EGR2对上细胞 - 介质细胞过渡 (EMT),细胞外基质 (ECM) 沉积和细胞中信号通路 (Smad3,STAT3) 的影响.
主要成果:
- 在CKD脏的近端管道中,EGR2表达升高.
- EGR2缺失减轻了阻塞性病,而过度表达则加剧了纤维化.
- 通过部分EMT和MMP/TIMP不平衡,EGR2促进了ECM沉积.
- EGR2对Smad3酸化产生了关键的影响,STAT3酸化调节了EGR2的转录.
结论:
- 通过p-STAT3-EGR2-p-Smad3信号轴,EGR2在纤维化中起着致病作用.
- 向EGR2是一个有前途的治疗途径,用于治疗慢性脏病.
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