上皮补充C3表达影响纤维化进展
Ganna Stepanova1, Anna Manzéger1,2, Miklós M Mózes1,2
1Institute of Translational Medicine, Semmelweis University, Nagyvárad tér 4, 1089 Budapest, Hungary.
International journal of molecular sciences
|December 17, 2024
概括
新补充成分3 (C3) 合成与小鼠和人类脏疾病的纤维化进展更快有关. 这种C3的过度生产可能会通过局部的亲纤维化作用推动慢性病的进展.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學專業.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 纤维化是慢性病的常见结果.
- 遗传因素和补充成分3 (C3) 涉及纤维化,但脏C3生产在纤维化进展和上皮转介质过渡 (EMT) 中的具体作用尚不清楚.
研究的目的:
- 研究脏C3生产在基因决定纤维化进展中的作用.
- 探索C3对表皮细胞转介质转换 (EMT) 的影响及其与老鼠模型中的纤维化和人类病的关联.
主要方法:
- 在耐纤维化 (C57Bl/6J) 和易发生纤维化 (CBA/J,BALB/cJ) 的小鼠中单侧尿路阻塞 (UUO) 模型.
- 在不同时间点对脏组织进行C3,原蛋白和其他纤维化标记物的分析.
- 在实验室中使用小鼠初级管状上皮细胞 (PTEC) 接受TGFβ或C3a激动剂治疗的研究.
- 检查人类焦点细分质硬化 (FSGS) 和健康脏样本.
主要成果:
- 与耐药小鼠相比,容易患有纤维化的小鼠显示出早期的脏C3信使RNA (mRNA) 诱导和更快的纤维化进展.
- 在CBA小鼠中,C3,利波卡林-2 (Lcn2),Tgfb1和Ccl2.2的表达最高.
- 人类FSGS脏显示C3mRNA过度表达和显著的管状C3染色.
- 在PTEC中,C3a激动剂治疗诱导了亲纤维的EGR1和EMT,独立于TGFβ.
结论:
- 新管C3合成与小鼠遗传决定纤维化进展的速度有关.
- 管状C3的过度生产在人类FSGS的发病过程中起作用.
- 管状C3的局部亲纤维效应可能会影响慢性病的进展.
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