通过TGF-β/Smad3介导的衰老和纤维化,ZNF384驱动的纤维素-1会加剧血管硬
Dan Yan1, Tianyi Ji1, Xiaolu Liang1
1Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
纤维素-1 (Fbln1) 通过促进细胞衰老和矩阵变化,加剧血管硬. 针对Fbln1或其调节剂可能为与年龄相关的血管疾病提供新的治疗方法.
科学领域:
- 心血管生物学 心血管生物学
- 衰老研究研究 衰老研究
- 分子医学是分子医学.
背景情况:
- 血管硬是衰老和心血管疾病的一个关键特征.
- 它涉及血管光滑肌肉细胞 (VSMC) 衰老和细胞外矩阵 (ECM) 失调.
研究的目的:
- 研究纤维素-1 (Fbln1) 在血管硬方面的作用.
- 阐明Fbln1导致血管衰老和疾病的分子机制.
主要方法:
- 人类血统中的蛋白质基因分析.
- 使用纤维素-1 (Fbln1) 淘汰赛小鼠和双血管硬度模型 (衰老和Ang II输液).
- 通过脉冲波速度 (PWV),组织学和分子标记来评估表型;用于机械学研究,采用DNA下拉,双露西法酶记者测定和RNA测序 (RNA-seq).
主要成果:
- 血Fbln1升高与遗传性血管硬相关.
- 在老化和Ang II模型中,Fbln1敲击改善了血管硬性,减少了PWV,逆转了VSMC衰老,并减弱了原沉积.
- 鉴定了指蛋白384 (ZNF384) 作为Fbln1转录激活剂,通过TGF-β/Smad3通路促进VSMC衰老和ECM重塑.
结论:
- 通过ZNF384介导的转录激活和TGF-β/Smad3信号传递,Fbln1会加剧血管硬.
- 准Fbln1或其调节剂为与年龄相关的血管病理提供了潜在的治疗策略.
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