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GDF11 调节血管光滑肌细胞表型切换以防止大动脉动脉瘤形成

Xiang Su¹, Lulu Chen², Yihui Qiu¹

¹Department of Vascular Surgery, The First Affiliated Hospital of Wenzhou Medical University, Nanbaixiang Town, Ouhai Distict, Wenzhou City, 325000, P.R. China.

Cardiovascular drugs and therapy

|November 15, 2025

概括

增长差异化因子11 (GDF11) 在治疗腹腔大动脉动脉瘤 (AAA) 方面表现有前途. 较低的GDF11水平与AAA进展相关,而增加的GDF11可以减轻疾病的严重程度并改善结果.

科学领域:

心血管生物学心血管生物学
分子医学是分子医学.
大动脉疾病研究研究

背景情况:

腹腔大动脉瘤 (AAA) 是一种严重的疾病,缺乏有效的药物治疗.
增长差异化因子11 (GDF11),TGF-β超级家族成员,与心血管健康有关.
在AAA组织中观察到GDF11表达的减少,随着疾病的进展而减少.

研究的目的:

调查GDF11在腹腔大动脉动脉瘤的发病过程中的作用.
探索GDF11在缓解AAA进展方面的治疗潜力.

主要方法:

对AAA组织 (GSE57691) 的转录组分析,以评估GDF11表达.
使用安二酶诱导的AAA小鼠模型 (ApoE-/-) 来研究GDF11的影响.
用AAV介导的GDF11基因传递用于治疗干预.
在血管光滑肌细胞 (VSMC) 上进行了体外实验,以阐明分子机制.

主要成果:

在AAA组织中,GDF11的表达显著减少,与炎症标记物 (IL-1β,IL-6) 和矩阵金属蛋白酶 (MMP-2,MMP-9) 有负相关.
在小鼠中,GDF11的过度表达减少了AAA发生率,限制了大动脉扩张,减弱了矩阵降解和炎症.
通过TGF-β/Smad2/3信号传递,GDF11抑制了炎症性细胞因子,保持了细胞外基质完整性,并维持了VSMC表型.

结论:

GDF11对AAA的发展和进展起着保护作用.
GDF11通过抑制炎症,保存细胞外基质,并通过TGF-β/Smad2/3信号维持VSMC功能来减轻AAA.
GDF11代表了腹腔大动脉动脉瘤的潜在治疗标.

关键词:

腹腔大动脉动脉瘤腹腔大动脉动脉瘤增长差异化因素 11 增长差异化因素矩阵金属蛋白质酶 (MTPA) 是一种转变增长因子-β的转变

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