HINT1通过向血管光滑肌细胞中的ITGA6 / FAK轴来加剧大动脉动脉瘤
Yan Zhang1, Wencheng Wu2, Xuehui Yang1
1Medical Basic Research Innovation Center for Cardiovascular and Cerebrovasc, Nanjing Medical University, Nanjing, China.
The Journal of clinical investigation
|April 8, 2025
概括
胺三核酸结合蛋白1 (HINT1) 通过促进血管光滑肌细胞 (VSMC) 切换来驱动大动脉动脉瘤. 抑制HINT1/ITGA6/FAK通路为这种心血管疾病提供了潜在的治疗策略.
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.
- 细胞病理生理学
背景情况:
- 大动脉动脉瘤是一种危险的心血管疾病,缺乏有效的治疗方法.
- 血管光滑肌细胞 (VSMC) 现型切换在主动脉动脉瘤发育中至关重要.
研究的目的:
- 研究动脉动脉瘤病变发生过程中希斯蒂丁三元核酸结合蛋白1 (HINT1) 的作用.
- 阐明 HINT1 介导的 VSMC 表型切换和大动脉动脉瘤进展背后的分子机制.
主要方法:
- 在人类大动脉动脉瘤组织和小鼠模型中分析HINT1表达.
- 研究VSMC特定的HINT1删除对大动脉动脉瘤的影响.
- 检查涉及HINT1,TFAP2A,ITGA6和FAK/STAT3信号的分子相互作用.
- 在小鼠模型中评估defactinib的治疗潜力.
主要成果:
- 在大动脉动脉瘤患者和小鼠中,HINT1被上调.
- 通过抑制VSMC表型切换,VSMC特有的HINT1删除减轻了大动脉动脉瘤.
- 病理因素增加了HINT1核转位,促进了HINT1/TFAP2A相互作用和ITGA6转录.
- 这激活了FAK/STAT3通路,加剧了VSMC切换和大动脉动脉瘤.
- 德法提尼布治疗抑制了FAK信号传递,并限制了大动脉动脉瘤的发展.
结论:
- HINT1/ITGA6/FAK轴是VSMC表型切换和大动脉动脉瘤的关键驱动因素.
- 针对这个轴,例如,用defactinib,为大动脉动脉瘤提供了一个有前途的治疗策略.
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