特定于光滑肌肉的HuR敲击减弱了血管化
Ang Chen1, Peidong Yuan1, Yue Lu1
1State Key Laboratory for Innovation and Transformation of Luobing Theory; Key Laboratory of Cardiovascular Remodeling and Function Research of MOE, NHC, CAMS and Shandong Province; Department of Cardiology, Qilu Hospital of Shandong University, Jinan 250012, China.
Journal of molecular and cellular cardiology
|July 6, 2025
概括
人类抗原R (HuR) 通过稳定与Runt相关的转录因子2 (Runx2) mRNA.促进血管化. 抑制HuR或其光滑肌特异性淘汰会防止这种情况.
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.
- 血管生物学 血管生物学
背景情况:
- 血管化是动脉样硬化,慢性病和衰老中普遍存在的病理特征.
- 人类抗原R (HuR),一种RNA结合蛋白,与各种疾病有关,但其在血管化中的作用尚不清楚.
研究的目的:
- 为了研究HuR在血管化中的功能.
- 阐明HuR调节血管化的分子机制.
主要方法:
- 生产了特定于光滑肌肉的HuR淘汰 (HuRSMKO) 鼠标.
- 在体外使用血管光滑肌细胞 (VSMC) 和在小鼠体内评估血管化.
- 通过ATF4.4通过高酸盐对HuR表达调节的分析.
- 研究HuR与Runx2mRNA的相互作用.
主要成果:
- 在化条件下,HuR表达是上调调的,由ATF4.4的高酸盐诱导.
- 过度表达HuR会加剧高酸盐诱导的VSMC化,而缺乏HuR则会抑制它.
- 顺肌特定的HuR淘汰和使用HuR抑制剂 (CMLD-2) 的治疗在体内减弱了血管化.
- HuR直接与Runx2mRNA结合,增强其稳定性和蛋白质表达.
结论:
- 在调节血管化方面,HuR起着至关重要的作用.
- 通过对Runx2.2的转录后控制,HuR促进了血管化.
- 向HuR代表了血管化的潜在治疗策略.
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