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通过向KDM2B,SAMD4A抑制了腹腔大动脉动脉瘤的发展和VSMC的表型转变

Qing Chen¹, Shenrong Liu², Haobin Zhou²

¹Division of Vascular and Interventional Radiology, Department of General Surgery, Nanfang Hospital, Southern Medical University, Guangzhou 510515 Guangdong, China; Department of Vascular Surgery, Shenzhen Third People's Hospital, the Second Affiliated Hospital, Southern University Science and Technology, China.

Journal of advanced research

|March 13, 2025

概括

RNA结合蛋白SAMD4A通过阻止血管光滑肌细胞 (VSMC) 转变来抑制腹腔大动脉动脉瘤 (AAA). 针对SAMD4A可能为AAA预防提供新的治疗策略.

科学领域:

血管生物学血管生物学
疾病的分子机制.
遗传学和基因组学遗传学和基因组学

背景情况:

腹腔大动脉瘤 (AAA) 是一种危及生命的血管疾病,缺乏有效的药物治疗.
血管光滑肌细胞 (VSMC) 的病理表型转变是AAA的关键驱动因素,但其机制仍然不清楚.

研究的目的:

研究RNA结合蛋白SAMD4A在抑制VSMC表型转换和抑制AAA形成中的作用.

主要方法:

单细胞RNA测序 (scRNA-seq) 用于分析AAA中的VSMC异质性和RNA结合蛋白变化.
一个胰腺弹性酶 (PPE) 诱导的小鼠模型,以评估体内SAMD4A的功能.
在机理学研究中使用RNA-seq,RNA免疫沉降 (RIP) 测序和ChIP-qPCR.

主要成果:

在AAA发育过程中确定了三种VSMC亚型,它们在AAA发育过程中从收缩性转变为炎症性表型.
在AAA中SAMD4A的表达减少,其淘汰会加剧AAA的形成,而其表达会减弱AAA.
SAMD4A针对KDM2B来调节VSMC收缩和抑制AAA,而KDM2B抑制收缩标志物.

结论:

通过准KDM2B,SAMD4A抑制了AAA的进展和VSMC的表型转变.
SAMD4A 是一个潜在的治疗点,可以预防腹腔大动脉动脉瘤的形成.

关键词:

动脉瘤是一个动脉瘤.这就是KDM2B.这就是SAMD4D.单细胞RNA测序的一个细胞.顺滑肌肉细胞是什么?

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