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KLF15通过与p53相互作用,防止血管光滑肌细胞中的铁亡

Guangming Fang¹, Yexuan Tian¹, Lili You²

¹Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing, 100029, China.

Biochemical and biophysical research communications

|May 18, 2025

概括

克鲁佩尔样因子15 (KLF15) 保护大脑细胞免受反应性氧物种 (ROS) 诱导的细胞死亡. KLF15通过与p53相互作用来防止铁亡,为内动脉瘤提供了潜在的治疗标.

科学领域:

血管生物学血管生物学
细胞死亡机制细胞死亡机制
分子医学是分子医学.

背景情况:

内动脉瘤 (IA) 的形成涉及血管光滑肌细胞 (VSMC) 的损失,由活性氧物种 (ROS) 驱动.
克鲁佩尔样因子15 (KLF15) 对于血管平衡至关重要,但其在ROS诱导的VSMC死亡中的作用尚不清楚.
在人类IA组织中观察到KLF15水平降低.

研究的目的:

研究KLF15在人类大脑VSMCs (HBVSMCs) 中ROS诱导的细胞死亡中的作用.
阐明KLF15影响铁亡的分子机制.
确定KLF15和p53在调节铁亡中的相互作用.

主要方法:

分析GEO数据库微阵列数据集和ROS处理的HBVSMC中的基因表达.
对KLF15沉默HBVSMCs的转录组分析.
细胞死亡试验,铁灭抑制研究,共免疫沉和局部近距离结合试验.

主要成果:

在IA组织和ROS治疗的HBVSMC中,KLF15的表达减少.
沉默KLF15可以调高促进铁灭的基因 (SAT1,HMOX1,MAP1LC3B) 和调低SLC7A11.
KLF15与p53相互作用,而p53的敲击拯救了KLF15对铁亡的抑制作用.

结论:

KLF15在HBVSMCs中表现出对ROS诱导的铁亡的保护作用.
通过与p53相互作用,KLF15可能会减轻ferroptosis敏感性,防止p53介导的SLC7A11抑制.
KLF15 是一种潜在的治疗点,可以通过抑制铁亡来预防IA的进展.

关键词:

铁化是铁化的一种.内动脉瘤是一个内动脉瘤.在KLF15KLF15KLF15 血管光滑肌肉细胞细胞在p53中,p53是什么?

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