干扰的流量调节蛋白质二硫化物异构酶A1的表达通过microRNA-204通过microRNA-204调节
Leonardo Y Tanaka1, Sandeep Kumar2, Lucas F Gutierre1
1Vascular Biology Laboratory, Heart Institute (InCor), University of São Paulo, School of Medicine, São Paulo, Brazil.
Frontiers in physiology
|April 19, 2024
概括
微RNAs miR-204/211 调节血管细胞中的蛋白质二硫化异硫酶A1 (PDIA1) 表达. 这种miR-204的PDIA1调节影响了血管光滑肌肉细胞分化,为血管疾病提供了潜在的治疗点.
科学领域:
- 血管生物学和病理生理学
- 疾病的分子机制.
- 转毒生物学 转毒生物学
背景情况:
- 反氧化过程显著影响血管病理生理学,蛋白二硫化异硫酶A1 (PDIA1) 在血管增殖性疾病中起着复杂的作用.
- 在血管疾病中PDIA1的双重保护和有害作用是细胞类型和上下文依赖的,强调需要了解其调节机制.
- 目前关于血管组织中PDIA1表达的调节知识仍然有限,这阻碍了对其在血管疾病中的作用的全面理解.
研究的目的:
- 在血管疾病的背景下阐明控制PDIA1表达的调节机制.
- 研究特定的微RNAs (miRNAs) 作为血管细胞中PDIA1的调节者的作用.
- 确定miRNAs调节PDIA1对血管光滑肌细胞 (VSMC) 分化和血管重塑的功能后果.
主要方法:
- 在小鼠的部分带绑定 (PCL) 模型中诱导血管变化并分析PDIA1表达.
- 生物信息分析以确定PDIA1的潜在miRNA标,重点关注miR-204-5p和miR-211-5p (miR-204/211).
- 使用分离的内皮细胞和VSMCs与miRNA模仿和PDIA1过度表达/下调进行体外实验,以评估对PDIA1水平和VSMC分化标志物的功能影响.
主要成果:
- 在PCL后的血管层中,PDIA1mRNA和蛋白质水平显著上调 (约为5倍).
- miR-204/211被确定为针对PDIA1的保存miRNAs,并被发现在PCL后的血管层下调.
- miR-204模仿转染减少了内皮细胞和VSMC中的PDIA1mRNA,重要的是,减少了VSMC收缩分化标记物,PDIA1过度表达逆转了这一效应.
结论:
- 发现了一种涉及miR-204/211在血管细胞中向PDIA1的新型调节途径.
- 这种miR-204介导的PDIA1下调在血管疾病模型中具有功能相关性,影响VSMC差异化.
- 已识别的PDIA1-miRNA调节轴代表了血管增殖性疾病的潜在治疗点,包括动脉样硬化.
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