在血管新生过程中,IV型原体的表达受到Notch3介导的Notch信号的调节
Kazuki Kukita1, Masayoshi Sakaguchi2, Hiroki Inoue3
1Graduate School of Engineering, Kogakuin University, Tokyo, Japan.
Biochemical and biophysical research communications
|January 22, 2025
概括
由Notch3介导的Notch信号传递,通过调节IV型原体表达,对血管生成至关重要. 这个过程支持新的血管形成和血管成熟,提供治疗见解.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 血管生物学 血管生物学
背景情况:
- 血管新生包括内皮细胞的增殖,迁移和细胞外基质 (ECM) 改造.
- 第四类原蛋白对血管底膜再生至关重要,影响细胞行为.
- 痕信号传递是细胞通信和分化中的关键途径.
研究的目的:
- 调查Notch信号,特别是Notch3在调节IV型原蛋白表达中的作用.
- 为了阐明将Notch3与COL4A1基因表达联系起来的分子机制.
- 在共同培养模型中评估Notch3介导信号对血管生成的影响.
主要方法:
- 利用siRNA抑制TIG-1纤维细胞中的Notch3表达.
- 使用Notch3细胞内域 (NICD3) 的短暂表达来激活Notch信号.
- 建立了与TIG-1纤维细胞和HUVECs共同培养的血管新生模型.
- 在共同培养系统中使用诺奇信号抑制剂 (siNotch3,DAPT).
主要成果:
- 通过siRNA介导的Notch3抑制显著降低了COL4A1基因表达.
- 通过NICD3激活Notch信号,增加了COL4A1的表达.
- 在共同培养中,抑制Notch信号降低了HUVEC附近α1(IV) 阳性TIG-1纤维细胞的存在.
结论:
- 在血管生成过程中促进IV型原体表达,Notch3介导的信号传输是必不可少的.
- 痕信号调节IV型原水平,这对于底层膜形成和血管成熟至关重要.
- 研究结果提供了关于血管生成机制和血管病理的潜在治疗点的见解.
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