BST-1通过Ca2+/CaN/NFATc3通路加剧阿尔多素诱导的心脏缩
Yao Yuan1, Lina Zhao1,2, Hongjuan Cao1
1Guizhou Medical University, Guiyang, Guizhou, China.
General physiology and biophysics
|July 14, 2023
概括
骨髓 stromal 细胞抗原-1 (BST-1) 通过激活 Ca2+/CaN/NFATc3 途径加剧心脏缩. BST-1提高了细胞内的含量,在病理条件下促进细胞生长.
科学领域:
- 心血管生物学 心血管生物学
- 细胞信号传递 细胞信号传递
- 分子医学是分子医学.
背景情况:
- 骨髓 stromal 细胞抗原-1 (BST-1) 通过尼古丁胺氨酸二核酸 (NAD+) 水解来调节细胞功能.
- BST-1产生循环ADP核糖 (cADPR),激活细胞内 (Ca2+) 信号传输.
- 在病理性心肌缩中BST-1的作用及其相关的Ca2+信号通路仍然在很大程度上未被阐明.
研究的目的:
- 为了研究BST-1在调节Ca2+信号在病理性心肌缩中的作用.
- 阐明BST-1影响心脏缩的潜在分子机制.
主要方法:
- 活体研究:在自发高血压大鼠的心脏缩组织中分析了BST-1表达.
- 试验室研究:阿尔多 (ALD) 用于诱导H9C2细胞的缩.
- 进行了BST-1敲击,以评估其对cADPR水平,细胞内Ca2+度,调节的神经酸酶 (CaN) 活性和表达以及激活T细胞3 (NFATc3) 转位的核因子的影响.
主要成果:
- 在心脏缩组织中观察到升高的BST-1表达.
- BST-1的淘汰导致cADPR水平下降和细胞内Ca2+度下降.
- BST-1 knockdown 降低了 CaN 活性和蛋白质表达,抑制了 NFATc3 核转位,并减少了 H9C2 细胞大小.
结论:
- BST-1在加剧心脏缩方面发挥着重要作用.
- 通过激活Ca2+/CaN/NFATc3信号通路,BST-1可能会促进心脏缩.
- 准BST-1可能是心脏缩的潜在治疗策略.
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