黑色素通过调节STAT3酸化来减弱糖尿病病中的细胞衰老和细胞亡
Xinzhe Fang1, Weiyi Huang2, Qiang Sun1
1Department of Pharmacology, Shantou University Medical College, Shantou 515041, China.
Life sciences
|September 22, 2023
概括
黑素通过抑制信号传感器和转录3 (STAT3) 激活器酸化来缓解糖尿病病,减少细胞衰老和亡. 这项研究阐明了黑激素在脏疾病中的保护机制.
科学领域:
- 内分泌学和新陈代谢学
- 腎臟病學 (nephrology) 是一種醫學專業.
- 细胞生物学 细胞生物学
背景情况:
- 调节昼夜节律的关键激素 - - 黑激素,显示出改善糖尿病病 (DN) 的潜力.
- 黑激素在DN中发挥其保护作用的确切机制尚未完全理解.
- 研究黑激素对信号传感器和转录3激活器 (STAT3) 的影响,为了解DNA病变产生提供了一种新的方法.
研究的目的:
- 阐明黑激素对糖尿病病 (DN) 的保护作用的机制.
- 研究信号传感器和转录3激活器 (STAT3) 在黑激素对DNA细胞衰老和细胞亡的作用中的作用.
- 为了确定黑激素是否在DN的背景下调节STAT3酸化.
主要方法:
- 在C57BL/6小鼠中使用链毒素 (STZ) 诱导糖尿病病 (DN).
- 通过使用暴露于高葡萄糖的人类皮膜近接管膜上皮细胞 (HK-2) 建立了DN的体外模型.
- 细胞衰老,细胞亡和STAT3酸化在体内和体外进行了评估.
主要成果:
- 在DN模型中,氨酸治疗抑制了STAT3酸化.
- 黑色素降低了衰老标记物 (p53,p21,p16INK4A) 和亡蛋白的表达 (切割PARP1,caspase-9,-3).
- 在体外,黑激素的作用被STAT3抑制剂模仿,并被IL-6逆转,证实了STAT3的作用.
结论:
- 在糖尿病病的背景下,黑素抑制STAT3酸化.
- 这种抑制STAT3酸化是一种关键机制,通过它,黑激素减轻DNA中的细胞衰老和细胞亡.
- 这些发现为DN治疗中黑激素的治疗潜力提供了新的见解.
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