在细胞中REDD1的表达促进了炎和灭,在链毒素诱导的糖尿病病中
Siddharth Sunilkumar1, Sandeep M Subrahmanian1, Esma I Yerlikaya1
1Department of Cellular and Molecular Physiology, Penn State College of Medicine, Hershey, PA, USA.
Cell death & disease
|February 7, 2025
概括
在糖尿病病中,高血糖通过REDD1 (调节发育和DNA损伤反应1) 促进脏炎症. 准REDD1可能为糖尿病病提供新的治疗方法.
科学领域:
- 腎臟病學 (nephrology) 是一種醫學.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 糖尿病病 (DN) 涉及无菌炎症和免疫反应的改变,导致损伤.
- 高血糖是DN的关键驱动因素,但潜在的分子机制尚未完全理解.
研究的目的:
- 研究调节发育和DNA损伤反应1 (REDD1) 在调节糖尿病病中高血糖诱导炎症中的作用.
- 评估REDD1作为DN的潜在治疗点.
主要方法:
- 在小鼠和培养的人类 podocytes 中利用链毒素 (STZ) 诱导的糖尿病.
- 评估了REDD1蛋白水平,免疫细胞透,白蛋白尿和炎症标志物.
- 研究了SGLT2抑制剂达帕格利弗洛辛和REDD1的遗传删除 (REDD1-/-小鼠和podocyte特定的REDD1删除) 的影响.
- 检查了NF-κB信号传递,热 (NLRP3炎症组,卡斯帕酶-1活性,LDH释放) 和巨细胞化学反应.
主要成果:
- 高血糖症在糖尿病小鼠的脏中增加了REDD1表达,与免疫细胞透相关.
- 达帕格利弗洛辛降低了高血糖,REDD1水平和脏炎症.
- 患有糖尿病的REDD1-/-小鼠没有表现出白蛋白尿,炎症减少,巨细胞透率降低.
- 细胞特异性的REDD1删除阻止了高血糖引起的NF-κB激活,化学激素表达,巨细胞招募和热.
- 在受保护于糖尿病损伤和热的 podocytes 中的 REDD1 缺乏.
结论:
- 足细胞特异性的REDD1对于糖尿病病中高血糖驱动的炎症和热至关重要.
- 准 podocyte REDD1 是对 DN 的一个有希望的治疗策略.
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