抑制聚胺生物合成可以在1型糖尿病中保持β细胞功能
Emily K Sims1, Abhishek Kulkarni2, Audrey Hull3
1Division of Pediatric Endocrinology and Diabetology, Herman B. Wells Center for Pediatric Research, Center for Diabetes and Metabolic Diseases, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
Cell reports. Medicine
|November 2, 2023
概括
通过保护β细胞,α-difluoromethylornithine (DFMO) 在延缓1型糖尿病 (T1D) 方面表现有前途. 这项研究证实了其安全性,并表明DFMO可能会在T1D患者中保持β细胞功能.
科学领域:
- 内分泌学 在内分泌学.
- 免疫学 免疫学 免疫学
- 代谢疾病 代谢疾病
背景情况:
- 阿尔法二甲基诺尼丁 (DFMO) 是一种奥尼丁脱碳酶 (ODC) 抑制剂,在临床前模型中显示其有潜力延迟1型糖尿病 (T1D) 发病.
- 目前尚不清楚DFMO的确切作用机制及其对人类的耐受性.
研究的目的:
- 研究ODC在β细胞应激中的细胞自主作用.
- 评估DFMO在最近出现T1D的患者中维护β细胞功能的安全性和有效性.
主要方法:
- 对具有β细胞特异性ODC删除的小鼠进行了对毒素诱导糖尿病的保护的评估.
- 一项随机对照试验 (NCT02384889) 在41名近期T1D患者中评估了DFMO的安全性和耐受性,持续了3个月.
- 分析了尿液中的布特雷辛水平,C-水平和小岛细胞基因/蛋白质表达.
主要成果:
- 贝塔细胞ODC删除保护小鼠免受毒素诱导的糖尿病,表明细胞自主作用.
- 发现DFMO在T1D患者中安全且耐受良好,符合主要结局.
- 在较高剂量下,DFMO剂量依赖性降低了尿布和保留了C-水平,没有显著的免疫调节.
- 对经过DFMO处理的人类小岛的转录和蛋白质组分析揭示了mRNA翻译,蛋白质运输和分泌途径的调节.
结论:
- 在最近出现的T1D患者中,DFMO证明了安全性和耐受性.
- 这些发现表明,DFMO可能通过涉及蛋白质合成和分泌途径的细胞自主机制来保护T1D中的β细胞功能.
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