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在自身免疫性糖尿病中,TRPV1+感官神经元控制β细胞应激和小岛炎症
Rozita Razavi1, Yin Chan, F Nikoo Afifiyan
1Neurosciences and Mental Health Program, The Hospital for Sick Children, Research Institute, University of Toronto, Toronto, ON, Canada, M5G 1X8.
Cell
|December 19, 2006
概括
表达TRPV1的胰腺感觉神经元调节小岛炎症和1型糖尿病中的胰岛素抵抗. 消除这些神经元可以在易感小鼠中预防糖尿病,揭示了它在疾病发展中的关键作用.
科学领域:
- 免疫学 免疫学 免疫学
- 神经科学是一个神经科学.
- 内分泌学 在内分泌学.
背景情况:
- 1型糖尿病涉及T细胞介导的胰腺β细胞的破坏,导致胰岛素缺乏.
- 吸引或限制自身反应性淋巴细胞进入胰腺的因素尚未完全理解.
研究的目的:
- 为了研究TRPV1表达胰腺感觉神经元在1型糖尿病发病过程中的作用.
- 为了确定这些神经元是否影响岛屿炎症和胰岛素抵抗.
主要方法:
- 使用易患糖尿病的NOD小鼠和转基因小鼠模型 (例如,trpv1(-/-) 小鼠).
- 消除了TRPV1(+) 神经元,并评估了胰岛炎,糖尿病发病率和胰岛素抵抗.
- 研究了TRPV1变体的功能和物质P的递送效果.
主要成果:
- 在NOD小鼠中消除TRPV1(+) 神经元可以预防胰岛炎和糖尿病,尽管T细胞具有持续的病原性.
- 发现TRPV1(+) 神经元可以控制岛屿炎症和胰岛素抵抗.
- 鉴定了一种功能低下的TRPV1突变体 (TRPV1(NOD),与抑郁的神经性炎症有关.
- 在NOD小鼠中,物质P的输送逆转了糖尿病和相关病理.
- 缺乏TRPV1 (trpv1(-/-)) 的小鼠表现出增强的胰岛素敏感性.
结论:
- TRPV1(+) 胰腺感觉神经元在β细胞功能和1型糖尿病病理学中发挥着基本作用.
- 这些神经元是岛屿炎症和胰岛素抵抗的关键调节者.
- 准TRPV1 (((+) 神经元或它们的信号通路可能为1型糖尿病提供新的治疗策略.
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