基因改造的乳糖菌 (Lactococcus lactis) 过分分泌IL-1Ra 改善葡萄糖代谢,调节肥胖小鼠模型中的肠道微生物群
Masahiro Yoda1, Natsumi Nomura2, Shoko Yoda3
1Graduate School of Medicine, Science and Technology, Shinshu University, Nagano, Japan, shinshu-u.ac.jp.
Journal of diabetes research
|February 4, 2026
概括
基因改造细菌分泌IL-1受体对抗剂 (NZ-IL1Ra) 被测试用于2型糖尿病治疗. 在小鼠中,NZ-IL1Ra改善了葡萄糖代谢,并减少了胰腺炎症,这表明了潜在的治疗益处.
科学领域:
- 代谢障碍 代谢障碍 代谢障碍
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
背景情况:
- 2型糖尿病 (T2DM) 涉及β细胞炎症和代谢平衡受损.
- 干白素-1β (IL-1β) 信号传递有助于T2DM的发病.
- 阻止IL-1β信号传递可以改善血糖控制和β细胞功能.
研究的目的:
- 研究一种转基因乳酸细菌 (gmLAB) 菌株NZ-IL1Ra的作用,该菌株高分泌了小鼠复合IL-1受体对手 (rmIL-1Ra).
- 在小鼠模型中评估NZ-IL1Ra对葡萄糖代谢和胰腺β细胞炎症的影响.
主要方法:
- 利用小鼠胰腺β细胞系和饮食诱导的肥胖小鼠模型.
- 管理NZ-IL1Ra并评估其对基因表达,通过口服葡萄糖耐受性测试的葡萄糖代谢及其肠道微生物群组成的影响.
主要成果:
- 纯化的rmIL-1Ra抑制了小鼠胰腺β细胞中的炎症基因表达.
- 口服NZ-IL1Ra改善了葡萄糖代谢,有效性因服用途径而异.
- 微生物群的分析表明,Lachnospiraceae属的增加,可能会影响葡萄糖代谢.
结论:
- NZ-IL1Ra显示出作为改善葡萄糖代谢的治疗剂的潜力.
- rmIL-1Ra的抗炎作用和相关的微生物群变化有助于改善代谢结果.
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