IgG介导免疫代谢功能障碍的时间动态:从急性肥胖到慢性衰老
Sohyun Kim1,2, Junghyun Kim3, Hyung-Lae Lee4
1Translational-Transdisciplinary Research Center, Clinical Research Institute, Kyung Hee University Hospital at Gangdong, College of Medicine, Kyung Hee University, Seoul, Republic of Korea.
Frontiers in immunology
|December 22, 2025
概括
免疫球蛋白G (IgG) 积聚在脂肪组织中,干扰胰岛素信号传递,并在肥胖和衰老中引起代谢功能障碍. 准IgG积累或其化为代谢性疾病提供了新的治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢性疾病研究研究.
- 肥胖和衰老研究研究.
背景情况:
- 传统上被视为循环免疫效应因子,免疫球蛋白G (IgG) 现在已知会在脂肪组织中积累,达到明显高于血的水平.
- 这种积累将IgG定位为与肥胖和衰老相关的代谢功能障碍的关键调解者.
研究的目的:
- 审查详细说明IgG在脂肪组织中的积累及其在代谢功能障碍中的作用的证据.
- 阐明IgG干扰胰岛素信号传递并促进胰岛素抵抗的机制.
- 探索潜在的治疗标和与代谢疾病中的IgG功能障碍相关的生物标志物.
主要方法:
- 审查有关IgG积累,Fc受体相互作用和糖化模式的现有文献.
- 对不同IgG糖化状态对炎症通路和胰岛素信号传递的功能结果的分析.
- 检查针对FcRn和IgG化治疗干预的治疗方法.
主要成果:
- 脂肪细胞IgG积累由新生儿Fc受体 (FcRn) 介导,并与胰岛素竞争受体结合.
- 包括炎症和胰岛素抵抗在内的IgG的功能作用取决于其糖化模式 (化与低化).
- FcRn对抗剂可以逆转胰岛素耐药性,恢复IgG化可以改善功能而无需抗体耗尽.
结论:
- 在肥胖,衰老和代谢疾病的交叉点的IgG功能障碍呈现出新的生物标志物和治疗点.
- 通过IgG的糖化分析,可以区分胰岛素敏感和胰岛素耐药的个体,从而支持精准医学.
- 转向抗体介导模型的范式转变重新定义了对代谢性疾病病原和治疗策略的理解.
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