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线粒细胞缺陷在淋巴细胞性甲状腺炎中加剧炎症和异常扩散
Han Sai Lee1,2, Jinju Lee1,2, Hyun-Ju An3
1Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, South Korea.
Thyroid : official journal of the American Thyroid Association
|October 14, 2024
概括
甲状腺炎中的线粒细胞衰变缺陷通过EGFR通路增加ROS,细胞因子和安菲瑞古林 (AREG) 引起炎症和增生. 切图西马布治疗缓解了异常细胞的增殖.
科学领域:
- 内分泌学 在内分泌学.
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
背景情况:
- 在淋巴细胞性甲状腺炎 (LT) 中观察到线粒体功能障碍和缺陷的线粒体.
- 损害线粒在LT病原发生中的确切作用尚不清楚.
研究的目的:
- 为了研究 mitophagy 失调在甲状腺病原发生中的作用.
- 阐明在LT.中将线粒缺陷与炎症和增生联系在一起的机制.
主要方法:
- 对人类甲状腺 (GTEx) 和Pink1缺乏的小鼠RNA测序数据的分析.
- 人类和小鼠甲状腺组织的组织病理学评估.
- 在用PINK1siRNA或线粒细胞衰减抑制剂治疗的人类甲状腺细胞中评估细胞增殖,ROS产生和细胞因子分泌.
主要成果:
- 人类LT甲状腺中PINK1表达的减少.
- 在小鼠中,Pink1缺乏导致甲状腺炎症和增生.
- 线粒缺陷增加了ROS,促炎细胞因子和免疫细胞招募.
- 在甲状腺细胞中增加安菲瑞古林 (AREG) 分泌和降低CREB表达,甲状腺细胞中出现线粒细胞衰变缺陷.
- 使用 cetuximab 抑制 EGFR 降低了异常细胞的增殖.
结论:
- 甲状腺髓缺陷通过ROS,细胞因子和免疫细胞招募加剧炎症.
- 线粒缺陷通过EGFR通路通过上调AREG.促进甲状腺增生.
- 向EGFR通路可能为LT相关的增生症提供治疗潜力.
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