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酸盐氧化维持B细胞抗原特异激活以恶化MASH
Fanta Barrow1, Haiguang Wang1, Gavin Fredrickson1
1Department of Integrative Biology & Physiology, University of Minnesota Medical School, Minneapolis MN 55455, USA.
bioRxiv : the preprint server for biology
|November 28, 2023
概括
乙细胞通过氧化酸盐来增加能量生产,从而驱动代谢功能障碍相关的脂肪肝炎 (MASH). 限制B细胞受体信号减少MASH的严重程度,包括炎症和纤维化.
科学领域:
- 免疫学 免疫学 免疫学
- 肝病学 肝病学是一种肝病学.
- 代谢疾病 代谢疾病
背景情况:
- 代谢功能障碍相关的脂肪肝炎 (MASH) 涉及慢性炎症和纤维化,显著影响肝脏健康.
- B细胞通过细胞因子和抗体对MASH的致病产生作出贡献,但纤维化促进和代谢适应的机制尚不清楚.
研究的目的:
- 阐明B细胞促进MASH病变的机制,重点关注纤维化和代谢适应.
- 研究B细胞受体 (BCR) 特定反应和氧化酸化 (OXPHOS) 在MASH发育中的作用.
主要方法:
- 对MASH模型肝脏B细胞种群的分析.
- 研究B细胞的代谢适应,特别是通过OXPHOS通过pyruvate氧化推动的ATP生产.
- 实验性操纵B细胞受体信号和pyruvate氧化以评估小鼠MASH进展.
主要成果:
- 一个成熟的B细胞的子集与增高的细胞因子反应积聚在MASH肝脏,促进炎症.
- 乙细胞通过OXPHOS增加ATP的产生,由依赖BCR的方式的pyruvate氧化为燃料.
- 阻断pyruvate氧化或BCR信号减弱MASH,减少脂肪酸,炎症和纤维化,T细胞和巨细胞的参与减少.
结论:
- B细胞抗原特异性反应,特别是那些涉及到pyruvate氧化和BCR信号的反应,是MASH的关键驱动因素.
- 针对B细胞代谢和BCR通路提供了一个潜在的治疗策略,以减轻MASH进展及其相关的肝损伤.
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