911-B细胞对肝脏谷氨酸代谢及运动能力的调节作用 episode artwork

EPISODE · May 7, 2026 · 26 MIN

911-B细胞对肝脏谷氨酸代谢及运动能力的调节作用

from 聊聊Sci

这项研究揭示了B细胞在免疫反应之外,还发挥着通过肝-肌代谢轴调节身体运动能力的非免疫功能。研究发现,B细胞分泌的TGF-β1能够转录上调肝脏中的GLS2和SLC7A5,从而促进谷氨酰胺向谷氨酸的转化及其向外周的转运。这种由肝脏产生的谷氨酸在运动过程中会进入骨骼肌,进而激活钙信号通路并增强线粒体代谢功能。实验证明,B细胞缺失会导致循环谷氨酸水平下降,从而抑制肌肉性能并限制个体的运动耐力。相反,通过补充谷氨酸或恢复B细胞衍生的信号分子,可以有效逆转这种运动障碍。总之,该成果阐明了免疫系统如何跨器官协同代谢,以维持机体在高强度体力活动下的生理表现。References:Mao Y, Xia Z, Pan X, et al. B cell deficiency limits exercise capacity by remodeling liver glutamate metabolism[J]. Cell, 2026.前往小宇宙评论区与主播互动

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911-B细胞对肝脏谷氨酸代谢及运动能力的调节作用

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