B Cell Deficiency Limits Exercise Capacity via Liver Glutamate Metabolism
Recent research published in the journal Cell reveals that B cells play a critical, immune-independent role in regulating exercise capacity through metabolic signaling between the liver and muscles. The study demonstrates that B cell deficiency significantly limits muscle performance. Mechanistically, B cells secrete Transforming Growth Factor-beta 1 (TGF-β1), which enhances the conversion of glutamine to glutamate in the liver. This process increases glutamate levels in both the blood and muscle tissues. Elevated glutamate subsequently promotes muscle calcium signaling and improves mitochondrial function, thereby positively regulating overall exercise capacity. These findings highlight a novel physiological function of B cells beyond traditional immune responses, establishing a direct link between immune cell activity and metabolic health. By identifying this liver-muscle metabolic axis, the research provides new insights into how cellular interactions influence physical endurance and muscle efficiency, potentially opening avenues for therapeutic interventions targeting metabolic disorders or exercise intolerance.
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B Cell Deficiency Limits Exercise Capacity via Liver Glutamate Metabolism
Recent research published in the journal Cell reveals that B cells play a critical, immune-independent role in regulating exercise capacity through metabolic signaling between the liver and muscles. The study demonstrates that B cell deficiency significantly limits muscle performance. Mechanistically, B cells secrete Transforming Growth Factor-beta 1 (TGF-β1), which enhances the conversion of glutamine to glutamate in the liver. This process increases glutamate levels in both the blood and muscle tissues. Elevated glutamate subsequently promotes muscle calcium signaling and improves mitochondrial function, thereby positively regulating overall exercise capacity. These findings highlight a novel physiological function of B cells beyond traditional immune responses, establishing a direct link between immune cell activity and metabolic health. By identifying this liver-muscle metabolic axis, the research provides new insights into how cellular interactions influence physical endurance and muscle efficiency, potentially opening avenues for therapeutic interventions targeting metabolic disorders or exercise intolerance.
Cell