Immune cells have a surprising role in exercise endurance

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David Hertzog (left) and Katherine High were among the winners of this year’s Breakthrough prizes.Credit: Dennis R. Wise & Colin Lenton

Three physicians who contributed to the development of the first FDA-approved gene-augmenting therapy, have picked up one of this year’s Breakthrough prizes — among the most lucrative awards in science. Luxturna, which replaces a faulty gene in the retina with a working one, has been “transformative for one form of blindness that was untreatable”, says retinal neuroscientist Omar Mahroo. Other prizes were awarded to the several hundred collaborators who contributed to a decades-long quest to measure the magnetic properties of the subatomic muon particle, and the scientists whose work led to the first approved CRISPR gene-editing therapy, Casgevy, which treats sickle-cell disease and β-thalassaemia.

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B cells — the ‘security guards’ of the immune system — also provide crucial support for muscles during exercise. B-cell-deficient mice performed worse on strength and endurance tests than did mice with healthy B-cell counts. Researchers found that the absence of B cells lowers the amount of the amino acid glutamate, which is associated with improved mitochondrial and skeletal muscle function, released by the liver. A lack of glutamate in muscle tissue and the bloodstream could explain the decrease in exercise performance, they suggest.

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Reference: Cell paper

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Source: 314 Action

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