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Newly discovered gene promotes muscle strength

Written by | 30 Jul 2022 | Male & Female Health

Researchers have identified a gene that promotes muscle strength when switched on by physical activity, unlocking the potential for the development of therapeutic treatments to mimic some of the benefits of working out.

The University of Melbourne-led study, published in Cell Metabolism, showed how different types of exercise change the molecules in our muscles. This resulted in the discovery of the new C18ORF25 gene that is activated with all types of exercise and responsible for promoting muscle strength. Animals without C18ORF25 have poor exercise performance and weaker muscles.

Dr Benjamin Parker, who led the study, said that by activating this gene, the research team could see muscles become much stronger, without them becoming necessarily bigger. ‘Identifying this gene may impact how we manage healthy ageing, diseases of muscle atrophy, sports science and even livestock and meat production,’ he said. ‘This is because promoting optimal muscle function is one of the best predictors of overall health.

‘We know exercise can prevent and treat chronic diseases including diabetes, cardiovascular disease and many cancers. Now, we hope that by better understanding how different types of exercise elicits these health promoting effects at the molecular level, the field can work towards making new and improved treatment options available.’

The study, which was conducted in collaboration with the University of Copenhagen, Denmark, identified the molecular similarities and differences between different types of exercise in human muscle biopsies by analysing proteins and how they change within cells.

‘To identify how genes and proteins are activated during and after different exercises, we performed an analysis of human skeletal muscle from a cross-over intervention of endurance, sprint and resistance exercise,’ Dr Parker said.

The experimental design allowed researchers to compare signalling responses between the exercise modalities in the same individual, relative to their pre-exercise level. This meant they could monitor how an individual responded to different types of exercise directly in their muscles.

Importantly, it also allowed the study team to identify genes and proteins that consistently change across all individuals and all types of exercise, leading to the discovery of the new gene.

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