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Loss of function of phosphatidylserine synthase causes muscle atrophy in Drosophila. | LitMetric

Loss of function of phosphatidylserine synthase causes muscle atrophy in Drosophila.

Dev Biol

Department of Biology Education, Seoul National University, Seoul, 08826, Republic of Korea. Electronic address:

Published: July 2024

AI Article Synopsis

Article Abstract

Maintenance of appropriate muscle mass is crucial for physical activity and metabolism. Aging and various pathological conditions can cause sarcopenia, a condition characterized by muscle mass decline. Although sarcopenia has been actively studied, the mechanisms underlying muscle atrophy are not well understood. Thus, we aimed to investigate the role of Phosphatidylserine synthase (Pss) in muscle development and homeostasis in Drosophila. The results showed that muscle-specific Pss knockdown decreased exercise capacity and produced sarcopenic phenotypes. In addition, it increased the apoptosis rate because of the elevated reactive oxygen species production resulting from mitochondrial dysfunction. Moreover, the autophagy rate increased due to increased FoxO activity caused by reduced Akt activity. Collectively, these findings demonstrate that enhanced apoptosis and autophagy rates resulting from muscle-specific Pss knockdown jointly contribute to sarcopenia development, highlighting the key role of the PSS pathway in muscle health.

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Source
http://dx.doi.org/10.1016/j.ydbio.2024.03.006DOI Listing

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