期刊
CURRENT OPINION IN CLINICAL NUTRITION AND METABOLIC CARE
卷 16, 期 6, 页码 638-644出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MCO.0b013e3283653ec5
关键词
amino acid sensing and signaling; mechanistic target of rapamycin complex 1; protein synthesis; transceptor
资金
- NIH/National Institute of Arthritis and Musculoskeletal and Skin Disease [R01AR049877]
- NIH/National Institute on Aging [P30AG024832, R01AG030070]
- NIH Clinical and Translational Science Award from the National Center for Advancing Translational Sciences [UL1TR000071]
Purpose of reviewTo highlight recent research on amino acid sensing and signaling and the role of amino acid transporters in the regulation of human skeletal muscle protein metabolism.Recent findingsThe mechanisms that sense amino acid availability and activate mechanistic target of rapamycin complex 1 signaling and protein synthesis are emerging, with multiple new proteins and intracellular amino acid sensors recently identified. Amino acid transporters have a role in the delivery of amino acids to these intracellular sensors and new findings provide further support for amino acid transporters as possible extracellular amino acid sensors. There is growing evidence in human skeletal muscle that amino acid transporter expression is dynamic and responsive to various stimuli, indicating amino acid transporters may have a unique role in the regulation of human skeletal muscle adaptation.SummaryThere is a clear need to further examine the role of amino acid transporters in human skeletal muscle and their link to cellular amino acid sensing and signaling in the control of protein metabolism. A better understanding of amino acid transport and transporters will allow us to optimize nutritional strategies to accelerate muscle health and improve outcomes for clinical populations.
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