Arginine promotes skeletal muscle fiber type transformation from fast-twitch to slow-twitch via Sirt1/AMPK pathway. 2018

Xiaoling Chen, and Yafei Guo, and Gang Jia, and Guangmang Liu, and Hua Zhao, and Zhiqing Huang
Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan 611130, PR China.

This study investigated the effect of arginine on skeletal muscle fiber type transformation in mice and in C2C12 myotubes. Our data showed that dietary supplementation of arginine in mice significantly up-regulated the slow myosin heavy chain (MyHC), troponin I-SS, sirtuin1 (Sirt1) and peroxisome proliferator activated receptor-γ coactivator-1α (PGC-1α) protein expressions, as well as significantly down-regulated the fast MyHC protein expression. In C2C12 myotubes, arginine significantly increased the protein level of slow MyHC and the number of slow MyHC-positive cells, as well as significantly decreased the protein level of fast MyHC and the number of fast MyHC-positive cells. We also showed that arginine increased the activities of succinic dehydrogenase and malate dehydrogenase and decreased the activity of lactate dehydrogenase in mice and in C2C12 myotubes. Here we found that AMP-activated protein kinase (AMPK) was activated by arginine in mice and in C2C12 myotubes. However, inhibition of AMPK activity by compound C significantly attenuated the effects of arginine on slow MyHC and fast MyHC expressions in C2C12 myotubes. Finally, we showed that inhibition of Sirt1 expression by EX527 attenuated arginine-induced increase in the protein levels of phospho-AMPK and slow MyHC, the mRNA level of nitric oxide synthase (NOS) and the contents of NOS and NO, as well as decrease in fast MyHC protein level. Together, our findings indicated that arginine promotes skeletal muscle fiber type switching from fast-twitch to slow-twitch via Sirt1/AMPK pathway.

UI MeSH Term Description Entries
D008297 Male Males
D010766 Phosphorylation The introduction of a phosphoryl group into a compound through the formation of an ester bond between the compound and a phosphorus moiety. Phosphorylations
D004798 Enzymes Biological molecules that possess catalytic activity. They may occur naturally or be synthetically created. Enzymes are usually proteins, however CATALYTIC RNA and CATALYTIC DNA molecules have also been identified. Biocatalyst,Enzyme,Biocatalysts
D005786 Gene Expression Regulation Any of the processes by which nuclear, cytoplasmic, or intercellular factors influence the differential control (induction or repression) of gene action at the level of transcription or translation. Gene Action Regulation,Regulation of Gene Expression,Expression Regulation, Gene,Regulation, Gene Action,Regulation, Gene Expression
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D001120 Arginine An essential amino acid that is physiologically active in the L-form. Arginine Hydrochloride,Arginine, L-Isomer,DL-Arginine Acetate, Monohydrate,L-Arginine,Arginine, L Isomer,DL Arginine Acetate, Monohydrate,Hydrochloride, Arginine,L Arginine,L-Isomer Arginine,Monohydrate DL-Arginine Acetate
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus
D055372 AMP-Activated Protein Kinases Intracellular signaling protein kinases that play a signaling role in the regulation of cellular energy metabolism. Their activity largely depends upon the concentration of cellular AMP which is increased under conditions of low energy or metabolic stress. AMP-activated protein kinases modify enzymes involved in LIPID METABOLISM, which in turn provide substrates needed to convert AMP into ATP. 5'-AMP-Activated Protein Kinase,AMP-Activated Kinase,AMP-Activated Protein Kinase,AMP-Activated Protein Kinase alpha Subunit,AMP-Activated Protein Kinase alpha Subunits,AMP-Activated Protein Kinase beta Subunit,AMP-Activated Protein Kinase beta Subunits,AMP-Activated Protein Kinase gamma Subunit,AMP-Activated Protein Kinase gamma Subunits,PRKAA,5' AMP Activated Protein Kinase,AMP Activated Kinase,AMP Activated Protein Kinase,AMP Activated Protein Kinase alpha Subunit,AMP Activated Protein Kinase alpha Subunits,AMP Activated Protein Kinase beta Subunit,AMP Activated Protein Kinase beta Subunits,AMP Activated Protein Kinase gamma Subunit,AMP Activated Protein Kinase gamma Subunits,AMP Activated Protein Kinases
D056564 Sirtuin 1 A sirtuin family member found primarily in the CELL NUCLEUS. It is an NAD-dependent deacetylase with specificity towards HISTONES and a variety of proteins involved in gene regulation. Silent Mating Type Information Regulation 2 Homolog 1,Sirt1
D018485 Muscle Fibers, Skeletal Large, multinucleate single cells, either cylindrical or prismatic in shape, that form the basic unit of SKELETAL MUSCLE. They consist of MYOFIBRILS enclosed within and attached to the SARCOLEMMA. They are derived from the fusion of skeletal myoblasts (MYOBLASTS, SKELETAL) into a syncytium, followed by differentiation. Myocytes, Skeletal,Myotubes,Skeletal Myocytes,Skeletal Muscle Fibers,Fiber, Skeletal Muscle,Fibers, Skeletal Muscle,Muscle Fiber, Skeletal,Myocyte, Skeletal,Myotube,Skeletal Muscle Fiber,Skeletal Myocyte

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