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Ostarine-Induced Myogenic Differentiation in C2C12, L6, and Rat Muscles

Department of Animal Physiology, Biochemistry and Biostructure, Poznan University of Life Sciences, 60-637 Poznan, Poland
Department of Preclinical Sciences and Infectious Diseases, Faculty of Veterinary Medicine and Animal Science, University of Life Sciences, 60-637 Poznan, Poland
Author to whom correspondence should be addressed.
Academic Editors: Daniel Taillandier and Kurt A. Jellinger
Int. J. Mol. Sci. 2022, 23(8), 4404;
Received: 8 March 2022 / Revised: 13 April 2022 / Accepted: 14 April 2022 / Published: 15 April 2022
Ostarine (also known as enobosarm or Gtx-024) belongs to the selective androgen receptor modulators (SARMs). It is a substance with an aryl-propionamide structure, classified as a non-steroidal compound that is not subjected to the typical steroid transformations of aromatization and reduction by α5 reductase. Despite ongoing research on ostarine, knowledge about it is still limited. Earlier studies indicated that ostarine may affect the metabolism of muscle tissue, but this mechanism has not been yet described. We aimed to investigate the effect of ostarine on the differentiation and metabolism of muscle. Using C2C12 and L6 cells, as well as muscles obtained from rats administered ostarine, we showed that ostarine stimulates C2C12 and L6 proliferation and cell viability and that this effect is mediated by androgen receptor (AR) and ERK1/2 kinase activation (p < 0.01). We also found that ostarine stimulates muscle cell differentiation by increasing myogenin, MyoD, and MyH expression in both types of cells (p < 0.01). Moreover, pharmacological blocking of AR inhibits the stimulatory effect of ostarine. We further demonstrated that 30 days of ostarine administration increases myogenin, MyoD, and MyH expression, as well as muscle mass, in rats (p < 0.01). Based on our research, we conclude that ostarine stimulates muscle tissue proliferation and differentiation via the androgen receptor. View Full-Text
Keywords: SARM; ostarine; muscle; C2C12 cells; L6 cells SARM; ostarine; muscle; C2C12 cells; L6 cells
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MDPI and ACS Style

Leciejewska, N.; Kołodziejski, P.A.; Sassek, M.; Nogowski, L.; Małek, E.; Pruszyńska-Oszmałek, E. Ostarine-Induced Myogenic Differentiation in C2C12, L6, and Rat Muscles. Int. J. Mol. Sci. 2022, 23, 4404.

AMA Style

Leciejewska N, Kołodziejski PA, Sassek M, Nogowski L, Małek E, Pruszyńska-Oszmałek E. Ostarine-Induced Myogenic Differentiation in C2C12, L6, and Rat Muscles. International Journal of Molecular Sciences. 2022; 23(8):4404.

Chicago/Turabian Style

Leciejewska, Natalia, Paweł A. Kołodziejski, Maciej Sassek, Leszek Nogowski, Emilian Małek, and Ewa Pruszyńska-Oszmałek. 2022. "Ostarine-Induced Myogenic Differentiation in C2C12, L6, and Rat Muscles" International Journal of Molecular Sciences 23, no. 8: 4404.

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