모과추출물의 C2C12 근육세포에서 근분화 및 에너지대사조절인자 발현 증진 효과 연구
Effects of Chaenomelis Fructus Extract on the regulation of myoblasts differentiation and the expression of biogenetic factors in C2C12 myotubes
강석용, 현선영, 권예담, 박용기, 정효원,
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강석용 ( Kang Seok-Yong )
동국대학교 한방신약개발센터
현선영 ( Hyun Sun-Young )
동국대학교 한의과대학
권예담 ( Kwon Ye-dam )
동국대학교 한의과대학
박용기 ( Park Yong-Ki )
동국대학교 한방신약개발센터
정효원 ( Jung Hyo-Won )
동국대학교 한방신약개발센터
Abstract
Objective : The present study was conducted to investigate the effects of Chaenomelis Fructus (CF) on the regulation of biogenesis in C2C12 mouse skeletal muscle cells.
Methods : C2C12 myoblasts were differentiated into myotubes in 2% horse serum-containing medium for 5 days, and then treated with CF extract at different concentrations for 48 hr. The expression of muscle differentiation markers, myogenin and myosin heavy chain (MHC) and mitochondrial biogenesis-regulating factors, peroxisome proliferator- activated receptor gamma coactivator 1alpha (PGC1α), sirtuin1 (Sirt1), nuclear respiratory factor1 (NRF1) and transcription factor A, mitochondrial (TFAM), and the phosphorylation of AMP-activated protein kinase (AMPK) and acetyl-CoA carboxylase (ACC) were determined in C2C12 myotubes by reverse transcriptase (RT)-polymerase chain reaction (RT-PCR) and western blot, respectively. The cellular glucose levels and total ATP contents were measured by cellular glucose uptake and ATP assays, respectively.
Results : Treatment with CF extract (0.01, 0.02, and 0.05 ㎎/㎖) significantly increased the expression of MHC protein in C2C12 myotubes compared with non-treated cells. CF extract significantly increased the expression of PGC1α and TFAM in the myotubes. Also, CF extract significantly increased glucose uptake levels and ATP contents in the myotubes.
Conclusion : CF extract can stimulate C2C12 myoblasts differentiation into myotubes and increase energy production through upregulation of the expression of mitochondrial biogenetic factors in C2C12 mouse skeletal muscle cell. This suggests that CF can help to improve skeletal muscle function with stimulation of the energy metabolism.
키워드
Biogenetic factor; Chaenomelis Fructus; C2C12 cell; myoblast differentiation
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