Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Effects of Melatonin and Fluid Shear Stress on 3T3-L1 Preadipocytes

3T3-L1 지방전구세포에서 멜라토닌과 유체전단응력의 영향

  • Lee, Jeongkun (Department of Biomedical Engineering, Yonsei University) ;
  • Lee, Yeong Hun (Department of Biomedical Engineering, Yonsei University) ;
  • Park, Chae Lim (Department of Biomedical Engineering, Yonsei University) ;
  • Kim, Chi Hyun (Department of Biomedical Engineering, Yonsei University)
  • 이정근 (연세대학교 보건과학대학 의공학부) ;
  • 이영훈 (연세대학교 보건과학대학 의공학부) ;
  • 박채림 (연세대학교 보건과학대학 의공학부) ;
  • 김지현 (연세대학교 보건과학대학 의공학부)
  • Received : 2018.03.29
  • Accepted : 2018.05.18
  • Published : 2018.06.30
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Abstract

Obesity is a worldwide disease caused by the excessive proliferation of adipocytes. Multiple factors, including melatonin and physical loading, are involved in the control of obesity. Melatonin has been shown to induce apoptosis on preadipocytes while physical loading such as fluid shear stress (FSS) affects the proliferation and differentiation of adipocytes. Here, we studied the combined effects of melatonin and FSS on 3T3-L1 preadipocytes. For physical loading, preadipocytes were stimulated with a maximum dynamic fluid shear stress of 1 Pa at 1 Hz for 2 hours with/without melatonin. The experiment conditions were divided into four groups: (1) control, (2) 1 mM melatonin treatment, (3) FSS, and (4) combined 1 mM melatonin and FSS. All groups had a fixed duration time of 2 hours. ERK, p-ERK, COX-2, $C/EBP{\beta}$, $PPAR{\gamma}$, osteopontin, Bax, caspase-3 and caspase-8 proteins were assessed by Western blot analysis. GAPDH was used as a control. Results showed that combined melatonin and FSS treatment activated the ERK/MAPK pathway but not COX-2. Furthermore, combined melatonin and FSS treatment significantly decreased $C/EBP{\beta}$ and $PPAR{\gamma}$ compared to other groups. However, caspase-3 and caspase-8 did not result in significant changes. In summary, combined melatonin and FSS appears to have the potential to inhibit adipogenesis and treat obesity.

Keywords

References

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