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Anti-obesity effect of Amomum taso-ko ethanol extract in 3T3-L1 adipocytes

3T3-L1 지방세포에서 초과 에탄올 추출물의 항비만 효과

  • Lee, Jung A (Bio-center, Gyeonggido Business and Science Accelerator) ;
  • Park, Young Jin (Bio-center, Gyeonggido Business and Science Accelerator) ;
  • Jeong, Wonsik (Bio-center, Gyeonggido Business and Science Accelerator) ;
  • Hong, Seong Su (Bio-center, Gyeonggido Business and Science Accelerator) ;
  • Ahn, Eun-Kyung (Bio-center, Gyeonggido Business and Science Accelerator)
  • Received : 2016.10.10
  • Accepted : 2016.10.31
  • Published : 2017.03.30

Abstract

Amomum tsao-ko used as a traditional oriental herbal medicine, is indigenous to several Asia countries. In this study, we investigated anti-obesity activity of the ethanol extract of Amomum Taso-ko (A. tsao-ko). The ethanol extract of A. tsao-ko inhibited adipocyte differentiation using Oil Red O assay in 3T3-L1 cells. Inhibitory effect of the ethanol extract of A. tsao-ko on adipogenesis was modulated by down-regulation adipogenic transcriptional factor such as peroxisome proliferator-activated receptor ${\gamma}$ ($PPAR{\gamma}$), CCAAT-enhancer-binding protein ${\alpha}$ ($C/EBP{\alpha}$) and suppressed expression of fatty acid synthase, aP2, and resistin. We demonstrated that A. tsao-ko significantly inhibited adipogenesis and reduced $PPAR{\gamma}$ and $C/EBP{\alpha}$ expression in a dose-dependent manner. These results suggest that A. tsao-ko has an anti-obesity effect by inhibition of adipogenic transcription factor and adipocyte-specific genes in 3T3-L1 cells.

본 연구에서는 초과 에탄올 추출물을 이용하여 3T3-L1 지방전구세포에서 지방세포로의 분화 연구를 통해 항비만 활성을 확인하고자 하였다. 초과 에탄올 추출물에 의한 지방세포 분화 억제 활성 및 지방형성에 미치는 영향을 확인하기 위해 3T3-L1 지방전구세포에 분화를 유도하면서 추출물을 농도별로 처리하였고, 그 결과 초과 에탄올 추출물은 3T3-L1 지방전구세포에서 지방세포로의 분화를 농도에 의존적으로 감소시켰다. 이 같은 활성에 대한 작용기전을 알아보기 위해 지방세포 분화에 중요한 역할을 담당하고 있는 peroxisome proliferator-activated receptor ${\gamma}$ ($PPAR{\gamma}$)와 CCAAT-enhancer-binding protein ${\alpha}$ ($C/EBP{\alpha}$), 그리고 지방세포 분화에 관여하는 유전자들의 활성을 확인해 보았다. 실험 결과 초과 에탄올 추출물은 $PPAR{\gamma}$$C/EBP{\alpha}$의 유전자 및 단백질 발현을 유의적으로 감소시켰고 지방세포 분화에 관여하는 adipogenesis marker 유전자들의 발현을 억제 시켰다. 따라서 초과 에탄올 추출물은 지방분화 및 adipogenesis 억제 활성을 통해 항비만 소재로의 가능성이 있을 것으로 기대한다.

Keywords

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