Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Artemisia scoparia Inhibits Adipogenesis in 3T3-L1 Pre-adipocytes by Downregulating the MAPK Pathway

비쑥 추출물이 3T3-L1 지방세포 분화 및 MAPK 신호 전달 경로에 미치는 영향

  • Oh, Jung Hwan (Department of Food and Nutrition, College of Medical and Life Sciences, Silla University) ;
  • Karadeniz, Fatih (Department of Food and Nutrition, College of Medical and Life Sciences, Silla University) ;
  • Seo, Youngwan (Division of Marine Bioscience, College of Ocean Science and Technology, Korea Maritime and Ocean University) ;
  • Kong, Chang-Suk (Department of Food and Nutrition, College of Medical and Life Sciences, Silla University)
  • 오정환 (신라대학교 의생명과학대학 식품영양학과) ;
  • 파티 카라데니즈 (신라대학교 해양식의약소재융합기술연구소) ;
  • 서영완 (한국해양대학교 해양과학기술대학 해양환경.생명과학부) ;
  • 공창숙 (신라대학교 의생명과학대학 식품영양학과)
  • Received : 2018.04.30
  • Accepted : 2018.07.04
  • Published : 2018.09.30
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Abstract

Obesity is epidemic worldwide and has reportedly been linked to the progression of several metabolic and cardiovascular diseases. The natural products are decreasing the side effects of medicines used for obesity and also have health benefits dut to their numerous bioactive compounds. In this context, Artemisia scoparia is a widespread plant that has been suggested as possessing various types of bioactivity. In this study, the crude extract from A. scoparia (ASE) was tested for its ability to suppress adipogenesis in mouse 3T3-L1 pre-adipocytes. The molecular pathway by which ASE affects differentiation of 3T3-L1 cells was also investigated. The introduction of ASE to differentiating 3T3-L1 pre-adipocytes resulted in suppressed adipogenesis, as confirmed by decreased intracellular lipid accumulation. The differentiating cells treated with 10 and $100{\mu}g/ml$ of ASE showed 21.9 and 29.0% less lipid accumulation, respectively, than untreated adipocytes. In addition, the results indicated that ASE treatment lowered the expression of the adipogenesis-related factors $PPAR{\gamma}$, $C/EBP{\alpha}$, and SREBP-1c. Furthermore, treating with ASE notably decreased levels of phosphorylated p38, ERK, and JNK in 3T3-L1 adipocytes. These results indicate that ASE exhibits significant anti-adipogenesis activity by downregulating the MAPK and $PPAR{\gamma}$ pathways during the differentiation of 3T3-L1 pre-adipocytes. Therefore, A. scoparia may be a potential source of natural products against obesity.

비쑥(Atermisia scoparia)은 국화과에 속하는 한해살이 풀로서 유라시아 지역 분포하며, 염생습지에 자생하는 염생식물의 일종이다. 비쑥은 민간요법에서 이뇨제, 소염제, 간염치료제로 사용되어 왔으며, 비쑥에서 분리한 플라보노이드, 쿠마린 화합물의 항산화, 항염증 등의 생리활성이 보고되어 있다. 본 연구에서는 비쑥 추출물이 3T3-L1 지방전구세포 모델에서 지방세포 내에서의 중성지방 생성 및 지방세포 분화조절 인자 발현에 미치는 영향을 검토하였다. 지방전구세포 3T3-L1을 지방세포로 분화하여 Oil Red O 염색법으로 지방세포 분화 정도를 측정한 결과, 비쑥 추출물 처리군에서 농도 의존적으로 지방세포 형성이 억제되었다. 또한 지방세포 분화 관련 인자인 $PPAR{\gamma}$, $C/EBP{\alpha}$, SREBP-1c의 발현을 mRNA 및 단백질 수준에서 확인한 결과, 비쑥 추출물을 처리한 군에서 지방세포분화 인자 발현이 감소하는 것으로 나타났다. 지방세포 분화 및 증식에 관여하는 것으로 알려져 있는 MAPK 신호전달 경로를 확인한 결과 비쑥 추출물을 처리한 군에서 p38, ERK, JNK의 인산화가 억제되었다. 이를 통해 비쑥 추출물은 MAPK 신호전달 경로를 통한 지방세포 분화 인자 조절을 통해 지방 생성과 합성을 억제하는 것으로 사료된다. 따라서 본 연구 결과로부터 비쑥 추출물의 MAPK 신호전달 경로 억제를 통한 항비만 효과를 확인하였으며, 나아가 건강 기능성 식품 소재로서의 개발 가능성이 기대된다.

Keywords

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