산딸기 잎 물추출물의 3T3-L1 지방전구세포의 분화 및 지방생성 억제에 미치는 영향
Inhibitory Effects of Rubus crataegifolius Leaf Water Extract on Adipocyte Differentiation and Adipogenesis in 3T3-L1 Preadipocytes
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본 연구에서는 산딸기 잎의 항비만 기능성 소재로서의 가능성을 확인하기 위하여 3T3-L1 지방전구세포에 산딸기 잎 추출물을 처리한 후 중성지방 함량을 측정하고 지방생성과 관련된 여러 단백질의 발현 양상을 측정하였다. 산딸기 잎은 열수로 추출ㆍ농축하여 시료로 사용하였으며 추출물의 수율은 4.76%였다. 산딸기 잎 추출물에 의한 3T3-L1 세포 생존율을 측정한 결과, 1,000 μ g/mL 농도에서 13%의 성장 저해를 확인할 수 있었다. 이에 본 연구에서 시료 처리 농도를 500 μ g/mL까지 처리하여 실험을 진행하였다. 세포 내 중성지방의 생성은 농도의존적으로 감소하는 경향을 나타내었으며, 감소율은 대조군에 비하여 농도 100, 300, 500 μg/mL에서 각각 28.7, 40.8, 51.6 %를 나타내었다. 또한 PPARγ, C/EBPα 및 SREBP-1c, FAS 및 ACC의 발현 억제, p-AMPK 발현 증가로 지방합성이 억제되는 것을 확인하였다. 이상의 결과, 산딸기 잎 추출물이 지방세포 분화 및지방생성 관련 인자들을 조절함으로서 비만 개선 소재로서의 활용이 가능할 것으로 판단된다.
Abstract
In this study, we examined the effects of Rubus crataegifolius leaf on the inhibition of differentiation and adipogenesis of 3T3-L1 preadipocytes to confirm their potential for use as an anti-obesity functional material. Rubus crataegifolius leaves water extracted using hot water were then concentrated for use, with an extract yield of 4.76%. The result of measuring the rate of 3T3-L1 cell survival of Rubus crataegifolius leaf extract (RCLE) showed growth inhibition of 13% at a concentration of 1,000 μg/mL. Thus, in this study, experiments were performed using RCLE treatment concentrations up to 500 μg/mL. Production of triglycedie in 3T3-L1 cells showed a dose-dependent decrease, and the rate of reduction was 28.7, 40.8, and 51.6% at concentrations of 100, 300, and 500 μg/mL, respectively, compared to the control group. In addition, the results confirmed that suppression of lipogenesis was achieved by suppressing the expression of peroxisome proliferator-activated receptor γ (PPAR γ), CCAAT/ enhancer-binding protein α (C/EBP α), sterol regulatory element-binding protein-1c (SREBP-1c), fatty acid synthase (FAS), acetyl-CoA carboxylase (ACC), and increasing the expression of p-activated protein kinase (p-AMPK). Based on these results, it is believed that Rubus crataegifolius leaf extract can be used in the effort to manage obesity by regulating factors related to adipocyte differentiation and adipogenesis.
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