Abstract
비만은 감염원 없이 진행되는 낮은 수준의 만성적인 전신성 염증상태로 간주되며, 만성대사질환의 원인이 된다. 본 연구에서는 미나리를 발효하여 만든 식초가 3T3-L1 지방전구세포의 분화 및 RAW 264.7 세포에서의 항염증 효과에 미치는 영향을 확인하였다. MDI (IBMX, dexamethasone, insulin)에 의해 분화가 유발된 3T3-L1 지방전구세포에 대한 미나리 식초의 분화 억제능을 Oil-red-O staining을 통해 확인하였으며, western blot법을 통해 지방세포 형성 시 중요한 전사인자인 peroxisome proliferator-activated receptor-<TEX>${\gamma}$</TEX> (PPAR-<TEX>${\gamma}$</TEX>)와 CCAAT-enhancer-binding protein <TEX>${\alpha}$</TEX> (<TEX>$C/EBP{\alpha}$</TEX>)의 발현을 감소시키는 것으로 나타났다. 또한, 미나리 식초가 lipopolysaccharide (LPS)에 의해 염증이 유발 된 RAW 264.7 세포의 nitric oxide (NO) 생성을 억제시켰으며, inducible NO synthase (iNOS)와 cyclooxygenase-2 (COX-2)의 단백질 발현을 감소시키는 것을 확인하였다. 이러한 결과들을 통해 미나리 발효 식초는 지방세포 분화와 염증 억제 효과를 가지고 있음을 확인하였다. 따라서 미나리 발효 식초는 대사성 질환을 예방할 수 있는 천연물 소재로 이용 가능할 것으로 생각된다. Obesity, which is characterized by a state of mild chronic inflammation, is known to cause metabolic diseases. This study was carried out to investigate the effect of lyophilized dropwort vinegar powder (DVP) on adipocyte differentiation and inflammation in T3-L1 preadipocyte and RAW 264.7 macrophage cell lines. DVP inhibited the differentiation of 3T3-L1 preadipocytes induced by a mixture of IBMX, dexamethasone, and insulin (MDI). Western blot analysis of cell lysates showed that DVP decreased the levels of two major transcription factors involved in adipogenesis, peroxisome proliferator- activated receptor-<TEX>${\gamma}$</TEX> (PPAR-<TEX>${\gamma}$</TEX>) and CCAAT-enhancer-binding protein <TEX>${\alpha}$</TEX> (<TEX>$C/EBP{\alpha}$</TEX>). DVP also significantly suppressed lipopolysaccharide (LPS)-induced production of nitric oxide (NO), and this was accompanied by a decrease in inducible NO synthase (iNOS) and cyclooxygenase-2 (COX-2) protein expression. These results demonstrate that DVP inhibits MDI-induced adipocyte differentiation of 3T3-L1 cells and LPS-induced inflammation in RAW 264.7 macrophage cells. The findings indicate that this natural product may be a good candidate as to prevent metabolic diseases.
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