녹차의 폴리페놀류인 에피갈로카테킨-3-갈레이트에 의한 항노화, 항비만 및 항암효과에 대한 비교 분석

임은지(Eun-Ji Lim),김민재(Min-Jae Kim),김현지(Hyeon-Ji Kim),이성호(Sung-Ho Lee),전병균(Byeong-Gyun Jeon) 한국생명과학회 2018 생명과학회지 Vol.28 No.10

본 연구에서는 다양한 사람의 암세포주(SNU-601, MKN74, AGS, MCF-7, U87-MG 및 A-549)와 정상세포주[MRC-5 섬유아세포, 사랑니 유래 중간엽 줄기세포(DSC), 3T3-L1 생쥐의 지방전구세포]에 녹차에 포함되어 있는 epigallocatechin-3-gallate (EGCG)를 처리하여 세포 증식, 세포 노화, 지방세포로의 분화, 말단소립복원효소 활성과 암세포의 전이 능력 등을 검증하여 항노화, 항비만 및 항암 효과를 서로 비교 조사하였다. MTT 분석에서 다양한 암세포주는 정상세포주보다 유의적으로 낮은 반억제농도값을 나타내었다. 10 uM의 EGCG가 포함된 배양액에서 정상체세포인 MRC-5와 DSC를 5 계대배양한 결과 세포증식 및 세포 노화에 큰 변화를 관찰하지 못하였고, 3T3-L1 생쥐의 지방전구세포를 지방분화 배양액에 EGCG를 첨가하여 지방세포로의 분화 억제를 유도하였지만 지방세포로의 분화를 역시 억제하지 못하였다. 그러나 여러 다양한 암세포주에 10 uM의 EGCG가 포함된 배양액에 배양한 결과 암세포의 세포증식 억제, 세포노화 유도, 말단소립복원효소 활성과 암세포의 전이 능력이 현저히 감소됨을 관찰하여 EGCG는 항노화나 항비만 효과보다는 항암효과에 더 효율적인 것으로 관찰되었고, 적당한 농도에서 잠재적인 항암물질로의 한 종류로 판단된다. The study compared the anti-aging, anti-adipogenesis, and anti-tumor effects of epigallocatechin-3-gallate (EGCG) in various cancer cell lines (SNU-601, MKN74, AGS, MCF-7, U87-MG, and A-549) and normal cell lines (MRC-5 fibroblasts, dental tissue-derived mesenchymal stem cells [DSC], and 3T3-L1 pro-adipocytes). Half inhibitory concentration (IC50) values were significantly (p<0.05) higher in normal cell lines (~50 uM), when compared to that in cancer cell lines (~10 uM). For anti-aging effects, MRC-5 and DSC were exposed to 10 uM EGCG for up to five passages that did not display any growth arrest. Population doubling time and senescence-related β-galactosidase (SA-β-gal) activity in treated cells were similar to untreated cells. For anti-adipogenic effects, mouse 3T3-L1 pre-adipocytes were induced to adipocytes in an adipogenic differentiation medium containing 10 uM EGCG, but adipogenesis in 3T3-L1 cells was not inhibited by EGCG treatment. For anti-tumor effects, the cancer cell lines were treated with 10 uM EGCG. PDT was significantly (p<0.05) increased in EGCG-treated SNU-601, AGS, MCF-7, and U87-MG cancer cell lines, except in MKN74 and A-549. The level of telomerase activity and cell migration capacity were significantly (p<0.05) reduced, while SA-β-gal activity was highly up-regulated in EGCG treated-cancer cell lines, when compared to that in untreated cancer cell lines. Our results have demonstrated that EGCG treatment induces anti-tumor effects more efficiently as noted by decreased cell proliferation, cell migration, telomerase activity, and increased SA-β-gal activity than inducing anti-aging and anti-adipogenesis. Therefore, EGCG at a specific concentration can be considered for a potential anti-tumor drug.

Fisetin의 항산화 및 항비만 활성 평가를 통한 미용기능식품 소재로서의 가능성 탐색

손명수,김령현,송지혜,권오준,이아름,김혜옥,노성수,김교남 한국피부과학연구원 2016 아시안뷰티화장품학술지 Vol.14 No.1

Abstract Purpose: Although several physiological properties of fisetin have been reported, the potential of fisetin as a nutri-cosmetics material has been not considered. Therefore, anti-oxidant and anti-adipogenic effects in 3T3-L1 cells of fisetin were evaluated and its potential as a nutri-cosmetic ingredient was discussed. Methods: To test anti-oxidant activity of fisetin, ABTS radical scavenging assay was used and the cytotoxicity of fisetin in 3T3-L1 preadipocytes was evaluated by EZ-cytox assay. The inhibitory effect of fisetin against 3T3-L1 adipogenesis was evaluated in various stage of adipogenesis such as pre-adipogenic (Day -2~0), early (Day 0~2), intermediate (Day 2~4), and terminal stage (Day 4~6) by oil red o (ORO) staining. The mRNA expression levels of transcriptional factors were performed by RT-PCR analysis. Results: We observed that the scavenging activity of fisetin against ABTS radicals was stronger than that of ascorbic acid, a well-known soluble anti-oxidant. Fisetin treatment resulted in the decreased triglyceride content of 3T3-L1 cells in a dose-dependent manner. Lipid accumulation of 3T3-L1 adipocytes was significantly inhibited by fisetin treatment by 54.61%, 61.74%, 56.82%, and 26.67%, respectively when compared to adipocytes control. The anti-adipogenic effect of fisetin was strongly limited in the pre-adipogenic, early, and intermediate stages of 3T3-L1 adipogenesis. In addition, the fisetin treatment down-regulated mRNA expression levels of C/EBPβ, leptin, and adiponectin in mature 3T3-L1 adipocytes. Conclusion: These results suggested that fisetin has the potential as a nutri-cosmetic material which possess anti-oxidant and anti-adipogenic activities. 목적: 비록 fisetin의 다양한 생리활성이 보고되었음에도 불구하고, fisetin의 미용기능식품 소재로서의 가능성에 대한 연구는 미비한 실정이다. 그러므로, 본 연구에서는 fisetin의 항산화 활성 및 3T3-L1 세포에서 fisetin의 항비만 활성을 평가하고, 더 나아가 미용기능식품 소재로서 fisetin의 가능성에 대해 고찰하였다. 방법: Fisetin의 항산화 활성은 ABTS 라디칼 소거능을 통해 평가하였다. 3T3-L1 세포에서 fisetin의 세포독성은 EZ-cytox assay 를 이용해 분석하였으며, fisetin의 지방축적 억제활성은 triglyceride 함량 분석을 통해 평가하였다. 또한 fisetin이 지방세포 분화전기(Day -2~0), 분화초기(Day 0~2), 분화중기(Day 2~4), 분화후기(Day 4~6)와 같은 3T3-L1 adipogenesis의 다양한 단계 중어느 단계에서 억제 효과를 가지는지 ORO 염색법을 통해 알아보았다. 3T3-L1 세포에서 전사인자들의 mRNA 발현 수준은 RTPCR을통해 분석하였다. 결과: Fisetin은 항산화 물질로 잘 알려진 비타민C (L-ascorbic acid)보다 강한 ABTS 라디칼 소거활성을 나타내었다. 또한 fisetin 을 24 h 동안 처리하였을 때, 200 μM 이하의 농도에서 3T3-L1 세포생존율에 영향을 미치지 않았다. 따라서 fisetin을 100 μM 이하의 농도로 다음 실험에 이용하였다. 3T3-L1 세포에서 triglyceride 함량은 농도 의존적으로 감소시켰다. Fisetin이 adipogenesis 어떠한 단계에서 지방축적 억제활성을 나타내는지 알아보았을 때 분화전기(Day -2~0), 분화초기(Day 0~2), 그리고 분화중기(Day 2~4)에 가장 높은 억제활성을 나타내었다. 또한 fisetin에 의한 adipogenesis의 억제는 C/EBPβ, leptin, 그리고 adiponectin 의 감소된 mRNA 발현수준에 의한 것으로 사료된다. 결론: 본 연구는 fisetin이 항산화 및 항비만 활성을 통하여 미용기능식품 소재로서 충분히 활용될 수 있음을 시사한다

주박과 누룩의 추출물에 의한 지방세포형성억제, 항염증 및 항성장 활성

손정빈(Jung-Bin Son),이승훈(Seung Hoon Lee),손호용(Ho-Yong Sohn),신우창(Woo-Chang Shin),김종식(Jong-Sik Kim) 한국생명과학회 2015 생명과학회지 Vol.25 No.7

본 연구에서는 5종의 주박과 누룩의 추출물 및 유기용매 분획물을 제조하고, 이들에 의한 지방세포형성억제, 항염증 및 항성장 활성을 연구하였다. 지방세포형성억제 활성 연구를 위하여 마우스 전지방 세포인 3T3-L1 세포주에 지방세포형성을 유도한 후 추출물 및 분획물 5종을 처리하였다. 처리한 시료 중 W-Ju의 에틸아세테이트 분획물(WPAc)이 가장 뚜렷한 지방세포형성 억제 활성을 보여 주었다. 이것은 oil red O 염색과 pro-adipogenic 유전자의 발현 감소에 의해 증명되었다. 또한, WPAc의 처리는 시간 의존적으로 PPAR-gamma 유전자의 발현을 감소시켰다. 항염증 연구를 위하여 RAW 264.7 세포주에서 5종의 시료에 의한 nitric oxide (NO) 생산에 미치는 영향을 연구하였다. 5종의 시료 중 B-Ju의 에틸아세테이트 분획물(PAc)의 처리에 의해 LPS로 활성화된 RAW 264.7 세포에서 NO 생산이 가장 높게 저해되었고, 또한 농도 의존적인 저해 양상을 보여 주었다. 게다가, PAc는 인간 대장암 세포주인 HCT116의 세포 생존율을 현저하게 감소시켰으며, 또한 농도의존적인 생존율 저해 양상을 보여 주었다. 또한, PAc는 NAG-1과 ATF3 유전자의 발현도 농도 의존적으로 감소 시켰다. 종합적으로, 이러한 연구결과는 주박과 누룩이 지방세포형성억제 활성, 항염증 활성 그리고 항성장 활성 등 다양한 생리활성을 가지고 있음을 시사한다. This study examined extracts from five different kinds of lees and nuruk and their organic solvent fractions in terms of several biological functions, such as anti-adipogenic, anti-inflammatory, and anti-proliferative activities. The anti-adipogenic activity was investigated by treating mouse pre-adipocyte 3T3-L1 cells with one extract (YE) and four organic solvent fractions (YAc, PAc, RAc, and WPAc) during adipogenesis. Among the treated samples, the ethyl acetate fraction of W-Ju lees (WPAc) showed the strongest anti-adipogenic effect, which was confirmed with oil red O staining and down-regulation of pro-adipogenic genes such as PPAR-gamma and SCD-1. Treatment with WPAc also reduced the expression of PPAR-gamma in a time-dependent manner. The effects of five different extracts were examined on nitric oxide (NO) production in mouse RAW 264.7 cells to determine anti-inflammatory activity. The ethyl acetate fraction of B-Ju lees (PAc) significantly decreased NO production in LPS-stimulated RAW 264.7 cells and it also inhibited NO production in a dose-dependent manner. The PAc fraction also dramatically decreased the viability of human colorectal cancer HCT116 cells in a dose-dependent manner. In addition, PAc increased the expression of NAG-1 and ATF3 genes in a dose dependent manner. Overall, these results indicate that lees and nuruk have several biological functions, including anti-adipogenic, anti-inflammatory, and anti-proliferative activities.

지방세포 특이적 전사인자 조절을 통한 울금 추출물의 항비만 활성

이성애,주형진,박민준,박부덕,김교남 한국피부과학연구원 2017 아시안뷰티화장품학술지 Vol.15 No.2

Purpose: Curcuma longa L. (CL) has been widely used as a medicinal herb and spice. Although several biological effects, such as anti-oxidant and anti-inflammatory effects, of CL have been reported, its anti-adipogenic effects as a nutri-cosmetic material are relatively unclear. This study aimed to evaluate the anti-oxidant and anti-adipogenic effects of CL extracts (CLE) in 3T3-L1 adipocytes. Methods: The 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging activity of CLE was tested. Cell viability was evaluated by a thiazolyl blue tetrazolium bromide (MTT) assay. The anti-adipogenic effects of CLE were estimated using Oil Red O (ORO) staining in 3T3-L1 adipocytes. In addition, number and size of lipid droplets were determined by photomicrograph analysis. The mRNA expression levels of adipogenic transcriptional factors in CLE-treated 3T3-L1 adipocytes were analyzed by reverse transcription-polymerase chain reaction (RT-PCR). Results: Up to 10 mg/mL concentration of CLE effectively scavenged DPPH radicals. Treatment with up to 800 μg/mL concentration of CLE for 24 h did not affect 3T3-L1 adipocytes viability. Thus, we chose up to 800 μg/mL CLE for further experiments. Treatment with CLE significantly inhibited lipid accumulation, and decreased number and size of lipid droplets in 3T3-L1 adipocytes. In addition, down-regulated CCAAT/enhancer binding protein β (CEBPB), peroxisome proliferator activated receptor γ (PPARG), CCAAT/enhancer binding protein α (CEBPA), fatty acid synthase (FASN), and lipoprotein lipase (LPL) expression levels were observed in CLE treated 3T3-L1 cell. Conclusion: Our results suggest that CLE could be used as a potential nutri-cosmetic material that exhibits anti-oxidant and anti-adipogenic effects. 목적: 울금(Curcuma longa L.)은 항산화, 항암, 그리고 항염 등 다양한 생리활성이 보고되어 있지만, 미용관련 기능성 평가는 상대적으로 미비한 실정으로, 본 연구에서는 국내 진도산 울금 추출물(Curcuma longa L. extracts, CLE)의 항산화 및 3T3-L1에서의항비만 활성 평가를 통해 미용기능식품 소재로서의 가능성에 대해 알아보고자 하였다. 방법: CLE의 항산화 활성은 2,2-diphenyl- 1-picrylhydrazyl (DPPH) 라디칼 소거능을 통하여 평가하였으며, 세포독성은 thiazolyl blue tetrazolium bromide (MTT) assay를 이용하였다. 또한 CLE의 지방 축적 억제활성은 3T3-L1를 day –2에서 day 6까지 총 8일 동안 분화시키면서 CLE를 처리하고 Oil Red O (ORO) 염색법을 통해 정량분석 하였다. 또한 현미경 관찰 및 이미지 분석을 통해 지방구의 수 및 크기의 변화를 정성분석 하였다. CLE가 3T3-L1 세포의 지방세포분화에 관여하는 전사인자들의 mRNA 발현수준은 reverse transcription-polymerase chain reaction (RT-PCR)을 통해 분석하였다. 결과: CLE는 농도 의존적으로 DPPH 라디칼을 소거하였다. 3T3-L1 전지방세포에 CLE 를 24 h 동안 처리하였을 때, 800 μg/mL 이하의 농도에서 세포생존율에 영향을 미치지 않았으며, 이후 실험에서 800 μg/mL 이하의 농도로 실험을 진행하였다. CLE가 처리된 3T3-L1 세포의 지방 축적 함량은 농도 의존적으로 감소되었으며, 지방구의 크기 및 수도 감소되었다. 또한 adipogenesis에 관여하는 주요 전사인자 및 유전자가 CLE에 의해 농도 의존적으로 발현이 감소하였다. 결론: 본 연구는CLE가 항산화 및 항비만 활성을 가진 화장품 및 미용식품 소재로 충분히 활용될 수 있을 것이라 제안한다.

In vitro anti-obesity effects of sesamol mediated by adenosine monophosphate-activated protein kinase and mitogenactivated protein kinase signaling in 3T3-L1 cells

고건,성정석,지승철,김민,장원희,강규영,김대영,이시형,신한승 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.1

Sesamol is a phenol derivative of sesame oil and a potent anti-oxidant, anti-inflammatory, anti-hepatotoxic, and anti-aging compound. We investigated the effects of sesamol on the molecular mechanisms of adipogenesis in 3T3-L1 preadipocytes. The intracellular lipid accumulation accompanied by increased extracellular release of free glycerol was decreased during differentiation on treating 3T3- L1 with sesamol. Sesamol treatment on 3T3-L1 inhibited adipogenic differentiation by down-regulating adipogenesis-related factors (C/EBPα, PPARγ, and SREBP-1). Lipid accumulation was repressed by decreasing fatty acid synthase and by up-regulating lipolysis-response genes (HSL and LPL). The molecular mechanisms of sesamol-induced inhibition in adipogenesis were mediated by increased levels of phosphorylated adenosine monophosphate-activated protein kinase and its substrate acetyl- CoA carboxylase. Sesamol treatment, in turn, modulated the different members of the mitogenactivated protein kinase family by suppressing phosphorylation of ERK 1/2 and JNK and by increasing the phosphorylation of p38. In summary, sesamol inhibits adipogenic differentiation by reducing phosphorylation levels of ERK 1/2 and JNK while inducing lipolysis by activating p38 and AMPK. Our results demonstrate that the molecular mechanisms of in vitro anti-obesity effects of sesamol are due to the combined effects of preventing both lipid accumulation and adipogenesis.

Acer okamotoanum Nakai Leaf Extract Inhibits Adipogenesis Via Suppressing Expression of PPAR γ and C/EBP α in 3T3-L1 Cells

( Eun-joo Kim ),( Min-jae Kang ),( Yong Bae Seo ),( Soo-wan Nam ),( Gun-do Kim ) 한국미생물생명공학회(구 한국산업미생물학회) 2018 Journal of microbiology and biotechnology Vol.28 No.10

The genus Acer contains several species with various bioactivities including antioxidant, antitumor and anti-inflammatory properties. However, Acer okamotoanum Nakai, one species within this genus has not been fully studied yet. Therefore, in this study, we investigated the anti-adipogenic activities of leaf extract from A. okamotoanum Nakai (LEAO) on 3T3-L1 preadipocytes. Adipogenesis is one of the cell differentiation processes, which converts preadipocytes into mature adipocytes. Nowadays, inhibition of adipogenesis is considered as an effective strategy in the field of anti-obesity research. In this study, we observed that LEAO decreased the accumulation of lipid droplets during adipogenesis and down-regulated the expression of key adipogenic transcription factors such as peroxisome proliferator-activated receptor γ (PPAR γ) and CCAAT/enhancer binding protein α (C/EBP α). In addition, LEAO inactivated PI3K/Akt signaling and its downstream factors that promote adipogenesis by inducing the expression of PPAR γ. LEAO also activated β-catenin signaling, which prevents the adipogenic program by suppressing the expression of PPAR γ. Therefore, we found that treatment with LEAO is effective for attenuating adipogenesis in 3T3-L1 cells. Consequently, these findings suggest that LEAO has the potential to be used as a therapeutic agent for preventing obesity.

감귤피 효소적 추출물의 지방세포에서의 항비만 효과

장예빈(Yebin Jang),강희주(Heejoo Kang),김주상(Jusang Kim),이승홍(Seung-Hong Lee) 한국식품과학회 2021 한국식품과학회지 Vol.53 No.2

본 연구는 감귤 가공공정 중에 발생하는 가공부산물인 감귤피의 산업적 이용성 및 유용성을 증대시키고자 효소적 추출법을 적용하여 추출물을 제조하고 항비만 활성을 측정하였다. 감귤피 효소적 추출물(MPCE)의 폴리페놀 함량은 이전의 연구에서 보고한 유기용매 추출물보다 높은 함량을 나타내었다. MPCE의 항비만활성을 알아보기 위해 지방세포 분화억제에 미치는 영향을 확인한 결과 MPCE는 농도 의존적으로 지방세포의 분화 및 지방축적을 감소시켰으며 이는 세포독성에 의한 것이 아님을 세포생존율 측정을 통해 확인하였다. 또한 MPCE는 adipogenesis 관련 전사인자인 C/EBPα, SREBP-1, PPARγ, FABP4의 단백질 발현을 감소시켰다. 이러한 결과들을 통해 MPCE는 adipogenesis 관련 전사인자의 단백질 발현 억제하여 지방세포의 분화 및 지방축적을 억제하였으며, 이를 통해 항비만 효과를 나타낸다는 것을 확인하였다. 따라서 MPCE는 비만 예방 효능을 가진 기능성 식품 소재로서의 활용 가치가 있는 것으로 판단되며, 보다 명확한 항비만효능을 확인하기 위해 추후 동물 실험 등에 대한 연구가 필요할 것으로 생각된다. Mandarin peel (MP) is a by-product of the processing of citrus juice or other products. This study aimed to investigate the potential anti-obesity effect of an enzymatic extract of MP on the inhibition of adipogenesis in 3T3-L1 adipocytes. The enzymatic extract (MPCE) was prepared using the commercial food-grade carbohydrase Celluclast. Lipid accumulation and triglyceride levels were significantly lower in MPCE-treated cells than in untreated cells. In addition, MPCE treatment reduced the protein expression levels of peroxisome proliferator-activated receptor-γ, CCAAT/enhancer-binding protein α, sterol regulatory element-binding protein 1, and fatty acid-binding protein 4. These results suggest that MPCE inhibits adipogenesis by downregulating the expression levels of adipogenesis-related proteins. Therefore, the current findings demonstrate that MPCE possesses potent anti-obesity properties and could be a potential ingredient in functional food industries.

Antioxidant and Anti-Obesity Effects of Juglans mandshurica in 3T3-L1 Cells and High-Fat Diet Obese Rats

( Da-hye Choi ),( Min Hong ),( Tae-hyung Kwon ),( Soo-ung Lee ) 한국미생물생명공학회 2024 Journal of microbiology and biotechnology Vol.34 No.3

Juglans mandshurica Maxim. walnut (JMW) is well-known for the treatment of dermatosis, cancer, gastritis, diarrhea, and leukorrhea in Korea. However, the molecular mechanism underlying its anti-obesity activity remains unknown. In the current study, we aimed to determine whether JMW can influence adipogenesis in 3T3-L1 preadipocytes and high-fat diet rats and determine the antioxidant activity. The 20% ethanol extract of JMW (JMWE) had a total polyphenol content of 133.33 ± 2.60 mg GAE/g. Considering the antioxidant capacity, the ABTS and DPPH values of 200 μg/ml of JMWE were 95.69 ± 0.94 and 79.38 ± 1.55%, respectively. To assess the anti-obesity activity of JMWE, we analyzed the cell viability, fat accumulation, and adipogenesis-related factors, including CCAAT-enhancer-binding protein alpha (C/EBPα), sterol regulatory element-binding protein-1c (SREBP1c), peroxisome proliferator-activated receptor-gamma (PPARγ), fatty acid synthase (FAS), and acetyl-CoA carboxylase (ACC). We found that total lipid accumulation and triglyceride levels were reduced, and the fat accumulation rate decreased in a dose-dependent manner. Furthermore, JMWE suppressed adipogenesis-related factors C/EBPα, PPARγ, and SREBP1c, as well as FAS and ACC, both related to lipogenesis. Moreover, animal experiments revealed that JMWE could be employed to prevent and treat obesity-related diseases. Hence, JMWE could be developed as a healthy functional food and further explored as an anti-obesity drug.

어혈처방 3종이 지방전구세포 분화에 미치는 영향

이호영 ( Hoyoung Lee ),심은형 ( Eun Hyoung Shim ),이명수 ( Myeong Soo Lee ),이주아 ( Ju Ah Lee ) 대한본초학회 2016 大韓本草學會誌 Vol.31 No.6

Objectives : Blood stasis (BS) is related to be caused by blood circulation and stagnation which are cancer, atherosclerosis and hyperlipidemia in traditional medicine. We extracted 3 kinds of BS formula; Seogakjihwang-tang (SGT), Tonggyuhawlhyul-tang (THT), Hyulbuchukeo-tang (HCT). This study was conducted to investigate whether the 3 kinds of herbal formula extracts have inhibitory efficacy association with anti-adipogenesis. Methods : To investigate the anti-adipogenesis, we used the mouse fibroblast cell line, 3T3-L1 which differentiated into adipocytes in response to insulin, IBMX and dexamethasone (MDI). Cytotoxicity of herbal formula extracts were examined by CCK-8 kit. Intracellular lipid droplets were detected by Oil-Red-O staining. Triglyceride (TG) and leptin were measure using elisa kit. Results : The yield of water extracts was 14.62% (SGT), 21.27% (THT), 20.02% (HCT). Lipid accumulation was reduced significantly by 3 kinds of herbal formula compared to control. Especially, THT and HCT decreased lipid droplet, respectively at all concentration. The TG and leptin were also inhibited by 3 kinds of herbal formula. The IC50 of TG were 280.51 ㎍/㎖ (SGT), 52.62 ㎍/㎖ (THT), 313.99 ㎍/㎖ (HCT). The IC50 of leptin were 348.76 ㎍/㎖ (SGT), 164.02 ㎍/㎖ (THT), 257.00 ㎍/㎖ (HCT). THT was better than other herbal formula on anti-adipogenesis. Conclusion : kinds of herbal formula inhibited adipogenesis in MDI-induced 3T3-L1 adipocytes, as indicated by the significant reduction in TG and leptin concentration without cytotoxicity. Therefore, 3 kinds of herbal formula for BS might act as a therapeutic agent for preventing lipid diseases, such as obesity and atherosclerosis.

Anti-obesity effect of <i>Solidago virgaurea</i> var. <i>g</i> <i>igantea</i> extract through regulation of adipogenesis and lipogenesis pathways in high-fat diet-induced obese mice (C57BL/6N)

Wang, Zhiqiang,Kim, Ju Hee,Jang, Young Soo,Kim, Chea Ha,Lee, Jae-Yong,Lim, Soon Sung TaylorFrancis 2017 Food & nutrition research Vol.61 No.-

<P><B>ABSTRACT</B></P><P><B>Background:</B> Obesity is associated with an increase in adipogenesis and is becoming a serious health problem in modern society.</P><P><B>Objective:</B> The effects of various Solidago virgaurea var. gigantean (SV) ethanolic aqueous extracts on anti-adipogenesis in 3T3-L1 cells were investigated. In addition, the effect of SV 10% ethanolic extract (SV10E) on preventing obesity was studied in high-fat diet-induced obese mice (C57BL/6 N).</P><P><B>Design:</B> The effect of SV10E on preventing obesity was studied in mice (n = 6): normal-fat diet, high-fat diet (HFD), HFD supplemented with 1% (10 g/kg) Garcinia cambogia extract of 60% (–)-hydroxycitric acid (positive control), HFD supplemented with 0.5% (5 g/kg) SV10E, and HFD supplemented with 2% (20 g/kg) SV10E.</P><P><B>Results:</B> SV10E showed the highest anti-adipogenic activity in vitro and reduced body weight gain, adipose tissue size, and liver weight, without affecting food intake in vivo. SV10E administration decreased the levels of total triacylglycerol and cholesterol in serum, and lipid metabolites in liver. Adipogenic and lipogenic genes such as PPAR-γ, C/EBP-α, aP2, FAS, SCD-1, SREBP-1c, and CD36 in white adipose tissue and liver were suppressed by SV10E administration.</P><P><B>Conclusion:</B> SV10E can be a potent functional food ingredient for preventing HFD-induced obesity by suppressing adipogenesis and lipogenesis.</P>