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Seo SG, Ahn YJ, Jin MH, Kang NG, Cho HS. Curcuma longa enhances IFN-γ secretion by natural killer cells through cytokines secreted from macrophages. J Food Sci 2021; 86:3492-3504. [PMID: 34250593 DOI: 10.1111/1750-3841.15821] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 05/07/2021] [Accepted: 05/28/2021] [Indexed: 12/01/2022]
Abstract
Interferon-γ (IFN-γ) regulates the human immune system. To study the interaction between macrophages and natural killer (NK) cells, we established a THP-1 macrophage-conditioned media. Among the 58 natural plant extracts tested, Curcuma longa exerted the strongest IFN-γ-enhancing effect in NK-92 cells through THP-1 macrophages. C. longa extract (CLE) enhanced IFN-γ secretion 2.3- and 4.2-fold at 50 and 100 µg/ml, respectively. Therefore, we evaluated its IFN-γ-enhancing effect in vitro. Although NK-92 cells did not produce IFN-γ following treatment with C. longa, enhanced IFN-γ secretion was observed after treatment with THP-1 macrophage-conditioned media. We hypothesized that the cytokines secreted by the CLE-treated THP-1 macrophages are responsible for stimulating NK-92 cells. Cytokine array results show upregulation of cytokines, including MIP-1α, CXCL-1, IL-1β, PAI-1, and TNF-α, in CLE-treated THP-1 macrophages. To determine the cytokines responsible for augmenting IFN-γ secretion, NK-92 cells were stimulated with MIP-1α, CXCL-1, IL-1β, or PAI-1. Enzyme-linked immunosorbent assay results show that all cytokines induced IFN-γ production, although the dose response was somewhat varied. High-performance liquid chromatography analysis of CLE revealed the concentrations of three active curcuminoids, curcumin, demethoxycurcumin, and bisdemethoxycurcumin, as 6.70%, 1.00%, and 0.95%, respectively. Their mixture (with concentrations comparable to their occurrence in CLE) exerted an effect similar to that of the whole CLE. Our findings reveal that CLE indirectly stimulated NK-92 cells to secrete IFN-γ, which is mediated by cytokines produced from THP-1 macrophages. Further, we identified three curcuminoids partly responsible for this IFN-γ-enhancing effect. Therefore, C. longa can be used as a functional food ingredient owing to its immune-boosting ability. PRACTICAL APPLICATION: This study demonstrates that CLE stimulates THP-1 macrophages to secrete cytokines, which can in turn stimulate IFN-γ production by NK-92 cells. A mixture of three curcuminoids present in the extract exerted effects similar to whole CLE, demonstrating that the curcuminoids are partly responsible for the IFN-γ-enhancing effect of C. longa. Since IFN-γ is a key regulator of human immune system, these results suggest the potential use of C. longa as an immune-boosting functional food ingredient.
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Affiliation(s)
- Sang Gwon Seo
- Science Research Park, LG Household and Healthcare Ltd., Gangseo-gu, Seoul, South Korea
| | - Young Je Ahn
- Science Research Park, LG Household and Healthcare Ltd., Gangseo-gu, Seoul, South Korea
| | - Mu Hyun Jin
- Science Research Park, LG Household and Healthcare Ltd., Gangseo-gu, Seoul, South Korea
| | - Nae Gyu Kang
- Science Research Park, LG Household and Healthcare Ltd., Gangseo-gu, Seoul, South Korea
| | - Ho Song Cho
- Science Research Park, LG Household and Healthcare Ltd., Gangseo-gu, Seoul, South Korea
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2
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Yang H, Seo SG, Shin SH, Min S, Kang MJ, Yoo R, Kwon JY, Yue S, Kim KH, Cheng JX, Kim JR, Park JS, Kim JH, Park JHY, Lee HJ, Lee KW. 3,3’-Diindolylmethane suppresses high-fat diet-induced obesity through inhibiting adipogenesis of pre-adipocytes by targeting USP2 activity. Mol Nutr Food Res 2017; 61. [DOI: 10.1002/mnfr.201700119] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Revised: 05/06/2017] [Accepted: 05/26/2017] [Indexed: 01/11/2023]
Affiliation(s)
- Hee Yang
- Department of Agricultural Biotechnology; Seoul National University; Seoul Republic of Korea
| | - Sang Gwon Seo
- Department of Agricultural Biotechnology; Seoul National University; Seoul Republic of Korea
| | - Seung Ho Shin
- Department of Agricultural Biotechnology; Seoul National University; Seoul Republic of Korea
| | - Soyun Min
- Department of Agricultural Biotechnology; Seoul National University; Seoul Republic of Korea
| | - Min Jeong Kang
- Department of Agricultural Biotechnology; Seoul National University; Seoul Republic of Korea
| | - Ra Yoo
- Department of Agricultural Biotechnology; Seoul National University; Seoul Republic of Korea
| | - Jeong Yeon Kwon
- Department of Food Science; Purdue University; West Lafayette IN USA
| | - Shuhua Yue
- Weldon School of Biomedical Engineering; Purdue University; West Lafayette IN USA
| | - Kee Hong Kim
- Department of Food Science; Purdue University; West Lafayette IN USA
| | - Ji-Xin Cheng
- Weldon School of Biomedical Engineering; Purdue University; West Lafayette IN USA
- Department of Chemistry; Purdue University; West Lafayette IN USA
| | - Jong Rhan Kim
- R&D Evaluation Center; Korea Institute of Science and Technology Evaluation and Planning; Seoul Republic of Korea
| | - Joon-Suk Park
- Laboratory Animal Center; Daegu-GyeongBuk Medical Innovation Foundation; Daegu Republic of Korea
| | - Jong Hun Kim
- Research Institute of Agriculture and Life Sciences; Seoul National University; Seoul Republic of Korea
| | - Jung Han Yoon Park
- Research Institute of Agriculture and Life Sciences; Seoul National University; Seoul Republic of Korea
| | - Hyong Joo Lee
- Department of Agricultural Biotechnology; Seoul National University; Seoul Republic of Korea
| | - Ki Won Lee
- Department of Agricultural Biotechnology; Seoul National University; Seoul Republic of Korea
- Research Institute of Agriculture and Life Sciences; Seoul National University; Seoul Republic of Korea
- Advanced Institutes of Convergence Technology; Seoul National University; Suwon Republic of Korea
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3
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Cheong LY, Suk S, Thimmegowda NR, Chung MY, Yang H, Seo SG, Shwetha B, Kim JE, Kwon JY, Kim BY, Lee KW. Hirsutenone Directly Targets PI3K and ERK to Inhibit Adipogenesis in 3T3-L1 Preadipocytes. J Cell Biochem 2016; 116:1361-70. [PMID: 25756947 DOI: 10.1002/jcb.25093] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 01/23/2015] [Indexed: 02/05/2023]
Abstract
Adipogenesis is a key driver of the expansion of adipose tissue mass that causes obesity. Hirsutenone (HST) is an active botanical diarylheptanoid present in Alnus species. In this study, we evaluated the effects of HST on adipogenesis, its mechanisms of action and the molecular targets involved. Using Oil Red O staining, we observed that HST dose-dependently suppresses lipid accumulation during adipogenesis in 3T3-L1 preadipocytes, concomitant with a decrease in peroxisome proliferator-activated receptor-γ (PPARγ), CCAAT/enhancer-binding protein α (C/EBPα) and fatty acid synthase (FAS) protein expression. This inhibitory effect was largely limited to the early stage of adipogenesis, which includes mitotic clonal expansion (MCE), as evidenced by delayed cell cycle entry of preadipocytes from G1 to S phase. Furthermore, the regulation of MCE was accompanied by suppression of phosphatidylinositol 3-kinase (PI3K) and extracellular-regulated kinase (ERK) activity. HST was also shown to bind directly to PI3K and ERK1 in a non-ATP competitive manner. Our results suggest that HST attenuates adipogenesis by directly targeting PI3K and ERK during MCE in 3T3-L1 preadipocytes, underscoring the potential therapeutic application of HST in preventing obesity.
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Affiliation(s)
- Lai Yee Cheong
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Sujin Suk
- Interdisciplinary Program in Agricultural Biotechnology Major, College of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
| | - N R Thimmegowda
- Chemical Biology Research Center and World Class Institute, Korea Research Institute of Bioscience and Biotechnology, Ochang, Republic of Korea
| | - Min-Yu Chung
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea.,Division of Metabolism and Functionality Research, Korea Food Research Institute, Seongnam, Republic of Korea
| | - Hee Yang
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - Sang Gwon Seo
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea
| | - B Shwetha
- Chemical Biology Research Center and World Class Institute, Korea Research Institute of Bioscience and Biotechnology, Ochang, Republic of Korea
| | - Jong-Eun Kim
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea.,Research Institute of Bio Food Industry, Institute of Green Bio Science and Technology, Seoul National University, Pyeongchang, Republic of Korea
| | - Jung Yeon Kwon
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
| | - Bo Yeon Kim
- Chemical Biology Research Center and World Class Institute, Korea Research Institute of Bioscience and Biotechnology, Ochang, Republic of Korea
| | - Ki Won Lee
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University, Seoul, Republic of Korea.,Interdisciplinary Program in Agricultural Biotechnology Major, College of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea.,Research Institute of Bio Food Industry, Institute of Green Bio Science and Technology, Seoul National University, Pyeongchang, Republic of Korea.,Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
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Chae SY, Seo SG, Yang H, Yu JG, Suk SJ, Jung ES, Ji H, Kwon JY, Lee HJ, Lee KW. Anti-adipogenic effect of erucin in early stage of adipogenesis by regulating Ras activity in 3T3-L1 preadipocytes. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.09.060] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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Suk S, Seo SG, Yu JG, Yang H, Jeong E, Jang YJ, Yaghmoor SS, Ahmed Y, Yousef JM, Abualnaja KO, Al-Malki AL, Kumosani TA, Lee CY, Lee HJ, Lee KW. A Bioactive Constituent of Ginger, 6-Shogaol, Prevents Adipogenesis and Stimulates Lipolysis in 3T3-L1 Adipocytes. J Food Biochem 2015. [DOI: 10.1111/jfbc.12191] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Sujin Suk
- WCU Biomodulation Major; Department of Agricultural Biotechnology; Center for Food and Bioconvergence; Seoul National University; Seoul 151-921 Korea
- Interdisciplinary Program in Agricultural Biotechnology Major; College of Agriculture and Life Sciences; Seoul National University; Seoul Korea
| | - Sang Gwon Seo
- WCU Biomodulation Major; Department of Agricultural Biotechnology; Center for Food and Bioconvergence; Seoul National University; Seoul 151-921 Korea
- Advanced Institutes of Convergence Technology; Seoul National University; Suwon 443-270 Korea
| | - Jae Gak Yu
- WCU Biomodulation Major; Department of Agricultural Biotechnology; Center for Food and Bioconvergence; Seoul National University; Seoul 151-921 Korea
| | - Hee Yang
- WCU Biomodulation Major; Department of Agricultural Biotechnology; Center for Food and Bioconvergence; Seoul National University; Seoul 151-921 Korea
| | - Eunsun Jeong
- WCU Biomodulation Major; Department of Agricultural Biotechnology; Center for Food and Bioconvergence; Seoul National University; Seoul 151-921 Korea
| | - Young Jin Jang
- WCU Biomodulation Major; Department of Agricultural Biotechnology; Center for Food and Bioconvergence; Seoul National University; Seoul 151-921 Korea
| | - Soonham Sami Yaghmoor
- Experimental Biochemistry Unit; King Fahd Medical Research Center and Production of Bioproducts for Industrial Applications Research Group; King Abdulaziz University; Jeddah Saudi Arabia
| | - Youssri Ahmed
- Biochemistry Department; Faculty of Science and Production of Bioproducts for Industrial Applications Research Group; King Abdulaziz University; Jeddah Saudi Arabia
| | - Jehad Mustafa Yousef
- Biochemistry Department; Faculty of Science for Girl's; Experimental Biochemistry Unit; King Fahd Medical Research Center and Production of Bioproducts for Industrial Applications Research Group; King Abdulaziz University; Jeddah Saudi Arabia
| | - Khalid Omer Abualnaja
- Biochemistry Department; Faculty of Science and Bioactive Natural Products Research Group; King Abdulaziz University; Jeddah Saudi Arabia
| | - Abdulrahman Labeed Al-Malki
- Biochemistry Department; Faculty of Science; Experimental Biochemistry Unit; King Fahd Medical Research Center and Bioactive Natural Products Research Group; King Abdulaziz University; Jeddah Saudi Arabia
| | - Taha Abdullah Kumosani
- Biochemistry Department; Faculty of Science; Experimental Biochemistry Unit; King Fahd Medical Research Center and Production of Bioproducts for Industrial Applications Research Group; King Abdulaziz University; Jeddah Saudi Arabia
| | - Chang Y. Lee
- Department of Food Science; Cornell University; Ithaca NY 14850
- Production of Bio-products for Industrial Applications Research Group; King Abdulaziz University; Jeddah 22254 Saudi Arabia
| | - Hyong Joo Lee
- WCU Biomodulation Major; Department of Agricultural Biotechnology; Center for Food and Bioconvergence; Seoul National University; Seoul 151-921 Korea
- Advanced Institutes of Convergence Technology; Seoul National University; Suwon 443-270 Korea
- Research Institute of Bio Food Industry; Institute of Green Bio Science and Technology; Seoul National University; Pyeongchang 232-916 Korea
| | - Ki Won Lee
- WCU Biomodulation Major; Department of Agricultural Biotechnology; Center for Food and Bioconvergence; Seoul National University; Seoul 151-921 Korea
- Interdisciplinary Program in Agricultural Biotechnology Major; College of Agriculture and Life Sciences; Seoul National University; Seoul Korea
- Advanced Institutes of Convergence Technology; Seoul National University; Suwon 443-270 Korea
- Research Institute of Bio Food Industry; Institute of Green Bio Science and Technology; Seoul National University; Pyeongchang 232-916 Korea
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Lee S, Kim JE, Suk S, Kwon OW, Park G, Lim TG, Seo SG, Kim JR, Kim DE, Lee M, Chung DK, Jeon JE, Cho DW, Hurh BS, Kim SY, Lee KW. A fermented barley and soybean formula enhances skin hydration. J Clin Biochem Nutr 2015; 57:156-63. [PMID: 26388675 PMCID: PMC4566027 DOI: 10.3164/jcbn.15-43] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Accepted: 05/01/2015] [Indexed: 01/25/2023] Open
Abstract
Skin hydration is one of the primary aims of beauty and anti-aging treatments. Barley (Hordeum vulgare) and soybean (Glycine max) are major food crops, but can also be used as ingredients for the maintenance of skin health. We developed a natural product-based skin treatment using a barley and soybean formula (BS) incorporating yeast fermentation, and evaluated its skin hydration effects as a dietary supplement in a clinical study. Participants ingested a placebo- (n = 33) or BS- (3 g/day) containing drink (n = 32) for 8 weeks. A significant increase in hydration in the BS group as compared to the placebo group was observed on the faces of subjects after 4 and 8 weeks, and on the forearm after 4 weeks. Decreases in stratum corneum (SC) thickness were also observed on the face and forearm. BS enhanced hyaluronan (HA) and skin barrier function in vitro and reduced Hyal2 expression in human dermal fibroblasts (HDF). BS also recovered ultraviolet (UV) B-induced downregulation of HA in HaCaT cells. These results suggest that BS has promising potential for development as a health functional food to enhance skin health.
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Affiliation(s)
- Sein Lee
- WCU Biomodulation Major, Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Korea ; Advanced Institutes of Convergence Technology, Seoul National University, Seoul 151-921, Korea
| | - Jong-Eun Kim
- WCU Biomodulation Major, Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Korea ; Advanced Institutes of Convergence Technology, Seoul National University, Seoul 151-921, Korea
| | - Sujin Suk
- Interdisciplinary Program in Agricultural Biotechnology Major, Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Korea
| | - Oh Wook Kwon
- Graduate School of East-West Medical Science, Kyung Hee University, Global Campus, #1732 Deogyeong-daero, Giheung-gu, Yongin, Gyeonggi-do, 446-701, Korea
| | - Gaeun Park
- WCU Biomodulation Major, Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Korea ; Advanced Institutes of Convergence Technology, Seoul National University, Seoul 151-921, Korea
| | - Tae-Gyu Lim
- WCU Biomodulation Major, Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Korea ; Advanced Institutes of Convergence Technology, Seoul National University, Seoul 151-921, Korea
| | - Sang Gwon Seo
- WCU Biomodulation Major, Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Korea ; Advanced Institutes of Convergence Technology, Seoul National University, Seoul 151-921, Korea
| | - Jong Rhan Kim
- WCU Biomodulation Major, Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Korea ; Advanced Institutes of Convergence Technology, Seoul National University, Seoul 151-921, Korea
| | - Dae Eung Kim
- Sempio Fermentation Research Center; #183 Osongsaengmyeong 4-ro, Osongeup, Cheongwongun, Chungcheongbukdo, 363-954, Korea
| | - Miyeong Lee
- Skin Biotechnology Center, Gyeonggi Biocenter, Suwon, Korea
| | - Dae Kyun Chung
- Skin Biotechnology Center, Gyeonggi Biocenter, Suwon, Korea ; Graduate School of Biotechnology and Institute of Life Science and Resources, Kyung Hee University, Yongin 446-701, Korea
| | - Jong Eun Jeon
- Sempio Fermentation Research Center; #183 Osongsaengmyeong 4-ro, Osongeup, Cheongwongun, Chungcheongbukdo, 363-954, Korea
| | - Dong Woon Cho
- Sempio Fermentation Research Center; #183 Osongsaengmyeong 4-ro, Osongeup, Cheongwongun, Chungcheongbukdo, 363-954, Korea
| | - Byung Serk Hurh
- Sempio Fermentation Research Center; #183 Osongsaengmyeong 4-ro, Osongeup, Cheongwongun, Chungcheongbukdo, 363-954, Korea
| | - Sun Yeou Kim
- College of Pharmacy, Gachon University, #191 Hambakmoero, Yeonsu-gu, Incheon 406-799, Korea
| | - Ki Won Lee
- WCU Biomodulation Major, Department of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Korea ; Advanced Institutes of Convergence Technology, Seoul National University, Seoul 151-921, Korea ; Institute on Aging, Seoul National University, Seoul 151-921, Korea
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7
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Huh WB, Kim JE, Kang YG, Park G, Lim TG, Kwon JY, Song DS, Jeong EH, Lee CC, Son JE, Seo SG, Lee E, Kim JR, Lee CY, Park JS, Lee KW. Brown Pine Leaf Extract and Its Active Component Trans-Communic Acid Inhibit UVB-Induced MMP-1 Expression by Targeting PI3K. PLoS One 2015; 10:e0128365. [PMID: 26066652 PMCID: PMC4465834 DOI: 10.1371/journal.pone.0128365] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Accepted: 04/25/2015] [Indexed: 11/22/2022] Open
Abstract
Japanese red pine (Pinus densiflora) is widely present in China, Japan, and Korea. Its green pine leaves have traditionally been used as a food as well as a coloring agent. After being shed, pine leaves change their color from green to brown within two years, and although the brown pine leaves are abundantly available, their value has not been closely assessed. In this study, we investigated the potential anti-photoaging properties of brown pine leaves for skin. Brown pine leaf extract (BPLE) inhibited UVB-induced matrix metalloproteinase-1 (MMP-1) expression to a greater extent than pine leaf extract (PLE) in human keratinocytes and a human skin equivalent model. HPLC analysis revealed that the quantity of trans-communic acid (TCA) and dehydroabietic acid (DAA) significantly increases when the pine leaf color changes from green to brown. BPLE and TCA elicited reductions in UVB-induced MMP-1 mRNA expression and activator protein-1 (AP-1) transactivation by reducing DNA binding activity of phospho-c-Jun, c-fos and Fra-1. BPLE and TCA also inhibited UVB-induced Akt phosphorylation, but not mitogen activated protein kinase (MAPK), known regulators of AP-1 transactivation. We additionally found that BPLE and TCA inhibited phosphoinositide 3-kinase (PI3K), the upstream kinase of Akt, in vitro. In summary, both BPLE and its active component TCA exhibit protective effects against UVB-induced skin aging. Taken together, these findings underline the potential for BPLE and TCA to be utilized as anti-wrinkling agents and cosmetic ingredients, as they suppress UVB-induced MMP-1 expression.
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Affiliation(s)
- Won Bum Huh
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
| | - Jong-Eun Kim
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
| | - Young-Gyu Kang
- Skin Research Institute, Amorepacific Corporation R&D Center, Yongin, Republic of Korea
| | - Gaeun Park
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
| | - Tae-gyu Lim
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
| | - Jung Yeon Kwon
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
| | - Da Som Song
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
| | - Eun Hee Jeong
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
| | - Charles C. Lee
- Department of Food Science and Technology, Cornell University, Ithaca, New York, 14456, United States of America
| | - Joe Eun Son
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
| | - Sang Gwon Seo
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
| | - Eunjung Lee
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
- Traditional Alcoholic Beverage Research Team, Korea Food Research Institute, Seongnam, Republic of Korea
| | - Jong Rhan Kim
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
| | - Chang Yong Lee
- Department of Food Science and Technology, Cornell University, Ithaca, New York, 14456, United States of America
- Department of Biochemistry, King Abdulaziz University, Jeddah, Saudia Arabia
| | - Jun Seong Park
- Skin Research Institute, Amorepacific Corporation R&D Center, Yongin, Republic of Korea
- * E-mail: (KWL); (JSP)
| | - Ki Won Lee
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
- Advanced Institutes of Convergence Technology, Seoul National University, Suwon, Republic of Korea
- * E-mail: (KWL); (JSP)
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Lee JH, Kim JE, Jang YJ, Lee CC, Lim TG, Jung SK, Lee E, Lim SS, Heo YS, Seo SG, Son JE, Kim JR, Lee CY, Lee HJ, Lee KW. Dehydroglyasperin C suppresses TPA-induced cell transformation through direct inhibition of MKK4 and PI3K. Mol Carcinog 2015; 55:552-62. [DOI: 10.1002/mc.22302] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2014] [Revised: 12/26/2014] [Accepted: 01/21/2015] [Indexed: 01/08/2023]
Affiliation(s)
- Ji Hoon Lee
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence; Seoul National University; Seoul Republic of Korea
- Advanced Institutes of Convergence Technology; Seoul National University; Suwon Republic of Korea
| | - Jong-Eun Kim
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence; Seoul National University; Seoul Republic of Korea
- Advanced Institutes of Convergence Technology; Seoul National University; Suwon Republic of Korea
- Research Institute of Bio Food Industry, Institute of Green Bio Science and Technology; Seoul National University; Pyeongchang Republic of Korea
| | - Young Jin Jang
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence; Seoul National University; Seoul Republic of Korea
- Division of Creative Food Science for Health; Korea Food Research Institute; Seongnam Republic of Korea
| | - Charles C. Lee
- Department of Food Science and Technology; Cornell University; Ithaca NY 14456 USA
| | - Tae-Gyu Lim
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence; Seoul National University; Seoul Republic of Korea
- Advanced Institutes of Convergence Technology; Seoul National University; Suwon Republic of Korea
| | - Sung Keun Jung
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence; Seoul National University; Seoul Republic of Korea
- Division of Creative Food Science for Health; Korea Food Research Institute; Seongnam Republic of Korea
| | - Eunjung Lee
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence; Seoul National University; Seoul Republic of Korea
- Traditional Alcoholic Beverage Research Team; Korea Food Research Institute; Seongnam Republic of Korea
| | - Soon Sung Lim
- Department of Food Science and Nutrition; Hallym University; Chuncheon Republic of Korea
| | - Yong Seok Heo
- Department of Chemistry; Konkuk University; Seoul Republic of Korea
| | - Sang Gwon Seo
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence; Seoul National University; Seoul Republic of Korea
- Advanced Institutes of Convergence Technology; Seoul National University; Suwon Republic of Korea
| | - Joe Eun Son
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence; Seoul National University; Seoul Republic of Korea
- Advanced Institutes of Convergence Technology; Seoul National University; Suwon Republic of Korea
| | - Jong Rhan Kim
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence; Seoul National University; Seoul Republic of Korea
- Advanced Institutes of Convergence Technology; Seoul National University; Suwon Republic of Korea
| | - Chang Yong Lee
- Department of Food Science and Technology; Cornell University; Ithaca NY 14456 USA
- Department of Biochemistry; King Abdulaziz University; Jeddah SA
| | - Hyong Joo Lee
- Research Institute of Bio Food Industry, Institute of Green Bio Science and Technology; Seoul National University; Pyeongchang Republic of Korea
| | - Ki Won Lee
- WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence; Seoul National University; Seoul Republic of Korea
- Advanced Institutes of Convergence Technology; Seoul National University; Suwon Republic of Korea
- Research Institute of Bio Food Industry, Institute of Green Bio Science and Technology; Seoul National University; Pyeongchang Republic of Korea
- Institute on Aging; Seoul National University; Seoul Republic of Korea
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Song NR, Kim JE, Park JS, Kim JR, Kang H, Lee E, Kang YG, Son JE, Seo SG, Heo YS, Lee KW. Licochalcone A, a polyphenol present in licorice, suppresses UV-induced COX-2 expression by targeting PI3K, MEK1, and B-Raf. Int J Mol Sci 2015; 16:4453-70. [PMID: 25710724 PMCID: PMC4394430 DOI: 10.3390/ijms16034453] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 01/21/2015] [Accepted: 02/03/2015] [Indexed: 12/02/2022] Open
Abstract
Licorice is a traditional botanical medicine, and has historically been commonly prescribed in Asia to treat various diseases. Glycyrrhizin (Gc), a triterpene compound, is the most abundant phytochemical constituent of licorice. However, high intake or long-term consumption of Gc has been associated with a number of side effects, including hypertension. However, the presence of alternative bioactive compounds in licorice with anti-carcinogenic effects has long been suspected. Licochalcone A (LicoA) is a prominent member of the chalcone family and can be isolated from licorice root. To date, there have been no reported studies on the suppressive effect of LicoA against solar ultraviolet (sUV)-induced cyclooxygenase (COX)-2 expression and the potential molecular mechanisms involved. Here, we show that LicoA, a major chalcone compound of licorice, effectively inhibits sUV-induced COX-2 expression and prostaglandin E2 PGE2 generation through the inhibition of activator protein 1 AP-1 transcriptional activity, with an effect that is notably more potent than Gc. Western blotting analysis shows that LicoA suppresses sUV-induced phosphorylation of Akt/ mammalian target of rapamycin (mTOR) and extracellular signal-regulated kinases (ERK)1/2/p90 ribosomal protein S6 kinase (RSK) in HaCaT cells. Moreover, LicoA directly suppresses the activity of phosphoinositide 3-kinase (PI3K), mitogen-activated protein kinase kinase (MEK)1, and B-Raf, but not Raf-1 in cell-free assays, indicating that PI3K, MEK1, and B-Raf are direct molecular targets of LicoA. We also found that LicoA binds to PI3K and B-Raf in an ATP-competitive manner, although LicoA does not appear to compete with ATP for binding with MEK1. Collectively, these results provide insight into the biological action of LicoA, which may have potential for development as a skin cancer chemopreventive agent.
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Affiliation(s)
- Nu Ry Song
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-742, Korea.
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 443-270, Korea.
| | - Jong-Eun Kim
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-742, Korea.
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 443-270, Korea.
| | - Jun Seong Park
- Skin Research Institute, Amorepacific R&D Center, Yongin, 446-829, Korea.
| | - Jong Rhan Kim
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-742, Korea.
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 443-270, Korea.
| | - Heerim Kang
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-742, Korea.
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 443-270, Korea.
| | - Eunjung Lee
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-742, Korea.
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 443-270, Korea.
- Traditional Alcoholic Beverage Research Team, Korea Food Research Institute, Seongnam 463-746, Korea.
| | - Young-Gyu Kang
- Skin Research Institute, Amorepacific R&D Center, Yongin, 446-829, Korea.
| | - Joe Eun Son
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-742, Korea.
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 443-270, Korea.
| | - Sang Gwon Seo
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-742, Korea.
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 443-270, Korea.
| | - Yong Seok Heo
- Department of Chemistry, Konkuk University, Seoul, 143-701, Korea.
| | - Ki Won Lee
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, 151-742, Korea.
- Advanced Institute of Convergence Technology, Seoul National University, Suwon, 443-270, Korea.
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Lee S, Kim J, Seo SG, Choi BR, Han JS, Lee KW, Kim J. Sulforaphane alleviates scopolamine-induced memory impairment in mice. Pharmacol Res 2014; 85:23-32. [DOI: 10.1016/j.phrs.2014.05.003] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Revised: 04/29/2014] [Accepted: 05/05/2014] [Indexed: 10/25/2022]
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Shin SH, Seo SG, Min S, Yang H, Lee E, Son JE, Kwon JY, Yue S, Chung MY, Kim KH, Cheng JX, Lee HJ, Lee KW. Caffeic acid phenethyl ester, a major component of propolis, suppresses high fat diet-induced obesity through inhibiting adipogenesis at the mitotic clonal expansion stage. J Agric Food Chem 2014; 62:4306-4312. [PMID: 24611533 DOI: 10.1021/jf405088f] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
In the present study, we aimed to investigate the antiobesity effect of CAPE in vivo, and the mechanism by which CAPE regulates body weight in vitro. To confirm the antiobesity effect of CAPE in vivo, mice were fed with a high fat diet (HFD) with different concentrations of CAPE for 5 weeks. CAPE significantly reduced body weight gain and epididymal fat mass in obese mice fed a HFD. In accordance with in vivo results, Oil red O staining results showed that CAPE significantly suppressed MDI-induced adipogenesis of 3T3-L1 preadipocytes. FACS analysis results showed that CAPE delayed MDI-stimulated cell cycle progression, thereby contributing to inhibit mitotic clonal expansion (MCE), which is a prerequisite step for adipogenesis. Also, CAPE regulated the expression of cyclin D1 and the phosphorylation of ERK and Akt, which are upstream of cyclin D1. These results suggest that CAPE exerts an antiobesity effect in vivo, presumably through inhibiting adipogenesis at an early stage of adipogenesis.
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Affiliation(s)
- Seung Ho Shin
- Department of Agricultural Biotechnology and Center for Agricultural Biomaterials, ‡WCU Biomodulation Major, Department of Agricultural Biotechnology and Center for Food and Bioconvergence, Seoul National University , Seoul 151-921, Republic of Korea
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Kim YJ, Seo SG, Choi K, Kim JE, Kang H, Chung MY, Lee KW, Lee HJ. Recovery effect of onion peel extract against H2 O2 -induced inhibition of gap-junctional intercellular communication is mediated through quercetin. J Food Sci 2014; 79:H1011-7. [PMID: 24697689 DOI: 10.1111/1750-3841.12440] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 02/21/2014] [Indexed: 11/29/2022]
Abstract
UNLABELLED Cellular oxidative damage mediated by reactive oxygen species has been reported to inhibit gap-junctional intercellular communication (GJIC). In turn, the inhibition of GJIC can be attenuated by functional food compounds with antioxidant properties. In this study, we compared the protective effects of onion peel extract (OPE) and onion flesh extract (OFE) on oxidative stress-mediated GJIC inhibition, and investigated the mechanisms of action responsible. OPE restored H2 O2 -induced GJIC inhibition to a higher degree than OFE in WB-F344 rat liver epithelial cells. OPE was found to inhibit H2 O2 -induced phosphorylation of ERK1/2 and Cx43. A radical scavenging assay demonstrated superiority of OPE over OFE, suggesting that the observed effects might be mediated via an antioxidant mechanism. Quercetin is the major compound that is likely to be responsible for the protective effect against H2 O2 -mediated GJIC inhibition. This study suggests that OPE, a material often discarded, may be of value for the future development of functional food products. PRACTICAL APPLICATION This study demonstrates that onion peel extract (OPE) exhibits a protective effect against the inhibition of gap-junctional intercellular communication (GJIC) mediated by H2 O2 , which is likely to occur via its antioxidant activity. OPE contains significant concentrations of bioactive phenolic compounds. Reductions in oxidative stress can lead to recovery of GJIC, which has been reported to be implicated in the prevention and treatment of cancers. These findings suggest that onion peel, a common waste product, could be used as potential resources for functional food development. Onion peel could be processed into a quercetin-rich powder or a pill for the prevention of cancer and other oxidative stress-related diseases.
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Affiliation(s)
- Young-Jun Kim
- Dept. of Agricultural Biotechnology, Seoul Natl. Univ, Seoul 151-921, Republic of Korea; Food Safety Center, Ottogi Corp, Gyeonggi-Do 431-070, Republic of Korea
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Song NR, Chung MY, Kang NJ, Seo SG, Jang TS, Lee HJ, Lee KW. Quercetin suppresses invasion and migration of H-Ras-transformed MCF10A human epithelial cells by inhibiting phosphatidylinositol 3-kinase. Food Chem 2014; 142:66-71. [DOI: 10.1016/j.foodchem.2013.07.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 05/19/2013] [Accepted: 07/01/2013] [Indexed: 12/21/2022]
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Son JE, Hwang MK, Lee E, Seo SG, Kim JE, Jung SK, Kim JR, Ahn GH, Lee KW, Lee HJ. Persimmon peel extract attenuates PDGF-BB-induced human aortic smooth muscle cell migration and invasion through inhibition of c-Src activity. Food Chem 2013; 141:3309-16. [DOI: 10.1016/j.foodchem.2013.06.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 05/01/2013] [Accepted: 06/11/2013] [Indexed: 01/14/2023]
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Son JE, Lee E, Seo SG, Lee J, Kim JE, Kim J, Lee KW, Lee HJ. Eupatilin, a major flavonoid of Artemisia, attenuates aortic smooth muscle cell proliferation and migration by inhibiting PI3K, MKK3/6, and MKK4 activities. Planta Med 2013; 79:1009-1016. [PMID: 23877919 DOI: 10.1055/s-0033-1350621] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Eupatilin, a major flavonoid of plants in the genus Artemisia, has been shown to exhibit anti-inflammatory, anti-oxidative, and anti-tumor effects. However, the potential anti-atherogenic effects of eupatilin and any underlying mechanisms have not been investigated. In the present study, we sought to determine the effects of eupatilin on phenotypes induced by the growth factor PDGF-BB in human aortic smooth muscle cells. Here we show that aortic sprouting as well as PDGF-BB-induced proliferation and migration of human aortic smooth muscle cells were significantly inhibited by eupatilin. We found that eupatilin inhibited PI3K activity, causing a direct effect on phosphorylation of the downstream kinases Akt and p70S6K. In parallel, eupatilin also inhibited the phosphorylation of MKK3/6-p38 MAPK and the MKK4-JNK pathway. Moreover we found that eupatilin exhibited stronger inhibition effects on PDGF-BB-induced proliferation and migration of human aortic smooth muscle cells than PI3K, p38 MAPK, and JNK pathway inhibitors. Taken together, our results indicate that eupatilin is a potent anti-atherogenic agent that inhibits PDGF-BB-induced proliferation and migration in HASMCs as well as aortic sprouting, which is likely mediated through the attenuation of PI3K, MKK3/6, and MKK4 activation.
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Affiliation(s)
- Joe Eun Son
- WCU Biomodulation Major, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
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Seo SG, Yang H, Shin SH, Min S, Kim YA, Yu JG, Lee DE, Chung MY, Heo YS, Kwon JY, Yue S, Kim KH, Cheng JX, Lee KW, Lee HJ. A metabolite of daidzein, 6,7,4'-trihydroxyisoflavone, suppresses adipogenesis in 3T3-L1 preadipocytes via ATP-competitive inhibition of PI3K. Mol Nutr Food Res 2013; 57:1446-55. [PMID: 23737351 DOI: 10.1002/mnfr.201200593] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Revised: 02/16/2013] [Accepted: 02/19/2013] [Indexed: 01/07/2023]
Abstract
SCOPE Daidzein is one of the major soy isoflavones. Following ingestion, daidzein is readily metabolized in the liver and converted into hydroxylated metabolites. One such metabolite is 6,7,4'-trihydroxyisoflavone (6,7,4'-THIF), which has been the focus of recent studies due to its various health benefits, however, its anti-adipogenic activity has not been investigated. Our objective was to determine the effects of 6,7,4'-THIF on adipogenesis in 3T3-L1 preadipocytes and elucidate the mechanisms of action involved. METHODS AND RESULTS Adipogenesis was stimulated in 3T3-L1 preadipocytes. Both 6,7,4'-THIF and daidzein were treated in the presence and absence of mixture of isobutylmethylxanthine, dexamethasone, and insulin (MDI). We observed that 6,7,4'-THIF, but not daidzein, inhibited MDI-induced adipogenesis significantly at 40 and 80 μM, associated with decreased peroxisome proliferator-activated receptor-γ and C/EBP-α protein expression. 6,7,4'-THIF significantly suppressed MDI-induced lipid accumulation in the early stage of adipogenesis, attributable to a suppression of cell proliferation and the induction of cell cycle arrest. We also determined that 6,7,4'-THIF, but not daidzein, attenuated phosphatidylinositol 3-kinase (PI3K)/Akt signaling pathway. 6,7,4'-THIF was found to inhibit PI3K activity via direct binding in an ATP-competitive manner. CONCLUSION Our results suggest that 6,7,4'-THIF suppresses adipogenesis in 3T3-L1 preadipocytes by directly targeting PI3K. Soy isoflavones like 6,7,4'-THIF may have potential for development into novel treatment strategies for chronic obesity.
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Affiliation(s)
- Sang Gwon Seo
- WCU Biomodulation Major, Center for Food and Bioconvergence, Department of Agricultural Biotechnology, Seoul National University, Seoul, Republic of Korea
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Jung SK, Lim TG, Seo SG, Lee HJ, Hwang YS, Choung MG, Lee KW. Cyanidin-3-O-(2″-xylosyl)-glucoside, an anthocyanin from Siberian ginseng (Acanthopanax senticosus) fruits, inhibits UVB-induced COX-2 expression and AP-1 transactivation. Food Sci Biotechnol 2013. [DOI: 10.1007/s10068-013-0108-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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Chang J, Seo SG, Lee KH, Nagashima K, Bang JK, Kim BY, Erikson RL, Lee KW, Lee HJ, Park JE, Lee KS. Essential role of Cenexin1, but not Odf2, in ciliogenesis. Cell Cycle 2013; 12:655-62. [PMID: 23343771 DOI: 10.4161/cc.23585] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Primary cilia are microtubule-based solitary sensing structures on the cell surface that play crucial roles in cell signaling and development. Abnormal ciliary function leads to various human genetic disorders, collectively known as ciliopathies. Outer dense fiber protein 2 (Odf2) was initially isolated as a major component of sperm-tail fibers. Subsequent studies have demonstrated the existence of many splicing variants of Odf2, including Cenexin1 (Odf2 isoform 9), which bears an unusual C-terminal extension. Strikingly, Odf2 localizes along the axoneme of primary cilia, whereas Cenexin1 localizes to basal bodies in cultured mammalian cells. Whether Odf2 and Cenexin1 contribute to primary cilia assembly by carrying out either concerted or distinct functions is unknown. By taking advantage of odf2-/- cells lacking endogenous Odf2 and Cenexin1, but exogenously expressing one or both of these proteins, we showed that Cenexin1, but not Odf2, was necessary and sufficient to induce ciliogenesis. Furthermore, the Cenexin1-dependent primary cilia assembly pathway appeared to function independently of Odf2. Consistently, Cenexin1, but not Odf2, interacted with GTP-loaded Rab8a, localized to the distal/subdistal appendages of basal bodies, and facilitated the recruitment of Chibby, a centriolar component that is important for proper ciliogenesis. Taken together, our results suggest that Cenexin1 plays a critical role in ciliogenesis through its C-terminal extension that confers a unique ability to mediate primary cilia assembly. The presence of multiple splicing variants hints that the function of Odf2 is diversified in such a way that each variant has a distinct role in the complex cellular and developmental processes.
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Affiliation(s)
- Jaerak Chang
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
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Kwon JY, Seo SG, Yue S, Cheng JX, Lee KW, Kim KH. An inhibitory effect of resveratrol in the mitotic clonal expansion and insulin signaling pathway in the early phase of adipogenesis. Nutr Res 2012; 32:607-16. [DOI: 10.1016/j.nutres.2012.06.014] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 06/23/2012] [Accepted: 06/26/2012] [Indexed: 10/28/2022]
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Kwon JY, Seo SG, Heo YS, Yue S, Cheng JX, Lee KW, Kim KH. Piceatannol, natural polyphenolic stilbene, inhibits adipogenesis via modulation of mitotic clonal expansion and insulin receptor-dependent insulin signaling in early phase of differentiation. J Biol Chem 2012; 287:11566-78. [PMID: 22298784 DOI: 10.1074/jbc.m111.259721] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Piceatannol, a natural stilbene, is an analog and a metabolite of resveratrol. Despite a well documented health benefit of resveratrol in intervention of the development of obesity, the role of piceatannol in the development of adipose tissue and related diseases is unknown. Here, we sought to determine the function of piceatannol in adipogenesis and elucidate the underlying mechanism. We show that piceatannol inhibits adipogenesis of 3T3-L1 preadipocytes in a dose-dependent manner at noncytotoxic concentrations. This anti-adipogenic property of piceatannol was largely limited to the early event of adipogenesis. In the early phase of adipogenesis, piceatannol-treated preadipocytes displayed a delayed cell cycle entry into G(2)/M phase at 24 h after initiation of adipogenesis. Furthermore, the piceatannol-suppressed mitotic clonal expansion was accompanied by reduced activation of the insulin-signaling pathway. Piceatannol dose-dependently inhibited differentiation mixture-induced phosphorylation of insulin receptor (IR)/insulin receptor substrate-1 (IRS-1)/Akt pathway in the early phase of adipogenesis. Moreover, we showed that piceatannol is an inhibitor of IR kinase activity and phosphatidylinositol 3-kinase (PI3K). Our kinetics study of IR further identified a K(m) value for ATP of 57.8 μm and a K(i) value for piceatannol of 28.9 μm. We also showed that piceatannol directly binds to IR and inhibits IR kinase activity in a mixed noncompetitive manner to ATP, through which piceatannol appears to inhibit adipogenesis. Taken together, our study reveals an anti-adipogenic function of piceatannol and highlights IR and its downstream insulin signaling as novel targets for piceatannol in the early phase of adipogenesis.
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Affiliation(s)
- Jung Yeon Kwon
- Department of Food Science, Purdue University, West Lafayette, Indiana 47907, USA
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