title: 1-(3',5'-dihydroxyphenoxy)-7-(2'',4'',6-trihydroxyphenoxy)-2,4,9-trihydroxydibenzo-1,4-dioxin inhibits adipocyte differentiation of 3T3-L1 fibroblasts.
abstract: In this study, we isolated the phloroglucinol derivative, 1-(3',5'-dihydroxyphenoxy)-7-(2'',4'',6-trihydroxyphenoxy)-2,4,9-trihydroxydibenzo-1,4-dioxin (1), from Ecklonia cava and evaluated its potential inhibition on adipocyte differentiation in 3T3-L1 cells. Lipid accumulation along with the expression of several genes associated with adipogenesis and lipolysis was examined at the end of differentiation. Lipid accumulation level was examined by measuring triglyceride content and Oil-Red O staining. The expression levels of several genes and proteins were examined using reverse-transcription polymerase chain reaction (RT-PCR), real-time RT-PCR, and Western blot analysis. Compound 1 significantly reduced lipid accumulation and downregulated peroxisome proliferator-activated receptor-gamma, sterol regulatory element-binding protein 1c, and CCAAT/enhancer-binding proteins alpha in a dose-dependent manner. Moreover, the presence of compound 1 induced downregulation of adipogenic target genes such as fatty acid binding protein 4, fatty acid transport protein 1, fatty acid synthase, acyl-CoA synthetase 1, lipoprotein lipase, and leptin. According to the lipolytic response, compound 1 downregulated perilipin and hormone-sensitive lipase while upregulating tumor necrosis factor alpha. Therefore, these results suggest that compound 1 might decrease lipid accumulation during adipocyte differentiation by modulating adipogenesis and lipogenesis. Furthermore, compound 1 could be developed as a functional agent effective in improving obesity.
authors.affiliation: Marine Bioprocess Research Center, Pukyong National University, Busan, 608-737, South Korea.
authors.forename: Chang-Suk
authors.initials: CS
authors.lastname: Kong
authors.forename: Jung-Ae
authors.initials: JA
authors.lastname: Kim
authors.forename: Byul-Nim
authors.initials: BN
authors.lastname: Ahn
authors.forename: Thanh Sang
authors.initials: TS
authors.lastname: Vo
authors.forename: Na-Young
authors.initials: NY
authors.lastname: Yoon
authors.forename: Se-Kwon
authors.initials: SK
authors.lastname: Kim
mesh_terms: D041721:3T3-L1 Cells; D017667:Adipocytes / Q000166:cytology* / Q000187:drug effects*; D000818:Animals; D002454:Cell Differentiation; D004146:Dioxanes / Q000737:chemistry / Q000494:pharmacology*; D004147:Dioxins / Q000737:chemistry / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D005347:Fibroblasts / Q000166:cytology* / Q000187:drug effects*; D005786:Gene Expression Regulation / Q000187:drug effects; D051379:Mice; D015394:Molecular Structure; D000459:Phaeophyceae / Q000737:chemistry; D010696:Phloroglucinol / Q000031:analogs & derivatives* / Q000737:chemistry / Q000494:pharmacology
chemical_list: C552188:1-(3',5'-dihydroxyphenoxy)-7-(2',4',6-trihydroxyphenoxy)-2,4,9-trihydroxydibenzo-1,4-dioxin; D004146:Dioxanes; D004147:Dioxins; D010696:Phloroglucinol
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