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KMID : 0613820220320110855
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Journal of Life Science
2022 Volume.32 No. 11 p.855 ~ p.864
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Novel Role of Dipterocarpus tuberculatus Roxb. as a Lipogenesis Inhibitor and Lipolysis Stimulator in 3T3-L1 Adipocytes
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Lee Su-Jin
Kim Ji-Eun
Choi Yun-Ju
Jin You-Jeong
Roh Yu-Jeong
Seol A-Yun
Song Hee-Jin
Hwang Dae-Youn
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Abstract
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The pharmacological efficacy of Dipterocarpus tuberculatus Roxb. has been verified in only several fields including photoaging, inflammation, hepatotoxicity, acute gastritis and osseointegration. To identify the novel functions of Dipterocarpus tuberculatus Roxb. on anti-obesity, inhibitory effect on lipid accumulation and stimulatory effect on lipolysis were investigated in MDI (3-isobutyl-1-methyl- xanthine, dexamethasone, and insulin) stimulated 3T3-L1 adipocytes treated with methanol extracts of Dipterocarpus tuberculatus Roxb. (MED). Lipogenic targets, including lipid accumulation, level of lipogenic transcription factors, and expression of lipogenic regulators, were downregulated in MDI-stimulated 3T3-L1 adipocytes treated with MED without any significant cytotoxicity. Also, MED treatment inhibited the mRNA levels of adipogenic targets including peroxisome proliferator?activated receptor (PPAR)γ and CCAAT-enhancer binding protein (C/EBP) α, as well as lipogeic targets including adipocyte fatty acid binding protein 2 (aP2) and fatty acid synthetase (FAS) in MDI-stimulated 3T3-L1 adipocytes. A similar decrease patterns were detected in Oil red O stained lipid droplets of
MED treated MDI-stimulated 3T3-L1 adipocytes. Furthermore, several lipolytic targets, such as cAMP concentration, concentration of free glycerol, expression level of lipases, including ATGL, perilipin and HSL, were upregulated in MDI-stimulated 3T3-L1 adipocytes treated with MED. These results show that MED has a novel role as a lipogenesis inhibitor and lipolysis stimulator in MDI-stimulated 3T3-L1 adipocytes.
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KEYWORD
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Dipterocarpus tuberculatus Roxb., lipid accumulation, lipogenesis, lipolysis, obesity
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