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    Article

    Edible Vitalmelon Fruit Extract Promotes Lipolysis of MDI-stimulated 3T3-L1 Adipocytes through the Stimulation of Glycerol Release and β-oxidation

    You Jeong Jin1, Su Jin Lee1, Ji Eun Kim1, Yu Jeong Roh1, Hee Jin Song1, Ayun Seol1, Tae Ryeol Kim1, Kyeong Seon Min1, Eun Seo Park1, Gi Ho Park1, Hye Mi Kang2, Nam Jun Kang3, Ki Won Lee4, Young-Whan Choi2, Dae Youn Hwang1★★ Corresponding author

    1. 1Department of Biomaterials Science (BK21 FOUR Program)/Life and Industry Convergence Research Institute, College of Natural Resources and Life Science, Pusan National University, Miryang-si, Gyeongsangnam-do Province, REPUBLIC OF KOREA.
    2. 2Department of Horticultural Bioscience/Life and Industry Convergence Research Institute, College of Natural Resources and Life Science, Pusan National University, Miryang-si, Gyeongsangnam-do Province, REPUBLIC OF KOREA.
    3. 3Department of Horticulture, Gyeongsang National University, Jinju, South Gyeongsang Province, REPUBLIC OF KOREA.
    4. 4Kwangdong Pharmaceutical Co. Ltd., Seoul, Republic of Korea.

    CORRESPONDENCE

    Dae Youn Hwang

    Department of Biomaterials Science (BK21 FOUR Program)/Life and Industry Convergence Research Institute, College of Natural Resources and Life Science, Pusan National University, Miryang-si, Gyeongsangnam-do Province, REPUBLIC OF KOREA.

    dyhwang@pusan.ac.kr

    Received: 02-08-2023; Accepted: 18-12-2023.

    Volume 21, Issue 1 · pp. 142–151 · PUBLISHED 2025 · DOI: 10.1177/09731296241266394

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    ABSTRACT

    Background and Purpose: The anti-obesity effects of vitalmelon extracts have been well verified in only adipogenesis and lipogenesis of adipocytes and high-fat diet-induced obesity mice except lipolysis. Therefore, we were investigated the novel function of edible vitalmelon fruit water extract (VW) on lipolysis. Materials and Methods: The changes in the free glycerol release, cyclic adenosine monophosphate (cAMP)-dependent signaling pathway, and expression of β-oxidation-related regulators were analyzed in 3‐isobutyl‐1‐methylxanthine, dexamethasone, and insulin (MDI)-stimulated 3T3‐L1 adipocytes (MiSt-3T3 adipocytes) after a VW treatment. Results: The successful differentiation of pre-adipocytes was confirmed with increased oil-red O (ORO)-stained lipid accumulation and PPARγ gene transcription. After maturation of adipocytes, the levels of free glycerol, intracellular cAMP, and hormone-sensitive lipase phosphorylation increased in a dose-dependent manner in the MDI+VW-treated group. In addition, the protein and mRNA levels of three β-oxidation-related genes (ACADs, ACO1, and CTP) were remarkably increased in the MiSt-3T3 adipocytes after VW treatment, while ATPCL phosphorylation was decreased. The changes in the expression levels of these proteins were accompanied by alteration on the expression levels of the PPARα transcription factors. The levels of PPARα protein phosphorylation and mRNA transcription in MiSt-3T3 adipocytes increased dosedependently after the VW treatment. Conclusion: These results show that VW can promote lipolysis by controlling the cAMP-mediated glycerol release pathway and β-oxidation in MiSt-3T3 adipocytes.

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      Jin, Y. J., Lee, S. J., Kim, J. E., Roh, Y. J., Song, H. J., Seol, A., Kim, T. R., Min, K. S., Park, E. S., Park, G. H., Kang, H. M., Kang, N. J., Lee, K. W., Choi, Y., & Hwang, D. Y. (2025). Edible Vitalmelon Fruit Extract Promotes Lipolysis of MDI-stimulated 3T3-L1 Adipocytes through the Stimulation of Glycerol Release and β-oxidation. Pharmacognosy Magazine, 21(1), 142–151. https://doi.org/10.1177/09731296241266394