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http://dx.doi.org/10.5352/JLS.2021.31.3.321

Induction of Apoptosis by Treatment of Human Prostate Cancer LNCaP Cells with Methanol Fractions from Prunus mume  

Kim, Hwi-gon (Department of Applied Bioscience, Dong-A University)
Kim, Jeong-Ho (Department of Food Science and Technology, Kyungpook National University)
Heo, Ji-An (Department of Food Biotechnology, Dong-A University)
Won, Yeong-Seon (Department of Food Biotechnology, Dong-A University)
Seo, Kwon-Il (Department of Food Biotechnology, Dong-A University)
Publication Information
Journal of Life Science / v.31, no.3, 2021 , pp. 321-329 More about this Journal
Abstract
This study examined the growth inhibitory effect of the methanol fraction of maesil (Prunus mume) extract (MMF) on LNCaP, PC-3, and RC-58T human prostate cancer cell lines. Among these cell lines, LNCaP was the most sensitive to the inhibitory effects of MMF. Observation of the morphology and apoptotic body formation in the LNCaP cells revealed morphological changes, nuclear damage, and condensation in response to MMF treatment. The suppressive effect of MMF was related to the intrinsic apoptosis pathway, as indicated by increased expression of the pro-apoptotic proteins Bax, capase-3, capase-9, and PARP and decreased expression of the anti-apoptotic protein Bcl-2. Combined treatment with MMF and the AIF inhibitor N-phenylmalemide (N-PM) indicated that MMF treatment alone had a significant growth suppression effect. The involvement of the extrinsic apoptosis pathway was also confirmed by increased expression of AIF and Endo G. The growth suppression effect of MMF was also significant when compared to the effects of a combination of the PI3K inhibitor LY294002 and MMF. The reduced expression of PI3K, p-Akt, and p-mTOR confirmed the involvement of the PI3K/Akt/ mTOR signaling pathway in regulating the anti-proliferative properties of MMF. In conclusion, the growth suppression effect of MMF in the LNCaP human prostate cancer cell line shows the possibility of using this natural product in functional foods.
Keywords
Apoptosis; human prostate cancer; LNCaP cells; maesil; methanol fraction;
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