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Year : 2019  |  Volume : 15  |  Issue : 1  |  Page : 120-125

The administration of peroxisome proliferator-activated receptors α/γ agonist TZD18 inhibits cell growth and induces apoptosis in human gastric cancer cell lines

Department of Basic Medicine Courses, Nanyang Medical College, Nanyang 473003, PR China

Correspondence Address:
Dr. Xichao Xia
Medicine College of Pingdingshan University, Pingdingshan 476000, Henan Province
PR China
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0973-1482.208753

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Aim of Study: This study is to investigate the effects of a novel peroxisome proliferator-activated receptor (PPAR) α/γ dual agonist TZD18 on cell growth, apoptosis, caspase activity, mitochondrial membrane potential, cytochrome c release, and apoptotic-related protein expression in MKN-45 cells. Materials and Methods: 3-(4, 5-dimethylthiazolyl)-2,5-diphenyltetrazolium bromide assay against various human cancer cell lines was performed to investigate the whether TZD18 could in reduce the proliferation rates of cancer cells. The percentages of apoptotic cells and mitochondrial membrane potential level were determined by flow cytometry. The subcellular localization of cytochrome c was examined by immunofluorescence microscopy. Western blotting assay was performed to reveal the expression of apoptosis-related proteins. Results: The results showed that the administration of TZD18 could inhibit the growth of MKN-45 cells in a dose- and time-dependent manner. In addition, the apoptotic ratio increased sharply along with a significant increase of caspase activities, mitochondrial membrane potential, and cytochrome c release following TZD18 exposure. The expression of Bax and p27kip1 increased significantly, whereas the expression level of Bcl-2 protein was downregulated. Conclusion: These results indicated that the administration of PPAR α/γ agonist TZD18 may inhibit cell growth by inducing the apoptotic process in MKN-45 cells.

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