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eISSN: 1643-3750

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[Retracted]  Effects of 3-Tetrazolyl Methyl-3-Hydroxy-Oxindole Hybrid (THOH) on Cell Proliferation, Apoptosis, and G2/M Cell Cycle Arrest Occurs by Targeting Platelet-Derived Growth Factor D (PDGF-D) and the MEK/ERK Signaling Pathway in Human Lung Cell Lines SK-LU-1, A549, and A-427

Peng Li, Zhiqiang Zhang, Feng Zhang, Hongling Zhou, Bei Sun

(Department of Internal Medicine, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, Henan, China (mainland))

Med Sci Monit 2018; 24: LBR4547-4554

DOI: 10.12659/MSM.909125


BACKGROUND: The aim of this study was to evaluate the effects of 3-tetrazolyl methyl-3-hydroxy-oxindole hybrid (THOH) on cell proliferation, apoptosis, and the cell cycle in human lung cancer cell lines SK-LU-1, A549, and A-427, and the normal lung fibroblast cell line, MRC-5, in vitro.
MATERIAL AND METHODS: Human lung adenocarcinoma cells SK-LU-1, A549, and A-427, and the normal lung fibroblast cells, MRC-5 were cultured and treated with increasing concentrations of 10 mM of a stock solution of THOH in dimethyl sulfoxide (DMSO). An MTT cell proliferation assay was used. Cell apoptosis and the cell cycle were studied using fluorescence-activated cell sorting (FACs) with fluorescein isothiocyanate (FITC), Annexin-V, propidium iodide (PI), and nuclear staining with 4’,6-diamidino-2-phenylindole (DAPI). DNA damage was measured using the comet (single-cell gel electrophoresis) assay. Cell migration was evaluated using a wound healing assay, and Western blotting was used to measure protein expression levels.
RESULTS: Treatment of SK-LU-1 cells with THOH inhibited cell migration. Treatment of lung cancer cells, SK-LU-1, A549, and A-427, with THOH inhibited cell proliferation, with the most marked inhibition found in the SK-LU-1 lung cancer cells (IC50, 12 µM). Treatment of lung cancer cells, SK-LU-1, A549, and A-427, with THOH increased cell apoptosis, resulted in G2/M cell cycle arrest, and inhibited both the platelet-derived growth factor D (PDGF-D) and MEK/ERK signaling pathways.
CONCLUSIONS: Treatment of adenocarcinoma cells, SK-LU-1, A549, and A-427, with THOH inhibited cell proliferation, apoptosis, and resulted in G2/M cell cycle arrest by targeting PDGF-D and the MEK/ERK signaling pathway.

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