ArticleAsian Pacific journal of cancer prevention : APJCP2022
PLAGL1 Gene Demethylation Induced by Epigallocatechin Gallate Promotes Pheochromocytoma Cell Apoptosis Via Wnt/β-catenin Signaling Pathway.
Article in Asian Pacific journal of cancer prevention : APJCP, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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6 authors at 2 institutions in 1 country.
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Abstract
objectiveThe aim of this study was to investigate the expression and the promoter methylation level of PLAGL1 gene and the mechanism of epigallocatechin gallate (EGCG) that induces PLAGL1 gene demethylation and promotes the apoptosis of pheochromocytoma (PCC) in PC12 cell line.
methodsThe PC12 cells were treated with 25, 50, 75, 100, and 150 μg/mL EGCG for 48 hours. MSP was used to examine PLAGL1 gene methylation and an MTT assay was performed to detect the cell proliferation. The cell apoptosis was detected using flow cytometry. The mRNA and protein expressions of DNMT1, PLAGL1, Wnt, and β-catenin were detected using RT-quantitative PCR and Western blot.
resultsEGCG dose-dependently reduced the cell viability and reversed PLAGL1 gene hypermethylation in PC12 cells (P<0.05). The cell apoptosis was significantly increased in PC12 cells treated with EGCG. The EGCG treatment restored the expressions of PLAGL1 and downregulated the expression of DNMT1, Wnt, and β-catenin in PC12 cells (P<0.05).
conclusionThe EGCG induces the demethylation process of PLAGL1 gene through down-regulating DNMT1 and restores the PLAGL1 mRNA and protein expression. The Wnt/β-catenin signaling pathway is involved in the regulation of PCC cell apoptosis promoted by EGCG inducing PLAGL1 gene demethylation.
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