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- W2029262488 abstract "Protease-activated receptor-2 (PAR-2) has shown strong pro-angiogenesis activity physiologically and pathologically. This study aimed to explore PAR-2 regulation of pro-angiogenesis gene expression and the underlying molecular pathways in gastric cancer cells. MKN28 human gastric cancer cells were treated with trypsin, a PAR-2 activator, and subjected to real-time reverse transcription polymerase chain reaction (qRT-PCR), western blotting and ELISA for gene expression analyses. ERK1/2 phosphorylation and p38 MAP kinase inhibitors (PD98059 and SB203580, respectively) were used to block their gene activities. PAR-2 mRNA and protein were expressed in MKN-28 cells and activated by trypsin treatment. Trypsin-activated PAR-2 protein significantly enhanced expression of vascular endothelial growth factor (VEGF) and cyclooxygenase-2 (COX-2) mRNA and protein in gastric cancer cells in a dose- and time-dependent manner. PAR-2 activation also induced the phosphorylation of ERK1/2 and p38 MAP kinase, but the ERK1/2 and p38 inhibitors blocked the activated PAR-2-induced VEGF and COX-2 expression in gastric cancer cells. PAR-2-induced expression of VEGF and COX-2 mRNA and protein in gastric cancer MKN28 cells was mediated by activation of an ERK1/2- and p38 MAP kinase-dependent pathway. Thus, PAR-2 may serve as a promising target for anti-angiogenesis therapy to treat gastric cancer." @default.
- W2029262488 created "2016-06-24" @default.
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- W2029262488 date "2012-08-30" @default.
- W2029262488 modified "2023-10-17" @default.
- W2029262488 title "Protease-activated receptor-2 induces expression of vascular endothelial growth factor and cyclooxygenase-2 via the mitogen-activated protein kinase pathway in gastric cancer cells" @default.
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- W2029262488 doi "https://doi.org/10.3892/or.2012.1998" @default.
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