Fang XG, Zhao K, Zhu R, Fu XF, Wang H. Impact of combined proglumide and celecoxib on cell proliferation and PGE2 secretion in human gastric cancer cell line BGC-823.
Shijie Huaren Xiaohua Zazhi 2015;
23:719-727. [DOI:
10.11569/wcjd.v23.i5.719]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of proglumide (a gastrin receptor antagonist) and celecoxib [a selective cyclooxygenase-2 (COX-2) inhibitor] on cell proliferation and COX-2, 15-hydroxyprostaglandin dehydrogenase (15-PGDH) and prostaglandin E2 (PGE2) expression in human gastric cancer cell line BGC-823.
METHODS: BGC-823 cells were treated with proglumide and celecoxib, alone or in combination. MTT assay was used to detect the proliferation of BGC-823 cells. Real-time PCR was used to detect COX-2 and 15-PGDH mRNA expression. Western blot was used to detect COX-2 and 15-PGDH protein expression, and ELISA was used to determine the content of PGE2 in culture medium.
RESULTS: Proglumide and celecoxib inhibited the growth of BGC-823 cells in a dose- and time-dependent manner. Treatment with combined proglumide (6 mmol/L, less than IC50) and celecoxib (50 μmol/L, less than IC50) for 48 h was associated with a significantly higher inhibition rate than either of the agents alone (65.1% ± 7.7% vs 38.1% ± 7.1%, 32.6% ± 3.3%, P < 0.05). Proglumide and celecoxib down-regulated the expression of COX-2 mRNA and protein, and up-regulated the expression of 15-PGDH mRNA and protein in BGC-823 cells, and the effects of combined treatment were more significant than treatment with either of the agents alone (P < 0.05 vs proglumide; P < 0.01 vs celecoxib). Proglumide and celecoxib reduced the secretion of PGE2, and the effects of combined treatment were more significant than either of the agents alone (P < 0.05 vs proglumide; P < 0.01 vs celecoxib).
CONCLUSION: Proglumide and celecoxib inhibit the growth of cultured BGC-823 cells time- and dose-dependently, possibly by down-regulating the expression of COX-2 mRNA and protein, up-regulating the expression of 15-PGDH mRNA and protein, and reducing PGE2 synthesis or secretion. Combined use of proglumide and celecoxib has a synergistic effect.
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