Article ; Online: Prostaglandin E2 increases migration and proliferation of human glioblastoma cells by activating transient receptor potential melastatin 7 channels.
Journal of cellular and molecular medicine
2018 Volume 22, Issue 12, Page(s) 6327–6337
Abstract: ... enhances migration and proliferation of human glioblastoma cells by up-regulation of the TRPM7 channel. ... 7 (TRPM7) play important roles in migration and proliferation of human glioblastoma cells ... Recent studies showed that both prostaglandin E2 (PGE2) and transient receptor potential melastatin ...
| Abstract | Recent studies showed that both prostaglandin E2 (PGE2) and transient receptor potential melastatin 7 (TRPM7) play important roles in migration and proliferation of human glioblastoma cells. In this study, we tested the association between PGE2 and TRPM7. We found that PGE2 increased TRPM7 currents in HEK293 and human glioblastoma A172 cells. The PGE2 EP3 receptor antagonist L-798106 abrogated the PGE2 stimulatory effect, while EP3 agonist 17-phenyl trinor prostaglandin E2 (17-pt-PGE2) mimicked the effect of PEG2 on TRPM7. The TRPM7 phosphotransferase activity-deficient mutation, K1646R had no effect on PGE2 induced increase of TRPM7 currents. Inhibition of protein kinase A (PKA) activity by Rp-cAMP increased TRPM7 currents. TRPM7 PKA phosphorylation site mutation S1269A abolished the PGE2 effect on TRPM7 currents. PGE2 increased both mRNA and membrane protein expression of TRPM7 in A172 cells. Knockdown of TRPM7 by shRNA abrogated the PGE2 stimulated migration and proliferation of A172 cells. Blockage of TRPM7 with 2-aminoethoxydiphenyl borate (2-APB) or NS8593 had a similar effect as TRPM7-shRNA. In conclusion, our results demonstrate that PGE2 activates TRPM7 via EP3/PKA signalling pathway, and that PGE2 enhances migration and proliferation of human glioblastoma cells by up-regulation of the TRPM7 channel. |
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| MeSH term(s) | Cell Line, Tumor ; Cell Movement/genetics ; Cell Proliferation/genetics ; Cyclic AMP-Dependent Protein Kinases/genetics ; Dinoprostone/genetics ; Gene Expression Regulation, Neoplastic ; Glioblastoma/genetics ; Glioblastoma/pathology ; HEK293 Cells ; Humans ; Mutation/genetics ; Phosphorylation/genetics ; Protein-Serine-Threonine Kinases/genetics ; RNA, Messenger/genetics ; RNA, Small Interfering/genetics ; Receptors, Prostaglandin E, EP3 Subtype/agonists ; Receptors, Prostaglandin E, EP3 Subtype/genetics ; Signal Transduction/genetics ; TRPM Cation Channels/genetics | |||||
| Chemical Substances | PTGER3 protein, human ; RNA, Messenger ; RNA, Small Interfering ; Receptors, Prostaglandin E, EP3 Subtype ; TRPM Cation Channels ; Protein-Serine-Threonine Kinases (EC 2.7.11.1) ; TRPM7 protein, human (EC 2.7.11.1) ; Cyclic AMP-Dependent Protein Kinases (EC 2.7.11.11) ; Dinoprostone (K7Q1JQR04M) | |||||
| Language | English | |||||
| Publishing date | 2018-10-19 | |||||
| Publishing country | England | |||||
| Document type | Journal Article ; Research Support, Non-U.S. Gov't | |||||
| ZDB-ID | 2074559-X | |||||
| ISSN | 1582-4934 ; 1582-4934 ; 1582-1838 | |||||
| ISSN (online) | 1582-4934 | |||||
| ISSN | 1582-4934 ; 1582-1838 | |||||
| DOI | 10.1111/jcmm.13931 | |||||
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| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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