PMID- 33075233 OWN - NLM STAT- MEDLINE DCOM- 20210916 LR - 20210916 IS - 1547-6901 (Electronic) IS - 1547-691X (Linking) VI - 17 IP - 1 DP - 2020 Dec TI - Cadmium induces CCL2 production in glioblastoma cells via activation of MAPK, PI3K, and PKC pathways. PG - 186-193 LID - 10.1080/1547691X.2020.1829211 [doi] AB - Cadmium (Cd) is accumulated in human astrocytes and induces the production of interleukin (IL)-6 and IL-8. Astrocytes are one of the major sources of chemokine C-C motif ligand 2 (CCL2; known as monocyte chemoattractant protein-1 [MCP-1]), in the brain. Elevated CCL2 levels are associated with cognitive impairment as well as the migration and invasion of glioblastoma cells. The present study hypothesized that non-toxic concentrations of Cd (as cadmium chloride [CdCl(2)]) could up-regulate CCL2 production in U-87 MG human glio-blastoma cells. The results showed that after exposure of the U-87 MG cells to CdCl(2) at 1 and 10 microM, there was an up-regulation of CCL2 mRNA expression after 3 h of exposure and increased CCL2 secretion after 6 and 24 h. The study also found that inhibition of MAPK pathways, including ERK1/2, p38, and JNK by U0126, SB203580 and SP600125, respectively, reduced Cd-induced CCL2 secretion by the cells. Moreover, when cells were pretreated with Ro 32-0432 (an inhibitor of calcium-dependent PKC) and LY294002 (a PI3K inhibitor), this also resulted in a down-regulation of any Cd-induced CCL2 expression. Taken together, the results of this study allow for the conclusion to be made that CCL2 up-regulation in U-87 MG cells induced by Cd is mediated, in part, by an activation of MAPK, PI3K/Akt, and PKC pathways. FAU - Kasemsuk, Thitima AU - Kasemsuk T AD - Division of Pharmacology, Faculty of Pharmaceutical Sciences, Burapha University, Chonburi, Thailand. FAU - Phuagkhaopong, Suttinee AU - Phuagkhaopong S AD - Pharmacology Graduate Program, Faculty of Science, Mahidol University, Bangkok, Thailand. FAU - Yubolphan, Ruedeemars AU - Yubolphan R AD - Pharmacology Graduate Program, Faculty of Science, Mahidol University, Bangkok, Thailand. FAU - Rungreangplangkool, Norapat AU - Rungreangplangkool N AD - Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand. FAU - Vivithanaporn, Pornpun AU - Vivithanaporn P AD - Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Samut Prakan, Thailand. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Immunotoxicol JT - Journal of immunotoxicology JID - 101201960 RN - 0 (CCL2 protein, human) RN - 0 (Chemokine CCL2) RN - 00BH33GNGH (Cadmium) RN - EC 2.7.11.13 (Protein Kinase C) RN - EC 2.7.11.24 (MAPK3 protein, human) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) SB - IM MH - Brain Neoplasms/*metabolism MH - Cadmium/*metabolism MH - Chemokine CCL2/*metabolism MH - Glioblastoma/*metabolism MH - Humans MH - Mitogen-Activated Protein Kinase 3 MH - Phosphatidylinositol 3-Kinases/*metabolism MH - Protein Kinase C/*metabolism MH - Signal Transduction OTO - NOTNLM OT - Akt OT - CCL2 OT - Cadmium OT - MAPK OT - MCP-1 OT - PI3K OT - PKC OT - glioblastoma EDAT- 2020/10/20 06:00 MHDA- 2021/09/18 06:00 CRDT- 2020/10/19 20:08 PHST- 2020/10/19 20:08 [entrez] PHST- 2020/10/20 06:00 [pubmed] PHST- 2021/09/18 06:00 [medline] AID - 10.1080/1547691X.2020.1829211 [doi] PST - ppublish SO - J Immunotoxicol. 2020 Dec;17(1):186-193. doi: 10.1080/1547691X.2020.1829211.