PMID- 36359772 OWN - NLM STAT- MEDLINE DCOM- 20221121 LR - 20221211 IS - 2073-4409 (Electronic) IS - 2073-4409 (Linking) VI - 11 IP - 21 DP - 2022 Oct 26 TI - Upregulation of Na(v)1.6 Mediated by the p38 MAPK Pathway in the Dorsal Root Ganglia Contributes to Cancer-Induced Bone Pain in Rats. LID - 10.3390/cells11213375 [doi] LID - 3375 AB - Cancer-induced bone pain (CIBP) occurs frequently among advanced cancer patients. Voltage-gated sodium channels (VGSCs) have been associated with chronic pain, but how VGSCs function in CIBP is poorly understood. Here, we aimed to investigate the specific role of VGSCs in the dorsal root ganglia (DRGs) in CIBP. A CIBP rat model was generated by the intratibial inoculation of MRMT-1 breast carcinoma cells. Transcriptome sequencing was conducted to assess the gene expression profiles. The expression levels of key genes and differentiated genes related to activated pathways were measured by Western blotting and qPCR. We implanted a catheter intrathecally for the administration of lentivirus and drugs. Then, the changes in the mechanical withdrawal threshold (MWT) were measured. We identified 149 differentially expressed mRNAs (DEmRNAs) in the DRGs of CIBP model rats. The expression of Na(v)1.6, which was among these DEmRNAs, was significantly upregulated. The Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis of the DEmRNAs showed that they were mainly enriched in the mitogen-activated protein kinase (MAPK) pathway. The decrease in MWT induced by bone cancer was attenuated by Na(v)1.6 knockdown. Western blot analysis revealed that a p38 inhibitor decreased the expression of Na(v)1.6 and attenuated pain behavior. Our study shows that the upregulation of Na(v)1.6 expression by p38 MAPK in the DRGs of rats contributes to CIBP. FAU - Lin, Mingxue AU - Lin M AD - Department of Anesthesiology, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou 350000, China. FAU - Chen, Xiaohui AU - Chen X AD - Department of Anesthesiology, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou 350000, China. FAU - Wu, Shuyan AU - Wu S AD - Department of Anesthesiology, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou 350000, China. FAU - Chen, Pinzhong AU - Chen P AD - Department of Anesthesiology, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou 350000, China. FAU - Wan, Haiyang AU - Wan H AD - Department of Anesthesiology, First Affiliated Hospital of Yangtze University, First People's Hospital of Jingzhou, Jingzhou 434000, China. FAU - Ma, Simeng AU - Ma S AD - Fujian Provincial Maternity and Children's Hospital, Fuzhou 350000, China. FAU - Lin, Na AU - Lin N AD - Department of Anesthesiology, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou 350000, China. FAU - Liao, Yanling AU - Liao Y AD - Department of Anesthesiology, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou 350000, China. FAU - Zheng, Ting AU - Zheng T AD - Department of Anesthesiology, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou 350000, China. FAU - Jiang, Jundan AU - Jiang J AD - Department of Anesthesiology, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou 350000, China. FAU - Zheng, Xiaochun AU - Zheng X AD - Department of Anesthesiology, Shengli Clinical Medical College of Fujian Medical University, Fujian Provincial Hospital, Fuzhou 350000, China. AD - Fujian Emergency Medical Center, Fujian Provincial Key Laboratory of Critical Care Medicine, Fuzhou 350000, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20221026 PL - Switzerland TA - Cells JT - Cells JID - 101600052 RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - 0 (Voltage-Gated Sodium Channels) RN - 0 (Scn8a protein, rat) RN - 0 (NAV1.6 Voltage-Gated Sodium Channel) SB - IM MH - Animals MH - Rats MH - Bone Neoplasms/complications/metabolism MH - Ganglia, Spinal/metabolism MH - *p38 Mitogen-Activated Protein Kinases/metabolism MH - Pain/genetics/metabolism MH - Rats, Sprague-Dawley MH - Up-Regulation MH - Voltage-Gated Sodium Channels/metabolism MH - *NAV1.6 Voltage-Gated Sodium Channel/genetics/metabolism MH - *Cancer Pain/genetics/metabolism PMC - PMC9654392 OTO - NOTNLM OT - MAPK pathway OT - Nav1.6 OT - RNA-seq OT - cancer-induced bone pain OT - dorsal root ganglion COIS- The authors declare that they have no conflict of interest. EDAT- 2022/11/12 06:00 MHDA- 2022/11/15 06:00 PMCR- 2022/10/26 CRDT- 2022/11/11 01:12 PHST- 2022/08/28 00:00 [received] PHST- 2022/10/19 00:00 [revised] PHST- 2022/10/21 00:00 [accepted] PHST- 2022/11/11 01:12 [entrez] PHST- 2022/11/12 06:00 [pubmed] PHST- 2022/11/15 06:00 [medline] PHST- 2022/10/26 00:00 [pmc-release] AID - cells11213375 [pii] AID - cells-11-03375 [pii] AID - 10.3390/cells11213375 [doi] PST - epublish SO - Cells. 2022 Oct 26;11(21):3375. doi: 10.3390/cells11213375.