PMID- 33577050 OWN - NLM STAT- MEDLINE DCOM- 20210630 LR - 20210630 IS - 2284-0729 (Electronic) IS - 1128-3602 (Linking) VI - 25 IP - 2 DP - 2021 Jan TI - Dexmedetomidine represses proliferation and promotes apoptosis of esophageal cancer cells by regulating C-Myc gene expression via the ERK signaling pathway. PG - 950-956 LID - 24664 [pii] LID - 10.26355/eurrev_202101_24664 [doi] AB - OBJECTIVE: The aim of this study was to investigate the effects of dexmedetomidine (DEX) on proliferation and apoptosis of esophageal cancer (EC) cells, and to explore the possible underlying mechanism. MATERIALS AND METHODS: EC cells (Eca109) were randomly divided into two groups, namely, Control group and DEX group. The viability, proliferation, and apoptosis of Eca109 cells were detected using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, 5-Ethynyl-2'-deoxyuridine (EdU) staining and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) staining, respectively. Meanwhile, the messenger ribonucleic acid (mRNA) and protein expression levels of extracellular signal-regulated kinase (ERK) 1/2 and c-Myc in Eca109 cells were measured by quantitative Reverse Transcription-Polymerase Chain Reaction (qRT-PCR) and Western blotting, respectively. RESULTS: The viability of Eca109 cells was remarkably weakened in DEX group when compared with Control group (p<0.05). DEX could significantly inhibit the proliferation and promote the apoptosis of Eca109 cells (p<0.05). Moreover, the mRNA and protein levels of ERK1/2 and c-Myc in Eca109 cells declined notably (p<0.05). CONCLUSIONS: DEX represses the proliferation and facilitates the apoptosis of Eca109 cells prominently. The possible underlying mechanism may be associated with the inhibition of c-Myc gene expression through the ERK signaling pathway. FAU - Hu, Y AU - Hu Y AD - Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China. 158026072@qq.com. FAU - Qiu, L-L AU - Qiu LL FAU - Zhao, Z-F AU - Zhao ZF FAU - Long, Y-X AU - Long YX FAU - Yang, T AU - Yang T LA - eng PT - Journal Article PL - Italy TA - Eur Rev Med Pharmacol Sci JT - European review for medical and pharmacological sciences JID - 9717360 RN - 0 (Antineoplastic Agents) RN - 0 (Proto-Oncogene Proteins c-myc) RN - 67VB76HONO (Dexmedetomidine) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) SB - IM MH - Antineoplastic Agents/*pharmacology MH - Apoptosis/*drug effects MH - Cell Proliferation/drug effects MH - Dexmedetomidine/*pharmacology MH - Dose-Response Relationship, Drug MH - Drug Screening Assays, Antitumor MH - Esophageal Neoplasms/*drug therapy/metabolism/pathology MH - Extracellular Signal-Regulated MAP Kinases/*metabolism MH - Humans MH - Proto-Oncogene Proteins c-myc/genetics/*metabolism MH - Signal Transduction/drug effects MH - Tumor Cells, Cultured EDAT- 2021/02/13 06:00 MHDA- 2021/07/01 06:00 CRDT- 2021/02/12 12:13 PHST- 2021/02/12 12:13 [entrez] PHST- 2021/02/13 06:00 [pubmed] PHST- 2021/07/01 06:00 [medline] AID - 24664 [pii] AID - 10.26355/eurrev_202101_24664 [doi] PST - ppublish SO - Eur Rev Med Pharmacol Sci. 2021 Jan;25(2):950-956. doi: 10.26355/eurrev_202101_24664.