国际口腔医学杂志2026，Vol.53Issue(4)：526-536,11.DOI:10.7518/gjkq.2026228
5-羟色胺受体2C通过Gαq/11-Yes相关蛋白信号通路调控口腔鳞状细胞癌的作用研究
Regulation of the progression of oral squamous cell carcinoma by 5-hydroxytryptamine receptor 2C via the Gαq/11-Yes-associated protein signaling pathway
摘要
Abstract
Objective To investigate the regulatory effect of 5-hydroxytryptamine receptor 2C(HTR2C)on oral squamous cell carcinoma(OSCC)through the Gαq/11-Yes-associated protein(YAP)signaling pathway.Me-thods The TCGA database was used to analyze the ex-pression of HTR2C in OSCC and normal oral tissues and its relationship with the overall survival rate of patients.The expression level of HTR2C was detected in OSCC tumor microarrays through immunohistochemistry,and the correlation between HTR2C and clinicopathological features was analyzed.HTR2C knockdown HN12 and UM1 cell lines were constructed,and the effects of HTR2C knockdown or its in-hi-bitor(Puerarin)on the proliferation,migration,and invasion of OSCC cells were evaluated through cell counting kit-8,colony formation,wound healing,and Transwell assays.Western blot analysis,quantitative real-time polymerase chain reaction,and immunofluorescence were used to detect the expression and activation of the HTR2C-Gαq/11-YAP signaling pathway.The effect of HTR2C on the growth of OSCC was verified by using a subcutaneous xenograft model of OSCC in nude mice.Results HTR2C was significantly overexpressed in OSCC tissues,and its high expression was significant-ly associated with the poor prognosis of patients(P＜0.05).In vitro experiments demonstrated that the knockdown of HTR2C or use of Puerarin significantly inhibited the proliferation and clonal formation,migration,and invasion abilities of OSCC cells(P＜0.01),and the inhibitory effect of puerarin was dose-dependent.Mechanism studies showed that HTR2C knockdown inhibited YAP phosphorylation at Tyr357 and promoted YAP phosphorylation at Ser127 by reducing the phosphorylation of focal adhesion kinase and Cofilin,thereby inhibiting YAP transcriptional activity and decreasing the expression of its downstream target genes CYR61,CTGF,and AURKA(P＜0.05).In vivo experiments confirmed that inhibiting the expression of HTR2C by using Puerarin could significantly inhibit the growth of OSCC xenograft tumors(P＜0.000 1).This effect was achieved by regulating the YAP signaling pathway.Conclusion The high expression of HTR2C in OSCC was significantly associated with poor prognosis.HTR2C may regulate the proliferation,migration,in-vasion,and tumorigenesis of OSCC cells by activating the Gαq/11-YAP signaling pathway.This study suggests that HTR2C may be a potential therapeutic target for OSCC.However,further clinical research is needed to validate its findings.关键词
口腔鳞状细胞癌/5-羟色胺受体2C/Gαq/11-Yes相关蛋白信号通路/Yes相关蛋白/Puerarin/肿瘤进展Key words
oral squamous cell carcinoma/5-hydroxytryptamine receptor 2C/Gαq/11-Yes-associated protein signaling pathway/Yes-associated protein/Puerarin/tumor progression分类
医药卫生引用本文复制引用
张真语,黄梅,崔浩,孙思露,罗小波,江潞,江宇辰..5-羟色胺受体2C通过Gαq/11-Yes相关蛋白信号通路调控口腔鳞状细胞癌的作用研究[J].国际口腔医学杂志,2026,53(4):526-536,11.基金项目
National Natural Science Foundation of China(82002888) 国家自然科学基金青年项目(82002888) （82002888）
