口腔疾病防治2025，Vol.33Issue(4)：278-288,11.DOI:10.12016/j.issn.2096-1456.202440460
过氧化物还原酶-4在口腔鳞状细胞癌中的表达及对癌细胞增殖、迁移和侵袭的影响
Expression of peroxiredoxin 4 in oral squamous cell carcinoma and its effects on cancer cell proliferation,mi-gration,and invasion
摘要
Abstract
Objective To investigate the expression of peroxiredoxin 4(PRDX4)in oral squamous cell carcinoma(OSCC)and its effect on the proliferation,migration,and invasion of OSCC cells.Methods The Cancer Genome Atlas(TCGA)database was used to analyze the expression of PRDX4 in OSCC.Quantitative reverse transcription polymerase chain reaction(qRT-PCR)and Western Blot(WB)were used to detect the mRNA and protein expression of PRDX4 in OSCC cell lines and normal oral mucosal epithelial cells.PRDX4 was knocked down in CAL-27 cells and divided into two groups:the si-PRDX4 group and si-NC group.SCC-9 cells overexpressing PRDX4 were divided into two groups:the PRDX4 overexpression group(transfected with pcDNA3.1-PRDX4 plasmid)and the vector group(the control group;transfected with pcDNA3.1-NC plasmid).A cell counting kit-8(CCK-8)and plate colony formation assay were used to detect cell proliferation.Transwell assay and cell scratch test were used to detect cell invasion and migration ability.WB was used to detect the effects of knockdown or overexpression of PRDX4,p38MAPK agonist or inhibitor on the ex-pression of p38MAPK-related signaling pathway proteins,and epithelial mesenchymal transition proteins in OSCC cells.Results PRDX4 was highly expressed in OSCC tissues and cell lines.The results of qRT-PCR and WB showed that PRDX4 was highly expressed in OSCC cell lines compared with normal oral mucosal epithelial cells.The CCK-8 assay showed that the si-PRDX4 group had significantly lower OD values than the si-NC group at 24,48,and 72 h(P＜0.05).The PRDX4 overexpression group had a significantly higher OD value than the vector group at 24,48,and 72 h(P＜0.05).The plate colony formation assay showed that the si-PRDX4 group had a significantly lower number of colonies than the si-NC group(P＜0.05).The number of colonies formed in the PRDX4 overexpression group was significantly higher than that in the vector group(P＜0.05).The cell scratch test showed that the wound healing area of the si-PRDX4 group was less than that of the si-NC group(P＜0.05).The scratch healing area of the PRDX4 overexpression group was significantly higher than that of the vector group(P＜0.05).The Transwell invasion assay showed that the number of transmembrane cells in the si-PRDX4 group was lower than that in the si-NC group(P＜0.05).The number of trans-membrane cells in the PRDX4 overexpression group was significantly higher than that in the vector group(P＜0.05).The WB results showed that knockdown and overexpression of PRDX4 could downregulate and upregulate the expres-sion of the p38MAPK signaling pathway and epithelial-mesenchymal transition related proteins,respectively,and the ad-dition of p38MAPK agonist and inhibitor could significantly reverse the expression of related proteins.Conclusion PRDX4 is highly expressed in OSCC.Knocking down the expression of PRDX4 in OSCC cells can downregulate the ex-pression of p38 MAPK signal axis and EMT-related signal proteins,thereby inhibiting the proliferation,migration,inva-sion,and epithelial-mesenchymal transition of cells.关键词
氧化物还原酶-4/促癌因子/口腔鳞状细胞癌/p38MAPK信号通路/上皮间充质转化/增殖/侵袭/迁移Key words
peroxiredoxin-4/cancer-promoting factors/oral squamous cell carcinoma/p38 mitogen-activated protein kinase signaling pathway/epithelial-mesenchymal transition/proliferation/invasion/migration分类
口腔医学引用本文复制引用
耿华,李磊,杨杰,柳云霞,陈晓东..过氧化物还原酶-4在口腔鳞状细胞癌中的表达及对癌细胞增殖、迁移和侵袭的影响[J].口腔疾病防治,2025,33(4):278-288,11.基金项目
山东省自然科学基金面上项目(ZR2020MH188) This study was supported by the grants from Shandong Provincial Natural Science Foundation General Project(No.ZR2020MH188). （ZR2020MH188）
