XPD inhibits cell growth and invasion and enhances chemosensitivity in esophageal squamous cell carcinoma by regulating the PI3K/AKT signaling pathway

被引：14

作者：

Jian, Jie ^{[1
]}

Li, Shuang ^{[2
]}

Liu, Li-Zhen ^{[3
]}

Zhen, Li ^{[1
]}

Yao, Ling ^{[1
]}

Gan, Li-Hong ^{[1
]}

Huang, Ya-Qing ^{[1
]}

Fang, Nian ^{[1
]}

机构：

[1] Nanchang Univ, Affiliated Hosp 3, Dept Gastroenterol, 128 Xiangshan North Rd, Nanchang 330008, Jiangxi, Peoples R China

[2] Nanchang Univ, Affiliated Hosp 3, Dept Geriatr & Gen Med, Nanchang 330008, Jiangxi, Peoples R China

[3] Shanghai Univ Med & Hlth Sci, Dept Oncol, Jiading Dist Cent Hosp Affiliated, Shanghai 201800, Peoples R China

来源：

INTERNATIONAL JOURNAL OF MOLECULAR MEDICINE | 2020年 / 46卷 / 01期

基金：

中国国家自然科学基金;

关键词：

xeroderma pigmentosum complementation group D; esophageal squamous cell carcinoma; proliferation; apoptosis; PI3K; AKT signaling pathway; INDUCED APOPTOSIS; CANCER; EXPRESSION; POLYMORPHISMS; PROGRESSION;

D O I：

10.3892/ijmm.2020.4593

中图分类号：

R-3 [医学研究方法]; R3 [基础医学];

学科分类号：

1001 ;

摘要：

Esophageal squamous cell carcinoma (ESCC) is a lethal disease due to its high aggressiveness. The aim of the present study was to investigate the role of xeroderma pigmentosum complementation group D (XPD) in the growth and invasion of ESCC and to elucidate the potential underlying molecular mechanisms. Western blot analysis and RT-qPCR were used to detect the expression level of XPD in ESCC tissue samples and adjacent normal esophageal tissue samples. The pEGFP-N2/XPD plasmid was transfected into human ESCC cell lines (EC9706 and EC109). The proliferation, apoptosis, migration and invasion of EC9706 or EC109 cells were assessed following transfection with the XPD overexpression plasmid. The chemosensitivity of EC9706 or EC109 cells to cisplatin or fluorouracil was evaluated by CCK-8 assay. The expression levels of phosphoinositide 3-kinase (PI3K)/AKT, nuclear factor (NF)-kappa B, Janus kinase 2 (JAK2)/signal transducer and activator of transcription 3 (STAT3) and mitogen-activated protein kinase (MAPK) signaling pathway-related genes were detected by RT-qPCR and western blot analysis. The results demonstrated that the expression level of XPD was markedly lower in ESCC tissue samples than in adjacent normal esophageal tissue samples. The pEGFP-N2/XPD plasmid was successfully transfected into EC9706 or EC109 cells, inducing XPD overexpression. A High XPD expression markedly suppressed cell proliferation, migration and invasion, and increased the apoptotic rate of EC9706 and EC109 cells. Furthermore, the overexpression of XPD significantly increased the chemosensitivity of EC9706 and EC109 cells to cisplatin or fluorouracil. Following XPD overexpression, the expression levels of PI3K, p-AKT, c-Myc, Cyclin D1, Bcl-2, vascular endothelial growth factor (VEGF) and matrix metalloproteinase (MMP)-9 were markedly downregulated, while the expression level of p21 was markedly upregulated. On the whole, the findings of the present study demonstrate that XPD inhibits the growth and invasion of EC9706 and EC109 cells, whilst also enhancing the chemosensitivity of EC9706 and EC109 cells to cisplatin or fluorouracil by regulating the PI3K/AKT signaling pathway. XPD may thus be an underlying target for ESCC treatment and drug resistance.

引用

页码：201 / 210

页数：10

共 38 条

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