CLDN4 as a Novel Diagnostic and Prognostic Biomarker and Its Association with Immune Infiltrates in Ovarian Cancer

作者全名："Hu, Pan; Lei, Li; Wang, Ying; Tian, Xue; Wei, Xia; Jiang, Ni; Liu, Lubin"

作者地址："[Hu, Pan; Lei, Li; Wang, Ying; Jiang, Ni; Liu, Lubin] Chongqing Hlth Ctr Women & Children, Dept Obstet & Gynecol, Chongqing, Peoples R China; [Hu, Pan; Lei, Li; Wang, Ying; Jiang, Ni; Liu, Lubin] Women & Childrens Hosp Chongqing Med Univ, Dept Obstet & Gynecol, Chongqing, Peoples R China; [Tian, Xue] Women & Childrens Hosp Xiushan Cty, Dept Gynecol, Chongqing, Peoples R China; [Wei, Xia] Peoples Hosp Kunming, Kunming, Yunnan, Peoples R China"

通信作者："Liu, LB (通讯作者)，Chongqing Hlth Ctr Women & Children, Dept Obstet & Gynecol, Chongqing, Peoples R China.; Liu, LB (通讯作者)，Women & Childrens Hosp Chongqing Med Univ, Dept Obstet & Gynecol, Chongqing, Peoples R China."

来源：MEDIATORS OF INFLAMMATION

ESI学科分类：IMMUNOLOGY

WOS号：WOS:000971499300001

JCR分区：Q2

影响因子：4.4

年份：2023

卷号：2023

期号：　

开始页：　

结束页：　

文献类型：Article

关键词：　

摘要："Ovarian cancer (OC) is the seventh most prevalent type of cancer in women and the second most common cause of cancer-related deaths in women worldwide. Because of the high rates of relapse, there is an immediate and pressing need for the discovery of innovative sensitive biomarkers for OC patients. Using TCGA and GSE26712 datasets, we were able to identify 17 survival-related DEGs in OC that had differential expression. CLDN4 was the gene that caught our attention the most out of the 17 important genes since its expression was much higher in OC samples than in nontumor samples. The findings of the ROC assays then confirmed the diagnostic utility of the test in screening OC specimens to differentiate them from nontumor specimens. Patients with high CLDN4 expression predicted a shorter overall survival (OS) and disease-specific survival (DSS) than those with low CLDN4 expression, according to clinical research. Patients with low CLDN4 expression predicted longer OS and DSS. Analysis using both univariate and multivariate techniques revealed that CLDN4 expression was an independent factor associated with a poor prognosis for OS and DSS. Based on multivariate analysis, the C-indexes and calibration plots of the nomogram suggested an effective predictive performance for OC patients. After that, we investigated whether or not there was a link between the infiltration of immune cells and the expression of the CLDN4 gene. We found that the expression of CLDN4 was positively associated with Th17 cells, NK CD56bright cells, while negatively associated with Th2 cells, pDC, and T helper cells. In the end, we carried out RT-PCR on our cohort and confirmed that the level of CLDN4 expression was noticeably elevated in OC specimens in comparison to nontumor tissues. The diagnostic usefulness of CLDN4 expression for OC was also validated by the findings of ROC tests. Thus, our findings revealed that CLDN4 may serve as a predictive biomarker in OC to assess both the clinical outcome of OC patients and the level of immune infiltration."

基金机构：Chongqing Medical Scientific Research Project (Joint project of Chongqing Health Commission and Science and Technology Bureau) [2020MSXM041]

基金资助正文：AcknowledgmentsThis study was supported by grants from the Chongqing Medical Scientific Research Project (Joint project of Chongqing Health Commission and Science and Technology Bureau) (no. 2020MSXM041).