Evaluation of PAX8 expression promotes the proliferation of stomach Cancer cells

Significance analysis of PAX8 expression in endometrial carcinoma

To analyze the expression and prognostic value of paired-box 8 (PAX8) expression in uterine corpus endometrial carcinoma (UCEC) by bioinformatics. The expression of PAX8 gene in UCEC was analyzed by R language and immunohistochemistry. The correlation between PAX8 expression and clinicopathological features was analyzed by R language. The prognostic factors was analyzed by univariate/multivariate regression. The survival curve of patients was analyzed by Kaplan-Meier Plotter (K-M Plotter). The diagnostic value of PAX8 in UCEC was analyzed by receiver operating characteristic curve, and the relationship between PAX8 expression and methylation was analyzed by Ualcan. The relationship between methylation and prognosis was analyzed by MethSurv database. The expression of PAX8 in cancer tissues was significantly higher than that in normal tissues. The expression of PAX8 was related to clinical stage, age, histological type, histologic grade, tumor invasion and disease-specific survival event. Univariate/multivariate regression analysis showed that clinical stage, tumor invasion, and PAX8 expression were the influence factors of overall survival (OS), while histologic grade and PAX8 expression were the influence factors of disease-specific survival, and patients with low expression had a longer OS. The area under the curve of receiver operating characteristic curve was 0.81 for PAX8 diagnosis of UCEC. PAX8 was hypomethylated in cancer tissue, and patients with hypermethylated PAX8 had a longer OS. The high expression of PAX8 induced by hypomethylation may play an important role in the occurrence and prognosis of UCEC.

Kelch-like protein 14 promotes proliferation and migration of ovarian cancer cells

Kelch-like protein 14 (KLHL14) belongs to the Kelch gene family, which interacts with TorsinA and is associated with dystonia symptoms. However, the effect of KLHL14 on tumorigenesis remains unclear; thus, we aimed to explore the effects of KLHL14 on ovarian cancer cells. By analyzing information regarding ovarian cancer patients obtained from The Cancer Genome Atlas (TCGA)-Ovarian Cancer Database, we found that the KLHL14 gene is highly expressed in ovarian cancer, and patients with high KLHL14 expression had lower survival than those with low expression. qRT-PCR and western blot results revealed that the mRNA and protein levels of KLHL14 in ovarian cancer cells were higher in A-2780 cells than in KGN cells. After constructing cell lines with a knocked down KLHL14 gene, we used the MTT assay, flow cytometry with propidium iodide (PI), Annexin V-FITC/PI, and transwell assay and found that knockdown of KLHL14 gene inhibited proliferation of A-2780 cells, caused cell G0/G1 phase arrest, promoted apoptosis, and inhibited migration and invasiveness. In addition, Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis revealed that KLHL14 may promote development of ovarian cancer by regulating signaling pathways such as mTOR, WNT, and TGF-beta. In short, the KLHL14 gene plays an important role in ovarian cancer development and may be a target for ovarian cancer detection and treatment.