Effect of GLIS1 on the Lymph Node Metastasis of Cervical Squamous Carcinoma Based on Transcriptome Analysis

Cervical cancer remains the leading cause of cancer-related mortality among female reproductive malignancies, and lymph node metastasis (LNM) represents the major reason for its poor prognosis. In this study, we aimed to identify transcriptome differences in patients with cervical squamous cell carcinoma (CSCC) who developed LNM or not and to outline the function of GLIS1 in determining metastatic fate in CSCC. In The Cancer Genome Atlas-endocervical adenocarcinoma project, patients with LNM had shorter overall survival than those without. Transcriptome data from CSCC patients with and without LNM were analyzed to screen for differentially expressed genes (DEGs). DEGs were enriched in metastasis-related pathways, such as extracellular matrix organization, cell-cell adhesion, and regulation of tissue remodeling. GLIS1 was overexpressed in tumor tissues of patients with LNM. COMP and ITGA11 were screened as downstream targets of GLIS1. GLIS1 promoted their transcription by binding to the promoter regions of COMP and ITGA11. GLIS1 enhanced the migration, invasion, and epithelial-mesenchymal transition in CSCC cells, while the knockdown of COMP or ITGA11 reversed the promotion of GLIS1 on CSCC cell malignant phenotype. Together, our results demonstrate that GLIS1 might be related to the LNM of CSCC patients via COMP and ITGA11.