Microbiota-Derived Corisin Is Elevated in Early Cervical Neoplasia and Drives Pathogenic Cellular Programs.

Cervical cancer remains a major global health challenge and a leading cause of gynecological cancer-related mortality, particularly in developing countries. Although persistent human papillomavirus infection is the primary driver of cervical carcinogenesis, host factors such as immune dysregulation and microbiome dysbiosis may contribute to disease progression. Corisin is a microbiota-derived peptide implicated in epithelial injury and fibrosis, but its role in cervical neoplasia is unknown. To investigate its potential involvement, circulating corisin levels were measured in 27 women with cervical intraepithelial neoplasia (CIN) or cervical cancer and compared with those in 15 healthy women. Corisin localization in cervical carcinoma tissues was examined by immunohistochemistry, and its biological effects were evaluated in HeLa cells. Circulating corisin levels were significantly elevated in patients with CIN and cervical cancer, with the highest levels observed in CIN3 and cervical squamous cell carcinoma. Corisin was detected within cervical carcinoma tissues in intracellular and extracellular compartments adjacent to tumor cells. In HeLa cells, corisin accumulated in mitochondria, impaired cell-cycle progression, induced apoptosis, increased p21 expression, and promoted epithelial-mesenchymal transition-like morphological changes. These findings suggest that corisin is elevated from the early stages of cervical neoplasia, is present within the cervical tumor microenvironment, and may contribute to pathogenic cellular processes associated with cervical cancer progression.