RT Journal Article T1 Mesothelial-to-Mesenchymal Transition and Exosomes in Peritoneal Metastasis of Ovarian Cancer A1 Pascual Antón, Lucía A1 Cardeñes, Beatriz A1 Sainz de la Cuesta, Ricardo A1 González Cortijo, Lucía A1 López Cabrera, Manuel A1 Cabañas, Carlos A1 Sandoval, Pilar AB Most patients with ovarian cancer (OvCA) present peritoneal disseminated disease at the time of diagnosis. During peritoneal metastasis, cancer cells detach from the primary tumor and disseminate through the intraperitoneal fluid. The peritoneal mesothelial cell (PMC) monolayer that lines the abdominal cavity is the first barrier encountered by OvCA cells. Subsequent progression of tumors through the peritoneum leads to the accumulation into the peritoneal stroma of a sizeable population of carcinoma-associated fibroblasts (CAFs), which is mainly originated from a mesothelial-to-mesenchymal transition (MMT) process. A common characteristic of OvCA patients is the intraperitoneal accumulation of ascitic fluid, which is composed of cytokines, chemokines, growth factors, miRNAs, and proteins contained in exosomes, as well as tumor and mesothelial suspended cells, among other components that vary in proportion between patients. Exosomes are small extracellular vesicles that have been shown to mediate peritoneal metastasis by educating a pre-metastatic niche, promoting the accumulation of CAFs via MMT, and inducing tumor growth and chemoresistance. This review summarizes and discusses the pivotal role of exosomes and MMT as mediators of OvCA peritoneal colonization and as emerging diagnostic and therapeutic targets. PB MPDI SN 1422-0067 YR 2021 FD 2021-10-25 LK https://hdl.handle.net/20.500.14352/4836 UL https://hdl.handle.net/20.500.14352/4836 LA eng NO Ministerio de Ciencia e Innovación (MICINN) NO Consejo Superior de Investigaciones Científicas (CSIC) DS Docta Complutense RD 6 abr 2025