Mesothelial-to-Mesenchymal Transition and Exosomes in Peritoneal Metastasis of Ovarian Cancer

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Pascual Antón, Lucía and Cardeñes, Beatriz and Sainz de la Cuesta, Ricardo and González Cortijo, Lucía and López Cabrera, Manuel and Cabañas, Carlos and Sandoval, Pilar (2021) Mesothelial-to-Mesenchymal Transition and Exosomes in Peritoneal Metastasis of Ovarian Cancer. International Journal of Molecular Sciences, 22 (21). p. 11496. ISSN 1422-0067

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Official URL: https://doi.org/10.3390/ijms222111496




Abstract

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.


Item Type:Article
Uncontrolled Keywords:ovarian cancer; peritoneal metastasis; mesothelial-to-mesenchymal transition; exosomes
Subjects:Medical sciences > Medicine > Gynecology and Obstetrics
Medical sciences > Medicine > Oncology
ID Code:71674
Deposited On:05 Apr 2022 15:22
Last Modified:06 Apr 2022 07:17

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