Colorectal Cancer Cell-Derived Small Extracellular Vesicles Educate Human Fibroblasts to Stimulate Migratory Capacity

Author(s)

Clerici, Stefano Piatto ^[1] ; Peppelenbosch, Maikel ^[2] ; Fuhler, Gwenny ^[2] ; Consonni, Silvio Roberto ^[1] ; Ferreira-Halder, Carmen Verissima ^[1]

Affiliation

^[1] Univ Estadual Campinas, Inst Biol, Dept Biochem & Tissue Biol, Campinas - Brazil

^[2] Erasmus Univ, Dept Gastroenterol & Hepatol, Med Ctr Rotterdam, Rotterdam - Netherlands

• Document type: Journal article
• Source: FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY; v. 9, JUL 15 2021.
• Web of Science Citations: 0

Abstract

Colorectal cancer (CRC) is in the top 10 cancers most prevalent worldwide, affecting equally men and women. Current research on tumor-derived extracellular vesicles (EVs) suggests that these small extracellular vesicles (sEVs) play an important role in mediating cell-to-cell communication and thus potentially affecting cancer progression via multiple pathways. In the present study, we hypothesized that sEVs derived from different CRC cell lines differ in their ability to reprogram normal human fibroblasts through a process called tumor education. The sEVs derived from CRC cell lines (HT29 and HCT116) were isolated by a combination of ultrafiltration and polymeric precipitation, followed by characterization based on morphology, size, and the presence or absence of EV and non-EV markers. It was observed that the HT29 cells displayed a higher concentration of sEVs compared with HCT116 cells. For the first time, we demonstrated that HT29-derived sEVs were positive for low-molecular-weight protein tyrosine phosphatase (Lmwptp). CRC cell-derived sEVs were uptake by human fibroblasts, stimulating migratory ability via Rho-Fak signaling in co-incubated human fibroblasts. Another important finding showed that HT29 cell-derived sEVs are much more efficient in activating human fibroblasts to cancer-associated fibroblasts (CAFs). Indeed, the sEVs produced by the HT29 cells that are less responsive to a cytotoxic agent display higher efficiency in educating normal human fibroblasts by providing them advantages such as activation and migratory ability. In other words, these sEVs have an influence on the CRC microenvironment, in part, due to fibroblasts reprogramming. (AU)

• FAPESP's process: 15/20412-7 - Low molecular weight protein tyrosine phosphatase in colorectal cancer: from the bench to product generation
• Grantee: Carmen Veríssima Ferreira
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 18/03593-6 - Tumor-educated platelets and metastasis: relevance of LMWPTP and extracellular vesicles in Colorectal Cancer
• Grantee: Stefano Piatto Clerici
• Support Opportunities: Scholarships in Brazil - Doctorate