RT Journal Article T1 TGF‐β‐induced IGFBP‐3 is a key paracrine factor from activated pericytes that promotes colorectal cancer cell migration and invasion A1 Navarro, Rocío A1 Tapia‐Galisteo, Antponio A1 Martín García, Laura A1 Tarín, Carlos A1 Corbacho, Cesáreo A1 Gómez‐López, Gonzalo A1 Sánchez Tirado, Esther A1 Campuzano Ruiz, Susana A1 González Cortés, Araceli A1 Yáñez-Sedeño Orive, Paloma A1 Compte, Marta A1 Álvarez‐Vallina, Luis A1 Sanz, Laura AB The crosstalk between cancer cells and the tumor microenvironment has been implicated in cancer progression and metastasis. Fibroblasts and immune cells are widely known to be attracted to and modified by cancer cells. However, the role of pericytes in the tumor microenvironment beyond endothelium stabilization is poorly understood. Here, we report that pericytes promoted colorectal cancer (CRC) cell proliferation, migration, invasion, stemness, and chemoresistance in vitro, as well as tumor growth in a xenograft CRC model. We demonstrate that coculture with human CRC cells induced broad transcriptomic changes in pericytes, mostly associated with TGF‐β receptor activation. The prognostic value of a TGF‐β response signature in pericytes was analyzed in CRC patient data sets. This signature was found to be a good predictor of CRC relapse. Moreover, in response to stimulation by CRC cells, pericytes expressed high levels of TGF‐β1, initiating an autocrine activation loop. Investigation of secreted mediators and underlying molecular mechanisms revealed that IGFBP‐3 is a key paracrine factor from activated pericytes affecting CRC cell migration and invasion. In summary, we demonstrate that the interplay between pericytes and CRC cells triggers a vicious cycle that stimulates pericyte cytokine secretion, in turn increasing CRC cell tumorigenic properties. Overall, we provide another example of how cancer cells can manipulate the tumor microenvironment. PB Wiley SN 1574-7891 YR 2020 FD 2020 LK https://hdl.handle.net/20.500.14352/98609 UL https://hdl.handle.net/20.500.14352/98609 LA eng NO R. Navarro, A.Tapia-Galisteo, L.Martín-García, C. Tarín, C. Corbacho, G. Gómez-López, E. Sánchez-Tirado, S. Campuzano, A. González-Cort és, P. Yáñez-Sedeño, M. Compte, L. Álvarez-Vallina, L. Sanz. Molecular Oncology14(2020) 2609–2628 NO Comunidad de Madrid NO Ministerio de Economía y Competitividad (España) NO European Commission NO Instituto de Salud Carlos III DS Docta Complutense RD 29 sept 2024