| Přispěvatelé: |
[Serrano-Garrido,O, Peris-Torres,C, Redondo-García,S, Asenjo,HG, Plaza-Calonge,MDC, Rodríguez-Manzaneque,JC] GENYO, Centre for Genomics and Oncological Research: Pfizer/Universidad de Granada/Junta de Andalucía, Granada, Spain. [Serrano-Garrido,O] Faculty of Medicine, University of Panama, Ciudad Universitaria, Panamá, Panama. [Fernandez-Luna,JL] Molecular Genetics Unit, Hospital Universitario Marqués de Valdecilla, Santander, Spain., This research was funded by Ministerio de Economía y Competitividad and Instituto de Salud Carlos III from Spain, co-financed by FEDER (PI16/00345 to JCRM), by Ministerio de Ciencia, Innovación y Universidades from Spain (PID2019-104416RB-I00), and by Consejería de Salud de la Junta de Andalucía (OH-0028-2018, PE-0225-2018, both to JCRM). |
| Popis: |
Gliomas in general and the more advanced glioblastomas (GBM) in particular are the most usual tumors of the central nervous system with poor prognosis. GBM patients develop resistance to distinct therapies, in part due to the existence of tumor cell subpopulations with stem-like properties that participate in trans-differentiation events. Within the complex tumor microenvironment, the involvement of extracellular proteases remains poorly understood. The extracellular protease ADAMTS1 has already been reported to contribute to the plasticity of cancer cells. Accordingly, this basic knowledge and the current availability of massive sequencing data from human gliomas, reinforced the development of this work. We first performed an in silico study of ADAMTS1 and endothelial markers in human gliomas, providing the basis to further assess these molecules in several primary glioblastoma-initiating cells and established GBM cells with the ability to acquire an endothelial-like phenotype. Using a co-culture approach of endothelial and GBM cells, we noticed a relevant function of ADAMTS1 in GBM cells leading the organization of endothelial-like networks and, even more significantly, we found a blockade of the formation of tumor-spheres and a deficient response to hypoxia in the absence of ADAMTS1. Our data support a chief role of this protease modulating the phenotypic plasticity of GBM. |
