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dc.contributor.authorAlarcón, Sebastián
dc.contributor.authorToro, María de los Ángeles
dc.contributor.authorVillarreal, Carolina
dc.contributor.authorMelo, Rómulo
dc.contributor.authorFernández, Rodrigo
dc.contributor.authorAyuso Sacido, Ángel 
dc.contributor.authorUribe, Daniel
dc.contributor.authorSan Martín, Rody
dc.contributor.authorQuezada, Claudia
dc.description.abstractGlioblastoma multiforme is one of the most malignant types of cancer. This is mainly due to a cell subpopulation with an extremely aggressive potential, called glioblastoma stem-like cells (GSCs). These cells produce high levels of extracellular adenosine which has been associated with increased chemoresistance, migration, and invasion in glioblastoma. In this study, we attempted to elucidate the mechanisms that control extracellular adenosine levels in GSC subtypes. By using primary and U87MG-derived GSCs, we associated increased extracellular adenosine with the mesenchymal phenotype. [3H]-adenosine uptake occurred mainly through the equilibrative nucleoside transporters (ENTs) in GSCs, but mesenchymal GSCs have lower expression and ENT1-mediated uptake activity than proneural GSCs. By analyzing expression and enzymatic activity, we determined that ecto-5′-nucleotidase (CD73) is predominantly expressed in proneural GSCs, driving AMPase activity. While in mesenchymal GSCs, both CD73 and Prostatic Acid Phosphatase (PAP) contribute to the AMP (adenosine monophosphate) hydrolysis. We did not observe significant differences between the expression of proteins involved in the metabolization of adenosine among the GCSs subtypes. In conclusion, the lower expression and activity of the ENT1 transporter in mesenchymal GSCs contributes to the high level of extracellular adenosine that these GSCs
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subjectGlioblastoma stem-like cells (GSCs)spa
dc.subjectEquilibrative nucleoside transporter 1 (ENT1)spa
dc.titleDecreased Equilibrative Nucleoside Transporter 1 (ENT1) Activity Contributes to the High Extracellular Adenosine Levels in Mesenchymal Glioblastoma Stem-Like
dc.typejournal articlespa
dc.rights.accessRightsopen accessspa
dc.description.extent2,37 MBspa

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Atribución-NoComercial-SinDerivadas 3.0 España
Except where otherwise noted, this item's license is described as Atribución-NoComercial-SinDerivadas 3.0 España