RT info:eu-repo/semantics/article
T1 Characterization of a new human giant cell glioblastoma cell line,GB-val4, with unusual TP53 mutation
A1 Muñoz Hidalgo, Lisandra
A1 San Miguel, Teresa
A1 Megías Vericat, Javier
A1 Gil Benso, Rosario
A1 Cerdá Nicolás, Miguel J.
A1 López Ginés, Concha
K1 Glioblastoma
K1 TP53
K1 Glioblastoma stem cells
K1 GB-val4
K1 Cell line
AB A novel cell line derived from a human glioblastoma (GB), named GB-val4, has been established and characterized. GB-val4 cells were hyperdiploid, with many numerical and structural chromosomal rearrangements. The cell line did not show mutations in IDH1/IDH2 genes or EGFR amplification, but it presented two missense mutations in TP53, which imply a very low p53 protein activity within the cell line. Cells also had gain of TP73 copies, hypermethylation of APC, CASP8 and RASSF1, increased expression of ARF1, CDH1 and NF-κB and decreased expression of CDKN2A. Tumorigenity was demonstrated by transplant of GB-val4 cells into athymic nude mice, where solid tumors were grown. Interestingly, a high percentage of GB-val4 cells presented expression of GSC markers CD133 or CD44. These GSC markers were increased in neurosphere cultures, which better mimic solid tumor conditions and maintain the genetic features of the tumor cells. In this study, we aimed to define the characteristics of this novel cell line and its applications in human cancer research. With its genetic features and a poor p53 activity, GB-val4 cells resemble GB tumors. Moreover, the important presence of GSCs in adherent cultures and especially in neurosphere cultures makes GB-val4 an attractive tool to study cancer stem cells, deepen in the knowledge the molecular pathways of GB and develop new therapeutic strategies for patients with these tumors.
SN 1749-0774 online
YR 2019
FD 2019
LK http://riull.ull.es/xmlui/handle/915/36159
UL http://riull.ull.es/xmlui/handle/915/36159
LA en
DS Repositorio institucional de la Universidad de La Laguna
RD 27-dic-2024