Resumen

RINCON, Verónica et al. Initiation and characterization of a glioblastoma multiforme derived cell line. Colomb. Med. [online]. 2007, vol.38, n.1, pp.52-60. ISSN 1657-9534.

Introduction: Cell lines and primary cultures are a useful tool for studying basic biology, development and therapy responses in cancer and nervous system tumors. Aim: To establish and characterize a human glioblastoma multiforme (GBM) derived cell line as an in vitro biological model to study nervous system cancer chemotherapy and gene therapy. Materials and methods: A resected tumor piece was obtained from a patient with clinical and histopathological diagnosis of GBM. It was processed to obtain viable cells to culture and histological sections, which were immunostained to glial fibrillary acid protein (GFAP) and S-100 protein (calcium binding protein) and to evaluate expression of apoptosis related proteins p53 and Bcl-2. Finally a cytogenetic evaluation was carried out. Results: Histopathological examination confirmed classic findings of GBM. Typical cytomorphological features of GBM were found in cells of the primary cultures: bipolar or unipolar cells, flat fibroblastoid cells, process-bearing cells with scant cytoplasm and 3 or more processes. It was found a differential expression of the four markers, which had a nuclear and cytoplasmatic staining pattern throughout studied subcultures. Cell line exhibited a high level of aneuploidy with modal chromosomal number between 43-45, with presence of poliploidy (55-102 <4n>, XXYY) and endoreduplication (end 45, X, -Y). Conclusion: It was established a GBM derived cell line with a stable phenotype, maintaining morphological cell and cytogenetic characteristics.

Palabras clave : Cell Line; Human glioblastoma multiforme; Immunocytochemistry; Immunochemistry; Bcl-2.

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