Changes in Glial Fibrillary Acidic Protein and Karyotype During Culturing of Two Cell Lines Established from Human Glioblastoma Multiforme

Overview

Journal Cell Tissue Res

Specialties Anatomy & Histology
Cell Biology

Date 1991 Jul 1

PMID 1655272

Citations 26

Authors

V Bocchini

R Casalone

P Collini

G Rebel

F Lo Curto

Affiliations

Soon will be listed here.

Abstract

Two human cell lines (GL15 and GL22) derived from glioblastoma multiforme were established and characterized by immunohistochemical and cytogenetic techniques. The expression of glial fibrillary acidic proteins and the karyotype were analyzed at different passages for both cell lines. The course of marker-pattern differed in the two cell lines. The main findings were a cell-density-dependent expression of glial fibrillary acidic protein in the cell line GL15 at all passages and a decreased expression of this protein over time in the cell line GL22. Both cell lines had hyperdiploid karyotypes and exhibited glioma-specific chromosomal abnormalities (gain of chromosome 7 and loss of chromosome 10). In the GL15 cell line no relevant chromosomal changes were produced during culturing, whereas in the GL22 cell line a hypodiploid clone appeared at the 42nd passage. The immunohistochemical and cytogenetic data resulting from this study confirm that the two cell lines established in our laboratory originated from astrocytic tumor cells.

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