Gliobastomas are characterized by invasion in surrounding brain tissue and radioresistance. In the present paper, we examined cell survival, invasion and integrin/matrix metalloproteinase-2 and -9 interactions in human glioblastoma cell lines. Cellular radioresistance was enhanced by adhesion to extracellular matrix dependent on the cell line, whereas radiogenic induction of β1- and β3-integrins correlates with increased adhesion. Irradiation reduced invasion in a cell line-dependent manner. Mechanistically, a regulatory influence of β1- and β3-integrins especially on matrix-metalloproteinase-2 was demonstrated. Conclusively, β1- and β3-integrins play an essential role for the radiosensitivity and invasion of human glioblastoma cells.
«Gliobastomas are characterized by invasion in surrounding brain tissue and radioresistance. In the present paper, we examined cell survival, invasion and integrin/matrix metalloproteinase-2 and -9 interactions in human glioblastoma cell lines. Cellular radioresistance was enhanced by adhesion to extracellular matrix dependent on the cell line, whereas radiogenic induction of β1- and β3-integrins correlates with increased adhesion. Irradiation reduced invasion in a cell line-dependent manner. Mec...
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