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- W1992562479 abstract "Purpose: To investigate chromosomal instability and radiation response mechanisms in glioblastoma cells.Methods and materials: We undertook a comparative analysis of two patient-derived glioblastoma cell lines. Their resistance to low and high linear energy transfer (LET) radiation was assessed using clonogenic survival assay and their intrinsic chromosome instability status using fluorescence in situ hybridization. DNA damage was analyzed by pulsed-field gel electrophoresis and by γ-H2AX foci quantification. Expression of DNA damage response proteins was assessed by immunoblot.Results: Increased radioresistance to X-rays as well as carbon ions was observed in glioblastoma cells exhibiting high levels of naturally occurring chromosomal instability and impaired Ataxia-telangiectasia mutated (ATM) signaling, as reflected by lack of phosphorylation of ATM, CHK2 and p53 after double-strand breaks induction.Conclusion: Our results indicate the existence of highly radioresistant glioblastoma cells, characterized by dysfunctional ATM signaling and high levels of intrinsic chromosomal instability." @default.
- W1992562479 created "2016-06-24" @default.
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- W1992562479 date "2014-09-08" @default.
- W1992562479 modified "2023-09-30" @default.
- W1992562479 title "High resistance to X-rays and therapeutic carbon ions in glioblastoma cells bearing dysfunctional ATM associates with intrinsic chromosomal instability" @default.
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- W1992562479 doi "https://doi.org/10.3109/09553002.2014.937511" @default.
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