Transcriptional response to ionizing radiation in human radiation sensitive cell lines

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• 作者：H. L ; mark ; S.A. Nahas ; J. Aarø ; e ; R. Gatti ; A.-L. Bø ; rresen-Dale ; O.K. Rø ; dningen
• 关键词：Radiation therapy ; Radiation sensitivity ; Gene expression
• 刊名：Radiotherapy and Oncology
• 出版年：2007
• 出版时间：June 2007
• 年：2007
• 卷：83
• 期：3
• 页码：256-260
• 全文大小：190 K

文摘

Background and purpose

Radiation is a common treatment of cancer, but some patients show severe side effects when exposed to small doses of radiation. The aim of this study was to explore the underlying cause of radiation sensitivity in a group of radiation sensitive patients.

Materials and methods

Lymphoblastoid cell lines from 5 normal individuals, 4 Ataxia Telangiectasia (AT), and 12 non-AT radiation sensitive (RS) patients were irradiated. RNA was isolated before and after radiation and hybridized to 15k cDNA microarrays and gene expression was recorded.

Results and conclusion

The RS cell lines showed an expression phenotype different from both the AT and normal cell lines. Six of the RS cell lines had a distinct expression profile before radiation. This implies that the RS patients are a heterogeneous group, but that six of the patients may have a common cause of radiation sensitivity.