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International Journal of Hematology

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01.03.2012 | Progress in Hematology

Molecular nature of radiation injury and DNA repair disorders associated with radiosensitivity

verfasst von: Yuji Masuda, Kenji Kamiya

Erschienen in: International Journal of Hematology | Ausgabe 3/2012

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Abstract

Ionizing radiation (IR), as well as a wide variety of chemicals and reactive oxygen species, can cause insults in DNA integrity. However, IR is distinct from other agents in that produces clustered DNA damage, particularly double-strand DNA breaks (DSBs). The discovery of radiosensitive human diseases has revealed that the molecular mechanisms underlying the biological effects of IR impact cellular responses to and repair of DSBs. One class of diseases, including ataxia-telangiectasia, displays a defect in checkpoint response to DSBs. Another class of diseases exhibits severe combined immunodeficiency and defects in DSB repair. Importantly, radiosensitive human diseases are also associated with increased risks of leukemia/lymphoma. In this review, we summarize the molecular nature of IR-induced DNA damage, and provide an overview of the molecular mechanisms of checkpoint response to and repair of DSBs. Lastly, we discuss the roles of these mechanisms in the development of the immune system and the suppression of lymphoma/leukemia, based on the clinical features and experiments with model mice.

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Titel: Molecular nature of radiation injury and DNA repair disorders associated with radiosensitivity
verfasst von: Yuji Masuda
Kenji Kamiya
Publikationsdatum: 01.03.2012
Verlag: Springer Japan
Erschienen in: International Journal of Hematology / Ausgabe 3/2012
Print ISSN: 0925-5710
Elektronische ISSN: 1865-3774
DOI: https://doi.org/10.1007/s12185-012-1008-y

Springer Medizin

Molecular nature of radiation injury and DNA repair disorders associated with radiosensitivity

Abstract

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