The Yield, Processing, and Biological Consequences of Clustered DNA Damage Induced by Ionizing Radiation
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概要
- 論文の詳細を見る
After living cells are exposed to ionizing radiation, a variety of chemical modifications of DNA are induced either directly by ionization of DNA or indirectly through interactions with water-derived radicals. The DNA lesions include single strand breaks (SSB), base lesions, sugar damage, and apurinic/apyrimidinic sites (AP sites). Clustered DNA damage, which is defined as two or more of such lesions within one to two helical turns of DNA induced by a single radiation track, is considered to be a unique feature of ionizing radiation. A double strand break (DSB) is a type of clustered DNA damage, in which single strand breaks are formed on opposite strands in close proximity. Formation and repair of DSBs have been studied in great detail over the years as they have been linked to important biological endpoints, such as cell death, loss of genetic material, chromosome aberration. Although non-DSB clustered DNA damage has received less attention, there is growing evidence of its biological significance . This review focuses on the current understanding of (1) the yield of non-DSB clustered damage induced by ionizing radiation (2) the processing, and (3) biological consequences of non-DSB clustered DNA damage.
- 日本放射線影響学会の論文
- 2009-01-16
著者
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Yokoya Akinari
Japan Atomic Energy Agency Advanced Res. Sci. Center
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Yokoya Akinari
Japan Atomic Energy Agency Advanced Research Science Center
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Fujii Kentaro
Japan Atomic Energy Agency Advanced Research Science Center
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Shikazono Naoya
Japan Atomic Energy Research Institute
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Shikazono Naoya
Japan Atomic Energy Agency Advanced Research Science Center
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NOGUCHI Miho
Japan Atomic Energy Agency, Advanced Research Science Center
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URUSHIBARA Ayumi
Japan Atomic Energy Agency, Advanced Research Science Center
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Urushibara Ayumi
Japan Atomic Energy Agency Advanced Research Science Center
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Noguchi Miho
Japan Atomic Energy Agency Advanced Research Science Center
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