Direct observation of damage clustering in irradiated DNA with atomic force microscopy
Direct observation of damage clustering in irradiated DNA with atomic force microscopy
复制标题
用原子力显微镜直接观察辐照 DNA 中的损伤聚集
DOI:
10.1093/nar/gkz1159
复制
发表时间:
2020
影响因子:
14.9
通讯作者:
Akiko Uzawa and Hiroshi Ide
中科院分区:
文献类型:
--
作者:
Xu Xu;Toshiaki Nakano;Masataka Tsuda;Ryota Kanamoto,Ryoichi Hirayama;Akiko Uzawa and Hiroshi Ide
Ionizing radiation produces clustered DNA damage that contains two or more lesions in 10–20 bp. It is believed that the complexity of clustered damage (i.e., the number of lesions per damage site) is related to the biological severity of ionizing radiation. However, only simple clustered damage containing two vicinal lesions has been demonstrated experimentally. Here we developed a novel method to analyze the complexity of clustered DNA damage. Plasmid DNA was irradiated with densely and sparsely ionizing Fe-ion beams and X-rays, respectively. Then, the resulting DNA lesions were labeled with biotin/streptavidin and observed with atomic force microscopy. Fe-ion beams produced complex clustered damage containing 2–4 lesions. Furthermore, they generated two or three clustered damage sites in a single plasmid molecule that resulted from the hit of a single track of Fe-ion beams. Conversely, X-rays produced relatively simple clustered damage. The present results provide the first experimental evidence for complex cluster damage.
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DOI:
--
发表时间:
2020
期刊:
EuroSafe Imaging 2020
影响因子:
--
作者:
神崎祐依;納冨昭弘;櫻井良憲;栗原凌佑;Kiyofumi haneda
通讯作者:
Kiyofumi haneda
影响因子:
5
作者:
D. Pang;A. Thierry;A. Dritschilo
通讯作者:
A. Dritschilo
影响因子:
3.4
作者:
Watanabe, Ritsuko;Rahmanian, Shirin;Nikjoo, Hooshang
通讯作者:
Nikjoo, Hooshang
DOI:
10.1016/j.mrfmmm.2003.08.005
发表时间:
2003-10-29
影响因子:
2.3
作者:
Sutherland, BM;Georgakilas, AG;Sutherland, JC
通讯作者:
Sutherland, JC
DOI:
--
发表时间:
2004
期刊:
Journal of Biological Chemistry 279
影响因子:
--
作者:
Katafuchi;A.
通讯作者:
A.