Atomic scissors: a new method of tracking the 5-bromo-2'-deoxyuridine-labeled DNA in situ.

Atomic scissors: a new method of tracking the 5-bromo-2'-deoxyuridine-labeled DNA in situ.
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DOI:
10.1371/journal.pone.0052584
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Koberna K
Koberna K
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Ligasová A;Strunin D;Liboska R;Rosenberg I;Koberna K

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A new method of the light microscopy detection of BrdU-labeled DNA in situ is described. It is based on the oxidative attack at the deoxyribose moiety by copper(I) in the presence of oxygen, which leads to the abstraction of hydrogen atom from deoxyribose culminating in the elimination of the nucleobase, scission of the nucleic-acid strand and formation of frequent gaps. The gaps allow the reaction of the antibodies with the commonly used markers of replication (e.g. 5-bromo-2′-deoxyuridine), which are otherwise masked. The method developed makes it possible to detect nuclear and mitochondrial DNA replication efficiently. In most cases, it does not inhibit effective protein detections and in addition enables simultaneous localization of newly-synthesized RNA. The alternative presently-used methods result in protein denaturation and/or extensive DNA cleavage followed by the DNA-bound proteins peeling off.
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