Lenox HJ, McCoy CP, Sheppard TL. Site-specific generation of deoxyribonolactone lesions in DNA oligonucleotides.
Org Lett 2001;
3:2415-8. [PMID:
11463330 DOI:
10.1021/ol016255e]
[Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
[reaction: see text] An efficient method for the site-specific generation of 2-deoxyribonolactone oxidative DNA damage lesions from a "photocaged" nucleoside analogue was developed. A nucleoside phosphoramidite bearing a C-1' nitrobenzyl cyanohydrin was prepared and incorporated into DNA oligonucleotides using automated DNA synthesis. The caged analogue, which was stable in aqueous solution, was converted to the 2-deoxyribonolactone lesion by UV irradiation. DNA containing the caged analogue and the deoxyribonolactone site were characterized by electrospray mass spectrometry (ES-MS).
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