Wu D, Zhang N, Kong B, Hang H, Wang H. Synthesis and purification of biotinylated oligodeoxynucleotides containing single TpT dimeric pyrimidine (6-4) pyrimidone lesion.
Anal Bioanal Chem 2019;
411:4123-4129. [PMID:
30671606 DOI:
10.1007/s00216-018-01572-6]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 12/14/2018] [Accepted: 12/27/2018] [Indexed: 11/28/2022]
Abstract
Ultraviolet (UV) radiation could induce pyrimidine-related dimeric lesions in genomic DNA. Though the cyclobutane pyrimidine dimers (CPDs) are the most abundant UV-induced lesions, the pyrimidine (6-4) pyrimidone photoproducts (6-4PPs) may have more serious, potentially lethal, and mutagenic effects. It is important to have 6-4PP-containing oligodeoxynucleotides to be prepared for studying their adverse biological effects. Here, we developed a UV-irradiated water droplet method for the preparation of a biotinylated, 6-4PP-containing 10-mer oligodeoxynucleotide. By the use of HPLC purification and enrichment twice, the final yield is estimated to be about 8.1%. In contrast, without applying droplet technique, the direct UV irradiation against oligonucleotide-containing aqueous solution, the product yield is very low. The enzymatic hydrolyzation of the obtained product shows a 6-4PP characteristic ion transition of 545.12 → 432.13 in negative ion mode UHPLC-Q-TOF/MS. The established procedure for the preparation of 6-4PP-containing oligonucleotides is convenient with an improved yield. Graphical abstract ᅟ.
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