Higuchi M, Yamayoshi A, Yamaguchi T, Iwase R, Yamaoka T, Kobori A, Murakami A. Selective photo-cross-linking of 2'-O-psoralen-conjugated oligonucleotide with RNAs having point mutations.
NUCLEOSIDES NUCLEOTIDES & NUCLEIC ACIDS 2007;
26:277-90. [PMID:
17454737 DOI:
10.1080/15257770701257434]
[Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
It has been reported that point mutations in genes are responsible for various cancers and the selective regulation of the gene expression is an important issue to develop a new type of anticancer drugs. In this report, we present a new type of antisense molecule that photo-cross-links to an oligoribonucleotide having a point mutation site in a sequence specific manner. 2'-O-psoralen-conjugated adenosine was synthesized in four steps from adenosine and introduced in the middle of an oligodeoxyribonucleotide (2'-Ps-oligo). Compared with 5'-O-psoralen-conjugated oligodeoxyribonucleotide (5'-Ps-oligo), which has a psoralen at the 5'-end, 2'-Ps-oligo more selectively photo-cross-linked to a pyrimidine base of the site of alteration from purine to pyrimidine in the oligoribonucleotide.
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