Expanding Catch and Release DNA Decoy (CRDD) Technology with Pyrimidine Mimics.

ABSTRACT: Catch and release DNA decoys (CRDDs) utilize photochemically responsive nucleoside analogues that generate abasic sites upon exposure to light. Herein, we describe the synthesis and evaluation of four candidate CRDD monomers containing nucleobases that mimic endogenous pyrimidines: 2-nitroimidazole (2-NI), 2-nitrobenzene (2-NB), 2-nitropyrrole (2-NP) and 3-nitropyrrole (3-NP). Our studies reveal that 2-NI and 2-NP can function as CRDDs, whereas 3-NP and 2-NB undergo decomposition and transformation to a higher-ordered structure upon photolysis, respectively. When incorporated into DNA, 2-NP undergoes rapid photochemical cleavage of the anomeric bond (1.8 min half-life) to yield an abasic site. Finally, we find that all four pyrimidine mimics show significantly greater stability when base-p

SUBMITTER: Kennelly SA 

PROVIDER: S-EPMC9588621 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature