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Sequence-specific RNA Cleavage by PNA Conjugates of the Metal-free Artificial Ribonuclease Tris(2-aminobenzimidazole)

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Specialty Chemistry
Date 2015 May 16
PMID 25977723
Citations 11
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Abstract

Tris(2-aminobenzimidazole) conjugates with antisense oligonucleotides are effective site-specific RNA cleavers. Their mechanism of action is independent of metal ions. Here we investigate conjugates with peptide nucleic acids (PNA). RNA degradation occurs with similar rates and substrate specificities as in experiments with DNA conjugates we performed earlier. Although aggregation phenomena are observed in some cases, proper substrate recognition is not compromised. While our previous synthesis of 2-aminobenzimidazoles required an HgO induced cyclization step, a mercury free variant is described herein.

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