Abstract

The growing interest in peptide nucleic acid (PNA) oligomers has led to the development of a very wide variety of PNA derivatives. Among others, the introduction of charged chiral groups on a PNA oligomer has proven effective in improving DNA binding ability, complexation direction and cellular uptake. In particular, the introduction of three adjacent chiral monomers based on d-Lys in the middle of the PNA sequence ( d-Lys-PNA) has produced noteworthy results in modulating the directionality of the binding with the DNA complementary strand and in mismatch detection. Here, through a molecular dynamics approach, a comparative study has been carried out to investigate the structural properties that drive the interaction of the chiral d-Lys-PNA and the corresponding achiral PNA system with DNA as well as RNA complementary strands, starting from the crystal structure of d-Lys-PNA in complex with DNA. The results obtained complement experimental data and indicate that the binding with the RNA molecule, compared to DNA, is differently affected by the addition of three d-Lys groups on the PNA backbone, suggesting that this modification could be taken into account for the development of new PNA-based molecules able to discriminate between DNA and RNA. © 2014 Elsevier Masson SAS.

Autore Pugliese

• Saviano Michele

Tutti gli autori

• Autiero I.; Saviano M.; Langella E.

Titolo volume/Rivista

European journal of medicinal chemistry

Anno di pubblicazione

2015

ISSN

0223-5234

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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