Synthesis And Binding Study Of Phosphonate Analogues Of Pnas And Their Hybrids With Pnas

Polyanionic Carboxyethyl Peptide Nucleic Acids (ce-PNAs): Synthesis and DNA Binding

New polyanionic modifications of polyamide nucleic acid mimics were obtained. Thymine decamers were synthesized from respective chiral α- and γ-monomers, and their enantiomeric purity was assessed. Here, we present the decamer synthesis, purification and characterization by MALDI-TOF mass spectrometry and an investigation of the hybridization properties of the decamers. We show that the modified γ-S-carboxyethyl-T₁₀ PNA forms a stable triplex with polyadenine DNA.

New peptide nucleic acid analogues: synthesis and applications

Peptide nucleic acids are oligonucleotide mimics characterised by high chemical and enzymatic stability, high specificity and affinity toward complementary DNA/RNA. The lack of charge and polar groups in the backbone decrease their solubility in aqueous environment and their ability to cross cell membranes, reducing their performance in in vivo applications. To improve solubility, increase affinity and specificity of binding and to control recognition between nucleic acids, several analogues bearing modifications on the nucleobase, nucleobase-backbone linker and on the backbone were synthesised. This paper describes the synthesis and applications of Peptide nucleic acid analogues and discusses the potential of analogues for which no application is reported.