Fiche publication
Date publication
novembre 2006
Auteurs
Membres identifiés du Cancéropôle Est :
Pr LEHN Jean-Marie
Tous les auteurs :
Sreenivasachary N, Hickman DT, Sarazin D, Lehn JM
Lien Pubmed
Résumé
Dynamic cationic polymers were generated in aqueous media from functionally complementary monomers bearing nucleobase groups. (1)H NMR spectroscopy was used to follow the polycondensation reaction of the nucleobase-appended dihydrazides 1 and 2 with the dialdehydes B and C. The reversibility of these polymers was established by proton NMR spectroscopy through exchange of the dihydrazide 2 with polymer 1 B. The polymers 1 B, 2 B, 1 C, and 2 C represent dynamic biopolymers of nucleic acid type, DyNAs. Electrostatic interaction of these polymers with polyanionic entities, such as polyphosphates, polynucleotides, and polyaspartic acid, was shown to take place. It induces a change in size of the dynamic polymer, as it responds by an increase in degree of polymerization to an increase of the overall anionic charge introduced, that is, to the total electrostatic interaction.
Référence
Chemistry. 2006 Nov 15;12(33):8581-8.
