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RESEARCH PRODUCT

A New Hyaluronic Acid Derivative Obtained from Atom Transfer Radical Polymerization as a siRNA Vector for CD44 Receptor Tumor Targeting

Giovanna PitarresiFabio Salvatore PalumboAntonella Bavuso VolpeGaetano GiammonaFlavia Bongiovì

subject

Polymers and PlasticsAtom-transfer radical-polymerizationBioengineeringMethacrylateBiomaterialschemistry.chemical_compoundMonomerchemistryDynamic light scatteringPolymerizationHyaluronic acidPolymer chemistryMaterials ChemistryZeta potentialSurface chargeBiotechnology

description

Two derivatives of hyaluronic acid (HA) have been synthesized by atom transfer radical polymerization (ATRP), starting from an ethylenediamino HA derivative (HA-EDA) and by using diethylaminoethyl methacrylate (DEAEMA) as a monomer for polymerization. Both samples, indicated as HA-EDA-pDEAEMA a and b, are able to condense siRNA, as determined by gel retardation assay and resulting complexes show a size and a zeta potential value dependent on polymerization number, as determined by dynamic light scattering measurements. In vitro studies performed on HCT 116 cell line, that over express CD44 receptor, demonstrate a receptor mediated uptake of complexes, regardless of their surface charge.

https://doi.org/10.1002/mabi.201500129