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A target specific systemic delivery system of siRNA therapeutics was successfully developed using reducible polyethyleneimine grafted hyaluronic acid [(PEI-SS)-g-HA] conjugates. The PEI-SS was synthesized by Michael addition of low molecular weight PEI (MW = 2000) with cystaminebisacrylamide (CBA), and grafted to carboxyl groups of HA via amide bond formation after activation with 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide...
Target specific delivery of small interfering RNA (siRNA) has been regarded as one of the most important technologies for the development of siRNA therapeutics. In this work, non-toxic low molecular weight (MW) polyethyleneimine (PEI, 2000Da) was cross-linked with cystamine bisacrylamide (CBA) to prepare reducible PEI-SS in the body. Then, PEI-SS was conjugated with hyaluronic acid (HA) in the form...
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