New carrier for protein and drug delivery based on injectable Poly(ethylene glycol)-Poly(?- caprolactone)-Poly(?-amino ester) (PAE-PCL-PEG-PCL-PAE) pH/temperature hydrogel


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Poly(ethylene glycol)-Poly(?- caprolactone)-Poly(?-amino ester) (PAE-PCL-PEG-PCL-PAE) – a novel pH/temperature sensitive and biodegradable hydrogel copolymer used for drug and protein delivery was synthesized. Bovine insulin (BI) and human growth hormone (HGH) loaded well to the copolymer to form a complex mixture by ionic link. The releasing of BI and HGH was investigated in both in vitro. The results show that BI which was loaded in the polymer was released within 13 days, and the releasing time of HGH was 10 days. The complex mixture of human insulin (HI) and copolymer was injected subcutaneously through a needle to rat, and diabetic rat by in vivo. In conclusion, PAE-PCL-PEG-PCL-PAE seems to be useful as a biodegradable and subcutaneously injectable protein and drug carrier.

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Journal: TechConnect Briefs
Volume: 2, Technical Proceedings of the 2007 NSTI Nanotechnology Conference and Trade Show, Volume 2
Published: May 20, 2007
Pages: 421 - 424
Industry sector: Medical & Biotech
Topics: Biomaterials, Materials for Drug & Gene Delivery
ISBN: 1-4200-6183-6