New poly(ester-amide) copolymers modified with polyether (PEAE) for anticancer drug encapsulation |
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| Authors: | Anita Chudecka-G?az Joanna Szczeblińska Aneta Cymbaluk-P?oska Joachim Kohn |
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| Institution: | 1. Chair and Department of Gynaecological Surgery and Gynaecological Oncology of Adults and Adolescents, Pomeranian Medical University, Szczecin, Poland;2. Division of Biomaterials and Microbiological Technologies, West Pomeranian University of Technology, Nanotechnology Centre for Research and Education, Szczecin, Poland;3. Department of Chemistry, New Jersey Centre for Biomaterials, Rutgers, The State University of New Jersey, Piscataway, NJ, USA |
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| Abstract: | New poly(ester–amide) copolymers modified with polyethers were developed for carboplatin encapsulation. These new copolymers contain hydrophobic blocks made of tyrosine derivative and dimer fatty acid, and poly(ethylene glycol) (PEG) as hydrophilic blocks. Short-term hydrolytic degradation revealed high water absorption, slight increase of pH of simulated body fluid and change of sample shape, which indicated the erosive mechanism of polymers degradation. Poly(ester-amide)-PEG copolymers were used for microspheres preparation and carboplatin encapsulation. A double emulsification process was used to produce microspheres with an average diameter of 20–30?μm. It was found that the amount of drug released was controlled by the molecular mass of PEG used for microspheres preparation. Mathematical models were used to elucidate the release mechanism of the carboplatin from the microspheres. The results demonstrate that poly(ester-amide)-PEG copolymers may be used for targeted carboplatin encapsulation and release. |
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| Keywords: | Biodegradable polymers drug release microencapsulation polymer synthesis |
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