Co-delivery of cisplatin and doxorubicin from calcium phosphate beads / matrix scaffolds for osteosarcoma therapy
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Bone substitute materials with a controlled drug release ability can fill cavities caused by the resection of bone tumours and thereby combat any leftover bone cancer cells. The combined release of different cytostatics seems to enhance their toxicity. In this study, calcium phosphate beads and matrix scaffolds are combined for a long-term co-delivery of cis-diamminedichloroplatinum (cisplatin, CDDP) and doxorubicin hydrochloride (DOX) as clinical relevant model drugs. Tricalcium phosphate/alginate beads as additional drug carrier are produced by droplet extrusion with ionotropic gelation and incorporated in scaffold matrix by freeze gelation without sintering. CDDP shows a short burst release while DOX has a continuous release measurable over the entire study period of 40days. Drug release from matrix is decreased by ~30% compared to release from beads. Nevertheless, all formulations follow the Korsmeyer-Peppas release kinetic model and show Fickian diffusion. Cytotoxic activity was conducted on MG-63 osteosarcoma cells after 1, 4, and 7days with WST-1 cell viability assay. Co-loaded composites enhance activity towards MG-63 cells up to ~75% toxicity while reducing the released drug quantity. The results suggest that co-loaded beads/matrix scaffolds are highly promising for osteosarcoma therapy due to synergistic effects over a long period of more than a month.
|Keywords:||Cisplatin; Co-delivery; Doxorubicin; Drug carrier; Scaffold||Issue Date:||3-Apr-2017||Publisher:||Elsevier||Project:||ERC starting grant BiocerEng||Grant number:||205509||Journal/Edited collection:||Materials science & engineering. C, Materials for biological applications||Start page:||427||End page:||435||Band:||77||Pages:||9||Type:||Artikel/Aufsatz||ISSN:||09284931||Secondary publication:||yes||Document version:||Postprint||DOI:||10.26092/elib/2621||URN:||urn:nbn:de:gbv:46-elib73876||Institution:||Universität Bremen||Faculty:||Fachbereich 04: Produktionstechnik, Maschinenbau & Verfahrenstechnik (FB 04)||Institute:||Fachgebiet 17: Keramische Werkstoffe und Bauteile|
|Appears in Collections:||Forschungsdokumente|
checked on Dec 9, 2023
checked on Dec 9, 2023
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