title: Controlled dual release of basic fibroblast growth factor and indomethacin from heparin-conjugated polymeric micelle.
abstract: This work describes the development of heparinized polymeric micelle as a novel injectable carrier for the dual drug delivery that can simultaneously release basic fibroblast growth factor (bFGF) and indomethacin (IMC), which can promote the regeneration of damaged tissue and prevent the inflammatory response after implantation. Tetronic-PCL-heparin for the preparation of heparinized polymeric micelle was synthesized by introducing PCL as a biodegradable linkage on Tetronic, following the conjugation of heparin. The mean diameter of the formed TCH micelle was around 114 nm and increases in the micelle size after single and dual drug loading were observed. Loading efficiencies of IMC and bFGF were 30.9% and 70.5%, respectively. In vitro dual drug release profiles from TCH micelles were investigated. IMC was more slowly released from dual drug-loaded micelle over 3 weeks as compared with single drug-loaded one. bFGF was released over 2 months in a controlled manner. Therefore, the release profile results support that TCH micelle could not only incorporate a hydrophobic drug into the core but also bind with bFGF to heparin that exists on its outer shell. The TCH micelle will have enhanced therapeutic effects on the target site which may be required the multi-function of drugs to use.
authors: Department of Molecular Science and Technology, Ajou University, 5 Wonchon, Yeoungtong, Suwon 443-749, Republic of Korea.
authors: Jung Seok
authors: JS
authors: Lee
authors: Jin Woo
authors: JW
authors: Bae
authors: Yoon Ki
authors: YK
authors: Joung
authors: Seung Jin
authors: SJ
authors: Lee
authors: Dong Keun
authors: DK
authors: Han
authors: Ki Dong
authors: KD
authors: Park
mesh_terms: D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000737:chemistry*; D003692:Delayed-Action Preparations; D004337:Drug Carriers; D016222:Fibroblast Growth Factor 2 / Q000737:chemistry*; D006493:Heparin / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D007213:Indomethacin / Q000737:chemistry*; D008823:Micelles; D011108:Polymers / Q000737:chemistry
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D003692:Delayed-Action Preparations; D004337:Drug Carriers; D008823:Micelles; D011108:Polymers; D016222:Fibroblast Growth Factor 2; D006493:Heparin; D007213:Indomethacin