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• W2005369871 abstract "Novel multi-biotin grafted poly(lactic acid) and its self-assembling nanoparticles capable of binding to streptavidin Hao Yan1,2, Weimin Jiang1,2, Yinxing Zhang1,2, Ying Liu1,2, Bin Wang1,2, Li Yang1,2, Lihong Deng1,2, Gurinder K Singh1,2, Jun Pan1,21Bioengineering College, Chongqing University, 2Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Chongqing, People&#39;s Republic of ChinaAbstract: Targeted drug delivery requires novel biodegradable, specific binding systems with longer circulation time. The aim of this study was to prepare biotinylated poly(lactic acid) (PLA) nanoparticles (NPs) which can meet regular requirements as well conjugate more biotins in the polymer to provide better binding with streptavidin. A biotin-graft-PLA was synthesized based on previously published biodegradable poly(ethylene glycol) (PEG)-graft-PLA, with one polymer molecule containing three PEG molecules. Newly synthesized biotin-graft-PLA had three biotins per polymer molecule, higher than the previous biotinylated PLA (≤1 biotin per polymer molecule). A PEG with a much lower molecular weight (MW ~1900) than the previous biotinylated PLA (PEG MW ≥3800), and thus more biocompatible, was used which supplied good nonspecific protein-resistant property compatible to PEG-graft-PLA, suggesting its possible longer stay in the bloodstream. Biotin-graft-PLA specifically bound to streptavidin and self-assembled into NPs, during which naproxen, a model small molecule (MW 230 Da) and hydrophobic drug, was encapsulated (encapsulation efficiency 51.88%). The naproxen-loaded NPs with particle size and zeta potential of 175 nm and —27.35 mV realized controlled release within 170 hours, comparable to previous studies. The biotin-graft-PLA NPs adhered approximately two-fold more on streptavidin film and on biotin film via a streptavidin arm both in static and dynamic conditions compared with PEG-graft-PLA NPs, the proven nonspecific protein-resistant NPs. The specific binding of biotin-graft-PLA NPs with streptavidin and with biotin using streptavidin arm, as well as its entrapment and controlled release for naproxen, suggest potential applications in targeted drug delivery.Keywords: targeted drug delivery, bioactive, biodegradable, poly(ethylene glycol) (PEG), controlled release, naproxen" @default.
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• W2005369871 date "2012-01-01" @default.
• W2005369871 modified "2023-09-27" @default.
• W2005369871 title "Novel multi-biotin grafted poly(lactic acid) and its self-assembling nanoparticles capable of binding to streptavidin" @default.
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• W2005369871 doi "https://doi.org/10.2147/ijn.s24011" @default.
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