title: Functionalizable and ultrastable zwitterionic nanogels.
abstract: Multifunctional biomimetic nanogels based on zwitterionic poly(carboxybetaine methacrylate) (pCBMA) were synthesized by inverse microemulsion free-radical polymerization. pCBMA nanogels exhibited excellent stability in 100% fetal bovine serum. Dextran labeled with fluorescein isothiocyanate (FITC-dextran) was encapsulated in nanogels as a model drug. Encapsulated FITC-dextran exhibited controlled release from the pCBMA nanogel. Additionally, pCBMA nanogels carry abundant carboxylate groups as functional groups used to conjugate ligands to the nanogels for targeted drug delivery. Flow cytometry results obtained showed that pCBMA nanogels conjugated with cyclo[Arg-Gly-Asp-D-Tyr-Lys] ligands dramatically improved the nanogel uptake by primary human umbilical vein endothelium cells. Functionalizable zwitterionic pCBMA nanogels hold great potential as targeted drug-delivery vectors for biomedical applications.
authors.affiliation: Department of Chemical and Biomolecular Engineering, University of Akron, Akron, Ohio 44325, USA.
authors.forename: Gang
authors.initials: G
authors.lastname: Cheng
authors.forename: Luo
authors.initials: L
authors.lastname: Mi
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Cao
authors.forename: Hong
authors.initials: H
authors.lastname: Xue
authors.forename: Qiuming
authors.initials: Q
authors.lastname: Yu
authors.forename: Louisa
authors.initials: L
authors.lastname: Carr
authors.forename: Shaoyi
authors.initials: S
authors.lastname: Jiang
mesh_terms: D040761:Biomimetic Materials / Q000138:chemical synthesis / Q000737:chemistry*; D003911:Dextrans / Q000008:administration & dosage / Q000737:chemistry; D004337:Drug Carriers / Q000138:chemical synthesis / Q000737:chemistry*; D016503:Drug Delivery Systems; D004730:Endothelium, Vascular / Q000166:cytology / Q000378:metabolism; D005434:Flow Cytometry; D016650:Fluorescein-5-isothiocyanate / Q000737:chemistry; D006801:Humans; D008024:Ligands; D000080385:Nanogels; D011092:Polyethylene Glycols / Q000138:chemical synthesis / Q000737:chemistry*; D011094:Polyethyleneimine / Q000138:chemical synthesis / Q000737:chemistry*
chemical_list: D003911:Dextrans; D004337:Drug Carriers; D008024:Ligands; D000080385:Nanogels; C413692:polyethylene glycol polyethyleneimine nanogel; D011092:Polyethylene Glycols; D011094:Polyethyleneimine; D016650:Fluorescein-5-isothiocyanate