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Functionalizable and ultrastable zwitterionic nanogels.

Gang Cheng1, Luo Mi, Zhiqiang Cao

  • 1Department of Chemical and Biomolecular Engineering, University of Akron, Akron, Ohio 44325, USA.

Langmuir : the ACS Journal of Surfaces and Colloids
|April 22, 2010
PubMed
Summary
This summary is machine-generated.

Zwitterionic poly(carboxybetaine methacrylate) nanogels show excellent stability and controlled drug release. Conjugating ligands enhances cellular uptake, demonstrating potential for targeted drug delivery systems.

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Biomimetic nanogels offer potential for advanced drug delivery.
  • Zwitterionic polymers provide excellent biocompatibility and stability.
  • Functionalization of nanocarriers is crucial for targeted delivery.

Purpose of the Study:

  • To synthesize and characterize multifunctional zwitterionic nanogels.
  • To evaluate the stability, drug encapsulation, and release properties.
  • To assess the targeted delivery capability of functionalized nanogels.

Main Methods:

  • Inverse microemulsion free-radical polymerization for nanogel synthesis.
  • Encapsulation of fluorescein isothiocyanate-dextran (FITC-dextran) as a model drug.
  • Conjugation of cyclo[Arg-Gly-Asp-D-Tyr-Lys] ligands for targeted delivery.
  • Flow cytometry to evaluate cellular uptake by human umbilical vein endothelium cells.

Main Results:

  • pCBMA nanogels demonstrated high stability in 100% fetal bovine serum.
  • Controlled release of FITC-dextran from the nanogels was observed.
  • Functionalized nanogels showed significantly enhanced uptake by endothelial cells.
  • Abundant carboxylate groups allowed for facile ligand conjugation.

Conclusions:

  • Zwitterionic pCBMA nanogels are stable, functionalizable, and capable of controlled drug release.
  • Ligand conjugation via carboxylate groups enhances targeted cellular uptake.
  • These nanogels show significant promise as vectors for targeted drug delivery in biomedical applications.