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Related Concept Videos

Site-Targeted Drug Delivery Systems: Polymeric Carriers01:24

Site-Targeted Drug Delivery Systems: Polymeric Carriers

Polymeric carriers enhance targeted drug delivery by increasing efficacy while minimizing off-target effects. These carriers comprise a biodegradable polymeric backbone integrated with functional elements that enable targeting, improve physicochemical properties, and regulate drug release.Targeting MechanismsThe targeting ability of polymeric carriers is mediated by a homing device, which is a molecular recognition component designed to selectively bind to specific tissues or cells. Monoclonal...
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Site-targeted drug delivery systems enhance therapeutic efficacy while minimizing systemic toxicity and treatment costs. Unlike conventional methods, these systems ensure precise drug delivery, improving bioavailability and reducing side effects. Targeted drug delivery is classified into three levels. First-order targeting directs drugs to the capillary beds of specific organs or tissues. Second-order targets specific cell types, such as tumor cells, using receptor-mediated interactions.

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Related Experiment Video

Updated: Jul 5, 2026

Enhanced Gene Delivery and Expression using Intraosseous Injection of Chitosan Nanoparticles Encapsulated Adenine Base Editor Plasmids
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Published on: May 16, 2025

Receptor-mediated gene delivery using chemically modified chitosan.

T H Kim1, H L Jiang, J W Nah

  • 1School of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Korea.

Biomedical Materials (Bristol, England)
|May 7, 2008
PubMed
Summary
This summary is machine-generated.

Modified chitosan with galactose or mannose ligands enhances cell targeting and gene delivery efficiency. This approach improves non-viral vector performance for potential clinical applications.

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Preparation and Characterization of SDF-1α-Chitosan-Dextran Sulfate Nanoparticles

Published on: January 22, 2015

Area of Science:

  • Biomaterials Science
  • Gene Therapy
  • Nanotechnology

Background:

  • Chitosan is a promising non-viral vector due to its biocompatibility, biodegradability, and low toxicity.
  • Current limitations of chitosan include low cell specificity and transfection efficiency, hindering clinical translation.

Purpose of the Study:

  • To enhance chitosan's cell specificity and transfection efficiency.
  • To investigate the use of galactose or mannose ligands for targeted delivery.
  • To evaluate the efficacy of modified chitosan in vitro and in vivo.

Main Methods:

  • Chitosan was modified with galactose or mannose ligands.
  • Cell specificity and transfection efficiency were assessed in vitro.
  • In vivo studies were conducted to evaluate the performance of the modified vectors.

Main Results:

  • Ligand modification significantly improved cell targeting capabilities.
  • Enhanced receptor-mediated endocytosis led to increased transfection efficiency.
  • Modified chitosan demonstrated improved performance in both in vitro and in vivo models.

Conclusions:

  • Galactose or mannose modification is an effective strategy to overcome chitosan's limitations.
  • Targeted chitosan vectors show potential for improved gene delivery applications.
  • This research paves the way for advanced non-viral gene delivery systems.