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Related Concept Videos

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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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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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Related Experiment Video

Updated: Jun 23, 2026

A Flow Cytometry-Based Cell Surface Protein Binding Assay for Assessing Selectivity and Specificity of an Anticancer Aptamer
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Published on: September 13, 2022

Aptamers and aptamer targeted delivery.

Amy C Yan1, Matthew Levy

  • 1Department of Biochemistry, Albert Einstein College of Medicine, Bronx, NY, USA.

RNA Biology
|May 22, 2009
PubMed
Summary
This summary is machine-generated.

Aptamers, initially RNA molecules for simple targets, now offer advanced applications. Recent advances enable aptamers for cell-specific recognition and targeted delivery in diagnostics and therapeutics.

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Last Updated: Jun 23, 2026

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Biochemistry

Background:

  • Aptamers, initially RNA-based, have evolved significantly from simple ligand binders.
  • Early aptamer technology focused on RNA species for tagging or inhibiting basic targets.
  • The potential of aptamers has expanded beyond initial applications.

Purpose of the Study:

  • To review recent advancements in aptamer technology.
  • To highlight novel applications of aptamers in cell-specific recognition and delivery.
  • To explore the evolving role of aptamers in diagnostics and therapeutics.

Main Methods:

  • Review of recent scientific literature on aptamer applications.
  • Analysis of emerging aptamer techniques and their capabilities.
  • Synthesis of findings on aptamer-based cell recognition and delivery systems.

Main Results:

  • Aptamer technology has advanced to enable diverse applications.
  • Aptamers are now utilized as small molecule inhibitors, diagnostic tools, and therapeutics.
  • Significant progress has been made in aptamer-based cell-specific recognition and delivery.

Conclusions:

  • Aptamers have transitioned from simple binders to versatile tools in biotechnology.
  • Recent innovations have unlocked novel applications for aptamers in medicine and diagnostics.
  • Aptamers show great promise for targeted cellular applications, including delivery and recognition.