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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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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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Manufacture and Drug Delivery Applications of Silk Nanoparticles
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Genetically engineered nanocarriers for drug delivery.

Pu Shi1, Joshua A Gustafson1, J Andrew MacKay1

  • 1Department of Pharmacology and Pharmaceutical Sciences, University of Southern California, Los Angeles, CA, USA.

International Journal of Nanomedicine
|April 18, 2014
PubMed
Summary

Genetic engineering offers precise control over nanocarriers for improved drug delivery, overcoming limitations of conventional small molecules. These engineered nanoparticles enhance therapeutic efficacy and reduce side effects.

Keywords:
GE drug carriersgene deliverynon-polymeric drug carrierpolymeric drug carrier

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Area of Science:

  • Biotechnology
  • Nanomedicine
  • Pharmaceutical Sciences

Background:

  • Conventional small-molecule drugs face challenges like cytotoxicity, poor solubility, and off-target effects.
  • Multifunctional nanocarriers are explored to enhance drug delivery, but their design presents pharmaceutical development hurdles.
  • Genetic engineering provides a novel approach to precisely control nanocarrier size, structure, and drug attachment sites.

Purpose of the Study:

  • To review recent advancements in genetically engineered nanocarriers for drug and gene delivery.
  • To highlight the advantages of genetic engineering in overcoming limitations of traditional drug delivery systems.
  • To discuss both polymeric and non-polymeric genetically engineered nanocarrier applications.

Main Methods:

  • Review of recent scientific literature on genetically engineered nanocarriers.
  • Categorization of nanocarriers into polymeric (e.g., elastin-like polypeptides, silk-elastin-like protein polymers) and non-polymeric (e.g., vault proteins, viral proteins).
  • Analysis of applications in drug and gene delivery systems.

Main Results:

  • Genetically engineered nanocarriers offer superior control over size, structure, and drug conjugation compared to conventional methods.
  • Polymeric carriers like elastin-like polypeptides and silk-elastin-like protein polymers show promise in drug delivery.
  • Non-polymeric carriers, including vault and viral proteins, are also emerging as viable drug delivery platforms.
  • These engineered nanostructures facilitate targeted drug delivery and controlled release, addressing limitations of small-molecule drugs.

Conclusions:

  • Genetic engineering is a powerful tool for developing advanced nanocarriers with enhanced drug delivery capabilities.
  • Genetically engineered polymeric and non-polymeric nanostructures represent a significant step forward in nanomedicine.
  • Further research into these engineered systems holds potential for more effective and safer therapeutics.