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Viral vectors for gene therapy

P D Robbins1, S C Ghivizzani

  • 1Department of Molecular Genetics and Biochemistry, University of Pittsburgh, School of Medicine, PA 15261, USA.

Pharmacology & Therapeutics
|November 6, 1998
PubMed
Summary
This summary is machine-generated.

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Viruses are efficient gene-delivery vehicles for gene therapy, with various viral vectors like retrovirus, adenovirus, and adeno-associated virus (AAV) showing promise in clinical trials for treating diseases.

Area of Science:

  • Biotechnology
  • Molecular Biology
  • Virology

Background:

  • Viruses naturally excel at delivering genetic material into cells while evading immune responses.
  • These viral capabilities make them promising candidates for gene therapy applications.

Purpose of the Study:

  • To review the advantages and limitations of different viral vectors for gene therapy.
  • To explore the development and application of viral and nonviral gene-delivery systems.

Main Methods:

  • Review of existing literature on viral vector systems.
  • Analysis of the properties of retroviral, adenoviral, adeno-associated virus (AAV), and herpes simplex virus vectors.
  • Discussion of chimeric and nonviral gene-delivery approaches.

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Main Results:

  • Each viral vector (retrovirus, adenovirus, AAV, herpes simplex virus) possesses unique strengths and weaknesses impacting gene therapy efficacy.
  • Adenoviral vectors offer broad cell tropism but face immune elimination challenges in vivo.
  • Retroviral vectors enable permanent genomic integration but require cell division, while AAV has limited DNA capacity.

Conclusions:

  • Viral vectors are the most efficient gene transfer methods currently available.
  • Ongoing research focuses on optimizing viral vectors, developing chimeric systems, and exploring nonviral alternatives for enhanced gene delivery and expression.
  • Several viral vectors, including retrovirus, adenovirus, and AAV, are in Phase 1 clinical trials for treating various diseases.