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Related Concept Videos

Inhibitors of Virion Maturation and Assembly01:19

Inhibitors of Virion Maturation and Assembly

As part of their replication cycle, certain viruses synthesize long precursor proteins called polyproteins within infected host cells. In human immunodeficiency virus (HIV), two major polyproteins are produced: Gag and Gag-Pol. The Gag polyprotein supplies the structural components of the virus, while Gag-Pol includes essential viral enzymes such as reverse transcriptase, integrase, and protease. After synthesis, these polyproteins move to the host cell membrane, where they assemble into an...
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Related Experiment Video

Updated: Jun 19, 2026

A Protocol for the Production of Integrase-deficient Lentiviral Vectors for CRISPR/Cas9-mediated Gene Knockout in Dividing Cells
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Integrase-defective lentiviral vectors: progress and applications.

M B Banasik1, P B McCray

  • 1Department of Pediatrics, Program in Gene Therapy, Carver College of Medicine, The University of Iowa, Iowa City, IA, USA.

Gene Therapy
|October 23, 2009
PubMed
Summary

Non-integrating lentiviral vectors (LVs) provide transient gene expression, avoiding risks of insertional mutagenesis associated with integrating LVs. This technology offers new therapeutic and research avenues for gene delivery.

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Last Updated: Jun 19, 2026

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08:46

Production of Lentiviral Vectors for Transducing Cells from the Central Nervous System

Published on: May 24, 2012

Area of Science:

  • Gene therapy
  • Molecular biology
  • Virology

Background:

  • Lentiviral vectors (LVs) are widely used for gene delivery due to their large packaging capacity and ability to achieve long-term transgene expression.
  • However, the integration of LV gene cassettes into the host genome carries a risk of insertional mutagenesis, potentially disrupting gene expression.
  • This integration is not always necessary for therapeutic or research applications, creating a need for alternative vector systems.

Purpose of the Study:

  • To discuss the development and biological characterization of non-integrating lentiviral vectors (LVs).
  • To explore the potential applications of integration-defective LVs where transient gene expression is desired.
  • To highlight new directions for the advancement of non-integrating LV technology.

Main Methods:

  • Review of recent publications detailing the development of integration-defective LVs.
  • Analysis of biological characterization data for these novel vectors.
  • Discussion of potential applications based on vector properties.

Main Results:

  • Non-integrating LVs have been successfully developed and characterized.
  • These vectors offer transient gene expression, mitigating risks associated with genomic integration.
  • Pseudotyping allows for broad or specific cell tropism, enhancing versatility.

Conclusions:

  • Integration-defective LVs represent a valuable tool for applications requiring transient gene expression.
  • They offer a safer alternative to integrating LVs by avoiding insertional mutagenesis.
  • Further development holds promise for expanded therapeutic and research applications in gene delivery.