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Related Concept Videos

RNA-seq03:21

RNA-seq

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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
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Updated: May 27, 2025

Amplification of Near Full-length HIV-1 Proviruses for Next-Generation Sequencing
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Analysis of HIV-1-Based Lentiviral Vector Particle Composition by PacBio Long-Read Nucleic Acid Sequencing.

Saqlain Suleman1,2,3, Mohammad S Khalifa1, Serena Fawaz1

  • 1Department of Life Sciences, Brunel University London, London, United Kingdom.

Human Gene Therapy
|February 20, 2025
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Summary
This summary is machine-generated.

Lentivirus (LV) vector production faces purity challenges. This study identified unwanted nucleic acids in LV particles, suggesting their removal is crucial for safe clinical gene therapy applications.

Keywords:
HERVHIV-1PACBIOlentivirus

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Area of Science:

  • Gene Therapy
  • Molecular Biology
  • Virology

Background:

  • Lentivirus (LV) vectors are key for clinical gene therapy, offering permanent gene delivery.
  • Large-scale production of pure LV vector stocks remains a significant challenge for widespread patient application.
  • Understanding the complete nucleic acid content of LV vectors is essential for assessing safety and purity.

Purpose of the Study:

  • To investigate the full nucleic acid composition of recombinant lentivirus (LV) particles.
  • To identify nucleic acids beyond the intended vector genome within LV preparations.
  • To inform strategies for improving the safety and purity of LV vectors for clinical use.

Main Methods:

  • Utilized PacBio long-read, next-generation sequencing of reverse-transcribed RNA.
  • Analyzed nucleic acid content from recombinant HIV-1 particles produced by 293T packaging cells.
  • Focused on identifying all RNA species within the vector particles.

Main Results:

  • Identified nucleic acids other than the intended recombinant vector genome within the LV particles.
  • These additional nucleic acids could potentially be delivered to target cells during gene transfer.
  • The comprehensive nucleic acid profile of clinical-grade LV is not fully characterized.

Conclusions:

  • The presence of unintended nucleic acids in LV vectors necessitates further investigation.
  • Removal of these extraneous components should be considered prior to clinical application of LV vectors.
  • Improved purification methods are required to ensure the safety and efficacy of lentiviral gene therapy.