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Related Experiment Video

Updated: May 1, 2026

Cloning and Large-Scale Production of High-Capacity Adenoviral Vectors Based on the Human Adenovirus Type 5
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User-Friendly Replication-Competent MAdV-1 Vector System with a Cloning Capacity of 3.3 Kilobases.

Zhichao Zhang1,2, Xiaojuan Guo2, Wenzhe Hou2

  • 1School of Public Health, Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou 014040, China.

Viruses
|May 25, 2024
PubMed
Summary
This summary is machine-generated.

Researchers developed a new reverse genetics system for mouse adenovirus (MAdV-1) enabling easier genetic modification. This replication-competent MAdV-1 vector system simplifies transgene insertion and gene region modification for studying host-adenovirus interactions.

Keywords:
Gibson assemblyinfectious plasmidmouse adenovirus 1packaging capacityreplication competenttransgenevector

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Area of Science:

  • Virology
  • Molecular Biology
  • Gene Therapy Vectors

Background:

  • Mouse adenoviruses (MAdV) are crucial for studying host-adenovirus interactions.
  • Existing reverse genetics systems for MAdV are not user-friendly, hindering research progress.

Purpose of the Study:

  • To establish a simplified and efficient reverse genetics system for MAdV-1.
  • To create a replication-competent MAdV-1 vector for genetic manipulation and studying host-adenovirus interactions.

Main Methods:

  • Construction of an infectious MAdV-1 plasmid (pKRMAV1) using Gibson assembly.
  • Generation of an intermediate plasmid (pKMAV1-ER) containing key MAdV-1 regions (E3, fiber, E4, E1).
  • Insertion of a reporter gene (GFP) and creation of a modified plasmid (pKMAV1-IXCG) for transgene replacement via restriction-assembly.

Main Results:

  • Successful rescue of recombinant MAdV-1 viruses carrying reporter genes (GFP, luciferase) after plasmid transfection.
  • Characterization of recombinant viruses demonstrating efficient gene transduction, plaque formation, and in vitro/in vivo replication.
  • Determination that MAdV-1 vectors can tolerate exogenous fragment insertions up to 3.3 kb.

Conclusions:

  • A novel, replication-competent MAdV-1 vector system has been successfully established.
  • This system simplifies the modification of transgenes and key viral gene regions (E1, fiber, E3, E4).
  • The developed MAdV-1 vector system is a valuable tool for advancing research in host-adenovirus interactions and gene delivery.