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Related Experiment Video

Updated: Feb 19, 2026

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Live Visualization of HIV-1 Proviral DNA Using a Dual-Color-Labeled CRISPR System.

Yingxin Ma1,2, Mingxiu Wang1, Wei Li1

  • 1State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences , Wuhan, P.R. China.

Analytical Chemistry
|November 10, 2017
PubMed
Summary
This summary is machine-generated.

Researchers developed a dual-color CRISPR system to visualize single-copy integrated HIV-1 DNA in latent infections. This novel imaging tool offers a simpler and more efficient method for tracking the virus within host cells.

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Area of Science:

  • Molecular Biology
  • Virology
  • Biotechnology

Background:

  • HIV latency presents a significant obstacle to curing HIV/AIDS.
  • Visualizing single-copy integrated proviral HIV DNA is crucial for virology and clinical applications but technically challenging.

Purpose of the Study:

  • To develop an advanced imaging system for detecting integrated HIV-1 proviral DNA in latently infected cells.
  • To establish a versatile platform for imaging single genomic loci in living cells.

Main Methods:

  • A dual-color labeled CRISPR system was engineered using two different color Quantum Dots (QDs).
  • Bioorthogonal ligation reactions were employed to fluorescently label CRISPR components.
  • Colocalization signals of QDs were used to map integrated HIV sequences in living cells.

Main Results:

  • The dual-color CRISPR system successfully imaged integrated HIV-1 proviral DNA in latently infected cells.
  • The method achieved precise mapping of integrated HIV sequences through QD colocalization.
  • The CRISPR system demonstrated greater ease of use and efficiency compared to Zinc Finger Proteins and TALENs for imaging genomic loci.

Conclusions:

  • The developed CRISPR system provides a powerful tool for imaging proviral HIV-1.
  • This method serves as a versatile platform for imaging specific single genomic loci in living cells.
  • The approach offers advancements in HIV research and potential clinical applications.