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Home
Development Of A Novel Method To Detect Aav Vector Integration.

Home
Development Of A Novel Method To Detect Aav Vector Integration.

Related Experiment Video

Bidirectional Retroviral Integration Site PCR Methodology and Quantitative Data Analysis Workflow

Bidirectional Retroviral Integration Site PCR Methodology and Quantitative Data Analysis Workflow

Published on: June 14, 2017

Development of a Novel Method to Detect AAV Vector Integration.

Junping Zhang¹, Thao Thi Dang², Tsai-Yu Lin²

¹Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202, USA.

|March 28, 2026

View abstract on PubMed

Summary

This summary is machine-generated.

A new CRISPR-Cas9 method enables PCR-free, long-read sequencing to accurately detect adeno-associated virus (AAV) integration sites in gene therapy. This approach overcomes previous limitations for unbiased characterization of AAV DNA integration.

Keywords:

AAV integration AAV vector CRISPR-Cas9 hybridization capture nanopore sequencing

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Isolation of Next-Generation Gene Therapy Vectors through Engineering, Barcoding, and Screening of Adeno-Associated Virus AAV Capsid Variants

Published on: October 18, 2022

Area of Science:

Molecular Biology
Genetics
Gene Therapy

Background:

Adeno-associated virus (AAV) integration is critical for gene therapy safety.
Existing methods for detecting AAV integration sites are limited by biases from library preparation, sequencing, and bioinformatics.

Purpose of the Study:

To develop a novel, unbiased method for characterizing AAV DNA integration sites.
To overcome the limitations of PCR-based amplification in detecting AAV integration.

Main Methods:

Developed a PCR-free amplification strategy using CRISPR-Cas9 cleavage for AAV DNA.
Combined this strategy with long-read nanopore sequencing for unbiased integration junction detection.
Validated the method using AAV-transduced HeLa single-cell clones and compared it with probe hybridization capture and short-read sequencing.

Main Results:

The CRISPR-Cas9-based, PCR-free workflow accurately identified AAV integration junctions.
Strong consistency was observed between the novel method and probe hybridization capture/short-read sequencing.
The approach preserves native AAV integration states.

Conclusions:

The developed CRISPR-Cas9-enabled, PCR-free long-read sequencing workflow is a promising tool for characterizing AAV integration events.
This method offers an unbiased approach to AAV integration site analysis, crucial for gene therapy safety.