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Updated: Jul 11, 2026

Mouse Genome Engineering Using Designer Nucleases

Mouse Genome Engineering Using Designer Nucleases

Published on: April 2, 2014

Manipulating the mouse genome to engineer precise functional syntenic replacements with human sequence.

Helen A C Wallace¹, Fatima Marques-Kranc, Melville Richardson

¹Institute for Stem Cell Research, University of Edinburgh, King's Buildings, West Mains Road, Edinburgh EH9 3JQ, United Kingdom.

|January 16, 2007

Summary

Recombinase-mediated genomic replacement (RMGR) enables large-scale mouse genome editing. This method successfully replaced mouse DNA with human DNA, creating accurate models for genetic diseases like alpha thalassemia.

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Area of Science:

Genetics
Genomic Engineering
Transgenic Technology

Background:

Current transgenic technologies have limitations for studying large genomic regions.
Accurate modeling of human genetic diseases in mice is crucial for research.

Purpose of the Study:

To develop a novel strategy for replacing large mouse genomic segments with human syntenic regions.
To create advanced mouse models for studying human gene expression and genetic disorders.

Main Methods:

Developed recombinase-mediated genomic replacement (RMGR) using heterotypic lox sites and Cre recombinase.
Modified mouse ES cells and human BACs for segmental genomic exchange.
Generated homozygous mice with human alpha globin regulatory domains.

Main Results:

Successfully replaced a >100 kb mouse genomic segment with its human equivalent.
Created mice producing only human alpha globin chains.
Developed an accurate mouse model for human alpha thalassemia.

Conclusions:

RMGR is a feasible and powerful technique for large-scale genomic replacement.
This method overcomes limitations of current transgenic approaches.
RMGR facilitates the study of human gene expression and the modeling of genetic diseases.