Progress towards completing the mutant mouse null resource.

Document Type

Article

Publication Date

3-2022

Publication Title

Mammalian genome : official journal of the International Mammalian Genome Society

Keywords

JMG, Animals, Gene Knockout Techniques, Genome, Mice, Mice, Knockout, Mutagenesis, Phenotype

JAX Source

Mamm Genome 2022 Mar; 33(1):123-134

Volume

33

Issue

1

First Page

123

Last Page

134

ISSN

1432-1777

PMID

34698892

DOI

https://doi.org/10.1007/s00335-021-09905-0

Grant

OD023222

Abstract

The generation of a comprehensive catalog of null alleles covering all protein-coding genes is the goal of the International Mouse Phenotyping Consortium. Over the past 20 years, significant progress has been made towards achieving this goal through the combined efforts of many large-scale programs that built an embryonic stem cell resource to generate knockout mice and more recently employed CRISPR/Cas9-based mutagenesis to delete critical regions predicted to result in frameshift mutations, thus, ablating gene function. The IMPC initiative builds on prior and ongoing work by individual research groups creating gene knockouts in the mouse. Here, we analyze the collective efforts focusing on the combined null allele resource resulting from strains developed by the research community and large-scale production programs. Based upon this pooled analysis, we examine the remaining fraction of protein-coding genes focusing on clearly defined mouse-human orthologs as the highest priority for completing the mutant mouse null resource. In summary, we find that there are less than 3400 mouse-human orthologs remaining in the genome without a targeted null allele that can be further prioritized to achieve our overall goal of the complete functional annotation of the protein-coding portion of a mammalian genome.

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