A gene expression resource generated by genome-wide lacZ profiling in the mouse

Author:

Tuck Elizabeth1,Estabel Jeanne12,Oellrich Anika1,Maguire Anna Karin1,Adissu Hibret A.3,Souter Luke1,Siragher Emma1,Lillistone Charlotte1,Green Angela L.1,Jones Hannah Wardle1,Carragher Damian M.14,Karp Natasha A.1,Smedley Damian1,Adams Niels C.15,Bussell James N.1,Adams David J.1,Ramírez-Solis Ramiro1,Steel Karen P.16,Galli Antonella1,White Jacqueline K.1,

Affiliation:

1. Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1SA, UK

2. Current address: Wellcome Trust–Medical Research Council Cambridge Stem Cell Institute, University of Cambridge, Tennis Court Road, Cambridge, CB2 1QR, UK

3. Centre for Modeling Human Disease, Toronto Centre for Phenogenomics, 25 Orde Street, Toronto, M5T 3H7, Canada

4. Current address: National Institute for Medical Research, The Ridgeway, Mill Hill, London, NW7 1AA, UK

5. Current address: LabPMM GmbH, Bunsenstr. 7a, 82152 Martinsried, Germany

6. Current address: Wolfson Centre for Age-Related Diseases, King’s College London, London, SE1 1UL, UK

Abstract

Knowledge of the expression profile of a gene is a critical piece of information required to build an understanding of the normal and essential functions of that gene, and any role it may play in the development or progression of disease. High throughput, large scale efforts are on-going internationally to characterise reporter tagged knockout mouse lines. As part of that effort, we report an open access adult mouse expression resource in which the expression profile of 424 genes has been assessed in up to 47 different organs, tissues and sub-structures using a lacZ reporter gene. Many specific and informative expression patterns were noted. Expression was most commonly observed in the testis and brain, and was most restricted in white adipose tissue and mammary gland. Over half of the genes assessed presented with an absent or localised expression pattern (categorised as 0-10 positive structures). A link between complexity of expression profile and viability of homozygous null animals was observed; inactivation of genes expressed in ≥21 structures was more likely to result in reduced viability by postnatal day 14 compared with more restricted expression profiles. For validation purposes, this mouse expression resource was compared with Bgee, a federated composite of RNA based expression datasets. Strong agreement was observed indicating a high degree of specificity in our data. Furthermore, there were 1,207 observations of expression of a particular gene in an anatomical structure where Bgee had no data, indicating a large amount of novelty in our dataset. Examples of expression data corroborating and extending genotype-phenotype associations and supporting disease gene candidacy are presented to demonstrate the potential of this powerful resource.

Publisher

The Company of Biologists

Subject

General Biochemistry, Genetics and Molecular Biology,Immunology and Microbiology (miscellaneous),Medicine (miscellaneous),Neuroscience (miscellaneous)

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