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Open Access Research

Development of a 950-gene DNA array for examining gene expression patterns in mouse testis

John C Rockett1*, J Christopher Luft1, J Brian Garges1, Stephen A Krawetz23, Mark R Hughes23, Kwan Hee Kirn4, Asa J Oudes4 and David J Dix1

Author Affiliations

1 Reproductive Toxicology Division, National Health and Environmental Effects Research Laboratory, United States Environmental Protection Agency, Research Triangle Park, NC 27711, USA

2 Center for Molecular Medicine and Genetics

3 Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI 48201, USA

4 School of Molecular Biosciences, Washington State University, Pullman, WA 99164-4234, USA

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Genome Biology 2001, 2:research0014-research0014.9  doi:10.1186/gb-2001-2-4-research0014

Published: 22 March 2001

Abstract

Background

Over the past five years, interest in and use of DNA array technology has increased dramatically, and there has been a surge in demand for different types of arrays. Although manufacturers offer a number of pre-made arrays, these are generally of utilitarian design and often cannot accommodate the specific requirements of focused research, such as a particular set of genes from a particular tissue. We found that suppliers did not provide an array to suit our particular interest in testicular toxicology, and therefore elected to design and produce our own.

Results

We describe the procedures used by members of the US Environmental Protection Agency MicroArray Consortium (EPAMAC) to produce a mouse testis expression array on both filter and glass-slide formats. The approaches used in the selection and assembly of a pertinent, nonredundant list of testis-expressed genes are detailed. Hybridization of the filter arrays with normal and bromochloroacetic acid-treated mouse testicular RNAs demonstrated that all the selected genes on the array were expressed in mouse testes.

Conclusion

We have assembled two lists of mouse (950) and human (960) genes expressed in the mouse and/or human adult testis, essentially all of which are available as sequence-verified clones from public sources. Of these, 764 are homologous and will therefore enable close comparison of gene expression between murine models and human clinical testicular samples.