Development of a macroarray to specifically analyze immunological gene expression in swine

Clinical and Diagnostic Laboratory Immunology
Terence N LedgerIsabelle P Oswald

Abstract

DNA arrays are useful tools for simultaneously studying the expressions of a large number of genes. Herein, we describe the construction and the optimization of conditions for a low-density DNA macroarray specific for the porcine immune system. This specific DNA macroarray contains 63 gene products, including 20 cytokines, 11 chemokines, and 12 immunologically relevant receptors. It was constructed by designing gene-specific oligonucleotide primers from porcine sequences available in the EMBL or TIGR expressed sequence tag data bank and using primers from conserved regions of aligned sequences from other species for sequences unavailable for swine. Amplicons produced by reverse transcription-PCR were cloned, sequenced, and spotted onto nylon filters. A trial DNA array was first produced to optimize the intensity, specificity, and variability of signals from amplicons amplified with either gene-specific or universal primers. The DNA macroarray was then validated by comparing the gene expression profile of nonstimulated peripheral blood mononuclear cells (PBMCs) to that of phorbol 12-myristate 13-acetate and ionomycin (PMA-Iono)-stimulated PBMCs from three different animals over a 48-h time period. As already described for more c...Continue Reading

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Jul 18, 2006·Mammalian Genome : Official Journal of the International Mammalian Genome Society·Shu-Hong ZhaoChristopher K Tuggle
Mar 27, 2007·International Journal of Biological Sciences·Christopher K TuggleOliver Couture
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