Cloning of the rat IL-5Ralpha gene: analysis of 5'-upstream region and expression by B cells

Biochemical and Biophysical Research Communications
C PierrotJ Khalife

Abstract

Although rats are widely used for the analysis of allergic reactions and parasitic infections where IL-5 is involved, nothing is currently known of the expression of IL-5 receptor in this species. In this study, the cDNA sequence, genomic structure and the transcriptional regulation of the rat IL-5Ralpha were analyzed. The rat IL-5Ralpha gene, which we localized to chromosome 4q34-q41, spans more than 25 kb and consists of 12 exons. Promoter activity was seen in different cell lines and analysis by deletion experiments allowed to identify two negative regulatory regions which did not differ when tested either with IL-5Ralpha-negative or positive cells. Finally, the investigation of the expression of IL-5Ralpha showed that it is expressed in lung, spleen, liver, and purified rat B cells from normal rat. This can provide an explanation for the role of rat IL-5 as B-cell growth factor and a relevant model in order to better understand the activity of IL-5 on human B cells.

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Citations

Mar 13, 2008·Environmental Health Perspectives·Becky J ProskocilAllison D Fryer
Apr 22, 2015·American Journal of Respiratory Cell and Molecular Biology·Becky J ProskocilAllison D Fryer
Jun 29, 2018·American Journal of Physiology. Lung Cellular and Molecular Physiology·Frances C ShaffoPamela J Lein

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