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. 1993 Apr 30;192(2):452-8.
doi: 10.1006/bbrc.1993.1436.

Molecular cloning of rat cytokine synthesis inhibitory factor (IL-10) cDNA and expression in spleen and macrophages

L Feng  1 , W W Tang, J C Chang, C B Wilson
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Molecular cloning of rat cytokine synthesis inhibitory factor (IL-10) cDNA and expression in spleen and macrophages

L Feng et al. Biochem Biophys Res Commun. .

Abstract

Rat cytokine synthesis inhibitory factor (IL-10) was cloned. Like mouse and human IL-10 (mIL-10, hIL-10), rat IL-10 exhibits strong DNA and amino acid sequence homology to the open reading frame in the Epstein-Barr virus, BCRFI. The supernatant of COS-7 transfectants with rat IL-10 was found to inhibit the production of IFN-gamma by murine Th1 cells. A probe from the rat IL-10 was used in an RNase protection assay to demonstrate that IL-10 was expressed in LPS-stimulated rat spleen and FACS-purified OX-42-reactive peritoneal macrophages. The production of IL-10 by macrophages, as shown in the current study, suggests that IL-10 may have an autocrine function in inflammation.

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