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The Journal of Immunology, Vol 143, Issue 2 507-512, Copyright © 1989 by American Association of Immunologists

ARTICLES

Antibodies against a peptide representative of a conserved region of human IFN-alpha. Differential effects on the antiviral and antiproliferative effects of IFN

I Barasoain, A Portoles, JF Aramburu and JM Rojo
Department of Immunology, Centro de Investigaciones Biologicas, Madrid, Spain.

mAb generated from mice immunized with a synthetic peptide representative of a conserved region (amino acids 133 to 147) of human IFN-alpha are described. Antisera from mice immunized with the peptide coupled to keyhole limpet hemocyanin were able to specifically bind to the peptide and also to bind and precipitate human IFN-alpha. Binding of the antibodies to IFN-alpha was inhibited by the immunizing peptide, but not by an unrelated peptide. Immunized mice were used to obtain three hybridomas producing mAb able to recognize both the immunizing peptide and human IFN-alpha, as determined by RIA and immunoprecipitation. These antibodies also neutralized the antiviral effect of human leukocyte IFN. In contrast, none of the mAb significantly affected the inhibition of Daudi cell proliferation induced by IFN-alpha.


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