[Monoclonal antibodies to natural human gamma-type interferon]

Nine hybridomas producing monoclonal antibodies (MCA) to natural human gamma interferon (IF-gamma) were generated. BALB/c mice were immunized with nonpurified IF-gamma preparation synthesized by lymphoid cells of the peripheral blood of donors in response to induction with staphylococcal enterotoxin A. For the first time somatic hybridization was done with the use of a medium with a high content of HEPES which maintained hybridomas viable for a long period of time. Out of 9 hybridomas, two (-gamma 6.1 and gamma-8.1) were shown to produce MCA with a high binding activity in the enzyme immunoassay. The same MCA effectively neutralized the biological activity of natural IF-gamma.