title: Characterization of anti-mouse interleukin-6 receptor antibody.
abstract: Hybridoma that produces rat anti-mouse interleukin 6 receptor (IL-6R) antibody, MR16-1, was established by the fusion of mouse P3U1 myeloma cells and spleen cells from mouse soluble IL-6R (sIL-6R)-immunized Wistar rat. In the present study, we examined the characteristics of MR16-1 in vitro and in vivo. MR16-1 bound to mouse sIL-6R dose-dependently. MR16-1 suppressed IL-6-induced proliferation of 7TD1 cells in a dose-dependent manner and this inhibitory effect was reversed by the addition of a higher concentration of IL-6. Cross-reactivity study using T cells from mouse, rat, and human revealed that MR16-1 did not cross-react with human and rat IL-6R. Binding region analysis using several human-mouse chimeric IL-6Rs showed that half of the fibronectin domain II of mouse IL-6R (amino acids 214-285) was required for MR16-1 binding. Furthermore, MR16-1 completely suppressed IL-6-induced antibody production in DNP-KLH immunized mice. These lines of evidence demonstrate that MR16-1 is useful to investigate the physiological and pathological roles of IL-6 and sIL-6R in mice.
authors.affiliation: Fuji-Gotemba Research Laboratories, Chugai Pharmaceutical Co. Ltd, 135 Komakado 1-chome, Gotemba-shi, Shizuoka 412-8513, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Okazaki
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Yamada
authors.forename: Norihiro
authors.initials: N
authors.lastname: Nishimoto
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Yoshizaki
authors.forename: Masahiko
authors.initials: M
authors.lastname: Mihara
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D000911:Antibodies, Monoclonal / Q000737:chemistry* / Q000276:immunology* / Q000494:pharmacology; D000917:Antibody Formation / Q000187:drug effects / Q000276:immunology; D000918:Antibody Specificity / Q000276:immunology*; D019556:COS Cells; D006801:Humans; D006825:Hybridomas / Q000187:drug effects / Q000276:immunology; D015850:Interleukin-6 / Q000276:immunology / Q000494:pharmacology; D051379:Mice; D008969:Molecular Sequence Data; D051381:Rats; D019947:Receptors, Interleukin-6 / Q000037:antagonists & inhibitors / Q000276:immunology*; D013045:Species Specificity
chemical_list: D000911:Antibodies, Monoclonal; D015850:Interleukin-6; D019947:Receptors, Interleukin-6