title: Strong antibody reaction against glycosphingolipids injected in liposome-embedded forms in beta3GN-T5 knockout mice.
abstract: It is known that mutant mice of the beta-1,3-N-acetylglucosaminyltransferase gene (beta3Gn-T5) respond well to T-cell dependent and independent antigens. Here, we examined the effectiveness of anti-ganglioside antibody generation by immunization of beta3Gn-T5 mutant mice with liposome-embedded glycosphingolipids such as GD1a and GT1b. Consequently, the mutant mice showed a more efficient generation of anti-GD1a or anti-GT1b antibodies than wild-type mice in an enzyme-linked immunosorbent assay using sera during immunization. Thus, the beta3Gn-T5 deficient mutant mice proved more responsive than wild-type mice to not only protein antigens, but also to carbohydrates in glycolipids. Furthermore, about 50% of monoclonal antibodies generated using splenocytes of the immunized mutant mice were of the IgG class. Besides general high responsiveness to proteins and glycolipids, it could be expected that the mutant mice of beta3Gn-T5 would be useful in the generation of monoclonal antibodies towards lacto-/neolacto-series glycolipids, since these mutants lack lacto-/neolacto-series glycolipids. In fact, they showed a good serum response in immuno-fluorescence assay with cultured living cells when immunized by glycolipids extracted from ovarian cancer cell lines. These results suggested that beta3Gn-T5 mutant mice are useful for the generation of anti-glycolipid antigens with lacto-/neolacto-core structures expressed in cancer cells.
authors.affiliation: Department of Biochemistry II, Nagoya University Graduate School of Medicine, Showa-ku, Nagoya, Japan.
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Fan
authors.forename: Yuji
authors.initials: Y
authors.lastname: Kondo
authors.forename: Noriyo
authors.initials: N
authors.lastname: Tokuda
authors.forename: Yuhsuke
authors.initials: Y
authors.lastname: Ohmi
authors.forename: Reiko
authors.initials: R
authors.lastname: Ando
authors.forename: Tomokazu
authors.initials: T
authors.lastname: Umezu
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhang
authors.forename: Keiko
authors.initials: K
authors.lastname: Furukawa
authors.forename: Kiyosumi
authors.initials: K
authors.lastname: Shibata
authors.forename: Akira
authors.initials: A
authors.lastname: Togayachi
authors.forename: Hisashi
authors.initials: H
authors.lastname: Narimatsu
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Okajima
authors.forename: Koji
authors.initials: K
authors.lastname: Kikkawa
authors.forename: Koichi
authors.initials: K
authors.lastname: Furukawa
mesh_terms: D000818:Animals; D000911:Antibodies, Monoclonal / Q000096:biosynthesis*; D045744:Cell Line, Tumor; D005260:Female; D006028:Glycosphingolipids / Q000276:immunology*; D006801:Humans; D007114:Immunization; D007074:Immunoglobulin G / Q000096:biosynthesis; D051379:Mice; D008810:Mice, Inbred C57BL; D017351:N-Acetylglucosaminyltransferases / Q000235:genetics / Q000502:physiology*
chemical_list: D000911:Antibodies, Monoclonal; D006028:Glycosphingolipids; D007074:Immunoglobulin G; D017351:N-Acetylglucosaminyltransferases