title: Analyzing physiological function of polypeptide GalNAcT-1-deficient mice in humoral immunity.
abstract: A family of polypeptide GalNAc transferases (ppGalNAcTs) initiates protein O-glycosylation. The ppGalNAcT gene family is large; at least 15 ppGalNAcT isozymes have been cloned so far and each of them may have important and distinctive physiologic functions. ppGalNAcT-1, which is highly expressed in many tissues and cell types, is the first member of the ppGalNAcT family to be cloned. In order to understand the physiologic role of ppGalNAcT-1, we generated and characterized mice lacking this isozyme. We found that ppGalNAcT-1 plays key roles in germinal center (GC) B lymphocyte apoptosis in the modulation of humoral immune response. In this chapter, in vitro and in vivo systems to assess the B lymphocyte function of ppGalNAcT-1-deficient mice are discussed. In addition, detailed information on the immunohistochemistry of GC is also described.
authors.affiliation: RIKEN Research Center for Allergy and Immunology, Tsurumi-ku, Yokohama City, Kanagawa, Japan.
authors.forename: Mari
authors.initials: M
authors.lastname: Tenno
mesh_terms: D000818:Animals; D017209:Apoptosis; D001402:B-Lymphocytes / Q000166:cytology / Q000276:immunology; D018858:Germinal Center / Q000276:immunology; D056724:Immunity, Humoral; D007150:Immunohistochemistry; D008213:Lymphocyte Activation; D051379:Mice; D018345:Mice, Knockout; D017350:N-Acetylgalactosaminyltransferases / Q000172:deficiency* / Q000235:genetics / Q000378:metabolism*; D000097763:Polypeptide N-acetylgalactosaminyltransferase
chemical_list: D017350:N-Acetylgalactosaminyltransferases; D000097763:Polypeptide N-acetylgalactosaminyltransferase