title: IgG anti-tetanus toxoid antibody production induced by Epstein-Barr virus from B cells of human marrow transplant recipients.
abstract: This investigation shows that Epstein-Barr virus (EBV)-activated human B cells from marrow transplant recipients can produce in vitro IgG anti-tetanus toxoid antibody (anti-TT) without booster immunizations with tetanus toxoid (TT). Purified B cells (E-rosette negative) from 8 normal subjects, 6 healthy long-term marrow graft recipients, and 15 long-term marrow graft recipients with chronic graft-vs-host disease (GVHD), were stimulated for 12 days with EBV to induce anti-TT production in culture supernatants. The amount of anti-TT in culture supernatants was quantitated using a enzyme-linked immunosorbent assay. B cells from all 8 normal controls produced in vitro IgG anti-TT after EBV stimulation. Five of 6 healthy recipients had B cells that produced anti-TT after EBV stimulation. Four of 15 recipients with chronic GVHD had B cells capable of producing anti-TT after EBV stimulation. The number of cultures making anti-TT responses was less in those with chronic GVHD than in those without chronic GVHD or normal individuals (P less than 0.001). B cells from patients with chronic GVHD had fewer responses exceeding the overall median of 0.7 ng/ml when compared with the other two groups (P less than 0.03). These data show that B cells of donor origin can produce in vitro IgG anti-TT antibody to tetanus toxoid antigen in a T-independent fashion.
mesh_terms: D000293:Adolescent; D000328:Adult; D000907:Antibodies, Bacterial / Q000096:biosynthesis*; D000918:Antibody Specificity; D001402:B-Lymphocytes / Q000378:metabolism*; D016026:Bone Marrow Transplantation; D002648:Child; D002908:Chronic Disease; D000939:Epitopes / Q000276:immunology; D005260:Female; D006086:Graft vs Host Disease / Q000276:immunology; D004854:Herpesvirus 4, Human / Q000276:immunology*; D006801:Humans; D007074:Immunoglobulin G / Q000096:biosynthesis*; D008297:Male; D008875:Middle Aged; D013223:Statistics as Topic; D013745:Tetanus Toxoid / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial; D000939:Epitopes; D007074:Immunoglobulin G; D013745:Tetanus Toxoid