Immune response to neutralizing epitope on human cytomegalovirus gylcoprotein B in Japanese: correlation of serologic response with HLA-type.
Antigenic domain 1 (AD-1), located between amino acids 608 and 625 of human cytomegalovirus (CMV) gB protein, is the major domain recognized by neutralizing antibodies. Amino acids 552 to 630 are essential for the binding of neutralizing antibodies. We developed an enzyme-linked immunosorbent assay (ELISA) to detect antibodies against a fusion protein containing amino acid residues 549 to 644 of the gB polypeptide and maltose binding protein (MBP). Of 180 seropositive samples, 106 (58.9%) showed positive immuno-reactivity against the fusion protein. None of the seronegative samples reacted with the fusion protein. Among 57 seropositive individuals typed for HLA, subjects with HLA-DR9 had a higher positive rate against the fusion protein (13/14=92.9%) than those without HLA-DR9 (25/43=58.1%). In addition, subjects with HLA-DR15 had a lower positive rate against the fusion protein (7/16=43.3%) than those without HLA-DR15 (31/41=75.6%). Mean OD values of HLA-DR15-positive individuals were significantly lower than those of HLA-DR15-negative individuals. Thus, among CMV-infected individuals, HLA-DR9 may be associated with responders for neutralizing antibodies and HLA-DR15 may be associated with non/low-responders.
Wada
K
K
Laboratory of Virology, Research Institute for Disease Mechanism and Control, Nagoya University School of Medicine, Aichi, Japan. PXN54733@biglobe.ne.jp
Mizuno
S
S
Ohta
H
H
Nishiyama
Y
Y
D018528:ATP-Binding Cassette Transporters; D000293:Adolescent; D000328:Adult; D000914:Antibodies, Viral / Q000097:blood*; D015153:Blotting, Western; D002352:Carrier Proteins / Q000235:genetics / Q000276:immunology; D003587:Cytomegalovirus / Q000276:immunology*; D003586:Cytomegalovirus Infections / Q000276:immunology*; D004797:Enzyme-Linked Immunosorbent Assay; D000939:Epitopes / Q000276:immunology; D004926:Escherichia coli / Q000235:genetics; D029968:Escherichia coli Proteins; D015870:Gene Expression; D006680:HLA Antigens; D006684:HLA-DR Antigens; D006801:Humans; D007564:Japan; D058619:Maltose-Binding Proteins; D008875:Middle Aged; D009004:Monosaccharide Transport Proteins; D009500:Neutralization Tests; D010446:Peptide Fragments / Q000032:analysis / Q000737:chemistry / Q000276:immunology; D011993:Recombinant Fusion Proteins / Q000276:immunology; D012703:Serotyping; D014759:Viral Envelope Proteins / Q000032:analysis / Q000097:blood / Q000276:immunology*
D018528:ATP-Binding Cassette Transporters; D000914:Antibodies, Viral; D002352:Carrier Proteins; D000939:Epitopes; D029968:Escherichia coli Proteins; D006680:HLA Antigens; D006684:HLA-DR Antigens; D058619:Maltose-Binding Proteins; D009004:Monosaccharide Transport Proteins; D010446:Peptide Fragments; D011993:Recombinant Fusion Proteins; D014759:Viral Envelope Proteins; C040495:glycoprotein B, Simplexvirus; C461599:maltose transport system, E coli