Medical College of Wisconsin
CTSICores SearchResearch InformaticsREDCap

Antibody recognition of an immunogenic influenza hemagglutinin-human leukocyte antigen class II complex. J Exp Med 1991 Jul 01;174(1):243-51



Pubmed ID


Pubmed Central ID




Scopus ID

2-s2.0-0025760579 (requires institutional sign-in at Scopus site)   18 Citations


The A/Japan/57 influenza hemagglutin (HA) peptide HA 128-145, when bound by human histocompatibility leukocyte antigen-DRw11 cells, is recognized by the human CD4+ T cell clone V1. A rabbit antiserum has been raised against HA 128-145 which recognizes not only the free peptide, but also the HA 128-145/DRw11 complex on a solid matrix, in solution, or on the surface of viable cells. The detection of these complexes on viable cells was shown to be class II specific, DRw11 restricted, and commensurate with the level of DRw11 expression. The identity of DRw11 as the cell surface molecule binding HA 128-145 was confirmed by immunoprecipitation, sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and tryptic peptide mapping. Using this antiserum HA 128-145/DRw11 complexes could be detected on the cell surface as soon as 30 min after the peptide was added, and increased up to 24 h. Dissociation kinetics showed these complexes were long-lived, with a half-life of approximately 14 h. This anti-HA peptide antiserum represents the first direct means of studying antigenic peptide-human leukocyte antigen class II complexes on the surface of living cells without the addition of a non-amino acid moiety to the peptide. The properties of this antiserum thus provide the potential to study naturally processed antigenic peptides as well as the mechanism of processing itself in a physiologically relevant system.

Author List

Nygard NR, Bono C, Brown LR, Gorka J, Giacoletto KS, Schaiff WT, Graham MB, McCourt DW, Kabeer M, Braciale VL


Mary Beth Graham MD Associate Chief, Professor in the Medicine department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Amino Acid Sequence
Antibodies, Monoclonal
Antigen-Antibody Complex
CD4 Antigens
Cell Line
Clone Cells
Cytotoxicity, Immunologic
Enzyme-Linked Immunosorbent Assay
Flow Cytometry
HLA-DR Antigens
HLA-DR Serological Subtypes
Hemagglutinin Glycoproteins, Influenza Virus
Hemagglutinins, Viral
Immune Sera
Influenza A virus
Macromolecular Substances
Molecular Sequence Data