A unique murine monoclonal antibody recognizing HLA-B53, B37, B51, B52, +/-B44.
Hum Immunol
; 62(7): 732-8, 2001 Jul.
Article
in En
| MEDLINE
| ID: mdl-11423180
ABSTRACT
Monoclonal antibodies have played an important role in studying the biochemistry of the HLA-Class I molecules. Some murine anti-HLA mAbs can identify configurations of HLA epitopes that have never been reported in human allosera. One of these configurations is identified by an IgM mAb designated as BHA-1441. This antibody was produced using a lymphoblastoid cell line typed as A*02, A*25; B*38, B*4402/4405; C*0501, C*07, BW4, as the immunogen. A lymphocytotoxicity test of this mAb over a panel of 109 frozen, 452 fresh and, later, 44 DNA typed T cells revealed its specificity as B53, 37, 51, 52, +/- 44. All of the antigens recognized by this mAb share the Bw4 motif at positions 81-83, except for the HLA-B37, which shares only 82L and 83R. Furthermore, while B37 and B44 cross-react due to the aspartic acid (D) substitution at position 156, the reactivity with B53, B5 (51,52), B37 and 60% of B44 cells, makes it unlikely that the target epitope could be due only to the primary amino-acid sequence. The antibody-binding site might involve changes in tertiary structure and peptides bound by the MHC. BHA-1441 is an interesting tool to study and type the HLA-B53 antigen and its cross-reactive epitopes.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
HLA-B Antigens
/
HLA Antigens
/
Antibodies, Monoclonal
Limits:
Animals
/
Female
/
Humans
Language:
En
Journal:
Hum Immunol
Year:
2001
Document type:
Article
Affiliation country:
Estados Unidos