HLA antigen structural gene mutants selected with an allospecific monoclonal antibody.


Journal Article

The HLA-A2 antigen-specific monoclonal antibody BB7.2 and complement were used to immunoselect mutants from an ethyl methanesulfonate-mutagenized human B lymphoid cell line, T5-1. Surviving colonies were screened by radioimmune binding with BB7.2 and with a monospecific HLA-A2 alloantiserum, Stewart, and HLA antigens of selected clones were immunoprecipitated and studied by isoelectric focusing. Several classes of mutants could be distinguished: mutants that expressed no HLA-A2 heavy chain; mutants that expressed an HLA-A2 heavy chain that was unable to associate with beta 2-microglobulin (beta 2m) and was not expressed at the cell surface; mutants with reduced HLA-A2 heavy chain-beta 2m association and cell surface expression of HLA-A2 dimer with or without heavy chain charge alterations; mutants with normal HLA-A2 heavy chain-beta 2m association and normal quantitative cell surface HLA-A2 expression but with HLA-A2 heavy chain charge alterations; and mutants with as yet incompletely defined lesions. Mutants with altered cell surface HLA antigens were not found in previous selections with alloantisera and should be useful for epitope mapping and structure-function studies of HLA molecules.

Full Text

Duke Authors

Cited Authors

  • Pious, D; Krangel, MS; Dixon, LL; Parham, P; Strominger, JL

Published Date

  • December 1, 1982

Published In

Volume / Issue

  • 79 / 24

Start / End Page

  • 7832 - 7836

PubMed ID

  • 6961455

Pubmed Central ID

  • 6961455

International Standard Serial Number (ISSN)

  • 0027-8424

Digital Object Identifier (DOI)

  • 10.1073/pnas.79.24.7832


  • eng

Conference Location

  • United States