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Reconstitution of Ir Genes, Ia Antigens, and Mixed Lymphocyte Reaction Determinants by Gene Complementation

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Specialty Science
Date 1981 Mar 1
PMID 6165020
Citations 25
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Abstract

By using clones of murine T cells reactive with alloantigens as well as soluble antigens, it has been possible to demonstrate that Ia antigens, Ir gene phenomena (defined as the ability of immune T cells to recognize antigen), and mixed lymphocyte reaction (MLR)-stimulating determinants encoded within the I-A subregion are different manifestations associated with same product. These studies utilized the I-Ab mutant mouse B6.C-H-2bm (bm12), whose defect in the normal expression of the cell surface products of the I-Ab subregion can be partially circumvented through trans-complementation by deriving hybrids between bm12 and mice expressing normal I-A subregion products. Such mice [e.g., (bm12 X B10.A)F1] express several serologically normal I-Ab products but have defects in certain I-A subregion gene products normally expressed on cells of H-2a X H-2b heterozygote mice that are used as restricting elements for antigen recognition by antigen-reactive T cell clones or recognized as alloantigens by alloreactive T cell clones. This defect in cell surface expression of certain normal I-Ab products on the mutant bm12 cells has allowed us to suggest that there exist trans-complementing products on H-2a X H-2b heterozygote mice consisting of Ab alpha Ak beta and Ak alpha Ab beta that restrict antigen recognition by cloned T cells, stimulate MLR responses by cloned T cells, and react with certain anti-Ia antisera.

Citing Articles

Gain/loss of poly(Glu50Tyr50)/poly(Glu60Ala30Tyr10) responsiveness in the bm12 mutant strain.

Lei H, Melvold R, Miller S, Waltenbaugh C J Exp Med. 1982; 156(2):596-609.

PMID: 7047670 PMC: 2186774. DOI: 10.1084/jem.156.2.596.


Selective loss of antigen-specific Ir gene function in IA mutant B6.C-H-2bm12 is an antigen presenting cell defect.

Lin C, Rosenthal A, Passmore H, Hansen T Proc Natl Acad Sci U S A. 1981; 78(10):6406-10.

PMID: 7031650 PMC: 349048. DOI: 10.1073/pnas.78.10.6406.


Cell-mediated cytotoxicity to non-MHC alloantigens on mouse epidermal cells. VI. Influence of the MHC on the tissue specificity of cytotoxic T-lymphocyte responses.

TYLER J, Burlingham W, David C, Steinmuller D Immunogenetics. 1982; 16(1):23-36.

PMID: 6981598 DOI: 10.1007/BF00364439.


Murine T cell-specific Ia antigens: monoclonal antibodies define an I-A-encoded T lymphocyte structure.

Hayes C, Hullett D Proc Natl Acad Sci U S A. 1982; 79(11):3594-8.

PMID: 6980412 PMC: 346469. DOI: 10.1073/pnas.79.11.3594.


Tryptic peptide comparison of Ia antigen alpha and beta polypeptides from the I-A mutant B6.C-H-2bm12 and its congenic parental strain B6.

McKean D, Melvold R, David C Immunogenetics. 1981; 14(1-2):41-51.

PMID: 6948771 DOI: 10.1007/BF00344298.


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