A third class I major histocompatibility complex antigen encoded by a gene in the D region of the H-2d haplotype recognized by cytotoxic T lymphocytes

Donald W. Mann, James Forman

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6 Citations (Scopus)

Abstract

The D region of the H-2d haplotype contains five class I genes: H-2Dd, D2d, D3d, D4d and H-2Ld. Although previous studies have suggested the presence of D-end encoded class I molecules in addition to H-2Dd and H-2Ld, segregation of genes encoding such molecules has not been demonstrated. In this report we have used cãtotoxic T lymphocytes (CTL) to examine the D region of the H-2d haplotype for the presence of additional class I molecules. CTL generated in (C3H × B6.K1)F1 (KkDk, KbDb) mice against the hybrid class I gene product Q10d/Ld expressed on L cells cross-react with H-2Ld but not H-2Dd molecules, as determined by lysis of transfected cells expressing H-2Ld but not H-2Dd. Although H-2Ld-specific monoclonal antibodies (mAb) completely inhibit H-2Ld-specific CTL from killing B10.A(3R) (KbDdLd) target cells, only partial inhibition of anti-Q10 CTL-mediated lysis was observed, suggesting the presence of an additional D-end molecule as a target for these latter CTL. To identify the region containing the gene encoding the Q10 cross-reactive molecule, we show that anti-Q10 CTL lyse target cells from a D-region recombinant strain B10.RQDB, which has H-2Dd, D2d, D3d, D4d, and H-2Db but not the H-2LdH-2d, and H-2Ld (including D2d, D3d, and D4d, lacks this anti-Q10 CTL target molecule. Together, these data demonstrate that a class I gene mapping between H-2Dd and H-2Ld encodes an antigen recognozed by anti-Q10 CTL. A likely candidate for this gene is D2d, D3d or D4d.

Original languageEnglish (US)
Pages (from-to)38-45
Number of pages8
JournalImmunogenetics
Volume28
Issue number1
DOIs
StatePublished - Jul 1 1988

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Histocompatibility Antigens Class I
Cytotoxic T-Lymphocytes
Major Histocompatibility Complex
Haplotypes
T-Lymphocytes
MHC Class I Genes
Genes
Chromosome Mapping
Monoclonal Antibodies
Antigens

ASJC Scopus subject areas

  • Immunology
  • Genetics

Cite this

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title = "A third class I major histocompatibility complex antigen encoded by a gene in the D region of the H-2d haplotype recognized by cytotoxic T lymphocytes",
abstract = "The D region of the H-2d haplotype contains five class I genes: H-2Dd, D2d, D3d, D4d and H-2Ld. Although previous studies have suggested the presence of D-end encoded class I molecules in addition to H-2Dd and H-2Ld, segregation of genes encoding such molecules has not been demonstrated. In this report we have used c{\~a}totoxic T lymphocytes (CTL) to examine the D region of the H-2d haplotype for the presence of additional class I molecules. CTL generated in (C3H × B6.K1)F1 (KkDk, KbDb) mice against the hybrid class I gene product Q10d/Ld expressed on L cells cross-react with H-2Ld but not H-2Dd molecules, as determined by lysis of transfected cells expressing H-2Ld but not H-2Dd. Although H-2Ld-specific monoclonal antibodies (mAb) completely inhibit H-2Ld-specific CTL from killing B10.A(3R) (KbDdLd) target cells, only partial inhibition of anti-Q10 CTL-mediated lysis was observed, suggesting the presence of an additional D-end molecule as a target for these latter CTL. To identify the region containing the gene encoding the Q10 cross-reactive molecule, we show that anti-Q10 CTL lyse target cells from a D-region recombinant strain B10.RQDB, which has H-2Dd, D2d, D3d, D4d, and H-2Db but not the H-2LdH-2d, and H-2Ld (including D2d, D3d, and D4d, lacks this anti-Q10 CTL target molecule. Together, these data demonstrate that a class I gene mapping between H-2Dd and H-2Ld encodes an antigen recognozed by anti-Q10 CTL. A likely candidate for this gene is D2d, D3d or D4d.",
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N2 - The D region of the H-2d haplotype contains five class I genes: H-2Dd, D2d, D3d, D4d and H-2Ld. Although previous studies have suggested the presence of D-end encoded class I molecules in addition to H-2Dd and H-2Ld, segregation of genes encoding such molecules has not been demonstrated. In this report we have used cãtotoxic T lymphocytes (CTL) to examine the D region of the H-2d haplotype for the presence of additional class I molecules. CTL generated in (C3H × B6.K1)F1 (KkDk, KbDb) mice against the hybrid class I gene product Q10d/Ld expressed on L cells cross-react with H-2Ld but not H-2Dd molecules, as determined by lysis of transfected cells expressing H-2Ld but not H-2Dd. Although H-2Ld-specific monoclonal antibodies (mAb) completely inhibit H-2Ld-specific CTL from killing B10.A(3R) (KbDdLd) target cells, only partial inhibition of anti-Q10 CTL-mediated lysis was observed, suggesting the presence of an additional D-end molecule as a target for these latter CTL. To identify the region containing the gene encoding the Q10 cross-reactive molecule, we show that anti-Q10 CTL lyse target cells from a D-region recombinant strain B10.RQDB, which has H-2Dd, D2d, D3d, D4d, and H-2Db but not the H-2LdH-2d, and H-2Ld (including D2d, D3d, and D4d, lacks this anti-Q10 CTL target molecule. Together, these data demonstrate that a class I gene mapping between H-2Dd and H-2Ld encodes an antigen recognozed by anti-Q10 CTL. A likely candidate for this gene is D2d, D3d or D4d.

AB - The D region of the H-2d haplotype contains five class I genes: H-2Dd, D2d, D3d, D4d and H-2Ld. Although previous studies have suggested the presence of D-end encoded class I molecules in addition to H-2Dd and H-2Ld, segregation of genes encoding such molecules has not been demonstrated. In this report we have used cãtotoxic T lymphocytes (CTL) to examine the D region of the H-2d haplotype for the presence of additional class I molecules. CTL generated in (C3H × B6.K1)F1 (KkDk, KbDb) mice against the hybrid class I gene product Q10d/Ld expressed on L cells cross-react with H-2Ld but not H-2Dd molecules, as determined by lysis of transfected cells expressing H-2Ld but not H-2Dd. Although H-2Ld-specific monoclonal antibodies (mAb) completely inhibit H-2Ld-specific CTL from killing B10.A(3R) (KbDdLd) target cells, only partial inhibition of anti-Q10 CTL-mediated lysis was observed, suggesting the presence of an additional D-end molecule as a target for these latter CTL. To identify the region containing the gene encoding the Q10 cross-reactive molecule, we show that anti-Q10 CTL lyse target cells from a D-region recombinant strain B10.RQDB, which has H-2Dd, D2d, D3d, D4d, and H-2Db but not the H-2LdH-2d, and H-2Ld (including D2d, D3d, and D4d, lacks this anti-Q10 CTL target molecule. Together, these data demonstrate that a class I gene mapping between H-2Dd and H-2Ld encodes an antigen recognozed by anti-Q10 CTL. A likely candidate for this gene is D2d, D3d or D4d.

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