Hidden variables

Unstable Aβ chain genes encoding antigen recognition structures in tumor survivors

Yinong Liu, Douglas L. McMinimy, Alexei Y. Savinov, Kevin A. Johnson, Sergey G. Kremlev, Andrei Chapoval, Igor K. Egorov

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Novel single exon genes Aβ4-7 comprising the Aβ6 gene family have been cloned from mouse mutants surviving transplantable metastatic tumors. Their protein coding sequences are similar to H2-Ab cDNA which encodes antigen-binding molecules of antigen presenting cells (APC); their promoters and/or signal sequences are unrelated to Ab sequences but found in other eukaryotic genes. Aβ4b protein was demonstrated on macrophages and B cells that are APC. The Aβ6w302 appears to be an ancient gene ancestral to major histocompatibility complex (MHC) class II β genes. However, unlike the MHC class II, the Aβ4-7 genes are not involved in skin graft rejection. Despite inbreeding, the Aβ6w302 locus remains unfixed in several strains of mice. The number of Aβ genes and their alleles varied between individual mice; they do not map into the H2 region but appear to be scattered over the genome. The Aβ6 gene family is molecularly unstable in Aβ6w302-positive (but not in Aβ6w302-negative) mice which are somatic mosaics for these genes. Biological features of Aβ4-7 genes make them remarkably different from the classical MHC gene system. All available evidence strongly suggests that these genes control susceptibility/resistance to the spread of metastatic tumors.

Original languageEnglish (US)
Pages (from-to)1091-1110
Number of pages20
JournalMolecular Immunology
Volume37
Issue number18
DOIs
StatePublished - Jul 24 2001
Externally publishedYes

Fingerprint

Antigens
Genes
Neoplasms
Major Histocompatibility Complex
Antigen-Presenting Cells
vif Genes
MHC Class II Genes
Inbreeding
Graft Rejection
Protein Sorting Signals
Exons
Proteins
B-Lymphocytes
Complementary DNA
Alleles
Macrophages
Genome
Skin

Keywords

  • Cancer metastasis
  • Immune escape
  • Major histocompatibility complex class II genetics
  • Natural selection for heterozygosity
  • Somatic mutations

ASJC Scopus subject areas

  • Immunology
  • Molecular Biology

Cite this

Liu, Y., McMinimy, D. L., Savinov, A. Y., Johnson, K. A., Kremlev, S. G., Chapoval, A., & Egorov, I. K. (2001). Hidden variables: Unstable Aβ chain genes encoding antigen recognition structures in tumor survivors. Molecular Immunology, 37(18), 1091-1110. https://doi.org/10.1016/S0161-5890(01)00029-3

Hidden variables : Unstable Aβ chain genes encoding antigen recognition structures in tumor survivors. / Liu, Yinong; McMinimy, Douglas L.; Savinov, Alexei Y.; Johnson, Kevin A.; Kremlev, Sergey G.; Chapoval, Andrei; Egorov, Igor K.

In: Molecular Immunology, Vol. 37, No. 18, 24.07.2001, p. 1091-1110.

Research output: Contribution to journalArticle

Liu, Yinong ; McMinimy, Douglas L. ; Savinov, Alexei Y. ; Johnson, Kevin A. ; Kremlev, Sergey G. ; Chapoval, Andrei ; Egorov, Igor K. / Hidden variables : Unstable Aβ chain genes encoding antigen recognition structures in tumor survivors. In: Molecular Immunology. 2001 ; Vol. 37, No. 18. pp. 1091-1110.
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