Influence of viral superantigens on V beta- and V alpha-specific positive and negative selection

Immunol Rev. 1993 Feb;131:131-68. doi: 10.1111/j.1600-065x.1993.tb01534.x.

Abstract

In mice, V beta-specific negative selection is mediated by a number of superantigens encoded by various mouse mammary tumor viruses. We have identified Mtv-3, Mtv-27, Mtv-44, Mtv-8, Mtv-9, Mtv-11, and MMTV(D2.GD), and have confirmed Mtv-1. Although specificities of superantigens correlate well with sequences of their carboxy terminal regions, Mtv-44 appears to be an exception: the product is specific for V beta 3, V beta 6, V beta 8.1, and V beta 9. It remains to be determined whether Mtv-44 produces one or two different superantigens to exhibit this specificity. V beta 5+ T-cell deletion is induced by two groups of superantigens: V beta 3-specific superantigens encoded by Mtv-1, Mtv-3, Mtv-6, Mtv-13, Mtv-27, and Mtv-44, and V beta 11-specific superantigens encoded by Mtv-8, Mtv-9, and Mtv-11. Furthermore, these V beta 3-specific superantigens are also specific for V beta 17a(cz). In contrast, V beta-specific positive selection and V alpha-specific positive and negative selection do not seem to involve non-H-2 (super)antigens, although their involvement can not be excluded. In the near future, superantigens, powerful modulators of T-cell functions, will be exploited for clinical applications.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Amino Acid Sequence
  • Animals
  • Antibodies, Viral
  • Antigens, Viral* / genetics
  • Gene Deletion
  • Mammary Tumor Virus, Mouse / genetics
  • Mammary Tumor Virus, Mouse / immunology
  • Mice
  • Molecular Sequence Data
  • Receptors, Antigen, T-Cell, alpha-beta* / genetics
  • T-Lymphocytes / immunology

Substances

  • Antibodies, Viral
  • Antigens, Viral
  • Receptors, Antigen, T-Cell, alpha-beta