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. 1991 Dec;74(4):578–582.

Qa-1/Tla region alloantigen-specific CTL with alpha beta receptor.

S Germana 1, N Shinohara 1
PMCID: PMC1384763  PMID: 1838350

Abstract

Recent studies involving T cells that express gamma delta T-cell receptor (gamma delta TcR) have raised the possibility that Qa-1/Tla region class I major histocompatibility complex (MHC)-like molecules are antigen-presenting molecules for gamma delta TcR. In this report, cytotoxic T lymphocyte (CTL) clones specific for a Qa-1/Tla region gene product were isolated from a bulk B10. QBR (Kb, Ib, Dq Qa-1/Tlab) anti-B10.MBR (Kb, Ik, Dq, Qa/Tlaa) CTL line. These CTL lysed blasts from all Qa-1a strains regardless of the H-2 haplotype, indicating that the recognition of the Qa-1 antigen by these CTL is not restricted by other class I molecules. In bulk populations, CTL activity of this specificity was found only in the CD8+CD4- subpopulation. Accordingly, all established CTL clones were phenotyped as Thy-1+, CD8+CD4-. Furthermore, these clones were shown to express alpha beta TcR rather than gamma delta TcR. Thus, the results indicate that Qa-1 antigen can be recognized by alpha beta TcR T cells in a manner similar to recognition of classical class I molecules.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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