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Identification of putative human T cell receptor delta complementary DNA clones
S Hata1, M B Brenner, M S Krangel
1Division of Tumor Virology, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115.
Science (New York, N.Y.)
|October 30, 1987
Summary
Researchers identified a novel T cell receptor (TCR) delta subunit in human T lymphocytes. This discovery provides crucial insights into the structure and function of gamma delta T cell receptors.
Area of Science:
- Immunology
- Molecular Biology
- Genetics
Background:
- A subpopulation of human T lymphocytes expresses a novel T cell receptor (TCR) delta subunit alongside TCR gamma and CD3 polypeptides.
- Understanding the molecular basis of this unique T cell population is essential for advancing immunology.
Purpose of the Study:
- To identify and characterize complementary DNA (cDNA) clones encoding the novel TCR delta subunit.
- To confirm the role of these clones in gamma delta T cells.
Main Methods:
- Screening of a human TCR gamma delta T cell cDNA library.
- Characterization of cross-hybridizing cDNA clones.
- Analysis of gene rearrangement and transcript expression patterns.
Main Results:
- Identified cDNA clones expressing transcripts exclusively in gamma delta T lymphocytes.
- Demonstrated gene rearrangement in gamma delta T lymphocytes and deletion in other T lymphocytes.
- Sequence analysis revealed homology to variable, joining, and constant elements of TCR and immunoglobulin genes.
Conclusions:
- The characterized cDNA clones provide strong evidence for encoding the novel TCR delta subunit.
- This finding elucidates a key component of the gamma delta T cell receptor complex.
- Further research can build upon this discovery to explore gamma delta T cell functions.