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T-cell receptor isoforms and signal transduction.
S Koyasu1, L D'Adamio, L K Clayton
1Laboratory of Immunobiology, Dana-Farber Cancer Institute, Boston, Massachusetts 02115.
Current Opinion in Immunology
|February 1, 1991
Summary
Researchers identified CD3 eta, an alternative splice product of the CD3 zeta gene. This discovery reveals three distinct T-cell receptor isoforms, impacting T-cell signaling.
Area of Science:
- Immunology
- Molecular Biology
- Cell Signaling
Background:
- The T-cell receptor (TCR) complex is crucial for adaptive immunity.
- CD3 zeta is a known signaling component of the TCR.
- Alternative splicing is a mechanism for generating protein diversity.
Purpose of the Study:
- To report the identification of CD3 eta.
- To discuss the implications of CD3 eta as an alternatively spliced product.
- To review the signal transduction roles of identified TCR isoforms.
Main Methods:
- cDNA cloning
- Genomic cloning
- Literature review of signal transduction
Main Results:
- CD3 eta has been identified as an alternatively spliced product.
- The gene locus encoding CD3 zeta also encodes CD3 eta.
- Three distinct T-cell receptor isoforms are now recognized.
Conclusions:
- The identification of CD3 eta expands the repertoire of TCR signaling molecules.
- Understanding these isoforms is key to comprehending T-cell activation.
- This work provides a current perspective on TCR signal transduction.