Related Experiment Videos
A new mouse T-cell receptor alpha chain variable region family
R M Sutherland1, Y Paterson, P A Scherle
1Department of Microbiology, University of Pennsylvania, Philadelphia 19104.
Immunogenetics
|January 1, 1991
Summary
Researchers discovered a new T-cell receptor alpha chain gene family, V alpha 15, crucial for immune responses. This family, containing two conserved members, was identified through analysis of influenza and hemin chloride reactive T-cells.
Area of Science:
- Immunology
- Molecular Biology
- Genetics
Background:
- T-cell receptors (TCRs) are critical for adaptive immunity, mediating antigen recognition.
- The diversity of TCR alpha chain variable (V alpha) gene families contributes to the repertoire of T-cell responses.
- Previous studies have identified several V alpha gene families, but the full extent of TCR alpha chain diversity remains under investigation.
Purpose of the Study:
- To identify and characterize novel T-cell receptor alpha chain variable (V alpha) gene families.
- To investigate the genetic organization and conservation of newly identified V alpha genes across different mouse strains.
Main Methods:
- Sequence analysis of rearranged T-cell receptor alpha chain gene segments from specific T-cell clones and hybrids.
- Southern hybridization analysis to determine the number of gene family members and their conservation.
Main Results:
- Identification of a previously undescribed V alpha gene family, designated V alpha 15.
- Southern hybridization suggests V alpha 15 contains approximately two members.
- These V alpha 15 genes are conserved across six mouse strains representing three known V alpha haplotypes (V alpha a, V alpha b, and V alpha c).
Conclusions:
- The discovery of the V alpha 15 gene family expands the known repertoire of TCR alpha chain genes.
- The conservation of V alpha 15 genes across different mouse strains suggests their functional importance in T-cell responses.
- Further studies are warranted to elucidate the specific role of V alpha 15 in immune recognition, including responses to influenza and hemin chloride.