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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Non random usage of T cell receptor alpha gene expression in atopy using anchored PCR.

The T cell receptor (TCR) alpha beta heterodimer recognises antigenic peptide fragments presented by Class II MHC. This interaction initiates T cell activation and cytokine release with subsequent recruitment of inflammatory cells. Previous work from our group suggests a qualitative difference in variable alpha gene expression in atopy as compared to non atopic controls. In this study we examine TCR alpha repertoire using anchored PCR to provide a quantitative assessment of the V alpha and J alpha repertoire. One atopic (DRB1*0701,DRB1*15: DRB4*0101, DRB5*01: DQB1* 0303, DQB1*601/2) and one non-atopic (DRB1*0701,DRB1*03011/2: DRB4*01, DRB3*0x: DQB1* 0303, DQB1*0201/2) control were studied. Variable gene usage was markedly limited in the atopic individual. V alpha 1, 3, 8 accounted for 60% and J alpha 12, 31 30% of the gene usage. There was evidence of preferential V alpha-J alpha gene pairing and clonal expansion. We conclude that there is a marked non random TCR alpha gene distribution in atopy using both V alpha family and anchored PCR. This may be due in part to antigen driven clonal expansion.[1]

References

  1. Non random usage of T cell receptor alpha gene expression in atopy using anchored PCR. Mansur, A.H., Gelder, C.M., Holland, D., Campell, D.A., Griffin, A., Cunliffe, W., Markham, A.F., Morrison, J.F. Adv. Exp. Med. Biol. (1996) [Pubmed]
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