STUDIES ON THE HUMAN T-CELL RECEPTOR ALPHA/BETA VARIABLE REGION GENES .2. IDENTIFICATION OF 4 ADDITIONAL V-BETA SUBFAMILIES

被引:178
作者
FERRADINI, L [1 ]
ROMANROMAN, S [1 ]
AZOCAR, J [1 ]
MICHALAKI, H [1 ]
TRIEBEL, F [1 ]
HERCEND, T [1 ]
机构
[1] INST GUSTAVE ROUSSY, INSERM,U333,HEMATOIMMUNOL LAB, 39 RUE CAMILLE DESMOULINS, F-94805 VILLEJUIF, FRANCE
关键词
D O I
10.1002/eji.1830210412
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
The human T cell receptor (TcR) beta chain gene segment diversity has been studied using the anchored-polymerase chain reaction. Three hundred and fifty C-beta-specific transcripts derived from peripheral lymphocytes were analyzed. Transcripts including V-D-beta-1-J-beta-2-C2 sequences were found with a high frequency (> 10%), suggesting that "illegitimate" joinings may constitute a cis-complementing rearrangement mechanism capable of substantially increasing the TcR beta chain combinatorial diversity. Twelve previously undescribed V-beta gene segments have been identified. Five of them delineate four novel V-beta subfamilies (V-beta-w21: two members, V-beta-w22, 23, 24: one member) which all have a murine homologue. The additional seven gene segments belong to the V-beta-5, V-beta-6, V-beta-12 and V-beta-13 subfamilies. In addition, the sequences of two known V-beta-7 and V-beta-9 gene segments have been extended. Together, the present data support the view that the contribution of the beta chain combinatorial diversity to the TcR alpha/beta variability has not yet been fully appreciated.
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页码:935 / 942
页数:8
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