Predominant Role of T Cell Receptor (TCR)-α Chain in Forming Preimmune TCR Repertoire Revealed by Clonal TCR Reconstitution System
Predominant Role of T Cell Receptor (TCR)-α Chain in Forming Preimmune TCR Repertoire Revealed by Clonal TCR Reconstitution System
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克隆 TCR 重建系统揭示 T 细胞受体 (TCR)-α 链在形成免疫前 TCR 库中的主要作用
DOI:
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发表时间:
2002
影响因子:
15.3
通讯作者:
T. Saito
中科院分区:
文献类型:
--
作者:
T. Yokosuka;K. Takase;Misao Suzuki;Y. Nakagawa;S. Taki;Hidemi Takahashi;T. Fujisawa;H. Arase;T. Saito
The CDR3 regions of T cell receptor (TCR)-α and -β chains play central roles in the recognition of antigen (Ag)-MHC complex. TCR repertoire is created on the basis of Ag recognition specificity by CDR3s. To analyze the potential spectrum of TCR-α and -β to exhibit Ag specificity and generate TCR repertoire, we established hundreds of TCR transfectants bearing a single TCR-α or -β chain derived from a cytotoxic T cell (CTL) clone, RT-1, specific for HIVgp160 peptide, and randomly picked up TCR-β or -α chains. Surprisingly, one-third of such TCR-β containing random CDR3β from naive T cells of normal mice could reconstitute the antigen-reactive TCR coupling with RT-1 TCR-α. A similar dominant function of TCR-α in forming Ag-specific TCR, though low-frequency, was obtained for lymphocytic choriomeningitis virus–specific TCR. Subsequently, we generated TCR-α and/or -β transgenic (Tg) mice specific for HIVgp160 peptide, and analyzed the TCR repertoire of Ag-specific CTLs. Similar to the results from TCR reconstitution, TCR-α Tg generated CTLs with heterogeneous TCR-β, whereas TCR-β Tg-induced CTLs bearing a single TCR-α. These findings of Ag recognition with minimum involvement of CDR3β expand our understanding regarding the flexibility of the spectrum of TCR and suggest a predominant role of TCR-α chain in determining the preimmune repertoire of Ag-specific TCR.
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DOI:
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发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Blackwell,TK;Alt,FW
通讯作者:
Alt,FW
DOI:
--
发表时间:
1996
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Hsu,BL;Donermeyer,DL;Allen,PM
通讯作者:
Allen,PM
影响因子:
32.4
作者:
Ding, YH;Baker, BM;Wiley, DC
通讯作者:
Wiley, DC
DOI:
--
发表时间:
1994
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Dillon,SR;Jameson,SC;Fink,PJ
通讯作者:
Fink,PJ
影响因子:
56.9
作者:
Garcia, KC;Degano, M;Wilson, IA
通讯作者:
Wilson, IA