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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Sci+Rep
2016 ; 6
(ä): 23821
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CD4(+) and CD8(+) TCR? repertoires possess different potentials to generate
extraordinarily high-avidity T cells
#MMPMID27030642
Nakatsugawa M
; Rahman MA
; Yamashita Y
; Ochi T
; Wnuk P
; Tanaka S
; Chamoto K
; Kagoya Y
; Saso K
; Guo T
; Anczurowski M
; Butler MO
; Hirano N
Sci Rep
2016[Mar]; 6
(ä): 23821
PMID27030642
show ga
Recent high throughput sequencing analysis has revealed that the TCR? repertoire
is largely different between CD8(+) and CD4(+) T cells. Here, we show that the
transduction of SIG35?, the public chain-centric HLA-A*02:01(A2)/MART127-35 TCR?
hemichain, conferred A2/MART127-35 reactivity to a substantial subset of both
CD8(+) and CD4(+) T cells regardless of their HLA-A2 positivity. T cells
individually reconstituted with SIG35? and different A2/MART127-35 TCR? genes
isolated from CD4(+) or CD8(+) T cells exhibited a wide range of avidity.
Surprisingly, approximately half of the A2/MART127-35 TCRs derived from CD4(+) T
cells, but none from CD8(+) T cells, were stained by A2/MART127-35 monomer and
possessed broader cross-reactivity. Our results suggest that the differences in
the primary structure of peripheral CD4(+) and CD8(+) TCR? repertoire indeed
result in the differences in their ability to form extraordinarily high avidity T
cells which would otherwise have been deleted by central tolerance.