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2014 ; 111
(48
): 17248-53
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Optimal T-cell receptor affinity for inducing autoimmunity
#MMPMID25411315
Koehli S
; Naeher D
; Galati-Fournier V
; Zehn D
; Palmer E
Proc Natl Acad Sci U S A
2014[Dec]; 111
(48
): 17248-53
PMID25411315
show ga
T-cell receptor affinity for self-antigen has an important role in establishing
self-tolerance. Three transgenic mouse strains expressing antigens of variable
affinity for the OVA transgenic-I T-cell receptor were generated to address how
TCR affinity affects the efficiency of negative selection, the ability to prime
an autoimmune response, and the elimination of the relevant target cell. Mice
expressing antigens with an affinity just above the negative selection threshold
exhibited the highest risk of developing experimental autoimmune diabetes. The
data demonstrate that close to the affinity threshold for negative selection,
sufficient numbers of self-reactive T cells escape deletion and create an
increased risk for the development of autoimmunity.
|Animals
[MESH]
|Autoantigens/*immunology/metabolism
[MESH]
|Autoimmunity/genetics/*immunology
[MESH]
|Binding, Competitive/immunology
[MESH]
|Diabetes Mellitus, Type 1/genetics/immunology/metabolism
[MESH]