SUPPRESSION OF THE IN VIVO HUMORAL AND CELLULAR IMMUNE RESPONSE BY STAPHYLOCOCCAL ENTEROTOXIN B (SEB)

1978 ◽  
Vol 25 (6) ◽  
pp. 320-323 ◽  
Author(s):  
M. PINTO ◽  
M. TOKTEN ◽  
S. C. BIRNBAUM
2001 ◽  
Vol 69 (9) ◽  
pp. 5949-5952 ◽  
Author(s):  
Fanny N. Lauw ◽  
Sandrine Florquin ◽  
Peter Speelman ◽  
Sander J. H. van Deventer ◽  
Tom van der Poll

ABSTRACT In the present study, the roles of interleukin 12 (IL-12) and IL-18 and their possible interaction during superantigen-induced responses were studied by injection of staphylococcal enterotoxin B (SEB) into mice. These data suggest that the role of IL-12 in SEB-induced responses is limited to sustaining gamma interferon release by an IL-18-independent mechanism.


1996 ◽  
Vol 64 (11) ◽  
pp. 4567-4573 ◽  
Author(s):  
R Vabulas ◽  
R Bittlingmaier ◽  
K Heeg ◽  
H Wagner ◽  
T Miethke

1996 ◽  
Vol 183 (6) ◽  
pp. 2481-2488 ◽  
Author(s):  
H W Mittrücker ◽  
A Shahinian ◽  
D Bouchard ◽  
T M Kündig ◽  
T W Mak

We used CD28-deficient mice to analyze the importance of CD28 costimulation for the response against Staphylococcal enterotoxin B (SEB) in vivo. CD28 was necessary for the strong expansion of V beta 8+ T cells, but not for deletion. The lack of expansion was not due to a failure of SEB to activate V beta 8+ T cells, as V beta 8+ T cells from both CD28-/- and CD28+/+ mice showed similar phenotypic changes within the first 24 h after SEB injection and cell cycle analysis showed that an equal percentage of V beta 8+ T cells started to proliferate. However, the phenotype and the state of proliferation of V beta 8+ T cells was different at later time points. Furthermore, in CD28-/- mice injection with SEB led to rapid induction of unresponsiveness in SEB responsive T cells, indicated by a drastic reduction of proliferation after secondary SEB stimulation in vitro. Unresponsiveness could also be demonstrated in vivo, as CD28-/- mice produced only marginal amounts of TNF alpha after rechallenge with SEB. In addition CD28-/- mice were protected against a lethal toxic shock induced by a second injection with SEB. Our results indicate that CD28 costimulation is crucial for the T cell-mediated toxicity of SEB and demonstrate that T cell stimulation in the absence of CD28 costimulation induces unresponsiveness in vivo.


2019 ◽  
Vol 431 (21) ◽  
pp. 4354-4367 ◽  
Author(s):  
Gang Chen ◽  
Hatice Karauzum ◽  
Hua Long ◽  
Danielle Carranza ◽  
Frederick W. Holtsberg ◽  
...  

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