نتایج جستجو برای: sphingomyelinase

تعداد نتایج: 1839  

Journal: :Journal of immunology 2005
Alexandre K Rouquette-Jazdanian Arnaud Foussat Laurence Lamy Claudette Pelassy Patricia Lagadec Jean-Philippe Breittmayer Claude Aussel

The inhibition of human CD4+ T lymphocyte activation and proliferation by cholera toxin B-subunit (CTB) is a well-established phenomenon; nevertheless, the exact mechanism remained unclear. In the present study, we propose an explanation for the rCTB-induced inhibition of CD4+ T lymphocytes. rCTB specifically binds to GM1, a raft marker, and strongly modifies the lipid composition of rafts. Fir...

Journal: :Journal of Investigative Dermatology 1978

Journal: :Journal of Menopausal Medicine 2015

Journal: :The Journal of Experimental Medicine 1995
L M Boucher K Wiegmann A Fütterer K Pfeffer T Machleidt S Schütze T W Mak M Krönke

T cell receptor recognition of antigen can lead either to T lymphocyte differentiation and proliferation or to a state of unresponsiveness, which is dependent on whether appropriate costimulatory signals are provided to the mature T cell. We have investigated a novel intracellular signaling pathway provided by the costimulatory molecule CD28. CD28 engagement triggers the activation of an acidic...

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