alexa Ceramide mediates the apoptotic response of WEHI 231 cells to anti-immunoglobulin, corticosteroids and irradiation.
Cardiology

Cardiology

Journal of Clinical & Experimental Cardiology

Author(s): Quintans J, Kilkus J, McShan CL, Gottschalk AR, Dawson G

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Abstract We demonstrate for the first time how immature B cells kill themselves. Ceramide is identified as the mediator of apoptosis in the murine B lymphoma line WEHI 231 commonly used as a model to study clonal deletion in B lymphocytes. We show that exogenous ceramide induces apoptosis in WEHI 231 cells. To maintain self tolerance, immature lymphocytes readily undergo apoptotic death in response to the cross-linking of their antigen-specific receptors. We demonstrate that endogenously produced ceramide accumulates in WEHI 231 cells exposed to anti-IgM, an antigen surrogate before the onset of apoptosis. We also show that two other inducers of apoptosis, irradiation and dexamethasone, cause intracellular accumulation of ceramide. This article was published in Biochem Biophys Res Commun and referenced in Journal of Clinical & Experimental Cardiology

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