Ovalbumin-induced plasma interleukin-4 levels are reduced in ceramide kinase-deficient DO11.10 RAG1–/– mice
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Niwa, Satoru, urtz, nicole, Baumruker, Thomas, Billich, Andreas and Bornancin, Frederic (2010) Ovalbumin-induced plasma interleukin-4 levels are reduced in ceramide kinase-deficient DO11.10 RAG1–/– mice. Lipids in Health and Disease, 9 (1). p. 1. ISSN 1476-511X
Abstract
Ceramide kinase (CERK) produces the bioactive lipid ceramide-1-phosphate (C1P) and is a key regulator of ceramide and dihydroceramide levels. It is likely that CERK and C1P play a role in inflammatory processes but the cells involved and the mechanisms used remain to be clarified. In particular, the impact of CERK on T-cell biology has not been studied so far. Here, we used Cerk –/– mice backcrossed with DO11.10/RAG1–/– mice to probe the effect of CERK ablation on T-cell activation. Levels of interleukin (IL)-2, IL-4, IL-5, IL-13, of tumor necrosis factor (TNF)-alpha, and of interferon (INF)-gamma were recorded following ovalbumin challenge in vivo and using ovalbumin-treated splenocytes ex- vivo. Absence of CERK led to a significant decrease in the production of IL-4, thus suggesting that CERK may polarize T cells towards the TH2 cell subtype. However, the importance of CERK to TH2 cell biology will have to be investigated further because in a model of asthma, which is TH2-cell driven, Cerk –/– mice responded like wild-type animals.
| Item Type: | Article |
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| Keywords: | ceramide, kinase, DO11.10, RAG, IL-4, TH2 |
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| Date Deposited: | 13 Oct 2015 13:16 |
| Last Modified: | 13 Oct 2015 13:16 |
| URI: | https://oak.novartis.com/id/eprint/2059 |