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Fatal leishmaniasis in the absence of TNF despite a strong Th1 response
Citation
Fromm, PD and Kling, JC and Remke, A and Bogdan, C and Korner, H, Fatal leishmaniasis in the absence of TNF despite a strong Th1 response, Frontiers in Microbiology, 6, (January) Article 1520. ISSN 1664-302X (2016) [Refereed Article]
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Copyright Statement
Copyright 2016 the authors Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) http://creativecommons.org/licenses/by/4.0/
DOI: doi:10.3389/fmicb.2015.01520
Abstract
Induction of inducible nitric oxide synthase in mononuclear phagocytes by IFN-γ and innate tumor necrosis factor (TNF) provide the basis for an effective immune response to the intracellular parasite Leishmania (L.) major. In previous experiments, we observed a fatal visceral form of leishmaniasis in L. major-infected C57BL/6 TNF(-/-) mice. To further delineate the protective function of TNF and its receptor requirements, we comparatively assessed L. major-infected C57BL/6 mice that were either deficient for membrane and soluble TNF (Tnf - / -), for soluble TNF alone (memTnf(Δ/Δ) ), or the TNF receptors type 1 (Tnfr1 -/ -) or type 2 (Tnfr2 - / -). We detected locally and systemically increased levels of the cytokine IFN-γ in the absence of the TNF-TNFR1-signaling pathway. An analysis of transcription factors and cytokines revealed that activated Tnf - / - CD4(+) T cells displayed a highly active Th1 phenotype with a strong usage of the T cell receptor Vβ5.1/2. From these data we conclude that the fatal outcome of L. major infection in Tnf - / - mice does not result from a skewed or deficient Th1 differentiation.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | IFN-γ, T cell subtypes, cutaneous leishmaniasis, mouse models, tumor necrosis factor |
| Research Division: | Medical and Health Sciences |
| Research Group: | Immunology |
| Research Field: | Immunology not elsewhere classified |
| Objective Division: | Health |
| Objective Group: | Clinical Health (Organs, Diseases and Abnormal Conditions) |
| Objective Field: | Infectious Diseases |
| UTAS Author: | Kling, JC (Miss Jessica Kling) |
| UTAS Author: | Remke, A (Ms Annika Remke) |
| UTAS Author: | Korner, H (Professor Heinrich Korner) |
| ID Code: | 107818 |
| Year Published: | 2016 |
| Web of Science® Times Cited: | 5 |
| Deposited By: | Menzies Institute for Medical Research |
| Deposited On: | 2016-03-24 |
| Last Modified: | 2017-11-07 |
| Downloads: | 100 View Download Statistics |
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