دورية أكاديمية
IDO1 deficiency does not affect disease in mouse models of systemic juvenile idiopathic arthritis and secondary hemophagocyticlymphohistiocytosis
| العنوان: | IDO1 deficiency does not affect disease in mouse models of systemic juvenile idiopathic arthritis and secondary hemophagocyticlymphohistiocytosis |
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| المؤلفون: | Put K., Brisse E., Avau A., Imbrechts M., Mitera T., Janssens R., Proost P., Fallarino F., Wouters C. H., Matthys P. |
| المساهمون: | Put, K., Brisse, E., Avau, A., Imbrechts, M., Mitera, T., Janssens, R., Proost, P., Fallarino, F., Wouters, C. H., Matthys, P. |
| سنة النشر: | 2016 |
| المجموعة: | IRIS Università degli Studi di Perugia |
| مصطلحات موضوعية: | Animal, Apoptosi, Arthritis, Experimental, Juvenile, Cell Proliferation, Cytokine, Cytomegaloviru, Cytomegalovirus Infection, Freund's Adjuvant, Indoleamine-Pyrrole 2,3,-Dioxygenase, Inflammation, Interferon-gamma, Lymphohistiocytosis, Hemophagocytic, Macrophage Activation Syndrome, Mice, Inbred BALB C, Inbred C57BL, Knockout, T-Lymphocyte, Tryptophan Oxygenase |
| الوصف: | Objectives: Indoleamine2,3-dioxygenase-1 (IDO1) is an immune-modulatory enzyme that catalyzes the degradation of tryptophan (Trp) to kynurenine (Kyn) and is strongly induced by interferon (IFN)-y. We previously reported highly increased levels of IFN-yand corresponding IDO activity in patients with hemophagocytic lymphohistiocytosis (HLH), a hyper-inflammatory syndrome. On the other hand, IFN-yand IDO were low in patients with systemic juvenile idiopathic arthritis (sJIA), an autoinflammatory syndrome. As HLH can occur as a complication of sJIA, the opposing levels of both IFN-y and IDO are remarkable. In animal models for sJIA and HLH, the role of IFN-y differs from being protective to pathogenic. In this study, we aimed to unravel the role of IDO1 in the pathogenesis of sJIA and HLH. Methods: Wild-type and IDO1-knockout (IDO1-KO) mice were used in 3modelsof sJIA or HLH: complete Freund's adjuvant (CFA)-injected mice developed an sJIA-like syndrome and secondary HLH (sHLH) was evoked by either repeated injection of unmethylated CpG oligonucleotide or by primary infection with mouse cytomegalovirus (MCMV). An anti-CD3-induced cytokine release syndrome was used as a non-sJIA/HLH control model. Results: No differences were found in clinical, laboratory and hematological features of sJIA/HLH between wild-type and IDO1-KO mice. As IDO modulates the immune response via induction of regulatory T cells and inhibition of T cell proliferation, we investigated both features in a T cell-triggered cytokine release syndrome. Again, no differences were observed in serum cytokine levels, percentages of regulatory T cells, nor of proliferating or apoptotic thymocytes and lymph node cells. Conclusions: Our data demonstrate that IDO1 deficiency does not affect inflammation in sJIA, sHLH and a T cell-triggered cytokine release model. We hypothesize that other tryptophan-catabolizing enzymes like IDO2 and tryptophan 2,3-dioxygenase (TDO) might compensate for the lack of IDO1. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | ELETTRONICO |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/pmid/26914138; info:eu-repo/semantics/altIdentifier/wos/WOS:000371175700050; volume:11; issue:2; firstpage:e0150075; journal:PLOS ONE; http://hdl.handle.net/11391/1461585Test; info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84962520363 |
| DOI: | 10.1371/journal.pone.0150075 |
| الإتاحة: | https://doi.org/10.1371/journal.pone.0150075Test http://hdl.handle.net/11391/1461585Test |
| رقم الانضمام: | edsbas.C1AF2E2E |
| قاعدة البيانات: | BASE |
| DOI: | 10.1371/journal.pone.0150075 |
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