1
|
Lohmann L, Janoschka C, Schulte-Mecklenbeck A, Klinsing S, Kirstein L, Hanning U, Wirth T, Schneider-Hohendorf T, Schwab N, Gross CC, Eveslage M, Meuth SG, Wiendl H, Klotz L. Immune Cell Profiling During Switching from Natalizumab to Fingolimod Reveals Differential Effects on Systemic Immune-Regulatory Networks and on Trafficking of Non-T Cell Populations into the Cerebrospinal Fluid-Results from the ToFingo Successor Study. Front Immunol 2018; 9:1560. [PMID: 30050529 PMCID: PMC6052886 DOI: 10.3389/fimmu.2018.01560] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 06/25/2018] [Indexed: 11/13/2022] Open
Abstract
Leukocyte sequestration is an established therapeutic concept in multiple sclerosis (MS) as represented by the trafficking drugs natalizumab (NAT) and fingolimod (FTY). However, the precise consequences of targeting immune cell trafficking for immunoregulatory network functions are only incompletely understood. In the present study, we performed an in-depth longitudinal characterization of functional and phenotypic immune signatures in peripheral blood (PB) and cerebrospinal fluid (CSF) of 15 MS patients during switching from long-term NAT to FTY treatment after a defined 8-week washout period within a clinical trial (ToFingo successor study; ClinicalTrials.gov: NCT02325440). Unbiased visualization and analysis of high-dimensional single cell flow-cytometry data revealed that switching resulted in a profound alteration of more than 80% of investigated innate and adaptive immune cell subpopulations in the PB, revealing an unexpectedly broad effect of trafficking drugs on peripheral immune signatures. Longitudinal CSF analysis demonstrated that NAT and FTY both reduced T cell subset counts and proportions in the CSF of MS patients with equal potency; NAT however was superior with regard to sequestering non-T cell populations out of the CSF, including B cells, natural killer cells and inflammatory monocytes, suggesting that disease exacerbation in the context of switching might be driven by non-T cell populations. Finally, correlation of our immunological data with signs of disease exacerbation in this small cohort suggested that both (i) CD49d expression levels under NAT at the time of treatment cessation and (ii) swiftness of FTY-mediated effects on immune cell subsets in the PB together may predict stability during switching later on.
Collapse
Affiliation(s)
- Lisa Lohmann
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Muenster, Germany
| | - Claudia Janoschka
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Muenster, Germany
| | - Andreas Schulte-Mecklenbeck
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Muenster, Germany
| | - Svenja Klinsing
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Muenster, Germany
| | - Lucienne Kirstein
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Muenster, Germany
| | - Uta Hanning
- Department of Radiology, University Hospital Münster, Muenster, Germany
| | - Timo Wirth
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Muenster, Germany
| | - Tilman Schneider-Hohendorf
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Muenster, Germany
| | - Nicholas Schwab
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Muenster, Germany
| | - Catharina C Gross
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Muenster, Germany
| | - Maria Eveslage
- Institute of Biostatistics and Clinical Research, University of Münster, Muenster, Germany
| | - Sven G Meuth
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Muenster, Germany
| | - Heinz Wiendl
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Muenster, Germany
| | - Luisa Klotz
- Department of Neurology with Institute of Translational Neurology, University Hospital Münster, Muenster, Germany
| |
Collapse
|
2
|
Iacobaeus E, Douagi I, Jitschin R, Marcusson-Ståhl M, Andrén AT, Gavin C, Lefsihane K, Davies LC, Mougiakakos D, Kadri N, Le Blanc K. Phenotypic and functional alterations of myeloid-derived suppressor cells during the disease course of multiple sclerosis. Immunol Cell Biol 2018; 96:820-830. [PMID: 29569304 DOI: 10.1111/imcb.12042] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Revised: 03/15/2018] [Accepted: 03/15/2018] [Indexed: 12/20/2022]
Abstract
Multiple sclerosis (MS) is a chronic autoimmune disease of the central nervous system involving dysregulated encephalitogenic T cells. Myeloid-derived suppressor cells (MDSCs) have been recognized for their important function in regulating T-cell responses. Recent studies have indicated a role for MDSCs in autoimmune diseases, but their significance in MS is not clear. Here, we assessed the frequencies of CD14+ HLA-DRlow monocytic MDSCs (Mo-MDSCs) and CD33+ CD15+ CD11b+ HLA-DRlow granulocytic MDSCs (Gr-MDSCs) and investigated phenotypic and functional differences of Mo-MDSCs at different clinical stages of MS and in healthy subjects (HC). Increased frequencies of Mo-MDSCs (P < 0.05) and Gr-MDSCs (P < 0.05) were observed in relapsing-remitting MS patients during relapse (RRMS-relapse) compared to stable RRMS (RRMS-rem). Secondary progressive MS (SPMS) patients displayed a decreased frequency of Mo-MDSCs and Gr-MDSCs compared to HC (P < 0.05). Mo-MDSCs within RRMS patients expressed significantly higher cell surface protein levels of CD86 and CD163 compared to SPMS patients. Mo-MDSCs within SPMS exhibited decreased mRNA expression of interleukin-10 and heme oxygenase 1 compared to RRMS and HC. Analysis of T-cell regulatory function of Mo-MDSCs demonstrated T-cell suppressive capacity in RRMS and HCs, while Mo-MDSCs of SPMS promoted autologous T-cell proliferation, which aligned with a differential cytokine profile compared to RRMS and HCs. This study is the first to show phenotypic and functional shifts of MDSCs between clinical stages of MS, suggesting a role for MDSCs as a therapeutic target to prevent MS disease progression.
Collapse
Affiliation(s)
- Ellen Iacobaeus
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden.,Division of Neurology, Department of Clinical Neuroscience, Karolinska Institute, Stockholm, Sweden
| | - Iyadh Douagi
- Department of Medicine, Center for Hematology and Regenerative Medicine, Karolinska Institute, Stockholm, Sweden
| | - Regina Jitschin
- Department of Internal Medicine 5, Hematology and Oncology, University of Erlangen-Nürnberg, Erlangen, Germany
| | - Maritha Marcusson-Ståhl
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden
| | - Anton Törnqvist Andrén
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden
| | - Caroline Gavin
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden
| | - Katia Lefsihane
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden
| | - Lindsay C Davies
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden
| | - Dimitrios Mougiakakos
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden
| | - Nadir Kadri
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden
| | - Katarina Le Blanc
- Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute, Stockholm, Sweden
| |
Collapse
|
3
|
Maggi J, Schinnerling K, Pesce B, Hilkens CM, Catalán D, Aguillón JC. Dexamethasone and Monophosphoryl Lipid A-Modulated Dendritic Cells Promote Antigen-Specific Tolerogenic Properties on Naive and Memory CD4 + T Cells. Front Immunol 2016; 7:359. [PMID: 27698654 PMCID: PMC5027201 DOI: 10.3389/fimmu.2016.00359] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 09/01/2016] [Indexed: 12/20/2022] Open
Abstract
Tolerogenic dendritic cells (DCs) are a promising tool to control T cell-mediated autoimmunity. Here, we evaluate the ability of dexamethasone-modulated and monophosphoryl lipid A (MPLA)-activated DCs [MPLA-tolerogenic DCs (tDCs)] to exert immunomodulatory effects on naive and memory CD4+ T cells in an antigen-specific manner. For this purpose, MPLA-tDCs were loaded with purified protein derivative (PPD) as antigen and co-cultured with autologous naive or memory CD4+ T cells. Lymphocytes were re-challenged with autologous PPD-pulsed mature DCs (mDCs), evaluating proliferation and cytokine production by flow cytometry. On primed-naive CD4+ T cells, the expression of regulatory T cell markers was evaluated and their suppressive ability was assessed in autologous co-cultures with CD4+ effector T cells and PPD-pulsed mDCs. We detected that memory CD4+ T cells primed by MPLA-tDCs presented reduced proliferation and proinflammatory cytokine expression in response to PPD and were refractory to subsequent stimulation. Naive CD4+ T cells were instructed by MPLA-tDCs to be hyporesponsive to antigen-specific restimulation and to suppress the induction of T helper cell type 1 and 17 responses. In conclusion, MPLA-tDCs are able to modulate antigen-specific responses of both naive and memory CD4+ T cells and might be a promising strategy to “turn off” self-reactive CD4+ effector T cells in autoimmunity.
Collapse
Affiliation(s)
- Jaxaira Maggi
- Programa Disciplinario de Inmunología, Immune Regulation and Tolerance Research Group, Facultad de Medicina, Instituto de Ciencias Biomédicas (ICBM), Universidad de Chile, Santiago, Chile; Millennium Institute on Immunology and Immunotherapy (MIII), Santiago, Chile
| | - Katina Schinnerling
- Programa Disciplinario de Inmunología, Immune Regulation and Tolerance Research Group, Facultad de Medicina, Instituto de Ciencias Biomédicas (ICBM), Universidad de Chile, Santiago, Chile; Millennium Institute on Immunology and Immunotherapy (MIII), Santiago, Chile
| | - Bárbara Pesce
- Programa Disciplinario de Inmunología, Immune Regulation and Tolerance Research Group, Facultad de Medicina, Instituto de Ciencias Biomédicas (ICBM), Universidad de Chile , Santiago , Chile
| | - Catharien M Hilkens
- Musculoskeletal Research Group, Faculty of Medical Sciences, Institute of Cellular Medicine, Newcastle University , Newcastle upon Tyne , UK
| | - Diego Catalán
- Programa Disciplinario de Inmunología, Immune Regulation and Tolerance Research Group, Facultad de Medicina, Instituto de Ciencias Biomédicas (ICBM), Universidad de Chile, Santiago, Chile; Millennium Institute on Immunology and Immunotherapy (MIII), Santiago, Chile
| | - Juan C Aguillón
- Programa Disciplinario de Inmunología, Immune Regulation and Tolerance Research Group, Facultad de Medicina, Instituto de Ciencias Biomédicas (ICBM), Universidad de Chile, Santiago, Chile; Millennium Institute on Immunology and Immunotherapy (MIII), Santiago, Chile
| |
Collapse
|
4
|
Kempuraj D, Konstantinidou A, Boscolo P, Ferro F, Di Giannantonio M, Conti CM, Merlitti D, Petrarca C, Castellani ML, Doyle R, Theoharides TC. Cytokines and the Brain. Int J Immunopathol Pharmacol 2016; 17:229-32. [PMID: 15461855 DOI: 10.1177/039463200401700301] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
5
|
Demoulin SA, Somja J, Duray A, Guénin S, Roncarati P, Delvenne PO, Herfs MF, Hubert PM. Cervical (pre)neoplastic microenvironment promotes the emergence of tolerogenic dendritic cells via RANKL secretion. Oncoimmunology 2015; 4:e1008334. [PMID: 26155412 PMCID: PMC4485731 DOI: 10.1080/2162402x.2015.1008334] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Revised: 12/16/2014] [Accepted: 01/08/2015] [Indexed: 12/20/2022] Open
Abstract
The progression of genital human papillomavirus (HPV) infections into preneoplastic lesions suggests that infected/malignant cells are not adequately recognized by the immune system. In this study, we demonstrated that cervical/vulvar cancer cells secrete factor(s) that affect both the maturation and function of dendritic cells (DC) leading to a tolerogenic profile. Indeed, DC cocultured with cancer cell lines display both a partially mature phenotype after lipopolysaccharide (LPS) maturation and an altered secretory profile (IL-10high and IL-12p70low). In addition, tumor-converted DC acquire the ability to alter T-cell proliferation and to induce FoxP3+ suppressive T cells from naive CD4+ T cells. Among the immunosuppressive factors implicated in DC alterations in genital (pre)neoplastic microenvironment, we identified receptor activator of nuclear factor kappa-B ligand (RANKL), a TNF family member, as a potential candidate. For the first time, we showed that RANKL expression strongly increases during cervical progression. We also confirmed that RANKL is directly secreted by cancer cells and this expression is not related to HPV viral oncoprotein induction. Interestingly, the addition of osteoprotegerin (OPG) in coculture experiments reduces significantly the inhibition of DC maturation, the release of a tolerogenic cytokine profile (IL-12low IL-10high) and the induction of regulatory T (Treg) cells. Our findings suggest that the use of inhibitory molecules directed against RANKL in cervical/vulvar (pre)neoplastic lesions might prevent alterations of DC functionality and represent an attractive strategy to overcome immune tolerance in such cancers.
Collapse
Key Words
- LC, Langerhans cells; LPS, lipopolysaccharide
- APC, antigen presenting cells; DC, dendritic cells
- GILZ, glucocorticoid-induced leucine zipper; HPV, human papillomavirus
- HSIL, high grade intraepithelial lesions
- IHC, immunohistochemistry
- ILT3, Immunoglobulin-like transcript 3
- KN, normal keratinocytes
- LSIL, low grade intraepithelial lesion
- MFI, mean fluorescence intensity
- OPG, osteoprotegerin
- PBMC, peripheral blood mononuclear cells; pDC, plasmacytoid dendritic cells
- RANKL
- RANKL, Receptor activator of nuclear factor kappa-B ligand
- SCC, squamous cell carcinoma
- SIL, squamous intraepithelial neoplasia
- Treg cells
- Treg cells, regulatory T cells
- VIN, vulvar intraepithelial neoplasia
- cervical cancers
- dendritic cells
- tolerogenicity
Collapse
Affiliation(s)
- Stéphanie A Demoulin
- Laboratory of Experimental Pathology; GIGA-Cancer; University of Liège ; Liège, Belgium
| | - Joan Somja
- Department of Pathology; University Hospital of Liège ; Liège, Belgium
| | - Anaëlle Duray
- Laboratory of Experimental Pathology; GIGA-Cancer; University of Liège ; Liège, Belgium
| | - Samuel Guénin
- Laboratory of Experimental Pathology; GIGA-Cancer; University of Liège ; Liège, Belgium
| | - Patrick Roncarati
- Laboratory of Experimental Pathology; GIGA-Cancer; University of Liège ; Liège, Belgium
| | | | - Michael F Herfs
- Laboratory of Experimental Pathology; GIGA-Cancer; University of Liège ; Liège, Belgium
| | - Pascale M Hubert
- Laboratory of Experimental Pathology; GIGA-Cancer; University of Liège ; Liège, Belgium
| |
Collapse
|
6
|
Role of the immunogenic and tolerogenic subsets of dendritic cells in multiple sclerosis. Mediators Inflamm 2015; 2015:513295. [PMID: 25705093 PMCID: PMC4325219 DOI: 10.1155/2015/513295] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2014] [Revised: 01/01/2015] [Accepted: 01/01/2015] [Indexed: 12/13/2022] Open
Abstract
Multiple sclerosis (MS) is an immune-mediated disorder in the central nervous system (CNS) characterized by inflammation and demyelination as well as axonal and neuronal degeneration. So far effective therapies to reverse the disease are still lacking; most therapeutic drugs can only ameliorate the symptoms or reduce the frequency of relapse. Dendritic cells (DCs) are professional antigen presenting cells (APCs) that are key players in both mediating immune responses and inducing immune tolerance. Increasing evidence indicates that DCs contribute to the pathogenesis of MS and might provide an avenue for therapeutic intervention. Here, we summarize the immunogenic and tolerogenic roles of DCs in MS and review medicinal drugs that may affect functions of DCs and have been applied in clinic for MS treatment. We also describe potential therapeutic molecules that can target DCs by inducing anti-inflammatory cytokines and inhibiting proinflammatory cytokines in MS.
Collapse
|
7
|
Ren Y, Yang Y, Yang J, Xie R, Fan H. Tolerogenic dendritic cells modified by tacrolimus suppress CD4+ T-cell proliferation and inhibit collagen-induced arthritis in mice. Int Immunopharmacol 2014; 21:247-54. [DOI: 10.1016/j.intimp.2014.05.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2013] [Revised: 04/22/2014] [Accepted: 05/02/2014] [Indexed: 12/21/2022]
|
8
|
A novel subset of helper T cells promotes immune responses by secreting GM-CSF. Cell Death Differ 2013; 20:1731-41. [PMID: 24076588 DOI: 10.1038/cdd.2013.130] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 08/08/2013] [Accepted: 08/09/2013] [Indexed: 01/09/2023] Open
Abstract
Helper T cells are crucial for maintaining proper immune responses. Yet, they have an undefined relationship with one of the most potent immune stimulatory cytokines, granulocyte macrophage-colony-stimulating factor (GM-CSF). By depleting major cytokines during the differentiation of CD4(+) T cells in vitro, we derived cells that were found to produce large amounts of GM-CSF, but little of the cytokines produced by other helper T subsets. By their secretion of GM-CSF, this novel subset of helper T cells (which we have termed ThGM cells) promoted the production of cytokines by other T-cell subtypes, including type 1 helper T cell (Th1), type 2 helper T cell (Th2), type 1 cytotoxic T cell (Tc1), type 2 cytotoxic T cell (Tc2), and naive T cells, as evidenced by the fact that antibody neutralization of GM-CSF abolished this effect. ThGM cells were found to be highly prone to activation-induced cell death (AICD). Inhibitors of TRAIL or granzymes could not block AICD in ThGM cells, whereas inhibition of FasL/Fas interaction partially rescued ThGM cells from AICD. Thus, ThGM cells are a novel subpopulation of T helper cells that produce abundant GM-CSF, exhibit exquisite susceptibility to apoptosis, and therefore play a pivotal role in the regulation of the early stages of immune responses.
Collapse
|
9
|
García-González P, Morales R, Hoyos L, Maggi J, Campos J, Pesce B, Gárate D, Larrondo M, González R, Soto L, Ramos V, Tobar P, Molina MC, Pino-Lagos K, Catalán D, Aguillón JC. A short protocol using dexamethasone and monophosphoryl lipid A generates tolerogenic dendritic cells that display a potent migratory capacity to lymphoid chemokines. J Transl Med 2013; 11:128. [PMID: 23706017 PMCID: PMC3674980 DOI: 10.1186/1479-5876-11-128] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Accepted: 05/20/2013] [Indexed: 11/30/2022] Open
Abstract
Background Generation of tolerogenic dendritic cells (TolDCs) for therapy is challenging due to its implications for the design of protocols suitable for clinical applications, which means not only using safe products, but also working at defining specific biomarkers for TolDCs identification, developing shorter DCs differentiation methods and obtaining TolDCs with a stable phenotype. We describe here, a short-term protocol for TolDCs generation, which are characterized in terms of phenotypic markers, cytokines secretion profile, CD4+ T cell-stimulatory ability and migratory capacity. Methods TolDCs from healthy donors were generated by modulation with dexamethasone plus monophosphoryl lipid A (MPLA-tDCs). We performed an analysis of MPLA-tDCs in terms of yield, viability, morphology, phenotypic markers, cytokines secretion profile, stability, allogeneic and antigen-specific CD4+ T-cell stimulatory ability and migration capacity. Results After a 5-day culture, MPLA-tDCs displayed reduced expression of costimulatory and maturation molecules together to an anti-inflammatory cytokines secretion profile, being able to maintain these tolerogenic features even after the engagement of CD40 by its cognate ligand. In addition, MPLA-tDCs exhibited reduced capabilities to stimulate allogeneic and antigen-specific CD4+ T cell proliferation, and induced an anti-inflammatory cytokine secretion pattern. Among potential tolerogenic markers studied, only TLR-2 was highly expressed in MPLA-tDCs when compared to mature and immature DCs. Remarkable, like mature DCs, MPLA-tDCs displayed a high CCR7 and CXCR4 expression, both chemokine receptors involved in migration to secondary lymphoid organs, and even more, in an in vitro assay they exhibited a high migration response towards CCL19 and CXCL12. Conclusion We describe a short-term protocol for TolDC generation, which confers them a stable phenotype and migratory capacity to lymphoid chemokines, essential features for TolDCs to be used as therapeutics for autoimmunity and prevention of graft rejection.
Collapse
Affiliation(s)
- Paulina García-González
- Immune Regulation and Tolerance Research Group, Programa Disciplinario de Inmunología, ICBM, Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Blaževski J, Petković F, Momčilović M, Jevtic B, Miljković D, Mostarica Stojković M. High interleukin-10 expression within the central nervous system may be important for initiation of recovery of Dark Agouti rats from experimental autoimmune encephalomyelitis. Immunobiology 2013; 218:1192-9. [PMID: 23664544 DOI: 10.1016/j.imbio.2013.04.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 04/03/2013] [Accepted: 04/07/2013] [Indexed: 10/27/2022]
Abstract
Dark Agouti (DA) rats are highly susceptible to induction of experimental autoimmune encephalomyelitis (EAE), still they completely recover from the disease. Here, we were interested to determine contribution of major anti-inflammatory cytokines transforming growth factor (TGF)-β and interleukin (IL)-10 to the recovery of DA rats from EAE. To that extent we determined CNS expression of these cytokines in DA rats at different phases of EAE and compared data to those obtained in EAE-resistant Albino Oxford (AO) rats. Higher expression of TGF-β was persistently observed in the CNS of AO rats, even if rats were not immunized. This implied that high TGF-β within the CNS is important for resistance of AO rats to EAE induction. On the contrary, IL-10 expression was consistently higher in DA than in AO rats and it culminated at the peak of EAE. Methylprednisolone suppressed EAE and expression of IL-10 in spinal cord homogenates, while IL-10 was increased in CNS-infiltrating immune cells. This implied that IL-10 might have a significant role in recovery of DA rats from the disease. Thus, we next explored effects of IL-10 on astrocytes, glial cells that largely contribute to control of CNS inflammation. IL-10 stimulated astrocytic expression of an important regulator of neuroinflammation, CXCL12. Thus, IL-10 might contribute to recovery of DA rats from EAE through induction of CXCL12 expression in astrocytes.
Collapse
Affiliation(s)
- Jana Blaževski
- Department of Immunology, Institute for Biological Research, Siniša Stanković, University of Belgrade, Serbia
| | | | | | | | | | | |
Collapse
|
11
|
Timotijević G, Mostarica Stojković M, Miljković D. CXCL12: Role in neuroinflammation. Int J Biochem Cell Biol 2012; 44:838-41. [DOI: 10.1016/j.biocel.2012.03.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2011] [Revised: 03/14/2012] [Accepted: 03/22/2012] [Indexed: 01/20/2023]
|
12
|
|
13
|
Guo F, Chang CK, Fan HH, Nie XX, Ren YN, Liu YY, Zhao LH. Anti-tumour effects of exosomes in combination with cyclophosphamide and polyinosinic-polycytidylic acid. J Int Med Res 2009; 36:1342-53. [PMID: 19094445 DOI: 10.1177/147323000803600623] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
We examined the anti-tumour activity of exosomes derived from dendritic cells (DCs) in combination with cyclophosphamide (CTX) and polyinosinic-polycytidylic acid sodium salt (poly I:C). DCs were pulsed with L1210 lymphocytic leukaemia cell antigen and lipopolysaccharide. The exosomes that the DCs secreted were purified. In vitro, the anti-tumour activity of exosomes was assessed by measuring their ability to induce spleen cell proliferation and the extent to which they induced spleen cells to kill L1210 cells. Poly I:C was able to induce DC maturation. DC-derived exosomes stimulated spleen cell proliferation and enhanced the cytotoxic effects of spleen cells in vitro. DC-derived exosomes, in combination with CTX and poly I:C, suppressed L1210 tumour growth in vivo and gave the greatest prolongation of survival time in tumour-bearing DBA2 mice. These findings suggest that this combination of a tumour vaccine, a conventional anti-cancer agent and a promoter of DC maturation might be a useful anti-cancer therapy.
Collapse
Affiliation(s)
- F Guo
- Shanghai Number 6 Hospital, Shanghai [corrected] China
| | | | | | | | | | | | | |
Collapse
|
14
|
Hou G, Abrams GD, Dick R, Brewer GJ. Efficacy of tetrathiomolybdate in a mouse model of multiple sclerosis. Transl Res 2008; 152:239-44. [PMID: 19010295 DOI: 10.1016/j.trsl.2008.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2008] [Revised: 09/09/2008] [Accepted: 09/10/2008] [Indexed: 10/21/2022]
Abstract
Tetrathiomolybdate (TM) is a potent anticopper drug developed for Wilson's disease. We have found multiple efficacious results from decreasing copper levels with TM in mouse models of disease, using serum Cp as a surrogate marker of copper status and targeting Cp values of 20% to 50% of baseline. We have found efficacious results of TM therapy in mouse models of fibrosis; inflammation; damage from exogenous agents, such as acetaminophen and doxorubicin; and immune-modulated diseases, such as concanavalin A hepatitis, collagen II-induced arthritis, and the non-obese diabetic (NOD) mouse model of type I diabetes. In the current study, we examine TM efficacy in the EAE mouse model of multiple sclerosis (MS). We find that clinical scores of neurologic damage are significantly inhibited by TM therapy, whether therapy is started before MS-inducing antigen administration or after symptoms from antigen administration develop. Furthermore, we find that experimental autoimmune encephalomyelitis (EAE) treatment produces a marked increase of oxidant damage, as measured by urine isoprostane levels, and TM suppresses these isoprostane increases strongly and significantly. Finally, we find marked increases of inflammatory and immune-related cytokines in this model, and we find that TM strongly and significantly suppresses these increases.
Collapse
Affiliation(s)
- Guoqing Hou
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, Mich. 48109-0534, USA
| | | | | | | |
Collapse
|
15
|
Hubert P, Jacobs N, Caberg JH, Boniver J, Delvenne P. The cross-talk between dendritic and regulatory T cells: good or evil? J Leukoc Biol 2007; 82:781-94. [PMID: 17652446 DOI: 10.1189/jlb.1106694] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Immune responses against pathogens require fine regulation to avoid excessive inflammation, which could be harmful to the host. Moreover, the immune system must be tolerant to nonpathogenic antigens to prevent allergy, autoimmunity, and transplant rejection. There is accumulating evidence that interactions between dendritic cells (DC) and regulatory T (Treg) cells play a crucial role in the balance between immune response and tolerance. Communications between these cells are complex, bidirectional, and mediated by soluble or cell surface molecules. The maturation status of DC, which may be influenced by different microenvironmental factors, is considered as an important checkpoint for the induction of peripheral tolerance through modifications of the activation status of T cells. Moreover, several lines of experimental evidence suggest that different subsets or the functional status of DC are also involved in the promotion of Treg cell differentiation. A better knowledge of the regulatory mechanisms of the immune response induced or inhibited by DC via their interactions with Treg cells could be relevant for the development of new, immunotherapeutic approaches.
Collapse
Affiliation(s)
- Pascale Hubert
- Department of Pathology, CRCE-CBIG, B35, University of Liege, CHU of Liege, Liege, Belgium.
| | | | | | | | | |
Collapse
|
16
|
Graber JJ, Ford D, Zhan M, Francis G, Panitch H, Dhib-Jalbut S. Cytokine changes during interferon-beta therapy in multiple sclerosis: correlations with interferon dose and MRI response. J Neuroimmunol 2007; 185:168-74. [PMID: 17328965 PMCID: PMC1894687 DOI: 10.1016/j.jneuroim.2007.01.011] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2006] [Revised: 01/22/2007] [Accepted: 01/22/2007] [Indexed: 02/04/2023]
Abstract
We investigated serum (IL-10 and IL-12p70) and cellular cytokine levels (IL-10, IL-12p40, IL-12p70, IFN-gamma) in stimulated PBMC over 24 weeks in 15 relapsing-remitting multiple sclerosis (MS) patients randomized to receive once-weekly (qw) IFN-beta-1a 30 microg intramuscularly (IM) (n=8) or three-times-weekly (tiw) IFN-beta-1a 44 microg subcutaneously (SC) (n=7). Overall, IFN-beta treatment increased cellular IL-10 (p<0.01) levels and the ratios of cellular IL-10/IL-12p40 (p<0.01) and IL-10/IL-12p70 (p<0.02) while cellular IFN-gamma levels were reduced (p<0.01). Serum IL-10 levels were decreased in non-responders to therapy based on MRI-defined criteria (p<0.01) but did not change in responders over the course of treatment. In addition, non-responders demonstrated a decrease in serum IL-10/IL-12p70 ratio (p=0.031) and a decrease in cellular IL-12p70 (p<0.02). A decrease in cellular IFN-gamma was observed in responders (p=0.013). This is the first study that compares cytokine changes between the two IFN-beta regimes and demonstrates that serum IL-10 levels decrease in those patients who continue to have active MRI lesions while on interferon-beta therapy.
Collapse
Affiliation(s)
- Jerome J Graber
- University of Maryland School of Medicine, Department of Neurology, MD, USA
| | | | | | | | | | | |
Collapse
|
17
|
|