Fingolimod increases CD39-expressing regulatory T cells in multiple sclerosis patients

Multiple sclerosis (MS) likely results from an imbalance between regulatory and inflammatory immune processes. CD39 is an ectoenzyme that cleaves ATP to AMP and has been suggested as a novel regulatory T cells (Treg) marker. As ATP has numerous proinflammatory effects, its degradation by CD39 has an...

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Veröffentlicht in:PloS one 2014-11, Vol.9 (11), p.e113025-e113025
Hauptverfasser: Muls, Nathalie, Dang, Hong Anh, Sindic, Christian J M, van Pesch, Vincent
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Dang, Hong Anh
Sindic, Christian J M
van Pesch, Vincent
description Multiple sclerosis (MS) likely results from an imbalance between regulatory and inflammatory immune processes. CD39 is an ectoenzyme that cleaves ATP to AMP and has been suggested as a novel regulatory T cells (Treg) marker. As ATP has numerous proinflammatory effects, its degradation by CD39 has anti-inflammatory influence. The purpose of this study was to explore regulatory and inflammatory mechanisms activated in fingolimod treated MS patients. Peripheral blood mononuclear cells (PBMCs) were isolated from relapsing-remitting MS patients before starting fingolimod and three months after therapy start. mRNA expression was assessed in ex vivo PBMCs. The proportions of CD8, B cells, CD4 and CD39-expressing cells were analysed by flow cytometry. Treg proportion was quantified by flow cytometry and methylation-specific qPCR. Fingolimod treatment increased mRNA levels of CD39, AHR and CYP1B1 but decreased mRNA expression of IL-17, IL-22 and FOXP3 mRNA in PBMCs. B cells, CD4+ cells and Treg proportions were significantly reduced by this treatment, but remaining CD4+ T cells were enriched in FOXP3+ cells and in CD39-expressing Tregs. In addition to the decrease in circulating CD4+ T cells and CD19+ B cells, our findings highlight additional immunoregulatory mechanisms induced by fingolimod.
doi_str_mv 10.1371/journal.pone.0113025
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CD39 is an ectoenzyme that cleaves ATP to AMP and has been suggested as a novel regulatory T cells (Treg) marker. As ATP has numerous proinflammatory effects, its degradation by CD39 has anti-inflammatory influence. The purpose of this study was to explore regulatory and inflammatory mechanisms activated in fingolimod treated MS patients. Peripheral blood mononuclear cells (PBMCs) were isolated from relapsing-remitting MS patients before starting fingolimod and three months after therapy start. mRNA expression was assessed in ex vivo PBMCs. The proportions of CD8, B cells, CD4 and CD39-expressing cells were analysed by flow cytometry. Treg proportion was quantified by flow cytometry and methylation-specific qPCR. Fingolimod treatment increased mRNA levels of CD39, AHR and CYP1B1 but decreased mRNA expression of IL-17, IL-22 and FOXP3 mRNA in PBMCs. B cells, CD4+ cells and Treg proportions were significantly reduced by this treatment, but remaining CD4+ T cells were enriched in FOXP3+ cells and in CD39-expressing Tregs. In addition to the decrease in circulating CD4+ T cells and CD19+ B cells, our findings highlight additional immunoregulatory mechanisms induced by fingolimod.</description><identifier>ISSN: 1932-6203</identifier><identifier>EISSN: 1932-6203</identifier><identifier>DOI: 10.1371/journal.pone.0113025</identifier><identifier>PMID: 25411844</identifier><language>eng</language><publisher>United States: Public Library of Science</publisher><subject>AMP ; Antigens, CD - genetics ; Antigens, CD - metabolism ; Antigens, CD19 - metabolism ; Apyrase - genetics ; Apyrase - metabolism ; ATP ; B cells ; B-Lymphocytes - metabolism ; Basic Helix-Loop-Helix Transcription Factors - genetics ; Biology and life sciences ; Care and treatment ; CD19 antigen ; CD4 antigen ; CD4-Positive T-Lymphocytes - metabolism ; CD8 antigen ; Cytochrome P-450 CYP1B1 - genetics ; Cytokines ; Cytokines - metabolism ; Cytometry ; Deoxyribonucleic acid ; Dioxins ; DNA ; DNA methylation ; Fingolimod Hydrochloride - administration &amp; dosage ; Fingolimod Hydrochloride - pharmacology ; Flow cytometry ; Foxp3 protein ; Gene expression ; Gene Expression Regulation - drug effects ; Humans ; Hydrocarbons ; Immunoregulation ; Immunosuppressive Agents - administration &amp; dosage ; Immunosuppressive Agents - pharmacology ; Inflammation ; Interleukin 17 ; Interleukin 22 ; Kinases ; Leukocytes (mononuclear) ; Life sciences ; Lymphocytes ; Lymphocytes B ; Lymphocytes T ; Medicine and Health Sciences ; Memory ; Methylation ; Multiple sclerosis ; Multiple Sclerosis - drug therapy ; Multiple Sclerosis - genetics ; Multiple Sclerosis - immunology ; Neurochemistry ; Neurosciences ; Patients ; Peripheral blood mononuclear cells ; Receptors, Aryl Hydrocarbon - genetics ; RNA ; Statistical analysis ; T cells ; T-Lymphocytes, Regulatory - metabolism ; Thermal cycling ; Transcription factors</subject><ispartof>PloS one, 2014-11, Vol.9 (11), p.e113025-e113025</ispartof><rights>COPYRIGHT 2014 Public Library of Science</rights><rights>2014 Muls et al. 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Dang, Hong Anh ; Sindic, Christian J M ; van Pesch, Vincent</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c692t-6089abb00a80dbb74124686090bfb0f4d3bff46615e7473685cddcb4f71c55e53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>AMP</topic><topic>Antigens, CD - genetics</topic><topic>Antigens, CD - metabolism</topic><topic>Antigens, CD19 - metabolism</topic><topic>Apyrase - genetics</topic><topic>Apyrase - metabolism</topic><topic>ATP</topic><topic>B cells</topic><topic>B-Lymphocytes - metabolism</topic><topic>Basic Helix-Loop-Helix Transcription Factors - genetics</topic><topic>Biology and life sciences</topic><topic>Care and treatment</topic><topic>CD19 antigen</topic><topic>CD4 antigen</topic><topic>CD4-Positive T-Lymphocytes - metabolism</topic><topic>CD8 antigen</topic><topic>Cytochrome P-450 CYP1B1 - genetics</topic><topic>Cytokines</topic><topic>Cytokines - metabolism</topic><topic>Cytometry</topic><topic>Deoxyribonucleic acid</topic><topic>Dioxins</topic><topic>DNA</topic><topic>DNA methylation</topic><topic>Fingolimod Hydrochloride - administration &amp; 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CD39 is an ectoenzyme that cleaves ATP to AMP and has been suggested as a novel regulatory T cells (Treg) marker. As ATP has numerous proinflammatory effects, its degradation by CD39 has anti-inflammatory influence. The purpose of this study was to explore regulatory and inflammatory mechanisms activated in fingolimod treated MS patients. Peripheral blood mononuclear cells (PBMCs) were isolated from relapsing-remitting MS patients before starting fingolimod and three months after therapy start. mRNA expression was assessed in ex vivo PBMCs. The proportions of CD8, B cells, CD4 and CD39-expressing cells were analysed by flow cytometry. Treg proportion was quantified by flow cytometry and methylation-specific qPCR. Fingolimod treatment increased mRNA levels of CD39, AHR and CYP1B1 but decreased mRNA expression of IL-17, IL-22 and FOXP3 mRNA in PBMCs. B cells, CD4+ cells and Treg proportions were significantly reduced by this treatment, but remaining CD4+ T cells were enriched in FOXP3+ cells and in CD39-expressing Tregs. In addition to the decrease in circulating CD4+ T cells and CD19+ B cells, our findings highlight additional immunoregulatory mechanisms induced by fingolimod.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>25411844</pmid><doi>10.1371/journal.pone.0113025</doi><oa>free_for_read</oa></addata></record>
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subjects AMP
Antigens, CD - genetics
Antigens, CD - metabolism
Antigens, CD19 - metabolism
Apyrase - genetics
Apyrase - metabolism
ATP
B cells
B-Lymphocytes - metabolism
Basic Helix-Loop-Helix Transcription Factors - genetics
Biology and life sciences
Care and treatment
CD19 antigen
CD4 antigen
CD4-Positive T-Lymphocytes - metabolism
CD8 antigen
Cytochrome P-450 CYP1B1 - genetics
Cytokines
Cytokines - metabolism
Cytometry
Deoxyribonucleic acid
Dioxins
DNA
DNA methylation
Fingolimod Hydrochloride - administration & dosage
Fingolimod Hydrochloride - pharmacology
Flow cytometry
Foxp3 protein
Gene expression
Gene Expression Regulation - drug effects
Humans
Hydrocarbons
Immunoregulation
Immunosuppressive Agents - administration & dosage
Immunosuppressive Agents - pharmacology
Inflammation
Interleukin 17
Interleukin 22
Kinases
Leukocytes (mononuclear)
Life sciences
Lymphocytes
Lymphocytes B
Lymphocytes T
Medicine and Health Sciences
Memory
Methylation
Multiple sclerosis
Multiple Sclerosis - drug therapy
Multiple Sclerosis - genetics
Multiple Sclerosis - immunology
Neurochemistry
Neurosciences
Patients
Peripheral blood mononuclear cells
Receptors, Aryl Hydrocarbon - genetics
RNA
Statistical analysis
T cells
T-Lymphocytes, Regulatory - metabolism
Thermal cycling
Transcription factors
title Fingolimod increases CD39-expressing regulatory T cells in multiple sclerosis patients
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