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Park JY, Choe YJ, Lim Y, Kim H, Kim J. Association between the incidence of type 1 diabetes mellitus and tuberculosis or bacillus Calmette-Guérin immunization in children and adolescents. Ann Pediatr Endocrinol Metab 2023; 28:251-257. [PMID: 38173381 PMCID: PMC10765028 DOI: 10.6065/apem.2244254.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 03/20/2023] [Accepted: 07/07/2023] [Indexed: 01/05/2024] Open
Abstract
PURPOSE The correlation between the incidence of type 1 diabetes mellitus (T1DM) and tuberculosis or bacillus Calmette-Guérin (BCG) vaccination rate in individuals aged <15 years was investigated using worldwide data. METHODS The incidence of T1DM, rate of BCG vaccination, and incidence of tuberculosis were obtained from the Diabetes Atlas 9th edition of the International Diabetes Federation and the Global Health Observatory data repository of the World Health Organization. Gross domestic product (GDP) per capita and population data by country were obtained from the World Bank and United Nations, respectively. RESULTS GDP per capita negatively correlated with the incidence of tuberculosis and positively correlated with the incidence of T1DM (coefficient=-0.630 and 0.596, respectively; all P<0.001). The incidence of T1DM and tuberculosis was significantly associated with the Organisation for Economic Cooperation and Development (OECD) status (P<0.001). After adjusting for GDP per capita, regional grouping, and OECD status, the incidence of T1DM negatively correlated with that of tuberculosis (R2 =0.729, P=0.009). However, there was no association between the BCG vaccination rate and incidence of T1DM (P=0.890). CONCLUSION There was a negative correlation between the incidence of tuberculosis and T1DM in children and adolescents aged <15 years at the country level.
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Affiliation(s)
- Ji Young Park
- Department of Pediatrics, Chung-Ang University Hospital, Seoul, Korea
| | - Young June Choe
- Department of Pediatrics, Korea University Anam Hospital, Seoul, Korea
| | - Yaeji Lim
- Department of Applied Statistics, Chung-Ang University, Seoul, Korea
| | - Hyunsung Kim
- Department of Applied Statistics, Chung-Ang University, Seoul, Korea
| | - Jaehyun Kim
- Department of Pediatrics, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
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Saleh SAA, Shawky H, Ezzat A, Taie HAA, Salama B, El-Bassyouni GT, El Awdan SA, Awad GEA, Hashem AM, Esawy MA, Abdel Wahab WA. Prebiotic-mediated gastroprotective potentials of three bacterial levans through NF-κB-modulation and upregulation of systemic IL-17A. Int J Biol Macromol 2023; 250:126278. [PMID: 37572818 DOI: 10.1016/j.ijbiomac.2023.126278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Revised: 08/07/2023] [Accepted: 08/09/2023] [Indexed: 08/14/2023]
Abstract
This study aimed to investigate whether the gastroprotective effects of three types of bacterial levans are correlated with their prebiotic-associated anti-inflammatory/antioxidant potentials. Three levans designated as LevAE, LevP, and LevZ were prepared from bacterial honey isolates; purified, and characterized using TLC, NMR, and FTIR. The anti-inflammatory properties of levan preparations were assessed in LPS-stimulated RAW 264.7 cell lines, while their safety and gastroprotective potentials were assessed in Wistar rats. The three levans significantly reduced ulcer number (22.29-70.05 %) and severity (31.76-80.54 %) in the ethanol-induced gastric ulcer model compared to the control (P < 0.0001/each), with the highest effect observed in LevAE and levZ (200 mg/each) (P < 0.0001). LevZ produced the highest levels of glutathione; catalase activity, and the lowest MDA levels (P = 0.0001/each). The highest anti-inflammatory activity was observed in LevAE and levZ in terms of higher inhibitory effect on IL-1β and TNF-α production (P < 0.0001 each); COX2, PGE2, and NF-κB gene expression. The three levan preparations also proved safe with no signs of toxicity, with anti-lipidemic properties as well as promising prebiotic activity that directly correlated with their antiulcer effect. This novel study highlights the implication of prebiotic-mediated systemic immunomodulation exhibited by bacterial levans that directly correlated with their gastroprotective activity.
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Affiliation(s)
- Shireen A A Saleh
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries and Drug Research Institute, National Research Centre, Dokki 12622, Cairo, Egypt
| | - Heba Shawky
- Therapeutic Chemistry Department, Pharmaceutical Industries and Drug Research Institute, National Research Centre, Dokki 12622, Cairo, Egypt
| | - Asmaa Ezzat
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries and Drug Research Institute, National Research Centre, Dokki 12622, Cairo, Egypt
| | - Hanan A A Taie
- Plant Biochemistry Department, Agriculture and Biological Research Institute, National Research Centre, Dokki 12622, Cairo, Egypt
| | - Bassem Salama
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries and Drug Research Institute, National Research Centre, Dokki 12622, Cairo, Egypt
| | - Gehan T El-Bassyouni
- Refractories, Ceramics and Building Materials Department, Advanced Materials Technology and Mineral Resources Research Institute, National Research Centre, Dokki 12622, Cairo, Egypt
| | - Sally A El Awdan
- Pharmacology Department, Medical Research Institute, National Research Centre, Dokki 12622, Cairo, Egypt
| | - Ghada E A Awad
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries and Drug Research Institute, National Research Centre, Dokki 12622, Cairo, Egypt
| | - Amal M Hashem
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries and Drug Research Institute, National Research Centre, Dokki 12622, Cairo, Egypt
| | - Mona A Esawy
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries and Drug Research Institute, National Research Centre, Dokki 12622, Cairo, Egypt.
| | - Walaa A Abdel Wahab
- Chemistry of Natural and Microbial Products Department, Pharmaceutical Industries and Drug Research Institute, National Research Centre, Dokki 12622, Cairo, Egypt
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Co DO, Hogan LH, Karman J, Herbath M, Fabry Z, Sandor M. T Cell Interactions in Mycobacterial Granulomas: Non-Specific T Cells Regulate Mycobacteria-Specific T Cells in Granulomatous Lesions. Cells 2021; 10:cells10123285. [PMID: 34943793 PMCID: PMC8699651 DOI: 10.3390/cells10123285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 11/16/2021] [Accepted: 11/20/2021] [Indexed: 11/16/2022] Open
Abstract
Infections with pathogenic mycobacteria are controlled by the formation of a unique structure known as a granuloma. The granuloma represents a host–pathogen interface where bacteria are killed and confined by the host response, but also where bacteria persist. Previous work has demonstrated that the T cell repertoire is heterogenous even at the single granuloma level. However, further work using pigeon cytochrome C (PCC) epitope-tagged BCG (PCC-BCG) and PCC-specific 5CC7 RAG−/− TCR transgenic (Tg) mice has demonstrated that a monoclonal T cell population is able to control infection. At the chronic stage of infection, granuloma-infiltrating T cells remain highly activated in wild-type mice, while T cells in the monoclonal T cell mice are anergic. We hypothesized that addition of an acutely activated non-specific T cell to the monoclonal T cell system could recapitulate the wild-type phenotype. Here we report that activated non-specific T cells have access to the granuloma and deliver a set of cytokines and chemokines to the lesions. Strikingly, non-specific T cells rescue BCG-specific T cells from anergy and enhance the function of BCG-specific T cells in the granuloma in the chronic phase of infection when bacterial antigen load is low. In addition, we find that these same non-specific T cells have an inhibitory effect on systemic BCG-specific T cells. Taken together, these data suggest that T cells non-specific for granuloma-inducing agents can alter the function of granuloma-specific T cells and have important roles in mycobacterial immunity and other granulomatous disorders.
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Affiliation(s)
- Dominic O. Co
- Department of Pediatrics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA;
| | - Laura H. Hogan
- The Institute for Clinical and Translational Research, University of Wisconsin-Madison, Madison, WI 53705, USA;
| | - Jozsef Karman
- Cambridge Research Center, Abbvie, Inc., Cambridge, MA 02139, USA;
| | - Melinda Herbath
- Department of Pathology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA; (M.H.); (Z.F.)
| | - Zsuzsanna Fabry
- Department of Pathology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA; (M.H.); (Z.F.)
| | - Matyas Sandor
- Department of Pathology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA; (M.H.); (Z.F.)
- Correspondence: ; Tel.: +1-(608)-265-8715
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Quattrin T, Haller MJ, Steck AK, Felner EI, Li Y, Xia Y, Leu JH, Zoka R, Hedrick JA, Rigby MR, Vercruysse F. Golimumab and Beta-Cell Function in Youth with New-Onset Type 1 Diabetes. N Engl J Med 2020; 383:2007-2017. [PMID: 33207093 DOI: 10.1056/nejmoa2006136] [Citation(s) in RCA: 114] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Type 1 diabetes is an autoimmune disease characterized by progressive loss of pancreatic beta cells. Golimumab is a human monoclonal antibody specific for tumor necrosis factor α that has already been approved for the treatment of several autoimmune conditions in adults and children. Whether golimumab could preserve beta-cell function in youth with newly diagnosed overt (stage 3) type 1 diabetes is unknown. METHODS In this phase 2, multicenter, placebo-controlled, double-blind, parallel-group trial, we randomly assigned, in a 2:1 ratio, children and young adults (age range, 6 to 21 years) with newly diagnosed overt type 1 diabetes to receive subcutaneous golimumab or placebo for 52 weeks. The primary end point was endogenous insulin production, as assessed according to the area under the concentration-time curve for C-peptide level in response to a 4-hour mixed-meal tolerance test (4-hour C-peptide AUC) at week 52. Secondary and additional end points included insulin use, the glycated hemoglobin level, the number of hypoglycemic events, the ratio of fasting proinsulin to C-peptide over time, and response profile. RESULTS A total of 84 participants underwent randomization - 56 were assigned to the golimumab group and 28 to the placebo group. The mean (±SD) 4-hour C-peptide AUC at week 52 differed significantly between the golimumab group and the placebo group (0.64±0.42 pmol per milliliter vs. 0.43±0.39 pmol per milliliter, P<0.001). A treat-to-target approach led to good glycemic control in both groups, and there was no significant difference between the groups in glycated hemoglobin level. Insulin use was lower with golimumab than with placebo. A partial-remission response (defined as an insulin dose-adjusted glycated hemoglobin level score [calculated as the glycated hemoglobin level plus 4 times the insulin dose] of ≤9) was observed in 43% of participants in the golimumab group and in 7% of those in the placebo group (difference, 36 percentage points; 95% CI, 22 to 55). The mean number of hypoglycemic events did not differ between the trial groups. Hypoglycemic events that were recorded as adverse events at the discretion of investigators were reported in 13 participants (23%) in the golimumab group and in 2 (7%) of those in the placebo group. Antibodies to golimumab were detected in 30 participants who received the drug; 29 had antibody titers lower than 1:1000, of whom 12 had positive results for neutralizing antibodies. CONCLUSIONS Among children and young adults with newly diagnosed overt type 1 diabetes, golimumab resulted in better endogenous insulin production and less exogenous insulin use than placebo. (Funded by Janssen Research and Development; T1GER ClinicalTrials.gov number, NCT02846545.).
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Affiliation(s)
- Teresa Quattrin
- From the Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, and Diabetes Center, John R. Oishei Children's Hospital, Buffalo, NY (T.Q.); the Department of Pediatrics, University of Florida, Gainesville (M.J.H.); the Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora (A.K.S.); the Division of Pediatric Endocrinology, Emory University School of Medicine, Atlanta (E.I.F.); Janssen Research and Development, Spring House (Y.L., Y.X., J.H.L.) and Horsham (R.Z., J.A.H., M.R.R.) - both in Pennsylvania; and Janssen Research and Development, Beerse, Belgium (F.V.)
| | - Michael J Haller
- From the Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, and Diabetes Center, John R. Oishei Children's Hospital, Buffalo, NY (T.Q.); the Department of Pediatrics, University of Florida, Gainesville (M.J.H.); the Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora (A.K.S.); the Division of Pediatric Endocrinology, Emory University School of Medicine, Atlanta (E.I.F.); Janssen Research and Development, Spring House (Y.L., Y.X., J.H.L.) and Horsham (R.Z., J.A.H., M.R.R.) - both in Pennsylvania; and Janssen Research and Development, Beerse, Belgium (F.V.)
| | - Andrea K Steck
- From the Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, and Diabetes Center, John R. Oishei Children's Hospital, Buffalo, NY (T.Q.); the Department of Pediatrics, University of Florida, Gainesville (M.J.H.); the Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora (A.K.S.); the Division of Pediatric Endocrinology, Emory University School of Medicine, Atlanta (E.I.F.); Janssen Research and Development, Spring House (Y.L., Y.X., J.H.L.) and Horsham (R.Z., J.A.H., M.R.R.) - both in Pennsylvania; and Janssen Research and Development, Beerse, Belgium (F.V.)
| | - Eric I Felner
- From the Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, and Diabetes Center, John R. Oishei Children's Hospital, Buffalo, NY (T.Q.); the Department of Pediatrics, University of Florida, Gainesville (M.J.H.); the Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora (A.K.S.); the Division of Pediatric Endocrinology, Emory University School of Medicine, Atlanta (E.I.F.); Janssen Research and Development, Spring House (Y.L., Y.X., J.H.L.) and Horsham (R.Z., J.A.H., M.R.R.) - both in Pennsylvania; and Janssen Research and Development, Beerse, Belgium (F.V.)
| | - Yinglei Li
- From the Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, and Diabetes Center, John R. Oishei Children's Hospital, Buffalo, NY (T.Q.); the Department of Pediatrics, University of Florida, Gainesville (M.J.H.); the Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora (A.K.S.); the Division of Pediatric Endocrinology, Emory University School of Medicine, Atlanta (E.I.F.); Janssen Research and Development, Spring House (Y.L., Y.X., J.H.L.) and Horsham (R.Z., J.A.H., M.R.R.) - both in Pennsylvania; and Janssen Research and Development, Beerse, Belgium (F.V.)
| | - Yichuan Xia
- From the Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, and Diabetes Center, John R. Oishei Children's Hospital, Buffalo, NY (T.Q.); the Department of Pediatrics, University of Florida, Gainesville (M.J.H.); the Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora (A.K.S.); the Division of Pediatric Endocrinology, Emory University School of Medicine, Atlanta (E.I.F.); Janssen Research and Development, Spring House (Y.L., Y.X., J.H.L.) and Horsham (R.Z., J.A.H., M.R.R.) - both in Pennsylvania; and Janssen Research and Development, Beerse, Belgium (F.V.)
| | - Jocelyn H Leu
- From the Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, and Diabetes Center, John R. Oishei Children's Hospital, Buffalo, NY (T.Q.); the Department of Pediatrics, University of Florida, Gainesville (M.J.H.); the Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora (A.K.S.); the Division of Pediatric Endocrinology, Emory University School of Medicine, Atlanta (E.I.F.); Janssen Research and Development, Spring House (Y.L., Y.X., J.H.L.) and Horsham (R.Z., J.A.H., M.R.R.) - both in Pennsylvania; and Janssen Research and Development, Beerse, Belgium (F.V.)
| | - Ramineh Zoka
- From the Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, and Diabetes Center, John R. Oishei Children's Hospital, Buffalo, NY (T.Q.); the Department of Pediatrics, University of Florida, Gainesville (M.J.H.); the Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora (A.K.S.); the Division of Pediatric Endocrinology, Emory University School of Medicine, Atlanta (E.I.F.); Janssen Research and Development, Spring House (Y.L., Y.X., J.H.L.) and Horsham (R.Z., J.A.H., M.R.R.) - both in Pennsylvania; and Janssen Research and Development, Beerse, Belgium (F.V.)
| | - Joseph A Hedrick
- From the Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, and Diabetes Center, John R. Oishei Children's Hospital, Buffalo, NY (T.Q.); the Department of Pediatrics, University of Florida, Gainesville (M.J.H.); the Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora (A.K.S.); the Division of Pediatric Endocrinology, Emory University School of Medicine, Atlanta (E.I.F.); Janssen Research and Development, Spring House (Y.L., Y.X., J.H.L.) and Horsham (R.Z., J.A.H., M.R.R.) - both in Pennsylvania; and Janssen Research and Development, Beerse, Belgium (F.V.)
| | - Mark R Rigby
- From the Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, and Diabetes Center, John R. Oishei Children's Hospital, Buffalo, NY (T.Q.); the Department of Pediatrics, University of Florida, Gainesville (M.J.H.); the Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora (A.K.S.); the Division of Pediatric Endocrinology, Emory University School of Medicine, Atlanta (E.I.F.); Janssen Research and Development, Spring House (Y.L., Y.X., J.H.L.) and Horsham (R.Z., J.A.H., M.R.R.) - both in Pennsylvania; and Janssen Research and Development, Beerse, Belgium (F.V.)
| | - Frank Vercruysse
- From the Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, and Diabetes Center, John R. Oishei Children's Hospital, Buffalo, NY (T.Q.); the Department of Pediatrics, University of Florida, Gainesville (M.J.H.); the Barbara Davis Center for Diabetes, University of Colorado Anschutz Medical Campus, Aurora (A.K.S.); the Division of Pediatric Endocrinology, Emory University School of Medicine, Atlanta (E.I.F.); Janssen Research and Development, Spring House (Y.L., Y.X., J.H.L.) and Horsham (R.Z., J.A.H., M.R.R.) - both in Pennsylvania; and Janssen Research and Development, Beerse, Belgium (F.V.)
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Gundala NKV, Das UN. Arachidonic acid-rich ARASCO oil has anti-inflammatory and antidiabetic actions against streptozotocin + high fat diet induced diabetes mellitus in Wistar rats. Nutrition 2019; 66:203-218. [PMID: 31310962 DOI: 10.1016/j.nut.2019.05.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 05/10/2019] [Accepted: 05/27/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVES The aim of this study was to investigate the effects of arachidonic acid (AA)-rich ARASCO oil on high-fat diet (HFD) + streptozotocin (STZ)-induced diabetes mellitus in male Wistar rats and its possible mechanisms of action. METHODS Male Wistar rats with HFD + STZ-induced diabetes were employed in the present study. ARASCO oil was administered orally for the first 7 d consecutively, followed by once weekly throughout the study (14 wk). At various time points, blood glucose and body weight and oral glucose tolerance tests were measured. At the end of the study, animals were sacrificed to collect plasma and various organs and stored at -80°C. Plasma insulin, tumor necrosis factor-α, interleukin-6, and lipoxin A4 were measured. Expression of the following genes was determined: nuclear factor-κΒ (NF-κB), cyclooxygenase-2 (COX-2), 12-lipoxygenase (12-LOX) in pancreas and lipocalin 2 (LPCLN2) in adipose tissue. Various antioxidants were measured in the plasma and other tissues. Area under the curve and insulin sensitivity index were assessed by computing homeostatic model of assessment for insulin resistance, quantitative insulin check index, Matsuda, and Belfiore indices. RESULTS ARASCO oil treatment decreased hyperglycemia, restored insulin sensitivity, suppressed inflammation, enhanced plasma lipoxin A4 levels, and reversed altered antioxidant status to near normal in animals with HFD + STZ-induced diabetes. CONCLUSION These results suggest that ARASCO, a rich source of AA, can prevent HFD + STZ-induced diabetes in Wistar rats owing to its anti-inflammatory action. It remains to be seen whether ARASCO oil is useful in preventing or postponing the development of type 2 diabetes mellitus in humans.
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Affiliation(s)
- Naveen K V Gundala
- BioScience Research Centre, GVP College of Engineering Campus and Department of Medicine, Gayatri Vidya Parishad Hospital, Visakhapatnam, India
| | - Undurti N Das
- BioScience Research Centre, GVP College of Engineering Campus and Department of Medicine, Gayatri Vidya Parishad Hospital, Visakhapatnam, India; UND Life Sciences, Battle Ground, Washington, USA.
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A New Venue of TNF Targeting. Int J Mol Sci 2018; 19:ijms19051442. [PMID: 29751683 PMCID: PMC5983675 DOI: 10.3390/ijms19051442] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2018] [Revised: 04/25/2018] [Accepted: 05/03/2018] [Indexed: 12/20/2022] Open
Abstract
The first Food and Drug Administration-(FDA)-approved drugs were small, chemically-manufactured and highly active molecules with possible off-target effects, followed by protein-based medicines such as antibodies. Conventional antibodies bind a specific protein and are becoming increasingly important in the therapeutic landscape. A very prominent class of biologicals are the anti-tumor necrosis factor (TNF) drugs that are applied in several inflammatory diseases that are characterized by dysregulated TNF levels. Marketing of TNF inhibitors revolutionized the treatment of diseases such as Crohn’s disease. However, these inhibitors also have undesired effects, some of them directly associated with the inherent nature of this drug class, whereas others are linked with their mechanism of action, being pan-TNF inhibition. The effects of TNF can diverge at the level of TNF format or receptor, and we discuss the consequences of this in sepsis, autoimmunity and neurodegeneration. Recently, researchers tried to design drugs with reduced side effects. These include molecules with more specificity targeting one specific TNF format or receptor, or that neutralize TNF in specific cells. Alternatively, TNF-directed biologicals without the typical antibody structure are manufactured. Here, we review the complications related to the use of conventional TNF inhibitors, together with the anti-TNF alternatives and the benefits of selective approaches in different diseases.
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Kaminitz A, Ash S, Askenasy N. Neutralization Versus Reinforcement of Proinflammatory Cytokines to Arrest Autoimmunity in Type 1 Diabetes. Clin Rev Allergy Immunol 2018; 52:460-472. [PMID: 27677500 DOI: 10.1007/s12016-016-8587-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
As physiological pathways of intercellular communication produced by all cells, cytokines are involved in the pathogenesis of inflammatory insulitis as well as pivotal mediators of immune homeostasis. Proinflammatory cytokines including interleukins, interferons, transforming growth factor-β, tumor necrosis factor-α, and nitric oxide promote destructive insulitis in type 1 diabetes through amplification of the autoimmune reaction, direct toxicity to β-cells, and sensitization of islets to apoptosis. The concept that neutralization of cytokines may be of therapeutic benefit has been tested in few clinical studies, which fell short of inducing sustained remission or achieving disease arrest. Therapeutic failure is explained by the redundant activities of individual cytokines and their combinations, which are rather dispensable in the process of destructive insulitis because other cytolytic pathways efficiently compensate their deficiency. Proinflammatory cytokines are less redundant in regulation of the inflammatory reaction, displaying protective effects through restriction of effector cell activity, reinforcement of suppressor cell function, and participation in islet recovery from injury. Our analysis suggests that the role of cytokines in immune homeostasis overrides their contribution to β-cell death and may be used as potent immunomodulatory agents for therapeutic purposes rather than neutralized.
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Affiliation(s)
- Ayelet Kaminitz
- The Leah and Edward M. Frankel Laboratory of Experimental Bone Marrow Transplantation, 14 Kaplan Street, Petach Tikva, Israel, 49202
| | - Shifra Ash
- The Leah and Edward M. Frankel Laboratory of Experimental Bone Marrow Transplantation, 14 Kaplan Street, Petach Tikva, Israel, 49202
| | - Nadir Askenasy
- The Leah and Edward M. Frankel Laboratory of Experimental Bone Marrow Transplantation, 14 Kaplan Street, Petach Tikva, Israel, 49202.
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Gwon SY, Rhee KJ, Sung HJ. Gene and Protein Expression Profiles in a Mouse Model of Collagen-Induced Arthritis. Int J Med Sci 2018; 15:77-85. [PMID: 29333090 PMCID: PMC5765742 DOI: 10.7150/ijms.22345] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Accepted: 10/12/2017] [Indexed: 12/13/2022] Open
Abstract
The risk of rheumatoid arthritis (RA), an autoimmune disease, in the elderly population increases along with that of atherosclerosis, cardiovascular disease, type 2 diabetes, and Alzheimer's disease. Identifying specific biomarkers for RA can clarify the underlying molecular mechanisms and can aid diagnosis and patient care. To this end, the present study investigated the genes and proteins that are differentially expressed in RA using a mouse collagen-induced arthritis (CIA) model. We performed gene microarray and proteome array analyses using blood samples from the mice and found that 50 genes and 24 proteins were upregulated and 48 genes were downregulated by more than 2-fold in the CIA model relative to the control. The gene microarray and proteome array results were validated by evaluating the expression levels of select genes and proteins by real-time PCR and western blotting, respectively. We found that the level of integrin α2, which has not been previously reported as a biomarker of RA, was significantly increased in CIA mice as compared to controls. These findings provide a set of novel biomarkers that can be useful for diagnosing and evaluating the progression of RA.
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Affiliation(s)
- Sun-Yeong Gwon
- Department of Biomedical Laboratory Science, College of Health Science, Eulji University, Seongnam-si, Gyeonggi-do, 13135, Republic of Korea.,Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University at Wonju, Wonju, Gangwon-do 26493, Republic of Korea
| | - Ki-Jong Rhee
- Department of Biomedical Laboratory Science, College of Health Sciences, Yonsei University at Wonju, Wonju, Gangwon-do 26493, Republic of Korea
| | - Ho Joong Sung
- Department of Biomedical Laboratory Science, College of Health Science, Eulji University, Seongnam-si, Gyeonggi-do, 13135, Republic of Korea.,Department of Senior Healthcare, BK21 plus Program, Graduated School, Eulji University, Daejeon, 34824, Republic of Korea
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Fenske RJ, Cadena MT, Harenda QE, Wienkes HN, Carbajal K, Schaid MD, Laundre E, Brill AL, Truchan NA, Brar H, Wisinski J, Cai J, Graham TE, Engin F, Kimple ME. The Inhibitory G Protein α-Subunit, Gαz, Promotes Type 1 Diabetes-Like Pathophysiology in NOD Mice. Endocrinology 2017; 158:1645-1658. [PMID: 28419211 PMCID: PMC5460933 DOI: 10.1210/en.2016-1700] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 04/11/2017] [Indexed: 01/23/2023]
Abstract
The α-subunit of the heterotrimeric Gz protein, Gαz, promotes β-cell death and inhibits β-cell replication when pancreatic islets are challenged by stressors. Thus, we hypothesized that loss of Gαz protein would preserve functional β-cell mass in the nonobese diabetic (NOD) model, protecting from overt diabetes. We saw that protection from diabetes was robust and durable up to 35 weeks of age in Gαz knockout mice. By 17 weeks of age, Gαz-null NOD mice had significantly higher diabetes-free survival than wild-type littermates. Islets from these mice had reduced markers of proinflammatory immune cell infiltration on both the histological and transcript levels and secreted more insulin in response to glucose. Further analyses of pancreas sections revealed significantly fewer terminal deoxynucleotidyltransferase-mediated dUTP nick end labeling (TUNEL)-positive β-cells in Gαz-null islets despite similar immune infiltration in control mice. Islets from Gαz-null mice also exhibited a higher percentage of Ki-67-positive β-cells, a measure of proliferation, even in the presence of immune infiltration. Finally, β-cell-specific Gαz-null mice phenocopy whole-body Gαz-null mice in their protection from developing hyperglycemia after streptozotocin administration, supporting a β-cell-centric role for Gαz in diabetes pathophysiology. We propose that Gαz plays a key role in β-cell signaling that becomes dysfunctional in the type 1 diabetes setting, accelerating the death of β-cells, which promotes further accumulation of immune cells in the pancreatic islets, and inhibiting a restorative proliferative response.
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MESH Headings
- Animals
- Apoptosis/genetics
- Blood Glucose/metabolism
- Diabetes Mellitus, Experimental/genetics
- Diabetes Mellitus, Experimental/metabolism
- Diabetes Mellitus, Experimental/pathology
- Diabetes Mellitus, Type 1/genetics
- Diabetes Mellitus, Type 1/metabolism
- Diabetes Mellitus, Type 1/pathology
- Female
- GTP-Binding Protein alpha Subunits/genetics
- Insulin-Secreting Cells/metabolism
- Insulin-Secreting Cells/physiology
- Male
- Mice
- Mice, Inbred C57BL
- Mice, Inbred NOD
- Mice, Knockout
- Mice, Transgenic
- Streptozocin
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Affiliation(s)
- Rachel J. Fenske
- Interdisciplinary Graduate Program in Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin 53705
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin 53705
| | - Mark T. Cadena
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin 53705
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - Quincy E. Harenda
- Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - Haley N. Wienkes
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin 53705
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - Kathryn Carbajal
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin 53705
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - Michael D. Schaid
- Interdisciplinary Graduate Program in Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin 53705
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin 53705
| | - Erin Laundre
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin 53705
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - Allison L. Brill
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin 53705
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - Nathan A. Truchan
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin 53705
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - Harpreet Brar
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin 53705
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - Jaclyn Wisinski
- Interdisciplinary Graduate Program in Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin 53705
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin 53705
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - Jinjin Cai
- Molecular Medicine Program, Department of Medicine, Division of Endocrinology, Metabolism, and Diabetes, Department of Nutrition, and Department of Biological Chemistry, University of Utah School of Medicine, Salt Lake City, Utah 84112
- George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah 84112
| | - Timothy E. Graham
- Molecular Medicine Program, Department of Medicine, Division of Endocrinology, Metabolism, and Diabetes, Department of Nutrition, and Department of Biological Chemistry, University of Utah School of Medicine, Salt Lake City, Utah 84112
- George E. Wahlen Department of Veterans Affairs Medical Center, Salt Lake City, Utah 84112
| | - Feyza Engin
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin 53705
- Department of Biomolecular Chemistry, University of Wisconsin-Madison, Madison, Wisconsin 53705
| | - Michelle E. Kimple
- Interdisciplinary Graduate Program in Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin 53705
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin 53705
- Department of Medicine, Division of Endocrinology, Diabetes and Metabolism, University of Wisconsin-Madison, Madison, Wisconsin 53705
- Department of Cell and Regenerative Biology, University of Wisconsin-Madison, Madison, Wisconsin 53705
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10
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Yolcu ES, Shirwan H, Askenasy N. Fas/Fas-Ligand Interaction As a Mechanism of Immune Homeostasis and β-Cell Cytotoxicity: Enforcement Rather Than Neutralization for Treatment of Type 1 Diabetes. Front Immunol 2017; 8:342. [PMID: 28396667 PMCID: PMC5366321 DOI: 10.3389/fimmu.2017.00342] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 03/09/2017] [Indexed: 12/22/2022] Open
Affiliation(s)
- Esma S Yolcu
- Department of Microbiology and Immunology, Institute for Cellular Therapeutics, University of Louisville , Louisville, KY , USA
| | - Haval Shirwan
- Department of Microbiology and Immunology, Institute for Cellular Therapeutics, University of Louisville , Louisville, KY , USA
| | - Nadir Askenasy
- Frankel Laboratory of Experimental Bone Marrow Transplantation , Petach Tikva , Israel
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11
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Vujicic M, Nikolic I, Kontogianni VG, Saksida T, Charisiadis P, Vasic B, Stosic-Grujicic S, Gerothanassis IP, Tzakos AG, Stojanovic I. Ethyl Acetate Extract of Origanum vulgare L. ssp. hirtum Prevents Streptozotocin-Induced Diabetes in C57BL/6 Mice. J Food Sci 2016; 81:H1846-53. [PMID: 27219840 DOI: 10.1111/1750-3841.13333] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 04/06/2016] [Accepted: 04/14/2016] [Indexed: 12/20/2022]
Abstract
Type 1 diabetes (T1D) is an autoimmune disease that develops as a consequence of pancreatic β-cell death induced by proinflammatory mediators. Because Origanum vulgare L. ssp. hirtum (Greek oregano) contains antiinflammatory molecules, we hypothesized that it might be beneficial for the treatment of T1D. An ethyl acetate extract of oregano (EAO) was prepared from the leaves by a polar extraction method. Phytochemical composition was determined by liquid chromatography-UV diode array coupled to ion-trap mass spectrometry with electrospray ionization interface (LC/DAD/ESI-MS(n) ). In vitro immunomodulatory effect of EAO was estimated by measuring proliferation (MTT) or cytokine secretion (ELISA) from immune cells. Diabetes was induced by multiple low doses of streptozotocin (MLDS) in male C57BL/6 mice and EAO was administered intraperitoneally for 10 d. Determination of cellular composition (flow cytometry) and cytokine production (ELISA) was performed on 12th d after diabetes induction. EAO suppressed the function of both macrophages and lymphocytes in vitro. In vivo, EAO treatment significantly preserved pancreatic islets and reduced diabetes incidence in MLDS-challenged mice. Besides down-modulatory effect on macrophages, EAO reduced the number of total CD4(+) and activated CD4(+) CD25(+) T cells. Furthermore, EAO affected the number of T helper 1 (Th1) and T helper 17 (Th17) cells through downregulation of their key transcription factors T-bet and RORγT. Because EAO treatment protects mice from development of hyperglycemia by reducing proinflammatory macrophage/Th1/Th17 response, this plant extract could represent a basis for future diabetes therapy.
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Affiliation(s)
- Milica Vujicic
- Dept. of Immunology, Inst. for Biological Research "Sinisa Stankovic,", Univ. of Belgrade, 11060, Belgrade, Serbia
| | - Ivana Nikolic
- Dept. of Immunology, Inst. for Biological Research "Sinisa Stankovic,", Univ. of Belgrade, 11060, Belgrade, Serbia
| | - Vassiliki G Kontogianni
- Dept. of Chemistry, Section of Organic Chemistry and Biochemistry, Univ. of Ioannina, GR-45110, Ioannina, Greece
| | - Tamara Saksida
- Dept. of Immunology, Inst. for Biological Research "Sinisa Stankovic,", Univ. of Belgrade, 11060, Belgrade, Serbia
| | - Pantelis Charisiadis
- Dept. of Chemistry, Section of Organic Chemistry and Biochemistry, Univ. of Ioannina, GR-45110, Ioannina, Greece
| | - Bobana Vasic
- Dept. of Immunology, Inst. for Biological Research "Sinisa Stankovic,", Univ. of Belgrade, 11060, Belgrade, Serbia
| | - Stanislava Stosic-Grujicic
- Dept. of Immunology, Inst. for Biological Research "Sinisa Stankovic,", Univ. of Belgrade, 11060, Belgrade, Serbia
| | - Ioannis P Gerothanassis
- Dept. of Chemistry, Section of Organic Chemistry and Biochemistry, Univ. of Ioannina, GR-45110, Ioannina, Greece
| | - Andreas G Tzakos
- Dept. of Chemistry, Section of Organic Chemistry and Biochemistry, Univ. of Ioannina, GR-45110, Ioannina, Greece
| | - Ivana Stojanovic
- Dept. of Immunology, Inst. for Biological Research "Sinisa Stankovic,", Univ. of Belgrade, 11060, Belgrade, Serbia
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12
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Berchtold LA, Prause M, Størling J, Mandrup-Poulsen T. Cytokines and Pancreatic β-Cell Apoptosis. Adv Clin Chem 2016; 75:99-158. [PMID: 27346618 DOI: 10.1016/bs.acc.2016.02.001] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The discovery 30 years ago that inflammatory cytokines cause a concentration, activity, and time-dependent bimodal response in pancreatic β-cell function and viability has been a game-changer in the fields of research directed at understanding inflammatory regulation of β-cell function and survival and the causes of β-cell failure and destruction in diabetes. Having until then been confined to the use of pathophysiologically irrelevant β-cell toxic chemicals as a model of β-cell death, researchers could now mimic endocrine and paracrine effects of the cytokine response in vitro by titrating concentrations in the low to the high picomolar-femtomolar range and vary exposure time for up to 14-16h to reproduce the acute regulatory effects of systemic inflammation on β-cell secretory responses, with a shift to inhibition at high picomolar concentrations or more than 16h of exposure to illustrate adverse effects of local, chronic islet inflammation. Since then, numerous studies have clarified how these bimodal responses depend on discrete signaling pathways. Most interest has been devoted to the proapoptotic response dependent upon mainly nuclear factor κ B and mitogen-activated protein kinase activation, leading to gene expressional changes, endoplasmic reticulum stress, and triggering of mitochondrial dysfunction. Preclinical studies have shown preventive effects of cytokine antagonism in animal models of diabetes, and clinical trials demonstrating proof of concept are emerging. The full clinical potential of anticytokine therapies has yet to be shown by testing the incremental effects of appropriate dosing, timing, and combinations of treatments. Due to the considerable translational importance of enhancing the precision, specificity, and safety of antiinflammatory treatments of diabetes, we review here the cellular, preclinical, and clinical evidence of which of the death pathways recently proposed in the Nomenclature Committee on Cell Death 2012 Recommendations are activated by inflammatory cytokines in the pancreatic β-cell to guide the identification of antidiabetic targets. Although there are still scarce human data, the cellular and preclinical studies point to the caspase-dependent intrinsic apoptosis pathway as the prime effector of inflammatory β-cell apoptosis.
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Affiliation(s)
| | - M Prause
- University of Copenhagen, Copenhagen, Denmark
| | - J Størling
- Copenhagen Diabetes Research Center, Beta Cell Biology Group, Copenhagen University Hospital Herlev, Herlev, Denmark
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13
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Karumuthil-Melethil S, Sofi MH, Gudi R, Johnson BM, Perez N, Vasu C. TLR2- and Dectin 1-associated innate immune response modulates T-cell response to pancreatic β-cell antigen and prevents type 1 diabetes. Diabetes 2015; 64:1341-57. [PMID: 25377877 PMCID: PMC4375080 DOI: 10.2337/db14-1145] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
The progression of autoimmune diseases is dictated by deviations in the fine balance between proinflammatory versus regulatory responses, and pathogen recognition receptors (PRRs) play a key role in maintaining this balance. Previously, we have reported that ligation of Toll-like receptor 2 (TLR2) and Dectin 1 on antigen-presenting cells by zymosan results in a regulatory immune response that prevents type 1 diabetes (T1D). Here, we show that TLR2 and Dectin 1 engagement by zymosan promotes regulatory T-cell (Treg) responses against the pancreatic β-cell-specific antigen (Ag). Unlike the TLR4 ligand, bacterial lipopolysaccharide, which induced proinflammatory cytokines and pathogenic T cells, zymosan induced a mixture of pro- and anti-inflammatory factors and Tregs, both in vitro and in vivo. Ag-specific T cells that are activated using zymosan-exposed dendritic cells (DCs) expressed Foxp3 and produced large amounts of IL-10, TGF-β1, and IL-17. NOD mice that received β-cell-Ag-loaded, zymosan-exposed DCs showed delayed hyperglycemia. Injection of NOD mice at the prediabetic age and early hyperglycemic stage with β-cell-Ag, along with zymosan, results in a superior protection of the NOD mice from diabetes as compared with mice that received zymosan alone. This therapeutic effect was associated with increased frequencies of IL-10-, IL-17-, IL-4-, and Foxp3-positive T cells, especially in the pancreatic lymph nodes. These results show that zymosan can be used as an immune regulatory adjuvant for modulating the T-cell response to pancreatic β-cell-Ag and reversing early-stage hyperglycemia in T1D.
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Affiliation(s)
| | - M Hanief Sofi
- Department of Microbiology and Immunology, College of Medicine, Medical University of South Carolina, Charleston, SC
| | - Radhika Gudi
- Department of Surgery, College of Medicine, Medical University of South Carolina, Charleston, SC
| | - Benjamin M Johnson
- Department of Microbiology and Immunology, College of Medicine, Medical University of South Carolina, Charleston, SC
| | - Nicolas Perez
- Department of Surgery, University of Illinois at Chicago, Chicago, IL
| | - Chenthamarakshan Vasu
- Department of Microbiology and Immunology, College of Medicine, Medical University of South Carolina, Charleston, SC Department of Surgery, College of Medicine, Medical University of South Carolina, Charleston, SC
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14
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Salama A, Fichou N, Allard M, Dubreil L, De Beaurepaire L, Viel A, Jégou D, Bösch S, Bach JM. MicroRNA-29b modulates innate and antigen-specific immune responses in mouse models of autoimmunity. PLoS One 2014; 9:e106153. [PMID: 25203514 PMCID: PMC4159199 DOI: 10.1371/journal.pone.0106153] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 08/02/2014] [Indexed: 12/19/2022] Open
Abstract
In addition to important regulatory roles in gene expression through RNA interference, it has recently been shown that microRNAs display immune stimulatory effects through direct interaction with receptors of innate immunity of the Toll-like receptor family, aggravating neuronal damage and tumour growth. Yet no evidence exists on consequences of microRNA immune stimulatory actions in the context of an autoimmune disease. Using microRNA analogues, we here show that pancreatic beta cell-derived microRNA sequences induce pro-inflammatory (TNFa, IFNa, IL-12, IL-6) or suppressive (IL-10) cytokine secretion by primary mouse dendritic cells in a sequence-dependent manner. For miR-29b, immune stimulation in RAW264.7 macrophages involved the endosomal Toll-like receptor-7, independently of the canonical RNA interference pathway. In vivo, the systemic delivery of miR-29b activates CD11b+B220- myeloid and CD11b-B220+ plasmacytoid dendritic cells and induces IFNa, TNFa and IL-6 production in the serum of recipient mice. Strikingly, in a murine model of adoptive transfer of autoimmune diabetes, miR-29b reduces the cytolytic activity of transferred effector CD8+ T-cells, insulitis and disease incidence in a single standalone intervention. Endogenous miR-29b, spontaneously released from beta-cells within exosomes, stimulates TNFa secretion from spleen cells isolated from diabetes-prone NOD mice in vitro. Hence, microRNA sequences modulate innate and ongoing adaptive immune responses raising the question of their potential role in the breakdown of tolerance and opening up new applications for microRNA-based immune therapy.
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Affiliation(s)
- Apolline Salama
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
| | - Nolwenn Fichou
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
| | - Marie Allard
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
| | - Laurence Dubreil
- INRA, Nantes, France
- LUNAM Université, Oniris, UMR_A0703 PanTHER, Nantes, France
| | | | - Alexis Viel
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
| | - Dominique Jégou
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
| | - Steffi Bösch
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
| | - Jean-Marie Bach
- LUNAM Université, Oniris, EA 4644 IECM, Nantes, France
- INRA, Nantes, France
- * E-mail:
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15
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Burke SJ, Lu D, Sparer TE, Karlstad MD, Collier JJ. Transcription of the gene encoding TNF-α is increased by IL-1β in rat and human islets and β-cell lines. Mol Immunol 2014; 62:54-62. [PMID: 24972324 DOI: 10.1016/j.molimm.2014.05.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 05/08/2014] [Accepted: 05/24/2014] [Indexed: 11/28/2022]
Abstract
Synthesis and secretion of immunomodulatory proteins, such as cytokines and chemokines, controls the inflammatory response within pancreatic islets. When this inflammation does not resolve, destruction of pancreatic islet β-cells leads to diabetes mellitus. Production of the soluble mediators of inflammation, such as TNF-α and IL-1β, from resident and invading immune cells, as well as directly from islet β-cells, is also associated with suboptimal islet transplantation outcomes. In this study, we found that IL-1β induces rapid increases in TNF-α mRNA in rat and human islets and the 832/13 clonal β-cell line. The surge in transcription of the TNF-α gene required the inhibitor of kappa B kinase beta (IκKβ), the p65 subunit of the NF-κB and a signal-specific recruitment of RNA polymerase II to the gene promoter. Of note was the increased intracellular production of TNF-α protein in a manner consistent with mRNA accumulation in response to IL-1β, but no detectable secretion of TNF-α into the media. Additionally, TNF-α specifically induces expression of CD11b, but not CD11c, on neutrophils, which could contribute to the inflammatory milieu and diabetes progression. We conclude that activation of the NF-κB pathway in pancreatic β-cells leads to rapid intracellular production of the pro-inflammatory TNF-α protein through a combination of specific histone covalent modifications and NF-κB signaling pathways.
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Affiliation(s)
- Susan J Burke
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, LA 70808, United States
| | - Danhong Lu
- Sarah W. Stedman Nutrition and Metabolism Center, Duke University Medical Center, Durham, NC 27704, United States
| | - Tim E Sparer
- Department of Microbiology, University of Tennessee, Knoxville, TN 37996, United States
| | - Michael D Karlstad
- Department of Surgery, Graduate School of Medicine, University of Tennessee Medical Center, Knoxville, TN 37920, United States
| | - J Jason Collier
- Laboratory of Islet Biology and Inflammation, Pennington Biomedical Research Center, Baton Rouge, LA 70808, United States.
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16
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Bazzaz JT, Amoli MM, Taheri Z, Larijani B, Pravica V, Hutchinson IV. TNF-α and IFN-γ gene variation and genetic susceptibility to type 1 diabetes and its microangiopathic complications. J Diabetes Metab Disord 2014; 13:46. [PMID: 24693923 PMCID: PMC4000155 DOI: 10.1186/2251-6581-13-46] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Accepted: 03/11/2014] [Indexed: 12/28/2022]
Abstract
Background TNF-α has accelerating role in development of type 1 diabetes. Although an immunosupressor function and leading protecting role in T1DM also has been claimed for this pro-inflammatory cytokine. Over-expression of pro-inflammatory and type 1 cytokines (Th1, like IFN-γ) drive insulitis toward the destructive form that leads to type 1 diabetes (T1DM). Among type 1 cytokines only IFN-γ has been detectable in the islet β cells. In deletion studies IFN-γ was also the only Th1 cytokine for which its ablation or blockade caused delayed or decreased incidence of T1DM. Methods Functional polymorphisms of TNF-α at position -308*G/A and at position +874*T/A of IFN-γ gene were employed as markers and the comparative distribution of derived genotypes/alleles were assessed in 248 British Caucasian T1DM patients and 118 healthy controls. Results There was no significant association between IFN-γ gene polymorphism and T1DM or the diabetic complication triad. There was a marginal association between TNF-α –308*G/A polymorphism in nephropaths (vs healthy controls) (p = 0.06), which its insignificancy may be due to survivor factor. No significant association was evident between the genotype/allele of the applied marker and T1DM or diabetic complication triad. Conclusion Our results are in contrast with previous reports suggesting that these polymorphisms are not related to T1DM. This study also underlines the importance of replication of association studies to confirm the previous interpretation.
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Affiliation(s)
- Javad Tavakkoly Bazzaz
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahsa M Amoli
- Endocrinology and Metabolism Research Centre, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Taheri
- Endocrinology and Metabolism Research Centre, Tehran University of Medical Sciences, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Centre, Tehran University of Medical Sciences, Tehran, Iran
| | - Vera Pravica
- School of Pharmacy, University of Southern California (USC), Los Angeles, USA
| | - Ian V Hutchinson
- School of Pharmacy, University of Southern California (USC), Los Angeles, USA
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17
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Tayer-Shifman OE, Ilan O, Tovi H, Tal Y. Cogan's Syndrome—Clinical Guidelines and Novel Therapeutic Approaches. Clin Rev Allergy Immunol 2014; 47:65-72. [DOI: 10.1007/s12016-013-8406-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Faustman DL, Wang L, Okubo Y, Burger D, Ban L, Man G, Zheng H, Schoenfeld D, Pompei R, Avruch J, Nathan DM. Proof-of-concept, randomized, controlled clinical trial of Bacillus-Calmette-Guerin for treatment of long-term type 1 diabetes. PLoS One 2012; 7:e41756. [PMID: 22905105 PMCID: PMC3414482 DOI: 10.1371/journal.pone.0041756] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Accepted: 06/25/2012] [Indexed: 12/17/2022] Open
Abstract
Background No targeted immunotherapies reverse type 1 diabetes in humans. However, in a rodent model of type 1 diabetes, Bacillus Calmette-Guerin (BCG) reverses disease by restoring insulin secretion. Specifically, it stimulates innate immunity by inducing the host to produce tumor necrosis factor (TNF), which, in turn, kills disease-causing autoimmune cells and restores pancreatic beta-cell function through regeneration. Methodology/Principal Findings Translating these findings to humans, we administered BCG, a generic vaccine, in a proof-of-principle, double-blind, placebo-controlled trial of adults with long-term type 1 diabetes (mean: 15.3 years) at one clinical center in North America. Six subjects were randomly assigned to BCG or placebo and compared to self, healthy paired controls (n = 6) or reference subjects with (n = 57) or without (n = 16) type 1 diabetes, depending upon the outcome measure. We monitored weekly blood samples for 20 weeks for insulin-autoreactive T cells, regulatory T cells (Tregs), glutamic acid decarboxylase (GAD) and other autoantibodies, and C-peptide, a marker of insulin secretion. BCG-treated patients and one placebo-treated patient who, after enrollment, unexpectedly developed acute Epstein-Barr virus infection, a known TNF inducer, exclusively showed increases in dead insulin-autoreactive T cells and induction of Tregs. C-peptide levels (pmol/L) significantly rose transiently in two BCG-treated subjects (means: 3.49 pmol/L [95% CI 2.95–3.8], 2.57 [95% CI 1.65–3.49]) and the EBV-infected subject (3.16 [95% CI 2.54–3.69]) vs.1.65 [95% CI 1.55–3.2] in reference diabetic subjects. BCG-treated subjects each had more than 50% of their C-peptide values above the 95th percentile of the reference subjects. The EBV-infected subject had 18% of C-peptide values above this level. Conclusions/Significance We conclude that BCG treatment or EBV infection transiently modified the autoimmunity that underlies type 1 diabetes by stimulating the host innate immune response. This suggests that BCG or other stimulators of host innate immunity may have value in the treatment of long-term diabetes. Trial Registration ClinicalTrials.gov NCT00607230
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Affiliation(s)
- Denise L Faustman
- The Immunobiology Laboratory, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America.
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19
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Bettini M, Castellaw AH, Lennon GP, Burton AR, Vignali DA. Prevention of autoimmune diabetes by ectopic pancreatic β-cell expression of interleukin-35. Diabetes 2012; 61:1519-26. [PMID: 22427377 PMCID: PMC3357277 DOI: 10.2337/db11-0784] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Interleukin (IL)-35 is a newly identified inhibitory cytokine used by T regulatory cells to control T cell-driven immune responses. However, the therapeutic potential of native, biologically active IL-35 has not been fully examined. Expression of the heterodimeric IL-35 cytokine was targeted to β-cells via the rat insulin promoter (RIP) II. Autoimmune diabetes, insulitis, and the infiltrating cellular populations were analyzed. Ectopic expression of IL-35 by pancreatic β-cells led to substantial, long-term protection against autoimmune diabetes, despite limited intraislet IL-35 secretion. Nonobese diabetic RIP-IL35 transgenic mice exhibited decreased islet infiltration with substantial reductions in the number of CD4(+) and CD8(+) T cells, and frequency of glucose-6-phosphatase catalytic subunit-related protein-specific CD8(+) T cells. Although there were limited alterations in cytokine expression, the reduced T-cell numbers observed coincided with diminished T-cell proliferation and G1 arrest, hallmarks of IL-35 biological activity. These data present a proof of principle that IL-35 could be used as a potent inhibitor of autoimmune diabetes and implicate its potential therapeutic utility in the treatment of type 1 diabetes.
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Pancreatic islet expression of chemokine CCL2 suppresses autoimmune diabetes via tolerogenic CD11c+ CD11b+ dendritic cells. Proc Natl Acad Sci U S A 2012; 109:3457-62. [PMID: 22328150 DOI: 10.1073/pnas.1115308109] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Development of type 1 diabetes in the nonobese diabetic (NOD) mouse is preceded by an immune cell infiltrate in the pancreatic islets. The exact role of the attracted cells is still poorly understood. Chemokine CCL2/MCP-1 is known to attract CCR2(+) monocytes and dendritic cells (DCs). We have previously shown that transgenic expression of CCL2 in pancreatic islets via the rat insulin promoter induces nondestructive insulitis on a nonautoimmune background. We report here an unexpected reduction of diabetes development on the NOD background despite an increased islet cell infiltrate with markedly increased numbers of CD11c(+) CD11b(+) DCs. These DCs exhibited a hypoactive phenotype with low CD40, MHC II, CD80/CD86 expression, and reduced TNF-α but elevated IL-10 secretions. They failed to induce proliferation of diabetogenic CD4(+) T cells in vitro. Pancreatic lymph node CD4(+) T cells were down-regulated ex vivo and expressed the anergy marker Grail. By using an in vivo transfer system, we show that CD11c(+) CD11b(+) DCs from rat insulin promoter-CCL2 transgenic NOD mice were the most potent cells suppressing diabetes development. These findings support an unexpected beneficial role for CCL2 in type 1 diabetes with implications for current strategies interfering with the CCL2/CCR2 axis in humans, and for dendritic cell biology in autoimmunity.
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Makhoul M, Bruyns C, Edimo WE, Relvas LJ, Bazewicz M, Koch P, Caspers L, Willermain F. TNFα suppresses IFNγ-induced MHC class II expression on retinal pigmented epithelial cells cultures. Acta Ophthalmol 2012; 90:e38-42. [PMID: 21957872 DOI: 10.1111/j.1755-3768.2011.02241.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
PURPOSE One major consequence of retinal pigment epithelium (RPE) cell activation during autoimmune uveitis is the induction of MHC II molecules expression at their surface. IFNγ is regarded as the main cytokine involved in this induction. As TNFα plays a central role in autoimmune uveitis, we investigated its effects on IFNγ-mediated MHC II induction on RPE cells. METHODS Retinal pigment epithelium cells (ARPE-19) were stimulated with IFNγ, TNFα and the anti-TNFα antibody infliximab. The expression of MHCII and ICAM-1 was analysed by flow cytometry. The activation and expression of IRF-1 and STAT-1, two proteins involved in IFNγ-signalling pathway, were analysed by WB. Class II transactivator (CIITA) expression was monitored by qRT-PCR and immunoprecipitation. RESULTS TNFα inhibits IFNγ-induced MHC II expression on ARPE cells in a dose-dependent manner. Infliximab completely reverses the inhibitory effect of TNFα. We did not observe an inhibitory effect of TNFα on the expression of ICAM-1 induced by IFNγ. Similarly, IFNγ-induced STAT1 phosphorylation and IRF1 expression were not affected by TNFα. On the contrary, we found that TNFα suppresses IFNγ-induced CIITA mRNA accumulation and protein expression. CONCLUSION TNFα inhibits IFNγ-induced MHC II expression in RPE cells. This inhibitory effect was reversed by infliximab and was not because of a global inhibition of IFNγ -mediated RPE cell activation but rather to a specific down-regulation of CIITA expression. Those findings are consistent with the role of TNFα in the resolution of inflammation and might help to elucidate the complex development of autoimmune uveitis.
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Affiliation(s)
- Maya Makhoul
- IRIBHM (Institute of Interdisciplinary Research), Université Libre De Bruxelles-Campus Erasme, Brussels, Belgium.
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Chou FC, Huang SH, Sytwu HK. Genetically engineered islets and alternative sources of insulin-producing cells for treating autoimmune diabetes: quo vadis? Int J Endocrinol 2012; 2012:296485. [PMID: 22690214 PMCID: PMC3368364 DOI: 10.1155/2012/296485] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2011] [Accepted: 03/29/2012] [Indexed: 01/29/2023] Open
Abstract
Islet transplantation is a promising therapy for patients with type 1 diabetes that can provide moment-to-moment metabolic control of glucose and allow them to achieve insulin independence. However, two major problems need to be overcome: (1) detrimental immune responses, including inflammation induced by the islet isolation/transplantation procedure, recurrence autoimmunity, and allorejection, can cause graft loss and (2) inadequate numbers of organ donors. Several gene therapy approaches and pharmaceutical treatments have been demonstrated to prolong the survival of pancreatic islet grafts in animal models; however, the clinical applications need to be investigated further. In addition, for an alternative source of pancreatic β-cell replacement therapy, the ex vivo generation of insulin-secreting cells from diverse origins of stem/progenitor cells has become an attractive option in regenerative medicine. This paper focuses on the genetic manipulation of islets during transplantation therapy and summarizes current strategies to obtain functional insulin-secreting cells from stem/progenitor cells.
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Affiliation(s)
- Feng-Cheng Chou
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Neihu, Taipei 114, Taiwan
| | - Shing-Hwa Huang
- Department of General Surgery, Tri-Service General Hospital, Taipei 114, Taiwan
| | - Huey-Kang Sytwu
- Department and Graduate Institute of Microbiology and Immunology, National Defense Medical Center, Neihu, Taipei 114, Taiwan
- *Huey-Kang Sytwu:
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Van Hauwermeiren F, Vandenbroucke RE, Libert C. Treatment of TNF mediated diseases by selective inhibition of soluble TNF or TNFR1. Cytokine Growth Factor Rev 2011; 22:311-9. [PMID: 21962830 DOI: 10.1016/j.cytogfr.2011.09.004] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The TNF signaling pathway is a valuable target in the therapy of autoimmune diseases, and anti-TNF drugs are successfully used to treat diseases such as rheumatoid arthritis, Crohn's disease and psoriasis. By their ability to interfere with inflammatory processes at multiple levels, these TNF blockers have become invaluable tools to inhibit the inflammation induced damage and allow recovery of the affected tissues. Unfortunately this therapy has some drawbacks, including increased risk of infection and malignancy, and remarkably, the onset of new auto-immune diseases. Some of these effects are caused by the unwanted abrogation of beneficial TNF signaling. More specific targeting of the pathological TNF-induced signaling might lead to broader applicability and improved safety. Specificity might be increased by inhibiting the soluble TNF/TNFR1 axis while leaving the often beneficial transmembrane TNF/TNFR2 signaling untouched. This approach looks promising because it inhibits the pathological effects of TNF and reduces the side effects, and it opens the way for the treatment of other diseases in which TNFR2 inhibition is detrimental. In this review we give an overview of in vivo mouse studies of TNF mediated pathologies demonstrating that the blockade or genetic deletion of sTNF or TNFR1 is preferable over total TNF blockade.
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Chen X, Oppenheim JJ. Contrasting effects of TNF and anti-TNF on the activation of effector T cells and regulatory T cells in autoimmunity. FEBS Lett 2011; 585:3611-8. [PMID: 21513711 DOI: 10.1016/j.febslet.2011.04.025] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Revised: 04/08/2011] [Accepted: 04/12/2011] [Indexed: 12/23/2022]
Abstract
Anti-TNF treatment is effective in a majority of rheumatoid arthritis (RA), however, this treatment can unexpectedly trigger the onset or exacerbate multiple sclerosis (MS). Recent progress in cellular immunology research provides a new framework to analyze the possible mechanism underlying these puzzling contradictory effects. The delicate balance of protective CD4(+)FoxP3(+) regulatory T cells (Tregs) and pathogenic CD4(+)FoxP3(-) effector T cells (Teffs) is crucial for the outcome of anti-TNF treatment of autoimmune disease. There is convincing evidence that TNF, in addition to stimulating Teffs, is able to activate and expand Tregs through TNFR2, which is preferentially expressed by Tregs. Therefore, the contrasting effects of TNF on Tregs and Teffs are likely to determine the therapeutic effect of anti-TNF treatment. In this review, we discuss the current understanding of the general effect of TNF on the activation of T cells, and the impact of TNF on the function of Teffs and Tregs. Understanding the differential effects of TNF on Teffs and Tregs is fundamentally required for the design of more effective and safer anti-TNF or anti-TNF receptor(s) therapeutic strategy for autoimmune diseases.
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Affiliation(s)
- Xin Chen
- Basic Science Program, SAIC-Frederick, Inc., Laboratory of Molecular Immunoregulation, NCI-Frederick, Frederick, MD 21702, USA
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25
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Lawrence MC, Naziruddin B, Levy MF, Jackson A, McGlynn K. Calcineurin/nuclear factor of activated T cells and MAPK signaling induce TNF-{alpha} gene expression in pancreatic islet endocrine cells. J Biol Chem 2010; 286:1025-36. [PMID: 21059644 DOI: 10.1074/jbc.m110.158675] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Cytokines contribute to pancreatic islet inflammation, leading to impaired glucose homeostasis and diabetic diseases. A plethora of data shows that proinflammatory cytokines are produced in pancreatic islets by infiltrating mononuclear immune cells. Here, we show that pancreatic islet α cells and β cells express tumor necrosis factor-α (TNF-α) and other cytokines capable of promoting islet inflammation when exposed to interleukin-1β (IL-1β). Cytokine expression by β cells was dependent on calcineurin (CN)/nuclear factor of activated T cells (NFAT) and MAPK signaling. NFAT associated with the TNF-α promoter in response to stimuli and synergistically activated promoter activity with ATF2 and c-Jun. In contrast, the β-cell-specific transcriptional activator MafA could repress NFAT-mediated TNF-α gene expression whenever C/EBP-β was bound to the promoter. NFAT differentially regulated the TNF-α gene depending upon the expression and MAPK-dependent activation of interacting basic leucine zipper partners in β cells. Both p38 and JNK were required for induction of TNF-α mRNA and protein expression. Collectively, the data show that glucose and IL-1β can activate signaling pathways, which control induction and repression of cytokines in pancreatic endocrine cells. Thus, by these mechanisms, pancreatic β cells themselves may contribute to islet inflammation and their own immunological destruction in the pathogenesis of diabetes.
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Affiliation(s)
- Michael C Lawrence
- Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.
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26
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Faustman D, Davis M. TNF receptor 2 pathway: drug target for autoimmune diseases. Nat Rev Drug Discov 2010; 9:482-93. [PMID: 20489699 DOI: 10.1038/nrd3030] [Citation(s) in RCA: 312] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Although drug development has advanced for autoimmune diseases, many current therapies are hampered by adverse effects and the frequent destruction or inactivation of healthy cells in addition to pathological cells. Targeted autoimmune therapies capable of eradicating the rare autoreactive immune cells that are responsible for the attack on the body's own cells are yet to be identified. This Review presents a new emerging approach aimed at selectively destroying autoreactive immune cells by specific activation of tumour necrosis factor receptor 2 (TNFR2), which is found on autoreactive and normal T lymphocytes, with the potential of avoiding or reducing the toxicity observed with existing therapies.
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Affiliation(s)
- Denise Faustman
- Immunobiology Laboratory, Room 3602, Building 149, Massachusetts General Hospital and Harvard Medical School, 13th Street, Charlestown, Massachusetts 02129, USA.
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27
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TNFRI is a positive T-cell costimulatory molecule important for the timing of cytokine responses. Immunol Cell Biol 2010; 88:586-95. [PMID: 20212506 DOI: 10.1038/icb.2010.12] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Tumor necrosis factor (TNF)- and TNF receptor I (TNFRI)-deficient mice are resistant to initiation and show delayed resolution of disease in paradigms of autoimmune disease, but the contribution of TNF/TNFRI signaling to T-cell activation and effector responses has not been determined. In this study, we investigated the role of TNFRI in T-cell receptor (TCR)-mediated T-cell activation in vitro and in vivo using CD3(+)-enriched primary T cells and mice deficient in TNFRI. Following TCR engagement, TNFRI knockout (KO) T cells showed significantly delayed proliferation, cell division, upregulation of interleukin 2 (IL-2) and IL-2 receptor alpha chain (CD25) mRNA and cell-surface expression of CD25 compared with wild-type (WT) cells. Thus, WT and TNFRI KO cells showed equivalent proliferation peaks at 48 and 72 h, respectively. TNFRI KO mice also developed a defective primary T-cell response to ovalbumin and an acute contact hypersensitivity response to oxazolone (4-ethoxymethylene-2-phenyl-2-oxazolin-5-one). However, TNFRI KO splenocytes that were stimulated by TCR engagement in vitro for 96 h produced significantly higher intracellular levels of interferon-gamma (IFN-gamma), IL-2 and TNF-alpha, but not IL-17, compared with WT cells, in correlation with their relatively higher proliferation rate at this time point. Further, TCR-stimulated CD3(+)-enriched TNFRI KO T cells showed similarly higher production and secretion of IFN-gamma and IL-2 compared with WT, suggesting that TNFRI-mediated cytokine regulation might involve a T-cell autonomous effect. Our results show a novel role for TNFRI as a positive T-cell costimulatory molecule that is important for timely T-cell activation and effector cytokine production and the development of primary immune responses in mice.
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Chen X, Oppenheim JJ. TNF-alpha: an activator of CD4+FoxP3+TNFR2+ regulatory T cells. CURRENT DIRECTIONS IN AUTOIMMUNITY 2010; 11:119-34. [PMID: 20173391 DOI: 10.1159/000289201] [Citation(s) in RCA: 89] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
TNF-alpha (TNF) is a pleiotropic cytokine which can have proinflammatory or immunosuppressive effects, depending on the context, duration of exposure and disease state. The basis for the opposing actions of TNF remains elusive. The growing appreciation of CD4+FoxP3+ regulatory T cells (Tregs), which comprise approximately 10% of peripheral CD4 cells, as pivotal regulators of immune responses has provided a new framework to define the cellular and molecular basis underlying the contrasting action of TNF. TNF by itself can overcome the profound anergic state of T cell receptor-stimulated Tregs. Furthermore, in concert with IL-2, TNF selectively activates Tregs, resulting in proliferation, upregulation of FoxP3 expression and increases in their suppressive activity. Both human and mouse Tregs predominantly express TNFR2, making it possible for TNF to enhance Treg activity, which helps limit the collateral damage caused by excessive immune responses and eventually terminates immune response. TNFR2-expressing CD4+FoxP3+ Tregs comprise approximately 40% of peripheral Tregs in normal mice and present the maximally suppressive subset of Tregs. In this review, studies describing the action of TNF on Treg function will be discussed. The role of Tregs in the autoimmune disorders and cancer as well as the effect of anti-TNF therapy on Tregs, especially in rheumatoid arthritis, will also be considered.
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Affiliation(s)
- Xin Chen
- Basic Science Program, SAIC-Frederick, Inc., National Cancer Institute-Frederick, MD 21702, USA.
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29
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Müller S, Rihs S, Dayer Schneider JM, Paredes BE, Seibold I, Brunner T, Mueller C. Soluble TNF-α but not transmembrane TNF-α sensitizes T cells for enhanced activation-induced cell death. Eur J Immunol 2009; 39:3171-80. [DOI: 10.1002/eji.200939554] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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30
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Dirice E, Sanlioglu AD, Kahraman S, Ozturk S, Balci MK, Omer A, Griffith TS, Sanlioglu S. Adenovirus-Mediated TRAIL Gene (Ad5hTRAIL) Delivery into Pancreatic Islets Prolongs Normoglycemia in Streptozotocin-Induced Diabetic Rats. Hum Gene Ther 2009; 20:1177-89. [DOI: 10.1089/hum.2009.039] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Ercument Dirice
- Human Gene Therapy Division, Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Ahter Dilsad Sanlioglu
- Human Gene Therapy Division, Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Sevim Kahraman
- Human Gene Therapy Division, Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
- Department of Medical Biology and Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Saffet Ozturk
- Department of Histology and Embryology, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Mustafa Kemal Balci
- Division of Endocrinology and Metabolic Diseases, Department of Medicine, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
| | - Abdulkadir Omer
- Section on Islet Transplantation and Cell Biology, Joslin Diabetes Center, Harvard Medical School, Boston, MA 02215, U.S.A
| | | | - Salih Sanlioglu
- Human Gene Therapy Division, Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
- Department of Medical Genetics, Faculty of Medicine, Akdeniz University, Antalya 07070, Turkey
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Ke Y, Jiang G, Sun D, Kaplan HJ, Shao H. Retinal Astrocytes respond to IL-17 differently than Retinal Pigment Epithelial cells. J Leukoc Biol 2009; 86:1377-84. [PMID: 19690291 DOI: 10.1189/jlb.0409237] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
IL-17+ T cells make up the majority of the infiltrating cells in the inflamed eye during the development of EAU. However, the role of IL-17 in ocular inflammation is poorly defined. Given that the primary target cells for IL-17 are parenchymal cells of the tissue, we investigated the in vitro effect of IL-17 on mouse RACs and RPE cells. Our results showed that although RACs and RPE cells expressed the IL-17R, RACs responded to IL-17 by producing increased amounts of proinflammatory cytokines and chemokines, leading to increased migration of granulocytes, whereas RPE cells responded to the same concentration of IL-17 by expressing increased levels of SOCS proteins, resulting in only limited production of proinflammatory cytokines and chemokines and an increased amount of suppressive cytokines, such as LIF. The combination of IL-17 and IFN-gamma had a synergistic effect on cell migration with RACs but an antagonistic effect with RPE. In addition, specific inhibitors of the PI3K/Akt signaling pathway completely blocked inflammatory cell migration induced by chemokines released by IL-17-stimulated RACs. Our results demonstrate that IL-17 can induce a pro- or anti-inflammatory effect in the eye, depending on the parenchymal cells stimulated.
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Affiliation(s)
- Yan Ke
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, Louisville, Kentucky 40202, USA
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Ernandez T, Mayadas TN. Immunoregulatory role of TNFalpha in inflammatory kidney diseases. Kidney Int 2009; 76:262-76. [PMID: 19436333 DOI: 10.1038/ki.2009.142] [Citation(s) in RCA: 114] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Tumor necrosis factor alpha (TNFalpha), a pleiotropic cytokine, plays important inflammatory roles in renal diseases such as lupus nephritis, anti-neutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis and renal allograft rejection. However, TNFalpha also plays critical immunoregulatory roles that are required to maintain immune homeostasis. These complex biological functions of TNFalpha are orchestrated by its two receptors, TNFR1 and TNFR2. For example, TNFR2 promotes leukocyte infiltration and tissue injury in an animal model of immune complex-mediated glomerulonephritis. On the other hand, TNFR1 plays an immunoregulatory function in a murine lupus model with a deficiency in this receptor that leads to more severe autoimmune symptoms. In humans, proinflammatory and immunoregulatory roles for TNFalpha are strikingly illustrated in patients on anti-TNFalpha medications: These treatments are greatly beneficial in certain inflammatory diseases such as rheumatoid arthritis but, on the other hand, are also associated with the induction of autoimmune lupus-like syndromes and enhanced autoimmunity in multiple sclerosis patients. The indication for anti-TNFalpha treatments in renal inflammatory diseases is still under discussion. Ongoing clinical trials may help to clarify the potential benefit of such treatments in lupus nephritis and ANCA-associated glomerulonephritis. Overall, the complex biology of TNFalpha is not fully understood. A greater understanding of the function of its receptors may provide a framework to understand its contrasting proinflammatory and immunoregulatory functions. This may lead the development of new, more specific anti-inflammatory drugs.
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Affiliation(s)
- Thomas Ernandez
- Department of Pathology, Center for Excellence in Vascular Biology, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA.
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Jacob N, Yang H, Pricop L, Liu Y, Gao X, Zheng SG, Wang J, Gao HX, Putterman C, Koss MN, Stohl W, Jacob CO. Accelerated pathological and clinical nephritis in systemic lupus erythematosus-prone New Zealand Mixed 2328 mice doubly deficient in TNF receptor 1 and TNF receptor 2 via a Th17-associated pathway. THE JOURNAL OF IMMUNOLOGY 2009; 182:2532-41. [PMID: 19201910 DOI: 10.4049/jimmunol.0802948] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
TNF-alpha has both proinflammatory and immunoregulatory functions. Whereas a protective role for TNF administration in systemic lupus erythematosus (SLE)-prone (New Zealand Black x New Zealand White)F(1) mice has been established, it remains uncertain whether this effect segregates at the individual TNFR. We generated SLE-prone New Zealand Mixed 2328 mice genetically deficient in TNFR1, in TNFR2, or in both receptors. Doubly-deficient mice developed accelerated pathological and clinical nephritis with elevated levels of circulating IgG anti-dsDNA autoantibodies and increased numbers of CD4(+) T lymphocytes, especially activated memory (CD44(high)CD62L(low)) CD4(+) T cells. We show that these cells expressed a Th17 gene profile, were positive for IL-17 intracellular staining by FACS, and produced exogenous IL-17 in culture. In contrast, immunological, pathological, and clinical profiles of mice deficient in either TNFR alone did not differ from those in each other or from those in wild-type controls. Thus, total ablation of TNF-alpha-mediated signaling was highly deleterious to the host in the New Zealand Mixed 2328 SLE model. These observations may have profound ramifications for the use of TNF and TNFR antagonists in human SLE and related autoimmune disorders, as well as demonstrate, for the first time, the association of the Th17 pathway with an animal model of SLE.
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Affiliation(s)
- Noam Jacob
- Department of Medicine, University of Southern California Keck School of Medicine, Los Angeles, CA 90033, USA
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Ke Y, Liu K, Huang GQ, Cui Y, Kaplan HJ, Shao H, Sun D. Anti-inflammatory role of IL-17 in experimental autoimmune uveitis. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2009; 182:3183-90. [PMID: 19234216 PMCID: PMC3275433 DOI: 10.4049/jimmunol.0802487] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Previous studies have shown that IL-17 is a strong proinflammatory cytokine and that IL-17-producing autoreactive T cells play a major role in the pathogenesis of autoimmune diseases. In a previous study, we showed that injection of experimental autoimmune uveitis-susceptible mice with anti-IL-17 Abs blocked subsequent disease development. To determine whether administration of IL-17 to experimental autoimmune uveitis-susceptible Lewis rats and B10RIII mice injected with disease-inducing peptides enhanced disease susceptibility, we injected the recipient animals with various doses of human rIL-17 (hIL-17). Unexpectedly, the treated animals showed significant amelioration of disease; in addition, both the intensity of the autoreactive response and cytokine production by the autoreactive T cells induced by immunization with uveitogenic peptides were significantly decreased. Our results show that IL-17 has anti-inflammatory activity and that this cytokine can suppress the development of autoimmune disease.
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Affiliation(s)
- Yan Ke
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, KY 40202
| | - Ke Liu
- Southern Bio-Tech, Birmingham AL 35209
| | | | - Yan Cui
- Doheny Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033
| | - Henry J. Kaplan
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, KY 40202
| | - Hui Shao
- Department of Ophthalmology and Visual Sciences, Kentucky Lions Eye Center, University of Louisville, KY 40202
| | - Deming Sun
- Doheny Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033
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The chemokine-binding protein M3 as a tool to understand the chemokine network in vivo. Methods Enzymol 2009; 460:193-207. [PMID: 19446726 DOI: 10.1016/s0076-6879(09)05209-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Murine herpesvirus 68 (MHV-68) codes for a secreted chemokine-binding protein, termed M3, which interacts with a broad range of chemokines with very high affinity, inhibiting chemokine function both in vitro and in vivo. Here we describe the transgenic methodology used to study the role of M3 as an immune modulator in vivo.
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Selective death of autoreactive T cells in human diabetes by TNF or TNF receptor 2 agonism. Proc Natl Acad Sci U S A 2008; 105:13644-9. [PMID: 18755894 DOI: 10.1073/pnas.0803429105] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Human autoimmune (AI) diseases are difficult to treat, because immunosuppressive drugs are nonspecific, produce high levels of adverse effects, and are not based on mechanistic understanding of disease. Destroying the rare autoreactive T lymphocytes causing AI diseases would improve treatment. In animal models, TNF selectively kills autoreactive T cells, thereby hampering disease onset or progression. Here, we seek to determine, in fresh human blood, whether TNF or agonists of TNF selectively kill autoreactive T cells, while sparing normal T cells. We isolated highly pure CD4 or CD8 T cells from patients with type 1 diabetes (n = 675), other AI diseases, and healthy controls (n = 512). Using two cell death assays, we found that a subpopulation of CD8, but not CD4, T cells in patients' blood was vulnerable to TNF or TNF agonist-induced death. One agonist for the TNFR2 receptor exhibited a dose-response pattern of killing. In type 1 diabetes, the subpopulation of T cells susceptible to TNF or TNFR2 agonist-induced death was traced specifically to autoreactive T cells to insulin, a known autoantigen. Other activated and memory T cell populations were resistant to TNF-triggered death. This study shows that autoreactive T cells, although rare, can be selectively destroyed in isolated human blood. TNF and a TNFR2 agonist may offer highly targeted therapies, with the latter likely to be less systemically toxic.
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Kim EY, Moudgil KD. Regulation of autoimmune inflammation by pro-inflammatory cytokines. Immunol Lett 2008; 120:1-5. [PMID: 18694783 DOI: 10.1016/j.imlet.2008.07.008] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2008] [Revised: 07/12/2008] [Accepted: 07/12/2008] [Indexed: 12/14/2022]
Abstract
The pro-inflammatory cytokines play a critical role in the initiation and propagation of autoimmune arthritis and many other disorders resulting from a dysregulated self-directed immune response. These cytokines influence the interplay among the cellular, immunological and biochemical mediators of inflammation at multiple levels. Regulation of the pro-inflammatory activity of these cytokines is generally perceived to be mediated by the anti-inflammatory and immunosuppressive cytokines such as IL-4, IL-10, or TGF-beta. However, increasing evidence is accumulating in support of the regulatory attributes of the pro-inflammatory cytokines themselves, in studies conducted in animal models of diabetes, multiple sclerosis, uveitis, and lupus. The results of our recent studies have shown that the pro-inflammatory cytokines, TNF-alpha and IFN-gamma, can suppress arthritic inflammation in rats, and also contribute to resistance against arthritis. These results are of paramount significance not only in fully understanding the pathogenesis of autoimmune arthritis, but also in anticipating the full ramifications of the in vivo neutralization of the pro-inflammatory cytokines, including that for therapeutic purposes.
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Affiliation(s)
- Eugene Y Kim
- Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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Sakata M, Yasuda H, Moriyama H, Yamada K, Kotani R, Kurohara M, Okumachi Y, Kishi M, Arai T, Hara K, Hamada H, Yokono K, Nagata M. Prevention of recurrent but not spontaneous autoimmune diabetes by transplanted NOD islets adenovirally transduced with immunomodulating molecules. Diabetes Res Clin Pract 2008; 80:352-9. [PMID: 18400329 DOI: 10.1016/j.diabres.2008.01.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2007] [Accepted: 01/21/2008] [Indexed: 11/19/2022]
Abstract
Pancreatic islet transplantation has the potential to maintain normoglycemia in patients with established type 1 diabetes, thereby obviating the need for frequent insulin injections. Our previous study showed that recombinant IL-12p40-producing islets prevented the recurrence of NOD diabetes. First, to see which immunomodulating molecule-secreting islet grafts can most powerfully prevent diabetes development in NOD mice without immunosuppressant, NOD islets were transfected with one of the following adenoviral vectors: Ad.IL-12p40, Ad.TGF-beta, Ad.CTLA4-Ig, or Ad.TNF-alpha after which they were transplanted under the renal capsule of acutely diabetic NOD mice. The immunomodulating molecules produced by these adenovirus-transfected islets in vitro were 74+/-19ng, 50+/-4ng, 821+/-31ng, and 77+/-18ng/100 islets, respectively. Transplantation of IL-12p40, TNF-alpha, and CTLA4-Ig but not TGF-beta-secreting islets displayed enhanced survival and delayed diabetes recurrence in recent-onset diabetic recipients. IL-12p40-producing islet grafts most powerfully prevented recurrent diabetes in NOD mice. In addition, local production of TNF-alpha and CTLA4-Ig significantly prolonged islet graft survival. In second series of experiment, these manipulated islets were transplanted under the renal capsule of 10-week-old NOD recipients and were also transplanted subcutaneously into 2-week-old NOD recipients. Transplantation of these islets into 2- or 10-week-old pre-diabetic mice failed to protect them from developing diabetes; in fact, transplantation of Ad.TNF-alpha-transfected islets into 2-week-old mice actually accelerated diabetes onset. Taken together, this approach was ineffectual as a prophylactic protocol. In conclusion, this study showed comparisons of the immunomodulating effects of 4 different adenoviral vectors in the same transplantation model and local production of IL-12p40, TNF-alpha and CTLA4-Ig significantly prevented recurrent diabetes in NOD mice.
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Affiliation(s)
- Muneaki Sakata
- Department of Internal and Geriatric Medicine, Kobe University Graduate School of Medicine, 7-5-1 Kusunoki-cho, Chuo-ku, Kobe 650-0017, Japan
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Brodie GM, Wallberg M, Santamaria P, Wong FS, Green EA. B-cells promote intra-islet CD8+ cytotoxic T-cell survival to enhance type 1 diabetes. Diabetes 2008; 57:909-17. [PMID: 18184927 DOI: 10.2337/db07-1256] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE To determine the role of B-cells in promoting CD8(+) T-cell-mediated beta cell destruction in chronically inflamed islets. RESEARCH DESIGN AND METHODS-RIP: TNFalpha-NOD mice were crossed to B-cell-deficient NOD mice, and diabetes development was monitored. We used in vitro antigen presentation assays and in vivo administration of bromodeoxyuridine coupled to flow cytometry assays to assess intra-islet T-cell activation in the absence or presence of B-cells. CD4(+)Foxp3(+) activity in the absence or presence of B-cells was tested using in vivo depletion techniques. Cytokine production and apoptosis assays determined the capacity of CD8(+) T-cells transform to cytotoxic T-lymphocytes (CTLs) and survive within inflamed islets in the absence or presence of B-cells. RESULTS B-cell deficiency significantly delayed diabetes development in chronically inflamed islets. Reintroduction of B-cells incapable of secreting immunoglobulin restored diabetes development. Both CD4(+) and CD8(+) T-cell activation was unimpaired by B-cell deficiency, and delayed disease was not due to CD4(+)Foxp3(+) T-cell suppression of T-cell responses. Instead, at the CTL transition stage, B-cell deficiency resulted in apoptosis of intra-islet CTLs. CONCLUSIONS In inflamed islets, B-cells are central for the efficient intra-islet survival of CTLs, thereby promoting type 1 diabetes development.
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Affiliation(s)
- Gillian M Brodie
- Department of Pathology, Cambridge Institute for Medical Research, Addenbrooke's Hospital, Hills Road, Cambridge CB2 0XY, UK
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41
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Exogenous tumour necrosis factor alpha induces suppression of autoimmune arthritis. Arthritis Res Ther 2008; 10:R38. [PMID: 18380898 PMCID: PMC3386491 DOI: 10.1186/ar2393] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2008] [Revised: 03/12/2008] [Accepted: 04/01/2008] [Indexed: 11/10/2022] Open
Abstract
Introduction Our previous studies showed that arthritic Lewis (LEW) rats produced the highest levels of tumour necrosis factor (TNF)α in the recovery phase of adjuvant arthritis (AA), suggesting a correlation between high TNFα levels and reduced severity of arthritis. To further explore this correlation, we compared the TNFα secretion profile of the AA-resistant Wistar Kyoto (WKY) rats with that of LEW rats, determined the effect of exogenous TNFα on the course of AA in LEW rats, and examined various mechanisms involved in TNFα-induced disease modulation. Methods A cohort each of LEW and WKY rats was immunised subcutaneously with heat-killed Mycobacterium tuberculosis H37Ra (Mtb). At different time points thereafter, subgroups of rats were killed and their draining lymph node cells were tested for cytokine production. Another group of LEW rats was injected with TNFα intraperitoneally daily for a total of 10 injections, 3 before and 6 after Mtb challenge, and then observed for signs of AA. In parallel, TNFα-treated rats were examined for changes in other cytokines, in CD4+CD25+ T cell frequency, and in indoleamine 2,3-dioxygenase (IDO) mRNA expression levels. Results LEW rats displayed a TNFα secretion profile that was opposite to that of the WKY rats. Furthermore, TNFα treatment significantly downmodulated the severity of AA in LEW rats, and decreased the interferon (IFN)-γ secretion in response to the pathogenic determinant of the disease-related antigen. No significant alterations were observed in other parameters tested. Conclusion The role of endogenous TNFα in the induction and propagation of arthritis is well established. However, exogenous TNFα can downmodulate the course of AA, displaying an immunoregulatory functional attribute of this cytokine.
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Martin AP, Canasto-Chibuque C, Shang L, Rollins BJ, Lira SA. The chemokine decoy receptor M3 blocks CC chemokine ligand 2 and CXC chemokine ligand 13 function in vivo. THE JOURNAL OF IMMUNOLOGY 2007; 177:7296-302. [PMID: 17082648 DOI: 10.4049/jimmunol.177.10.7296] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Chemokines and their receptors play a key role in immune homeostasis regulating leukocyte migration, differentiation, and function. Viruses have acquired and optimized molecules that interact with the chemokine system. These virus-encoded molecules promote cell entry, facilitate dissemination of infected cells, and enable the virus to evade the immune response. One such molecule in the murine gammaherpesvirus 68 genome is the M3 gene, which encodes a secreted 44-kDa protein that binds with high affinity to certain murine and human chemokines and blocks chemokine signaling in vitro. To test the hypothesis that M3 directly interferes with diverse chemokines in vivo, we examined the interaction of M3 with CCL2 and CXCL13 expressed in the pancreas of transgenic mice. CCL2 expression in the pancreas promoted recruitment of monocytes and dendritic cells; CXCL13 promoted recruitment of B and T lymphocytes. Coexpression of M3 in the pancreas blocked cellular recruitment induced by both CCL2 and CXCL13. These results define M3 as multichemokine blocker and demonstrate its use as a powerful tool to analyze chemokine biology.
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Affiliation(s)
- Andrea P Martin
- Immunobiology Center, Mount Sinai School of Medicine, New York, NY 10029, USA
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Abstract
The Reg family of proteins has been studied in the context of growth and regeneration in several organs including pancreatic islets. We previously suggested that Reg proteins act as autoantigens in type 1 diabetes, based on evidence that a member of the Reg family (hepatocellular carcinoma intestine pancreas [HIP]/pancreatitis-associated protein [PAP]) was overexpressed in the islets of a patient who died after sudden onset of type 1 diabetes, and that, in NOD mice, Reg-specific T-cells adoptively transferred diabetes. In the current study, we developed antisera to detect individual Reg members in mouse islets and found that RegIIIalpha was present in the non-beta-cell portion of the islets, while RegII was predominantly expressed in beta-cells. Vaccination of NOD mice with the separately expressed N-terminal (NtfrII) or C-terminal (CtfrII) portion of RegII revealed a dichotomy: NtfrII vaccination accelerated and CtfrII vaccination delayed type 1 diabetes. Vaccination with CtfrII was more effective when given at later stages in the pathogenesis of type 1 diabetes, a time dependency different from that seen with other antigen-dependent vaccine strategies in NOD mice, which might have therapeutic implications. In conclusion, RegII is a novel beta-cell-derived autoantigen in NOD mice. The autoimmune response against this protein may convert a regenerative into an islet-destructive process accelerating development of type 1 diabetes.
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Affiliation(s)
- Werner Gurr
- Yale University School of Medicine, Section of Endocrinology, New Haven, CT 06520-8020, USA.
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Giarratana N, Penna G, Adorini L. Animal models of spontaneous autoimmune disease: type 1 diabetes in the nonobese diabetic mouse. Methods Mol Biol 2007; 380:285-311. [PMID: 17876100 DOI: 10.1007/978-1-59745-395-0_17] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The nonobese diabetic (NOD) mouse represents probably the best spontaneous model for a human autoimmune disease. It has provided not only essential information on type 1 diabetes (T1D) pathogenesis, but also valuable insights into mechanisms of immunoregulation and tolerance. Importantly, it allows testing of immunointervention strategies potentially applicable to man. The fact that T1D incidence in the NOD mouse is sensitive to environmental conditions, and responds, sometimes dramatically, to immunomanipulation, does not represent a limit of the model, but is likely to render it even more similar to its human counterpart. In both cases, macrophages, dendritic cells, CD4+, CD8+, and B cells are present in the diseased islets. T1D is a polygenic disease, but, both in human and in NOD mouse T1D, the primary susceptibility gene is located within the MHC. On the other hand, T1D incidence is significantly higher in NOD females, although insulitis is similar in both sexes, whereas in humans, T1D occurs with about equal frequency in males and females. In addition, NOD mice have a more widespread autoimmune disorder, which is not the case in the majority of human T1D cases. Despite these differences, the NOD mouse remains the most representative model of human T1D, with similarities also in the putative target autoantigens, including glutamic acid decarboxylase IA-2, and insulin.
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Parkash J, Chaudhry MA, Rhoten WB. Tumor necrosis factor-α-induced changes in insulin-producing β-cells. ACTA ACUST UNITED AC 2005; 286:982-93. [PMID: 16114068 DOI: 10.1002/ar.a.20229] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The migration of macrophages and lymphocytes that produce cytokines such as tumor necrosis factor-alpha (TNF-alpha) causes beta-cell death, leading to type 1 diabetes. Similarly, in type 2 diabetes, the adipocyte-derived cytokines including TNF-alpha are elevated in the circulation, causing inflammation and insulin resistance. Thus, the studies described in this article using TNF-alpha are relevant to furthering our understanding of the pathogenesis of diabetes mellitus. We used RINr1046-38 (RIN) insulin-producing beta-cells, which constitutively express calbindin-D(28k), to characterize the effect of TNF-alpha on apoptosis, replication, insulin release, and gene and protein expression. Western blots of TNF-alpha-treated RIN cells revealed a decrease in calbindin-D(28k). By ELISA, TNF-alpha-treated beta-cells had 47% less calbindin-D(28k) than controls. In association with the decline in calbindin-D(28k), TNF-alpha treatment of RIN cells led to a 73% greater increase in changes in intracellular calcium concentration (Delta[Ca(2+)](i)) in TNF-alpha-treated cells as compared to that in control RIN cells upon treatment with 50 mM KCl; caused a greater increase in the [Ca(2+)](i) following the addition of 5.5 microM ionomycin; increased by more than threefold the apoptotic rate, expressed as the percentage of TUNEL-positive nuclei to total nuclei; decreased the rate of cell replication by 36%; and increased and decreased selectively the expression of specific genes as determined by microarray analysis. The subcellular localizations of Bcl-2, an antiapoptotic protein, and Bax, a proapoptotic protein, within RIN cells were altered with TNF-alpha treatment such that the two were colocalized with mitochondria in the perinuclear region. We conclude that the proapoptotic action of TNF-alpha on beta-cells is manifested via decreased expression of calbindin-D(28k) and is mediated at least in part by [Ca(2+)](i).
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Affiliation(s)
- Jai Parkash
- Joan C. Edwards School of Medicine, Department of Anatomy, Cell and Neurobiology, Marshall University, Huntington, West Virginia 25704, USA.
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46
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Mueller RB, Skapenko A, Grunke M, Wendler J, Stuhlmuller B, Kalden JR, Schulze-Koops H. Regulation of myeloid cell function and major histocompatibility complex class II expression by tumor necrosis factor. ACTA ACUST UNITED AC 2005; 52:451-60. [PMID: 15692975 DOI: 10.1002/art.20863] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE Tumor necrosis factor (TNF)-neutralizing agents are the most successful means of ameliorating systemic autoimmune inflammation. Neutralization of TNF, however, is often associated with the development of autoantibodies, particularly to nuclear antigens, and the mechanisms of this are unknown. We undertook this study to analyze the effect of TNF and its neutralization on the expression of major histocompatibility complex class II molecules and on the function of antigen-presenting myeloid cells in rheumatoid arthritis (RA). METHODS Monocytes were isolated from the peripheral blood of RA patients before and after anti-TNF monoclonal antibody (mAb) treatment and from the peripheral blood of controls by negative selection, differentiated in vitro to macrophages, and analyzed by flow cytometry for HLA-DR expression. T cell responses to activation by myeloid cells were assessed in proliferation assays, and messenger RNA (mRNA) levels of the class II transactivator (CIITA) were determined by semiquantitative reverse transcriptase-polymerase chain reaction. RESULTS HLA-DR expression was significantly reduced on myeloid cells from RA patients with active disease, but was increased to normal levels after anti-TNF mAb treatment. Concordantly, in vitro application of TNF to monocytes from healthy individuals reduced their ability to up-regulate HLA-DR during differentiation to macrophages and, importantly, inhibited their ability to stimulate T cells in mixed lymphocyte reactions. Molecular analysis revealed that the effect of TNF on HLA-DR expression was mediated via suppression of the transcription factor CIITA. CONCLUSION The data indicate that TNF decreases HLA-DR expression by reducing CIITA mRNA levels in myeloid cells, functionally resulting in a decreased capacity of myeloid cells to stimulate T cells. Concordantly, ameliorating disease activity in chronic inflammatory diseases by neutralizing TNF restores expression of HLA-DR on myeloid cells as well as the ability of myeloid cells to stimulate T cells. Thus, anti-TNF treatment might lead to augmented T cell activation by myeloid cells, thereby promoting immune responses to (auto)antigens and the development of antinuclear antibodies that are frequently associated with anti-TNF therapy.
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Affiliation(s)
- Ruediger B Mueller
- Nikolaus Fiebiger Center for Molecular Medicine and Institute for Clinical Immunology, University of Erlangen-Nuremberg, Erlangen, Germany
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Mukherjee R, Chaturvedi P, Qin HY, Singh B. CD4+CD25+ regulatory T cells generated in response to insulin B:9-23 peptide prevent adoptive transfer of diabetes by diabetogenic T cells. J Autoimmun 2004; 21:221-37. [PMID: 14599847 DOI: 10.1016/s0896-8411(03)00114-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
NOD mice have a relative deficiency of CD4+CD25+ regulatory T cells that could result in an inability to maintain peripheral tolerance. The aim of this study was to induce the generation of CD4+CD25+ regulatory T cells in response to autoantigens to prevent type 1 diabetes (T1D). We found that immunization of NOD mice with insulin B-chain peptide B:9-23 followed by 72 h in vitro culture with B:9-23 peptide induces generation of CD4+CD25+ regulatory T cells. Route of immunization has a critical role in the generation of these cells. Non-autoimmune mice BALB/c, C57BL/6 and NOR did not show up regulation of CD4+CD25+ regulatory T cells. These cells secreted large amounts of TGF-beta and TNF-alpha with little or no IFN-gamma and IL-10. Adoptive transfer of these CD4+CD25+ regulatory T cells into NOD-SCID mice completely prevented the adoptive transfer of disease by diabetogenic T cells. Although, non-self antigenic OVA (323-339) peptide immunization and in vitro culture with OVA (323-339) peptide does result in up regulation of CD4+CD25+ T cells, these cells did not prevent transfer of diabetes. Our study for the first time identified the generation of antigen-specific CD4+CD25+ regulatory T cells specifically in response to immunization with B:9-23 peptide in NOD mice that are capable of blocking adoptive transfer of diabetes. Our results suggest the possibility of using autoantigens to induce antigen-specific regulatory T cells to prevent and regulate autoimmune diabetes.
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MESH Headings
- Adoptive Transfer
- Animals
- Antibodies, Monoclonal/pharmacology
- Antigen Presentation/immunology
- Antigens, CD/metabolism
- Antigens, Differentiation, T-Lymphocyte/metabolism
- CD3 Complex/immunology
- CD4 Antigens/immunology
- CD4 Antigens/metabolism
- Coculture Techniques
- Diabetes Mellitus, Type 1/immunology
- Drug Administration Routes
- Female
- Glycosuria/etiology
- Glycosuria/urine
- Immune Tolerance/immunology
- Insulin/administration & dosage
- Insulin/immunology
- Insulin/pharmacology
- Interferon-gamma/metabolism
- Interleukin-10/metabolism
- Islets of Langerhans/cytology
- Islets of Langerhans/pathology
- L-Selectin/metabolism
- Lectins, C-Type
- Leukocyte Common Antigens/metabolism
- Lymph Nodes/cytology
- Lymphocyte Activation/immunology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Inbred NOD/immunology
- Mice, SCID
- Ovalbumin/immunology
- Ovalbumin/pharmacology
- Peptide Fragments/administration & dosage
- Peptide Fragments/immunology
- Peptide Fragments/pharmacology
- Protein Tyrosine Phosphatase, Non-Receptor Type 1
- Receptors, Interleukin-2/immunology
- Receptors, Interleukin-2/metabolism
- Spleen/cytology
- T-Lymphocytes/drug effects
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- Transforming Growth Factor beta/metabolism
- Tumor Necrosis Factor-alpha/metabolism
- Vaccination
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Affiliation(s)
- Rinee Mukherjee
- Department of Microbiology and Immunology, University of Western Ontario, and John P. Robarts Research Institute, University of Western Ontario, London, N6A 5C1, Ontario, Canada
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Movahedi B, Van de Casteele M, Caluwé N, Stangé G, Breckpot K, Thielemans K, Vreugdenhil G, Mathieu C, Pipeleers D. Human pancreatic duct cells can produce tumour necrosis factor-alpha that damages neighbouring beta cells and activates dendritic cells. Diabetologia 2004; 47:998-1008. [PMID: 15184981 DOI: 10.1007/s00125-004-1426-3] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2003] [Accepted: 04/17/2004] [Indexed: 10/26/2022]
Abstract
AIMS/HYPOTHESIS In the human pancreas, a close topographic relationship exists between duct cells and beta cells. This explains the high proportion of duct cells in isolated human islet preparations. We investigated whether human duct cells are a source of TNFalpha-mediated interactions with beta cells and immune cells. This cytokine has been implicated in the development of autoimmune diabetes in mice. METHODS Human duct cells were isolated from donor pancreases and examined for their ability to produce TNFalpha following a stress-signalling pathway. Duct-cell-released TNFalpha was tested for its in vitro effects on survival of human beta cells and on activation of human dendritic cells. RESULTS Exposure of human pancreatic duct cells to interleukin-1beta (IL-1beta) induces TNFalpha gene expression, synthesis of the 26,000 M(r) TNFalpha precursor and conversion to the 17,000 M(r) mature form, which is rapidly released. This effect is NO-independent and involves p38 MAPK and NF-kappaB signalling. Duct-cell-released TNFalpha contributed to cytokine-induced apoptosis of isolated human beta cells. It also induced activation of human dendritic cells. CONCLUSIONS/INTERPRETATION Human pancreatic duct cells are a potential source of TNFalpha that can cause apoptosis of neighbouring beta cells and initiate an immune response through activation of dendritic cells. They may thus actively participate in inflammatory and immune processes that threaten beta cells during development of diabetes or after human islet cell grafts have been implanted.
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Affiliation(s)
- B Movahedi
- Diabetes Research Centre, Brussels Free University-VUB and JDRF Centre for Beta Cell Therapy in Europe, Laarbeeklaan 103, 1090 Brussels, Belgium
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Vosters O, Beuneu C, Nagy N, Movahedi B, Aksoy E, Salmon I, Pipeleers D, Goldman M, Verhasselt V. CD40 expression on human pancreatic duct cells: role in nuclear factor-kappa B activation and production of pro-inflammatory cytokines. Diabetologia 2004; 47:660-8. [PMID: 15298343 DOI: 10.1007/s00125-004-1363-1] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
AIMS/HYPOTHESIS Human pancreatic duct cells are closely associated with islet beta cells, and contaminate islet suspensions transplanted in Type 1 diabetes mellitus patients. Activated duct cells produce cytotoxic mediators and possibly contribute to the pathogenesis of Type 1 diabetes mellitus or islet graft rejection. As CD40 transduces activation signals involved in inflammatory and immune disorders, we investigated CD40 expression on duct cells and their response to CD40 engagement. METHODS CD40 expression on human pancreatic duct cells was analysed by flow cytometry and immunohistochemical analyses. To assess the function of CD40 expression on duct cells, activation of the transcription factor nuclear factor-kappa B was determined using electrophoretic mobility shift assay and ELISA. Cytokine mRNA levels were quantified by real-time RT-PCR, and protein levels by Luminex technology. RESULTS Isolated human pancreatic duct cells and Capan-2 cell lines were found to express constitutively CD40. The expression of CD40 on duct cells was confirmed in vivo on human normal and pathological pancreatic specimens. CD40 ligation on Capan-2 cells induced rapid nuclear factor-kappa B activation, and supershift assays demonstrated that p50/p65 heterodimers and p50/p50 homodimers were present in the activated complexes in the nucleus. This activation was accompanied by tumour necrosis factor-a and interleukin-1beta mRNA accumulation. Tumour necrosis factor-alpha protein secretion was confirmed in CD40-activated Capan-2 cells and in isolated human pancreatic duct cells. CONCLUSIONS/INTERPRETATION Interaction between activated T lymphocytes expressing CD40 ligand and duct cells expressing CD40 may contribute to the immune responses involved in Type 1 diabetes mellitus and islet graft rejection. Interfering with CD40-mediated duct cell activation could alleviate beta cell damage of immune origin.
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Affiliation(s)
- O Vosters
- Laboratory of Experimental Immunology, Brussels Free University, Erasme Hospital, Brussels, Belgium
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50
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Marshall ACJ, Toh BH, Alderuccio F. Tumor necrosis factor alpha is not implicated in the genesis of experimental autoimmune gastritis. J Autoimmun 2004; 22:1-11. [PMID: 14709408 DOI: 10.1016/j.jaut.2003.09.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Experimental autoimmune gastritis (EAG) characterised by mononuclear cell infiltrate, parietal and zymogenic cell destruction and circulating autoantibodies to gastric H(+)/K(+)ATPase is an animal model for human autoimmune gastritis, that leads to pernicious anaemia. We have previously shown that Fas has a role in initiating damage to target cells in EAG. Here we used three strategies to examine the role of TNFalpha in this disease. We administered neutralising anti-TNFalpha antibody either as a single injection or as twice weekly injections for 8 weeks to mice subjected to neonatal thymectomy-induced EAG. To address the role of apoptotic signals through TNFR1, TNFR1 deficient mice were either neonatally thymectomised or crossed to PC-GMCSF transgenic mice that spontaneously develop EAG. Neonatally thymectomised mice treated with anti-TNFalpha antibody developed destructive gastritis and autoantibodies to gastric H(+)/K(+)ATPase similar to control mice. Following either neonatal thymectomy or crossing to PC-GMCSF transgenic mice, TNFR1 deficient mice developed autoantibody-positive destructive gastritis at similar frequency compared with wild type and heterozygous littermates. Our observations that neutralisation of TNFalpha and absence of TNFR1 has no discernible effect on development of EAG suggest that TNFalpha is not required for mucosal cell damage or development of autoimmune gastritis. While blocking TNFalpha activity has therapeutic benefit in certain autoimmune diseases, this is not the case for EAG.
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Affiliation(s)
- Aiden C J Marshall
- Department of Pathology and Immunology, Central and Eastern Clinical School, Monash University, AMREP, Commercial Road, Prahran, Victoria 3181, Australia
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