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Mićanović D, Lazarević M, Kulaš J, Despotović S, Stegnjaić G, Jevtić B, Koprivica I, Mirkov I, Stanisavljević S, Nikolovski N, Miljković Đ, Saksida T. Ethyl pyruvate ameliorates acute respiratory distress syndrome in mice. Eur J Pharmacol 2024; 971:176509. [PMID: 38493914 DOI: 10.1016/j.ejphar.2024.176509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 02/15/2024] [Accepted: 03/14/2024] [Indexed: 03/19/2024]
Abstract
Acute respiratory distress syndrome (ARDS) became a focus of intensive research due to its death toll during the Covid-19 pandemic. An uncontrolled and excessive inflammatory response mediated by proinflammatory molecules such as high mobility group box protein 1 (HMGB1), IL-6, and TNF mounts as a response to infection. In this study, ethyl pyruvate (EP), a known inhibitor of HMGB1, was tested in the model of murine ARDS induced in C57BL/6 mice by intranasal administration of polyinosinic:polycytidylic acid (poly(I:C)). Intraperitoneal administration of EP ameliorated the ARDS-related histopathological changes in the lungs of poly(I:C)-induced ARDS and decreased numbers of immune cells in the lungs, broncho-alveolar lavage fluid and draining lymph nodes (DLN). Specifically, fewer CD8+ T cells and less activated CD4+ T cells were observed in DLN. Consequently, the lungs of EP-treated animals had fewer damage-inflicting CD8+ cells and macrophages. Additionally, the expression and production of proinflammatory cytokines, IL-17, IFN-γ and IL-6 were downregulated in the lungs. The expression of chemokine CCL5 which recruits immune cells into the lungs was also reduced. Finally, EP downregulated the expression of HMGB1 in the lungs. Our results imply that EP should be further evaluated as a potential candidate for ARDS therapy.
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Affiliation(s)
- Dragica Mićanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia
| | - Milica Lazarević
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia
| | - Jelena Kulaš
- Department of Ecology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia
| | - Sanja Despotović
- Institute of Histology and Embryology "Aleksandar Đ. Kostić", School of Medicine, University of Belgrade, Višegradska 26, 11000, Belgrade, Serbia
| | - Goran Stegnjaić
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia
| | - Bojan Jevtić
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia
| | - Ivan Koprivica
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia
| | - Ivana Mirkov
- Department of Ecology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia
| | - Suzana Stanisavljević
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia
| | - Neda Nikolovski
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia
| | - Đorđe Miljković
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060, Belgrade, Serbia.
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Markelic M, Stancic A, Saksida T, Grigorov I, Micanovic D, Velickovic K, Martinovic V, Savic N, Gudelj A, Otasevic V. Defining the ferroptotic phenotype of beta cells in type 1 diabetes and its inhibition as a potential antidiabetic strategy. Front Endocrinol (Lausanne) 2023; 14:1227498. [PMID: 37600723 PMCID: PMC10437050 DOI: 10.3389/fendo.2023.1227498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Accepted: 07/19/2023] [Indexed: 08/22/2023] Open
Abstract
Introduction Recently, the involvement of ferroptotic cell death in the reduction of β-cell mass in diabetes has been demonstrated. To elucidate the mechanisms of β-cell ferroptosis and potential antidiabetic effects of the ferroptosis inhibitor ferrostatin-1 (Fer-1) in vivo, a mouse model of type 1 diabetes (T1D) was used. Methods Animals were divided into three groups: control (vehicle-treated), diabetic (streptozotocin-treated, 40 mg/kg, from days 1-5), and diabetic treated with Fer-1 (1 mg/kg, from days 1-21). On day 22, glycemia and insulinemia were measured and pancreases were isolated for microscopic analyses. Results Diabetes disturbed general parameters of β-cell mass (islet size, β-cell abundance and distribution) and health (insulin and PDX-1 expression), increased lipid peroxidation in islet cells, and phagocytic removal of iron-containing material. It also downregulated the main players of the antiferroptotic pathway - Nrf2, GPX4, and xCT. In contrast, Fer-1 ameliorated the signs of deterioration of β-cell/islets, decreased lipid peroxidation, and reduced phagocytic activity, while upregulated expression of Nrf2 (and its nuclear translocation), GPX4, and xCT in β-cell/islets. Discussion Overall, our study confirms ferroptosis as an important mode of β-cell death in T1D and suggests antiferroptotic agents as a promising strategy for the prevention and treatment of diabetes.
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Affiliation(s)
- Milica Markelic
- Department of Cell and Tissue Biology, Faculty of Biology, University of Belgrade, Serbia
| | - Ana Stancic
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Ilijana Grigorov
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Dragica Micanovic
- Department of Immunology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Ksenija Velickovic
- Department of Cell and Tissue Biology, Faculty of Biology, University of Belgrade, Serbia
| | - Vesna Martinovic
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Nevena Savic
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Andjelija Gudelj
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Vesna Otasevic
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Saksida T, Paunović V, Koprivica I, Mićanović D, Jevtić B, Jonić N, Stojanović I, Pejnović N. Development of Type 1 Diabetes in Mice Is Associated with a Decrease in IL-2-Producing ILC3 and FoxP3 + Treg in the Small Intestine. Molecules 2023; 28:molecules28083366. [PMID: 37110604 PMCID: PMC10141349 DOI: 10.3390/molecules28083366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/20/2023] [Accepted: 04/03/2023] [Indexed: 04/29/2023] Open
Abstract
Recent data indicate the link between the number and function of T regulatory cells (Treg) in the gut immune tissue and initiation and development of autoimmunity associated with type 1 diabetes (T1D). Since type 3 innate lymphoid cells (ILC3) in the small intestine are essential for maintaining FoxP3+ Treg and there are no data about the possible role of ILC3 in T1D pathogenesis, the aim of this study was to explore ILC3-Treg link during the development of T1D. Mature diabetic NOD mice had lower frequencies of IL-2-producing ILC3 and Treg in small intestine lamina propria (SILP) compared to prediabetic NOD mice. Similarly, in multiple low doses of streptozotocin (MLDS)-induced T1D in C57BL/6 mice, hyperglycemic mice exhibited lower numbers of ILC3, IL-2+ ILC3 and Treg in SILP compared to healthy controls. To boost T1D severity, mice were treated with broad-spectrum antibiotics (ABX) for 14 days prior to T1D induction by MLDS. The higher incidence of T1D in ABX-treated mice was associated with significantly lower frequencies of IL-2+ ILC3 and FoxP3+ Treg in SILP compared with mice without ABX treatment. The obtained findings show that the lower proportions of IL-2-expressing ILC3 and FoxP3+ Treg in SILP coincided with diabetes progression and severity.
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Affiliation(s)
- Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Verica Paunović
- Institute of Microbiology and Immunology, Faculty of Medicine, University of Belgrade, Pasterova 2, 11000 Belgrade, Serbia
| | - Ivan Koprivica
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Dragica Mićanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Bojan Jevtić
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Natalija Jonić
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Nada Pejnović
- Department of Immunology, Institute for Biological Research "Siniša Stanković"-National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
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Stancic A, Velickovic K, Markelic M, Grigorov I, Saksida T, Savic N, Vucetic M, Martinovic V, Ivanovic A, Otasevic V. Involvement of Ferroptosis in Diabetes-Induced Liver Pathology. Int J Mol Sci 2022; 23:ijms23169309. [PMID: 36012572 PMCID: PMC9409200 DOI: 10.3390/ijms23169309] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 08/10/2022] [Accepted: 08/14/2022] [Indexed: 11/18/2022] Open
Abstract
Cell death plays an important role in diabetes-induced liver dysfunction. Ferroptosis is a newly defined regulated cell death caused by iron-dependent lipid peroxidation. Our previous studies have shown that high glucose and streptozotocin (STZ) cause β-cell death through ferroptosis and that ferrostatin-1 (Fer-1), an inhibitor of ferroptosis, improves β-cell viability, islet morphology, and function. This study was aimed to examine in vivo the involvement of ferroptosis in diabetes-related pathological changes in the liver. For this purpose, male C57BL/6 mice, in which diabetes was induced with STZ (40 mg/kg/5 consecutive days), were treated with Fer-1 (1 mg/kg, from day 1–21 day). It was found that in diabetic mice Fer-1 improved serum levels of ALT and triglycerides and decreased liver fibrosis, hepatocytes size, and binucleation. This improvement was due to the Fer-1-induced attenuation of ferroptotic events in the liver of diabetic mice, such as accumulation of pro-oxidative parameters (iron, lipofuscin, 4-HNE), decrease in expression level/activity of antioxidative defense-related molecules (GPX4, Nrf2, xCT, GSH, GCL, HO-1, SOD), and HMGB1 translocation from nucleus into cytosol. We concluded that ferroptosis contributes to diabetes-related pathological changes in the liver and that the targeting of ferroptosis represents a promising approach in the management of diabetes-induced liver injury.
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Affiliation(s)
- Ana Stancic
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia
- Correspondence: (A.S.); (V.O.); Tel.: +381-11-207-8430 (A.S. & V.O.); Fax: +381-11-276-1433 (A.S. & V.O.)
| | - Ksenija Velickovic
- Department of Cell and Tissue Biology, Faculty of Biology, University of Belgrade, 11060 Belgrade, Serbia
| | - Milica Markelic
- Department of Cell and Tissue Biology, Faculty of Biology, University of Belgrade, 11060 Belgrade, Serbia
| | - Ilijana Grigorov
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia
| | - Nevena Savic
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia
| | - Milica Vucetic
- Medical Biology Department, Centre Scientifique de Monaco (CSM), 98000 Monaco, Monaco
| | - Vesna Martinovic
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia
| | - Andjelija Ivanovic
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia
| | - Vesna Otasevic
- Department of Molecular Biology, Institute for Biological Research “Siniša Stanković”, National Institute of Republic of Serbia, University of Belgrade, 11060 Belgrade, Serbia
- Correspondence: (A.S.); (V.O.); Tel.: +381-11-207-8430 (A.S. & V.O.); Fax: +381-11-276-1433 (A.S. & V.O.)
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Li H, Ziemer M, Stojanovic I, Saksida T, Maksimovic-Ivanic D, Mijatovic S, Djmura G, Gajic D, Koprivica I, Krajnovic T, Draca D, Simon JC, Lethaus B, Savkovic V. Mesenchymal Stem Cells From Mouse Hair Follicles Reduce Hypertrophic Scarring in a Murine Wound Healing Model. Stem Cell Rev Rep 2022; 18:2028-2044. [PMID: 35080748 PMCID: PMC9391240 DOI: 10.1007/s12015-021-10288-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2021] [Indexed: 12/11/2022]
Abstract
Wound healing of acute full-thickness injuries and chronic non-healing ulcers leads to delayed wound closure, prolonged recovery period and hypertrophic scarring, generating a demand for an autologous cell therapy and a relevant pre-clinical research models for wound healing. In this study, an immunocompetent model for wound healing was employed using a syngeneic murine cell line of mesenchymal stem cells cultured from the mouse whisker hair follicle outer root sheath (named moMSCORS). moMSCORS were isolated using an air-liquid interface method, expanded in vitro and characterized according to the MSC definition criteria - cell viability, in vitro proliferation, MSC phenotype and multi-lineage differentiations. Moreover, upon applying moMSCORS in an in vivo full-thickness wound model in the syngeneic C57BL/6 mice, the treated wounds displayed different morphology to that of the untreated wound beds. Quantitative evaluation of angiogenesis, granulation and wound closure involving clinical scoring and software-based quantification indicated a lower degree of inflammation in the treated wounds. Histological staining of treated wounds by the means of H&E, Alcian Blue, PicroSirius Red and αSMA immune labelling showed lower cellularity, less collagen filaments as well as thinner dermal and epidermal layers compared with the untreated wounds, indicating a general reduction of hypertrophic scars. The decreased inflammation, accelerated wound closure and non-hypertrophic scarring, which were facilitated by moMSCORS, hereby address a common problem of hypertrophic scars and non-physiological tissue properties upon wound closure, and additionally offer an in vivo model for the autologous cell-based wound healing.
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Affiliation(s)
- Hanluo Li
- National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei Provincial Key Laboratory of Industrial Microbiology, Sino-German Biomedical Center, Hubei University of Technology, Wuhan, 430068, Hubei Province, China.,Department of Cranial Maxillofacial Plastic Surgery, University Clinic Leipzig, 04103, Leipzig, Germany
| | - Mirjana Ziemer
- Clinic for Dermatology, Venereology and Allergology, University Hospital Leipzig, 04103, Leipzig, Germany
| | - Ivana Stojanovic
- Institute for Biological Research "Sinisa Stankovic" (IBISS) - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Tamara Saksida
- Institute for Biological Research "Sinisa Stankovic" (IBISS) - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Danijela Maksimovic-Ivanic
- Institute for Biological Research "Sinisa Stankovic" (IBISS) - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Sanja Mijatovic
- Institute for Biological Research "Sinisa Stankovic" (IBISS) - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Goran Djmura
- Clinic for Dermatology, Venereology and Allergology, University Hospital Leipzig, 04103, Leipzig, Germany
| | - Dragica Gajic
- Institute for Biological Research "Sinisa Stankovic" (IBISS) - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Ivan Koprivica
- Institute for Biological Research "Sinisa Stankovic" (IBISS) - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Tamara Krajnovic
- Institute for Biological Research "Sinisa Stankovic" (IBISS) - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Dijana Draca
- Institute for Biological Research "Sinisa Stankovic" (IBISS) - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Jan-Christoph Simon
- Clinic for Dermatology, Venereology and Allergology, University Hospital Leipzig, 04103, Leipzig, Germany
| | - Bernd Lethaus
- Department of Cranial Maxillofacial Plastic Surgery, University Clinic Leipzig, 04103, Leipzig, Germany
| | - Vuk Savkovic
- Department of Cranial Maxillofacial Plastic Surgery, University Clinic Leipzig, 04103, Leipzig, Germany.
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Koprivica I, Jonić N, Diamantis D, Gajić D, Saksida T, Pejnović N, Tzakos AG, Stojanović I. Phenethyl ester of rosmarinic acid attenuates autoimmune responses during type 1 diabetes development in mice. Life Sci 2022; 288:120184. [PMID: 34838848 DOI: 10.1016/j.lfs.2021.120184] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/01/2021] [Accepted: 11/22/2021] [Indexed: 12/14/2022]
Abstract
AIMS Rosmarinic acid (RA) is a polyphenol that occurs in plants of the Lamiaceae family. Phenethyl ester of RA (PERA), a novel RA derivative, has been developed and evaluated in vivo in an animal model of type 1 diabetes (T1D). METHODS T1D was induced in male C57BL/6 mice using multiple low doses of streptozotocin (STZ) administered intraperitoneally for 5 consecutive days. Intraperitoneal administration of PERA (2.5 mg/kg bw) began from the first STZ injection and continued for 20 days. KEY FINDINGS PERA-treated mice exhibited lower incidence of T1D (monitored up to 38 days from the disease induction), and fluorescent histochemical analysis showed that their pancreatic islets expressed more insulin. PERA treatment significantly down-regulated the proportions of CD11b+ and CD11c+ myeloid cells in the immune cell infiltrates in the pancreatic islets early during T1D pathogenesis (on day 9 after T1D induction), while on day 15, PERA significantly reduced the proportions of CD11c+, CD8+, Th1 and Th17 cells. Simultaneously, it was found that the cells from the pancreatic infiltrates of PERA-treated mice produced significantly less reactive oxygen species than cells from the control group. SIGNIFICANCE These findings suggest that PERA efficiently prevented T1D development in mice. Interestingly, PERA attenuated the inflammatory process in the islets through temporally specific interference with the innate and adaptive immune response and therefore shows great promise for further clinical evaluation as a novel T1D therapeutic.
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Affiliation(s)
- Ivan Koprivica
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Natalija Jonić
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Dimitris Diamantis
- Section of Organic Chemistry & Biochemistry, Department of Chemistry, University of Ioannina, Ioannina, Greece
| | - Dragica Gajić
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Tamara Saksida
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Nada Pejnović
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Andreas G Tzakos
- Section of Organic Chemistry & Biochemistry, Department of Chemistry, University of Ioannina, Ioannina, Greece
| | - Ivana Stojanović
- Institute for Biological Research "Siniša Stanković" National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia.
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Gajić D, Despotović S, Koprivica I, Miljković Đ, Saksida T. Ethyl Pyruvate Ameliorates Experimental Autoimmune Myocarditis. Biomolecules 2021; 11:biom11121768. [PMID: 34944410 PMCID: PMC8698267 DOI: 10.3390/biom11121768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Revised: 11/17/2021] [Accepted: 11/23/2021] [Indexed: 02/07/2023] Open
Abstract
Ethyl pyruvate (EP) has profound anti-inflammatory and immunomodulatory properties. Here, its effects were determined on experimental autoimmune myocarditis (EAM) induced in mice by heart-specific myosin-alpha heavy chain peptide immunization. EP was applied intraperitoneally, daily, starting with the immunization. Severity of EAM was determined by histological assessment of immune cell infiltrates into the heart. Cells were phenotypically characterized by flow cytometry. Concentration of cytokines in cell culture supernatants and sera was determined by ELISA. EP reduced the infiltration of immune cells into the heart and lessened heart inflammation. Smaller number of total immune cells, as well as of CD11b+ and CD11c+ cells were isolated from the hearts of EP-treated mice. A reduced number of antigen-presenting cells, detected by anti-CD11c, MHC class II and CD86 antibodies, as well as of T helper (Th)1 and Th17 cells, detected by anti-CD4, IFN-γ and IL-17 antibodies, was determined in mediastinal lymph nodes draining the heart, in parallel. In the spleen, only the number of CD11c+ cells were reduced, but not of the other examined populations, thus implying limited systemic effect of EP. Reduced production of IFN-γ and IL-17 by myosin-alpha heavy chain peptide-restimulated cells of the lymph nodes draining the site of immunization was observed in EP-treated mice. Our results clearly imply that EP restrains autoimmunity in EAM. Therapeutic application of EP in the treatment of myocarditis in humans should be addressed in the forthcoming studies.
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Affiliation(s)
- Dragica Gajić
- Department of Immunology, Institute for Biological Research “Siniša Stanković”—National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia; (D.G.); (I.K.); (T.S.)
| | - Sanja Despotović
- Faculty of Medicine, Institute of Histology and Embryology, University of Belgrade, Dr Subotića 9, 11000 Belgrade, Serbia;
| | - Ivan Koprivica
- Department of Immunology, Institute for Biological Research “Siniša Stanković”—National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia; (D.G.); (I.K.); (T.S.)
| | - Đorđe Miljković
- Department of Immunology, Institute for Biological Research “Siniša Stanković”—National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia; (D.G.); (I.K.); (T.S.)
- Correspondence: ; Tel.: +381-11-2078390
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research “Siniša Stanković”—National Institute of Republic of Serbia, University of Belgrade, Bulevar Despota Stefana 142, 11000 Belgrade, Serbia; (D.G.); (I.K.); (T.S.)
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Stojanović I, Saksida T, Miljković Đ, Pejnović N. Modulation of Intestinal ILC3 for the Treatment of Type 1 Diabetes. Front Immunol 2021; 12:653560. [PMID: 34149694 PMCID: PMC8209467 DOI: 10.3389/fimmu.2021.653560] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 05/18/2021] [Indexed: 11/22/2022] Open
Abstract
Gut-associated lymphoid tissue (GALT) is crucial for the maintenance of the intestinal homeostasis, but it is also the potential site of the activation of autoreactive cells and initiation/propagation of autoimmune diseases in the gut and in the distant organs. Type 3 innate lymphoid cells (ILC3) residing in the GALT integrate signals from food ingredients and gut microbiota metabolites in order to control local immunoreactivity. Notably, ILC3 secrete IL-17 and GM-CSF that activate immune cells in combating potentially pathogenic microorganisms. ILC3 also produce IL-22 that potentiates the strength and integrity of epithelial tight junctions, production of mucus and antimicrobial peptides thus enabling the proper function of the intestinal barrier. The newly discovered function of small intestine ILC3 is the secretion of IL-2 and the promotion of regulatory T cell (Treg) generation and function. Since the intestinal barrier dysfunction, together with the reduction in small intestine ILC3 and Treg numbers are associated with the pathogenesis of type 1 diabetes (T1D), the focus of this article is intestinal ILC3 modulation for the therapy of T1D. Of particular interest is free fatty acids receptor 2 (FFAR2), predominantly expressed on intestinal ILC3, that can be stimulated by available selective synthetic agonists. Thus, we propose that FFAR2-based interventions by boosting ILC3 beneficial functions may attenuate autoimmune response against pancreatic β cells during T1D. Also, it is our opinion that treatments based on ILC3 stimulation by functional foods can be used as prophylaxis in individuals that are genetically predisposed to develop T1D.
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Affiliation(s)
- Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Đorđe Miljković
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Nada Pejnović
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of the Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Saksida T, Jevtić B, Djedović N, Miljković Đ, Stojanović I. Redox Regulation of Tolerogenic Dendritic Cells and Regulatory T Cells in the Pathogenesis and Therapy of Autoimmunity. Antioxid Redox Signal 2021; 34:364-382. [PMID: 32458699 DOI: 10.1089/ars.2019.7999] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Significance: Autoimmune diseases are progressively affecting westernized societies, as the proportion of individuals suffering from autoimmunity is steadily increasing over the past decades. Understanding the role of reactive oxygen species (ROS) in modulation of the immune response in the pathogenesis of autoimmune disorders is of utmost importance. The focus of this review is the regulation of ROS production within tolerogenic dendritic cells (tolDCs) and regulatory T (Treg) cells that have the essential role in the prevention of autoimmune diseases and significant potency in their therapy. Recent Advances: It is now clear that ROS are extremely important for the proper function of both DC and T cells. Antigen processing/presentation and the ability of DC to activate T cells depend upon the ROS availability. Treg differentiation, suppressive function, and stability are profoundly influenced by ROS presence. Critical Issues: Although a plethora of results on the relation between ROS and immune cells exist, it remains unclear whether ROS modulation is a productive way for skewing T cells and DCs toward a tolerogenic phenotype. Also, the possibility of ROS modulation for enhancement of regulatory properties of DC and Treg during their preparation for use in cellular therapy has to be clarified. Future Directions: Studies of DC and T cell redox regulation should allow for the improvement of the therapy of autoimmune diseases. This could be achieved through the direct therapeutic application of ROS modulators in autoimmunity, or indirectly through ROS-dependent enhancement of tolDC and Treg preparation for cell-based immunotherapy. Antioxid. Redox Signal. 34, 364-382.
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Affiliation(s)
- Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković," National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Bojan Jevtić
- Department of Immunology, Institute for Biological Research "Siniša Stanković," National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Neda Djedović
- Department of Immunology, Institute for Biological Research "Siniša Stanković," National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Đorđe Miljković
- Department of Immunology, Institute for Biological Research "Siniša Stanković," National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković," National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
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Gajić D, Saksida T, Koprivica I, Šenerović L, Morić I, Šavikin K, Menković N, Pejnović N, Stojanović I. Immunomodulatory activity and protective effects of chokeberry fruit extract on Listeria monocytogenes infection in mice. Food Funct 2020; 11:7793-7803. [PMID: 32808624 DOI: 10.1039/d0fo00946f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Chokeberry (Aronia melanocarpa) fruit extracts (CE) are rich in polyphenols and usually exhibit immunomodulatory, anti-viral and anti-bacterial effects. We have previously shown that the CE used in this study activated macrophages and stimulated effector T cell differentiation in vitro. When applied orally to healthy mice, CE increased the proportion of CD11c+ dendritic cells in the gut-associated lymphoid tissue. CE-pretreated BALB/c mice readily eradicated orally ingested Listeria monocytogenes as evidenced by a slighter decrease in body weight and number of bacteria recovered from the spleen and reduced spleen size compared to the control infected mice. CE pretreatment in infected mice resulted in higher proportions of CD11b+ macrophages and CD8+ cytotoxic T cells both in the gut and the spleen. Phagocytosis, reactive oxygen species production and the proportions of activated CD86+ macrophages (CD11b+) and dendritic cells (CD11c+) were also enhanced in CE-pretreated infected mice. Furthermore, the expression of inducible nitric oxide synthase and IL-6 was increased in CE-pretreated infected mice and similar results were obtained in peritoneal macrophages in vitro. This effect of CE was associated with increased phosphorylation of IκB and Notch1 production. Finally, CE pretreatment elevated the proportion of perforin-producing cells in the spleen compared to control infected mice. This study demonstrates that prophylactic treatment with CE leads to more rapid eradication of bacterial infection with L. monocytogenes predominantly through increased activity of myeloid cells in the gut and in the spleen.
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Affiliation(s)
- Dragica Gajić
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia.
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia.
| | - Ivan Koprivica
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia.
| | - Lidija Šenerović
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade 152, Serbia
| | - Ivana Morić
- Institute of Molecular Genetics and Genetic Engineering, University of Belgrade, Vojvode Stepe 444a, 11042 Belgrade 152, Serbia
| | - Katarina Šavikin
- Institute for Medicinal Plants Research "Dr Josif Pančić", Tadeuša Košćuška 1, 11000 Belgrade, Serbia
| | - Nebojša Menković
- Institute for Medicinal Plants Research "Dr Josif Pančić", Tadeuša Košćuška 1, 11000 Belgrade, Serbia
| | - Nada Pejnović
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia.
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Bulevar despota Stefana 142, 11060 Belgrade, Serbia.
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Gajic D, Saksida T, Koprivica I, Vujicic M, Despotovic S, Savikin K, Jankovic T, Stojanovic I. Chokeberry (Aronia melanocarpa) fruit extract modulates immune response in vivo and in vitro. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.103836] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Koprivica I, Gajic D, Saksida T, Cavalli E, Auci D, Despotovic S, Pejnovic N, Stosic-Grujicic S, Nicoletti F, Stojanovic I. Orally delivered all-trans-retinoic acid- and transforming growth factor-β-loaded microparticles ameliorate type 1 diabetes in mice. Eur J Pharmacol 2019; 864:172721. [DOI: 10.1016/j.ejphar.2019.172721] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/01/2019] [Accepted: 10/02/2019] [Indexed: 02/06/2023]
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13
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Stošić-Grujičić S, Saksida T, Miljković Đ, Stojanović I. MIF and insulin: Lifetime companions from common genesis to common pathogenesis. Cytokine 2019; 125:154792. [PMID: 31400637 DOI: 10.1016/j.cyto.2019.154792] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 07/01/2019] [Accepted: 07/24/2019] [Indexed: 12/19/2022]
Abstract
Pro-inflammatory nature of macrophage migration inhibitory factor (MIF) has been generally related to the propagation of inflammatory and autoimmune diseases. But this molecule possesses many other peculiar functions, unrelated to the immune system, among which is its supportive role in the post-translational modifications of insulin. In this way MIF enables proper insulin conformation within the pancreatic beta cell and its full activity. The inherent or acquired changes in MIF expression might therefore lead to different insulin processing and initiation of autoimmunity. The relation between MIF and insulin does not stop at this point; these two molecules continue to interact during pathological states characterized by inflammation and insulin resistance. In this context, MIF indirectly and negatively influences insulin action by boosting inflammatory environment and disabling target cells to respond to insulin. On the other side, insulin might interfere with MIF action as well, acting as an anti-inflammatory mediator. Therefore, the proper interaction between MIF and insulin is crucial for maintaining homeostasis, while anti-inflammatory therapies based on the systemic MIF blockage may disturb this balance. This review covers MIF-insulin relationship in the physiological and pathological conditions and discusses the approaches for MIF inhibition and their net effect specifically considering possible impact on insulin misfolding and the possible misinterpretation of previous results due to the discovery of MIF functional homolog D-dopachrome tautomerase.
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Affiliation(s)
- Stanislava Stošić-Grujičić
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Đorđe Miljković
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia.
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Djedovic N, Mansilla MJ, Jevtić B, Navarro-Barriuso J, Saksida T, Martínez-Cáceres EM, Miljković Ð. Ethyl Pyruvate Induces Tolerogenic Dendritic Cells. Front Immunol 2019; 10:157. [PMID: 30792716 PMCID: PMC6374627 DOI: 10.3389/fimmu.2019.00157] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/17/2019] [Indexed: 01/03/2023] Open
Abstract
Dendritic cells (DC) are professional antigen presenting cells that have a key role in shaping the immune response. Tolerogenic DC (tolDC) have immuno-regulatory properties and they are a promising prospective therapy for multiple sclerosis and other autoimmune diseases. Ethyl pyruvate (EP) is a redox analog of dimethyl fumarate (Tecfidera), a drug for multiple sclerosis treatment. We have recently shown that EP ameliorates experimental autoimmune encephalomyelitis, a multiple sclerosis murine model. Here, we expanded our study to its tolerogenic effects on DC. Phenotypic analysis has shown that DC obtained from mice or humans reduce expression of molecules required for T cell activation such as CD86, CD83, and HLA-DR under the influence of EP, while CD11c expression and viability of DC are not affected. Furthermore, EP-treated DC restrain proliferation and modulate cytokine production of allogeneic lymphocytes. These results demonstrate that EP has the ability to direct DC toward tolDC.
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Affiliation(s)
- Neda Djedovic
- Department of Immunology, Institute for Biological Research "Siniša Stanković" University of Belgrade, Belgrade, Serbia
| | - María José Mansilla
- Immunology Division, Germans Trias i Pujol University Hospital and Research Institute, Badalona, Spain.,Department of Cellular Biology, Physiology, and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Bojan Jevtić
- Department of Immunology, Institute for Biological Research "Siniša Stanković" University of Belgrade, Belgrade, Serbia
| | - Juan Navarro-Barriuso
- Immunology Division, Germans Trias i Pujol University Hospital and Research Institute, Badalona, Spain.,Department of Cellular Biology, Physiology, and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković" University of Belgrade, Belgrade, Serbia
| | - Eva M Martínez-Cáceres
- Immunology Division, Germans Trias i Pujol University Hospital and Research Institute, Badalona, Spain.,Department of Cellular Biology, Physiology, and Immunology, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, Spain
| | - Ðorđe Miljković
- Department of Immunology, Institute for Biological Research "Siniša Stanković" University of Belgrade, Belgrade, Serbia
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Saksida T, Koprivica I, Vujičić M, Stošić-Grujičić S, Perović M, Kanazir S, Stojanović I. Impaired IL-17 Production in Gut-Residing Immune Cells of 5xFAD Mice with Alzheimer's Disease Pathology. J Alzheimers Dis 2019; 61:619-630. [PMID: 29254086 DOI: 10.3233/jad-170538] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Alzheimer's disease (AD) is characterized by accumulation of amyloid-β plaques that further promotes microglia-mediated neuroinflammatory responses and inflammation in the brain. Emerging data are revealing the relation between gut-associated lymphoid tissue (GALT) cells and CNS, as effector cells primed in the gut might home to the brain. This study aimed to determine cell composition of GALT in 5xFAD mice, an established model for AD. Immune cells isolated from Peyer's patches (PP) and mesenteric lymph nodes (MLN) were stained with surface and intracellular markers for T helper (Th) subpopulations, B lymphocytes and macrophages and analyzed cytofluorimetrically, while cytokine expression and production were determined by qPCR and ELISA, respectively. Inflammation was detected in GALT of 5xFAD mice with established AD pathology. Although the production of IFN-γ, IL-4, and IL-10 was comparable between the strains, lower IL-17 production was observed in PP and MLN cells. This phenomenon could not be attributed to a lower abundance of Th17 cells, or cytokines that initiate their formation or propagation (TGF-β, IL-6, and IL-23). Also, reduced IL-17 production was not a consequence of altered Il-17 mRNA transcription or deficiency of Rorγt, a key transcription factor for IL-17. However, the expression of miR-155 (a non-coding micro RNA that promotes the development of Th17 cells), was significantly lower in MLN cells of 5xFAD mice. In contrast, mice without AD neuropathology did not have inflammation in GALT or altered Th17 numbers, nor decreased IL-17 production. In conclusion, the observed changes in GALT of 5xFAD mice mirror the disease progression and might reflect inadequate immune surveillance in the gut and lead to enhanced AD pathology.
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Affiliation(s)
- Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Ivan Koprivica
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Milica Vujičić
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Stanislava Stošić-Grujičić
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Milka Perović
- Department of Neurobiology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Selma Kanazir
- Department of Neurobiology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
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Koprivica I, Vujičić M, Gajić D, Saksida T, Stojanović I. Ethyl Pyruvate Stimulates Regulatory T Cells and Ameliorates Type 1 Diabetes Development in Mice. Front Immunol 2019; 9:3130. [PMID: 30687329 PMCID: PMC6335294 DOI: 10.3389/fimmu.2018.03130] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 12/18/2018] [Indexed: 12/31/2022] Open
Abstract
Type 1 diabetes (T1D) is an autoimmune disease in which a strong inflammatory response causes the death of insulin-producing pancreatic β-cells, while inefficient regulatory mechanisms allow that response to become chronic. Ethyl pyruvate (EP), a stable pyruvate derivate and certified inhibitor of an alarmin-high mobility group box 1 (HMGB1), exerts anti-oxidant and anti-inflammatory properties in animal models of rheumatoid arthritis and encephalomyelitis. To test its therapeutic potential in T1D, EP was administered intraperitoneally to C57BL/6 mice with multiple low-dose streptozotocin (MLDS)-induced T1D. EP treatment decreased T1D incidence, reduced the infiltration of cells into the pancreatic islets and preserved β-cell function. Apart from reducing HMGB1 expression, EP treatment successfully interfered with the inflammatory response within the local pancreatic lymph nodes and in the pancreas. Its effect was restricted to boosting the regulatory arm of the immune response through up-regulation of tolerogenic dendritic cells (CD11c+CD11b-CD103+) within the pancreatic infiltrates and through the enhancement of regulatory T cell (Treg) levels (CD4+CD25highFoxP3+). These EP-stimulated Treg displayed enhanced suppressive capacity reflected in increased levels of CTLA-4, secreted TGF-β, and IL-10 and in the more efficient inhibition of effector T cell proliferation compared to Treg from diabetic animals. Higher levels of Treg were a result of increased differentiation and proliferation (Ki67+ cells), but also of the heightened potency for migration due to increased expression of adhesion molecules (CD11a and CD62L) and CXCR3 chemokine receptor. Treg isolated from EP-treated mice had the activated phenotype and T-bet expression more frequently, suggesting that they readily suppressed IFN-γ-producing cells. The effect of EP on Treg was also reproduced in vitro. Overall, our results show that EP treatment reduced T1D incidence in C57BL/6 mice predominantly by enhancing Treg differentiation, proliferation, their suppressive capacity, and recruitment into the pancreas.
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Affiliation(s)
- Ivan Koprivica
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Milica Vujičić
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Dragica Gajić
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanović
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Belgrade, Serbia
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Vujicic M, Saksida T, Despotovic S, Bajic SS, Lalić I, Koprivica I, Gajic D, Golic N, Tolinacki M, Stojanovic I. The Role of Macrophage Migration Inhibitory Factor in the Function of Intestinal Barrier. Sci Rep 2018; 8:6337. [PMID: 29679061 PMCID: PMC5910418 DOI: 10.1038/s41598-018-24706-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 04/09/2018] [Indexed: 12/15/2022] Open
Abstract
Macrophage migration inhibitory factor (MIF) is a multifunctional protein that is involved in the development of gut-related inflammation. To investigate the role of MIF in the function of the intestinal barrier, we have explored intestinal permeability and gut-associated immune response in MIF-deficient (MIF-KO) mice. The absence of MIF provoked impairment of tight and adherens epithelial junctions in the colon through the disturbance of E-cadherin, zonula occludens-1, occludin and claudin-2 expression, which lead to the increase of intestinal barrier permeability. In these circumstances the diversity and content of gut microbiota in MIF-KO mice was considerably different compared to wild type mice. This change in microbiota was accompanied by an increased intestinal IgA concentration and a higher production of pro-inflammatory cytokines TNF and IFN-γ in mesenteric lymph nodes of MIF-KO mice. The forced changes of microbiota executed by antibiotics prevented the "leakage" of the barrier in MIF-KO mice, probably through up-regulation of occludin expression and normalization of cellular pore diameters. In addition, cytokine secretion was normalized after the treatment with antibiotics. These results suggest that MIF participates in the maintenance of physiological microbiota diversity and immunosurveillance, which in turn enables the proper intestinal barrier function.
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Affiliation(s)
- Milica Vujicic
- Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Department of Immunology, Belgrade, 11060, Serbia
| | - Tamara Saksida
- Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Department of Immunology, Belgrade, 11060, Serbia
| | - Sanja Despotovic
- Faculty of Medicine, University of Belgrade, Institute of Histology and Embryology, Belgrade, 11000, Serbia
| | - Svetlana Sokovic Bajic
- Institute of Molecular Genetics and Genetic Engineering (IMGGE), University of Belgrade, Belgrade, 11000, Serbia
| | - Ivana Lalić
- Faculty of Medicine, University of Belgrade, Institute of Histology and Embryology, Belgrade, 11000, Serbia
| | - Ivan Koprivica
- Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Department of Immunology, Belgrade, 11060, Serbia
| | - Dragica Gajic
- Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Department of Immunology, Belgrade, 11060, Serbia
| | - Natasa Golic
- Institute of Molecular Genetics and Genetic Engineering (IMGGE), University of Belgrade, Belgrade, 11000, Serbia
| | - Maja Tolinacki
- Institute of Molecular Genetics and Genetic Engineering (IMGGE), University of Belgrade, Belgrade, 11000, Serbia
| | - Ivana Stojanovic
- Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Department of Immunology, Belgrade, 11060, Serbia.
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Vujicic M, Saksida T, Mostarica Stojkovic M, Djedovic N, Stojanovic I, Stosic-Grujicic S. Protective effects of carbonyl iron against multiple low-dose streptozotocin-induced diabetes in rodents. J Cell Physiol 2017; 233:4990-5001. [PMID: 29215791 DOI: 10.1002/jcp.26338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 11/27/2017] [Indexed: 11/11/2022]
Abstract
Particulate adjuvants have shown increasing promise as effective, safe, and durable agents for the stimulation of immunity, or alternatively, the suppression of autoimmunity. Here we examined the potential of the adjuvant carbonyl iron (CI) for the modulation of organ-specific autoimmune disease-type 1 diabetes (T1D). T1D was induced by multiple low doses of streptozotocin (MLDS) that initiates beta cell death and triggers immune cell infiltration into the pancreatic islets. The results of this study indicate that the single in vivo application of CI to MLDS-treated DA rats, CBA/H mice, or C57BL/6 mice successfully counteracted the development of insulitis and hyperglycemia. The protective action was obtained either when CI was applied 7 days before, simultaneously with the first dose of streptozotocin, or 1 day after MLDS treatment. Ex vivo cell analysis of C57BL/6 mice showed that CI treatment reduced the proportion of proinflammatory F4/80+ CD40+ M1 macrophages and activated T lymphocytes in the spleen. Moreover, the treatment down-regulated the number of inflammatory CD4+ IFN-γ+ cells in pancreatic lymph nodes, Peyer's patches, and pancreas-infiltrating mononuclear cells, while simultaneously potentiating proportion of CD4+ IL17+ cells. The regulatory arm of the immune system represented by CD3+ NK1.1+ (NKT) and CD4+ CD25+ FoxP3+ regulatory T cells was potentiated after CI treatment. In vitro analysis showed that CI down-regulated CD40 and CD80 expression on dendritic cells thus probably interfering with their antigen-presenting ability. In conclusion, particulate adjuvant CI seems to suppress the activation of the innate immune response, which further affects the adaptive immune response directed toward pancreatic beta cells.
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Affiliation(s)
- Milica Vujicic
- Department of Immunology, Institute for Biological Research, "Sinisa Stankovic,", University of Belgrade, Belgrade, Serbia
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research, "Sinisa Stankovic,", University of Belgrade, Belgrade, Serbia
| | | | - Neda Djedovic
- Department of Immunology, Institute for Biological Research, "Sinisa Stankovic,", University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanovic
- Department of Immunology, Institute for Biological Research, "Sinisa Stankovic,", University of Belgrade, Belgrade, Serbia
| | - Stanislava Stosic-Grujicic
- Department of Immunology, Institute for Biological Research, "Sinisa Stankovic,", University of Belgrade, Belgrade, Serbia
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Nikolic I, Stojanovic I, Vujicic M, Fagone P, Mangano K, Stosic-Grujicic S, Nicoletti F, Saksida T. Standardized bovine colostrum derivative impedes development of type 1 diabetes in rodents. Immunobiology 2017; 222:272-279. [DOI: 10.1016/j.imbio.2016.09.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 09/21/2016] [Indexed: 12/16/2022]
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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Nikolic I, Saksida T, Vujicic M, Stojanovic I, Stosic-Grujicic S. Anti-diabetic actions of carbon monoxide-releasing molecule (CORM)-A1: Immunomodulation and regeneration of islet beta cells. Immunol Lett 2015; 165:39-46. [PMID: 25839127 DOI: 10.1016/j.imlet.2015.03.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 03/19/2015] [Accepted: 03/24/2015] [Indexed: 01/01/2023]
Abstract
We have recently shown that carbon monoxide releasing molecule (CORM)-A1 prevents type 1 diabetes induced in C57BL/6 mice with multiple low doses of streptozotocin (MLDS) by shifting the Th1/Th17/M1 balance towards a Th2/M2 response. In the present work we tested the hypothesis that CORM-A1 might influence regulatory arm of the immune response, as well as beta cell regeneration. CORM-A1 (2 mg/kg/day) was administered for 10 days to mice induced with MLDS and/or depleted of low dose cyclophosphamide (CY)-sensitive FoxP3+ T regulatory (Treg) cells. Besides monitoring hyperglycaemia, ex vivo analysis of spleen, pancreatic lymph nodes (PLN) and pancreas was performed at the end of treatment. In CORM-A1-treated MLDS-induced mice the improvement of hyperglycaemia was observed only without depletion of CY-sensitive FoxP3+ Treg cells. This was accompanied by decreased levels of interleukin (IL)-12, IL-2 and early activation marker CD25 in the spleen and PLN and increased transforming growth factor (TGF)-β, resulting in reduced lymphocyte proliferation in both organs. In parallel, decreased transcript levels of IL-2, but increased mRNA expression of TGF-β, accompanied with up-regulation of Ki-67 protein expression was observed within pancreas. Together, the data suggested that besides the immunomodulatory potential, CORM-A1 probably induces beta cell regeneration.
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Affiliation(s)
- Ivana Nikolic
- Department of Immunology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia
| | - Milica Vujicic
- Department of Immunology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanovic
- Department of Immunology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia
| | - Stanislava Stosic-Grujicic
- Department of Immunology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia.
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Saksida T, Vujicic M, Nikolic I, Stojanovic I, Haegeman G, Stosic-Grujicic S. Compound A, a selective glucocorticoid receptor agonist, inhibits immunoinflammatory diabetes, induced by multiple low doses of streptozotocin in mice. Br J Pharmacol 2014; 171:5898-909. [PMID: 25158597 DOI: 10.1111/bph.12892] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 07/24/2014] [Accepted: 08/22/2014] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND AND PURPOSE Type 1 diabetes is a multifactorial inflammatory disease that develops as a result of deregulated immune responses, causing progressive autoimmune destruction of insulin-producing beta cells of pancreas. 2-((4-acetoxyphenyl)-2-chloro-N-methyl) ethylammonium chloride, compound A (CpdA), is a selective glucocorticoid receptor (GR) agonist that displays strong anti-inflammatory and immunomodulatory activities. We investigated the therapeutic effectiveness of CpdA in a pharmacological model of type 1 diabetes in mice. EXPERIMENTAL APPROACH The utility of CpdA in diabetes prevention was evaluated in vivo through its prophylactic administration to male C57BL/6 mice that received multiple low doses of streptozotocin for immunoinflammatory diabetes induction. The effect of CpdA on disease development was studied by measuring blood glucose and insulin level, histopathological examination, determination of the nature of infiltrating cells, pro- and anti-inflammatory cytokine production, and signalling pathways. KEY RESULTS Prophylactic in vivo therapy with CpdA conferred protection against development of immunoinflammatory diabetes in mice by dampening the M1/Th1/Th17 immune response and switching it towards an anti-inflammatory M2/Th2/Treg profile, thus preserving beta cell function. CONCLUSIONS AND IMPLICATIONS Anti-diabetic properties of CpdA are mediated through modulation of immune cell-mediated pathways, but without triggering adverse events. These findings provide basic information for the therapeutic use of selective GR agonists in the amelioration of islet-directed autoimmunity.
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Affiliation(s)
- T Saksida
- Department of Immunology, Institute for Biological Research 'Sinisa Stankovic', University of Belgrade, Belgrade, Serbia
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Nikolic I, Vujicic M, Stojanovic I, Stosic-Grujicic S, Saksida T. Carbon Monoxide-Releasing Molecule-A1 Inhibits Th1/Th17 and Stimulates Th2 DifferentiationIn vitro. Scand J Immunol 2014; 80:95-100. [DOI: 10.1111/sji.12189] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 04/21/2014] [Indexed: 12/29/2022]
Affiliation(s)
- I. Nikolic
- Institute for Biological Research ‘Sinisa Stankovic’; University of Belgrade; Belgrade Serbia
| | - M. Vujicic
- Institute for Biological Research ‘Sinisa Stankovic’; University of Belgrade; Belgrade Serbia
| | - I. Stojanovic
- Institute for Biological Research ‘Sinisa Stankovic’; University of Belgrade; Belgrade Serbia
| | - S. Stosic-Grujicic
- Institute for Biological Research ‘Sinisa Stankovic’; University of Belgrade; Belgrade Serbia
| | - T. Saksida
- Institute for Biological Research ‘Sinisa Stankovic’; University of Belgrade; Belgrade Serbia
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Vujicic M, Nikolic I, Krajnovic T, Cheng KF, VanPatten S, He M, Stosic-Grujicic S, Stojanovic I, Al-Abed Y, Saksida T. Novel inhibitors of macrophage migration inhibitory factor prevent cytokine-induced beta cell death. Eur J Pharmacol 2014; 740:683-9. [PMID: 24967533 DOI: 10.1016/j.ejphar.2014.06.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 06/06/2014] [Accepted: 06/16/2014] [Indexed: 12/16/2022]
Abstract
Macrophage migration inhibitory factor is a multifunctional cytokine involved in the regulation of immune processes and also in apoptosis induction. Elevated MIF expression is detrimental for insulin-producing beta cells and MIF inhibition protected beta cells from several cytotoxic insults such as inflammatory cytokines, high fatty acids or high glucose concentrations. Therefore, the aim of this study was to investigate two newly synthesized small molecule MIF inhibitors (K664-1 and K647-1) and to compare them with previously established effects of the prototypical MIF inhibitor, ISO-1. Our results indicate that K664-1 and K647-1 are 160- and 40-fold more effective in inhibition of MIF׳s tautomerase activity than ISO-1. Also, new inhibitors confer beta cell protection from cytokine-triggered apoptosis at significantly lower concentrations than ISO-1. Although all three MIF inhibitors inhibit caspase 3 activity, K664-1 and K647-1 suppress pro-apoptotic BAX protein expression and up-regulate anti-apoptotic Bcl-2 mRNA. Finally, all three MIF inhibitors operate through blockade of nitric oxide production stimulated by cytokines. In conclusion, two novel MIF inhibitors are more potent than ISO-1 and operate through inhibition of the mitochondria-related apoptotic pathway. We propose that these compounds represent a unique class of anti-MIF antagonists that should be further tested for therapeutic use.
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Affiliation(s)
- Milica Vujicic
- Department of Immunology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia
| | - Ivana Nikolic
- Department of Immunology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia
| | - Tamara Krajnovic
- Department of Immunology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia
| | - Kai-Fan Cheng
- The Feinstein Institute for Medical Research, Manhasset, New York, USA
| | - Sonya VanPatten
- The Feinstein Institute for Medical Research, Manhasset, New York, USA
| | - Mingzhu He
- The Feinstein Institute for Medical Research, Manhasset, New York, USA
| | - Stanislava Stosic-Grujicic
- Department of Immunology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia
| | - Ivana Stojanovic
- Department of Immunology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia
| | - Yousef Al-Abed
- The Feinstein Institute for Medical Research, Manhasset, New York, USA.
| | - Tamara Saksida
- Department of Immunology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Belgrade, Serbia.
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Nikolic I, Saksida T, Mangano K, Vujicic M, Stojanovic I, Nicoletti F, Stosic-Grujicic S. Pharmacological application of carbon monoxide ameliorates islet-directed autoimmunity in mice via anti-inflammatory and anti-apoptotic effects. Diabetologia 2014; 57:980-90. [PMID: 24488023 DOI: 10.1007/s00125-014-3170-7] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 12/18/2013] [Indexed: 10/25/2022]
Abstract
AIMS/HYPOTHESIS Recent studies have identified carbon monoxide (CO) as a potential therapeutic molecule for the treatment of autoimmune diseases owing to its anti-inflammatory and anti-apoptotic properties. We explored the efficacy and the mechanisms of action of the CO-releasing molecule (CORM)-A1 in preclinical models of type 1 diabetes. METHODS The impact of CORM-A1 on diabetes development was evaluated in models of spontaneous diabetes in NOD mice and in diabetes induced in C57BL/6 mice by multiple low-dose streptozotocin (MLDS). Ex vivo analysis was performed to determine the impact of CORM-A1 both on T helper (Th) cell and macrophage differentiation and on their production of soluble mediators in peripheral tissues and in infiltrates of pancreatic islets. The potential effect of CORM-A1 on cytokine-induced apoptosis in pancreatic islets or beta cells was evaluated in vitro. RESULTS CORM-A1 conferred protection from diabetes in MLDS-induced mice and reduced diabetes incidence in NOD mice as confirmed by preserved insulin secretion and improved histological signs of the disease. In MLDS-challenged mice, CORM-A1 attenuated Th1, Th17, and M1 macrophage response and facilitated Th2 cell differentiation. In addition, CORM-A1 treatment in NOD mice upregulated the regulatory arm of the immune response (M2 macrophages and FoxP3(+) regulatory T cells). Importantly, CORM-A1 interfered with in vitro cytokine-induced beta cell apoptosis through the reduction of cytochrome c and caspase 3 levels. CONCLUSIONS/INTERPRETATION The ability of CORM-A1 to protect mice from developing type 1 diabetes provides a valuable proof of concept for the potential exploitation of controlled CO delivery in clinical settings for the treatment of autoimmune diabetes.
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Affiliation(s)
- Ivana Nikolic
- Department of Immunology, Institute for Biological Research 'Sinisa Stankovic', University of Belgrade, Bul. Despota Stefana 142, 11060, Belgrade, Serbia
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Saksida T, Nikolic I, Vujicic M, Nilsson UJ, Leffler H, Lukic ML, Stojanovic I, Stosic-Grujicic S. Galectin-3 deficiency protects pancreatic islet cells from cytokine-triggered apoptosis in vitro. J Cell Physiol 2013; 228:1568-76. [PMID: 23280610 DOI: 10.1002/jcp.24318] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Accepted: 12/19/2012] [Indexed: 11/10/2022]
Abstract
Beta cell apoptosis is a hallmark of diabetes. Since we have previously shown that galectin-3 deficient (LGALS3(-/-) ) mice are relatively resistant to diabetes induction, the aim of this study was to examine whether beta cell apoptosis depends on the presence of galectin-3 and to delineate the underlying mechanism. Deficiency of galectin-3, either hereditary or induced through application of chemical inhibitors, β-lactose or TD139, supported survival and function of islet beta cells compromised by TNF-α + IFN-γ + IL-1β stimulus. Similarly, inhibition of galectin-3 by β-lactose or TD139 reduced cytokine-triggered apoptosis of beta cells, leading to conclusion that endogenous galectin-3 propagates beta apoptosis in the presence of an inflammatory milieu. Exploring apoptosis-related molecules expression in primary islet cells before and after treatment with cytokines we found that galectin-3 ablation affected the expression of major components of mitochondrial apoptotic pathway, such as BAX, caspase-9, Apaf, SMAC, caspase-3, and AIF. In contrast, anti-apoptotic molecules Bcl-2 and Bcl-XL were up-regulated in LGALS3(-/-) islet cells when compared to wild-type (WT) counterparts (C57BL/6), resulting in increased ratio of anti-apoptotic versus pro-apoptotic molecules. However, Fas-triggered apoptotic pathway as well as extracellular signal-regulated kinase 1/2 (ERK1/2) was not influenced by LGALS-3 deletion. All together, these results point to an important role of endogenous galectin-3 in beta cell apoptosis in the inflammatory milieu that occurs during diabetes pathogenesis and implicates impairment of mitochondrial apoptotic pathway as a key event in protection from beta cell apoptosis in the absence of galectin-3.
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Affiliation(s)
- Tamara Saksida
- Department of Immunology, Institute for Biological Research Siniša Stanković, University of Belgrade, Belgrade, Serbia
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Nikolic I, Vujicic M, Saksida T, Berki T, Stosic-Grujicic S, Stojanovic I. The role of endogenous glucocorticoids in glucose metabolism and immune status of MIF-deficient mice. Eur J Pharmacol 2013; 714:498-506. [DOI: 10.1016/j.ejphar.2013.06.037] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2013] [Revised: 06/14/2013] [Accepted: 06/21/2013] [Indexed: 01/01/2023]
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Saksida T, Miljkovic D, Timotijevic G, Stojanovic I, Mijatovic S, Fagone P, Mangano K, Mammana S, Farina C, Ascione E, Maiello V, Nicoletti F, Stosic-Grujicic S. Apotransferrin inhibits interleukin-2 expression and protects mice from experimental autoimmune encephalomyelitis. J Neuroimmunol 2013; 262:72-8. [PMID: 23890777 DOI: 10.1016/j.jneuroim.2013.07.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 06/07/2013] [Accepted: 07/02/2013] [Indexed: 02/05/2023]
Abstract
Transferrin (Tf) has a major role in T cell activation and proliferation. Here, we investigated whether Tf exerts immunomodulatory effects on T cells and in development of T-cell driven experimental autoimmune encephalomyelitis (EAE). While treatment of concanavalin A-stimulated splenocytes with apotransferrin (ApoTf) did not affect release of IL-1β, TNF, IFN-γ, IL-17, IL-4, and IL-10, it markedly and dose-dependently down-regulated synthesis of IL-2 in these cells. ApoTf also inhibited IL-2 generation in purified CD3+ T cells and the effect was accompanied with down-regulation of MAPK p44/42 and NFκB signaling. Despite impeded IL-2 release, proliferation of splenocytes was not inhibited by ApoTf. Importantly, ApoTf ameliorated EAE in mice and significantly reduced ex vivo IL-2 production in proteolipid protein-specific lymphocytes. Thus ApoTf may be a promising beneficial agent for multiple sclerosis.
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Affiliation(s)
- Tamara Saksida
- Department of Immunology, Institute for Biological Research "Siniša Stanković", University of Belgrade, Serbia
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Saksida T, Stosic-Grujicic S, Stojanovic I. The role of macrophage migration inhibitory factor in obesity-associated type 2 diabetes in mice. ARCH BIOL SCI 2013. [DOI: 10.2298/abs1302499s] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Macrophage migration inhibitory factor (MIF) is implicated in the
pathogenesis of several inflammationrelated diseases, including obesity and
type 2 diabetes (T2D). However, MIF deficiency itself promotes obesity and
glucose intolerance in mice. Here we show that the introduction of a high-fat
diet (HFD) further aggravates the parameters of obesity-associated T2D:
weight gain and glucose intolerance. Furthermore, in contrast to MIF-KO mice
on standard chow, HFD-fed MIF-KO mice develop insulin resistance. Although
the clinical signs of obesity-associated T2D are upgraded, inflammation in
MIF-deficient mice on HFD is significantly lower. These results imply that
MIF possesses a complex role in glucose metabolism and the development of
obesity-related T2D. However, the downregulation of inflammation upon MIF
inhibition could be a useful tool in short-term T2D therapy for preventing
pancreatic islet deterioration.
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Affiliation(s)
- Tamara Saksida
- Department of Immunology, Institute for Biological Research “Siniša Stanković”, Belgrade
| | | | - Ivana Stojanovic
- Department of Immunology, Institute for Biological Research “Siniša Stanković”, Belgrade
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Stojanovic I, Saksida T, Timotijevic G, Sandler S, Stosic-Grujicic S. Macrophage migration inhibitory factor (MIF) enhances palmitic acid- and glucose-induced murine beta cell dysfunction and destruction in vitro. Growth Factors 2012; 30:385-93. [PMID: 23137174 DOI: 10.3109/08977194.2012.734506] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Although several reports suggest a potentially deleterious role of macrophage migration inhibitory factor (MIF) in type 2 diabetes (T2D) pathology, it is still unclear how this pro-inflammatory cytokine acts on pancreatic beta cells. The aim of the present study was to evaluate MIF effects on murine beta cells in the in vitro settings mimicking T2D-associated conditions. Results indicate that recombinant MIF further increased apoptosis of pancreatic islets or MIN6 cells upon exposure to palmitic acid or glucose. This was accompanied by upregulation of several pro-apoptotic molecules. Furthermore, MIF potentiated nutrient-induced islet cell dysfunction, as revealed by lower glucose oxidation rate, ATP content, and depolarized mitochondrial membrane. The final outcome was potentiation of mitochondrial apoptotic pathway. The observed upregulation of nutrient-induced islet cell dysfunction and apoptosis by MIF implicates that silencing MIF may be beneficial for maintaining integrity of endocrine pancreas in obesity-associated T2D.
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Affiliation(s)
- Ivana Stojanovic
- Department of Immunology, Institute for Biological Research "Sinisa Stankovic", University of Belgrade, Serbia.
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Mangano K, Fagone P, Di Mauro M, Ascione E, Maiello V, Milicic T, Jotic A, Lalic NM, Saksida T, Stojanovic I, Selmi C, Farina C, Stosic-Grujicic S, Meroni P, Nicoletti F. The immunobiology of apotransferrin in type 1 diabetes. Clin Exp Immunol 2012; 169:244-52. [PMID: 22861364 DOI: 10.1111/j.1365-2249.2012.04619.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
The transferrin (Tf) family of iron binding proteins includes important endogenous modulators of the immune function that may modulate autoimmune diseases. To define more clearly the role of apotransferrin (apoTf) in type 1 diabetes we determined the impact of this protein on type 1 diabetes as investigated in islet cells, animal models and patient sera. First, we demonstrated that recombinant apoTf counteracts the cytokine-induced death of murine pancreatic islet cells. Secondly, human apoTf administration favourably influences the course of type 1 diabetes in animal models, resulting in protection against disease development that was associated with reduction of insulitis and reduced levels of proinflammatory cytokines. Finally, we confirmed that patients with newly diagnosed type 1 diabetes manifest significantly lower apoTf serum levels compared to healthy controls and patients with long-lasting disease. In conclusion, our data suggest the apoTf pivotal role in the perpetuation of type 1 diabetes pathology.
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Affiliation(s)
- K Mangano
- Department of Bio-Medical Sciences, Via Androne 83, 95124, Catania, Italy
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Stojanovic I, Saksida T, Nikolic I, Nicoletti F, Stosic-Grujicic S. Macrophage migration inhibitory factor deficiency protects pancreatic islets from cytokine-induced apoptosis in vitro. Clin Exp Immunol 2012; 169:156-63. [PMID: 22774990 DOI: 10.1111/j.1365-2249.2012.04607.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
During pathogenesis of diabetes, pancreatic islets are exposed to high levels of cytokines and other inflammatory mediators that induce deterioration of insulin-producing beta cells. Macrophage migration inhibitory factor (MIF) plays a key role in the onset and development of several immunoinflammatory diseases and also controls apoptotic cell death. Because the occurrence of apoptosis plays a pathogenetic role in beta cell death during type 1 diabetes development and MIF is expressed in beta cells, we explored the influence of MIF deficiency on cytokine-induced apoptosis in pancreatic islets. The results indicated clearly that elevated MIF secretion preceded C57BL/6 pancreatic islets death induced by interferon (IFN)-γ + tumour necrosis factor (TNF)-α + interleukin (IL)-1β. Consequently, MIF-deficient [MIF-knock-out (KO)] pancreatic islets or islet cells showed significant resistance to cytokine-induced death than those isolated from C57BL/6 mice. Furthermore, upon exposure to cytokines pancreatic islets from MIF-KO mice maintained normal insulin expression and produced less cyclooxygenase-2 (COX-2) than those from wild-type C57BL6 mice. The final outcome of cytokine-induced islet apoptosis in islets from wild-type mice was the activation of mitochondrial membrane pore-forming protein Bcl-2-associated X protein and effector caspase 3. In contrast, these apoptotic mediators remained at normal levels in islets from MIF-KO mice suggesting that MIF absence prevented initiation of the mitochondrial apoptotic pathway. Additionally, the protection from apoptosis was also mediated by up-regulation of prosurvival kinase extracellular-regulated kinase 1/2 in MIF-KO islets. These data indicate that MIF is involved in the propagation of pancreatic islets apoptosis probably via nuclear factor-κB and mitochondria-related proteins.
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Affiliation(s)
- I Stojanovic
- Department of Immunology, Institute for Biological Research Siniša Stanković, University of Belgrade, Belgrade, Serbia.
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Miljković D, Poljarević JM, Petković F, Blaževski J, Momčilović M, Nikolić I, Saksida T, Stošić-Grujičić S, Grgurić-Šipka S, Sabo TJ. Novel octahedral Pt(IV) complex with di-n-propyl-(S,S)-ethylenediamine-N,N′-di-2-(3-cyclohexyl)propanoato ligand exerts potent immunomodulatory effects. Eur J Med Chem 2012; 47:194-201. [DOI: 10.1016/j.ejmech.2011.10.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 10/18/2011] [Accepted: 10/21/2011] [Indexed: 11/15/2022]
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