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Alfahel L, Gschwendtberger T, Kozareva V, Dumas L, Gibbs R, Kertser A, Baruch K, Zaccai S, Kahn J, Thau-Habermann N, Eggenschwiler R, Sterneckert J, Hermann A, Sundararaman N, Vaibhav V, Van Eyk JE, Rafuse VF, Fraenkel E, Cantz T, Petri S, Israelson A. Targeting low levels of MIF expression as a potential therapeutic strategy for ALS. Cell Rep Med 2024; 5:101546. [PMID: 38703766 PMCID: PMC11148722 DOI: 10.1016/j.xcrm.2024.101546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 11/03/2023] [Accepted: 04/10/2024] [Indexed: 05/06/2024]
Abstract
Mutations in SOD1 cause amyotrophic lateral sclerosis (ALS), a neurodegenerative disease characterized by motor neuron (MN) loss. We previously discovered that macrophage migration inhibitory factor (MIF), whose levels are extremely low in spinal MNs, inhibits mutant SOD1 misfolding and toxicity. In this study, we show that a single peripheral injection of adeno-associated virus (AAV) delivering MIF into adult SOD1G37R mice significantly improves their motor function, delays disease progression, and extends survival. Moreover, MIF treatment reduces neuroinflammation and misfolded SOD1 accumulation, rescues MNs, and corrects dysregulated pathways as observed by proteomics and transcriptomics. Furthermore, we reveal low MIF levels in human induced pluripotent stem cell-derived MNs from familial ALS patients with different genetic mutations, as well as in post mortem tissues of sporadic ALS patients. Our findings indicate that peripheral MIF administration may provide a potential therapeutic mechanism for modulating misfolded SOD1 in vivo and disease outcome in ALS patients.
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Affiliation(s)
- Leenor Alfahel
- Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, P.O.B. 653, Beer Sheva 84105, Israel; The School of Brain Sciences and Cognition, Ben-Gurion University of the Negev, P.O.B. 653, Beer Sheva 84105, Israel
| | - Thomas Gschwendtberger
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany; Center for Systems Neuroscience, Hannover Medical School, 30625 Hannover, Germany
| | - Velina Kozareva
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Laura Dumas
- Department of Medical Neuroscience, Dalhousie University, Halifax, Nova Scotia B3H 1X5, Canada; Brain Repair Centre, Life Sciences Research Institute, Halifax, Nova Scotia B3H 4R2, Canada
| | - Rachel Gibbs
- Department of Medical Neuroscience, Dalhousie University, Halifax, Nova Scotia B3H 1X5, Canada; Brain Repair Centre, Life Sciences Research Institute, Halifax, Nova Scotia B3H 4R2, Canada
| | | | - Kuti Baruch
- ImmunoBrain Checkpoint Ltd., Ness Ziona 7404905, Israel
| | - Shir Zaccai
- Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, P.O.B. 653, Beer Sheva 84105, Israel; The School of Brain Sciences and Cognition, Ben-Gurion University of the Negev, P.O.B. 653, Beer Sheva 84105, Israel
| | - Joy Kahn
- Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, P.O.B. 653, Beer Sheva 84105, Israel; The School of Brain Sciences and Cognition, Ben-Gurion University of the Negev, P.O.B. 653, Beer Sheva 84105, Israel
| | | | - Reto Eggenschwiler
- Gastroenterology, Hepatology and Endocrinology Department, Hannover Medical School, 30625 Hannover, Germany; Translational Hepatology and Stem Cell Biology, REBIRTH - Research Center for Translational Regenerative Medicine and Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, 30625 Hannover, Germany
| | - Jared Sterneckert
- Center for Regenerative Therapies Dresden, Technical University Dresden, 01307 Dresden, Germany
| | - Andreas Hermann
- Translational Neurodegeneration Section, "Albrecht Kossel", Department of Neurology, University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany; Deutsches Zentrum für Neurodegenerative Erkrankungen (DZNE) Rostock/Greifswald, 18147 Rostock, Germany; Center for Transdisciplinary Neurosciences Rostock (CTNR), University Medical Center Rostock, University of Rostock, 18147 Rostock, Germany
| | - Niveda Sundararaman
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Advanced Clinical Biosystems Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Vineet Vaibhav
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Advanced Clinical Biosystems Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Jennifer E Van Eyk
- Smidt Heart Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA; Advanced Clinical Biosystems Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA 90048, USA
| | - Victor F Rafuse
- Department of Medical Neuroscience, Dalhousie University, Halifax, Nova Scotia B3H 1X5, Canada; Brain Repair Centre, Life Sciences Research Institute, Halifax, Nova Scotia B3H 4R2, Canada
| | - Ernest Fraenkel
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Tobias Cantz
- Gastroenterology, Hepatology and Endocrinology Department, Hannover Medical School, 30625 Hannover, Germany; Translational Hepatology and Stem Cell Biology, REBIRTH - Research Center for Translational Regenerative Medicine and Department of Gastroenterology, Hepatology and Endocrinology, Hannover Medical School, 30625 Hannover, Germany; Max Planck Institute for Molecular Biomedicine, Cell and Developmental Biology, 48149 Münster, Germany
| | - Susanne Petri
- Department of Neurology, Hannover Medical School, 30625 Hannover, Germany; Center for Systems Neuroscience, Hannover Medical School, 30625 Hannover, Germany
| | - Adrian Israelson
- Department of Physiology and Cell Biology, Faculty of Health Sciences, Ben-Gurion University of the Negev, P.O.B. 653, Beer Sheva 84105, Israel; The School of Brain Sciences and Cognition, Ben-Gurion University of the Negev, P.O.B. 653, Beer Sheva 84105, Israel.
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Kong Y, Yang N, Luo Z, Huang R, Li Q. Key Cell Types and Biomarkers in Heart Failure Identified through Analysis of Single-Cell and Bulk RNA Sequencing Data. Mediators Inflamm 2023; 2023:8384882. [PMID: 38169915 PMCID: PMC10761229 DOI: 10.1155/2023/8384882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 10/26/2023] [Accepted: 12/07/2023] [Indexed: 01/05/2024] Open
Abstract
Heart failure (HF) is a complex clinical syndrome resulting from various cardiac diseases and a significant medical issue worldwide. Although the role of inflammation in HF pathogenesis is well-known, the specific cell types and regulatory molecules involved remain poorly understood. Here, we identified key cell types and novel biomarkers via an analysis of single-cell and bulk RNA sequencing data obtained from patients with two major HF types of ischemic cardiomyopathy and dilated cardiomyopathy. Myeloid cells were identified as the primary cell population involved in HF through cellular fraction and gene set enrichment analysis. Additionally, differential analysis of myeloid cells revealed crosstalk between cellular communication and cytokine-regulated immune responses in HF, with the MIF pathway emerging as a crucial immune regulatory pathway. The CD74/CXCR4 receptor complex in myeloid cell subgroup Mφ2 was significantly upregulated, potentially acting as a crucial regulator in HF. Upon receiving the MIF signal molecule, the CD74/CXCR4 receptor can activate NF-κB signaling to produce chemokines and thereby enhance the inflammatory response. CD74 and CXCR4 may serve as biomarkers and treatment targets for HF.
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Affiliation(s)
- Ying Kong
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, Guangdong, China
- Guangdong Provincial Engineering and Technology Research Center of Biopharmaceuticals, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Ning Yang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Zhiqing Luo
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Ruiting Huang
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, Guangdong, China
| | - Quhuan Li
- School of Biology and Biological Engineering, South China University of Technology, Guangzhou 510006, Guangdong, China
- Guangdong Provincial Engineering and Technology Research Center of Biopharmaceuticals, South China University of Technology, Guangzhou 510006, Guangdong, China
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3
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Localization of Chicken Rab22a in Cells and Its Relationship to BF or Ii Molecules and Genes. Animals (Basel) 2023; 13:ani13030387. [PMID: 36766276 PMCID: PMC9913282 DOI: 10.3390/ani13030387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023] Open
Abstract
Rab22a is an important small GTPase protein the molecule that is involved in intracellular transportation and regulation of proteins. It also plays an important role in antigens uptake, transportation, regulation of endosome morphology, and also regulates the transport of antigens to MHC (Major Histocompatibility Complex) molecules. To investigate the role of Rab22a, the intracellular co-localization of chicken Rab22a (cRab22a) molecule and its relationship to BF and chicken invariant chain (cIi) molecules was studied. A 3D protein structure of Rab22a was constructed by using informatics tools (DNASTAR 4.0 and DNAMAN). Based on the model, the corresponding recombinant eukaryotic plasmids were constructed by point mutations in the protein's structural domains. HEK 293T cells were co-transfected with plasmids pEGFP-C1-cIi to observe the intracellular co-localization. Secondly, the DC2.4 Mouse Dendritic Cell and Murine RAW 264.7 cells were transfected with recombinant plasmids of pmCherry-cRab22a and pmCherry-mRab22a respectively. Subsequently, the intracellular localization of cRab22a in early and late endosomes was observed with specific antibodies against EEA1 and LAMP1 respectively. For gene expression-based studies, the cRab22a gene was down-regulated and up-regulated in HD11 cells, following the detection of transcription levels of the BFa (MHCIa) and cIi genes by real-time quantitative PCR (RT-qPCR). The interactions of the cRab22a gene with BFa and cIi were detected by co-immunoprecipitation (Co-IP) and Western blot. The results showed that the protein structures of chicken and mouse Rab22a were highly homologous (95.4%), and both localize to the early and late endosomes. Ser41 and Tyr74 are key amino acids in the Switch regions of Rab22a which maintain its intracellular localization. The down-regulation of cRab22a gene expression significantly reduced (p < 0.01) the transcription of BFa (MHCIa) and cIi in HD11 cells. However, when the expression of the cRab22a gene was increased 55 times as compared to control cells, the expression of the BFa (MHCIa) gene was increased 1.7 times compared to the control cells (p < 0.01), while the expression of the cIi gene did not significantly differ from control (p > 0.05). Western blot results showed that cRab22a could not directly bind to BFa and cIi. So, cRab22a can regulate BFa and cIi protein molecules indirectly. It is concluded that cRab22a was localized with cIi in the endosome. The Switch regions of cRab22a are the key domains that affect intracellular localization and colocalization of the cIi molecule.
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Pandey KN. Guanylyl cyclase/natriuretic peptide receptor-A: Identification, molecular characterization, and physiological genomics. Front Mol Neurosci 2023; 15:1076799. [PMID: 36683859 PMCID: PMC9846370 DOI: 10.3389/fnmol.2022.1076799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Accepted: 12/02/2022] [Indexed: 01/06/2023] Open
Abstract
The natriuretic peptides (NPs) hormone family, which consists mainly of atrial, brain, and C-type NPs (ANP, BNP, and CNP), play diverse roles in mammalian species, ranging from renal, cardiac, endocrine, neural, and vascular hemodynamics to metabolic regulations, immune responsiveness, and energy distributions. Over the last four decades, new data has transpired regarding the biochemical and molecular compositions, signaling mechanisms, and physiological and pathophysiological functions of NPs and their receptors. NPs are incremented mainly in eliciting natriuretic, diuretic, endocrine, vasodilatory, and neurological activities, along with antiproliferative, antimitogenic, antiinflammatory, and antifibrotic responses. The main locus responsible in the biological and physiological regulatory actions of NPs (ANP and BNP) is the plasma membrane guanylyl cyclase/natriuretic peptide receptor-A (GC-A/NPRA), a member of the growing multi-limbed GC family of receptors. Advances in this field have provided tremendous insights into the critical role of Npr1 (encoding GC-A/NPRA) in the reduction of fluid volume and blood pressure homeostasis, protection against renal and cardiac remodeling, and moderation and mediation of neurological disorders. The generation and use of genetically engineered animals, including gene-targeted (gene-knockout and gene-duplication) and transgenic mutant mouse models has revealed and clarified the varied roles and pleiotropic functions of GC-A/NPRA in vivo in intact animals. This review provides a chronological development of the biochemical, molecular, physiological, and pathophysiological functions of GC-A/NPRA, including signaling pathways, genomics, and gene regulation in both normal and disease states.
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5
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Integrative Bioinformatics Analysis of mRNA Expression Profiles of Mice to Explore the Key Genes Involved in Crim1 Mutation-Induced Congenital Cataracts. Biochem Genet 2022:10.1007/s10528-022-10323-3. [PMID: 36586009 PMCID: PMC10372119 DOI: 10.1007/s10528-022-10323-3] [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: 10/15/2022] [Accepted: 12/16/2022] [Indexed: 01/01/2023]
Abstract
Crim1 has been implicated in cataracts in mice and is of great importance in the development of the eye in both humans and mice. Therefore, we aimed to clarify how Crim1 mutations affect lens development and the molecular mechanism of cataracts in mice through comprehensive bioinformatics analysis. The microarray chip was downloaded from the GEO database to obtain the gene expression profile data set. Differentially expressed genes (DEGs) were screened using the limma package. GO and KEGG analyses of DEGs were performed using the DAVID database. Then, we established the protein-protein interaction (PPI) network in Cytoscape. Next, we used MCODE to analyze the data. We obtained 750 DEGs in total, including 407 upregulated DEGs and 343 downregulated DEGs. GO analysis showed that the DEGs were mainly related to biological processes, such as apoptosis, cell translation and the immune system. KEGG analysis showed that the enriched functions and pathways were related to the processing and presentation of ribosomes, lysosomes, and antigens. We identified 18 HUB genes, among which four core genes, C1qa, C1qb, C1qc, and Cd74, were closely related to congenital cataracts induced by Crim1 mutation. This study reveals the molecular pathogenesis of congenital cataracts induced by Crim1, and this information is expected to facilitate clinical genetic testing, molecular diagnosis, prognosis, and individualized chemotherapy for congenital cataracts (CC).
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6
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Li Q, Jiang Y, Song N, Zhou B, Li Z, Lin L. An Immune-Related Genetic Feature Depicted the Heterogeneous Nature of Lung Adenocarcinoma and Squamous Cell Carcinoma and Their Distinctive Predicted Drug Responses. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:8447083. [PMID: 36071867 PMCID: PMC9442502 DOI: 10.1155/2022/8447083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 11/29/2022]
Abstract
One of the primary causes of global cancer-associated mortality is lung cancer (LC). Current improvements in the management of LC rely mainly on the advancement of patient stratification, both molecularly and clinically, to achieve the maximal therapeutic benefit, while most LC screening protocols remain underdeveloped. In this research, we first employed two algorithms (ESTIMATE and xCell) to calculate the immune/stromal infiltration scores. This helped identify the altered immune infiltration landscapes in lung adenocarcinoma (LUAD) and squamous cell carcinoma (LUSC). Afterward, based on their immune-related characteristics, we successfully stratified the LUAD and LUSC into 2 and 3 clusters, respectively. Different from the conventional bioinformatic approaches that start from the investigation of differential expression of single genes, differentially enriched curated gene sets identified through gene set variation analyses (GSVA) were curated, and gene names were reconstructed afterward. Furthermore, weighted gene correlation network analyses (WGCNA) were used to reveal hub genes highly connected with the clustering process. Actual expression levels of critical hub genes among different clusters were compared and so were the functional pathways these genes enriched into. Lastly, a computational method was applied to predict and compare the responses of each cluster to primary therapeutic agents. The heterogeneity presented in our study, along with the drug responses expected for identified clusters, may shed light on future exploration of combination immunochemotherapy that facilitates the optimization of individualized therapy.
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Affiliation(s)
- Qiuyuan Li
- Department of Thoracic Surgery, Tongji University Shanghai Pulmonary Hospital, No. 507 Zhengmin Rd., Shanghai, China
| | - Yan Jiang
- Department of Thoracic Surgery, Tongji University Shanghai Pulmonary Hospital, No. 507 Zhengmin Rd., Shanghai, China
| | - Nan Song
- Department of Thoracic Surgery, Tongji University Shanghai Pulmonary Hospital, No. 507 Zhengmin Rd., Shanghai, China
| | - Bin Zhou
- Department of Thoracic Surgery, Tongji University Shanghai Pulmonary Hospital, No. 507 Zhengmin Rd., Shanghai, China
| | - Zhao Li
- Department of Thoracic Surgery, Tongji University Shanghai Pulmonary Hospital, No. 507 Zhengmin Rd., Shanghai, China
| | - Lei Lin
- Department of Thoracic Surgery, Tongji University Shanghai Pulmonary Hospital, No. 507 Zhengmin Rd., Shanghai, China
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7
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Nothnick WB, Graham A. Dissecting the miR-451a-Mif Pathway in Endometriosis Pathophysiology Using a Syngeneic Mouse Model: Temporal Expression of Lesion Mif Receptors, Cd74 and Cxcr4. Biomedicines 2022; 10:1699. [PMID: 35885004 PMCID: PMC9313350 DOI: 10.3390/biomedicines10071699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/05/2022] [Accepted: 07/09/2022] [Indexed: 01/08/2023] Open
Abstract
Endometriosis is an enigmatic disease characterized by pain and infertility in which endometrial tissue grows in ectopic locations, predominantly the pelvic cavity. The pathogenesis and pathophysiology of endometriosis is complex and postulated to involve alterations in inflammatory, cell proliferation and post-transcriptional regulatory pathways among others. Our understanding on the pathogenesis and pathophysiology of endometriosis is further complicated by the fact that endometriosis can only be diagnosed by laparoscopy only after the disease has manifested. This makes it difficult to understand the true pathogenesis as a cause-and-effect relationship is difficult to ascertain. To aid in our understanding on endometriosis pathogenesis and pathophysiology, numerous rodent models have been developed. In this case, we discuss further assessment of a miR-451a-macrophage migration inhibitory factor (Mif) pathway which contributes to lesion survival. Specifically, we evaluate the temporal expression of lesion Mif receptors, Cd74 and Cxcr4 using host mice which express wild-type or miR-451a deficient lesions. Similar to that observed in humans and a non-human primate model of endometriosis, Cd74 expression is elevated in lesion tissue in a temporal fashion while that of Cxcr4 shows minimal increase during initial lesion establishment but is reduced later during the lifespan. Absence of miR-451a during initial lesion establishment is associated with an augmentation of Cd74, but no Cxcr4 expression. The data obtained in this study provide further support for a role of Mif receptors, Cd74 and Cxcr4 in the pathophysiology of endometriosis.
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Affiliation(s)
- Warren B. Nothnick
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA;
- Department of Obstetrics and Gynecology, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Center for Reproductive Sciences, Institute for Reproduction and Perinatal Research, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Amanda Graham
- Department of Molecular and Integrative Physiology, University of Kansas Medical Center, Kansas City, KS 66160, USA;
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Ives A, Le Roy D, Théroude C, Bernhagen J, Roger T, Calandra T. Macrophage migration inhibitory factor promotes the migration of dendritic cells through CD74 and the activation of the Src/PI3K/myosin II pathway. FASEB J 2021; 35:e21418. [PMID: 33774873 DOI: 10.1096/fj.202001605r] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 01/14/2021] [Accepted: 01/21/2021] [Indexed: 12/18/2022]
Abstract
Constitutively expressed by innate immune cells, the cytokine macrophage migration inhibitory factor (MIF) initiates host immune responses and drives pathogenic responses in infectious, inflammatory, and autoimmune diseases. Dendritic cells (DCs) express high levels of MIF, but the role of MIF in DC function remains poorly characterized. As migration is critical for DC immune surveillance, we investigated whether MIF promoted the migration of DCs. In classical transwell experiments, MIF-/- bone marrow-derived DCs (BMDCs) or MIF+/+ BMDCs treated with ISO-1, an inhibitor of MIF, showed markedly reduced spontaneous migration and chemotaxis. CD74-/- BMDCs that are deficient in the ligand-binding component of the cognate MIF receptor exhibited a migration defect similar to that of MIF-/- BMDCs. Adoptive transfer experiments of LPS-matured MIF+/+ and MIF-/- and of CD74+/+ and CD74-/- BMDCs injected into the hind footpads of homologous or heterologous mice showed that the autocrine and paracrine MIF activity acting via CD74 contributed to the recruitment of DCs to the draining lymph nodes. Mechanistically, MIF activated the Src/PI3K signaling pathway and myosin II complexes, which were required for the migration of BMDCs. Altogether, these data show that the cytokine MIF exerts chemokine-like activity for DC motility and trafficking.
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Affiliation(s)
- Annette Ives
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Didier Le Roy
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Charlotte Théroude
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Jürgen Bernhagen
- Chair of Vascular Biology, Institute for Stroke and Dementia Research (ISD), Klinikum der Universität München (KUM), Ludwig-Maximilians-University (LMU), Munich, Germany.,Munich Cluster for Systems Neurology (SyNergy), Munich, Germany
| | - Thierry Roger
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Thierry Calandra
- Infectious Diseases Service, Department of Medicine, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
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9
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Szczęśniak P, Henke T, Fröhlich S, Plessmann U, Urlaub H, Leng L, Bucala R, Grosse R, Meinhardt A, Klug J. Extracellular MIF, but not its homologue D-DT, promotes fibroblast motility independently of its receptor complex CD74/CD44. J Cell Sci 2021; 134:jcs.217356. [PMID: 33328325 DOI: 10.1242/jcs.217356] [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: 03/08/2018] [Accepted: 12/07/2020] [Indexed: 11/20/2022] Open
Abstract
Macrophage migration inhibitory factor (MIF) and its homologue D-dopachrome tautomerase (D-DT) are widely expressed pro-inflammatory cytokines with chemokine-like functions that coordinate a wide spectrum of biological activities, such as migration. Here, we biotin-tagged intracellular MIF/D-DT in vivo to identify important cytosolic interactors and found a plethora of actin cytoskeleton-associated proteins. Although the receptor complex between CD74 and CD44 (CD74/CD44) is essential for signalling transduction in fibroblasts via extracellular MIF/D-DT, our interactome data suggested direct effects. We, thus, investigated whether MIF/D-DT can modulate cell migration independently of CD74/CD44. To distinguish between receptor- and non-receptor-mediated motility, we used fibroblasts that are either deficient or that express CD74/CD44 proteins, and treated them with recombinant MIF/D-DT. Interestingly, only MIF could stimulate chemokinesis in the presence or absence of CD74/CD44. The pro-migratory effects of MIF depended on lipid raft/caveolae-mediated but not clathrin-mediated endocytosis, on its tautomerase activity and, probably, on its thiol protein oxidoreductase activity. As MIF treatment restrained actin polymerisation in vitro, our findings establish a new intracellular role for MIF/D-DT in driving cell motility through modulation of the actin cytoskeleton.
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Affiliation(s)
- Paweł Szczęśniak
- Department of Anatomy and Cell Biology, Justus Liebig University, Aulweg 123, Gießen 35392, Germany
| | - Tamara Henke
- Department of Anatomy and Cell Biology, Justus Liebig University, Aulweg 123, Gießen 35392, Germany
| | - Suada Fröhlich
- Department of Anatomy and Cell Biology, Justus Liebig University, Aulweg 123, Gießen 35392, Germany
| | - Uwe Plessmann
- Max Planck Institute for Biophysical Chemistry, Bioanalytical Mass Spectrometry Group, Am Fassberg 11, 37077 Göttingen, Germany
| | - Henning Urlaub
- Max Planck Institute for Biophysical Chemistry, Bioanalytical Mass Spectrometry Group, Am Fassberg 11, 37077 Göttingen, Germany.,Institute for Clinical Chemistry, Research Group 'Bioanalytics', University Medical Center Göttingen, Robert-Koch-Straße 40, 37075 Göttingen, Germany
| | - Lin Leng
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Richard Bucala
- Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Robert Grosse
- Institute of Experimental and Clinical Pharmacology and Toxicology, University of Freiburg, Medical Faculty, Albertstraße 25, 79104 Freiburg, Germany
| | - Andreas Meinhardt
- Department of Anatomy and Cell Biology, Justus Liebig University, Aulweg 123, Gießen 35392, Germany
| | - Jörg Klug
- Department of Anatomy and Cell Biology, Justus Liebig University, Aulweg 123, Gießen 35392, Germany
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10
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Barthel R, Fedorchenko O, Velmans T, Rosen N, Nguyen PH, Reinart N, Florin A, Herling M, Hallek M, Fingerle-Rowson G. CD74 is dispensable for development of chronic lymphocytic leukemia in Eµ-TCL1 transgenic mice. Leuk Lymphoma 2020; 61:2799-2810. [PMID: 32667245 DOI: 10.1080/10428194.2020.1791851] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
CD74 is a surface protein expressed on immune cells, which acts as receptor for the chemokine macrophage migration inhibitory factor (MIF). Signaling via the MIF/CD74-axis has been reported to be important for the pathogenesis of chronic lymphocytic leukemia (CLL). We wanted to clarify the role of CD74 in MIF-induced signaling/leukemic development. In Eμ-TCL1 transgenic mice, occurrence of the leukemic phenotype was associated with increased surface CD74 expression. Eμ-TCL1+/+Cd74-/- mice showed similar kinetics and clinical features of CLL development as Eμ-TCL1+/+ mice. MIF stimulation of leukemic splenocytes led to AKT activation in a CD74-dependent manner. AKT activation was reduced in Cd74-deficient splenocytes in the presence of the oncogenic TCL1-transgene. Tumor cell apoptosis/proliferation were unaffected in Eμ-TCL1+/+Cd74-/- mice. Our data suggest that the need for active CD74 signaling is overcome in the leukemic context of TCL1-driven CLL, and that CD74 may have a dispensable role for CLL pathogenesis in this model.
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Affiliation(s)
- Romy Barthel
- University of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Germany.,CECAD Center of Excellence on 'Cellular Stress Responses in Aging-Associated Diseases', Cologne, Germany.,CMMC Center of Molecular Medicine Cologne, Cologne, Germany
| | - Oleg Fedorchenko
- University of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Germany.,CECAD Center of Excellence on 'Cellular Stress Responses in Aging-Associated Diseases', Cologne, Germany.,CMMC Center of Molecular Medicine Cologne, Cologne, Germany
| | - Tanja Velmans
- University of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Germany.,CECAD Center of Excellence on 'Cellular Stress Responses in Aging-Associated Diseases', Cologne, Germany.,CMMC Center of Molecular Medicine Cologne, Cologne, Germany
| | - Natascha Rosen
- University of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Germany.,CECAD Center of Excellence on 'Cellular Stress Responses in Aging-Associated Diseases', Cologne, Germany.,CMMC Center of Molecular Medicine Cologne, Cologne, Germany
| | - Phuong-Hien Nguyen
- University of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Germany.,CECAD Center of Excellence on 'Cellular Stress Responses in Aging-Associated Diseases', Cologne, Germany.,CMMC Center of Molecular Medicine Cologne, Cologne, Germany
| | - Nina Reinart
- University of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Germany.,CECAD Center of Excellence on 'Cellular Stress Responses in Aging-Associated Diseases', Cologne, Germany.,CMMC Center of Molecular Medicine Cologne, Cologne, Germany
| | - Alexandra Florin
- Institute of Pathology, University Hospital of Cologne, Cologne, Germany
| | - Marco Herling
- University of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Germany.,CECAD Center of Excellence on 'Cellular Stress Responses in Aging-Associated Diseases', Cologne, Germany.,CMMC Center of Molecular Medicine Cologne, Cologne, Germany
| | - Michael Hallek
- University of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Germany.,CECAD Center of Excellence on 'Cellular Stress Responses in Aging-Associated Diseases', Cologne, Germany.,CMMC Center of Molecular Medicine Cologne, Cologne, Germany
| | - Günter Fingerle-Rowson
- University of Cologne, Department I of Internal Medicine, Center for Integrated Oncology Aachen Bonn Cologne Duesseldorf, Germany.,CECAD Center of Excellence on 'Cellular Stress Responses in Aging-Associated Diseases', Cologne, Germany.,CMMC Center of Molecular Medicine Cologne, Cologne, Germany
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11
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Illescas O, Pacheco-Fernández T, Laclette JP, Rodriguez T, Rodriguez-Sosa M. Immune modulation by the macrophage migration inhibitory factor (MIF) family: D-dopachrome tautomerase (DDT) is not (always) a backup system. Cytokine 2020; 133:155121. [PMID: 32417648 DOI: 10.1016/j.cyto.2020.155121] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 04/29/2020] [Accepted: 05/06/2020] [Indexed: 01/06/2023]
Abstract
Human macrophage migration inhibition factor (MIF) is a protein with cytokine and chemokine properties that regulates a diverse range of physiological functions related to innate immunity and inflammation. Most research has focused on the role of MIF in different inflammatory diseases. D-dopachrome tautomerase (DDT), a different molecule with structural similarities to MIF, which shares receptors and biological functions, has recently been reported, but little is known about its roles and mechanisms. In this review, we sought to understand the similarities and differences between these molecules by summarizing what is known about their different structures, receptors and mechanisms regulating their expression and biological activities with an emphasis on immunological aspects.
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Affiliation(s)
- Oscar Illescas
- Biomedicine Unit, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, MEX C.P. 54090, Mexico
| | - Thalia Pacheco-Fernández
- Biomedicine Unit, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, MEX C.P. 54090, Mexico
| | - Juan P Laclette
- Department of Immunology, Institute of Biomedical Research, Universidad Nacional Autónoma de México (UNAM), Mexico City C.P. 04510, Mexico
| | - Tonathiu Rodriguez
- Biomedicine Unit, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, MEX C.P. 54090, Mexico
| | - Miriam Rodriguez-Sosa
- Biomedicine Unit, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, MEX C.P. 54090, Mexico.
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12
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Wu Y, Xu W, Hou J, Liu Y, Li R, Liu J, Li C, Tang X, Lin L, Pan Y, Zhang D. Porphyromonas gingivalis-Induced MIF Regulates Intercellular Adhesion Molecule-1 Expression in EA.hy926 Cells and Monocyte-Endothelial Cell Adhesion Through the Receptors CD74 and CXCR4. Inflammation 2019; 42:874-883. [PMID: 30506423 PMCID: PMC6527533 DOI: 10.1007/s10753-018-0942-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Porphyromonas gingivalis (P. gingivalis) is an important pathogen that contributes to periodontal disease and causes infections that promote the progression of atherosclerosis. Our previous studies showed that macrophage migration inhibitory factor (MIF) facilitates monocyte adhesion to endothelial cells by regulating the expression of intercellular adhesion molecule-1 (ICAM-1) in P. gingivalis-infected endothelial cells. However, the detailed pathological role of MIF has yet to be elucidated in this context. To explore the functional receptor(s) of MIF that underlie its participation in the pathogenesis of atherosclerosis, we investigated the expression of the chemokine receptors CD74 and CXCR4 in endothelial cells, both of which were shown to be involved in the adhesion of monocytes to endothelial cells pretreated with P. gingivalis. Furthermore, the formation of a MIF, CD74, and CXCR4 ligand-receptor complex was revealed by our immunofluorescence staining and coimmunoprecipitation results. By interacting with the CD74/CXCR4 receptor complex, MIF may act as a crucial regulator of monocyte-endothelial cell adhesion and promote the atherosclerotic plaque formation induced by P. gingivalis.
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Affiliation(s)
- Yun Wu
- Department of Periodontics, School of Stomatology, China Medical University, Heping District, Nanjing North Street No.117, Shenyang, 110002 China
| | - Wanyue Xu
- Department of Periodontics, School of Stomatology, China Medical University, Heping District, Nanjing North Street No.117, Shenyang, 110002 China
| | - Jingya Hou
- Department of Periodontics, School of Stomatology, China Medical University, Heping District, Nanjing North Street No.117, Shenyang, 110002 China
| | - Yanqing Liu
- Department of Periodontics, School of Stomatology, China Medical University, Heping District, Nanjing North Street No.117, Shenyang, 110002 China
| | - Rong Li
- Department of Periodontics, School of Stomatology, China Medical University, Heping District, Nanjing North Street No.117, Shenyang, 110002 China
| | - Jingbo Liu
- Department of Periodontics and Oral Biology, School of
Stomatology, China Medical University, Heping District, Nanjing North Street No.117, Shenyang, 110002 China
| | - Chen Li
- Department of Periodontics and Oral Biology, School of
Stomatology, China Medical University, Heping District, Nanjing North Street No.117, Shenyang, 110002 China
| | - Xiaolin Tang
- Department of Periodontics and Oral Biology, School of
Stomatology, China Medical University, Heping District, Nanjing North Street No.117, Shenyang, 110002 China
| | - Li Lin
- Department of Periodontics and Oral Biology, School of
Stomatology, China Medical University, Heping District, Nanjing North Street No.117, Shenyang, 110002 China
| | - Yaping Pan
- Department of Periodontics and Oral Biology, School of
Stomatology, China Medical University, Heping District, Nanjing North Street No.117, Shenyang, 110002 China
| | - Dongmei Zhang
- Department of Periodontics and Oral Biology, School of
Stomatology, China Medical University, Heping District, Nanjing North Street No.117, Shenyang, 110002 China
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13
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Jankauskas SS, Wong DW, Bucala R, Djudjaj S, Boor P. Evolving complexity of MIF signaling. Cell Signal 2019; 57:76-88. [DOI: 10.1016/j.cellsig.2019.01.006] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 01/17/2019] [Accepted: 01/18/2019] [Indexed: 01/27/2023]
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14
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Mani I, Pandey KN. Emerging concepts of receptor endocytosis and concurrent intracellular signaling: Mechanisms of guanylyl cyclase/natriuretic peptide receptor-A activation and trafficking. Cell Signal 2019; 60:17-30. [PMID: 30951863 DOI: 10.1016/j.cellsig.2019.03.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/27/2019] [Accepted: 03/28/2019] [Indexed: 12/15/2022]
Abstract
Endocytosis is a prominent clathrin-mediated mechanism for concentrated uptake and internalization of ligand-receptor complexes, also known as cargo. Internalization of cargo is the fundamental mechanism for receptor-dependent regulation of cell membrane function, intracellular signal transduction, and neurotransmission, as well as other biological and physiological activities. However, the intrinsic mechanisms of receptor endocytosis and contemporaneous intracellular signaling are not well understood. We review emerging concepts of receptor endocytosis with concurrent intracellular signaling, using a typical example of guanylyl cyclase/natriuretic peptide receptor-A (NPRA) internalization, subcellular trafficking, and simultaneous generation of second-messenger cGMP and signaling in intact cells. We highlight the role of short-signal motifs located in the carboxyl-terminal regions of membrane receptors during their internalization and subsequent receptor trafficking in organelles that are not traditionally studied in this context, including nuclei and mitochondria. This review sheds light on the importance of future investigations of receptor endocytosis and trafficking in live cells and intact animals in vivo in physiological context.
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Affiliation(s)
- Indra Mani
- Department of Physiology, Tulane University Health Sciences Center and School of Medicine, 1430 Tulane Avenue, New Orleans, Louisiana 70112, United States
| | - Kailash N Pandey
- Department of Physiology, Tulane University Health Sciences Center and School of Medicine, 1430 Tulane Avenue, New Orleans, Louisiana 70112, United States.
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15
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Soppert J, Kraemer S, Beckers C, Averdunk L, Möllmann J, Denecke B, Goetzenich A, Marx G, Bernhagen J, Stoppe C. Soluble CD74 Reroutes MIF/CXCR4/AKT-Mediated Survival of Cardiac Myofibroblasts to Necroptosis. J Am Heart Assoc 2018; 7:e009384. [PMID: 30371153 PMCID: PMC6201423 DOI: 10.1161/jaha.118.009384] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 07/09/2018] [Indexed: 01/03/2023]
Abstract
Background Although macrophage migration inhibitory factor ( MIF ) has been demonstrated to mediate cardioprotection in ischemia/reperfusion injury and antagonize fibrotic effects through its receptor, CD 74, the function of the soluble CD 74 receptor ectodomain ( sCD 74) and its interaction with circulating MIF have not been explored in cardiac disease. Methods and Results Cardiac fibroblasts were isolated from hearts of neonatal mice and differentiated into myofibroblasts. Co-treatment with recombinant MIF and sCD 74 induced cell death ( P<0.001), which was mediated by receptor-interacting serine/threonine-protein kinase ( RIP) 1/ RIP 3-dependent necroptosis ( P=0.0376). This effect was specific for cardiac fibroblasts and did not affect cardiomyocytes. Gene expression analyses using microarray and RT - qPCR technology revealed a 4-fold upregulation of several interferon-induced genes upon co-treatment of myofibroblasts with sCD 74 and MIF (Ifi44: P=0.011; Irg1: P=0.022; Clec4e: P=0.011). Furthermore, Western blot analysis confirmed the role of sCD 74 as a modulator of MIF signaling by diminishing MIF -mediated protein kinase B ( AKT) activation ( P=0.0197) and triggering p38 activation ( P=0.0641). We obtained evidence that sCD 74 inhibits MIF -mediated survival pathway through the C-X-C chemokine receptor 4/ AKT axis, enabling the induction of CD 74-dependent necroptotic processes in cardiac myofibroblasts. Preliminary clinical data revealed a lowered sCD 74/ MIF ratio in heart failure patients (17.47±10.09 versus 1.413±0.6244). Conclusions These findings suggest that treatment of cardiac myofibroblasts with sCD 74 and MIF induces necroptosis, offering new insights into the mechanism of myofibroblast depletion during scar maturation. Preliminary clinical data provided first evidence about a clinical relevance of the sCD 74/ MIF axis in heart failure, suggesting that these proteins may be a promising target to modulate cardiac remodeling and disease progression in heart failure.
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Affiliation(s)
- Josefin Soppert
- Department of Intensive Care MedicineUniversity HospitalRWTH AachenAachenGermany
- Department of Thoracic, Cardiac and Vascular SurgeryUniversity HospitalRWTH AachenAachenGermany
| | - Sandra Kraemer
- Department of Thoracic, Cardiac and Vascular SurgeryUniversity HospitalRWTH AachenAachenGermany
| | - Christian Beckers
- Department of Thoracic, Cardiac and Vascular SurgeryUniversity HospitalRWTH AachenAachenGermany
| | - Luisa Averdunk
- Department of Intensive Care MedicineUniversity HospitalRWTH AachenAachenGermany
| | - Julia Möllmann
- Department of Cardiology, Pneumology, Angiology and Internal Intensive CareUniversity HospitalRWTH AachenAachenGermany
| | - Bernd Denecke
- Interdisciplinary Center for Clinical Research (IZKF)University HospitalRWTH AachenAachenGermany
| | - Andreas Goetzenich
- Department of Thoracic, Cardiac and Vascular SurgeryUniversity HospitalRWTH AachenAachenGermany
| | - Gernot Marx
- Department of Intensive Care MedicineUniversity HospitalRWTH AachenAachenGermany
| | - Jürgen Bernhagen
- Department of Vascular BiologyInstitute for Stroke and Dementia Research (ISD)Ludwig‐Maximilians‐University (LMU) MunichMunichGermany
- German Center for Cardiovascular Research (DZHK)partner site Munich Heart AllianceMunichGermany
- Munich Cluster for Systems Neurology (EXC 1010 SyNergy)MunichGermany
| | - Christian Stoppe
- Department of Intensive Care MedicineUniversity HospitalRWTH AachenAachenGermany
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16
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Chen K, Xu Z, Liu Y, Wang Z, Li Y, Xu X, Chen C, Xia T, Liao Q, Yao Y, Zeng C, He D, Yang Y, Tan T, Yi J, Zhou J, Zhu H, Ma J, Zeng C. Irisin protects mitochondria function during pulmonary ischemia/reperfusion injury. Sci Transl Med 2018; 9:9/418/eaao6298. [PMID: 29187642 DOI: 10.1126/scitranslmed.aao6298] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2016] [Revised: 08/10/2017] [Accepted: 10/20/2017] [Indexed: 12/13/2022]
Abstract
Limb remote ischemic preconditioning (RIPC) is an effective means of protection against ischemia/reperfusion (IR)-induced injury to multiple organs. Many studies are focused on identifying endocrine mechanisms that underlie the cross-talk between muscle and RIPC-mediated organ protection. We report that RIPC releases irisin, a myokine derived from the extracellular portion of fibronectin domain-containing 5 protein (FNDC5) in skeletal muscle, to protect against injury to the lung. Human patients with neonatal respiratory distress syndrome show reduced concentrations of irisin in the serum and increased irisin concentrations in the bronchoalveolar lavage fluid, suggesting transfer of irisin from circulation to the lung under physiologic stress. In mice, application of brief periods of ischemia preconditioning stimulates release of irisin into circulation and transfer of irisin to the lung subjected to IR injury. Irisin, via lipid raft-mediated endocytosis, enters alveolar cells and targets mitochondria. Interaction between irisin and mitochondrial uncoupling protein 2 (UCP2) allows for prevention of IR-induced oxidative stress and preservation of mitochondrial function. Animal model studies show that intravenous administration of exogenous irisin protects against IR-induced injury to the lung via improvement of mitochondrial function, whereas in UCP2-deficient mice or in the presence of a UCP2 inhibitor, the protective effect of irisin is compromised. These results demonstrate that irisin is a myokine that facilitates RIPC-mediated lung protection. Targeting the action of irisin in mitochondria presents a potential therapeutic intervention for pulmonary IR injury.
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Affiliation(s)
- Ken Chen
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China.,Department of Cardiology, Chengdu Military General Hospital, Chengdu, Sichuan 610083, P.R. China
| | - Zaicheng Xu
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China
| | - Yukai Liu
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China
| | - Zhen Wang
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China
| | - Yu Li
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China
| | - Xuefei Xu
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China
| | - Caiyu Chen
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China
| | - Tianyang Xia
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China
| | - Qiao Liao
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China
| | - Yonggang Yao
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China
| | - Cindy Zeng
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China
| | - Duofen He
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China.,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China
| | - Yongjian Yang
- Department of Cardiology, Chengdu Military General Hospital, Chengdu, Sichuan 610083, P.R. China
| | - Tao Tan
- Department of Surgery, Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA
| | - Jianxun Yi
- Department of Physiology, Kansas City University, Kansas City, MO 64106, USA
| | - Jingsong Zhou
- Department of Physiology, Kansas City University, Kansas City, MO 64106, USA
| | - Hua Zhu
- Department of Surgery, Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA
| | - Jianjie Ma
- Department of Surgery, Davis Heart and Lung Research Institute, The Ohio State University, Columbus, OH 43210, USA.
| | - Chunyu Zeng
- Department of Cardiology, Daping Hospital, The Third Military Medical University, Chongqing 400042, P.R. China. .,Chongqing Institute of Cardiology, Chongqing 400042, P.R. China
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17
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Systematic RNA-interference in primary human monocyte-derived macrophages: A high-throughput platform to study foam cell formation. Sci Rep 2018; 8:10516. [PMID: 30002403 PMCID: PMC6043567 DOI: 10.1038/s41598-018-28790-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 06/29/2018] [Indexed: 12/21/2022] Open
Abstract
Macrophage-derived foam cells are key regulators of atherogenesis. They accumulate in atherosclerotic plaques and support inflammatory processes by producing cytokines and chemokines. Identifying factors that regulate macrophage lipid uptake may reveal therapeutic targets for coronary artery disease (CAD). Here, we establish a high-throughput screening workflow to systematically identify genes that impact the uptake of DiI-labeled low-density lipoprotein (LDL) into monocyte-derived primary human macrophages. For this, monocytes isolated from peripheral blood were seeded onto 384-well plates, solid-phase transfected with siRNAs, differentiated in vitro into macrophages, and LDL-uptake per cell was measured by automated microscopy and quantitative image analysis. We applied this workflow to study how silencing of 89 genes impacts LDL-uptake into cells from 16 patients with CAD and 16 age-matched controls. Silencing of four novel genes (APOC1, CMTM6, FABP4, WBP5) reduced macrophage LDL-uptake. Additionally, knockdown of the chemokine receptor CXCR4 reduced LDL-uptake, most likely through a G-protein coupled mechanism that involves the CXCR4 ligand macrophage-induced factor (MIF), but is independent of CXCL12. We introduce a high-throughput strategy to systematically study gene function directly in primary CAD-patient cells. Our results propose a function for the MIF/CXCR4 signaling pathway, as well as several novel candidate genes impacting lipid uptake into human macrophages.
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18
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Somanna NK, Mani I, Tripathi S, Pandey KN. Clathrin-dependent internalization, signaling, and metabolic processing of guanylyl cyclase/natriuretic peptide receptor-A. Mol Cell Biochem 2017; 441:135-150. [PMID: 28900772 DOI: 10.1007/s11010-017-3180-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 09/01/2017] [Indexed: 12/24/2022]
Abstract
Cardiac hormones, atrial and brain natriuretic peptides (ANP and BNP), have pivotal roles in renal hemodynamics, neuroendocrine signaling, blood pressure regulation, and cardiovascular homeostasis. Binding of ANP and BNP to the guanylyl cyclase/natriuretic peptide receptor-A (GC-A/NPRA) induces rapid internalization and trafficking of the receptor via endolysosomal compartments, with concurrent generation of cGMP. However, the mechanisms of the endocytotic processes of NPRA are not well understood. The present study, using 125I-ANP binding assay and confocal microscopy, examined the function of dynamin in the internalization of NPRA in stably transfected human embryonic kidney-293 (HEK-293) cells. Treatment of recombinant HEK-293 cells with ANP time-dependently accelerated the internalization of receptor from the cell surface to the cell interior. However, the internalization of ligand-receptor complexes of NPRA was drastically decreased by the specific inhibitors of clathrin- and dynamin-dependent receptor internalization, almost 85% by monodansylcadaverine, 80% by chlorpromazine, and 90% by mutant dynamin, which are specific blockers of endocytic vesicle formation. Visualizing the internalization of NPRA and enhanced GFP-tagged NPRA in HEK-293 cells by confocal microscopy demonstrated the formation of endocytic vesicles after 5 min of ANP treatment; this effect was blocked by the inhibitors of clathrin and by mutant dynamin construct. Our results suggest that NPRA undergoes internalization via clathrin-mediated endocytosis as part of its normal itinerary, including trafficking, signaling, and metabolic degradation.
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Affiliation(s)
- Naveen K Somanna
- Department of Physiology, SL-39, Tulane University Health Sciences Center and School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Indra Mani
- Department of Physiology, SL-39, Tulane University Health Sciences Center and School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Satyabha Tripathi
- Department of Physiology, SL-39, Tulane University Health Sciences Center and School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA
| | - Kailash N Pandey
- Department of Physiology, SL-39, Tulane University Health Sciences Center and School of Medicine, 1430 Tulane Avenue, New Orleans, LA, 70112, USA.
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19
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Tan J, Tedrow JR, Nouraie M, Dutta JA, Miller DT, Li X, Yu S, Chu Y, Juan-Guardela B, Kaminski N, Ramani K, Biswas PS, Zhang Y, Kass DJ. Loss of Twist1 in the Mesenchymal Compartment Promotes Increased Fibrosis in Experimental Lung Injury by Enhanced Expression of CXCL12. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2017; 198:2269-2285. [PMID: 28179498 PMCID: PMC5337810 DOI: 10.4049/jimmunol.1600610] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 01/12/2017] [Indexed: 01/24/2023]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a disease characterized by the accumulation of apoptosis-resistant fibroblasts in the lung. We have previously shown that high expression of the transcription factor Twist1 may explain this prosurvival phenotype in vitro. However, this observation has never been tested in vivo. We found that loss of Twist1 in COL1A2+ cells led to increased fibrosis characterized by very significant accumulation of T cells and bone marrow-derived matrix-producing cells. We found that Twist1-null cells expressed high levels of the T cell chemoattractant CXCL12. In vitro, we found that the loss of Twist1 in IPF lung fibroblasts increased expression of CXCL12 downstream of increased expression of the noncanonical NF-κB transcription factor RelB. Finally, blockade of CXCL12 with AMD3100 attenuated the exaggerated fibrosis observed in Twist1-null mice. Transcriptomic analysis of 134 IPF patients revealed that low expression of Twist1 was characterized by enrichment of T cell pathways. In conclusion, loss of Twist1 in collagen-producing cells led to increased bleomycin-induced pulmonary fibrosis, which is mediated by increased expression of CXCL12. Twist1 expression is associated with dysregulation of T cells in IPF patients. Twist1 may shape the IPF phenotype and regulate inflammation in fibrotic lung injury.
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Affiliation(s)
- Jiangning Tan
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - John R Tedrow
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Mehdi Nouraie
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Justin A Dutta
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - David T Miller
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Xiaoyun Li
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Shibing Yu
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Yanxia Chu
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Brenda Juan-Guardela
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University, New Haven, CT 06520; and
| | - Naftali Kaminski
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University, New Haven, CT 06520; and
| | - Kritika Ramani
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261
| | - Partha S Biswas
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261
| | - Yingze Zhang
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Daniel J Kass
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213;
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20
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Invariant Chain Complexes and Clusters as Platforms for MIF Signaling. Cells 2017; 6:cells6010006. [PMID: 28208600 PMCID: PMC5371871 DOI: 10.3390/cells6010006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/05/2017] [Accepted: 02/07/2017] [Indexed: 12/24/2022] Open
Abstract
Invariant chain (Ii/CD74) has been identified as a surface receptor for migration inhibitory factor (MIF). Most cells that express Ii also synthesize major histocompatibility complex class II (MHC II) molecules, which depend on Ii as a chaperone and a targeting factor. The assembly of nonameric complexes consisting of one Ii trimer and three MHC II molecules (each of which is a heterodimer) has been regarded as a prerequisite for efficient delivery to the cell surface. Due to rapid endocytosis, however, only low levels of Ii-MHC II complexes are displayed on the cell surface of professional antigen presenting cells and very little free Ii trimers. The association of Ii and MHC II has been reported to block the interaction with MIF, thus questioning the role of surface Ii as a receptor for MIF on MHC II-expressing cells. Recent work offers a potential solution to this conundrum: Many Ii-complexes at the cell surface appear to be under-saturated with MHC II, leaving unoccupied Ii subunits as potential binding sites for MIF. Some of this work also sheds light on novel aspects of signal transduction by Ii-bound MIF in B-lymphocytes: membrane raft association of Ii-MHC II complexes enables MIF to target Ii-MHC II to antigen-clustered B-cell-receptors (BCR) and to foster BCR-driven signaling and intracellular trafficking.
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Coban N, Gulec C, Ozsait-Selcuk B, Erginel-Unaltuna N. CYP19A1,MIFandABCA1genes are targets of the RORα in monocyte and endothelial cells. Cell Biol Int 2017; 41:163-176. [DOI: 10.1002/cbin.10712] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 11/29/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Neslihan Coban
- Department of Genetics, Institute for Experimental Medicine; Istanbul University; Vakif Gureba Cad. 34080 Sehremini Istanbul Turkey
| | - Cagri Gulec
- Department of Genetics, Institute for Experimental Medicine; Istanbul University; Vakif Gureba Cad. 34080 Sehremini Istanbul Turkey
| | - Bilge Ozsait-Selcuk
- Department of Genetics, Institute for Experimental Medicine; Istanbul University; Vakif Gureba Cad. 34080 Sehremini Istanbul Turkey
| | - Nihan Erginel-Unaltuna
- Department of Genetics, Institute for Experimental Medicine; Istanbul University; Vakif Gureba Cad. 34080 Sehremini Istanbul Turkey
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Guo D, Guo J, Yao J, Jiang K, Hu J, Wang B, Liu H, Lin L, Sun W, Jiang X. D-dopachrome tautomerase is over-expressed in pancreatic ductal adenocarcinoma and acts cooperatively with macrophage migration inhibitory factor to promote cancer growth. Int J Cancer 2016; 139:2056-67. [PMID: 27434219 DOI: 10.1002/ijc.30278] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 05/25/2016] [Accepted: 07/12/2016] [Indexed: 12/18/2022]
Abstract
Previous studies have established the important role of MIF in the development of pancreatic ductal adenocarcinoma (PDAC) for both therapeutic and diagnostic perspectives, but little is known about the expression and function of D-dopachrome tautomerase (DDT), a functional homolog of MIF, in PDAC. In the present study, we demonstrated that DDT was over-expressed in PDAC tissues in a pattern correlated with MIF. In the pancreatic cancer cell lines, PANC-1, BXPC-3 and ASPC-1, both DDT and MIF were expressed and co-localized with each other in the endosomal compartments and plasma membrane. Knockdown of DDT and MIF in PANC-1 cells cooperatively inhibited ERK1/2 and AKT phosphorylation, increased p53 expression, and reduced cell proliferation, invasion and tumor formation. These effects were rescued by the re-expression of MIF or DDT, but not by the forced expression of the tautomerase-deficient mutants of DDT and MIF, P1G-DDT and P1G-MIF. Finally, we observed that 4-iodo-6-phenylpyrimidine (4-IPP), a covalent tautomerase inhibitor of both DDT and MIF, attenuated PANC-1 cell proliferation and colony formation in vitro and tumor growth in vivo. Thus, targeting the tautomerase sites of both MIF and DDT may offer more efficient therapeutic benefits to PDAC patients.
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Affiliation(s)
- Dawei Guo
- Department of Surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Jinshuai Guo
- Department of Surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Junchao Yao
- Department of Surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Kun Jiang
- Department of Surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Jianhua Hu
- Department of Surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Bo Wang
- Department of Surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Haiyang Liu
- Department of Surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Lin Lin
- Department of Surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Wenyu Sun
- Department of Surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
| | - Xiaofeng Jiang
- Department of Surgery, The Fourth Affiliated Hospital, China Medical University, Shenyang, China
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Rajasekaran D, Gröning S, Schmitz C, Zierow S, Drucker N, Bakou M, Kohl K, Mertens A, Lue H, Weber C, Xiao A, Luker G, Kapurniotu A, Lolis E, Bernhagen J. Macrophage Migration Inhibitory Factor-CXCR4 Receptor Interactions: EVIDENCE FOR PARTIAL ALLOSTERIC AGONISM IN COMPARISON WITH CXCL12 CHEMOKINE. J Biol Chem 2016; 291:15881-95. [PMID: 27226569 PMCID: PMC4957068 DOI: 10.1074/jbc.m116.717751] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 05/19/2016] [Indexed: 12/28/2022] Open
Abstract
An emerging number of non-chemokine mediators are found to bind to classical chemokine receptors and to elicit critical biological responses. Macrophage migration inhibitory factor (MIF) is an inflammatory cytokine that exhibits chemokine-like activities through non-cognate interactions with the chemokine receptors CXCR2 and CXCR4, in addition to activating the type II receptor CD74. Activation of the MIF-CXCR2 and -CXCR4 axes promotes leukocyte recruitment, mediating the exacerbating role of MIF in atherosclerosis and contributing to the wealth of other MIF biological activities. Although the structural basis of the MIF-CXCR2 interaction has been well studied and was found to engage a pseudo-ELR and an N-like loop motif, nothing is known about the regions of CXCR4 and MIF that are involved in binding to each other. Using a genetic strain of Saccharomyces cerevisiae that expresses a functional CXCR4 receptor, site-specific mutagenesis, hybrid CXCR3/CXCR4 receptors, pharmacological reagents, peptide array analysis, chemotaxis, fluorescence spectroscopy, and circular dichroism, we provide novel molecular information about the structural elements that govern the interaction between MIF and CXCR4. The data identify similarities with classical chemokine-receptor interactions but also provide evidence for a partial allosteric agonist compared with CXCL12 that is possible due to the two binding sites of CXCR4.
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Affiliation(s)
- Deepa Rajasekaran
- From the Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520
| | - Sabine Gröning
- the Institute of Biochemistry and Molecular Cell Biology, Rheinisch-Westfälische Technische Hochschule (RWTH), Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Corinna Schmitz
- the Institute of Biochemistry and Molecular Cell Biology, Rheinisch-Westfälische Technische Hochschule (RWTH), Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany, Vascular Biology, Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-University of Munich, Feodor-Lynen-Strasse 17, and
| | - Swen Zierow
- From the Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520
| | - Natalie Drucker
- From the Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520
| | - Maria Bakou
- the Division of Peptide Biochemistry, Technische Universität München, 85354 Freising-Weihenstephan, Germany
| | - Kristian Kohl
- the Division of Peptide Biochemistry, Technische Universität München, 85354 Freising-Weihenstephan, Germany
| | - André Mertens
- the Institute of Biochemistry and Molecular Cell Biology, Rheinisch-Westfälische Technische Hochschule (RWTH), Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Hongqi Lue
- the Institute of Biochemistry and Molecular Cell Biology, Rheinisch-Westfälische Technische Hochschule (RWTH), Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
| | - Christian Weber
- the Institute for Cardiovascular Prevention, Klinikum der Universität München, Ludwig-Maximilians-University of Munich, Pettenkofer Strasse 8, 80336 Munich, Germany
| | - Annie Xiao
- the Center for Molecular Imaging, Departments of Radiology, Biomedical Engineering, and Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan 48109
| | - Gary Luker
- the Center for Molecular Imaging, Departments of Radiology, Biomedical Engineering, and Microbiology and Immunology, University of Michigan, Ann Arbor, Michigan 48109
| | - Aphrodite Kapurniotu
- the Division of Peptide Biochemistry, Technische Universität München, 85354 Freising-Weihenstephan, Germany,
| | - Elias Lolis
- From the Department of Pharmacology, Yale University School of Medicine, New Haven, Connecticut 06520,
| | - Jürgen Bernhagen
- the Institute of Biochemistry and Molecular Cell Biology, Rheinisch-Westfälische Technische Hochschule (RWTH), Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany, Vascular Biology, Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-University of Munich, Feodor-Lynen-Strasse 17, and the Munich Cluster for Systems Neurology (SyNergy), 81377 Munich, Germany
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24
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Pasqualon T, Lue H, Groening S, Pruessmeyer J, Jahr H, Denecke B, Bernhagen J, Ludwig A. Cell surface syndecan-1 contributes to binding and function of macrophage migration inhibitory factor (MIF) on epithelial tumor cells. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:717-26. [DOI: 10.1016/j.bbamcr.2016.02.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2015] [Revised: 02/01/2016] [Accepted: 02/03/2016] [Indexed: 12/21/2022]
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25
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Fallica J, Varela L, Johnston L, Kim B, Serebreni L, Wang L, Damarla M, Kolb TM, Hassoun PM, Damico R. Macrophage Migration Inhibitory Factor: A Novel Inhibitor of Apoptosis Signal-Regulating Kinase 1-p38-Xanthine Oxidoreductase-Dependent Cigarette Smoke-Induced Apoptosis. Am J Respir Cell Mol Biol 2016; 54:504-14. [PMID: 26390063 PMCID: PMC4821049 DOI: 10.1165/rcmb.2014-0403oc] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 09/08/2015] [Indexed: 12/29/2022] Open
Abstract
Cigarette smoke (CS) exposure is the leading cause of emphysema. CS mediates pathologic emphysematous remodeling of the lung via apoptosis of lung parenchymal cells resulting in enlargement of the airspaces, loss of the capillary bed, and diminished surface area for gas exchange. Macrophage migration inhibitory factor (MIF), a pleiotropic cytokine, is reduced both in a preclinical model of CS-induced emphysema and in patients with chronic obstructive pulmonary disease, particularly those with the most severe disease and emphysematous phenotype. MIF functions to antagonize CS-induced DNA damage, p53-dependent apoptosis of pulmonary endothelial cells (EndoCs) and resultant emphysematous tissue remodeling. Using primary alveolar EndoCs and a mouse model of CS-induced lung damage, we investigated the capacity and molecular mechanism(s) by which MIF modifies oxidant injury. Here, we demonstrate that both the activity of xanthine oxidoreductase (XOR), a superoxide-generating enzyme obligatory for CS-induced DNA damage and EndoC apoptosis, and superoxide concentrations are increased after CS exposure in the absence of MIF. Both XOR hyperactivation and apoptosis in the absence of MIF occurred via a p38 mitogen-activated protein kinase-dependent mechanism. Furthermore, a mitogen-activated protein kinase kinase kinase family member, apoptosis signal-regulating kinase 1 (ASK1), was necessary for CS-induced p38 activation and EndoC apoptosis. MIF was sufficient to directly suppress ASK1 enzymatic activity. Taken together, MIF suppresses CS-mediated cytotoxicity in the lung, in part by antagonizing ASK1-p38-XOR-dependent apoptosis.
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Affiliation(s)
- Jonathan Fallica
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland; and
- Environmental Health Sciences, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland
| | - Lidenys Varela
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland; and
| | - Laura Johnston
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland; and
| | - Bo Kim
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland; and
| | - Leonid Serebreni
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland; and
| | - Lan Wang
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland; and
| | - Mahendra Damarla
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland; and
| | - Todd M. Kolb
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland; and
| | - Paul M. Hassoun
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland; and
| | - Rachel Damico
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, Baltimore, Maryland; and
- Environmental Health Sciences, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland
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26
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Beletkaia E, Fenz SF, Pomp W, Snaar-Jagalska BE, Hogendoorn PW, Schmidt T. CXCR4 signaling is controlled by immobilization at the plasma membrane. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:607-16. [DOI: 10.1016/j.bbamcr.2015.12.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 12/23/2015] [Accepted: 12/29/2015] [Indexed: 12/14/2022]
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27
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Schröder B. The multifaceted roles of the invariant chain CD74--More than just a chaperone. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:1269-81. [PMID: 27033518 DOI: 10.1016/j.bbamcr.2016.03.026] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 03/22/2016] [Accepted: 03/23/2016] [Indexed: 01/13/2023]
Abstract
The invariant chain (CD74) is well known for its essential role in antigen presentation by mediating assembly and subcellular trafficking of the MHCII complex. Beyond this, CD74 has also been implicated in a number of processes independent of MHCII. These include the regulation of endosomal trafficking, cell migration and cellular signalling as surface receptor of the pro-inflammatory cytokine macrophage migration inhibitory factor (MIF). In several forms of cancer, CD74 is up-regulated and associated with enhanced proliferation and metastatic potential. In this review, an overview of the diverse biological functions of the CD74 protein is provided with a particular focus on how these may be regulated. In particular, proteolysis of CD74 will be discussed as a central mechanism to control the actions of this important protein at different levels.
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Affiliation(s)
- Bernd Schröder
- Biochemical Institute, Christian Albrechts University of Kiel, Otto-Hahn-Platz 9, D-24118 Kiel, Germany.
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28
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Costa AF, Gomes SZ, Lorenzon-Ojea AR, Martucci M, Faria MR, Pinto DDS, Oliveira SF, Ietta F, Paulesu L, Bevilacqua E. Macrophage migration inhibitory factor induces phosphorylation of Mdm2 mediated by phosphatidylinositol 3-kinase/Akt kinase: Role of this pathway in decidual cell survival. Placenta 2016; 41:27-38. [PMID: 27208405 DOI: 10.1016/j.placenta.2016.03.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 02/25/2016] [Accepted: 03/01/2016] [Indexed: 01/10/2023]
Abstract
The phosphatidylinositol 3-kinase (PI3K)/Akt pathway has an anti-apoptotic effect through several downstream targets, which includes activation of the transformed mouse 3T3 cell double-minute 2 (Mdm2) protein, its translocation to the nucleus and degradation of the tumor suppressor p53. We show that Mif, the Macrophage Migration Inhibitory Factor, an important cytokine at the maternal fetal interface in several species, triggers phosphorylation of Mdm2 protein in a PI3K/Akt-dependent manner, thereby preventing apoptosis in cultured mouse decidual cells. Inhibition of Akt and PI3K suppresses the pathway. Mif treatment also changes the nuclear translocation of p53 and interferes with the apoptotic fate of these cells when challenged with reactive oxygen species. In conclusion, an important mechanism has been found underlying decidual cell survival through Akt signaling pathway activated by Mif, suggesting a role for this cytokine in decidual homeostasis and in the integrity of the maternal-fetal barrier that is essential for successful gestation.
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Affiliation(s)
- Adriana Fraga Costa
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil; Department of Stomatology, Dental School, University of São Paulo, São Paulo, Brazil
| | - Sara Zago Gomes
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Aline R Lorenzon-Ojea
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Mariane Martucci
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Miriam Rubio Faria
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | - Sergio F Oliveira
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Francesca Ietta
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Luana Paulesu
- Department of Life Sciences, University of Siena, Siena, Italy
| | - Estela Bevilacqua
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
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Chesney JA, Mitchell RA. 25 Years On: A Retrospective on Migration Inhibitory Factor in Tumor Angiogenesis. Mol Med 2015; 21 Suppl 1:S19-24. [PMID: 26605643 DOI: 10.2119/molmed.2015.00055] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 03/16/2015] [Indexed: 01/26/2023] Open
Abstract
Twenty-five years ago marked the publication of the first report describing a functional contribution by the cytokine, macrophage migration inhibitory factor (MIF), to tumor-associated angiogenesis and growth. Since first appearing, this report has been cited 304 times (as of this writing), underscoring not only the importance of this landmark study but also the importance of MIF in tumor neovascularization. Perhaps more importantly, this first link between MIF and stromal cell-dependent tumor angiogenesis presaged the subsequent identification of MIF in mediating protumorigenic contributions to several solid tumor stromal cell types, including monocytes, macrophages, T lymphocytes, NK cells, fibroblasts, endothelial progenitors and mesenchymal stem cells. This retrospective review will broadly evaluate both past and present literature stemming from this initial publication, with an emphasis on cellular sources, cellular effectors, signal transduction mechanisms and the clinical importance of MIF-dependent tumor vascularization.
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Affiliation(s)
- Jason A Chesney
- Molecular Targets Program, JG Brown Cancer Center, and the Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
| | - Robert A Mitchell
- Molecular Targets Program, JG Brown Cancer Center, and the Department of Medicine, University of Louisville, Louisville, Kentucky, United States of America
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Pawig L, Klasen C, Weber C, Bernhagen J, Noels H. Diversity and Inter-Connections in the CXCR4 Chemokine Receptor/Ligand Family: Molecular Perspectives. Front Immunol 2015; 6:429. [PMID: 26347749 PMCID: PMC4543903 DOI: 10.3389/fimmu.2015.00429] [Citation(s) in RCA: 132] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 08/07/2015] [Indexed: 12/19/2022] Open
Abstract
CXCR4 and its ligand CXCL12 mediate the homing of progenitor cells in the bone marrow and their recruitment to sites of injury, as well as affect processes such as cell arrest, survival, and angiogenesis. CXCL12 was long thought to be the sole CXCR4 ligand, but more recently the atypical chemokine macrophage migration inhibitory factor (MIF) was identified as an alternative, non-cognate ligand for CXCR4 and shown to mediate chemotaxis and arrest of CXCR4-expressing T-cells. This has complicated the understanding of CXCR4-mediated signaling and associated biological processes. Compared to CXCL12/CXCR4-induced signaling, only few details are known on MIF/CXCR4-mediated signaling and it remains unclear to which extent MIF and CXCL12 reciprocally influence CXCR4 binding and signaling. Furthermore, the atypical chemokine receptor 3 (ACKR3) (previously CXCR7) has added to the complexity of CXCR4 signaling due to its ability to bind CXCL12 and MIF, and to evoke CXCL12- and MIF-triggered signaling independently of CXCR4. Also, extracellular ubiquitin (eUb) and the viral protein gp120 (HIV) have been reported as CXCR4 ligands, whereas viral chemokine vMIP-II (Herpesvirus) and human β3-defensin (HBD-3) have been identified as CXCR4 antagonists. This review will provide insight into the diversity and inter-connections in the CXCR4 receptor/ligand family. We will discuss signaling pathways initiated by binding of CXCL12 vs. MIF to CXCR4, elaborate on how ACKR3 affects CXCR4 signaling, and summarize biological functions of CXCR4 signaling mediated by CXCL12 or MIF. Also, we will discuss eUb and gp120 as alternative ligands for CXCR4, and describe vMIP-II and HBD-3 as antagonists for CXCR4. Detailed insight into biological effects of CXCR4 signaling und underlying mechanisms, including diversity of CXCR4 ligands and inter-connections with other (chemokine) receptors, is clinically important, as the CXCR4 antagonist AMD3100 has been approved as stem cell mobilizer in specific disease settings.
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Affiliation(s)
- Lukas Pawig
- Institute of Molecular Cardiovascular Research (IMCAR), RWTH Aachen University , Aachen , Germany
| | - Christina Klasen
- Institute of Biochemistry and Molecular Cell Biology, RWTH Aachen University , Aachen , Germany
| | - Christian Weber
- Institute for Cardiovascular Prevention (IPEK), Ludwig-Maximilians-University Munich , Munich , Germany ; DZHK (German Centre for Cardiovascular Research), Partner Site Munich Heart Alliance , Munich , Germany ; Cardiovascular Research Institute Maastricht (CARIM), Maastricht University , Maastricht , Netherlands
| | - Jürgen Bernhagen
- Institute of Biochemistry and Molecular Cell Biology, RWTH Aachen University , Aachen , Germany ; August-Lenz-Stiftung, Institute for Cardiovascular Research, Ludwig-Maximilians-University Munich , Munich , Germany
| | - Heidi Noels
- Institute of Molecular Cardiovascular Research (IMCAR), RWTH Aachen University , Aachen , Germany
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31
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An improved method to demonstrate macrophages in teleosts. Tissue Cell 2015; 47:254-6. [DOI: 10.1016/j.tice.2015.02.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 02/04/2015] [Indexed: 11/19/2022]
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Nagata Y, Yoshihisa Y, Matsunaga K, Rehman MU, Kitaichi N, Shimizu T. Role of macrophage migration inhibitory factor (MIF) in pollen-induced allergic conjunctivitis and pollen dermatitis in mice. PLoS One 2015; 10:e0115593. [PMID: 25647395 PMCID: PMC4315585 DOI: 10.1371/journal.pone.0115593] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Accepted: 11/28/2014] [Indexed: 11/18/2022] Open
Abstract
Pollen is a clinically important airborne allergen and one of the major causes of allergic conjunctivitis. A subpopulation of patients with atopic dermatitis (AD) are also known to have exacerbated skin eruptions on the face, especially around the eyelids, after contact with pollen. This pollen-induced skin reaction is now known as pollen dermatitis. Macrophage migration inhibitory factor (MIF) is a pluripotent cytokine that plays an essential role in allergic inflammation. Recent findings suggest that MIF is involved in several allergic disorders, including AD. In this study, MIF knockout (KO), MIF transgenic (Tg) and WT littermate mice were immunized with ragweed (RW) pollen or Japanese cedar (JC) pollen and challenged via eye drops. We observed that the numbers of conjunctiva- and eyelid-infiltrating eosinophils were significantly increased in RW and JC pollen-sensitized MIF Tg compared with WT mice or MIF KO mice. The mRNA expression levels of eotaxin, interleukin (IL)-5 and IL-13 were increased in pollen-sensitized eyelid skin sites of MIF Tg mice. An in vitro analysis revealed that high eotaxin expression was induced in dermal fibroblasts by MIF combined with stimulation of IL-4 or IL-13. This eotaxin expression was inhibited by the treatment with CD74 siRNA in fibroblasts. These findings indicate that MIF can induce eosinophil accumulation in the conjunctiva and eyelid dermis exposed to pollen. Therefore, targeted inhibition of MIF might result as a new option to control pollen-induced allergic conjunctivitis and pollen dermatitis.
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Affiliation(s)
- Yuka Nagata
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Yoko Yoshihisa
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Kenji Matsunaga
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Mati Ur Rehman
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Nobuyuki Kitaichi
- Department of Ophthalmology, Health Sciences University of Hokkaido, Sapporo, Japan
| | - Tadamichi Shimizu
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
- * E-mail:
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Exogenously delivered heat shock protein 70 displaces its endogenous analogue and sensitizes cancer cells to lymphocytes-mediated cytotoxicity. Oncotarget 2015; 5:3101-14. [PMID: 24797019 PMCID: PMC4102795 DOI: 10.18632/oncotarget.1820] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Hsp70 chaperone is known to stimulate anti-tumour immunity in a variety of cancer models. Here we demonstrated that the addition of purified recombinant Hsp70 to the culture medium facilitated cancer cell cytolysis by lymphocytes. Importantly, exogenous Hsp70 triggered secretion of the intracellular Hsp70 to a cell surface and extracellular milieu, which played a role in cytolysis because down-regulation of the endogenous Hsp70 reduced both its presence at the cell surface and the lymphocyte-mediated cytolysis. Inhibitors that target both the ATPase and the peptide-binding domains of Hsp70 molecule potently decreased its anti-tumor effect. Using a variety of cell transport markers and inhibitors, we showed that the exchange of exogenous and intracellular Hsp70 is supported by classical and non-classical transport pathways, with a particular role of lipid rafts in the chaperone's intracellular transport. In conclusion, exogenous Hsp70 can eject endogenous Hsp70, thus exerting anticancer activity.
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Sauler M, Zhang Y, Min JN, Leng L, Shan P, Roberts S, Jorgensen WL, Bucala R, Lee PJ. Endothelial CD74 mediates macrophage migration inhibitory factor protection in hyperoxic lung injury. FASEB J 2015; 29:1940-9. [PMID: 25609432 DOI: 10.1096/fj.14-260299] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2014] [Accepted: 12/22/2014] [Indexed: 12/25/2022]
Abstract
Exposure to hyperoxia results in acute lung injury. A pathogenic consequence of hyperoxia is endothelial injury. Macrophage migration inhibitory factor (MIF) has a cytoprotective effect on lung endothelial cells; however, the mechanism is uncertain. We postulate that the MIF receptor CD74 mediates this protective effect. Using adult wild-type (WT), MIF-deficient (Mif(-/-)), CD74-deficient (Cd74(-/-)) mice and MIF receptor inhibitor treated mice, we report that MIF deficiency or inhibition of MIF receptor binding results in increased sensitivity to hyperoxia. Mif(-/-) and Cd74(-/-) mice demonstrated decreased median survival following hyperoxia compared to WT mice. Mif(-/-) mice demonstrated an increase in bronchoalveolar protein (48%) and lactate dehydrogenase (LDH) (68%) following 72 hours of hyperoxia. Similarly, treatment with MIF receptor antagonist resulted in a 59% and 91% increase in bronchoalveolar lavage protein and LDH, respectively. Inhibition of CD74 in primary murine lung endothelial cells (MLECs) abrogated the protective effect of MIF, including decreased hyperoxia-mediated AKT phosphorylation and a 20% reduction in the antiapoptotic effect of exogenous MIF. Treatment with MIF decreased hyperoxia-mediated H2AX phosphorylation in a CD74-dependent manner. These data suggest that therapeutic manipulation of the MIF-CD74 axis in lung endothelial cells may be a novel approach to protect against acute oxidative stress.
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Affiliation(s)
- Maor Sauler
- Sections of *Pulmonary, Critical Care & Sleep Medicine and Rheumatology, Yale School of Medicine, and Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - Yi Zhang
- Sections of *Pulmonary, Critical Care & Sleep Medicine and Rheumatology, Yale School of Medicine, and Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - Jin-Na Min
- Sections of *Pulmonary, Critical Care & Sleep Medicine and Rheumatology, Yale School of Medicine, and Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - Lin Leng
- Sections of *Pulmonary, Critical Care & Sleep Medicine and Rheumatology, Yale School of Medicine, and Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - Peiying Shan
- Sections of *Pulmonary, Critical Care & Sleep Medicine and Rheumatology, Yale School of Medicine, and Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - Scott Roberts
- Sections of *Pulmonary, Critical Care & Sleep Medicine and Rheumatology, Yale School of Medicine, and Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - William L Jorgensen
- Sections of *Pulmonary, Critical Care & Sleep Medicine and Rheumatology, Yale School of Medicine, and Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - Richard Bucala
- Sections of *Pulmonary, Critical Care & Sleep Medicine and Rheumatology, Yale School of Medicine, and Department of Chemistry, Yale University, New Haven, Connecticut, USA
| | - Patty J Lee
- Sections of *Pulmonary, Critical Care & Sleep Medicine and Rheumatology, Yale School of Medicine, and Department of Chemistry, Yale University, New Haven, Connecticut, USA
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Barnes MA, Roychowdhury S, Nagy LE. Innate immunity and cell death in alcoholic liver disease: role of cytochrome P4502E1. Redox Biol 2014; 2:929-35. [PMID: 25180169 PMCID: PMC4143810 DOI: 10.1016/j.redox.2014.07.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Revised: 07/24/2014] [Accepted: 07/28/2014] [Indexed: 01/01/2023] Open
Abstract
Ethanol-induced liver injury is a complex process dependent upon the interaction of multiple cell types in the liver, as well as activation of the innate immune response. Increased expression of CYP2E1 in response to high concentrations of ethanol leads to greater production of cytotoxic ethanol metabolites, which in turn contribute to production of reactive oxygen species, oxidative stress, and ultimately, cell death. Necroptotic hepatocyte cell death in response to ethanol is mediated via a CYP2E1-dependent expression of receptor-interacting protein kinase 3 (RIP3), a key component of the necroptosome. In response to alarmins released during ethanol-induced necroptosis, the innate immune response is activated. Macrophage migration inhibitory factor (MIF), a pro-inflammatory multikine involved in many disease processes, is an essential component to this response to injury. MIF expression is increased during ethanol exposure via a CYP2E1-dependent pathway, likely contributing to an exacerbated innate immune response and chronic inflammation after chronic ethanol. This review will discuss the complex interactions between CYP2E1-dependent expression of RIP3 and MIF in the pathophysiology of chronic ethanol-induced liver injury. Alcohol induces hepatocellular death via both apoptosis and necroptosis. Receptor interacting kinase 3 (RIP3) mediates necroptotic cell death. Alcohol-induced injury activates innate immune responses, including MIF. Interactions between innate immunity and cell death with ethanol are reviewed.
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Affiliation(s)
- Mark A Barnes
- Department of Molecular Medicine, Case Western Reserve University, Cleveland, OH, United States ; Center for Liver Disease Research, Department of Pathobiology, Cleveland Clinic, Cleveland, OH, United States
| | - Sanjoy Roychowdhury
- Center for Liver Disease Research, Department of Pathobiology, Cleveland Clinic, Cleveland, OH, United States
| | - Laura E Nagy
- Department of Molecular Medicine, Case Western Reserve University, Cleveland, OH, United States ; Center for Liver Disease Research, Department of Pathobiology, Cleveland Clinic, Cleveland, OH, United States ; Department of Gastroenterology and Hepatology, Cleveland Clinic, Cleveland, OH, United States
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Role of MIF in myocardial ischaemia and infarction: insight from recent clinical and experimental findings. Clin Sci (Lond) 2014; 127:149-61. [PMID: 24697297 DOI: 10.1042/cs20130828] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
First discovered in 1966 as an inflammatory cytokine, MIF (macrophage migration inhibitory factor) has been extensively studied for its pivotal role in a variety of inflammatory diseases, including rheumatoid arthritis and atherosclerosis. Although initial studies over a decade ago reported increases in circulating MIF levels following acute MI (myocardial infarction), the dynamic changes in MIF and its pathophysiological significance following MI have been unknown until recently. In the present review, we summarize recent experimental and clinical studies examining the diverse functions of MIF across the spectrum of acute MI from brief ischaemia to post-infarct healing. Following an acute ischaemic insult, MIF is rapidly released from jeopardized cardiomyocytes, followed by a persistent MIF production and release from activated immune cells, resulting in a sustained increase in circulating levels of MIF. Recent studies have documented two distinct actions of MIF following acute MI. In the supra-acute phase of ischaemia, MIF mediates cardioprotection via several distinct mechanisms, including metabolic activation, apoptosis suppression and antioxidative stress. In prolonged myocardial ischaemia, however, MIF promotes inflammatory responses with largely detrimental effects on cardiac function and remodelling. The pro-inflammatory properties of MIF are complex and involve MIF derived from cardiac and immune cells contributing sequentially to the innate immune response evoked by MI. Emerging evidence on the role of MIF in myocardial ischaemia and infarction highlights a significant potential for the clinical use of MIF agonists or antagonists and as a unique cardiac biomarker.
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Pelekanos RA, Ting MJ, Sardesai VS, Ryan JM, Lim YC, Chan JKY, Fisk NM. Intracellular trafficking and endocytosis of CXCR4 in fetal mesenchymal stem/stromal cells. BMC Cell Biol 2014; 15:15. [PMID: 24885150 PMCID: PMC4065074 DOI: 10.1186/1471-2121-15-15] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Accepted: 05/02/2014] [Indexed: 12/13/2022] Open
Abstract
Background Fetal mesenchymal stem/stromal cells (MSC) represent a developmentally-advantageous cell type with translational potential. To enhance adult MSC migration, studies have focussed on the role of the chemokine receptor CXCR4 and its ligand SDF-1 (CXCL12), but more recent work implicates an intricate system of CXCR4 receptor dimerization, intracellular localization, multiple ligands, splice variants and nuclear accumulation. We investigated the intracellular localization of CXCR4 in fetal bone marrow-derived MSC and role of intracellular trafficking in CXCR4 surface expression and function. Results We found that up to 4% of human fetal MSC have detectable surface-localized CXCR4. In the majority of cells, CXCR4 is located not at the cell surface, as would be required for ‘sensing’ migratory cues, but intracellularly. CXCR4 was identified in early endosomes, recycling endosomes, and lysosomes, indicating only a small percentage of CXCR4 travelling to the plasma membrane. Notably CXCR4 was also found in and around the nucleus, as detected with an anti-CXCR4 antibody directed specifically against CXCR4 isoform 2 differing only in N-terminal sequence. After demonstrating that endocytosis of CXCR4 is largely independent of endogenously-produced SDF-1, we next applied the cytoskeletal inhibitors blebbistatin and dynasore to inhibit endocytotic recycling. These increased the number of cells expressing surface CXCR4 by 10 and 5 fold respectively, and enhanced the number of cells migrating to SDF1 in vitro (up to 2.6 fold). These molecules had a transient effect on cell morphology and adhesion, which abated after the removal of the inhibitors, and did not alter functional stem cell properties. Conclusions We conclude that constitutive endocytosis is implicated in the regulation of CXCR4 membrane expression, and suggest a novel pharmacological strategy to enhance migration of systemically-transplanted cells.
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Affiliation(s)
- Rebecca A Pelekanos
- UQ Centre for Clinical Research, The University of Queensland, Herston QLD 4029, Australia.
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Rassaf T, Weber C, Bernhagen J. Macrophage migration inhibitory factor in myocardial ischaemia/reperfusion injury. Cardiovasc Res 2014; 102:321-8. [PMID: 24675723 DOI: 10.1093/cvr/cvu071] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Acute myocardial infarction (AMI) remains one of the leading causes of death in the developed world. There is emerging evidence that the cytokine macrophage migration inhibitory factor (MIF) is a crucial player in AMI. Cardioprotection by MIF is likely to be a multifactorial phenomenon mediated by receptor-mediated signalling processes, intracellular protein-protein interactions, and enzymatic redox regulation. Co-ordinating several pathways in the ischaemic heart, MIF contributes to receptor-mediated regulation of cardioprotective AMP-activated protein kinase signalling, inhibition of pro-apoptotic cascades, and the reduction of oxidative stress in the post-ischaemic heart. Moreover, the cardioprotective properties of MIF are modulated by S-nitros(yl)ation. These effects in the pathophysiology of myocardial ischaemia/reperfusion injury qualify MIF as a promising therapeutic target in the future. We here summarize the findings of experimental and clinical studies and emphasize the therapeutic potential of MIF in AMI.
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Affiliation(s)
- Tienush Rassaf
- Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, University Hospital Düsseldorf, Moorenstrasse 5, Düsseldorf D-40225, Germany
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Kho DH, Zhang T, Balan V, Wang Y, Ha SW, Xie Y, Raz A. Autocrine motility factor modulates EGF-mediated invasion signaling. Cancer Res 2014; 74:2229-37. [PMID: 24576828 DOI: 10.1158/0008-5472.can-13-2937] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Autocrine motility factor (AMF) enhances invasion by breast cancer cells, but how its secretion and effector signaling are controlled in the tumor microenvironment is not fully understood. In this study, we investigated these issues with a chimeric AMF that is secreted at high levels through a canonical endoplasmic reticulum (ER)/Golgi pathway. Using this tool, we found that AMF enhances tumor cell motility by activating AKT/ERK, altering actin organization, and stimulating β-catenin/TCF and activating protein 1 transcription. EGF enhanced secretion of AMF through its casein kinase II-mediated phosphorylation. RNA interference-mediated attenuation of AMF expression inhibited EGF-induced invasion by suppressing extracellular signal-regulated kinase signaling. Conversely, exogenous AMF overcame the inhibitory effect of EGF receptor inhibitor gefitinib on invasive motility by activating HER2 signaling. Taken together, our findings show how AMF modulates EGF-induced invasion while affecting acquired resistance to cytotoxic drugs in the tumor microenvironment.
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Affiliation(s)
- Dhong Hyo Kho
- Authors' Affiliations: Departments of Oncology and Pathology, Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, Michigan
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Zhang Y, Wang X, Yang H, Liu H, Lu Y, Han L, Liu G. Kinase AKT controls innate immune cell development and function. Immunology 2013; 140:143-52. [PMID: 23692658 DOI: 10.1111/imm.12123] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 05/13/2013] [Accepted: 05/16/2013] [Indexed: 12/17/2022] Open
Abstract
The critical roles of kinase AKT in tumour cell proliferation, apoptosis and protein synthesis have been widely recognized. But AKT also plays an important role in immune modulation. Recent studies have confirmed that kinase AKT can regulate the development and functions of innate immune cells (neutrophil, macrophage and dendritic cell). Studies have shown that different isoforms of kinase AKT have different effects in regulating immunity-related diseases, mainly through the mammalian target of rapamycin-dependent or -independent pathways. The purpose of this review is to illustrate the immune modulating effects of kinase AKT on innate immune cell development, survival and function.
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Affiliation(s)
- Yan Zhang
- Department of Immunology, Shanghai Medical College, Fudan University, Shanghai, China; Shenyang Agriculture University, Shenyang, China
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Strüßmann T, Tillmann S, Wirtz T, Bucala R, von Hundelshausen P, Bernhagen J. Platelets are a previously unrecognised source of MIF. Thromb Haemost 2013; 110:1004-13. [PMID: 23846621 DOI: 10.1160/th13-01-0049] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 06/01/2013] [Indexed: 02/07/2023]
Abstract
Macrophage migration inhibitory factor (MIF) is an inflammatory cytokine with chemokine-like functions and a role in atherogenesis. MIF is secreted by various cells including endothelial cells and macrophages. Platelets are another prominent cell type with a role in atherogenesis and are a rich source of atherogenic chemokines. We asked whether platelets express and secrete MIF. In comparison, CXCL12 release was determined. We examined the subcellular localisation of MIF in platelets/megakaryocytes, studied its co-localisation with other platelet-derived mediators and asked whether platelets contain MIF mRNA. Moreover, we probed the functional role of platelet-derived MIF in inflammatory cell recruitment. Using Western blot and ELISA, we demonstrated and quantitated MIF protein in human and mouse platelets. Applying confocal-microscopy, MIF was found to localise in granular-like structures, but did not co-localise with known platelet cytokines. qPCR indicated that platelets contain low levels of MIF mRNA. ELISA measurements from human platelet supernatants showed that, whereas thrombin and collagen triggered the release of MIF and CXCL12, ADP and oxidised LDL promoted CXCL12 but not MIF secretion. Using Transwell assays, we demonstrated that platelet supernatants promoted monocyte chemotaxis and that this was blocked by neutralising MIF antibodies.This is the first report demonstrating MIF secretion from activated platelets, suggesting that platelets are a previously unrecognised source of MIF in inflammatory processes. There are distinct activating stimuli for MIF and CXCL12 secretion. A substantial portion of the chemotactic capacity of stimulated platelet supernatants is contributed by MIF, suggesting a role for platelet-derived MIF in atherogenic cell recruitment.
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Affiliation(s)
- T Strüßmann
- Prof. Dr. rer. nat. Jürgen Bernhagen, Institute of Biochemistry and Molecular Cell Biology, RWTH Aachen University, Pauwelsstrasse 30, D-52074 Aachen, Germany, Tel.: +49 241 80 88 840/31/41, Fax: +49 241 80 82 427, E-mail: , Web: www.ukaachen.de/sites/lfg/bcmzb
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Hansen B, Dittrich-Breiholz O, Kracht M, Windheim M. Regulation of NF-κB-dependent gene expression by ligand-induced endocytosis of the interleukin-1 receptor. Cell Signal 2013; 25:214-28. [DOI: 10.1016/j.cellsig.2012.09.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 09/20/2012] [Accepted: 09/24/2012] [Indexed: 02/06/2023]
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Rodrigues AA, Clemente TM, dos Santos MA, Machado FC, Gomes RGB, Moreira HHT, Cruz MC, Brígido PC, dos Santos PCF, Martins FA, Bahia D, Maricato JT, Janini LMR, Reboredo EH, Mortara RA, da Silva CV. A recombinant protein based on Trypanosoma cruzi P21 enhances phagocytosis. PLoS One 2012; 7:e51384. [PMID: 23251513 PMCID: PMC3519637 DOI: 10.1371/journal.pone.0051384] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2012] [Accepted: 11/06/2012] [Indexed: 12/12/2022] Open
Abstract
Background P21 is a secreted protein expressed in all developmental stages of Trypanosoma cruzi. The aim of this study was to determine the effect of the recombinant protein based on P21 (P21-His6) on inflammatory macrophages during phagocytosis. Findings Our results showed that P21-His6 acts as a phagocytosis inducer by binding to CXCR4 chemokine receptor and activating actin polymerization in a way dependent onthe PI3-kinase signaling pathway. Conclusions Thus, our results shed light on the notion that native P21 is a component related to T. cruzi evasion from the immune response and that CXCR4 may be involved in phagocytosis. P21-His6 represents an important experimental control tool to study phagocytosis signaling pathways of different intracellular parasites and particles.
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Affiliation(s)
- Adele A. Rodrigues
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Tatiana M. Clemente
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Marlus A. dos Santos
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Fabrício C. Machado
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Rafael G. B. Gomes
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | | | - Mário C. Cruz
- Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina - Universidade Federal de São Paulo, São Paulo, Brazil
| | - Paula C. Brígido
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Paulo C. F. dos Santos
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Flávia A. Martins
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, Brazil
| | - Diana Bahia
- Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina - Universidade Federal de São Paulo, São Paulo, Brazil
| | - Juliana T. Maricato
- Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina - Universidade Federal de São Paulo, São Paulo, Brazil
| | - Luiz M. R. Janini
- Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina - Universidade Federal de São Paulo, São Paulo, Brazil
| | - Eduardo H. Reboredo
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, Brazil
| | - Renato A. Mortara
- Departamento de Microbiologia, Imunologia e Parasitologia, Escola Paulista de Medicina - Universidade Federal de São Paulo, São Paulo, Brazil
| | - Claudio V. da Silva
- Instituto de Ciências Biomédicas, Universidade Federal de Uberlândia, Uberlândia, Brazil
- * E-mail:
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Delayed development of chronic lymphocytic leukemia in the absence of macrophage migration inhibitory factor. Blood 2012; 121:812-21. [PMID: 23118218 DOI: 10.1182/blood-2012-05-431452] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
UNLABELLED Survival of chronic lymphocytic leukemia (CLL) cells depends on stimuli provided by a suitable microenvironment. The factors and mechanisms providing this growth support for CLL cells are not fully understood. We found that plasma levels of macrophage migration inhibitory factor (MIF), a proinflammatory and immunoregulatory chemokine, were elevated in CLL patients. Therefore, we characterized the functional role of MIF in a CLL mouse model. For this purpose, we crossed Eμ-TCL1 mice with MIF knockout (MIF-/-) mice. The resulting TCL1+/wtMIF/ mice showed a delayed onset of leukemia, reduced splenomegaly and hepatomegaly, and a longer survival than TCL1+/wtMIFwt/wt controls. Immunohistochemical examination of the lymphoid organs showed that the numbers of macrophages were significantly reduced in the spleen and bone marrow of TCL1+/wtMIF/ mice compared with TCL1+/wtMIFwt/wt controls. Mechanistic studies in vitro revealed that the absence of MIF rendered CLL cells more susceptible to apoptosis. Accordingly, incubation with an anti-MIF antibody reduced the survival of CLL cells on a macrophage feeder layer. In addition, the migratory activity of TCL1+/wtMIF/ macrophages was decreased compared with TCL1+/wtMIFwt/wt macrophages. Taken together, our results provide evidence that MIF supports the development of CLL by enhancing the interaction of CLL cells with macrophages. KEY POINTS Targeted deletion of the gene for macrophage migration inhibitory factor (MIF) delays development of chronic lymphocytic leukemia and prolongs survival in mice. MIF recruits leukemia-associated macrophages to spleen or liver.
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Sanchez-Niño MD, Sanz AB, Ruiz-Andres O, Poveda J, Izquierdo MC, Selgas R, Egido J, Ortiz A. MIF, CD74 and other partners in kidney disease: tales of a promiscuous couple. Cytokine Growth Factor Rev 2012; 24:23-40. [PMID: 22959722 DOI: 10.1016/j.cytogfr.2012.08.001] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 08/20/2012] [Indexed: 12/27/2022]
Abstract
Macrophage migration inhibitory factor (MIF) is increased in kidney and urine during kidney disease. MIF binds to and activates CD74 and chemokine receptors CXCR2 and CXCR4. CD74 is a protein trafficking regulator and a cell membrane receptor for MIF, D-dopachrome tautomerase (D-DT/MIF-2) and bacterial proteins. MIF signaling through CD74 requires CD44. CD74, CD44 and CXCR4 are upregulated in renal cells in diseased kidneys and MIF activation of CD74 in kidney cells promotes an inflammatory response. MIF or CXCR2 targeting protects from experimental kidney injury, CD44 deficiency modulates kidney injury and CXCR4 activation promotes glomerular injury. However, the contribution of MIF or MIF-2 to these actions of MIF receptors has not been explored. The safety and efficacy of strategies targeting MIF, CD74, CD44 and CXCR4 are under study in humans.
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Stoppe C, Grieb G, Rossaint R, Simons D, Coburn M, Götzenich A, Strüssmann T, Pallua N, Bernhagen J, Rex S. High postoperative blood levels of macrophage migration inhibitory factor are associated with less organ dysfunction in patients after cardiac surgery. Mol Med 2012; 18:843-50. [PMID: 22526918 DOI: 10.2119/molmed.2012.00071] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Accepted: 04/20/2012] [Indexed: 11/06/2022] Open
Abstract
Macrophage migration inhibitory factor (MIF) is an inflammatory cytokine that exerts protective effects during myocardial ischemia/reperfusion injury. We hypothesized that elevated MIF levels in the early postoperative time course might be inversely associated with postoperative organ dysfunction as assessed by the simplified acute physiology score (SAPS) II and sequential organ failure assessment (SOFA) score in patients after cardiac surgery. A total of 52 cardiac surgical patients (mean age [± SD] 67 ± 10 years; EuroScore: 7) were enrolled in this monocenter, prospective observational study. Serum levels of MIF and clinical data were obtained after induction of anesthesia, at admission to the intensive care unit (ICU), 4 h after admission and at the first and second postoperative day. To characterize the magnitude of MIF release, we compared blood levels of samples from cardiac surgical patients with those obtained from healthy volunteers. We assessed patient outcomes using the SAPS II at postoperative d 1 and SOFA score for the first 3 d of the eventual ICU stay. Compared to healthy volunteers, patients had already exhibited elevated MIF levels prior to surgery (64 ± 50 versus 13 ± 17 ng/mL; p < 0.05). At admission to the ICU, MIF levels reached peak values (107 ± 95 ng/mL; p < 0.01 versus baseline) that decreased throughout the observation period and had already reached preoperative values 4 h later. Postoperative MIF values were inversely correlated with SAPS II and SOFA scores during the early postoperative stay. Moreover, MIF values on postoperative d 1 were related to the calculated cardiac power index (r = 0.420, p < 0.05). Elevated postoperative MIF levels are inversely correlated with organ dysfunction in patients after cardiac surgery.
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Affiliation(s)
- Christian Stoppe
- Department of Anesthesiology, University Hospital, RWTH Aachen, Germany.
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Cohen S, Shachar I. Cytokines as regulators of proliferation and survival of healthy and malignant peripheral B cells. Cytokine 2012; 60:13-22. [PMID: 22784632 DOI: 10.1016/j.cyto.2012.06.019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 05/21/2012] [Accepted: 06/04/2012] [Indexed: 12/31/2022]
Abstract
Adaptive immunity depends on the production and maintenance of a pool of mature peripheral lymphocytes throughout life. The signals regulating the survival of mature splenic B cells have become a major focus in recent studies of B cell immunology. Lasting B cell persistence in the periphery is dependent on survival signals that are transduced by cell surface receptors. Cytokines have been shown to play a critical role in maintaining lymphocyte homeostasis. This review focuses on the role of cytokines and their receptors in the regulation of peripheral B cell survival, with an emphasis on those that have received relatively less attention in the literature.
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Affiliation(s)
- Sivan Cohen
- Department of Immunology, Weizmann Institute of Science, Rehovot 76100, Israel
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