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      Call for Papers: Beyond Biology: The Crucial Role of Sex and Gender in Oncology

      Submit here before May 31, 2024

      About Oncology Research and Treatment: 2.4 Impact Factor I 3.3 CiteScore I 0.495 Scimago Journal & Country Rank (SJR)

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      Role of MIF in inflammation and tumorigenesis.

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      Journal: Mycology
      Keywords: Humans, Immunity, Cellular, immunology, Inflammation, metabolism, pathology, Intramolecular Oxidoreductases, physiology, Macrophage Migration-Inhibitory Factors, Neoplasms

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          Abstract

          MIF has been described as a protein that plays an essential role in both innate and acquired immunity. Previous studies have demonstrated that MIF activates lymphocytes, granulocytes and monocytes/macrophages. Furthermore, MIF can counteract the physiological function of steroids, thus playing a role in immune system regulation. Further evidence for a role of MIF in immunity was obtained in mouse models of autoimmune disorders, where the inhibition of MIF resulted in a more benign disease progression. This observation made MIF an attractive therapeutic target for the treatment of these disorders. Moreover, MIF expression was found to be upregulated in a variety of different tumor cells, a finding that further attracted interest. This review provides an overview of the involvement of MIF in both autoimmune disorders and tumorigenesis and summarizes the molecular action of MIF in this context. Copyright 2008 S. Karger AG, Basel.

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          MIF is a noncognate ligand of CXC chemokine receptors in inflammatory and atherogenic cell recruitment.

          Jürgen Bernhagen, Regina Krohn, Hongqi Lue … (2007)
          The cytokine macrophage migration inhibitory factor (MIF) plays a critical role in inflammatory diseases and atherogenesis. We identify the chemokine receptors CXCR2 and CXCR4 as functional receptors for MIF. MIF triggered G(alphai)- and integrin-dependent arrest and chemotaxis of monocytes and T cells, rapid integrin activation and calcium influx through CXCR2 or CXCR4. MIF competed with cognate ligands for CXCR4 and CXCR2 binding, and directly bound to CXCR2. CXCR2 and CD74 formed a receptor complex, and monocyte arrest elicited by MIF in inflamed or atherosclerotic arteries involved both CXCR2 and CD74. In vivo, Mif deficiency impaired monocyte adhesion to the arterial wall in atherosclerosis-prone mice, and MIF-induced leukocyte recruitment required Il8rb (which encodes Cxcr2). Blockade of Mif but not of canonical ligands of Cxcr2 or Cxcr4 in mice with advanced atherosclerosis led to plaque regression and reduced monocyte and T-cell content in plaques. By activating both CXCR2 and CXCR4, MIF displays chemokine-like functions and acts as a major regulator of inflammatory cell recruitment and atherogenesis. Targeting MIF in individuals with manifest atherosclerosis can potentially be used to treat this condition.
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            MIF Signal Transduction Initiated by Binding to CD74

            Lin Leng, Christine Metz, YAN FANG … (2003)
            Macrophage migration inhibitory factor (MIF) accounts for one of the first cytokine activities to have been described, and it has emerged recently to be an important regulator of innate and adaptive immunity. MIF is an upstream activator of monocytes/macrophages, and it is centrally involved in the pathogenesis of septic shock, arthritis, and other inflammatory conditions. The protein is encoded by a unique but highly conserved gene, and X-ray crystallography studies have shown MIF to define a new protein fold and structural superfamily. Although recent work has begun to illuminate the signal transduction pathways activated by MIF, the nature of its membrane receptor has not been known. Using expression cloning and functional analysis, we report herein that CD74, a Type II transmembrane protein, is a high-affinity binding protein for MIF. MIF binds to the extracellular domain of CD74, and CD74 is required for MIF-induced activation of the extracellular signal–regulated kinase–1/2 MAP kinase cascade, cell proliferation, and PGE2 production. A recombinant, soluble form of CD74 binds MIF with a dissociation constant of ∼9 × 10−9 K d, as defined by surface plasmon resonance (BIAcore analysis), and soluble CD74 inhibits MIF-mediated extracellular signal–regulated kinase activation in defined cell systems. These data provide a molecular basis for MIF's interaction with target cells and identify it as a natural ligand for CD74, which has been implicated previously in signaling and accessory functions for immune cell activation.
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              Mechanism of a reaction in vitro associated with delayed-type hypersensitivity.

              B R Bloom, B. Bennett (1966)
              The cell type responsible for inhibition by antigen of migration in vitro of peritoneal exudate cells obtained from tuberculin-hypersensitive guinea pigs was studied. Exudate populations were separated into component cell types, the lymphocyte and the macrophage. Peritoneal lymphocytes from sensitive donors were the immunologically active cells in this system, the macrophages, being merely indicator cells which migrate. Sensitized peritoneal lymphocyte populations, upon interaction with specific antigen in vitro, elaborated into the medium a soluble material capable of inhibiting migration of normal exudate cells.
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                Author and article information

                Journal
                PubMed ID:: 18791328
                DOI:: 10.1159/000155223

                ScienceOpen disciplines: Chemistry
                Keywords: Humans,Immunity, Cellular,immunology,Inflammation,metabolism,pathology,Intramolecular Oxidoreductases,physiology,Macrophage Migration-Inhibitory Factors,Neoplasms
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                ScienceOpen disciplines: Chemistry
                Keywords: Humans, Immunity, Cellular, immunology, Inflammation, metabolism, pathology, Intramolecular Oxidoreductases, physiology, Macrophage Migration-Inhibitory Factors, Neoplasms

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