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Behrens F, Tak PP, Østergaard M, Stoilov R, Wiland P, Huizinga TW, Berenfus VY, Vladeva S, Rech J, Rubbert-Roth A, Korkosz M, Rekalov D, Zupanets IA, Ejbjerg BJ, Geiseler J, Fresenius J, Korolkiewicz RP, Schottelius AJ, Burkhardt H. MOR103, a human monoclonal antibody to granulocyte-macrophage colony-stimulating factor, in the treatment of patients with moderate rheumatoid arthritis: results of a phase Ib/IIa randomised, double-blind, placebo-controlled, dose-escalation trial. Ann Rheum Dis 2014; 74:1058-64. [PMID: 24534756 PMCID: PMC4431325 DOI: 10.1136/annrheumdis-2013-204816] [Citation(s) in RCA: 111] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 01/24/2014] [Indexed: 02/06/2023]
Abstract
Objectives To determine the safety, tolerability and signs of efficacy of MOR103, a human monoclonal antibody to granulocyte–macrophage colony-stimulating factor (GM-CSF), in patients with rheumatoid arthritis (RA). Methods Patients with active, moderate RA were enrolled in a randomised, multicentre, double-blind, placebo-controlled, dose-escalation trial of intravenous MOR103 (0.3, 1.0 or 1.5 mg/kg) once a week for 4 weeks, with follow-up to 16 weeks. The primary outcome was safety. Results Of the 96 randomised and treated subjects, 85 completed the trial (n=27, 24, 22 and 23 for pooled placebo and MOR103 0.3, 1.0 and 1.5 mg/kg, respectively). Treatment emergent adverse events (AEs) in the MOR103 groups were mild or moderate in intensity and generally reported at frequencies similar to those in the placebo group. The most common AE was nasopharyngitis. In two cases, AEs were classified as serious because of hospitalisation: paronychia in a placebo subject and pleurisy in a MOR103 0.3 mg/kg subject. Both patients recovered fully. In exploratory efficacy analyses, subjects in the MOR103 1.0 and 1.5 mg/kg groups showed significant improvements in Disease Activity Score-28 scores and joint counts and significantly higher European League Against Rheumatism response rates than subjects receiving placebo. MOR103 1.0 mg/kg was associated with the largest reductions in disease activity parameters. Conclusions MOR103 was well tolerated and showed preliminary evidence of efficacy in patients with active RA. The data support further investigation of this monoclonal antibody to GM-CSF in RA patients and potentially in those with other immune-mediated inflammatory diseases. Trial registration number NCT01023256
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Affiliation(s)
- Frank Behrens
- CIRI/Division of Rheumatology, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany Department of Translational Medicine and Pharmacology, Fraunhofer Institute IME, Frankfurt am Main, Germany
| | - Paul P Tak
- Academic Medical Center/University of Amsterdam, Amsterdam, The Netherlands GlaxoSmithKline, Stevenage, UK University of Cambridge, Cambridge, UK
| | - Mikkel Østergaard
- Copenhagen Center for Arthritis Research, Center for Rheumatology and Spinal Diseases, Copenhagen University Hospital Glostrup, Glostrup, Denmark
| | - Rumen Stoilov
- University Hospital (MHAT) St Ivan Rilski, Sofia, Bulgaria
| | - Piotr Wiland
- Department of Rheumatology and Internal Medicine, Wroclaw Medical University, Wroclaw, Poland
| | - Thomas W Huizinga
- Department of Rheumatology, Leiden University Medic al Center, Leiden, The Netherlands
| | | | - Stoyanka Vladeva
- Second Internal Clinic UMHAT Stara Zagora, Stara Zagora, Bulgaria
| | - Juergen Rech
- University of Erlangen-Nuremberg, Erlangen, Germany
| | | | | | | | | | - Bo J Ejbjerg
- Department of Rheumatology, Hospital at Slagelse, Slagelse, Denmark
| | | | | | | | | | - Harald Burkhardt
- CIRI/Division of Rheumatology, Johann Wolfgang Goethe-University, Frankfurt am Main, Germany Department of Translational Medicine and Pharmacology, Fraunhofer Institute IME, Frankfurt am Main, Germany
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Schottelius AJ, Zügel U, Döcke WD, Zollner TM, Röse L, Mengel A, Buchmann B, Becker A, Grütz G, Naundorf S, Friedrich A, Gaestel M, Asadullah K. The role of mitogen-activated protein kinase-activated protein kinase 2 in the p38/TNF-alpha pathway of systemic and cutaneous inflammation. J Invest Dermatol 2009; 130:481-91. [PMID: 19657354 DOI: 10.1038/jid.2009.218] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Mitogen-activated protein kinase-activated protein kinase 2 (MK2) is a downstream molecule of p38, involved in the production of TNF-alpha, a key cytokine, and an established drug target for many inflammatory diseases. We investigated the role of MK2 in skin inflammation to determine its drug target potential. MK2 deficiency significantly decreased plasma TNF-alpha levels after systemic endotoxin application. Deficient mice showed decreased skin edema formation in chronic 2-O-tetradecanoylphorbol-13-acetate (TPA)-induced irritative dermatitis and in subacute 2,4-dinitrofluorobenzene (DNFB)-induced contact hypersensitivity. Surprisingly, MK2 deficiency did not inhibit edema formation in subacute 2,4-dinitrochlorobenzene (DNCB)-induced contact allergy and even increased TNF-alpha and IL-1beta levels as well as granulocyte infiltration in diseased ears. Ear inflammation in this model, however, was inhibited by TNF-alpha neutralization as it was in the subacute DNFB model. MK2 deficiency also did not show anti-inflammatory effects in acute DNFB-induced contact hypersensitivity, whereas the p38 inhibitor, SB203580, ameliorated skin inflammation supporting a pathophysiological role of p38. When evaluating possible mechanisms, we found that TNF-alpha production in MK2-deficient spleen cells was strongly diminished after TLR stimulation but less affected after T-cell receptor stimulation. Our data suggest that MK2, in contrast to its downstream effector molecule, TNF-alpha, has a rather elusive role in T-cell-dependent cutaneous inflammation.
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Abstract
Inflammation and cancer have been viewed as closely linked for many years. This link is not merely a loose association but causative. In colorectal cancer (CRC), chronic inflammation as observed in inflammatory bowel (IBD) disease is a key predisposing factor and IBD-associated CRC comprises five percent of all CRCs. Although the molecular mechanisms linking IBD with CRC are not well understood, recent results obtained in preclinical models point to the transcription factor NF-kappaB as a central player. On the one hand, NF-kappaB regulates the expression of various cytokines and modulates the inflammatory processes in IBD. On the other, NF-kappaB stimulates the proliferation of tumor cells and enhances their survival through the regulation of anti-apoptotic genes. Furthermore, it has been clearly established that most carcinogens and tumor promoters activate NF-kappaB, while chemopreventive agents generally suppress this transcription factor. Actually, several lines of evidence suggest that activation of NF-kappaB may cause cancer. These include the finding that NF-kappaB genes can be oncogenes, and that this transcription factor controls apoptosis, cell-cycle progression and proliferation, and possibly also cell differentiation.
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Affiliation(s)
- Arndt J Schottelius
- Development Sciences, Genentech, Inc., 1 DNA Way, South San Francisco, CA 94080, USA
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Guilford WJ, Bauman JG, Skuballa W, Bauer S, Wei GP, Davey D, Schaefer C, Mallari C, Terkelsen J, Tseng JL, Shen J, Subramanyam B, Schottelius AJ, Parkinson JF. Novel 3-Oxa Lipoxin A4Analogues with Enhanced Chemical and Metabolic Stability Have Anti-inflammatory Activity in Vivo. J Med Chem 2004; 47:2157-65. [PMID: 15056011 DOI: 10.1021/jm030569l] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Lipoxin A(4) (LXA(4)) is a structurally and functionally distinct natural product called an eicosanoid, which displays immunomodulatory and anti-inflammatory activity but is rapidly metabolized to inactive catabolites in vivo. A previously described analogue of LXA(4), methyl (5R,6R,7E,9E,11Z,13E,15S)-16-(4-fluorophenoxy)-5,6,15-trihydroxy-7,9,11,13-hexadecatetraenoate (2, ATLa), was shown to have a poor pharmacokinetic profile after both oral and intravenous administration, as well as sensitivity to acid and light. The chemical stability of the corresponding E,E,E-trien-11-yne analogue, 3, was improved over 2 without loss of efficacy in the mouse air pouch model of inflammation. Careful analysis of the plasma samples from the pharmacokinetic assays for both 2 and 3 identified a previously undetected metabolite, which is consistent with metabolism by beta-oxidation. The formation of the oxidative metabolites was eliminated with the corresponding 3-oxatetraene, 4, and the 3-oxatrien-11-yne, 5, analogues of 2. Evaluation of 3-oxa analogues 4 and 5 in calcium ionophore-induced acute skin inflammation model demonstrated similar topical potency and efficacy compared to 2. The 3-oxatrien-11-yne analogue, 5, is equipotent to 2 in an animal model of inflammation but has enhanced metabolic and chemical stability and a greatly improved pharmacokinetic profile.
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Affiliation(s)
- William J Guilford
- Department of Medicinal Chemistry, Berlex Biosciences, 2600 Hilltop Drive, Richmond, CA 94804, USA.
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Driessler F, Venstrom K, Sabat R, Asadullah K, Schottelius AJ. Molecular mechanisms of interleukin-10-mediated inhibition of NF-kappaB activity: a role for p50. Clin Exp Immunol 2004; 135:64-73. [PMID: 14678266 PMCID: PMC1808913 DOI: 10.1111/j.1365-2249.2004.02342.x] [Citation(s) in RCA: 193] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Nuclear factor kappa B (NF-kappaB) is a transcription factor pivotal for the development of inflammation. A dysregulation of NF-kappaB has been shown to play an important role in many chronic inflammatory diseases including rheumatoid arthritis, inflammatory bowel disease and psoriasis. Although classical NF-kappaB, a heterodimer composed of the p50 and p65 subunits, has been well studied, little is known about gene regulation by other hetero- and homodimeric forms of NF-kappaB. While p65 possesses a transactivation domain, p50 does not. Indeed, p50/p50 homodimers have been shown to inhibit transcriptional activity. We have recently shown that Interleukin-10 exerts its anti-inflammatory activity in part through the inhibition of NF-kappaB by blocking IkappaB kinase activity and by inhibiting NF-kappaB already found in the nucleus. Since the inhibition of nuclear NF-kappaB could not be explained by an increase of nuclear IkappaB, we sought to further investigate the mechanisms involved in the inhibition of NF-kappaB by IL-10. We show here that IL-10 selectively induced nuclear translocation and DNA-binding of p50/p50 homodimers in human monocytic cells. TNF-alpha treatment led to a strong translocation of p65 and p50, whereas pretreatment with IL-10 followed by TNF-alpha blocked p65 translocation but did not alter the strong translocation of p50. Furthermore, macrophages of p105/p50-deficient mice exhibited a significantly decreased constitutive production of MIP-2alpha and IL-6 in comparison to wild type controls. Surprisingly, IL-10 inhibited high constitutive levels of these cytokines in wt macrophages but not in p105/p50 deficient cells. Our findings suggest that the selective induction of nuclear translocation and DNA-binding of the repressive p50/p50 homodimer is an important anti-inflammatory mechanism utilized by IL-10 to repress inflammatory gene transcription.
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Affiliation(s)
- F Driessler
- Research Business Area Dermatology, Research Laboratories of Schering AG, Berlin, Germany
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Affiliation(s)
- Arndt J Schottelius
- Institute of Medical Immunology, University Hospital Charité, Humboldt University Berlin, Schumannstrasse 20-21, D-10117 Berlin, Germany.
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Schottelius AJ, Giesen C, Asadullah K, Fierro IM, Colgan SP, Bauman J, Guilford W, Perez HD, Parkinson JF. An aspirin-triggered lipoxin A4 stable analog displays a unique topical anti-inflammatory profile. J Immunol 2002; 169:7063-70. [PMID: 12471142 DOI: 10.4049/jimmunol.169.12.7063] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Lipoxins and 15-epi-lipoxins are counter-regulatory lipid mediators that modulate leukocyte trafficking and promote the resolution of inflammation. To assess the potential of lipoxins as novel anti-inflammatory agents, a stable 15-epi-lipoxin A(4) analog, 15-epi-16-p-fluorophenoxy-lipoxin A(4) methyl ester (ATLa), was synthesized by total organic synthesis and examined for efficacy relative to a potent leukotriene B(4) (LTB(4)) receptor antagonist (LTB(4)R-Ant) and the clinically used topical glucocorticoid methylprednisolone aceponate. In vitro, ATLa was 100-fold more potent than LTB(4)R-Ant for inhibiting neutrophil chemotaxis and trans-epithelial cell migration induced by fMLP, but was approximately 10-fold less potent than the LTB(4)R-Ant in blocking responses to LTB(4). A broad panel of cutaneous inflammation models that display pathological aspects of psoriasis, atopic dermatitis, and allergic contact dermatitis was used to directly compare the topical efficacy of ATLa with that of LTB(4)R-Ant and methylprednisolone aceponate. ATLa was efficacious in all models tested: LTB(4)/Iloprost-, calcium ionophore-, croton oil-, and mezerein-induced inflammation and trimellitic anhydride-induced allergic delayed-type hypersensitivity. ATLa was efficacious in mouse and guinea pig skin inflammation models, exhibiting dose-dependent effects on edema, neutrophil or eosinophil infiltration, and epidermal hyperproliferation. We conclude that the LXA(4) and aspirin-triggered LXA(4) pathways play key anti-inflammatory roles in vivo. Moreover, these results suggest that ATLa and related LXA(4) analogs may have broad therapeutic potential in inflammatory disorders and could provide an alternative to corticosteroids in certain clinical settings.
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Affiliation(s)
- Arndt J Schottelius
- Research Business Area Dermatology, Research Laboratories, Schering AG, Berlin, Germany
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Madrid LV, Wang CY, Guttridge DC, Schottelius AJ, Baldwin AS, Mayo MW. Akt suppresses apoptosis by stimulating the transactivation potential of the RelA/p65 subunit of NF-kappaB. Mol Cell Biol 2000; 20:1626-38. [PMID: 10669740 PMCID: PMC85346 DOI: 10.1128/mcb.20.5.1626-1638.2000] [Citation(s) in RCA: 536] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
It is well established that cell survival signals stimulated by growth factors, cytokines, and oncoproteins are initiated by phosphoinositide 3-kinase (PI3K)- and Akt-dependent signal transduction pathways. Oncogenic Ras, an upstream activator of Akt, requires NF-kappaB to initiate transformation, at least partially through the ability of NF-kappaB to suppress transformation-associated apoptosis. In this study, we show that oncogenic H-Ras requires PI3K and Akt to stimulate the transcriptional activity of NF-kappaB. Activated forms of H-Ras and MEKK stimulate signals that result in nuclear translocation and DNA binding of NF-kappaB as well as stimulation of the NF-kappaB transactivation potential. In contrast, activated PI3K or Akt stimulates NF-kappaB-dependent transcription by stimulating transactivation domain 1 of the p65 subunit rather than inducing NF-kappaB nuclear translocation via IkappaB degradation. Inhibition of IkappaB kinase (IKK), using an IKKbeta dominant negative protein, demonstrated that activated Akt requires IKK to efficiently stimulate the transactivation domain of the p65 subunit of NF-kappaB. Inhibition of endogenous Akt activity sensitized cells to H-Ras(V12)-induced apoptosis, which was associated with a loss of NF-kappaB transcriptional activity. Finally, Akt-transformed cells were shown to require NF-kappaB to suppress the ability of etoposide to induce apoptosis. Our work demonstrates that, unlike activated Ras, which can stimulate parallel pathways to activate both DNA binding and the transcriptional activity of NF-kappaB, Akt stimulates NF-kappaB predominantly by upregulating of the transactivation potential of p65.
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Affiliation(s)
- L V Madrid
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina 27599, USA
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Schottelius AJ, Mayo MW, Sartor RB, Baldwin AS. Interleukin-10 signaling blocks inhibitor of kappaB kinase activity and nuclear factor kappaB DNA binding. J Biol Chem 1999; 274:31868-74. [PMID: 10542212 DOI: 10.1074/jbc.274.45.31868] [Citation(s) in RCA: 391] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
The transcription factor nuclear factor kappaB (NF-kappaB) coordinates the activation of numerous genes in response to pathogens and proinflammatory cytokines and is, therefore, pivotal in the development of acute and chronic inflammatory diseases. In its inactive state, NF-kappaB is constitutively present in the cytoplasm as a p50-p65 heterodimer bound to its inhibitory protein IkappaB. Proinflammatory cytokines, such as tumor necrosis factor (TNF), activate NF-kappaB by stimulating the activity of the IkappaB kinases (IKKs) which phosphorylate IkappaBalpha on serine residues 32 and 36, targeting it for rapid degradation by the 26 S proteasome. This enables the release and nuclear translocation of the NF-kappaB complex and activation of gene transcription. Interleukin-10 (IL-10) is a pleiotropic cytokine that controls inflammatory processes by suppressing the production of proinflammatory cytokines which are known to be transcriptionally controlled by NF-kappaB. Conflicting data exists on the effects of IL-10 on TNF- and LPS-induced NF-kappaB activity in human monocytes and the molecular mechanisms involved have not been elucidated. In this study, we show that IL-10 functions to block NF-kappaB activity at two levels: 1) through the suppression of IKK activity and 2) through the inhibition of NF-kappaB DNA binding activity. This is the first evidence of an anti-inflammatory protein inhibiting IKK activity and demonstrates that IKK is a logical target for blocking inflammatory diseases.
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Affiliation(s)
- A J Schottelius
- Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, North Carolina 27599-7295, USA
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Abstract
We have identified two highly conserved RING finger proteins, ROC1 and ROC2, that are homologous to APC11, a subunit of the anaphase-promoting complex. ROC1 and ROC2 commonly interact with all cullins while APC11 specifically interacts with APC2, a cullin-related APC subunit. YeastROC1 encodes an essential gene whose reduced expression resulted in multiple, elongated buds and accumulation of Sic1p and Cln2p. ROC1 and APC11 immunocomplexes can catalyze isopeptide ligations to form polyubiquitin chains in an E1- and E2-dependent manner. ROC1 mutations completely abolished their ligase activity without noticeable changes in associated proteins. Ubiquitination of phosphorylated I kappa B alpha can be catalyzed by the ROC1 immunocomplex in vitro. Hence, combinations of ROC/APC11 and cullin proteins proteins potentially constitute a wide variety of ubiquitin ligases.
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Affiliation(s)
- T Ohta
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill 27599, USA
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Abstract
Nuclear factor (NF) kappa B is a transcription factor that controls the transcription of a variety of cellular genes regulating the inflammatory response. Many proinflammatory cytokines are transcriptionally regulated by NF-kappa B, and their increased expression has been implicated in the pathogenesis of inflammatory bowel disease (IBD). Even though it seemed clear that the increase in proinflammatory cytokine production in IBD is crucial for the initiation and perpetuation of chronic intestinal inflammation, the elements governing this dysregulation of enhanced cytokine production remained unclear. This review discusses a series of recent studies that demonstrate the activation of NF-kappa B in the inflamed mucosa, and that shed new light on the central pathogenic role of NF-kappa B in chronic intestinal inflammation. In addition to describing the activation of NF-kappa B, excitement has been generated by reports that define the molecular targets of anti-inflammatory agents, and that demonstrate the effective blockade of NF-kappa B in intestinal inflammation. These new insights into the activation and inhibition of NF-kappa B have opened new and promising avenues for a more specific treatment of chronic intestinal inflammation.
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Affiliation(s)
- A J Schottelius
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill 27599-7295, USA
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