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McColl LF, Chen X, Solga MD, Schlegel K, Haughey SP, Lobo PI, Fread K, Zunder E, Cha R, Park S, Christophel JJ, Cui Q, Dighe AS. BMP-6 promotes type 2 immune response during enhancement of rat mandibular bone defect healing. Front Immunol 2023; 14:1064238. [PMID: 36845161 PMCID: PMC9950738 DOI: 10.3389/fimmu.2023.1064238] [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: 10/08/2022] [Accepted: 01/31/2023] [Indexed: 02/12/2023] Open
Abstract
Introduction Bone morphogenetic proteins (BMPs) are used as key therapeutic agents for the treatment of difficult fractures. While their effects on osteoprogenitors are known, little is known about their effects on the immune system. Methods We used permutations of BMP-6 (B), vascular endothelial growth factor (V), and Hedgehog signaling pathway activator smoothened agonist (S), to treat a rat mandibular defect and investigated healing outcomes at week 8, in correlation with the cellular landscape of the immune cells in the fracture callus at week 2. Results Maximum recruitment of immune cells to the fracture callus is known to occur at week 2. While the control, S, V, and VS groups remained as nonunions at week 8; all BMP-6 containing groups - B, BV, BS and BVS, showed near-complete to complete healing. This healing pattern was strongly associated with significantly higher ratios of CD4 T (CD45+CD3+CD4+) to putative CD8 T cells (CD45+CD3+CD4-), in groups treated with any permutation of BMP-6. Although, the numbers of putative M1 macrophages (CD45+CD3-CD11b/c+CD38high) were significantly lower in BMP-6 containing groups in comparison with S and VS groups, percentages of putative - Th1 cells or M1 macrophages (CD45+CD4+IFN-γ+) and putative - NK, NKT or cytotoxic CD8T cells (CD45+CD4-IFN-γ+) were similar in control and all treatment groups. Further interrogation revealed that the BMP-6 treatment promoted type 2 immune response by significantly increasing the numbers of CD45+CD3-CD11b/c+CD38low putative M2 macrophages, putative - Th2 cells or M2 macrophages (CD45+CD4+IL-4+) cells and putative - mast cells, eosinophils or basophils (CD45+CD4-IL-4+ cells). CD45- non-haematopoietic fractions of cells which encompass all known osteoprogenitor stem cells populations, were similar in control and treatment groups. Discussion This study uncovers previously unidentified regulatory functions of BMP-6 and shows that BMP-6 enhances fracture healing by not only acting on osteoprogenitor stem cells but also by promoting type 2 immune response.
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Affiliation(s)
- Logan F. McColl
- Department of Orthopedic Surgery, University of Virginia Health System, Charlottesville, VA, United States
| | - Xizhao Chen
- Department of Orthopedic Surgery, University of Virginia Health System, Charlottesville, VA, United States
| | - Michael D. Solga
- Flow Cytometry Core Facility, University of Virginia, Charlottesville, VA, United States
| | - Kailo Schlegel
- Department of Nephrology, University of Virginia Health System, Charlottesville, VA, United States
| | - Sean P. Haughey
- Department of Orthopedic Surgery, University of Virginia Health System, Charlottesville, VA, United States
| | - Peter I. Lobo
- Department of Nephrology, University of Virginia Health System, Charlottesville, VA, United States
| | - Kristen Fread
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States
| | - Eli Zunder
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA, United States
| | - Ryan Cha
- Department of Orthopedic Surgery, University of Virginia Health System, Charlottesville, VA, United States
| | - Stephen Park
- Department of Otolaryngology–Head and Neck Surgery, University of Virginia Health System, Charlottesville, VA, United States
| | - J. Jared Christophel
- Department of Otolaryngology–Head and Neck Surgery, University of Virginia Health System, Charlottesville, VA, United States
| | - Quanjun Cui
- Department of Orthopedic Surgery, University of Virginia Health System, Charlottesville, VA, United States
| | - Abhijit S. Dighe
- Department of Orthopedic Surgery, University of Virginia Health System, Charlottesville, VA, United States,*Correspondence: Abhijit S. Dighe,
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Wei W, Li G, Liu Z, Yang H, Liu S, Zou X, Jiao Y. Feibi decoction-medicated serum inhibits lipopolysaccharide-induced inflammation in RAW264.7 cells and BMDMs. Exp Ther Med 2022; 23:110. [PMID: 34976152 DOI: 10.3892/etm.2021.11033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 07/06/2021] [Indexed: 02/05/2023] Open
Abstract
Feibi decoction (FBD) is a traditional Chinese herbal medicine and has been clinically used in the treatment of pulmonary fibrosis (PF), which is characterized by diffuse interstitial inflammation and exaggerated collagen accumulation. However, the potential mechanisms remain to be elucidated. The present study aimed to investigate the effect of FBD-medicated serum (FBDS) on lipopolysaccharide (LPS)-induced inflammation in macrophages. In RAW264.7 macrophages and bone marrow-derived macrophages (BMDMs), FBDS treatment significantly inhibited the production of pro-inflammatory cytokines induced by LPS. In addition, it was indicated that FBDS treatment suppressed the activation of NF-κB and Smad2/Smad3 following LPS treatment. Furthermore, FBDS treatment decreased the expression of transforming growth factor-β1 and chitinase-3-like protein 1. In conclusion, the results demonstrated that treatment with FBDS inhibited LPS-induced inflammation in RAW264.7 and BMDM cells. These data may improve understanding of the effect of FBD on anti-inflammation and help determine the mechanisms underlying the alleviation of PF via FBD.
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Affiliation(s)
- Wan Wei
- Graduate School, Beijing University of Chinese Medicine, Beijing 100029, P.R. China.,Dongfang Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100078, P.R. China
| | - Guodong Li
- Graduate School, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Zhaoheng Liu
- Graduate School, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Haojie Yang
- Graduate School, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Shuo Liu
- Graduate School, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Xinxin Zou
- Graduate School, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Yang Jiao
- Dongfang Hospital Affiliated to Beijing University of Chinese Medicine, Beijing 100078, P.R. China
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Mausner-Fainberg K, Benhamou M, Golan M, Kimelman NB, Danon U, Marom E, Karni A. Specific Blockade of Bone Morphogenetic Protein-2/4 Induces Oligodendrogenesis and Remyelination in Demyelinating Disorders. Neurotherapeutics 2021; 18:1798-1814. [PMID: 34159538 PMCID: PMC8608985 DOI: 10.1007/s13311-021-01068-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2021] [Indexed: 02/05/2023] Open
Abstract
Oligodendrocyte precursor cells (OPCs) are present in demyelinated lesions of multiple sclerosis (MS) patients. However, their differentiation into functional oligodendrocytes is insufficient, and most lesions evolve into nonfunctional astroglial scars. Blockade of bone morphogenetic protein (BMP) signaling induces differentiation of OPCs into myelin-producing oligodendrocytes. We studied the effect of specific blockade of BMP-2/4 signaling, by intravenous (IV) treatment with anti-BMP-2/4 neutralizing mAb in both the inflammatory model of relapsing experimental autoimmune encephalomyelitis (R-EAE) and the cuprizone-toxic model of demyelination in mice. Administration of anti-BMP-2/4 to R-EAE-induced mice, on day 9 post-immunization (p.i.), ameliorated R-EAE signs, diminished the expression of phospho-SMAD1/5/8, primarily within the astrocytic lineage, increased the numbers of de novo immature and mature oligodendrocytes, and reduced the numbers of newly generated astrocytes within the spinal cord as early as day 18 p.i. This effect was accompanied with elevated remyelination, manifested by increased density of remyelinating axons (0.8 < g-ratios < 1), and reduced fully demyelinated and demyelinating axons, in the anti-BMP-2/4-treated R-EAE mice, studied by electron microscopy. No significant immunosuppressive effect was observed in the CNS and in the periphery, during the peak of the first attack, or at the end of the experiment. Moreover, IV treatment with anti-BMP-2/4 mAb in the cuprizone-challenged mice augmented the numbers of mature oligodendrocytes and remyelination in the corpus callosum during the recovery phase of the disease. Based on our findings, the specific blockade of BMP-2/4 has a therapeutic potential in demyelinating disorders such as MS, by inducing early oligodendrogenesis-mediated remyelination in the affected tissue.
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Affiliation(s)
- Karin Mausner-Fainberg
- Neuroimmunology Laboratory, Neuroimmunology and Multiple Sclerosis Unit, Neurology Division, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, 6423906, Tel Aviv, Israel
| | - Moshe Benhamou
- Neuroimmunology Laboratory, Neuroimmunology and Multiple Sclerosis Unit, Neurology Division, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, 6423906, Tel Aviv, Israel
- Sackler's Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Maya Golan
- Neuroimmunology Laboratory, Neuroimmunology and Multiple Sclerosis Unit, Neurology Division, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, 6423906, Tel Aviv, Israel
| | | | - Uri Danon
- Stem Cell Medicine Ltd, Jerusalem, Israel
| | - Ehud Marom
- Stem Cell Medicine Ltd, Jerusalem, Israel
| | - Arnon Karni
- Neuroimmunology Laboratory, Neuroimmunology and Multiple Sclerosis Unit, Neurology Division, Tel Aviv Sourasky Medical Center, 6 Weizmann Street, 6423906, Tel Aviv, Israel.
- Sackler's Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
- Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel.
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Varga E, Pap R, Jánosa G, Sipos K, Pandur E. IL-6 Regulates Hepcidin Expression Via the BMP/SMAD Pathway by Altering BMP6, TMPRSS6 and TfR2 Expressions at Normal and Inflammatory Conditions in BV2 Microglia. Neurochem Res 2021; 46:1224-1238. [PMID: 33835366 PMCID: PMC8053173 DOI: 10.1007/s11064-021-03322-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 01/08/2021] [Accepted: 01/27/2021] [Indexed: 12/19/2022]
Abstract
The hormone hepcidin plays a central role in controlling iron homeostasis. Iron-mediated hepcidin synthesis is triggered via the BMP/SMAD pathway. At inflammation, mainly IL-6 pro-inflammatory cytokine mediates the regulation of hepcidin via the JAK/STAT signalling pathway. Microglial cells of the central nervous system are able to recognize a broad spectrum of pathogens via toll-like receptors and initiate inflammatory response. Although the regulation of hepcidin synthesis is well described in many tissues, little is known about the inflammation mediated hepcidin regulation in microglia. In this study, we investigated the pathways, which are involved in HAMP regulation in BV2 microglia due to inflammatory mediators and the possible relationships between the iron regulatory pathways. Our results showed that IL-6 produced by resting BV2 cells was crucial in maintaining the basal HAMP expression and hepcidin secretion. It was revealed that IL-6 neutralization decreased both STAT3 and SMAD1/5/9 phosphorylation suggesting that IL-6 proinflammatory cytokine is necessary to maintain SMAD1/5/9 activation. We revealed that IL-6 influences BMP6 and TMPRSS6 protein levels, moreover it modified TfR2 expression, as well. In this study, we revealed that BV2 microglia increased their hepcidin secretion upon IL-6 neutralization although the major regulatory pathways were inhibited. Based on our results it seems that both at inflammation and at normal condition the absence of IL-6 triggered HAMP transcription and hepcidin secretion via the NFκB pathway and possibly by the autocrine effect of TNFα cytokine on BV2 microglia.
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Affiliation(s)
- Edit Varga
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus Str. 2, Pécs, 7624, Hungary
| | - Ramóna Pap
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus Str. 2, Pécs, 7624, Hungary
| | - Gergely Jánosa
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus Str. 2, Pécs, 7624, Hungary
| | - Katalin Sipos
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus Str. 2, Pécs, 7624, Hungary
| | - Edina Pandur
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Pécs, Rókus Str. 2, Pécs, 7624, Hungary.
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García Muro AM, García Ruvalcaba A, Rizo de la Torre LDC, Sánchez López JY. Role of the BMP6 protein in breast cancer and other types of cancer. Growth Factors 2021; 39:1-13. [PMID: 34706618 DOI: 10.1080/08977194.2021.1994964] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The BMP6 protein (Bone Morphogenetic Protein 6) is part of the superfamily of transforming growth factor-beta (TGF-β) ligands, participates in iron homeostasis, inhibits invasion by increasing adhesions and cell-cell type interactions and induces angiogenesis directly on vascular endothelial cells. BMP6 is coded by a tumor suppressor gene whose subexpression is related to the development and cancer progression; during neoplastic processes, methylation is the main mechanism by which gene silencing occurs. This work presents a review on the role of BMP6 protein in breast cancer (BC) and other types of cancer. The studies carried out to date suggest the participation of the BMP6 protein in the epithelial-mesenchymal transition (EMT) phenotype, cell growth and proliferation; however, these processes are affected in a variable way in the different types of cancer, the methylated CpG sites in BMP6 gene promoter, as well as the interaction with other proteins could be the cause of such variation.
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Affiliation(s)
- Andrea Marlene García Muro
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, México
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
| | - Azaria García Ruvalcaba
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, México
- Doctorado en Genética Humana, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
| | | | - Josefina Yoaly Sánchez López
- División de Genética, Centro de Investigación Biomédica de Occidente, Instituto Mexicano del Seguro Social, Guadalajara, México
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Eixarch H, Calvo-Barreiro L, Costa C, Reverter-Vives G, Castillo M, Gil V, Del Río JA, Montalban X, Espejo C. Inhibition of the BMP Signaling Pathway Ameliorated Established Clinical Symptoms of Experimental Autoimmune Encephalomyelitis. Neurotherapeutics 2020; 17:1988-2003. [PMID: 32681355 PMCID: PMC7851289 DOI: 10.1007/s13311-020-00885-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Bone morphogenetic proteins (BMPs) are secreted growth factors that belong to the transforming growth factor beta superfamily. BMPs have been implicated in physiological processes, but they are also involved in many pathological conditions. Multiple sclerosis (MS) is an immune-mediated disease of the central nervous system (CNS); however, its etiology remains elusive. Some evidence points to BMPs as important players in the pathogenesis of inflammatory and autoimmune disorders. In the present work, we studied the expression of BMP2, BMP4, BMP5, BMP6, BMP7, BMP type II receptor, and noggin in the immune system during different phases of experimental autoimmune encephalomyelitis (EAE). Major changes in the expression of BMPs took place in the initial phases of EAE. Indeed, those changes mainly affected BMP6 (whose expression was abrogated), BMP2, and BMP7 (whose expression was increased). In addition, we showed that in vivo inhibition of the BMP signaling pathway with small molecules ameliorated the already established clinical symptoms of EAE, as well as the CNS histopathological features. At the immune level, we observed an expansion of plasmacytoid dendritic cells (pDCs) in mice treated with small molecules that inhibit the BMP signaling pathway. pDCs could play an important role in promoting the expansion of antigen-specific regulatory T cells. Altogether, our data suggest a role for BMPs in early immune events that take place in myelin oligodendrocyte glycoprotein (MOG)-induced EAE. In addition, the clinical outcome of the disease was improved when the BMP signaling pathway was inhibited in mice that presented established EAE symptoms.
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Affiliation(s)
- Herena Eixarch
- Servei de Neurologia-Neuroimmunologia, Centre d'Esclerosi Múltiple de Catalunya, Vall d'Hebron Institut de Recerca, Hospital Universitari Vall d'Hebron, Barcelona, Spain
- Universitat Autònoma de Barcelona, 08193, Bellaterra (Cerdanyola del Vallès), Spain
| | - Laura Calvo-Barreiro
- Servei de Neurologia-Neuroimmunologia, Centre d'Esclerosi Múltiple de Catalunya, Vall d'Hebron Institut de Recerca, Hospital Universitari Vall d'Hebron, Barcelona, Spain
- Universitat Autònoma de Barcelona, 08193, Bellaterra (Cerdanyola del Vallès), Spain
| | - Carme Costa
- Servei de Neurologia-Neuroimmunologia, Centre d'Esclerosi Múltiple de Catalunya, Vall d'Hebron Institut de Recerca, Hospital Universitari Vall d'Hebron, Barcelona, Spain
- Universitat Autònoma de Barcelona, 08193, Bellaterra (Cerdanyola del Vallès), Spain
| | - Gemma Reverter-Vives
- Servei de Neurologia-Neuroimmunologia, Centre d'Esclerosi Múltiple de Catalunya, Vall d'Hebron Institut de Recerca, Hospital Universitari Vall d'Hebron, Barcelona, Spain
- Universitat Autònoma de Barcelona, 08193, Bellaterra (Cerdanyola del Vallès), Spain
| | - Mireia Castillo
- Servei de Neurologia-Neuroimmunologia, Centre d'Esclerosi Múltiple de Catalunya, Vall d'Hebron Institut de Recerca, Hospital Universitari Vall d'Hebron, Barcelona, Spain
- Universitat Autònoma de Barcelona, 08193, Bellaterra (Cerdanyola del Vallès), Spain
| | - Vanessa Gil
- Molecular and Cellular Neurobiotechnology, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Parc Científic de Barcelona, Barcelona, Spain
- Department of Cell Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
- Institute of Neuroscience, University of Barcelona, Barcelona, Spain
| | - José Antonio Del Río
- Molecular and Cellular Neurobiotechnology, Institute for Bioengineering of Catalonia (IBEC), The Barcelona Institute of Science and Technology (BIST), Parc Científic de Barcelona, Barcelona, Spain
- Department of Cell Biology, Physiology and Immunology, Universitat de Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Barcelona, Spain
- Institute of Neuroscience, University of Barcelona, Barcelona, Spain
| | - Xavier Montalban
- Servei de Neurologia-Neuroimmunologia, Centre d'Esclerosi Múltiple de Catalunya, Vall d'Hebron Institut de Recerca, Hospital Universitari Vall d'Hebron, Barcelona, Spain
- Universitat Autònoma de Barcelona, 08193, Bellaterra (Cerdanyola del Vallès), Spain
- Division of Neurology, St Michael's Hospital, University of Toronto, Toronto, Canada
| | - Carmen Espejo
- Servei de Neurologia-Neuroimmunologia, Centre d'Esclerosi Múltiple de Catalunya, Vall d'Hebron Institut de Recerca, Hospital Universitari Vall d'Hebron, Barcelona, Spain.
- Universitat Autònoma de Barcelona, 08193, Bellaterra (Cerdanyola del Vallès), Spain.
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Balaphas A, Meyer J, Perozzo R, Zeisser-Labouebe M, Berndt S, Turzi A, Fontana P, Scapozza L, Gonelle-Gispert C, Bühler LH. Platelet Transforming Growth Factor-β1 Induces Liver Sinusoidal Endothelial Cells to Secrete Interleukin-6. Cells 2020; 9:E1311. [PMID: 32466100 PMCID: PMC7290849 DOI: 10.3390/cells9051311] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 05/17/2020] [Accepted: 05/18/2020] [Indexed: 02/06/2023] Open
Abstract
The roles and interactions of platelets and liver sinusoidal endothelial cells in liver regeneration are unclear, and the trigger that initiates hepatocyte proliferation is unknown. We aimed to identify the key factors released by activated platelets that induce liver sinusoidal endothelial cells to produce interleukin-6 (IL-6), a cytokine implicated in the early phase of liver regeneration. We characterized the releasate of activated platelets inducing the in vitro production of IL-6 by mouse liver sinusoidal endothelial cells and observed that the stimulating factor was a thermolabile protein. Following gel filtration, a single fraction of activated platelet releasate induced a maximal IL-6 secretion by liver sinusoidal endothelial cells (90.2 ± 13.9 versus control with buffer, 9.0 ± 0.8 pg/mL, p < 0.05). Mass spectroscopy analysis of this fraction, followed by in silico processing, resulted in a reduced list of 18 candidates. Several proteins from the list were tested, and only recombinant transforming growth factor β1 (TGF-β1) resulted in an increased IL-6 production up to 242.7 ± 30.5 pg/mL, which was comparable to non-fractionated platelet releasate effect. Using neutralizing anti-TGF-β1 antibody or a TGF-β1 receptor inhibitor, IL-6 production by liver sinusoidal endothelial cells was dramatically reduced. These results support a role of platelet TGF-β1 β1 in the priming phase of liver regeneration.
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Affiliation(s)
- Alexandre Balaphas
- Division of Digestive Surgery, University Hospitals of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland;
- Unit of Surgical Research, University of Geneva, Rue Michel-Servet 1, 1206 Geneva, Switzerland
| | - Jeremy Meyer
- Division of Digestive Surgery, University Hospitals of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland;
- Unit of Surgical Research, University of Geneva, Rue Michel-Servet 1, 1206 Geneva, Switzerland
| | - Remo Perozzo
- Pharmaceutical Biochemistry Group, School of Pharmaceutical Sciences, University of Geneva, 1211 Geneva, Switzerland; (M.Z.-L.); (L.S.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland
| | - Magali Zeisser-Labouebe
- Pharmaceutical Biochemistry Group, School of Pharmaceutical Sciences, University of Geneva, 1211 Geneva, Switzerland; (M.Z.-L.); (L.S.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland
| | - Sarah Berndt
- Regen Lab SA, En Budron b2, 1052 Le Mont-sur-Lausanne, Switzerland; (S.B.); (A.T.)
| | - Antoine Turzi
- Regen Lab SA, En Budron b2, 1052 Le Mont-sur-Lausanne, Switzerland; (S.B.); (A.T.)
| | - Pierre Fontana
- Division of Angiology and Haemostasis, University Hospitals of Geneva, Rue Gabrielle-Perret-Gentil 4, 1205 Geneva, Switzerland;
- Geneva Platelet Group, University of Geneva, Rue Michel-Servet 1, 1206 Genève, Switzerland
| | - Leonardo Scapozza
- Pharmaceutical Biochemistry Group, School of Pharmaceutical Sciences, University of Geneva, 1211 Geneva, Switzerland; (M.Z.-L.); (L.S.)
- Institute of Pharmaceutical Sciences of Western Switzerland, University of Geneva, 1211 Geneva, Switzerland
| | - Carmen Gonelle-Gispert
- Faculty of Science and Medicine, Section of Medicine, University of Fribourg, Route Albert-Gockel 1, 1700 Fribourg, Switzerland; (C.G.-G.); (L.H.B.)
| | - Leo H. Bühler
- Faculty of Science and Medicine, Section of Medicine, University of Fribourg, Route Albert-Gockel 1, 1700 Fribourg, Switzerland; (C.G.-G.); (L.H.B.)
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Sekimata K, Sato T, Sakai N. ALK2: A Therapeutic Target for Fibrodysplasia Ossificans Progressiva and Diffuse Intrinsic Pontine Glioma. Chem Pharm Bull (Tokyo) 2020; 68:194-200. [PMID: 32115526 DOI: 10.1248/cpb.c19-00882] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Fibrodysplasia ossificans progressiva (FOP) and diffuse intrinsic pontine glioma (DIPG) are diseases that typically manifest in childhood and are associated with severely reduced life expectancy. However, there are currently no effective therapies for these diseases, which remain incurable. Activin receptor-like kinase-2 (ALK2), encoded by the ACVR1 gene, is a bone morphogenetic protein (BMP) type-I receptor subtype that plays an important physiological role in the development of bones, muscles, brain, and other organs. Constitutively active mutants of ALK2 have been identified as causative of FOP and involved in the tumorigenesis of DIPG owing to abnormal activation of BMP signaling, and therefore have emerged as promising treatment targets. Here, we describe these two diseases, along with the link to ALK2 signal transduction, and highlight potential ALK2 inhibitors that are under development to offer new hope for patients with FOP and DIPG.
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Affiliation(s)
- Katsuhiko Sekimata
- Drug Discovery Chemistry Platform Unit, RIKEN Center for Sustainable Resource Science
| | - Tomohiro Sato
- Drug Discovery Computational Chemistry Platform Unit, RIKEN Center for Biosystems Dynamics Research
| | - Naoki Sakai
- Drug Discovery Structural Biology Platform Unit, RIKEN Biosystems Dynamics Research
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West J, Chen X, Yan L, Gladson S, Loyd J, Rizwan H, Talati M. Adverse effects of BMPR2 suppression in macrophages in animal models of pulmonary hypertension. Pulm Circ 2019; 10:2045894019856483. [PMID: 31124398 PMCID: PMC7074495 DOI: 10.1177/2045894019856483] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 05/17/2019] [Indexed: 01/11/2023] Open
Abstract
Inflammatory cells contribute to irreversible damage in pulmonary arterial hypertension (PAH). We hypothesized that in PAH, dysfunctional BMPR2 signaling in macrophages contributes to pulmonary vascular injury and phenotypic changes via proinflammatory cytokine production. Studies were conducted in: (1) Rosa26-rtTA2 3 X TetO7-Bmpr2delx4 FVB/N mice (mutant Bmpr2 is universally expressed, BMPR2delx4 mice) given a weekly intra-tracheal liposomal clodronate injections for four weeks; and (2) LysM-Cre X floxed BMPR2 X floxed eGFP monocyte lineage-specific BMPR2 knockout (KO) mouse model (Bmpr2 gene expression knockdown in monocytic lineage cells) (BMPR2KO) following three weeks of sugen/hypoxia treatment. In the BMPR2delx4 mice, increased right ventricular systolic pressure (RVSP; P < 0.05) was normalized by clodronate, and in monocyte lineage-specific BMPR2KO mice sugen hypoxia treatment increased (P < 0.05) RVSP compared to control littermates, suggesting that suppressed BMPR2 in macrophages modulate RVSP in animal models of PH. In addition, in these mouse models, muscularized pulmonary vessels were increased (P < 0.05) and surrounded by an increased number of macrophages. Elimination of macrophages in BMPR2delx4 mice reduced the number of muscularized pulmonary vessels and macrophages surrounding these vessels. Further, in monocyte lineage-specific BMPR2KO mice, there was significant increase in proinflammatory cytokines, including C-X-C Motif Chemokine Ligand 12 (CXCL12), complement component 5 a (C5a), Interleukin-16 (IL-16), and secretory ICAM. C5a positive inflammatory cells present in and around the pulmonary vessels in the PAH lung could potentially be involved in pulmonary vessel remodeling. In summary, our data indicate that, in BMPR2-related PAH, macrophages with dysfunctional BMPR2 influence pulmonary vascular remodeling and phenotypic outcomes via proinflammatory cytokine production.
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Affiliation(s)
- James West
- Division of Respiratory and Critical Care, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Xinping Chen
- Division of Respiratory and Critical Care, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Ling Yan
- Division of Medical Genetics and Genomic Medicine, Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Santhi Gladson
- Division of Respiratory and Critical Care, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - James Loyd
- Division of Respiratory and Critical Care, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Hamid Rizwan
- Division of Medical Genetics and Genomic Medicine, Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Megha Talati
- Division of Respiratory and Critical Care, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, USA
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Chen B, Huang S, Su Y, Wu YJ, Hanna A, Brickshawana A, Graff J, Frangogiannis NG. Macrophage Smad3 Protects the Infarcted Heart, Stimulating Phagocytosis and Regulating Inflammation. Circ Res 2019; 125:55-70. [PMID: 31092129 DOI: 10.1161/circresaha.119.315069] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
RATIONALE TGF (transforming growth factor)-β is critically involved in myocardial injury, repair, and fibrosis, activating both Smad (small mothers against decapentaplegic)-dependent and non-Smad pathways. The in vivo role of TGF-β signaling in regulation of macrophage function is poorly understood. We hypothesized that in the infarcted myocardium, activation of TGF-β/Smad signaling in macrophages may regulate repair and remodeling. OBJECTIVE To investigate the role of macrophage-specific TGF-β Smad3 signaling in a mouse model of myocardial infarction and to dissect the mechanisms mediating Smad-dependent modulation of macrophage function. METHODS AND RESULTS TGF-βs markedly activated Smad3 in macrophages, without affecting Smad-independent pathways. Phagocytosis rapidly and directly activated macrophage Smad3, in the absence of active TGF-β release. MyS3KO (myeloid cell-specific Smad3 knockout) mice had no baseline defects but exhibited increased late mortality and accentuated dilative postmyocardial infarction remodeling. Adverse outcome in infarcted MyS3KO mice was associated with perturbations in phagocytic activity, defective transition of macrophages to an anti-inflammatory phenotype, scar expansion, and accentuated apoptosis of border zone cardiomyocytes. In vitro, Smad3 null macrophages exhibited reduced expression of genes associated with eat-me signals, such as Mfge8 (milk fat globule-epidermal growth factor factor 8), and reduced capacity to produce the anti-inflammatory mediators IL (interleukin)-10 and TGF-β1, and the angiogenic growth factor VEGF (vascular endothelial growth factor). Mfge8 partly rescued the phagocytic defect of Smad3 null macrophages, without affecting inflammatory activity. Impaired anti-inflammatory actions of Smad3 null macrophages were associated with marked attenuation of phagocytosis-induced PPAR (peroxisome proliferator-activated receptor) expression. MyS3KO mice had no significant alterations in microvascular density and interstitial fibrosis in remodeling myocardial segments. CONCLUSIONS We demonstrate that Smad3 critically regulates function of infarct macrophages, by mediating acquisition of a phagocytic phenotype and by contributing to anti-inflammatory transition. Smad3-dependent actions in macrophages protect the infarcted heart from adverse remodeling.
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Affiliation(s)
- Bijun Chen
- From the Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx, NY (B.C., S.H., Y.S., Y-J.W., A.H., A.B., N.G.F.)
| | - Shuaibo Huang
- From the Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx, NY (B.C., S.H., Y.S., Y-J.W., A.H., A.B., N.G.F.)
| | - Ya Su
- From the Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx, NY (B.C., S.H., Y.S., Y-J.W., A.H., A.B., N.G.F.)
| | - Yi-Jin Wu
- From the Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx, NY (B.C., S.H., Y.S., Y-J.W., A.H., A.B., N.G.F.)
| | - Anis Hanna
- From the Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx, NY (B.C., S.H., Y.S., Y-J.W., A.H., A.B., N.G.F.)
| | - Adipong Brickshawana
- From the Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx, NY (B.C., S.H., Y.S., Y-J.W., A.H., A.B., N.G.F.)
| | - Jonathan Graff
- Department of Developmental Biology, University of Texas Southwestern, Dallas (J.G.)
| | - Nikolaos G Frangogiannis
- From the Wilf Family Cardiovascular Research Institute, Department of Medicine (Cardiology), Albert Einstein College of Medicine, Bronx, NY (B.C., S.H., Y.S., Y-J.W., A.H., A.B., N.G.F.)
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11
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Goumans MJ, Zwijsen A, Ten Dijke P, Bailly S. Bone Morphogenetic Proteins in Vascular Homeostasis and Disease. Cold Spring Harb Perspect Biol 2018; 10:cshperspect.a031989. [PMID: 28348038 DOI: 10.1101/cshperspect.a031989] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
It is well established that control of vascular morphogenesis and homeostasis is regulated by vascular endothelial growth factor (VEGF), fibroblast growth factor (FGF), Delta-like 4 (Dll4), angiopoietin, and ephrin signaling. It has become clear that signaling by bone morphogenetic proteins (BMPs), which have a long history of studies in bone and early heart development, are also essential for regulating vascular function. Indeed, mutations that cause deregulated BMP signaling are linked to two human vascular diseases, hereditary hemorrhagic telangiectasia and pulmonary arterial hypertension. These observations are corroborated by data obtained with vascular cells in cell culture and in mouse models. BMPs are required for normal endothelial cell differentiation and for venous/arterial and lymphatic specification. In adult life, BMP signaling orchestrates neo-angiogenesis as well as vascular inflammation, remodeling, and calcification responses to shear and oxidative stress. This review emphasizes the pivotal role of BMPs in the vascular system, based on studies of mouse models and human vascular disorders.
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Affiliation(s)
- Marie-José Goumans
- Department of Molecular Cell Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - An Zwijsen
- VIB Center for the Biology of Disease, 3000 Leuven, Belgium.,KU Leuven Department of Human Genetics, 3000 Leuven, Belgium
| | - Peter Ten Dijke
- Department of Molecular Cell Biology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands.,Cancer Genomics Centre Netherlands, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Sabine Bailly
- Institut National de la Santé et de la Recherche Mécale (INSERM), U1036, 38000 Grenoble, France.,Laboratoire Biologie du Cancer et de l'Infection, Commissariat à l'Énergie Atomique et aux Energies Alternatives, Biosciences and Biotechnology Institute of Grenoble, 38000 Grenoble, France.,University of Grenoble Alpes, 38000 Grenoble, France
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12
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Dharmarajan S, Fisk DL, Sorenson CM, Sheibani N, Belecky-Adams TL. Microglia activation is essential for BMP7-mediated retinal reactive gliosis. J Neuroinflammation 2017; 14:76. [PMID: 28381236 PMCID: PMC5382432 DOI: 10.1186/s12974-017-0855-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 03/27/2017] [Indexed: 02/08/2023] Open
Abstract
Background Our previous studies have shown that BMP7 is able to trigger activation of retinal macroglia. However, these studies showed the responsiveness of Müller glial cells and retinal astrocytes in vitro was attenuated in comparison to those in vivo, indicating other retinal cell types may be mediating the response of the macroglial cells to BMP7. In this study, we test the hypothesis that BMP7-mediated gliosis is the result of inflammatory signaling from retinal microglia. Methods Adult mice were injected intravitreally with BMP7 and eyes harvested 1, 3, or 7 days postinjection. Some mice were treated with PLX5622 (PLX) to ablate microglia and were subsequently injected with control or BMP7. Processed tissue was analyzed via immunofluorescence, RT-qPCR, or ELISA. In addition, cultures of retinal microglia were treated with vehicle, lipopolysaccharide, or BMP7 to determine the effects of BMP7-isolated cells. Results Mice injected with BMP7 showed regulation of various inflammatory markers at the RNA level, as well as changes in microglial morphology. Isolated retinal microglia also showed an upregulation of BMP-signaling components following treatment. In vitro treatment of retinal astrocytes with conditioned media from activated microglia upregulated RNA levels of gliosis markers. In the absence of microglia, the mouse retina showed a subdued gliosis and inflammatory response when exposed to BMP7. Conclusions Gliosis resulting from BMP7 is mediated through an inflammatory response from retinal microglia. Electronic supplementary material The online version of this article (doi:10.1186/s12974-017-0855-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Subramanian Dharmarajan
- Department of Biology, Indiana University-Purdue University Indianapolis, 723 W Michigan St, SL306, Indianapolis, IN, 46202, USA.,Center for Developmental and Regenerative Biology, Indiana University-Purdue University Indianapolis, 723 W Michigan St, Indianapolis, IN, 46202, USA
| | - Debra L Fisk
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, 1111 Highland Avenue, 9453 WIMR, Madison, WI, 53705, USA
| | - Christine M Sorenson
- Department of Pediatrics, University of Wisconsin School of Medicine and Public Health, 1111 Highland Avenue, 9453 WIMR, Madison, WI, 53705, USA
| | - Nader Sheibani
- Department of Ophthalmology and Visual Sciences, University of Wisconsin School of Medicine and Public Health, 1111 Highland Avenue, 9453 WIMR, Madison, WI, 53705, USA
| | - Teri L Belecky-Adams
- Department of Biology, Indiana University-Purdue University Indianapolis, 723 W Michigan St, SL306, Indianapolis, IN, 46202, USA. .,Center for Developmental and Regenerative Biology, Indiana University-Purdue University Indianapolis, 723 W Michigan St, Indianapolis, IN, 46202, USA.
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TSG-6 secreted by mesenchymal stem cells suppresses immune reactions influenced by BMP-2 through p38 and MEK mitogen-activated protein kinase pathway. Cell Tissue Res 2017; 368:551-561. [PMID: 28247086 DOI: 10.1007/s00441-017-2581-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 12/26/2016] [Indexed: 12/31/2022]
Abstract
Bone morphogenetic protein 2 (BMP-2) has a critical function in bone and cartilage development and in repairing damaged organs and tissue. However, clinical use of BMP-2 at doses of 0.5-1 mg/ml for orthopedics has been associated with severe postoperative swelling requiring emergency surgical intervention. We determined whether a high concentration of BMP-2 induces inflammatory responses in macrophages and the suppression of osteogenesis in hMSCs. We obtained human periodontal ligament stem cells and bone marrow stem cells from the maxilla, i.e., human mesenchymal stem cells (hMSCs), from the periodontal ligament of extracted third molar teeth and from the bone marrow of the maxilla, respectively. Osteogenic differentiation was measured by alkaline phosphatase activity and alizarin red S staining. Proteins were assessed by flow cytometry, enzyme-linked immunosorbent assay, Western blot and immunocytochemistry. Changes of gene expression were measured by reverse transcription plus the polymerase chain reaction (RT-PCR) and real-time PCR. A high BMP-2 concentration inhibited the early stages of osteogenesis in hMSCs. Co-culturing THP-1 cells (human monocytic cells) with hMSCs reduced the late stages of osteogenesis compared with those seen in hMSCs alone. In addition, high-dose BMP-2 induced the expression of inflammatory cytokines in THP-1 cells and the expression of the anti-inflammatory cytokine tumor-necrosis-factor-α-inducible gene 6 protein (TSG-6) in hMSCs. Consistent with the anti-inflammatory effects of hMSCs when co-cultured with THP-1 cells, interleukin-1β expression was downregulated by TSG-6 treatment of THP-1 cells. Our findings suggest that a high BMP-2 concentration triggers inflammation that causes inflammatory cytokine release from THP-1 cells, leading to the suppression of osteogenesis, whereas TSG-6 secreted by hMSCs suppresses inflammatory reactions through p38 and ERK in the mitogen-activated protein kinase pathway.
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15
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Shin JA, Lim SM, Jeong SI, Kang JL, Park EM. Noggin improves ischemic brain tissue repair and promotes alternative activation of microglia in mice. Brain Behav Immun 2014; 40:143-54. [PMID: 24704569 DOI: 10.1016/j.bbi.2014.03.013] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 03/08/2014] [Accepted: 03/20/2014] [Indexed: 12/23/2022] Open
Abstract
We previously reported that bone morphogenetic proteins (BMPs) and their endogenous antagonist noggin are expressed in the brain weeks after an ischemic insult. Here, to define their roles in ischemic brain tissue repair and remodeling, we infused recombinant BMP7 or noggin into the ipsilateral ventricle of mice for 2weeks starting 2weeks after transient middle cerebral artery occlusion (MCAO). Four weeks after MCAO, we measured ischemic brain volume, functional recovery, and molecules related to neurogenesis and angiogenesis such as synaptophysin, GAP-43, and VEGF. Noggin-treated mice but not BMP7-treated mice showed preserved ipsilateral brain volume and reduced neurological deficits compared with artificial cerebrospinal fluids (aCSF)-treated mice. Noggin treatment also decreased glial scar thickness, increased levels of GAP-43 and VEGF protein, and increased the number of Iba1-positive activated microglia in the ipsilateral brain. Furthermore, noggin treatment decreased M1 markers (IL-1β, TNF-α, IL-12, CCL2 and CD86) and increased M2 markers (IL-1ra, IL-10, arginase 1, CD206 and Ym1) of activated microglia, suggesting a shift from M1 to M2 phenotypes. These results suggest that noggin improves functional recovery from ischemic stroke and enhances alternatively activated microglia, thereby promoting tissue repair and remodeling.
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Affiliation(s)
- Jin A Shin
- Department of Pharmacology, Tissue Injury Defense Research Center, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Soo Mee Lim
- Department of Radiology, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Sae Im Jeong
- Department of Pharmacology, Tissue Injury Defense Research Center, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Jihee Lee Kang
- Department of Physiology, Tissue Injury Defense Research Center, School of Medicine, Ewha Womans University, Seoul, Republic of Korea
| | - Eun-Mi Park
- Department of Pharmacology, Tissue Injury Defense Research Center, School of Medicine, Ewha Womans University, Seoul, Republic of Korea.
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Inhibition of BMP signaling suppresses metastasis in mammary cancer. Oncogene 2014; 34:2437-49. [PMID: 24998846 PMCID: PMC4689138 DOI: 10.1038/onc.2014.189] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 05/22/2014] [Accepted: 05/28/2014] [Indexed: 12/12/2022]
Abstract
Bone Morphogenetic Proteins (BMPs) are secreted cytokines/growth factors that play differing roles in cancer. BMPs are overexpressed in human breast cancers, but loss of BMP signaling in mammary carcinomas can accelerate metastasis. We show that human breast cancers display active BMP signaling, which is rarely downregulated or homozygously deleted. We hypothesized that systemic inhibition of BMP signaling in both the tumor and the surrounding microenvironment could prevent tumor progression and metastasis. To test this hypothesis, we used DMH1, a BMP antagonist, in MMTV.PyVmT expressing mice. Treatment with DMH1 reduced lung metastasis and the tumors were less proliferative and more apoptotic. In the surrounding tumor microenvironment, treatment with DMH1 altered fibroblasts, lymphatic vessels and macrophages to be less tumor promoting. These results indicate that inhibition of BMP signaling may successfully target both the tumor and the surrounding microenvironment to reduce tumor burden and metastasis.
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Prostate cancer bone metastases acquire resistance to androgen deprivation via WNT5A-mediated BMP-6 induction. Br J Cancer 2014; 110:1634-44. [PMID: 24518599 PMCID: PMC3960605 DOI: 10.1038/bjc.2014.23] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 12/09/2013] [Accepted: 01/07/2014] [Indexed: 01/04/2023] Open
Abstract
Background: Androgen ablation is the first-line therapy for patients with metastatic prostate cancer (CaP). However, castration resistance will eventually emerge. In the present study, we have investigated the role of bone morphogenetic protein-6 (BMP-6) in the development of castration-resistant prostate cancer (CRPC) in the context of bone metastases. Methods: We initially investigated the clinical course of 158 men with advanced CaP who were treated with primary androgen deprivation therapy. To elucidate the underlying mechanism of CRPC in the context of bone metastases, we examined the impact of bone stromal cells on CaP in the absence of androgens using a co-culture model. Results: In the 158 patients, we found that the median time to prostate-specific antigen progression was significantly shorter when bone metastases were present (14 months (95% CI, 10.2–17.8 months) vs 57 months (95% CI, 19.4–94.6 months)). These results suggest that bone–tumour interactions may accelerate castration resistance. Consistent with this hypothesis, in vitro co-cultures demonstrated that CaP cells proliferated under an androgen-depleted condition when incubated with bone stromal cells. Mechanistically, gene expression analysis using quantitative polymerase chain reaction arrays showed a dramatic induction of BMP-6 by CaP cell lines in the presence of bone stromal cells. Further studies revealed that WNT5A derived from bone stromal cells induced the expression of BMP-6 by CaP cells; BMP-6 in turn stimulated cellular proliferation of CaP cells in an androgen-deprived media via a physical interaction between Smad5 and β-catenin. Intracellularly, WNT5A increased BMP-6 expression via protein kinase C/NF-κB pathway in CaP cell lines. Conclusions: These observations suggest that bone–CaP interaction leads to castration resistance via WNT5A/BMP-6 loop.
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Kwon SJ, Lee GT, Lee JH, Iwakura Y, Kim WJ, Kim IY. Mechanism of pro-tumorigenic effect of BMP-6: neovascularization involving tumor-associated macrophages and IL-1a. Prostate 2014; 74:121-33. [PMID: 24185914 DOI: 10.1002/pros.22734] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 09/05/2013] [Indexed: 12/13/2022]
Abstract
INTRODUCTION. Overexpression of bone morphogenetic protein-6 (BMP-6) has been reported in human prostate cancer tissues. Previously we have demonstrated that BMP-6 enhances prostate cancer growth in mice and not in tissue culture. Herein, we have investigated the mechanism of BMP-6’s pro-tumorigenic effect in prostate cancer. METHODS. Tramp C2 murine and LNCaP human prostate cancer cell lines were co-cultured with RAW 264.7 and THP-1 cells, respectively. IL-1a knockout mice were used to confirm the role of BMP-6/IL-1a loop in vivo. Lastly, conditional macrophage null mice cd11b-DTR was used. RESULTS. The results demonstrated that BMP-6 induced the expression of IL-1a in macrophages via a cross-talk between NF-kB1 p50 and Smad1. When endothelial cells were treated with conditioned media harvested from macrophages incubated with BMP-6, tube formation was detected. In the presence of IL-1a neutralizing antibody, endothelial tube formation was blocked. In vivo, tumor growth and neovascularization decreased significantly when BMP-6 was expressed in IL-1a knockout and conditional macrophage-null mice. CONCLUSIONS. Prostate cancer-derived BMP-6 stimulates tumor-associated macrophages to produce IL-1a through a crosstalk between Smad1 and NF-kB1; IL-1a, in turn, promotes angiogenesis and prostate cancer growth.
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Lee GT, Jung YS, Ha YS, Kim JH, Kim WJ, Kim IY. Bone morphogenetic protein-6 induces castration resistance in prostate cancer cells through tumor infiltrating macrophages. Cancer Sci 2013; 104:1027-32. [PMID: 23710822 DOI: 10.1111/cas.12206] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Revised: 04/23/2013] [Accepted: 04/29/2013] [Indexed: 01/16/2023] Open
Abstract
Bone morphogenetic protein (BMP) is a pleiotropic growth factor that has been implicated in inflammation and prostate cancer (CaP) progression. We investigated the potential role of BMP-6 in the context of macrophages and castration-resistant prostate cancer. When the androgen-responsive murine (Tramp-C1 and PTENCaP8) and human (LNCaP) CaP cell lines were cocultured with macrophages in the presence of dihydrotestosterone, BMP-6 increased androgen-responsive promoter activity and cell count significantly. Subsequent studies revealed that BMP-6 increased the expression level of androgen receptor (AR) mRNA and protein in CaP cell lines only in the presence of macrophages. Simultaneously, the AR antagonists bicalutamide and MDV3100 partially or completely blocked BMP-6-induced macrophage-mediated androgen hypersensitivity in CaP cells. Abolishing interleukin-6 signaling with neutralizing antibody in CaP/macrophage cocultures inhibited the BMP-6-mediated AR upregulation in CaP cells. Using Tramp-C1 and PTENCaP8 cells with a tetracycline-inducible expression of BMP-6, the induction of BMP-6 in vivo resulted in a significant resistance to castration. However, this resistance was blocked after the removal of macrophages with clodronate liposomes. Taken together, these results show that BMP-6 induces castration resistance by increasing the expression of AR through macrophage-derived interleukin-6.
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Affiliation(s)
- Geun Taek Lee
- Section of Urologic Oncology and Dean and Betty Gallo Prostate Cancer Center, The Cancer Institute of New Jersey and Robert Wood Johnson Medical School, New Brunswick, NJ, USA
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Lee JH, Lee GT, Woo SH, Ha YS, Kwon SJ, Kim WJ, Kim IY. BMP-6 in renal cell carcinoma promotes tumor proliferation through IL-10-dependent M2 polarization of tumor-associated macrophages. Cancer Res 2013; 73:3604-14. [PMID: 23633487 DOI: 10.1158/0008-5472.can-12-4563] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Dysregulated bone morphogenetic proteins (BMP) may contribute to the development and progression of renal cell carcinoma (RCC). Herein, we report that BMP-6 promotes the growth of RCC by interleukin (IL)-10-mediated M2 polarization of tumor-associated macrophages (TAM). BMP-6-mediated IL-10 expression in macrophages required Smad5 and STAT3. In human RCC specimens, the three-marker signature BMP-6/IL-10/CD68 was associated with a poor prognosis. Furthermore, patients with elevated IL-10 serum levels had worse outcome after surgery. Together, our results suggest that BMP-6/macrophage/IL-10 regulates M2 polarization of TAMs in RCC.
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Affiliation(s)
- Jae-Ho Lee
- Section of Urologic Oncology, The Cancer Institute of New Jersey and Robert Wood Johnson Medical School, New Brunswick, NJ 08903, USA
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Wang X, Lee SO, Xia S, Jiang Q, Luo J, Li L, Yeh S, Chang C. Endothelial cells enhance prostate cancer metastasis via IL-6→androgen receptor→TGF-β→MMP-9 signals. Mol Cancer Ther 2013; 12:1026-37. [PMID: 23536722 DOI: 10.1158/1535-7163.mct-12-0895] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Although the potential roles of endothelial cells in the microvascules of prostate cancer during angiogenesis have been documented, their direct impacts on the prostate cancer metastasis remain unclear. We found that the CD31-positive and CD34-positive endothelial cells are increased in prostate cancer compared with the normal tissues and that these endothelial cells were decreased upon castration, gradually recovered with time, and increased after prostate cancer progressed into the castration-resistant stage, suggesting a potential linkage of these endothelial cells with androgen deprivation therapy. The in vitro invasion assays showed that the coculture of endothelial cells with prostate cancer cells significantly enhanced the invasion ability of the prostate cancer cells. Mechanism dissection found that coculture of prostate cancer cells with endothelial cells led to increased interleukin (IL)-6 secretion from endothelial cells, which may result in downregulation of androgen receptor (AR) signaling in prostate cancer cells and then the activation of TGF-β/matrix metalloproteinase-9 (MMP-9) signaling. The consequences of the IL-6→AR→TGFβ→MMP-9 signaling pathway might then trigger the increased invasion of prostate cancer cells. Blocking the IL-6→AR→TGFβ→MMP-9 signaling pathway either by IL-6 antibody, AR-siRNA, or TGF-β1 inhibitor all interrupted the ability of endothelial cells to influence prostate cancer invasion. These results, for the first time, revealed the important roles of endothelial cells within the prostate cancer microenvironment to promote the prostate cancer metastasis and provide new potential targets of IL-6→AR→TGFβ→MMP-9 signals to battle the prostate cancer metastasis.
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Affiliation(s)
- Xiaohai Wang
- George Whipple Lab for Cancer Research, Department of Pathology, and The Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY 14642, USA
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Thomas GD, Rückerl D, Maskrey BH, Whitfield PD, Blaxter ML, Allen JE. The biology of nematode- and IL4Rα-dependent murine macrophage polarization in vivo as defined by RNA-Seq and targeted lipidomics. Blood 2012; 120:e93-e104. [PMID: 23074280 PMCID: PMC4314526 DOI: 10.1182/blood-2012-07-442640] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2012] [Accepted: 10/10/2012] [Indexed: 01/01/2023] Open
Abstract
Alternatively activated macrophages (AAMϕ) are a major component of the response to helminth infection; however, their functions remain poorly defined. To better understand the helminth-induced AAMϕ phenotype, we performed a systems-level analysis of in vivo derived AAMϕ using an established mouse model. With next-generation RNA sequencing, we characterized the transcriptomes of peritoneal macrophages from BALB/c and IL4Rα(-/-) mice elicited by the nematode Brugia malayi, or via intraperitoneal thioglycollate injection. We defined expression profiles of AAMϕ-associated cytokines, chemokines, and their receptors, providing evidence that AAMϕ contribute toward recruitment and maintenance of eosinophilia. Pathway analysis highlighted complement as a potential AAMϕ-effector function. Up-regulated mitochondrial genes support in vitro evidence associating mitochondrial metabolism with alternative activation. We mapped macrophage transcription start sites, defining over-represented cis-regulatory motifs within AAMϕ-associated promoters. These included the binding site for PPAR transcription factors, which maintain mitochondrial metabolism. Surprisingly PPARγ, implicated in the maintenance of AAMϕ, was down-regulated on infection. PPARδ expression, however, was maintained. To explain how PPAR-mediated transcriptional activation could be maintained, we used lipidomics to quantify AAMϕ-derived eicosanoids, potential PPAR ligands. We identified the PPARδ ligand PGI(2) as the most abundant AAMϕ-derived eicosanoid and propose a PGI(2)-PPARδ axis maintains AAMϕ during B malayi implantation.
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Affiliation(s)
- Graham D Thomas
- Institute of Immunology and Infection Research and Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh, United Kingdom
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Wu X, Yung LM, Cheng WH, Yu PB, Babitt JL, Lin HY, Xia Y. Hepcidin regulation by BMP signaling in macrophages is lipopolysaccharide dependent. PLoS One 2012; 7:e44622. [PMID: 23028567 PMCID: PMC3441567 DOI: 10.1371/journal.pone.0044622] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Accepted: 08/06/2012] [Indexed: 01/24/2023] Open
Abstract
Hepcidin is an antimicrobial peptide, which also negatively regulates iron in circulation by controlling iron absorption from dietary sources and iron release from macrophages. Hepcidin is synthesized mainly in the liver, where hepcidin is regulated by iron loading, inflammation and hypoxia. Recently, we have demonstrated that bone morphogenetic protein (BMP)-hemojuvelin (HJV)-SMAD signaling is central for hepcidin regulation in hepatocytes. Hepcidin is also expressed by macrophages. Studies have shown that hepcidin expression by macrophages increases following bacterial infection, and that hepcidin decreases iron release from macrophages in an autocrine and/or paracrine manner. Although previous studies have shown that lipopolysaccharide (LPS) can induce hepcidin expression in macrophages, whether hepcidin is also regulated by BMPs in macrophages is still unknown. Therefore, we examined the effects of BMP signaling on hepcidin expression in RAW 264.7 and J774 macrophage cell lines, and in primary peritoneal macrophages. We found that BMP4 or BMP6 alone did not have any effect on hepcidin expression in macrophages although they stimulated Smad1/5/8 phosphorylation and Id1 expression. In the presence of LPS, however, BMP4 and BMP6 were able to stimulate hepcidin expression in macrophages, and this stimulation was abolished by the NF-κB inhibitor Ro1069920. These results suggest that hepcidin expression is regulated differently in macrophages than in hepatocytes, and that BMPs regulate hepcidin expression in macrophages in a LPS-NF-κB dependent manner.
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Affiliation(s)
- Xinggang Wu
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Lai-Ming Yung
- Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Wai-Hang Cheng
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Paul B. Yu
- Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Jodie L. Babitt
- Program in Anemia Signaling Research, Division of Nephrology, Program in Membrane Biology, Center for Systems Biology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Herbert Y. Lin
- Program in Anemia Signaling Research, Division of Nephrology, Program in Membrane Biology, Center for Systems Biology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Yin Xia
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China
- Shenzhen Research Institute, The Chinese University of Hong Kong, Shenzhen, China
- Jinan University-The Chinese University of Hong Kong Key Laboratory for Regenerative Medicine, Ministry of Education, Guangzhou, China
- * E-mail:
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Paiva CN, Feijó DF, Dutra FF, Carneiro VC, Freitas GB, Alves LS, Mesquita J, Fortes GB, Figueiredo RT, Souza HSP, Fantappié MR, Lannes-Vieira J, Bozza MT. Oxidative stress fuels Trypanosoma cruzi infection in mice. J Clin Invest 2012; 122:2531-42. [PMID: 22728935 DOI: 10.1172/jci58525] [Citation(s) in RCA: 125] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 04/18/2012] [Indexed: 12/13/2022] Open
Abstract
Oxidative damage contributes to microbe elimination during macrophage respiratory burst. Nuclear factor, erythroid-derived 2, like 2 (NRF2) orchestrates antioxidant defenses, including the expression of heme-oxygenase-1 (HO-1). Unexpectedly, the activation of NRF2 and HO-1 reduces infection by a number of pathogens, although the mechanism responsible for this effect is largely unknown. We studied Trypanosoma cruzi infection in mice in which NRF2/HO-1 was induced with cobalt protoporphyrin (CoPP). CoPP reduced parasitemia and tissue parasitism, while an inhibitor of HO-1 activity increased T. cruzi parasitemia in blood. CoPP-induced effects did not depend on the adaptive immunity, nor were parasites directly targeted. We also found that CoPP reduced macrophage parasitism, which depended on NRF2 expression but not on classical mechanisms such as apoptosis of infected cells, induction of type I IFN, or NO. We found that exogenous expression of NRF2 or HO-1 also reduced macrophage parasitism. Several antioxidants, including NRF2 activators, reduced macrophage parasite burden, while pro-oxidants promoted it. Reducing the intracellular labile iron pool decreased parasitism, and antioxidants increased the expression of ferritin and ferroportin in infected macrophages. Ferrous sulfate reversed the CoPP-induced decrease in macrophage parasite burden and, given in vivo, reversed their protective effects. Our results indicate that oxidative stress contributes to parasite persistence in host tissues and open a new avenue for the development of anti-T. cruzi drugs.
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Affiliation(s)
- Claudia N Paiva
- Laboratório de Inflamação e Imunidade, Departamento de Imunologia, Instituto de Microbiologia Professor Paulo de Góes (IMPPG), Rio de Janeiro, Brazil
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25
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Derwall M, Malhotra R, Lai CS, Beppu Y, Aikawa E, Seehra JS, Zapol WM, Bloch KD, Yu PB. Inhibition of bone morphogenetic protein signaling reduces vascular calcification and atherosclerosis. Arterioscler Thromb Vasc Biol 2012; 32:613-22. [PMID: 22223731 DOI: 10.1161/atvbaha.111.242594] [Citation(s) in RCA: 172] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
OBJECTIVE The expression of bone morphogenetic proteins (BMPs) is enhanced in human atherosclerotic and calcific vascular lesions. Although genetic gain- and loss-of-function experiments in mice have supported a causal role of BMP signaling in atherosclerosis and vascular calcification, it remains uncertain whether BMP signaling might be targeted pharmacologically to ameliorate both of these processes. METHODS AND RESULTS We tested the impact of pharmacological BMP inhibition on atherosclerosis and calcification in LDL receptor-deficient (LDLR-/-) mice. LDLR-/- mice fed a high-fat diet developed abundant vascular calcification within 20 weeks. Prolonged treatment of LDLR-/- mice with the small molecule BMP inhibitor LDN-193189 was well-tolerated and potently inhibited development of atheroma, as well as associated vascular inflammation, osteogenic activity, and calcification. Administration of recombinant BMP antagonist ALK3-Fc replicated the antiatherosclerotic and anti-inflammatory effects of LDN-193189. Treatment of human aortic endothelial cells with LDN-193189 or ALK3-Fc abrogated the production of reactive oxygen species induced by oxidized LDL, a known early event in atherogenesis. Unexpectedly, treatment of mice with LDN-193189 lowered LDL serum cholesterol by 35% and markedly decreased hepatosteatosis without inhibiting HMG-CoA reductase activity. Treatment with BMP2 increased, whereas LDN-193189 or ALK3-Fc inhibited apolipoprotein B100 secretion in HepG2 cells, suggesting that BMP signaling contributes to the regulation of cholesterol biosynthesis. CONCLUSION These results definitively implicate BMP signaling in atherosclerosis and calcification, while uncovering a previously unidentified role for BMP signaling in LDL cholesterol metabolism. BMP inhibition may be helpful in the treatment of atherosclerosis and associated vascular calcification.
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Affiliation(s)
- Matthias Derwall
- Anesthesia Center for Critical Care Research, Department of Anesthesia, Critical Care, and Pain Medicine, the Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
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Lee GT, Jung YS, Lee JH, Kim WJ, Kim IY. Bone morphogenetic protein 6-induced interleukin-1β expression in macrophages requires PU.1/Smad1 interaction. Mol Immunol 2011; 48:1540-7. [PMID: 21571370 DOI: 10.1016/j.molimm.2011.04.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2011] [Revised: 04/18/2011] [Accepted: 04/22/2011] [Indexed: 01/12/2023]
Abstract
Interleukin 1β (IL-1β) is a pro-inflammatory cytokine secreted by activated macrophages and monocytes. Previously, we have reported that bone morphogenetic protein-6 (BMP-6) induces inducible nitric oxide synthase (iNOS) expression via IL-1β in macrophages. In the present study, we demonstrate that BMP-6 increases IL-1β expression in macrophages via the receptors ALK3 and BMPRII as well as the downstream signaling protein Smad1. Surprisingly though, inhibition of the ERK and JNK non-Smad pathways also completely blocked the induction of IL-1β by BMP-6 in macrophages. Further analysis revealed that a physical interaction between the transcription factor PU.1 and Smad 1 is necessary for the upregulation of IL-1β expression by BMP-6 in macrophages. Taken together, these results demonstrate that BMP-6-induced IL-1β expression in macrophages is mediated via a cross-talk between the Smad and the non-Smad pathways through Smad1 and PU.1.
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Affiliation(s)
- Geun Taek Lee
- Section of Urologic Oncology and the Dean and Betty Gallo Prostate Cancer Center, The Cancer Institute of New Jersey, Robert Wood Johnson Medical School, 195 Little Albany Street #4560, New Brunswick, NJ 08903, United States
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BMP-6 inhibits MMP-9 expression by regulating heme oxygenase-1 in MCF-7 breast cancer cells. J Cancer Res Clin Oncol 2010; 137:985-95. [PMID: 21136273 DOI: 10.1007/s00432-010-0963-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2010] [Accepted: 11/16/2010] [Indexed: 10/18/2022]
Abstract
PURPOSE BMP-6, which belongs to the TGF-β superfamily, is a multifunctional molecule with distinct abilities in embryogenesis and organogenesis. Our recent research has implied that BMP-6 may suppress breast cancer metastasis. In the present study, we extended to elucidate the molecular mechanism by which BMP-6 exerts its anti-tumorigenic effect. METHODS The Boyden chamber assay was used to examine the ability of BMP-6 and HO-1 in MCF-7 malignant progress. RT-PCR, western blot, luciferase assay, and quantitative CHIP were used to determine the potential mechanism and signaling pathways by which BMP-6 and HO-1 function as anti-metastatic factors in MCF-7 cells. RESULTS The Boyden chamber assay showed that BMP-6 inhibited the migration and invasion of MCF-7 cells, which effect was significantly deprived by knockdown of HO-1. We further demonstrated that BMP-6 treatment resulted in an activation of HO-1 transcription through the recruitment of Smad1/5 to the Smad-responsive element on its promoter. In addition, BMP-6-induced up-regulation of HO-1 exhibited an inhibitory effect on MMP-9 secretion in a paracrine action in MCF-7 cells. Overexpression of BMP-6 and HO-1 synergistically suppressed MMP-9 transcription, which effect was specifically mediated via the MAPK/p38/AP-1 signaling. However, blockade of HO-1 using ZnPPIX totally abolished BMP-6-regulated MMP-9 activation in MCF-7 cells. CONCLUSIONS These observations suggest a novel role of BMP-6/HO-1 cascade to relieve breast cancer metastasis by regulating the secretion of growth factors in tumor microenvironment.
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Yang K, Wang XQ, He YS, Lu L, Chen QJ, Liu J, Shen WF. Advanced glycation end products induce chemokine/cytokine production via activation of p38 pathway and inhibit proliferation and migration of bone marrow mesenchymal stem cells. Cardiovasc Diabetol 2010; 9:66. [PMID: 20969783 PMCID: PMC2987998 DOI: 10.1186/1475-2840-9-66] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2010] [Accepted: 10/22/2010] [Indexed: 02/07/2023] Open
Abstract
Background Advanced glycation products (AGEs), as endogenous inflammatory mediator, compromise the physiological function of mesenchymal stem cells (MSCs). MSCs have a potential role in cell replacement therapy in acute myocardial infarction and ischemic cardiomyopathy. However, mechanisms of AGEs on MSCs are still not unveiled. Methods Reactive oxygen species (ROS), genes regulation, cell proliferation and migration have been detected by AGE-BSA stimulated MSCs. Results We found that in vitro stimulation with AGE-BSA induced generation of reactive oxygen species (ROS), and inhibited dose-dependently proliferation and migration of MSCs. Microarray and molecular biological assessment displayed an increased expression and secretion of Ccl2, Ccl3, Ccl4 and Il1b in a dose- and time-dependent manner. These chemokines/cytokines of equivalent concentration to those in conditioned medium exerted an inhibitory effect on MSC proliferation and migration after stimulation for 24 h. Transient elevation of phospho-p38 in MSCs upon AGE-BSA stimulation was blocked with p38 inhibitor. Conclusions The study indicates that AGE-BSA induces production of chemokines/cytokines in a dose- and time-dependent manner via activation of ROS-p38 mediated pathway. These chemokines/cytokines exert an inhibitory effect on MSC growth and migration, suggesting an amplified dysfunction of MSCs by AGEs.
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Affiliation(s)
- Ke Yang
- Department of Cardiology, Ruijin Hospital, Jiaotong University School of Medicine, Shanghai, P.R. China
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