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Li R, Wang T, Walia K, Gao B, Krepinsky JC. ADAM17 activation and regulation of profibrotic responses by high glucose requires its C-terminus and FAK kinase. J Cell Sci 2018; 131:jcs.208629. [DOI: 10.1242/jcs.208629] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 12/28/2017] [Indexed: 12/23/2022] Open
Abstract
Glomerular matrix accumulation is the hallmark of diabetic nephropathy. The metalloprotease ADAM17 mediates high glucose (HG)-induced matrix production by kidney mesangial cells through release of ligands for the epidermal growth factor receptor. Here we study the mechanism by which HG activates ADAM17. We find that the C-terminus is essential for ADAM17 activation and the profibrotic response to HG. In the C-terminus, Src-mediated Y702 phosphorylation and PI3K/MEK/Erk-mediated T735 phosphorylation are critical to ADAM17 activation, but play divergent roles in ADAM17 trafficking in response to HG. While T735 phosphorylation is required for the HG-induced increase in cell surface mature ADAM17, Y702 phosphorylation is dispensable. Src, however, enables trafficking independently of its phosphorylation of ADAM17. The nonreceptor tyrosine kinase FAK is a central mediator of these processes. These data not only support a critical role for the C-terminus in ADAM17 activation and downstream profibrotic responses to HG, but also highlight FAK as a potential alternate therapeutic target for diabetic nephropathy.
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Affiliation(s)
- Renzhong Li
- Division of Nephrology, McMaster University, Hamilton, Canada
| | - Tony Wang
- Division of Nephrology, McMaster University, Hamilton, Canada
| | - Khyati Walia
- Division of Nephrology, McMaster University, Hamilton, Canada
| | - Bo Gao
- Division of Nephrology, McMaster University, Hamilton, Canada
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52
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Schäfer M, Granato DC, Krossa S, Bartels AK, Yokoo S, Düsterhöft S, Koudelka T, Scheidig AJ, Tholey A, Paes Leme AF, Grötzinger J, Lorenzen I. GRP78 protects a disintegrin and metalloprotease 17 against protein-disulfide isomerase A6 catalyzed inactivation. FEBS Lett 2017; 591:3567-3587. [PMID: 28949004 DOI: 10.1002/1873-3468.12858] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 09/18/2017] [Indexed: 12/12/2022]
Abstract
The shedding of ectodomains is a crucial mechanism in many physiological and pathological events. A disintegrin and metalloprotease-17 (ADAM17) is a key sheddase involved in essential processes, such as development, regeneration, and immune defense. ADAM17 exists in two conformations which differ in their disulfide connection in the membrane-proximal domain (MPD). Protein-disulfide isomerases (PDIs) on the cell surface convert the open MPD into a rigid closed form, which corresponds to inactive ADAM17. ADAM17 is expressed in its open activatable form in the endoplasmic reticulum (ER) and consequently must be protected against ER-resident PDI activity. Here, we show that the chaperone 78-kDa glucose-regulated protein (GRP78) protects the MPD against PDI-dependent disulfide-bond isomerization by binding to this domain and, thereby, preventing ADAM17 inhibition.
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Affiliation(s)
- Miriam Schäfer
- Institute of Biochemistry, Christian-Albrechts University, Kiel, Germany
| | - Daniela C Granato
- Laboratório de Espectrometria de Massas, Laboratório Nacional de Biociências, LNBio, CNPEM, Campinas, Brazil
| | - Sebastian Krossa
- Department of Structural Biology, Institute of Zoology, Kiel, Germany
| | | | - Sami Yokoo
- Laboratório de Espectrometria de Massas, Laboratório Nacional de Biociências, LNBio, CNPEM, Campinas, Brazil
| | | | - Tomas Koudelka
- Division of Systematic Proteome Research, Institute for Experimental Medicine, Christian-Albrechts University, Kiel, Germany
| | - Axel J Scheidig
- Department of Structural Biology, Institute of Zoology, Kiel, Germany
| | - Andreas Tholey
- Division of Systematic Proteome Research, Institute for Experimental Medicine, Christian-Albrechts University, Kiel, Germany
| | - Adriana F Paes Leme
- Laboratório de Espectrometria de Massas, Laboratório Nacional de Biociências, LNBio, CNPEM, Campinas, Brazil
| | - Joachim Grötzinger
- Institute of Biochemistry, Christian-Albrechts University, Kiel, Germany
| | - Inken Lorenzen
- Institute of Biochemistry, Christian-Albrechts University, Kiel, Germany.,Department of Structural Biology, Institute of Zoology, Kiel, Germany
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53
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Redox Regulation of Inflammatory Processes Is Enzymatically Controlled. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:8459402. [PMID: 29118897 PMCID: PMC5651112 DOI: 10.1155/2017/8459402] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 07/06/2017] [Accepted: 07/25/2017] [Indexed: 12/11/2022]
Abstract
Redox regulation depends on the enzymatically controlled production and decay of redox active molecules. NADPH oxidases, superoxide dismutases, nitric oxide synthases, and others produce the redox active molecules superoxide, hydrogen peroxide, nitric oxide, and hydrogen sulfide. These react with target proteins inducing spatiotemporal modifications of cysteine residues within different signaling cascades. Thioredoxin family proteins are key regulators of the redox state of proteins. They regulate the formation and removal of oxidative modifications by specific thiol reduction and oxidation. All of these redox enzymes affect inflammatory processes and the innate and adaptive immune response. Interestingly, this regulation involves different mechanisms in different biological compartments and specialized cell types. The localization and activity of distinct proteins including, for instance, the transcription factor NFκB and the immune mediator HMGB1 are redox-regulated. The transmembrane protein ADAM17 releases proinflammatory mediators, such as TNFα, and is itself regulated by a thiol switch. Moreover, extracellular redox enzymes were shown to modulate the activity and migration behavior of various types of immune cells by acting as cytokines and/or chemokines. Within this review article, we will address the concept of redox signaling and the functions of both redox enzymes and redox active molecules in innate and adaptive immune responses.
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54
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Guzmán-Mejía F, López-Rubalcava C, González-Espinosa C. Stimulation of nAchRα7 Receptor Inhibits TNF Synthesis and Secretion in Response to LPS Treatment of Mast Cells by Targeting ERK1/2 and TACE Activation. J Neuroimmune Pharmacol 2017; 13:39-52. [PMID: 28822039 DOI: 10.1007/s11481-017-9760-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 08/08/2017] [Indexed: 12/28/2022]
Abstract
The cholinergic anti-inflammatory pathway is recognized as one of the main mechanisms of neuromodulation of the immune system. Activation of the α7 nicotinic acetylcholine receptor (nAchRα7) suppresses cytokine synthesis in distinct immune cells but the molecular mechanisms behind this effect remain to be fully described. Mast cells (MCs) are essential players of allergic reactions and innate immunity responses related to chronic inflammation. Activation of TLR4 receptor in MCs leads to the rapid secretion of pre-synthesized TNF from intracellular pools and to the activation of NFκB, necessary for de novo synthesis of TNF and other cytokines. Here we report that the nAchRα7 receptor specific agonist GTS-21 inhibits TLR4-induced secretion of preformed TNF from MCs in vivo and in vitro. Utilizing bone marrow-derived mast cells (BMMCs) it was found that GTS-21 also diminished secretion of de novo synthesized TNF, TNF mRNA accumulation and IKK-dependent p65-NFκB phosphorylation in response to LPS. nAchRα7 triggering prevented TLR4-induced ERK1/2 phosphorylation, which resulted an essential step for TNF secretion due to the phosphorylation of the metallopeptidase responsible for TNF maturation (TACE). Main inhibitory actions of GTS-21 were prevented by AG490, an inhibitor of JAK-2 kinase. Our results show for the first time, that besides the prevention of NFκB-dependent transcription, inhibitory actions of nAchRα7 triggering include the blockade of pathways leading to exocytosis of granule-stored cytokines in MCs.
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Affiliation(s)
- F Guzmán-Mejía
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Sede Sur, Calzada de los Tenorios No 235, Colonia Granjas Coapa, Tlalpan, CP 14330, Ciudad de México, Mexico
| | - C López-Rubalcava
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Sede Sur, Calzada de los Tenorios No 235, Colonia Granjas Coapa, Tlalpan, CP 14330, Ciudad de México, Mexico
| | - C González-Espinosa
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Sede Sur, Calzada de los Tenorios No 235, Colonia Granjas Coapa, Tlalpan, CP 14330, Ciudad de México, Mexico.
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55
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Zhang M, Wang J, Jia L, Huang J, He C, Hu F, Yuan L, Wang G, Yu M, Li Z. Transmembrane TNF-α promotes activation-induced cell death by forward and reverse signaling. Oncotarget 2017; 8:63799-63812. [PMID: 28969030 PMCID: PMC5609962 DOI: 10.18632/oncotarget.19124] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 06/20/2017] [Indexed: 12/20/2022] Open
Abstract
Secretory tumor necrosis factor-alpha (sTNF-α) is known to mediate activation- induced cell death (AICD). However, the role of tmTNF-α in AICD is still obscure. Here, we demonstrated that tmTNF-α expression significantly increased accompanied with enhanced apoptosis during AICD in Jurkat and primary human T cells. Knockdown or enhancement of tmTNF-α expression in activated T cells suppressed or promoted AICD, respectively. Treatment of activated T cells with exogenous tmTNF-α significantly augmented AICD, indicating that tmTNF-α as an effector molecule mediates AICD. As tmTNF-α can function as a receptor, an anti-TNF-α polyclonal antibody was used to trigger reverse signaling of tmTNF-α. This antibody treatment upregulated the expression of Fas ligand, TNF-related apoptosis-inducing ligand and tmTNF-α to amplify AICD, and promoted activated T cells expressing death receptor 4, TNF receptor (TNFR) 1 and TNFR2 to enhance their sensitivity to AICD. Knockdown of TNFR1 or TNFR2 expression totally blocked tmTNF-α reverse signaling increased sensitivity to sTNF-α- or tmTNF-α-mediated AICD, respectively. Our results indicate that tmTNF-α functions as a death ligand in mediation of AICD and as a receptor in sensitization of activated T cells to AICD. Targeting tmTNF-α in activated T cells may be helpful in facilitating AICD for treatment of autoimmune diseases.
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Affiliation(s)
- Meng Zhang
- Department of Immunology, Basic Medical College, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Jing Wang
- Department of Immunology, Basic Medical College, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Lingwei Jia
- Molecular Medical Center, Tongji Hospital, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Jin Huang
- Department of Immunology, Basic Medical College, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Cheng He
- Department of Immunology, Basic Medical College, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Fuqing Hu
- Molecular Medical Center, Tongji Hospital, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Lifei Yuan
- Department of Immunology, Basic Medical College, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Guihua Wang
- Molecular Medical Center, Tongji Hospital, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Mingxia Yu
- Department of Immunology, Basic Medical College, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
| | - Zhuoya Li
- Department of Immunology, Basic Medical College, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, P.R. China
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56
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Frazao A, Colombo M, Fourmentraux-Neves E, Messaoudene M, Rusakiewicz S, Zitvogel L, Vivier E, Vély F, Faure F, Dréno B, Benlalam H, Bouquet F, Savina A, Pasmant E, Toubert A, Avril MF, Caignard A. Shifting the Balance of Activating and Inhibitory Natural Killer Receptor Ligands on BRAFV600E Melanoma Lines with Vemurafenib. Cancer Immunol Res 2017; 5:582-593. [PMID: 28576831 DOI: 10.1158/2326-6066.cir-16-0380] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 04/10/2017] [Accepted: 05/25/2017] [Indexed: 11/16/2022]
Abstract
Over 60% of human melanoma tumors bear a mutation in the BRAF gene. The most frequent mutation is a substitution at codon 600 (V600E), leading to a constitutively active BRAF and overactivation of the MAPK pathway. Patients harboring mutated BRAF respond to kinase inhibitors such as vemurafenib. However, these responses are transient, and relapses are frequent. Melanoma cells are efficiently lysed by activated natural killer (NK) cells. Melanoma cells express several stress-induced ligands that are recognized by activating NK-cell receptors. We have investigated the effect of vemurafenib on the immunogenicity of seven BRAF-mutated melanoma cells to NK cells and on their growth and sensitivity to NK-cell-mediated lysis. We showed that vemurafenib treatment modulated expression of ligands for two activating NK receptors, increasing expression of B7-H6, a ligand for NKp30, and decreasing expression of MICA and ULBP2, ligands for NKG2D. Vemurafenib also increased expression of HLA class I and HLA-E molecules, likely leading to higher engagement of inhibitory receptors (KIRs and NKG2A, respectively), and decreased lysis of vemurafenib-treated melanoma cell lines by cytokine-activated NK cells. Finally, we showed that whereas batimastat (a broad-spectrum matrix metalloprotease inhibitor) increased cell surface ULBP2 by reducing its shedding, vemurafenib lowered soluble ULBP2, indicating that BRAF signal inhibition diminished expression of both cell-surface and soluble forms of NKG2D ligands. Vemurafenib, inhibiting BRAF signaling, shifted the balance of activatory and inhibitory NK ligands on melanoma cells and displayed immunoregulatory effects on NK-cell functional activities. Cancer Immunol Res; 5(7); 582-93. ©2017 AACR.
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Affiliation(s)
- Alexandra Frazao
- INSERM UMRS1160, Institut Universitaire d'Hématologie, Paris, France
| | - Marina Colombo
- INSERM UMRS1160, Institut Universitaire d'Hématologie, Paris, France
| | | | | | | | | | - Eric Vivier
- Aix Marseille Université, CNRS, INSERM, CIML, Marseille, France.,Assistance Publique-Hôpitaux de Marseille, Hôpital de la Conception, Service d'Immunologie, Marseille, France
| | - Frédéric Vély
- Aix Marseille Université, CNRS, INSERM, CIML, Marseille, France.,Assistance Publique-Hôpitaux de Marseille, Hôpital de la Conception, Service d'Immunologie, Marseille, France
| | | | - Brigitte Dréno
- UMR 892-CRCNA, Institut de Recherche Thérapeutique de l'Université de Nantes, Nantes, France
| | - Houssem Benlalam
- UMR 892-CRCNA, Institut de Recherche Thérapeutique de l'Université de Nantes, Nantes, France
| | | | | | - Eric Pasmant
- Service de Biochimie et Génétique Moléculaire, Hôpital Cochin, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Antoine Toubert
- INSERM UMRS1160, Institut Universitaire d'Hématologie, Paris, France
| | | | - Anne Caignard
- INSERM UMRS1160, Institut Universitaire d'Hématologie, Paris, France.
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57
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Grötzinger J, Lorenzen I, Düsterhöft S. Molecular insights into the multilayered regulation of ADAM17: The role of the extracellular region. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2017; 1864:2088-2095. [PMID: 28571693 DOI: 10.1016/j.bbamcr.2017.05.024] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 05/25/2017] [Accepted: 05/26/2017] [Indexed: 12/22/2022]
Abstract
In contrast to many other signalling mechanisms shedding of membrane-anchored proteins is an irreversible process. A Disintegrin And Metalloproteinase (ADAM) 17 is one of the major sheddases involved in a variety of physiological and pathophysiological processes including regeneration, differentiation, and cancer progression. Due to its central role in signalling the shedding activity of ADAM17 is tightly regulated, especially on the cell surface, where shedding events take place. The activity of ADAM17 can be subdivided into a catalytic activity and the actual shedding activity. Whereas the catalytic activity is constitutively present, the shedding activity has to be induced and is tightly controlled to prevent pathological situations induced by the release of its substrates. The regulation of the shedding activity of ADAM17 is multilayered and different regions of the protease are involved. Intriguingly, its extracellular domains play crucial roles in different regulatory mechanisms. We will discuss the role of these domains in the control of ADAM17 activity. This article is part of a Special Issue entitled: Proteolysis as a Regulatory Event in Pathophysiology edited by Stefan Rose-John.
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Affiliation(s)
- Joachim Grötzinger
- Institute of Biochemistry, Christian-Albrechts-University, Olshausenstr. 40, 24118 Kiel, Germany.
| | - Inken Lorenzen
- Centre of Biochemistry and Molecular Biology, Structural Biology, Christian-Albrechts-University, Am Botanischen Garten 1-9, 24118 Kiel, Germany
| | - Stefan Düsterhöft
- Sir William Dunn School of Pathology, South Parks Road, Oxford OX1 3RE, UK
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58
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Xu J, Sriramula S, Xia H, Moreno-Walton L, Culicchia F, Domenig O, Poglitsch M, Lazartigues E. Clinical Relevance and Role of Neuronal AT 1 Receptors in ADAM17-Mediated ACE2 Shedding in Neurogenic Hypertension. Circ Res 2017; 121:43-55. [PMID: 28512108 DOI: 10.1161/circresaha.116.310509] [Citation(s) in RCA: 135] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 05/11/2017] [Accepted: 05/16/2017] [Indexed: 12/16/2022]
Abstract
RATIONALE Neurogenic hypertension is characterized by an increase in sympathetic activity and often resistance to drug treatments. We previously reported that it is also associated with a reduction of angiotensin-converting enzyme type 2 (ACE2) and an increase in a disintegrin and metalloprotease 17 (ADAM17) activity in experimental hypertension. In addition, while multiple cells within the central nervous system have been involved in the development of neurogenic hypertension, the contribution of ADAM17 has not been investigated. OBJECTIVE To assess the clinical relevance of this ADAM17-mediated ACE2 shedding in hypertensive patients and further identify the cell types and signaling pathways involved in this process. METHODS AND RESULTS Using a mass spectrometry-based assay, we identified ACE2 as the main enzyme converting angiotensin II into angiotensin-(1-7) in human cerebrospinal fluid. We also observed an increase in ACE2 activity in the cerebrospinal fluid of hypertensive patients, which was correlated with systolic blood pressure. Moreover, the increased level of tumor necrosis factor-α in those cerebrospinal fluid samples confirmed that ADAM17 was upregulated in the brain of hypertensive patients. To further assess the interaction between brain renin-angiotensin system and ADAM17, we generated mice lacking angiotensin II type 1 receptors specifically on neurons. Our data reveal that despite expression on astrocytes and other cells types in the brain, ADAM17 upregulation during deoxycorticosterone acetate-salt hypertension occurs selectively on neurons, and neuronal angiotensin II type 1 receptors are indispensable to this process. Mechanistically, reactive oxygen species and extracellular signal-regulated kinase were found to mediate ADAM17 activation. CONCLUSIONS Our data demonstrate that angiotensin II type 1 receptors promote ADAM17-mediated ACE2 shedding in the brain of hypertensive patients, leading to a loss in compensatory activity during neurogenic hypertension.
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Affiliation(s)
- Jiaxi Xu
- From the Department of Pharmacology and Experimental Therapeutics (J.X., S.S., H.X., E.L.), Cardiovascular Center of Excellence (J.X., S.S., H.X., E.L.), Neurosciences Center of Excellence (E.L.), Department of Emergency Medicine (L.M.-W.), and Department of Neurological Surgery (F.C.), Louisiana State University Health Sciences Center, New Orleans, LA; and Attoquant Diagnostics GmbH, Vienna, Austria (O.D., M.P.)
| | - Srinivas Sriramula
- From the Department of Pharmacology and Experimental Therapeutics (J.X., S.S., H.X., E.L.), Cardiovascular Center of Excellence (J.X., S.S., H.X., E.L.), Neurosciences Center of Excellence (E.L.), Department of Emergency Medicine (L.M.-W.), and Department of Neurological Surgery (F.C.), Louisiana State University Health Sciences Center, New Orleans, LA; and Attoquant Diagnostics GmbH, Vienna, Austria (O.D., M.P.)
| | - Huijing Xia
- From the Department of Pharmacology and Experimental Therapeutics (J.X., S.S., H.X., E.L.), Cardiovascular Center of Excellence (J.X., S.S., H.X., E.L.), Neurosciences Center of Excellence (E.L.), Department of Emergency Medicine (L.M.-W.), and Department of Neurological Surgery (F.C.), Louisiana State University Health Sciences Center, New Orleans, LA; and Attoquant Diagnostics GmbH, Vienna, Austria (O.D., M.P.)
| | - Lisa Moreno-Walton
- From the Department of Pharmacology and Experimental Therapeutics (J.X., S.S., H.X., E.L.), Cardiovascular Center of Excellence (J.X., S.S., H.X., E.L.), Neurosciences Center of Excellence (E.L.), Department of Emergency Medicine (L.M.-W.), and Department of Neurological Surgery (F.C.), Louisiana State University Health Sciences Center, New Orleans, LA; and Attoquant Diagnostics GmbH, Vienna, Austria (O.D., M.P.)
| | - Frank Culicchia
- From the Department of Pharmacology and Experimental Therapeutics (J.X., S.S., H.X., E.L.), Cardiovascular Center of Excellence (J.X., S.S., H.X., E.L.), Neurosciences Center of Excellence (E.L.), Department of Emergency Medicine (L.M.-W.), and Department of Neurological Surgery (F.C.), Louisiana State University Health Sciences Center, New Orleans, LA; and Attoquant Diagnostics GmbH, Vienna, Austria (O.D., M.P.)
| | - Oliver Domenig
- From the Department of Pharmacology and Experimental Therapeutics (J.X., S.S., H.X., E.L.), Cardiovascular Center of Excellence (J.X., S.S., H.X., E.L.), Neurosciences Center of Excellence (E.L.), Department of Emergency Medicine (L.M.-W.), and Department of Neurological Surgery (F.C.), Louisiana State University Health Sciences Center, New Orleans, LA; and Attoquant Diagnostics GmbH, Vienna, Austria (O.D., M.P.)
| | - Marko Poglitsch
- From the Department of Pharmacology and Experimental Therapeutics (J.X., S.S., H.X., E.L.), Cardiovascular Center of Excellence (J.X., S.S., H.X., E.L.), Neurosciences Center of Excellence (E.L.), Department of Emergency Medicine (L.M.-W.), and Department of Neurological Surgery (F.C.), Louisiana State University Health Sciences Center, New Orleans, LA; and Attoquant Diagnostics GmbH, Vienna, Austria (O.D., M.P.)
| | - Eric Lazartigues
- From the Department of Pharmacology and Experimental Therapeutics (J.X., S.S., H.X., E.L.), Cardiovascular Center of Excellence (J.X., S.S., H.X., E.L.), Neurosciences Center of Excellence (E.L.), Department of Emergency Medicine (L.M.-W.), and Department of Neurological Surgery (F.C.), Louisiana State University Health Sciences Center, New Orleans, LA; and Attoquant Diagnostics GmbH, Vienna, Austria (O.D., M.P.).
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59
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Mishra HK, Ma J, Walcheck B. Ectodomain Shedding by ADAM17: Its Role in Neutrophil Recruitment and the Impairment of This Process during Sepsis. Front Cell Infect Microbiol 2017; 7:138. [PMID: 28487846 PMCID: PMC5403810 DOI: 10.3389/fcimb.2017.00138] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/04/2017] [Indexed: 12/13/2022] Open
Abstract
Neutrophils are specialized at killing bacteria and are recruited from the blood in a rapid and robust manner during infection. A cascade of adhesion events direct their attachment to the vascular endothelium and migration into the underlying tissue. A disintegrin and metalloproteinase 17 (ADAM17) functions in the cell membrane of neutrophils and endothelial cells by cleaving its substrates, typically in a cis manner, at an extracellular site proximal to the cell membrane. This process is referred to as ectodomain shedding and it results in the downregulation of various adhesion molecules and receptors, and the release of immune regulating factors. ADAM17 sheddase activity is induced upon cell activation and rapidly modulates intravascular adhesion events in response to diverse environmental stimuli. During sepsis, an excessive systemic inflammatory response against infection, neutrophil migration becomes severely impaired. This involves ADAM17 as indicated by increased levels of its cleaved substrates in the blood of septic patients, and that ADAM17 inactivation improves neutrophil recruitment and bacterial clearance in animal models of sepsis. Excessive ADAM17 sheddase activity during sepsis thus appears to undermine in a direct and indirect manner the necessary balance between intravascular adhesion and de-adhesion events that regulate neutrophil migration into sites of infection. This review provides an overview of ADAM17 function and regulation and its potential contribution to neutrophil dysfunction during sepsis.
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Affiliation(s)
- Hemant K Mishra
- Department of Veterinary and Biomedical Sciences, University of MinnesotaSt. Paul, MN, USA
| | - Jing Ma
- Department of Veterinary and Biomedical Sciences, University of MinnesotaSt. Paul, MN, USA
| | - Bruce Walcheck
- Department of Veterinary and Biomedical Sciences, University of MinnesotaSt. Paul, MN, USA
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60
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Grieve AG, Xu H, Künzel U, Bambrough P, Sieber B, Freeman M. Phosphorylation of iRhom2 at the plasma membrane controls mammalian TACE-dependent inflammatory and growth factor signalling. eLife 2017; 6. [PMID: 28432785 PMCID: PMC5436907 DOI: 10.7554/elife.23968] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 04/20/2017] [Indexed: 12/21/2022] Open
Abstract
Proteolytic cleavage and release from the cell surface of membrane-tethered ligands is an important mechanism of regulating intercellular signalling. TACE is a major shedding protease, responsible for the liberation of the inflammatory cytokine TNFα and ligands of the epidermal growth factor receptor. iRhoms, catalytically inactive members of the rhomboid-like superfamily, have been shown to control the ER-to-Golgi transport and maturation of TACE. Here, we reveal that iRhom2 remains associated with TACE throughout the secretory pathway, and is stabilised at the cell surface by this interaction. At the plasma membrane, ERK1/2-mediated phosphorylation and 14-3-3 protein binding of the cytoplasmic amino-terminus of iRhom2 alter its interaction with mature TACE, thereby licensing its proteolytic activity. We show that this molecular mechanism is responsible for triggering inflammatory responses in primary mouse macrophages. Overall, iRhom2 binds to TACE throughout its lifecycle, implying that iRhom2 is a primary regulator of stimulated cytokine and growth factor signalling. DOI:http://dx.doi.org/10.7554/eLife.23968.001 Injury or infection can cause tissues in the body to become inflamed. The immune system triggers this inflammation to help repair the injury or fight the infection. A signal molecule known as TNF – which is produced by immune cells called macrophages – triggers inflammation. This protein is normally attached to the surface of the macrophage, and it only activates inflammation once it has been cut free. An enzyme called TACE cuts and releases TNF from the surface of macrophages. This enzyme is made inside the cell and is then transported to the surface. On the way, TACE matures from an inactive form to a fully functional enzyme. Previous work revealed that a protein called iRhom2 controls TACE maturation, but it has been unclear whether iRhom2 affects TACE in any additional ways. Grieve et al. studied the relationship between iRhom2 and TACE in more detail. The experiments show two new roles for iRhom2: in protecting TACE from being destroyed at the cell surface, and prompting TACE to release TNF to trigger inflammation. Injury or infection causes small molecules called phosphate groups to be attached to iRhom2 in macrophages, which causes TACE to release TNF. The findings of Grieve et al. provide the first evidence that iRhom2 influences the activity of TACE throughout the enzyme’s lifetime. Excessive inflammation, often triggered by the uncontrolled release of TNF, can lead to rheumatoid arthritis, cancer and many other diseases. Therefore, iRhom2 could be a promising new target for anti-inflammatory drugs that may help to treat these conditions. DOI:http://dx.doi.org/10.7554/eLife.23968.002
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Affiliation(s)
- Adam Graham Grieve
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Hongmei Xu
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Ulrike Künzel
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Paul Bambrough
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Boris Sieber
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
| | - Matthew Freeman
- Sir William Dunn School of Pathology, University of Oxford, Oxford, United Kingdom
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61
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Omoto Y, Higa-Nakamine S, Higa A, Yamamoto H. ErbB4 cleavage by gonadotropin-releasing hormone receptor stimulation in cultured gonadotroph cells. Eur J Pharmacol 2017; 799:171-179. [DOI: 10.1016/j.ejphar.2017.02.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 02/01/2017] [Accepted: 02/03/2017] [Indexed: 11/29/2022]
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62
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Xu J, Mukerjee S, Silva-Alves CRA, Carvalho-Galvão A, Cruz JC, Balarini CM, Braga VA, Lazartigues E, França-Silva MS. A Disintegrin and Metalloprotease 17 in the Cardiovascular and Central Nervous Systems. Front Physiol 2016; 7:469. [PMID: 27803674 PMCID: PMC5067531 DOI: 10.3389/fphys.2016.00469] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 09/30/2016] [Indexed: 01/19/2023] Open
Abstract
ADAM17 is a metalloprotease and disintegrin that lodges in the plasmatic membrane of several cell types and is able to cleave a wide variety of cell surface proteins. It is somatically expressed in mammalian organisms and its proteolytic action influences several physiological and pathological processes. This review focuses on the structure of ADAM17, its signaling in the cardiovascular system and its participation in certain disorders involving the heart, blood vessels, and neural regulation of autonomic and cardiovascular modulation.
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Affiliation(s)
- Jiaxi Xu
- Department of Pharmacology and Experimental Therapeutics and Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center New Orleans, LA, USA
| | - Snigdha Mukerjee
- Department of Pharmacology and Experimental Therapeutics and Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center New Orleans, LA, USA
| | | | | | - Josiane C Cruz
- Centro de Biotecnologia, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Camille M Balarini
- Centro de Ciências da Saúde, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Valdir A Braga
- Centro de Biotecnologia, Universidade Federal da Paraíba João Pessoa, Brazil
| | - Eric Lazartigues
- Department of Pharmacology and Experimental Therapeutics and Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center New Orleans, LA, USA
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63
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Control of ADAM17 activity by regulation of its cellular localisation. Sci Rep 2016; 6:35067. [PMID: 27731361 PMCID: PMC5059621 DOI: 10.1038/srep35067] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2016] [Accepted: 09/21/2016] [Indexed: 12/13/2022] Open
Abstract
An important, irreversible step in many signalling pathways is the shedding of membrane-anchored proteins. A Disintegrin And Metalloproteinase (ADAM) 17 is one of the major sheddases involved in a variety of physiological and pathophysiological processes including regeneration, differentiation, and cancer progression. This central role in signalling implies that ADAM17 activity has to be tightly regulated, including at the level of localisation. Most mature ADAM17 is localised intracellularly, with only a small amount at the cell surface. We found that ADAM17 is constitutively internalised by clathrin-coated pits and that physiological stimulators such as GPCR ligands induce ADAM17-mediated shedding, but do not alter the cell-surface abundance of the protease. In contrast, the PKC-activating phorbol ester PMA, often used as a strong inducer of ADAM17, causes not only proteolysis by ADAM17 but also a rapid increase of the mature protease at the cell surface. This is followed by internalisation and subsequent degradation of the protease. Eventually, this leads to a substantial downregulation of mature ADAM17. Our results therefore imply that physiological activation of ADAM17 does not rely on its relocalisation, but that PMA-induced PKC activity drastically dysregulates the localisation of ADAM17.
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64
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Mishra A, Guo Y, Zhang L, More S, Weng T, Chintagari NR, Huang C, Liang Y, Pushparaj S, Gou D, Breshears M, Liu L. A Critical Role for P2X7 Receptor-Induced VCAM-1 Shedding and Neutrophil Infiltration during Acute Lung Injury. THE JOURNAL OF IMMUNOLOGY 2016; 197:2828-37. [PMID: 27559050 DOI: 10.4049/jimmunol.1501041] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 07/25/2016] [Indexed: 01/23/2023]
Abstract
Pulmonary neutrophils are the initial inflammatory cells that are recruited during lung injury and are crucial for innate immunity. However, pathological recruitment of neutrophils results in lung injury. The objective of this study is to determine whether the novel neutrophil chemoattractant, soluble VCAM-1 (sVCAM-1), recruits pathological levels of neutrophils to injury sites and amplifies lung inflammation during acute lung injury. The mice with P2X7 receptor deficiency, or treated with a P2X7 receptor inhibitor or anti-VCAM-1 Abs, were subjected to a clinically relevant two-hit LPS and mechanical ventilation-induced acute lung injury. Neutrophil infiltration and lung inflammation were measured. Neutrophil chemotactic activities were determined by a chemotaxis assay. VCAM-1 shedding and signaling pathways were assessed in isolated lung epithelial cells. Ab neutralization of sVCAM-1 or deficiency or antagonism of P2X7R reduced neutrophil infiltration and proinflammatory cytokine levels. The ligands for sVCAM-1 were increased during acute lung injury. sVCAM-1 had neutrophil chemotactic activities and activated alveolar macrophages. VCAM-1 is released into the alveolar airspace from alveolar epithelial type I cells through P2X7 receptor-mediated activation of the metalloproteinase ADAM-17. In conclusion, sVCAM-1 is a novel chemoattractant for neutrophils and an activator for alveolar macrophages. Targeting sVCAM-1 provides a therapeutic intervention that could block pathological neutrophil recruitment, without interfering with the physiological recruitment of neutrophils, thus avoiding the impairment of host defenses.
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Affiliation(s)
- Amarjit Mishra
- Lundberg-Kienlen Lung Biology and Toxicology Laboratory, Department of Physiological Sciences, Oklahoma State University, Stillwater, OK 74078
| | - Yujie Guo
- Lundberg-Kienlen Lung Biology and Toxicology Laboratory, Department of Physiological Sciences, Oklahoma State University, Stillwater, OK 74078; Oklahoma Center for Respiratory and Infectious Diseases, Oklahoma State University, Stillwater, OK 74078
| | - Li Zhang
- Lundberg-Kienlen Lung Biology and Toxicology Laboratory, Department of Physiological Sciences, Oklahoma State University, Stillwater, OK 74078
| | - Sunil More
- Lundberg-Kienlen Lung Biology and Toxicology Laboratory, Department of Physiological Sciences, Oklahoma State University, Stillwater, OK 74078; Oklahoma Center for Respiratory and Infectious Diseases, Oklahoma State University, Stillwater, OK 74078
| | - Tingting Weng
- Lundberg-Kienlen Lung Biology and Toxicology Laboratory, Department of Physiological Sciences, Oklahoma State University, Stillwater, OK 74078
| | - Narendranath Reddy Chintagari
- Lundberg-Kienlen Lung Biology and Toxicology Laboratory, Department of Physiological Sciences, Oklahoma State University, Stillwater, OK 74078
| | - Chaoqun Huang
- Lundberg-Kienlen Lung Biology and Toxicology Laboratory, Department of Physiological Sciences, Oklahoma State University, Stillwater, OK 74078; Oklahoma Center for Respiratory and Infectious Diseases, Oklahoma State University, Stillwater, OK 74078
| | - Yurong Liang
- Lundberg-Kienlen Lung Biology and Toxicology Laboratory, Department of Physiological Sciences, Oklahoma State University, Stillwater, OK 74078; Oklahoma Center for Respiratory and Infectious Diseases, Oklahoma State University, Stillwater, OK 74078
| | - Samuel Pushparaj
- Lundberg-Kienlen Lung Biology and Toxicology Laboratory, Department of Physiological Sciences, Oklahoma State University, Stillwater, OK 74078; Oklahoma Center for Respiratory and Infectious Diseases, Oklahoma State University, Stillwater, OK 74078
| | - Deming Gou
- Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences, Shenzhen University, Shenzhen, Guangdong 518060, China; and
| | - Melanie Breshears
- Oklahoma Center for Respiratory and Infectious Diseases, Oklahoma State University, Stillwater, OK 74078; Department of Pathobiology, Oklahoma State University, Stillwater, OK 74078
| | - Lin Liu
- Lundberg-Kienlen Lung Biology and Toxicology Laboratory, Department of Physiological Sciences, Oklahoma State University, Stillwater, OK 74078; Oklahoma Center for Respiratory and Infectious Diseases, Oklahoma State University, Stillwater, OK 74078;
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65
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Stolarczyk M, Amatngalim GD, Yu X, Veltman M, Hiemstra PS, Scholte BJ. ADAM17 and EGFR regulate IL-6 receptor and amphiregulin mRNA expression and release in cigarette smoke-exposed primary bronchial epithelial cells from patients with chronic obstructive pulmonary disease (COPD). Physiol Rep 2016; 4:e12878. [PMID: 27561911 PMCID: PMC5002905 DOI: 10.14814/phy2.12878] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 07/08/2016] [Accepted: 07/09/2016] [Indexed: 01/31/2023] Open
Abstract
Aberrant activity of a disintegrin and metalloprotease 17 (ADAM17), also known as TACE, and epidermal growth factor receptor (EGFR) has been suggested to contribute to chronic obstructive pulmonary disease (COPD) development and progression. The aim of this study was to investigate the role of these proteins in activation of primary bronchial epithelial cells differentiated at the air-liquid interface (ALI-PBEC) by whole cigarette smoke (CS), comparing cells from COPD patients with non-COPD CS exposure of ALI-PBEC enhanced ADAM17-mediated shedding of the IL-6 receptor (IL6R) and the EGFR agonist amphiregulin (AREG) toward the basolateral compartment, which was more pronounced in cells from COPD patients than in non-COPD controls. CS transiently increased IL6R and AREG mRNA in ALI-PBEC to a similar extent in cultures from both groups, suggesting that posttranslational events determine differential shedding between COPD and non-COPD cultures. We show for the first time by in situ proximity ligation (PLA) that CS strongly enhances interactions of phosphorylated ADAM17 with AREG and IL-6R in an intracellular compartment, suggesting that CS-induced intracellular trafficking events precede shedding to the extracellular compartment. Both EGFR and ADAM17 activity contribute to CS-induced IL-6R and AREG protein shedding and to mRNA expression, as demonstrated using selective inhibitors (AG1478 and TMI-2). Our data are consistent with an autocrine-positive feedback mechanism in which CS triggers shedding of EGFR agonists evoking EGFR activation, in ADAM17-dependent manner, and subsequently transduce paracrine signaling toward myeloid cells and connective tissue. Reducing ADAM17 and EGFR activity could therefore be a therapeutic approach for the tissue remodeling and inflammation observed in COPD.
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Affiliation(s)
| | - Gimano D Amatngalim
- Pulmonology, Leiden University Medical Center (LUMC), Leiden, The Netherlands
| | - Xiao Yu
- Cell Biology, Erasmus MC, Rotterdam, The Netherlands
| | - Mieke Veltman
- Cell Biology, Erasmus MC, Rotterdam, The Netherlands
| | - Pieter S Hiemstra
- Pulmonology, Leiden University Medical Center (LUMC), Leiden, The Netherlands
| | - Bob J Scholte
- Cell Biology, Erasmus MC, Rotterdam, The Netherlands
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66
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Lemberg MK, Adrain C. Inactive rhomboid proteins: New mechanisms with implications in health and disease. Semin Cell Dev Biol 2016; 60:29-37. [PMID: 27378062 DOI: 10.1016/j.semcdb.2016.06.022] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Revised: 06/25/2016] [Accepted: 06/30/2016] [Indexed: 12/23/2022]
Abstract
Rhomboids, proteases containing an unusual membrane-integral serine protease active site, were first identified in Drosophila, where they fulfill an essential role in epidermal growth factor receptor signaling, by cleaving membrane-tethered growth factor precursors. It has recently become apparent that eukaryotic genomes harbor conserved catalytically inactive rhomboid protease homologs, including derlins and iRhoms. Here we highlight how loss of proteolytic activity was followed in evolution by impressive functional diversification, enabling these pseudoproteases to fulfill crucial roles within the secretory pathway, including protein degradation, trafficking regulation, and inflammatory signaling. We distil the current understanding of the roles of rhomboid pseudoproteases in development and disease. Finally, we address mechanistically how versatile features of proteolytically active rhomboids have been elaborated to serve the sophisticated functions of their pseudoprotease cousins. By comparing functional and structural clues, we highlight common principles shared by the rhomboid superfamily, and make mechanistic predictions.
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Affiliation(s)
- Marius K Lemberg
- Zentrum für Molekulare Biologie der Universität Heidelberg (ZMBH), DKFZ-ZMBH Allianz, Im Neuenheimer Feld 282, 69120 Heidelberg, Germany.
| | - Colin Adrain
- Instituto Gulbenkian de Ciência, Rua da Quinta Grande 6, 2780-156 Oeiras, Portugal.
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67
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Welt T, Kulic L, Hoey SE, McAfoose J, Späni C, Chadha AS, Fisher A, Nitsch RM. Acute Effects of Muscarinic M1 Receptor Modulation on AβPP Metabolism and Amyloid-β Levels in vivo: A Microdialysis Study. J Alzheimers Dis 2016; 46:971-82. [PMID: 25881909 DOI: 10.3233/jad-150152] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Indirect modulation of cholinergic activity by cholinesterase inhibition is currently a widely established symptomatic treatment for Alzheimer's disease (AD). Selective activation of certain muscarinic receptor subtypes has emerged as an alternative cholinergic-based amyloid-lowering strategy for AD, as selective muscarinic M1 receptor agonists can reduce amyloid-β (Aβ) production by shifting endoproteolytic amyloid-β protein precursor (AβPP) processing toward non-amyloidogenic pathways. In this study, we addressed the hypothesis that acute stimulation of muscarinic M1 receptors can inhibit Aβ production in awake and freely moving AβPP transgenic mice. By combining intracerebral microdialysis with retrodialysis, we determined hippocampal Aβ concentrations during simultaneous pharmacological modulation of brain M1 receptor function. Infusion with a M1 receptor agonist AF102B resulted in a rapid reduction of interstitial fluid (ISF) Aβ levels while treatment with the M1 antagonist dicyclomine increased ISF Aβ levels reaching significance within 120 minutes of treatment. The reduction in Aβ levels was associated with PKCα and ERK activation resulting in increased levels of the α-secretase ADAM17 and a shift in AβPP processing toward the non-amyloidogenic processing pathway. In contrast, treatment with the M1 receptor antagonist dicyclomine caused a decrease in levels of phosphorylated ERK that was independent of PKCα, and led to an elevation of β-secretase levels associated with increased amyloidogenic AβPP processing. The results of this study demonstrate rapid effects of in vivo M1 receptor modulation on the ISF pool of Aβ and suggest that intracerebral microdialysis with retrodialysis is a useful technical approach for monitoring acute treatment effects of muscarinic receptor modulators on AβPP/Aβ metabolism.
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Affiliation(s)
- Tobias Welt
- Division of Psychiatry Research, University of Zürich Campus Schlieren, Switzerland
| | - Luka Kulic
- Division of Psychiatry Research, University of Zürich Campus Schlieren, Switzerland.,Center for Integrative Human Physiology (ZIHP), University of Zurich, Switzerland
| | - Sarah E Hoey
- Division of Psychiatry Research, University of Zürich Campus Schlieren, Switzerland
| | - Jordan McAfoose
- Division of Psychiatry Research, University of Zürich Campus Schlieren, Switzerland
| | - Claudia Späni
- Division of Psychiatry Research, University of Zürich Campus Schlieren, Switzerland
| | | | - Abraham Fisher
- Israel Institute for Biological Research, Ness-Ziona, Israel
| | - Roger M Nitsch
- Division of Psychiatry Research, University of Zürich Campus Schlieren, Switzerland
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68
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Zhang Y, Wang X, Loesch K, May LA, Davis GE, Jiang J, Frank SJ. TIMP3 Modulates GHR Abundance and GH Sensitivity. Mol Endocrinol 2016; 30:587-99. [PMID: 27075707 DOI: 10.1210/me.2015-1302] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
GH receptor (GHR) binds GH at the cell surface via its extracellular domain and initiates intracellular signal transduction, resulting in important anabolic and metabolic actions. GH signaling is subject to dynamic regulation, which in part is exerted by modulation of cell surface GHR levels. Constitutive and inducible metalloprotease-mediated cleavage of GHR regulate GHR abundance and thereby modulate GH action. We previously demonstrated that GHR proteolysis is catalyzed by the TNF-α converting enzyme (TACE; ADAM17). Tissue inhibitors of metalloproteases-3 (TIMP3) is a natural specific inhibitor of TACE, although mechanisms underlying this inhibition are not yet fully understood. In the current study, we use two model cell lines to examine the relationships between cellular TACE, TIMP3 expression, GHR metalloproteolysis, and GH sensitivity. These two cell lines exhibited markedly different sensitivity to inducible GHR proteolysis, which correlated directly to their relative levels of mature TACE vs unprocessed TACE precursor and indirectly to their levels of cellular TIMP3. Our results implicate TIMP3 as a modulator of cell surface GHR abundance and the ability of GH to promote cellular signaling; these modulatory effects may be conferred by endogenous TIMP3 expression as well as exogenous TIMP3 exposure. Furthermore, our analysis suggests that TIMP3, in addition to regulating the activity of TACE, may also modulate the maturation of TACE, thereby affecting the abundance of the active form of the enzyme.
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Affiliation(s)
- Yue Zhang
- Department of Medicine (Y.Z., J.J., S.J.F.), Division of Endocrinology, Diabetes, and Metabolism, and Department of Cell, Developmental, and Integrative Biology (S.J.F.), University of Alabama at Birmingham, Birmingham, Alabama 35294; The Institute of Cell Biology (X.W.), Shandong University School of Medicine, Jinan 250012, China; Department of Biochemistry and Biophysics (K.L.), Texas A&M University, College Station, Texas 77843; Department of Surgery (L.A.M.), University of Tennessee College of Medicine Chattanooga, Chattanooga, Tennessee 37403; Department of Medical Pharmacology and Physiology (G.E.D.), University of Missouri School of Medicine, Columbia, Missouri 65212; and Endocrinology Section (S.J.F.), Medical Service, Veterans Affairs Medical Center, Birmingham, Alabama 35233
| | - Xiangdong Wang
- Department of Medicine (Y.Z., J.J., S.J.F.), Division of Endocrinology, Diabetes, and Metabolism, and Department of Cell, Developmental, and Integrative Biology (S.J.F.), University of Alabama at Birmingham, Birmingham, Alabama 35294; The Institute of Cell Biology (X.W.), Shandong University School of Medicine, Jinan 250012, China; Department of Biochemistry and Biophysics (K.L.), Texas A&M University, College Station, Texas 77843; Department of Surgery (L.A.M.), University of Tennessee College of Medicine Chattanooga, Chattanooga, Tennessee 37403; Department of Medical Pharmacology and Physiology (G.E.D.), University of Missouri School of Medicine, Columbia, Missouri 65212; and Endocrinology Section (S.J.F.), Medical Service, Veterans Affairs Medical Center, Birmingham, Alabama 35233
| | - Kimberly Loesch
- Department of Medicine (Y.Z., J.J., S.J.F.), Division of Endocrinology, Diabetes, and Metabolism, and Department of Cell, Developmental, and Integrative Biology (S.J.F.), University of Alabama at Birmingham, Birmingham, Alabama 35294; The Institute of Cell Biology (X.W.), Shandong University School of Medicine, Jinan 250012, China; Department of Biochemistry and Biophysics (K.L.), Texas A&M University, College Station, Texas 77843; Department of Surgery (L.A.M.), University of Tennessee College of Medicine Chattanooga, Chattanooga, Tennessee 37403; Department of Medical Pharmacology and Physiology (G.E.D.), University of Missouri School of Medicine, Columbia, Missouri 65212; and Endocrinology Section (S.J.F.), Medical Service, Veterans Affairs Medical Center, Birmingham, Alabama 35233
| | - Larry A May
- Department of Medicine (Y.Z., J.J., S.J.F.), Division of Endocrinology, Diabetes, and Metabolism, and Department of Cell, Developmental, and Integrative Biology (S.J.F.), University of Alabama at Birmingham, Birmingham, Alabama 35294; The Institute of Cell Biology (X.W.), Shandong University School of Medicine, Jinan 250012, China; Department of Biochemistry and Biophysics (K.L.), Texas A&M University, College Station, Texas 77843; Department of Surgery (L.A.M.), University of Tennessee College of Medicine Chattanooga, Chattanooga, Tennessee 37403; Department of Medical Pharmacology and Physiology (G.E.D.), University of Missouri School of Medicine, Columbia, Missouri 65212; and Endocrinology Section (S.J.F.), Medical Service, Veterans Affairs Medical Center, Birmingham, Alabama 35233
| | - George E Davis
- Department of Medicine (Y.Z., J.J., S.J.F.), Division of Endocrinology, Diabetes, and Metabolism, and Department of Cell, Developmental, and Integrative Biology (S.J.F.), University of Alabama at Birmingham, Birmingham, Alabama 35294; The Institute of Cell Biology (X.W.), Shandong University School of Medicine, Jinan 250012, China; Department of Biochemistry and Biophysics (K.L.), Texas A&M University, College Station, Texas 77843; Department of Surgery (L.A.M.), University of Tennessee College of Medicine Chattanooga, Chattanooga, Tennessee 37403; Department of Medical Pharmacology and Physiology (G.E.D.), University of Missouri School of Medicine, Columbia, Missouri 65212; and Endocrinology Section (S.J.F.), Medical Service, Veterans Affairs Medical Center, Birmingham, Alabama 35233
| | - Jing Jiang
- Department of Medicine (Y.Z., J.J., S.J.F.), Division of Endocrinology, Diabetes, and Metabolism, and Department of Cell, Developmental, and Integrative Biology (S.J.F.), University of Alabama at Birmingham, Birmingham, Alabama 35294; The Institute of Cell Biology (X.W.), Shandong University School of Medicine, Jinan 250012, China; Department of Biochemistry and Biophysics (K.L.), Texas A&M University, College Station, Texas 77843; Department of Surgery (L.A.M.), University of Tennessee College of Medicine Chattanooga, Chattanooga, Tennessee 37403; Department of Medical Pharmacology and Physiology (G.E.D.), University of Missouri School of Medicine, Columbia, Missouri 65212; and Endocrinology Section (S.J.F.), Medical Service, Veterans Affairs Medical Center, Birmingham, Alabama 35233
| | - Stuart J Frank
- Department of Medicine (Y.Z., J.J., S.J.F.), Division of Endocrinology, Diabetes, and Metabolism, and Department of Cell, Developmental, and Integrative Biology (S.J.F.), University of Alabama at Birmingham, Birmingham, Alabama 35294; The Institute of Cell Biology (X.W.), Shandong University School of Medicine, Jinan 250012, China; Department of Biochemistry and Biophysics (K.L.), Texas A&M University, College Station, Texas 77843; Department of Surgery (L.A.M.), University of Tennessee College of Medicine Chattanooga, Chattanooga, Tennessee 37403; Department of Medical Pharmacology and Physiology (G.E.D.), University of Missouri School of Medicine, Columbia, Missouri 65212; and Endocrinology Section (S.J.F.), Medical Service, Veterans Affairs Medical Center, Birmingham, Alabama 35233
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69
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Goth CK, Halim A, Khetarpal SA, Rader DJ, Clausen H, Schjoldager KTBG. A systematic study of modulation of ADAM-mediated ectodomain shedding by site-specific O-glycosylation. Proc Natl Acad Sci U S A 2015; 112:14623-8. [PMID: 26554003 PMCID: PMC4664366 DOI: 10.1073/pnas.1511175112] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Regulated shedding of the ectodomain of cell membrane proteins by proteases is a common process that releases the extracellular domain from the cell and activates cell signaling. Ectodomain shedding occurs in the immediate extracellular juxtamembrane region, which is also where O-glycosylation is often found and examples of crosstalk between shedding and O-glycosylation have been reported. Here, we systematically investigated the potential of site-specific O-glycosylation mediated by distinct polypeptide GalNAc-transferase (GalNAc-T) isoforms to coregulate ectodomain shedding mediated by the A Disintegrin And Metalloproteinase (ADAM) subfamily of proteases and in particular ADAM17. We analyzed 25 membrane proteins that are known to undergo ADAM17 shedding and where the processing sites included Ser/Thr residues within ± 4 residues that could represent O-glycosites. We used in vitro GalNAc-T enzyme and ADAM cleavage assays to demonstrate that shedding of at least 12 of these proteins are potentially coregulated by O-glycosylation. Using TNF-α as an example, we confirmed that shedding mediated by ADAM17 is coregulated by O-glycosylation controlled by the GalNAc-T2 isoform both ex vivo in isogenic cell models and in vivo in mouse Galnt2 knockouts. The study provides compelling evidence for a wider role of site-specific O-glycosylation in ectodomain shedding.
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Affiliation(s)
- Christoffer K Goth
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen N, Denmark
| | - Adnan Halim
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen N, Denmark
| | - Sumeet A Khetarpal
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104; Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Daniel J Rader
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104; Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Henrik Clausen
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen N, Denmark
| | - Katrine T-B G Schjoldager
- Copenhagen Center for Glycomics, Department of Cellular and Molecular Medicine, Faculty of Health Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen N, Denmark;
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70
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Oh E, Lee HY, Kim HJ, Park YJ, Seo JK, Park JS, Bae YS. Serum amyloid A inhibits RANKL-induced osteoclast formation. Exp Mol Med 2015; 47:e194. [PMID: 26563612 PMCID: PMC4673470 DOI: 10.1038/emm.2015.83] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Revised: 07/13/2015] [Accepted: 08/05/2015] [Indexed: 02/07/2023] Open
Abstract
When mouse bone marrow-derived macrophages were stimulated with serum amyloid A (SAA), which is a major acute-phase protein, there was strong inhibition of osteoclast formation induced by the receptor activator of nuclear factor kappaB ligand. SAA not only markedly blocked the expression of several osteoclast-associated genes (TNF receptor-associated factor 6 and osteoclast-associated receptor) but also strongly induced the expression of negative regulators (MafB and interferon regulatory factor 8). Moreover, SAA decreased c-fms expression on the cell surface via shedding of the c-fms extracellular domain. SAA also restrained the fusion of osteoclast precursors by blocking intracellular ATP release. This inhibitory response of SAA is not mediated by the well-known SAA receptors (formyl peptide receptor 2, Toll-like receptor 2 (TLR2) or TLR4). These findings provide insight into a novel inhibitory role of SAA in osteoclastogenesis and suggest that SAA is an important endogenous modulator that regulates bone homeostasis.
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Affiliation(s)
- Eunseo Oh
- Department of Biological Sciences, Sungkyunkwan University, Suwon, Republic of Korea
| | - Ha Young Lee
- Department of Biological Sciences, Sungkyunkwan University, Suwon, Republic of Korea.,Mitochondria Hub Regulation Center, Dong-A University, Busan, Republic of Korea
| | - Hak Jung Kim
- Department of Biological Sciences, Sungkyunkwan University, Suwon, Republic of Korea
| | - Yoo Jung Park
- Department of Biological Sciences, Sungkyunkwan University, Suwon, Republic of Korea
| | - Jeong Kon Seo
- UNIST Central Research Facility, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea
| | - Joon Seong Park
- Department of Hematology and Oncology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Yoe-Sik Bae
- Department of Biological Sciences, Sungkyunkwan University, Suwon, Republic of Korea.,Mitochondria Hub Regulation Center, Dong-A University, Busan, Republic of Korea.,Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Seoul, Republic of Korea
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71
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Zhang P, Shen M, Fernandez-Patron C, Kassiri Z. ADAMs family and relatives in cardiovascular physiology and pathology. J Mol Cell Cardiol 2015; 93:186-99. [PMID: 26522853 DOI: 10.1016/j.yjmcc.2015.10.031] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 10/26/2015] [Accepted: 10/28/2015] [Indexed: 12/21/2022]
Abstract
A disintegrin and metalloproteinases (ADAMs) are a family of membrane-bound proteases. ADAM-TSs (ADAMs with thrombospondin domains) are a close relative of ADAMs that are present in soluble form in the extracellular space. Dysregulated production or function of these enzymes has been associated with pathologies such as cancer, asthma, Alzheimer's and cardiovascular diseases. ADAMs contribute to angiogenesis, hypertrophy and apoptosis in a stimulus- and cell type-dependent manner. Among the ADAMs identified so far (34 in mouse, 21 in human), ADAMs 8, 9, 10, 12, 17 and 19 have been shown to be involved in cardiovascular development or cardiomyopathies; and among the 19 ADAM-TSs, ADAM-TS1, 5, 7 and 9 are important in development of the cardiovascular system, while ADAM-TS13 can contribute to vascular disorders. Meanwhile, there remain a number of ADAMs and ADAM-TSs whose function in the cardiovascular system has not been yet explored. The current knowledge about the role of ADAMs and ADAM-TSs in the cardiovascular pathologies is still quite limited. The most detailed studies have been performed in other cell types (e.g. cancer cells) and organs (nervous system) which can provide valuable insight into the potential functions of ADAMs and ADAM-TSs, their mechanism of action and therapeutic potentials in cardiomyopathies. Here, we review what is currently known about the structure and function of ADAMs and ADAM-TSs, and their roles in development, physiology and pathology of the cardiovascular system.
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Affiliation(s)
- Pu Zhang
- Department of Physiology, University of Alberta, Edmonton, Alberta, Canada; Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
| | - Mengcheng Shen
- Department of Physiology, University of Alberta, Edmonton, Alberta, Canada; Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
| | - Carlos Fernandez-Patron
- Department of Biochemistry, University of Alberta, Edmonton, Alberta, Canada; Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada
| | - Zamaneh Kassiri
- Department of Physiology, University of Alberta, Edmonton, Alberta, Canada; Cardiovascular Research Centre, University of Alberta, Edmonton, Alberta, Canada.
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72
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de Queiroz TM, Xia H, Filipeanu CM, Braga VA, Lazartigues E. α-Lipoic acid reduces neurogenic hypertension by blunting oxidative stress-mediated increase in ADAM17. Am J Physiol Heart Circ Physiol 2015; 309:H926-34. [PMID: 26254330 PMCID: PMC4591409 DOI: 10.1152/ajpheart.00259.2015] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 07/30/2015] [Indexed: 02/07/2023]
Abstract
We previously reported that type 2 angiotensin-converting enzyme (ACE2) compensatory activity is impaired by the disintegrin and metalloprotease 17 (ADAM17), and lack of ACE2 is associated with oxidative stress in neurogenic hypertension. To investigate the relationship between ADAM17 and oxidative stress, Neuro2A cells were treated with ANG II (100 nM) 24 h after vehicle or α-lipoic acid (LA, 500 μM). ADAM17 expression was increased by ANG II (120.5 ± 9.1 vs. 100.2 ± 0.8%, P < 0.05) and decreased after LA (69.0 ± 0.3 vs. 120.5 ± 9.1%, P < 0.05). In another set of experiments, LA reduced ADAM17 (92.9 ± 5.3 vs. 100.0 ± 11.2%, P < 0.05) following its overexpression. Moreover, ADAM17 activity was reduced by LA in ADAM17-overexpressing cells [109.5 ± 19.8 vs. 158.0 ± 20.0 fluorescence units (FU)·min(-1)·μg protein(-1), P < 0.05], in which ADAM17 overexpression increased oxidative stress (114.1 ± 2.5 vs. 101.0 ± 1.0%, P < 0.05). Conversely, LA-treated cells attenuated ADAM17 overexpression-induced oxidative stress (76.0 ± 9.1 vs. 114.1 ± 2.5%, P < 0.05). In deoxycorticosterone acetate (DOCA)-salt hypertensive mice, a model in which ADAM17 expression and activity are increased, hypertension was blunted by pretreatment with LA (119.0 ± 2.4 vs. 131.4 ± 2.2 mmHg, P < 0.05). In addition, LA improved dysautonomia and baroreflex sensitivity. Furthermore, LA blunted the increase in NADPH oxidase subunit expression, as well as the increase in ADAM17 and decrease in ACE2 activity in the hypothalamus of DOCA-salt hypertensive mice. Taken together, these data suggest that LA might preserve ACE2 compensatory activity by breaking the feedforward cycle between ADAM17 and oxidative stress, resulting in a reduction of neurogenic hypertension.
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Affiliation(s)
- Thyago M de Queiroz
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana; Department of Biotechnology, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Huijing Xia
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana; Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana; and
| | - Catalin M Filipeanu
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana; Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana; and
| | - Valdir A Braga
- Department of Biotechnology, Federal University of Paraíba, João Pessoa, PB, Brazil
| | - Eric Lazartigues
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, Louisiana; Neurosciences Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana; Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, Louisiana; and
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73
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DeBerge MP, Ely KH, Wright PF, Thorp EB, Enelow RI. Shedding of TNF receptor 2 by effector CD8⁺ T cells by ADAM17 is important for regulating TNF-α availability during influenza infection. J Leukoc Biol 2015; 98:423-34. [PMID: 26019295 PMCID: PMC4763598 DOI: 10.1189/jlb.3a0914-432rr] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 05/04/2015] [Accepted: 05/08/2015] [Indexed: 11/24/2022] Open
Abstract
Elevated levels of solTNFR2 are observed in a variety of human pathophysiological conditions but regulation of TNFR2 levels during disease is not well understood. We found that solTNFR2 levels were increased following influenza infection or live-attenuated influenza virus challenge in mice and humans, respectively. As influenza-specific CD8(+) T cells up-regulated expression of TNFR2 after infection in mice, we hypothesized that CD8(+) T cells contributed, in part, to solTNFR2 production after influenza infection and were interested in the mechanisms by which CD8(+) T cells regulate TNFR2 shedding. Activation of these cells by TCR stimulation resulted in enhanced shedding of TNFR2 that required actin remodeling and lipid raft formation and was dependent on MAPK/ERK signaling. Furthermore, we identified ADAM17 as the protease responsible for TNFR2 shedding by CD8(+) T cells, with ADAM17 and TNFR2 required in "cis" for shedding to occur. We observed similar activation thresholds for TNF-α expression and TNFR2 shedding, suggesting that solTNFR2 functioned, in part, to regulate solTNF-α levels. Production of solTNFR2 by activated CD8(+) T cells reduced the availability of solTNF-α released by these cells, and TNFR2 blockade during influenza infection in mice enhanced the levels of solTNF-α, supporting this hypothesis. Taken together, this study identifies critical cellular mechanisms regulating TNFR2 shedding on CD8(+) T cells and demonstrates that TNFR2 contributes, in part, to the regulation of TNF-α levels during infection.
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Affiliation(s)
- Matthew P DeBerge
- *Department of Pathology, Feinberg School of Medicine at Northwestern University, Chicago, Illinois, USA; Departments of Medicine, Pediatrics, and Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire, USA
| | - Kenneth H Ely
- *Department of Pathology, Feinberg School of Medicine at Northwestern University, Chicago, Illinois, USA; Departments of Medicine, Pediatrics, and Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire, USA
| | - Peter F Wright
- *Department of Pathology, Feinberg School of Medicine at Northwestern University, Chicago, Illinois, USA; Departments of Medicine, Pediatrics, and Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire, USA
| | - Edward B Thorp
- *Department of Pathology, Feinberg School of Medicine at Northwestern University, Chicago, Illinois, USA; Departments of Medicine, Pediatrics, and Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire, USA
| | - Richard I Enelow
- *Department of Pathology, Feinberg School of Medicine at Northwestern University, Chicago, Illinois, USA; Departments of Medicine, Pediatrics, and Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire, USA
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74
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Qian M, Shen X, Wang H. The Distinct Role of ADAM17 in APP Proteolysis and Microglial Activation Related to Alzheimer's Disease. Cell Mol Neurobiol 2015; 36:471-82. [PMID: 26119306 DOI: 10.1007/s10571-015-0232-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 06/23/2015] [Indexed: 01/03/2023]
Abstract
Alzheimer's disease (AD) is a progressive neurodegenerative disease with the symptom of cognitive impairment. The deposition of amyloid β (Aβ) peptide is believed to be the primary cause to neuronal dystrophy and eventually dementia. Aβ is the proteolytic product from its precursor amyloid precursor protein (APP) by β- and γ- secretase. An optional cleavage by α-secretase happens inside the Aβ domain. ADAM17 is supposed to be the regulated α-secretase of APP. Enhanced activity of ADAM17 leads to the increasing secretion of neuroprotective soluble APP α fragment and reduction of Aβ generation, which may be benefit to the disease. ADAM17 is then considered the potential therapeutic target for AD. Microglia activation and neuroinflammation is another important event in AD pathogenesis. Interestingly, ADAM17 also participates in the cleavage of many other membrane-bound proteins, especially some inflammatory factors related to microglia activation. The facilitating role of ADAM17 in inflammation and further neuronal damage has also been illustrated. In results, the activation of ADAM17 as the solution to AD may be a tricky task. The comprehensive consideration and evaluation has to be carried out carefully before the final treatment. In the present review, the distinct role of ADAM17 in AD-related APP shedding and neuroinflammatory microglial activation will be carefully discussed.
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Affiliation(s)
- Meng Qian
- Key Lab of Inflammation and Immunoregulation, School of Medicine, Hangzhou Normal University, Xuelin Street 16, Hangzhou, 310036, China
| | - Xiaoqiang Shen
- Key Lab of Inflammation and Immunoregulation, School of Medicine, Hangzhou Normal University, Xuelin Street 16, Hangzhou, 310036, China
| | - Huanhuan Wang
- Key Lab of Inflammation and Immunoregulation, School of Medicine, Hangzhou Normal University, Xuelin Street 16, Hangzhou, 310036, China.
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75
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Dombernowsky SL, Samsøe-Petersen J, Petersen CH, Instrell R, Hedegaard AMB, Thomas L, Atkins KM, Auclair S, Albrechtsen R, Mygind KJ, Fröhlich C, Howell M, Parker P, Thomas G, Kveiborg M. The sorting protein PACS-2 promotes ErbB signalling by regulating recycling of the metalloproteinase ADAM17. Nat Commun 2015; 6:7518. [PMID: 26108729 PMCID: PMC4481878 DOI: 10.1038/ncomms8518] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2014] [Accepted: 05/16/2015] [Indexed: 01/07/2023] Open
Abstract
The metalloproteinase ADAM17 activates ErbB signalling by releasing ligands from the cell surface, a key step underlying epithelial development, growth and tumour progression. However, mechanisms acutely controlling ADAM17 cell-surface availability to modulate the extent of ErbB ligand release are poorly understood. Here, through a functional genome-wide siRNA screen, we identify the sorting protein PACS-2 as a regulator of ADAM17 trafficking and ErbB signalling. PACS-2 loss reduces ADAM17 cell-surface levels and ADAM17-dependent ErbB ligand shedding, without apparent effects on related proteases. PACS-2 co-localizes with ADAM17 on early endosomes and PACS-2 knockdown decreases the recycling and stability of internalized ADAM17. Hence, PACS-2 sustains ADAM17 cell-surface activity by diverting ADAM17 away from degradative pathways. Interestingly, Pacs2-deficient mice display significantly reduced levels of phosphorylated EGFR and intestinal proliferation. We suggest that this mechanism controlling ADAM17 cell-surface availability and EGFR signalling may play a role in intestinal homeostasis, with potential implications for cancer biology.
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Affiliation(s)
- Sarah Louise Dombernowsky
- Department of Biomedical Sciences & Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen N, Denmark
| | - Jacob Samsøe-Petersen
- Department of Biomedical Sciences & Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen N, Denmark
| | - Camilla Hansson Petersen
- Department of Biomedical Sciences & Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen N, Denmark
| | - Rachael Instrell
- High Throughput Screening Laboratory, Cancer Research UK, London Research Institute, 44 Lincoln’s Inn Fields, London WC2A 3LY, UK
| | - Anne-Mette Bornhardt Hedegaard
- Department of Biomedical Sciences & Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen N, Denmark
| | - Laurel Thomas
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, 507 Bridgeside Point II, 450 Technolohy Drive, Pittsburgh, PA 15219, USA
| | - Katelyn Mae Atkins
- Department of Cell and Developmental Biology, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA
| | - Sylvain Auclair
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, 507 Bridgeside Point II, 450 Technolohy Drive, Pittsburgh, PA 15219, USA
| | - Reidar Albrechtsen
- Department of Biomedical Sciences & Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen N, Denmark
| | - Kasper Johansen Mygind
- Department of Biomedical Sciences & Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen N, Denmark
| | - Camilla Fröhlich
- Department of Biomedical Sciences & Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen N, Denmark
| | - Michael Howell
- High Throughput Screening Laboratory, Cancer Research UK, London Research Institute, 44 Lincoln’s Inn Fields, London WC2A 3LY, UK
| | - Peter Parker
- Protein Phosphorylation Laboratory, Cancer Research UK, London Research Institute, 44 Lincoln’s Inn Fields, London WC2A 3LY, UK
- Division of Cancer Studies, King’s College London, New Hunts House, Guy’s Campus, London SE1 1UL, UK
| | - Gary Thomas
- Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, 507 Bridgeside Point II, 450 Technolohy Drive, Pittsburgh, PA 15219, USA
- Department of Cell and Developmental Biology, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA
| | - Marie Kveiborg
- Department of Biomedical Sciences & Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen N, Denmark
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76
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Secreted Frizzled-related protein 3 (sFRP3)-mediated suppression of interleukin-6 receptor release by A disintegrin and metalloprotease 17 (ADAM17) is abrogated in the osteoarthritis-associated rare double variant of sFRP3. Biochem J 2015; 468:507-18. [DOI: 10.1042/bj20141231] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 04/07/2015] [Indexed: 11/17/2022]
Abstract
A disintegrin and metalloprotease 17 (ADAM17) activity and secreted Frizzled-related protein 3 (sFRP3) down-regulation or expression of its rare double variant is associated with arthritis. sFRP3 interacts with interleukin-6 receptor (IL-6R) and ADAM17 and suppresses ADAM17 activity, whereas the rare variant does not; these findings provide explanation for their opposing pathogenic associations.
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77
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Wu L, Claas AM, Sarkar A, Lauffenburger DA, Han J. High-throughput protease activity cytometry reveals dose-dependent heterogeneity in PMA-mediated ADAM17 activation. Integr Biol (Camb) 2015; 7:513-24. [PMID: 25832727 PMCID: PMC4428935 DOI: 10.1039/c5ib00019j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
As key components of autocrine signaling, pericellular proteases, a disintegrin and metalloproteinases (ADAMs) in particular, are known to impact the microenvironment of individual cells and have significant implications in various pathological situations including cancer, inflammatory and vascular diseases. There is great incentive to develop a high-throughput platform for single-cell measurement of pericellular protease activity, as it is essential for studying the heterogeneity of protease response and the corresponding cell behavioral consequences. In this work, we developed a microfluidic platform to simultaneously monitor protease activity of many single cells in a time-dependent manner. This platform isolates individual microwells rapidly on demand and thus allows single-cell activity measurement of both cell-surface and secreted proteases by confining individual cells with diffusive FRET-based substrates. With this platform, we observed dose-dependent heterogeneous protease activation of HepG2 cells treated with phorbol 12-myristate 13-acetate (PMA). To study the temporal behavior of PMA-induced protease response, we monitored the pericellular protease activity of the same single cells during three different time periods and revealed the diversity in the dynamic patterns of single-cell protease activity profile upon PMA stimulation. The unique temporal information of single-cell protease response can help unveil the complicated functional role of pericellular proteases.
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Affiliation(s)
- Lidan Wu
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
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78
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Chapnick DA, Bunker E, Liu X. A biosensor for the activity of the "sheddase" TACE (ADAM17) reveals novel and cell type-specific mechanisms of TACE activation. Sci Signal 2015; 8:rs1. [PMID: 25714465 DOI: 10.1126/scisignal.2005680] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Diverse environmental conditions stimulate protein "shedding" from the cell surface through proteolytic cleavage. The protease TACE [tumor necrosis factor-α (TNFα)--converting enzyme, encoded by ADAM17] mediates protein shedding, thereby regulating the maturation and release of various extracellular substrates, such as growth factors and cytokines, that induce diverse cellular responses. We developed a FRET (fluorescence resonance energy transfer)-based biosensor called TSen that quantitatively reports the kinetics of TACE activity in live cells. In combination with chemical biology approaches, we used TSen to probe the dependence of TACE activation on the induction of the kinases p38 and ERK (extracellular signal-regulated kinase) in various epithelial cell lines. Using TSen, we found that disruption of the actin cytoskeleton in keratinocytes induced rapid and robust TSen cleavage and the accumulation of TACE at the plasma membrane. Cytoskeletal disruption also increased the cleavage of endogenous TACE substrates, including transforming growth factor-α. Thus, TSen is a useful tool for unraveling the mechanisms underlying the spatiotemporal activation of TACE in live cells.
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Affiliation(s)
- Douglas A Chapnick
- Department of Chemistry and Biochemistry, 596 UCB, University of Colorado, Jennie Smoly Caruthers Biotechnology Building (JSCBB), 3415 Colorado Avenue, Boulder, CO 80303, USA
| | - Eric Bunker
- Department of Chemistry and Biochemistry, 596 UCB, University of Colorado, Jennie Smoly Caruthers Biotechnology Building (JSCBB), 3415 Colorado Avenue, Boulder, CO 80303, USA
| | - Xuedong Liu
- Department of Chemistry and Biochemistry, 596 UCB, University of Colorado, Jennie Smoly Caruthers Biotechnology Building (JSCBB), 3415 Colorado Avenue, Boulder, CO 80303, USA.
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79
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Niu A, Wang B, Li YP. TNFα Shedding in Mechanically Stressed Cardiomyocytes is Mediated by Src Activation of TACE. J Cell Biochem 2015; 116:559-65. [DOI: 10.1002/jcb.25006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 10/27/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Airu Niu
- Department of Integrative Biology and Pharmacology; University of Texas Health Science Center; Houston Texas 77030
| | - Bin Wang
- Department of Integrative Biology and Pharmacology; University of Texas Health Science Center; Houston Texas 77030
| | - Yi-Ping Li
- Department of Integrative Biology and Pharmacology; University of Texas Health Science Center; Houston Texas 77030
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80
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Quach HT, Hirano S, Fukuhara S, Watanabe T, Kanoh N, Iwabuchi Y, Usui T, Kataoka T. Irciniastatin A Induces Potent and Sustained Activation of Extracellular Signal-Regulated Kinase and Thereby Promotes Ectodomain Shedding of Tumor Necrosis Factor Receptor 1 in Human Lung Carcinoma A549 Cells. Biol Pharm Bull 2015; 38:941-6. [DOI: 10.1248/bpb.b15-00078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hue Tu Quach
- Department of Applied Biology, Kyoto Institute of Technology
| | - Seiya Hirano
- Department of Applied Biology, Kyoto Institute of Technology
| | - Sayuri Fukuhara
- Department of Applied Biology, Kyoto Institute of Technology
| | - Tsubasa Watanabe
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University
| | - Naoki Kanoh
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University
| | - Yoshiharu Iwabuchi
- Department of Organic Chemistry, Graduate School of Pharmaceutical Sciences, Tohoku University
| | - Takeo Usui
- Faculty of Life and Environmental Sciences, University of Tsukuba
| | - Takao Kataoka
- Department of Applied Biology, Kyoto Institute of Technology
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81
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Abbruzzese G, Cousin H, Salicioni AM, Alfandari D. GSK3 and Polo-like kinase regulate ADAM13 function during cranial neural crest cell migration. Mol Biol Cell 2014; 25:4072-82. [PMID: 25298404 PMCID: PMC4263450 DOI: 10.1091/mbc.e14-05-0970] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 09/25/2014] [Accepted: 09/26/2014] [Indexed: 12/28/2022] Open
Abstract
ADAMs are cell surface metalloproteases that control multiple biological processes by cleaving signaling and adhesion molecules. ADAM13 controls cranial neural crest (CNC) cell migration both by cleaving cadherin-11 to release a promigratory extracellular fragment and by controlling expression of multiple genes via its cytoplasmic domain. The latter activity is regulated by γ-secretase cleavage and the translocation of the cytoplasmic domain into the nucleus. One of the genes regulated by ADAM13, the protease calpain8, is essential for CNC migration. Although the nuclear function of ADAM13 is evolutionarily conserved, it is unclear whether the transcriptional regulation is also performed by other ADAMs and how this process may be regulated. We show that ADAM13 function to promote CNC migration is regulated by two phosphorylation events involving GSK3 and Polo-like kinase (Plk). We further show that inhibition of either kinase blocks CNC migration and that the respective phosphomimetic forms of ADAM13 can rescue these inhibitions. However, these phosphorylations are not required for ADAM13 proteolysis of its substrates, γ-secretase cleavage, or nuclear translocation of its cytoplasmic domain. Of significance, migration of the CNC can be restored in the absence of Plk phosphorylation by expression of calpain-8a, pointing to impaired nuclear activity of ADAM13.
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Affiliation(s)
- Genevieve Abbruzzese
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003
| | - Hélène Cousin
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003
| | - Ana Maria Salicioni
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003
| | - Dominique Alfandari
- Department of Veterinary and Animal Sciences, University of Massachusetts, Amherst, MA 01003
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82
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McClurg UL, Danjo K, King HO, Scott GB, Robinson PA, Crabtree JE. Epithelial cell ADAM17 activation by Helicobacter pylori: role of ADAM17 C-terminus and Threonine-735 phosphorylation. Microbes Infect 2014; 17:205-14. [PMID: 25499189 DOI: 10.1016/j.micinf.2014.11.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 11/06/2014] [Accepted: 11/29/2014] [Indexed: 12/26/2022]
Abstract
Helicobacter pylori transactivates the epidermal growth factor receptor (EGFR) on gastric epithelial cells via a signalling cascade involving a disintegrin and metalloprotease 17 (ADAM17) cleavage of membrane bound heparin binding-epidermal growth factor (HB-EGF). The effects of H. pylori on ADAM17 C-terminus in epithelial cells have been examined. Total cellular ADAM17 and surface expression of ADAM17 were significantly increased by H. pylori in AGS gastric epithelial cells. These changes were associated with ADAM17 C-terminal phosphorylation at T375 and S791. AGS cells lacking the ADAM17 C-terminal domain induced significantly attenuated cleavage of HB-EGF and were also unable to upregulate HB-EGF and EGFR transcripts to the same extent as cells expressing full length ADAM17. In mitotic unstimulated AGS and ADAM17 over-expressing AGS cells, ADAM17 was highly T735 phosphorylated indicating ADAM17 T735 phosphorylation is modified during the cell cycle. In conclusion, H. pylori induced ADAM17 C-terminal T735 and/or S791 phosphorylation in gastric epithelial cells are likely to be an important trigger inducing ADAM17 activation and shedding of HB-EGF leading to EGFR transactivation. ADAM17 over-expression in gastric cancer represents a potential target for therapeutic intervention.
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Affiliation(s)
- Urszula L McClurg
- Leeds Institute, Biomedical and Clinical Sciences, St. James's University Hospital, University of Leeds, Leeds LS9 7TF, UK
| | - Kazuma Danjo
- Leeds Institute, Biomedical and Clinical Sciences, St. James's University Hospital, University of Leeds, Leeds LS9 7TF, UK
| | - Harry O King
- Leeds Institute, Biomedical and Clinical Sciences, St. James's University Hospital, University of Leeds, Leeds LS9 7TF, UK
| | - Gina B Scott
- Leeds Institute, Biomedical and Clinical Sciences, St. James's University Hospital, University of Leeds, Leeds LS9 7TF, UK
| | - Philip A Robinson
- Leeds Institute, Biomedical and Clinical Sciences, St. James's University Hospital, University of Leeds, Leeds LS9 7TF, UK
| | - Jean E Crabtree
- Leeds Institute, Biomedical and Clinical Sciences, St. James's University Hospital, University of Leeds, Leeds LS9 7TF, UK.
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83
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A mechanism of male germ cell apoptosis induced by bisphenol-A and nonylphenol involving ADAM17 and p38 MAPK activation. PLoS One 2014; 9:e113793. [PMID: 25474107 PMCID: PMC4256297 DOI: 10.1371/journal.pone.0113793] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2014] [Accepted: 10/30/2014] [Indexed: 01/08/2023] Open
Abstract
Germ cell apoptosis regulation is pivotal in order to maintain proper daily sperm production. Several reports have shown that endocrine disruptors such as Bisphenol-A (BPA) and Nonylphenol (NP) induce germ cell apoptosis along with a decrease in sperm production. Given their ubiquitous distribution in plastic products used by humans it is important to clarify their mechanism of action. TACE/ADAM17 is a widely distributed extracellular metalloprotease and participates in the physiological apoptosis of germ cells during spermatogenesis. The aims of this work were: 1) to determine whether BPA and NP induce ADAM17 activation; and 2) to study whether ADAM17 and/or ADAM10 are involved in germ cell apoptosis induced by BPA and NP in the pubertal rat testis. A single dose of BPA or NP (50 mg/kg) induces germ cell apoptosis in 21-day-old male rats, which was prevented by a pharmacological inhibitor of ADAM17, but not by an inhibitor of ADAM10. In vitro, we showed that BPA and NP, at similar concentrations to those found in human samples, induce the shedding of exogenous and endogenous (TNF-α) ADAM17 substrates in primary rat Sertoli cell cultures and TM4 cell line. In addition, pharmacological inhibitors of metalloproteases and genetic silencing of ADAM17 prevent the shedding induced in vitro by BPA and NP. Finally, we showed that in vivo BPA and NP induced early activation (phosphorylation) of p38 MAPK and translocation of ADAM17 to the cell surface. Interestingly, the inhibition of p38 MAPK prevents germ cell apoptosis and translocation of ADAM17 to the cell surface. These results show for the first time that xenoestrogens can induce activation of ADAM17 at concentrations similar to those found in human samples, suggesting a mechanism by which they could imbalance para/juxtacrine cell-to-cell-communication and induce germ cell apoptosis.
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84
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Caldwell AB, Cheng Z, Vargas JD, Birnbaum HA, Hoffmann A. Network dynamics determine the autocrine and paracrine signaling functions of TNF. Genes Dev 2014; 28:2120-33. [PMID: 25274725 PMCID: PMC4180974 DOI: 10.1101/gad.244749.114] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A hallmark of the inflammatory response to pathogen exposure is the production of tumor necrosis factor (TNF) that coordinates innate and adaptive immune responses by functioning in an autocrine or paracrine manner. Numerous molecular mechanisms contributing to TNF production have been identified, but how they function together in macrophages remains unclear. Here, we pursued an iterative systems biology approach to develop a quantitative understanding of the regulatory modules that control TNF mRNA synthesis and processing, mRNA half-life and translation, and protein processing and secretion. By linking the resulting model of TNF production to models of the TLR-, the TNFR-, and the NFκB signaling modules, we were able to study TNF's functions during the inflammatory response to diverse TLR agonists. Contrary to expectation, we predicted and then experimentally confirmed that in response to lipopolysaccaride, TNF does not have an autocrine function in amplifying the NFκB response, although it plays a potent paracrine role in neighboring cells. However, in response to CpG DNA, autocrine TNF extends the duration of NFκB activity and shapes CpG-induced gene expression programs. Our systems biology approach revealed that network dynamics of MyD88 and TRIF signaling and of cytokine production and response govern the stimulus-specific autocrine and paracrine functions of TNF.
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Affiliation(s)
- Andrew B Caldwell
- Signaling Systems Laboratory, Department of Chemistry and Biochemistry, and San Diego Center for Systems Biology, University of California at San Diego, La Jolla, California 92093, USA
| | - Zhang Cheng
- Signaling Systems Laboratory, Department of Chemistry and Biochemistry, and San Diego Center for Systems Biology, University of California at San Diego, La Jolla, California 92093, USA; Institute for Quantitative and Computational Biosciences, Department of Microbiology, Immunology, and Molecular Genetics, University of California at Los Angeles, Los Angeles, California 90025, USA
| | - Jesse D Vargas
- Signaling Systems Laboratory, Department of Chemistry and Biochemistry, and San Diego Center for Systems Biology, University of California at San Diego, La Jolla, California 92093, USA; Institute for Quantitative and Computational Biosciences, Department of Microbiology, Immunology, and Molecular Genetics, University of California at Los Angeles, Los Angeles, California 90025, USA
| | - Harry A Birnbaum
- Signaling Systems Laboratory, Department of Chemistry and Biochemistry, and San Diego Center for Systems Biology, University of California at San Diego, La Jolla, California 92093, USA; Institute for Quantitative and Computational Biosciences, Department of Microbiology, Immunology, and Molecular Genetics, University of California at Los Angeles, Los Angeles, California 90025, USA
| | - Alexander Hoffmann
- Signaling Systems Laboratory, Department of Chemistry and Biochemistry, and San Diego Center for Systems Biology, University of California at San Diego, La Jolla, California 92093, USA; Institute for Quantitative and Computational Biosciences, Department of Microbiology, Immunology, and Molecular Genetics, University of California at Los Angeles, Los Angeles, California 90025, USA
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85
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Larios JA, Jausoro I, Benitez ML, Bronfman FC, Marzolo MP. Neurotrophins regulate ApoER2 proteolysis through activation of the Trk signaling pathway. BMC Neurosci 2014; 15:108. [PMID: 25233900 PMCID: PMC4177048 DOI: 10.1186/1471-2202-15-108] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2014] [Accepted: 09/15/2014] [Indexed: 12/27/2022] Open
Abstract
Background ApoER2 and the neurotrophin receptors Trk and p75NTR are expressed in the CNS and regulate key functional aspects of neurons, including development, survival, and neuronal function. It is known that both ApoER2 and p75NTR are processed by metalloproteinases, followed by regulated intramembrane proteolysis. TrkA activation by nerve growth factor (NGF) increases the proteolytic processing of p75NTR mediated by ADAM17. Reelin induces the sheeding of ApoER2 ectodomain depending on metalloproteinase activity. However, it is not known if there is a common regulation mechanism for processing these receptors. Results We found that TrkA activation by NGF in PC12 cells induced ApoER2 processing, which was dependent on TrkA activation and metalloproteinases. NGF-induced ApoER2 proteolysis was independent of mitogen activated protein kinase activity and of phosphatidylinositol-3 kinase activity. In contrast, the basal proteolysis of ApoER2 increased when both kinases were pharmacologically inhibited. The ApoER2 ligand reelin regulated the proteolytic processing of its own receptor but not of p75NTR. Finally, in primary cortical neurons, which express both ApoER2 and TrkB, we found that the proteolysis of ApoER2 was also regulated by brain-derived growth factor (BDNF). Conclusions Our results highlight a novel relationship between neurotrophins and the reelin-ApoER2 system, suggesting that these two pathways might be linked to regulate brain development, neuronal survival, and some pathological conditions.
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Affiliation(s)
| | | | | | | | - Maria-Paz Marzolo
- Departamento de Biología Celular y Molecular, Laboratorio de Tráfico Intracelular y Señalización, Facultad de Ciencias Biológicas, Pontificia Universidad Católica, Alameda 340, Santiago 8320000, Chile.
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86
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Prakasam HS, Gallo LI, Li H, Ruiz WG, Hallows KR, Apodaca G. A1 adenosine receptor-stimulated exocytosis in bladder umbrella cells requires phosphorylation of ADAM17 Ser-811 and EGF receptor transactivation. Mol Biol Cell 2014; 25:3798-812. [PMID: 25232008 PMCID: PMC4230785 DOI: 10.1091/mbc.e14-03-0818] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The role of phosphorylation in ADAM17-dependent shedding is controversial. We show that the A1 adenosine receptor stimulates exocytosis in umbrella cells by a pathway that requires phosphorylation of ADAM17–Ser-811, followed by HB-EGF shedding and EGF receptor transactivation. Preventing ADAM17 phosphorylation blocks these downstream events. Despite the importance of ADAM17-dependent cleavage in normal biology and disease, the physiological cues that trigger its activity, the effector pathways that promote its function, and the mechanisms that control its activity, particularly the role of phosphorylation, remain unresolved. Using native bladder epithelium, in some cases transduced with adenoviruses encoding small interfering RNA, we observe that stimulation of apically localized A1 adenosine receptors (A1ARs) triggers a Gi-Gβγ-phospholipase C-protein kinase C (PKC) cascade that promotes ADAM17-dependent HB-EGF cleavage, EGFR transactivation, and apical exocytosis. We further show that the cytoplasmic tail of rat ADAM17 contains a conserved serine residue at position 811, which resides in a canonical PKC phosphorylation site, and is phosphorylated in response to A1AR activation. Preventing this phosphorylation event by expression of a nonphosphorylatable ADAM17S811A mutant or expression of a tail-minus construct inhibits A1AR-stimulated, ADAM17-dependent HB-EGF cleavage. Furthermore, expression of ADAM17S811A in bladder tissues impairs A1AR-induced apical exocytosis. We conclude that adenosine-stimulated exocytosis requires PKC- and ADAM17-dependent EGFR transactivation and that the function of ADAM17 in this pathway depends on the phosphorylation state of Ser-811 in its cytoplasmic domain.
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Affiliation(s)
- H Sandeep Prakasam
- Departments of Medicine and Cell Biology, University of Pittsburgh, Pittsburgh, PA 15261
| | - Luciana I Gallo
- Departments of Medicine and Cell Biology, University of Pittsburgh, Pittsburgh, PA 15261
| | - Hui Li
- Departments of Medicine and Cell Biology, University of Pittsburgh, Pittsburgh, PA 15261
| | - Wily G Ruiz
- Departments of Medicine and Cell Biology, University of Pittsburgh, Pittsburgh, PA 15261
| | - Kenneth R Hallows
- Departments of Medicine and Cell Biology, University of Pittsburgh, Pittsburgh, PA 15261
| | - Gerard Apodaca
- Departments of Medicine and Cell Biology, University of Pittsburgh, Pittsburgh, PA 15261
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87
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Effenberger T, Heyde J, Bartsch K, Garbers C, Schulze‐Osthoff K, Chalaris A, Murphy G, Rose‐John S, Rabe B. Senescence‐associated release of transmembrane proteins involves proteolytic processing by ADAM17 and microvesicle shedding. FASEB J 2014; 28:4847-56. [DOI: 10.1096/fj.14-254565] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Timo Effenberger
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
| | - Jan Heyde
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
| | - Kareen Bartsch
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
| | - Christoph Garbers
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
| | - Klaus Schulze‐Osthoff
- Interfaculty Institute for BiochemistryEberhard Karls UniversityTübingenGermany
- German Cancer Consortium (DKTK)HeidelbergGermany
- German Cancer Research CenterHeidelbergGermany
| | - Athena Chalaris
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
| | - Gillian Murphy
- Department of OncologyCancer Research UK Cambridge InstituteUniversity of CambridgeCambridgeUK
| | - Stefan Rose‐John
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
| | - Björn Rabe
- Institute of BiochemistryChristian‐Albrechts‐University KielKielGermany
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88
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Chen YJ, Lin HC, Chen KC, Lin SR, Cheng TL, Chang LS. Taiwan cobra phospholipase A2 suppresses ERK-mediated ADAM17 maturation, thus reducing secreted TNF-α production in human leukemia U937 cells. Toxicon 2014; 86:79-88. [PMID: 24874889 DOI: 10.1016/j.toxicon.2014.05.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 04/09/2014] [Accepted: 05/12/2014] [Indexed: 11/17/2022]
Abstract
The goal of this study was to explore the signaling pathway regulating the processing of proADAM17 into ADAM17 in Taiwan cobra phospholipase A2 (PLA2)-treated human leukemia U937 cells. PLA2 induced reactive oxygen species (ROS)-elicited p38 MAPK activation and ERK inactivation in U937 cells. Catalytically inactive bromophenacylated PLA2 (BPB-PLA2) and PLA2 mutants evoked Ca(2+)-mediated p38 MAPK activation, and the level of phosphorylated ERK remained unchanged. PLA2 treatment reduced mature ADAM17 expression and secreted TNF-α (sTNF-α) production. Co-treatment of SB202190 (p38 MAPK inhibitor) and catalytically inactive PLA2 increased ERK phosphorylation, ADAM17 maturation and sTNF-α production. Nevertheless, mRNA levels of ADAM17 and TNF-α were insignificantly altered after PLA2 and SB202190/BPB-PLA2 treatment. ADAM17 activity assay and knock-down of ADAM17 revealed that ADAM17 was involved in sTNF-α production. Restoration of ERK activation increased the processing of proADAM17 into ADAM17 in PLA2-treated cells, while inactivation of ERK reduced ADAM17 maturation in untreated and SB202190/BPB-PLA2-treated cells. Removal of cell surface heparan sulfate abrogated PLA2 and SB202190/BPB-PLA2 effect on ADAM17 maturation. Taken together, the present data reveal that PLA2 suppresses ERK-mediated ADAM17 maturation, thus reducing sTNF-α production in U937 cells. Moreover, the binding with heparan sulfate is crucial for the PLA2 effect.
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Affiliation(s)
- Ying-Jung Chen
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Hui-Chen Lin
- Department of Nutrition Room, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 813, Taiwan
| | - Ku-Chung Chen
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Shinne-Ren Lin
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Tian-Lu Cheng
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Long-Sen Chang
- Institute of Biomedical Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
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89
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Puimège L, Libert C, Van Hauwermeiren F. Regulation and dysregulation of tumor necrosis factor receptor-1. Cytokine Growth Factor Rev 2014; 25:285-300. [PMID: 24746195 DOI: 10.1016/j.cytogfr.2014.03.004] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 03/10/2014] [Indexed: 01/18/2023]
Abstract
TNF is an essential regulator of the immune system. Dysregulation of TNF plays a role in the pathology of many auto-immune diseases. TNF-blocking agents have proven successful in the treatment of such diseases. Development of novel, safer or more effective drugs requires a deeper understanding of the regulation of the pro-inflammatory activities of TNF and its receptors. The ubiquitously expressed TNFR1 is responsible for most TNF effects, while TNFR2 has a limited expression pattern and performs immune-regulatory functions. Despite extensive knowledge of TNFR1 signaling, the regulation of TNFR1 expression, its modifications, localization and processing are less clear and the data are scattered. Here we review the current knowledge of TNFR1 regulation and discuss the impact this has on the host.
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Affiliation(s)
- Leen Puimège
- Inflammation Research Center, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Claude Libert
- Inflammation Research Center, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium
| | - Filip Van Hauwermeiren
- Inflammation Research Center, VIB, Ghent, Belgium; Department of Biomedical Molecular Biology, Ghent University, Ghent, Belgium.
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90
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Ceppo F, Berthou F, Jager J, Dumas K, Cormont M, Tanti JF. Implication of the Tpl2 kinase in inflammatory changes and insulin resistance induced by the interaction between adipocytes and macrophages. Endocrinology 2014; 155:951-64. [PMID: 24424060 DOI: 10.1210/en.2013-1815] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Adipose tissue inflammation is associated with the development of insulin resistance. In obese adipose tissue, lipopolysaccharides (LPSs) and saturated fatty acids trigger inflammatory factors that mediate a paracrine loop between adipocytes and macrophages. However, the inflammatory signaling proteins underlying this cross talk remain to be identified. The mitogen-activated protein kinase kinase kinase tumor progression locus 2 (Tpl2) is activated by inflammatory stimuli, including LPS, and its expression is up-regulated in obese adipose tissue, but its role in the interaction between adipocytes and macrophages remains ill-defined. To assess the implication of Tpl2 in the cross talk between these 2 cell types, we used coculture system and conditioned medium (CM) from macrophages. Pharmacological inhibition of Tpl2 in the coculture markedly reduced lipolysis and cytokine production and prevented the decrease in adipocyte insulin signaling. Tpl2 knockdown in cocultured adipocytes reduced lipolysis but had a weak effect on cytokine production and did not prevent the alteration of insulin signaling. By contrast, Tpl2 silencing in cocultured macrophages resulted in a marked inhibition of cytokine production and prevented the alteration of adipocyte insulin signaling. Further, when Tpl2 was inhibited in LPS-activated macrophages, the produced CM did not alter adipocyte insulin signaling and did not induce an inflammatory response in adipocytes. By contrast, Tpl2 silencing in adipocytes did not prevent the deleterious effects of a CM from LPS-activated macrophages. Together, these data establish that Tpl2, mainly in macrophages, is involved in the cross talk between adipocytes and macrophages that promotes inflammatory changes and alteration of insulin signaling in adipocytes.
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Affiliation(s)
- Franck Ceppo
- INSERM Unité 1065/Centre Méditerranéen de Médecine Moléculaire (C3M) and Université de Nice Sophia Antipolis (F.C., F.B., J.J., K.D, M.C., J.-F.T.), F-06204, Nice, France
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91
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Hansen AG, Arnold SA, Jiang M, Palmer TD, Ketova T, Merkel A, Pickup M, Samaras S, Shyr Y, Moses HL, Hayward SW, Sterling JA, Zijlstra A. ALCAM/CD166 is a TGF-β-responsive marker and functional regulator of prostate cancer metastasis to bone. Cancer Res 2014; 74:1404-15. [PMID: 24385212 DOI: 10.1158/0008-5472.can-13-1296] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The dissemination of prostate cancer to bone is a common, incurable aspect of advanced disease. Prevention and treatment of this terminal phase of prostate cancer requires improved molecular understanding of the process as well as markers indicative of molecular progression. Through biochemical analyses and loss-of-function in vivo studies, we demonstrate that the cell adhesion molecule, activated leukocyte cell adhesion molecule (ALCAM), is actively shed from metastatic prostate cancer cells by the sheddase ADAM17 in response to TGF-β. Not only is this posttranslational modification of ALCAM a marker of prostate cancer progression, the molecule is also required for effective metastasis to bone. Biochemical analysis of prostate cancer cell lines reveals that ALCAM expression and shedding is elevated in response to TGF-β signaling. Both in vitro and in vivo shedding is mediated by ADAM17. Longitudinal analysis of circulating ALCAM in tumor-bearing mice revealed that shedding of tumor, but not host-derived ALCAM is elevated during growth of the cancer. Gene-specific knockdown of ALCAM in bone-metastatic PC3 cells greatly diminished both skeletal dissemination and tumor growth in bone. The reduced growth of ALCAM knockdown cells corresponded to an increase in apoptosis (caspase-3) and decreased proliferation (Ki67). Together, these data demonstrate that the ALCAM is both a functional regulator as well as marker of prostate cancer progression.
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Affiliation(s)
- Amanda G Hansen
- Authors' Affiliations: Departments of Pathology, Microbiology and Immunology, Cancer Biology, and Urologic Surgery, Division of Cancer Biostatistics, Vanderbilt University; Department of Medicine, Division of Clinical Pharmacology, Vanderbilt Center for Bone Biology; and Department of Veterans Affairs, Tennessee Valley Healthcare System, Nashville, Tennessee
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92
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Adrain C, Freeman M. Regulation of receptor tyrosine kinase ligand processing. Cold Spring Harb Perspect Biol 2014; 6:6/1/a008995. [PMID: 24384567 DOI: 10.1101/cshperspect.a008995] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A primary mode of regulating receptor tyrosine kinase (RTK) signaling is to control access of ligand to its receptor. Many RTK ligands are synthesized as transmembrane proteins. Frequently, the active ligand must be released from the membrane by proteolysis before signaling can occur. Here, we discuss RTK ligand shedding and describe the proteases that catalyze it in flies and mammals. We focus principally on the control of EGF receptor ligand shedding, but also refer to ligands of other RTKs. Two prominent themes emerge. First, control by regulated trafficking and cellular compartmentalization of the proteases and their ligand substrates plays a key role in shedding. Second, many external signals converge on the shedding proteases and their control machinery. Proteases therefore act as regulatory hubs that integrate information that the cell receives and translate it into precise outgoing signals. The activation of signaling by proteases is therefore an essential element of the cellular communication machinery.
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Affiliation(s)
- Colin Adrain
- MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge Biomedical Campus, Cambridge CB2 0QH, United Kingdom
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93
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Schwarz J, Schmidt S, Will O, Koudelka T, Köhler K, Boss M, Rabe B, Tholey A, Scheller J, Schmidt-Arras D, Schwake M, Rose-John S, Chalaris A. Polo-like kinase 2, a novel ADAM17 signaling component, regulates tumor necrosis factor α ectodomain shedding. J Biol Chem 2013; 289:3080-93. [PMID: 24338472 DOI: 10.1074/jbc.m113.536847] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
ADAM17 (a disintegrin and metalloprotease 17) controls pro- and anti-inflammatory signaling events by promoting ectodomain shedding of cytokine precursors and cytokine receptors. Despite the well documented substrate repertoire of ADAM17, little is known about regulatory mechanisms, leading to substrate recognition and catalytic activation. Here we report a direct interaction of the acidophilic kinase Polo-like kinase 2 (PLK2, also known as SNK) with the cytoplasmic portion of ADAM17 through the C-terminal noncatalytic region of PLK2 containing the Polo box domains. PLK2 activity leads to ADAM17 phosphorylation at serine 794, which represents a novel phosphorylation site. Activation of ADAM17 by PLK2 results in the release of pro-TNFα and TNF receptors from the cell surface, and pharmacological inhibition of PLK2 leads to down-regulation of LPS-induced ADAM17-mediated shedding on primary macrophages and dendritic cells. Importantly, PLK2 expression is up-regulated during inflammatory conditions increasing ADAM17-mediated proteolytic events. Our findings suggest a new role for PLK2 in the regulation of inflammatory diseases by modulating ADAM17 activity.
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Affiliation(s)
- Jeanette Schwarz
- From the Institute of Biochemistry, Christian-Albrechts-Universität zu Kiel, 24118 Kiel, Germany
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94
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Vidal PM, Lemmens E, Avila A, Vangansewinkel T, Chalaris A, Rose-John S, Hendrix S. ADAM17 is a survival factor for microglial cells in vitro and in vivo after spinal cord injury in mice. Cell Death Dis 2013; 4:e954. [PMID: 24336074 PMCID: PMC3877539 DOI: 10.1038/cddis.2013.466] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 10/16/2013] [Accepted: 10/23/2013] [Indexed: 02/05/2023]
Abstract
A disintegrin and metalloprotease 17 (ADAM17) is a sheddase with important substrates including tumor necrosis factor-α (TNF-α) and its receptors, the p75 neurotrophin receptor (p75NTR), and members of the epidermal growth factor family. The rationale of this study was to inhibit ADAM17-induced shedding of soluble TNF-α in order to reduce detrimental inflammation after spinal cord injury (SCI). However, using the specific ADAM17 blocker BMS-561392 in neuronal and glial cell cultures, we show that proper functioning of ADAM17 is vital for oligodendrocyte and microglia survival in a p44 MAPK-dependent manner. In contrast, genetic ablation of ADAM17 specifically increases microglial death. Surprisingly, although blocking ADAM17 in vivo does not substantially change the ratio between membrane-bound and soluble TNF-α, it increases expression of the pro-apoptotic marker Bax and microglial apoptosis while impairing functional recovery after SCI. These data suggest that ADAM17 is a key survival factor for microglial cells after SCI.
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Affiliation(s)
- P M Vidal
- Department of Morphology & Biomedical Research Institute, Hasselt University, Hasselt, Belgium
| | - E Lemmens
- Department of Morphology & Biomedical Research Institute, Hasselt University, Hasselt, Belgium
| | - A Avila
- 1] Department of Physiology & Biomedical Research Institute, Hasselt University, Hasselt, Belgium [2] Developmental Neurology Unit, GIGA-Neurosciences, University of Liège, Liège, Belgium [3] Interdisciplinary Cluster for Applied Genoproteomics (GIGA-R), University of Liège, Liège, Belgium
| | - T Vangansewinkel
- Department of Morphology & Biomedical Research Institute, Hasselt University, Hasselt, Belgium
| | - A Chalaris
- Institute of Biochemistry, Christian Albrechts University, Kiel, Germany
| | - S Rose-John
- Institute of Biochemistry, Christian Albrechts University, Kiel, Germany
| | - S Hendrix
- Department of Morphology & Biomedical Research Institute, Hasselt University, Hasselt, Belgium
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95
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Schwarz J, Broder C, Helmstetter A, Schmidt S, Yan I, Müller M, Schmidt-Arras D, Becker-Pauly C, Koch-Nolte F, Mittrücker HW, Rabe B, Rose-John S, Chalaris A. Short-term TNFα shedding is independent of cytoplasmic phosphorylation or furin cleavage of ADAM17. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1833:3355-3367. [DOI: 10.1016/j.bbamcr.2013.10.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 09/23/2013] [Accepted: 10/05/2013] [Indexed: 01/06/2023]
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96
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Ebsen H, Schröder A, Kabelitz D, Janssen O. Differential surface expression of ADAM10 and ADAM17 on human T lymphocytes and tumor cells. PLoS One 2013; 8:e76853. [PMID: 24130797 PMCID: PMC3793918 DOI: 10.1371/journal.pone.0076853] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2013] [Accepted: 08/26/2013] [Indexed: 12/25/2022] Open
Abstract
A disintegrin and metalloproteases (ADAMs) have been implicated in many processes controlling organismic development and integrity. Important substrates of ADAM proteases include growth factors, cytokines and their receptors and adhesion proteins. The inducible but irreversible cleavage of their substrates alters cell-cell communication and signaling. The crucial role of ADAM proteases (e.g. ADAM10 and 17) for mammalian development became evident from respective knockout mice, that displayed pre- or perinatal lethality with severe defects in many organs and tissues. Although many substrates for these two ADAM proteases were identified over the last decade, the regulation of their surface appearance, their enzymatic activity and their substrate specificity are still not well understood. We therefore analyzed the constitutive and inducible surface expression of ADAM10 and ADAM17 on a variety of human T cell and tumor cell lines. We demonstrate that ADAM10 is constitutively present at comparably high levels on the majority of the tested cell types. Stimulation with phorbol ester and calcium ionophore does not significantly alter the amount of surface ADAM10, except for a slight down-regulation from T cell blasts. Using FasL shedding as a readout for ADAM10 activity, we show that PKC activation and calcium mobilization are both prerequisite for activation of ADAM10 resulting in a production of soluble FasL. In contrast to ADAM10, the close relative ADAM17 is detected at only low levels on unstimulated cells. ADAM17 surface expression on T cell blasts is rapidly induced by stimulation. Since this inducible mobilization of ADAM17 is sensitive to inhibitors of actin filament formation, we propose that ADAM17 but not ADAM10 is prestored in a subcellular compartment that is transported to the cell surface in an activation- and actin-dependent manner.
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Affiliation(s)
- Henriette Ebsen
- University of Kiel, Institute for Immunology, University Hospital Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - Alexandra Schröder
- University of Kiel, Institute for Immunology, University Hospital Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - Dieter Kabelitz
- University of Kiel, Institute for Immunology, University Hospital Schleswig-Holstein Campus Kiel, Kiel, Germany
| | - Ottmar Janssen
- University of Kiel, Institute for Immunology, University Hospital Schleswig-Holstein Campus Kiel, Kiel, Germany
- * E-mail:
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97
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Yan F, Liu L, Dempsey PJ, Tsai YH, Raines EW, Wilson CL, Cao H, Cao Z, Liu L, Polk DB. A Lactobacillus rhamnosus GG-derived soluble protein, p40, stimulates ligand release from intestinal epithelial cells to transactivate epidermal growth factor receptor. J Biol Chem 2013; 288:30742-30751. [PMID: 24043629 DOI: 10.1074/jbc.m113.492397] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
p40, a Lactobacillus rhamnosus GG (LGG)-derived soluble protein, ameliorates intestinal injury and colitis, reduces apoptosis, and preserves barrier function by transactivation of the EGF receptor (EGFR) in intestinal epithelial cells. The aim of this study is to determine the mechanisms by which p40 transactivates the EGFR in intestinal epithelial cells. Here we show that p40-conditioned medium activates EGFR in young adult mouse colon epithelial cells and human colonic epithelial cell line, T84 cells. p40 up-regulates a disintegrin and metalloproteinase domain-containing protein 17 (ADAM17) catalytic activity, and broad spectrum metalloproteinase inhibitors block EGFR transactivation by p40 in these two cell lines. In ADAM17-deficient mouse colonic epithelial (ADAM17(-/-) MCE) cells, p40 transactivation of EGFR is blocked, but can be rescued by re-expression with WT ADAM17. Furthermore, p40 stimulates release of heparin binding (HB)-EGF, but not transforming growth factor (TGF)α or amphiregulin, in young adult mouse colon cells and ADAM17(-/-) MCE cells overexpressing WT ADAM17. Knockdown of HB-EGF expression by siRNA suppresses p40 effects on transactivating EGFR and Akt, preventing apoptosis, and preserving tight junction function. The effects of p40 on HB-EGF release and ADAM17 activation in vivo are examined after administration of p40-containing pectin/zein hydrogel beads to mice. p40 stimulates ADAM17 activity and EGFR activation in colonic epithelial cells and increases HB-EGF levels in blood from WT mice, but not from mice with intestinal epithelial cell-specific ADAM17 deletion. Thus, these data define a mechanism of a probiotic-derived soluble protein in modulating intestinal epithelial cell homeostasis through ADAM17-mediated HB-EGF release, leading to transactivation of EGFR.
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Affiliation(s)
- Fang Yan
- From the Departments of Pediatrics and
| | | | - Peter J Dempsey
- the Departments of Pediatrics and Communicable Diseases and; Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan 48109
| | - Yu-Hwai Tsai
- the Departments of Pediatrics and Communicable Diseases and; Molecular and Integrative Physiology, University of Michigan, Ann Arbor, Michigan 48109
| | - Elaine W Raines
- the Department of Pathology, University of Washington School of Medicine, Seattle, Washington 98195
| | - Carole L Wilson
- the Department of Pathology, University of Washington School of Medicine, Seattle, Washington 98195
| | - Hailong Cao
- From the Departments of Pediatrics and; the Department of Gastroenterology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Zheng Cao
- Medicine, Division of Gastroenterology, Hepatology and Nutrition, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - LinShu Liu
- the Eastern Regional Research Center, Agricultural Research Service, United States Department of Agriculture, Wyndmoor, Pennsylvania 19038, and
| | - D Brent Polk
- the Departments of Pediatrics and Biochemistry and Molecular Biology, University of Southern California and Saban Research Institute of Children's Hospital Los Angeles, Los Angeles, California 90089.
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98
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PDK1 decreases TACE-mediated α-secretase activity and promotes disease progression in prion and Alzheimer's diseases. Nat Med 2013; 19:1124-31. [DOI: 10.1038/nm.3302] [Citation(s) in RCA: 87] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Accepted: 07/16/2013] [Indexed: 12/17/2022]
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99
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Mruk DD, Xiao X, Lydka M, Li MWM, Bilinska B, Cheng CY. Intercellular adhesion molecule 1: recent findings and new concepts involved in mammalian spermatogenesis. Semin Cell Dev Biol 2013; 29:43-54. [PMID: 23942142 DOI: 10.1016/j.semcdb.2013.07.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 07/26/2013] [Accepted: 07/29/2013] [Indexed: 01/05/2023]
Abstract
Spermatogenesis, the process of spermatozoa production, is regulated by several endocrine factors, including testosterone, follicle stimulating hormone, luteinizing hormone and estradiol 17β. For spermatogenesis to reach completion, developing germ cells must traverse the seminiferous epithelium while remaining transiently attached to Sertoli cells. If germ cell adhesion were to be compromised for a period of time longer than usual, germ cells would slough from the seminiferous epithelium and infertility would result. Presently, Sertoli-germ cell adhesion is known to be mediated largely by classical and desmosomal cadherins. More recent studies, however, have begun to expand long-standing concepts and to examine the roles of other proteins such as intercellular adhesion molecules. In this review, we focus on the biology of intercellular adhesion molecules in the mammalian testis, hoping that this information is useful in the design of future studies.
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Affiliation(s)
- Dolores D Mruk
- Center for Biomedical Research, Population Council, 1230 York Avenue, New York, NY 10065, United States.
| | - Xiang Xiao
- Center for Biomedical Research, Population Council, 1230 York Avenue, New York, NY 10065, United States
| | - Marta Lydka
- Center for Biomedical Research, Population Council, 1230 York Avenue, New York, NY 10065, United States
| | - Michelle W M Li
- Center for Biomedical Research, Population Council, 1230 York Avenue, New York, NY 10065, United States
| | - Barbara Bilinska
- Institute of Zoology, Department of Endocrinology, The Jagiellonian University, Gronostajowa 9, 30-387 Krakow, Poland
| | - C Yan Cheng
- Center for Biomedical Research, Population Council, 1230 York Avenue, New York, NY 10065, United States
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100
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Niu A, Wen Y, Liu H, Zhan M, Jin B, Li YP. Src mediates the mechanical activation of myogenesis by activating TNFα-converting enzyme. J Cell Sci 2013; 126:4349-57. [PMID: 23868980 DOI: 10.1242/jcs.125328] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Mechanical stimulation affects many biological aspects in living cells through mechanotransduction. In myogenic precursor cells (MPCs), mechanical stimulation activates p38 mitogen-activated protein kinase (MAPK), a key regulator of myogenesis, via activating TNFα-converting enzyme (TACE, also known as ADAM17), to release autocrine TNFα. However, the signaling mechanism of mechanical activation of TACE is unknown. Because TACE possesses the structural features of substrates of the non-receptor tyrosine kinase Src, we tested the hypothesis that Src mediates mechanical activation of TACE in MPCs. We observed that mechanical stretch of C2C12 or primary rat myoblasts rapidly activates Src, which in turn interacts and colocalizes with TACE, resulting in tyrosine phosphorylation and activation of TACE. Particularly, Src activates TACE via the phosphorylation of amino acid residue Tyr702 in the intracellular tail of TACE, resulting in increased TNFα release and p38 activation. Src inhibition or deficiency blocks stretch activation of the TACE-p38-MAPK signaling, resulting in impaired myogenic gene expression. In response to functional overloading, Src and TACE are activated in mouse soleus muscle. Further, overloading-induced myogenesis and regeneration are impaired in the soleus of Src(+/-) mice. Therefore, Src mediates mechano-activation of TACE and myogenesis.
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Affiliation(s)
- Airu Niu
- Department of Integrative Biology and Pharmacology, University of Texas Health Science Center, Houston, TX 77030, USA
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