1
|
Robinson TP, Hamidi T, Counts B, Guttridge DC, Ostrowski MC, Zimmers TA, Koniaris LG. The impact of inflammation and acute phase activation in cancer cachexia. Front Immunol 2023; 14:1207746. [PMID: 38022578 PMCID: PMC10644737 DOI: 10.3389/fimmu.2023.1207746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 10/13/2023] [Indexed: 12/01/2023] Open
Abstract
The development of cachexia in the setting of cancer or other chronic diseases is a significant detriment for patients. Cachexia is associated with a decreased ability to tolerate therapies, reduction in ambulation, reduced quality of life, and increased mortality. Cachexia appears intricately linked to the activation of the acute phase response and is a drain on metabolic resources. Work has begun to focus on the important inflammatory factors associated with the acute phase response and their role in the immune activation of cachexia. Furthermore, data supporting the liver, lung, skeletal muscle, and tumor as all playing a role in activation of the acute phase are emerging. Although the acute phase is increasingly being recognized as being involved in cachexia, work in understanding underlying mechanisms of cachexia associated with the acute phase response remains an active area of investigation and still lack a holistic understanding and a clear causal link. Studies to date are largely correlative in nature, nonetheless suggesting the possibility for a role for various acute phase reactants. Herein, we examine the current literature regarding the acute phase response proteins, the evidence these proteins play in the promotion and exacerbation of cachexia, and current evidence of a therapeutic potential for patients.
Collapse
Affiliation(s)
- Tyler P. Robinson
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Tewfik Hamidi
- Department of Surgery, Oregon Health Sciences University, Portland, OR, United States
| | - Brittany Counts
- Department of Surgery, Oregon Health Sciences University, Portland, OR, United States
| | - Denis C. Guttridge
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, United States
| | - Michael C. Ostrowski
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, United States
| | - Teresa A. Zimmers
- Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, United States
- Department of Surgery, Oregon Health Sciences University, Portland, OR, United States
| | - Leonidas G. Koniaris
- Department of Surgery, Oregon Health Sciences University, Portland, OR, United States
| |
Collapse
|
2
|
Arguinchona LM, Zagona-Prizio C, Joyce ME, Chan ED, Maloney JP. Microvascular significance of TGF-β axis activation in COVID-19. Front Cardiovasc Med 2023; 9:1054690. [PMID: 36684608 PMCID: PMC9852847 DOI: 10.3389/fcvm.2022.1054690] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 12/09/2022] [Indexed: 01/09/2023] Open
Abstract
As 2023 approaches, the COVID-19 pandemic has killed millions. While vaccines have been a crucial intervention, only a few effective medications exist for prevention and treatment of COVID-19 in breakthrough cases or in unvaccinated or immunocompromised patients. SARS-CoV-2 displays early and unusual features of micro-thrombosis and immune dysregulation that target endothelial beds of the lungs, skin, and other organs. Notably, anticoagulation improves outcomes in some COVID-19 patients. The protein transforming growth factor-beta (TGF-β1) has constitutive roles in maintaining a healthy microvasculature through its roles in regulating inflammation, clotting, and wound healing. However, after infection (including viral infection) TGF-β1 activation may augment coagulation, cause immune dysregulation, and direct a path toward tissue fibrosis. Dysregulation of TGF-β signaling in immune cells and its localization in areas of microvascular injury are now well-described in COVID-19, and such events may contribute to the acute respiratory distress syndrome and skin micro-thrombosis outcomes frequently seen in severe COVID-19. The high concentration of TGF-β in platelets and in other cells within microvascular thrombi, its ability to activate the clotting cascade and dysregulate immune pathways, and its pro-fibrotic properties all contribute to a unique milieu in the COVID-19 microvasculature. This unique environment allows for propagation of microvascular clotting and immune dysregulation. In this review we summarize the physiological functions of TGF-β and detail the evidence for its effects on the microvasculature in COVID-19. In addition, we explore the potential role of existing TGF-β inhibitors for the prevention and treatment of COVID-19 associated microvascular thrombosis and immune dysregulation.
Collapse
Affiliation(s)
- Lauren M. Arguinchona
- School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Caterina Zagona-Prizio
- School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Megan E. Joyce
- Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Edward D. Chan
- Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States,Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, CO, United States,National Jewish Health, Denver, CO, United States
| | - James P. Maloney
- Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States,*Correspondence: James P. Maloney,
| |
Collapse
|
3
|
Yakovleva EV, Zozulya NI. Physiological and pathological role of factor XII. RUSSIAN JOURNAL OF HEMATOLOGY AND TRANSFUSIOLOGY 2022. [DOI: 10.35754/0234-5730-2022-67-4-570-578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Introduction. The most widely accepted notion of the function of blood clotting factor XII (FXII, Hageman factor) is its involvement in the internal blood clotting pathway. However, the biological role of FXII is diverse.Aim – to review the diverse biological functions of FXII.Main findings. FXII is a serine protease. The structure of FXII has a high degree of homology with plasminogen, tissue plasminogen activator and urokinase plasminogen activator. Activated FXII (FXIIa) has five substrates: high-molecular kininogen, precallikrein, FXI, plasminogen, complement proteins (C1s, C1r). FXII provides hemostatic balance by participating in the processes of blood clotting and fibrinolysis. FXII regulates inflammatory and allergic reactions by interacting with the kallikreinkinin system and the complement system. FXII has biological activity in various cells in vivo: endotheliocytes, platelets, monocytes, neutrophils, fi broblasts, dendritic cells, which determines its diverse role in physiological and pathological processes.
Collapse
|
4
|
Jaffar J, McMillan L, Wilson N, Panousis C, Hardy C, Cho HJ, Symons K, Glaspole I, Westall G, Wong M. Coagulation Factor-XII induces interleukin-6 by primary lung fibroblasts: A role in idiopathic pulmonary fibrosis? Am J Physiol Lung Cell Mol Physiol 2021; 322:L258-L272. [PMID: 34873957 DOI: 10.1152/ajplung.00165.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Background The mechanisms driving idiopathic pulmonary fibrosis (IPF) remain undefined, however it is postulated that coagulation imbalances may play a role. The impact of blood-derived clotting factors, including factor XII (FXII) has not been investigated in the context of IPF. Methods Plasma levels of FXII were measured by ELISA in patients with IPF and age-matched healthy donors. Expression of FXII in human lung tissue was quantified using multiplex immunohistochemistry and western blotting. Mechanistic investigation of FXII activity was assessed in vitro on primary lung fibroblasts using qPCR and specific receptor/FXII inhibition. The functional outcome of FXII on fibroblast migration was examined by high-content image analysis. Findings Compared to 35 healthy donors, plasma levels of FXII were not higher in IPF (n=27, p>0·05). Tissue FXII was elevated in IPF (n=11) and increased numbers of FXII+ cells were found in IPF (n=8) lung tissue compared to non-diseased controls (n=6, p<0·0001). Activated FXII induced IL6 mRNA and IL-6 protein in fibroblasts that was blocked by anti-FXII antibody, CSL312. FXII-induced IL-6 production via PAR-1 and NF-kB. FXII induced migration of fibroblasts in a concentration-dependent manner. Interpretation FXII is normally confined to the circulation but leaks from damaged vessels into the lung interstitium in IPF where it 1) induces IL-6 production and 2) enhances migration of resident fibroblasts, critical events that drive chronic inflammation and therefore, contribute to fibrotic disease progression. Targeting FXII-induced fibroblastic processes in IPF may ameliorate pulmonary fibrosis. Funding National Health and Medical Research Council CRE in Lung Fibrosis and CSL Ltd.
Collapse
Affiliation(s)
- Jade Jaffar
- Department of Immunology and Pathology, Monash University, Australia.,Department of Respiratory Medicine, The Alfred Hospital, Australia
| | | | | | | | | | - Hyun Jung Cho
- Biological Optical Microscopy Platform, The University of Melbourne, Australia
| | - Karen Symons
- Department of Respiratory Medicine, The Alfred Hospital, Australia
| | - Ian Glaspole
- Department of Immunology and Pathology, Monash University, Australia.,Department of Respiratory Medicine, The Alfred Hospital, Australia
| | - Glen Westall
- Department of Immunology and Pathology, Monash University, Australia.,Department of Respiratory Medicine, The Alfred Hospital, Australia
| | - Mae Wong
- CSL Limited, Parkville, Victoria, Australia
| |
Collapse
|
5
|
Ye Z, Hu Y. TGF‑β1: Gentlemanly orchestrator in idiopathic pulmonary fibrosis (Review). Int J Mol Med 2021; 48:132. [PMID: 34013369 PMCID: PMC8136122 DOI: 10.3892/ijmm.2021.4965] [Citation(s) in RCA: 75] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 04/29/2021] [Indexed: 01/09/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a worldwide disease characterized by the chronic and irreversible decline of lung function. Currently, there is no drug to successfully treat the disease except for lung transplantation. Numerous studies have been devoted to the study of the fibrotic process of IPF and findings showed that transforming growth factor‑β1 (TGF‑β1) plays a central role in the development of IPF. TGF‑β1 promotes the fibrotic process of IPF through various signaling pathways, including the Smad, MAPK, and ERK signaling pathways. There are intersections between these signaling pathways, which provide new targets for researchers to study new drugs. In addition, TGF‑β1 can affect the fibrosis process of IPF by affecting oxidative stress, epigenetics and other aspects. Most of the processes involved in TGF‑β1 promote IPF, but TGF‑β1 can also inhibit it. This review discusses the role of TGF‑β1 in IPF.
Collapse
Affiliation(s)
- Zhimin Ye
- Department of Pathology, Basic Medical School, Central South University, Changsha, Hunan 410006, P.R. China
| | - Yongbin Hu
- Department of Pathology, Basic Medical School, Central South University, Changsha, Hunan 410006, P.R. China
| |
Collapse
|
6
|
Rangaswamy C, Mailer RK, Englert H, Konrath S, Renné T. The contact system in liver injury. Semin Immunopathol 2021; 43:507-517. [PMID: 34125270 PMCID: PMC8202222 DOI: 10.1007/s00281-021-00876-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/27/2021] [Indexed: 01/18/2023]
Abstract
Coagulation is controlled by a delicate balance of prothrombotic and antithrombotic mechanisms, to prevent both excessive blood loss from injured vessels and pathologic thrombosis. The liver plays a pivotal role in hemostasis through the synthesis of plasma coagulation factors and their inhibitors that, in addition to thrombosis and hemostasis, orchestrates an array of inflammatory responses. As a result, impaired liver function has been linked with both hypercoagulability and bleeding disorders due to a pathologic balance of pro- and anticoagulant plasma factors. At sites of vascular injury, thrombus propagation that finally may occlude the blood vessel depends on negatively charged biopolymers, such as polyphosphates and extracellular DNA, that provide a physiological surface for contact activation of coagulation factor XII (FXII). FXII initiates the contact system that drives both the intrinsic pathway of coagulation, and formation of the inflammatory mediator bradykinin by the kallikrein–kinin system. Moreover, FXII facilitates receptor-mediated signalling, thereby promoting mitogenic activities, angiogenesis, and neutrophil stimulation with implications for liver diseases. Here, we summarize current knowledge on the FXII-driven contact system in liver diseases and review therapeutic approaches to target its activities during impaired liver function.
Collapse
Affiliation(s)
- Chandini Rangaswamy
- Institute of Clinical Chemistry and Laboratory Medicine (O26), University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246, Hamburg, Germany
| | - Reiner K Mailer
- Institute of Clinical Chemistry and Laboratory Medicine (O26), University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246, Hamburg, Germany
| | - Hanna Englert
- Institute of Clinical Chemistry and Laboratory Medicine (O26), University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246, Hamburg, Germany
| | - Sandra Konrath
- Institute of Clinical Chemistry and Laboratory Medicine (O26), University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246, Hamburg, Germany
| | - Thomas Renné
- Institute of Clinical Chemistry and Laboratory Medicine (O26), University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246, Hamburg, Germany.
| |
Collapse
|
7
|
Carvacho I, Piesche M. RGD-binding integrins and TGF-β in SARS-CoV-2 infections - novel targets to treat COVID-19 patients? Clin Transl Immunology 2021; 10:e1240. [PMID: 33747508 PMCID: PMC7971943 DOI: 10.1002/cti2.1240] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 12/22/2020] [Accepted: 12/22/2020] [Indexed: 02/06/2023] Open
Abstract
The new coronavirus SARS-CoV-2 is a global pandemic and a severe public health crisis. SARS-CoV-2 is highly contagious and shows high mortality rates, especially in elderly and patients with pre-existing medical conditions. At the current stage, no effective drugs are available to treat these patients. In this review, we analyse the rationale of targeting RGD-binding integrins to potentially inhibit viral cell infection and to block TGF-β activation, which is involved in the severity of several human pathologies, including the complications of severe COVID-19 cases. Furthermore, we demonstrate the correlation between ACE2 and TGF-β expression and the possible consequences for severe COVID-19 infections. Finally, we list approved drugs or drugs in clinical trials for other diseases that also target the RGD-binding integrins or TGF-β. These drugs have already shown a good safety profile and, therefore, can be faster brought into a trial to treat COVID-19 patients.
Collapse
Affiliation(s)
- Ingrid Carvacho
- Department of Biology and ChemistryFaculty of Basic SciencesUniversidad Católica del MauleTalcaChile
| | - Matthias Piesche
- Biomedical Research Laboratories, Medicine FacultyUniversidad Católica del MauleTalcaChile
- Oncology Center, Medicine FacultyUniversidad Católica del MauleTalcaChile
| |
Collapse
|
8
|
Khurana P, Gupta A, Sugadev R, Sharma YK, Varshney R, Ganju L, Kumar B. nSARS-Cov-2, pulmonary edema and thrombosis: possible molecular insights using miRNA-gene circuits in regulatory networks. ACTA ACUST UNITED AC 2020; 2:16. [PMID: 33209992 PMCID: PMC7596315 DOI: 10.1186/s41544-020-00057-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 10/18/2020] [Indexed: 12/11/2022]
Abstract
Background Given the worldwide spread of the novel Severe Acute Respiratory Syndrome Coronavirus 2 (nSARS-CoV-2) infection pandemic situation, research to repurpose drugs, identify novel drug targets, vaccine candidates have created a new race to curb the disease. While the molecular signature of nSARS-CoV-2 is still under investigation, growing literature shows similarity among nSARS-CoV-2, pulmonary edema, and thromboembolic disorders due to common symptomatic features. A network medicine approach is used to to explore the molecular complexity of the disease and to uncover common molecular trajectories of edema and thrombosis with nSARS-CoV-2. Results and conclusion A comprehensive nSARS-CoV-2 responsive miRNA: Transcription Factor (TF): gene co-regulatory network was built using host-responsive miRNAs and it’s associated tripartite, Feed-Forward Loops (FFLs) regulatory circuits were identified. These regulatory circuits regulate signaling pathways like virus endocytosis, viral replication, inflammatory response, pulmonary vascularization, cell cycle control, virus spike protein stabilization, antigen presentation, etc. A unique miRNA-gene regulatory circuit containing a consortium of four hub FFL motifs is proposed to regulate the virus-endocytosis and antigen-presentation signaling pathways. These regulatory circuits also suggest potential correlations/similarity in the molecular mechanisms during nSARS-CoV-2 infection, pulmonary diseases and thromboembolic disorders and thus could pave way for repurposing of drugs. Some important miRNAs and genes have also been proposed as potential candidate markers. A detailed molecular snapshot of TGF signaling as the common pathway, that could play an important role in controlling common pathophysiologies among diseases, is also put forth. Supplementary information Supplementary information accompanies this paper at 10.1186/s41544-020-00057-y.
Collapse
Affiliation(s)
- P Khurana
- Defence Institute of Physiology and Allied Sciences, Defence R&D Organization, Lucknow Road, Timarpur, New Delhi, India
| | - A Gupta
- Defence Institute of Physiology and Allied Sciences, Defence R&D Organization, Lucknow Road, Timarpur, New Delhi, India
| | - R Sugadev
- Defence Institute of Physiology and Allied Sciences, Defence R&D Organization, Lucknow Road, Timarpur, New Delhi, India
| | - Y K Sharma
- Defence Institute of Physiology and Allied Sciences, Defence R&D Organization, Lucknow Road, Timarpur, New Delhi, India
| | - R Varshney
- Defence Institute of Physiology and Allied Sciences, Defence R&D Organization, Lucknow Road, Timarpur, New Delhi, India
| | - L Ganju
- Defence Institute of Physiology and Allied Sciences, Defence R&D Organization, Lucknow Road, Timarpur, New Delhi, India
| | - B Kumar
- Defence Institute of Physiology and Allied Sciences, Defence R&D Organization, Lucknow Road, Timarpur, New Delhi, India
| |
Collapse
|
9
|
Pinheiro A, Schmaier AH. Factor XII's autoactivation and cell biology interdigitate in disease states. J Thromb Haemost 2020; 18:1808-1812. [PMID: 32468711 DOI: 10.1111/jth.14880] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 04/23/2020] [Accepted: 04/24/2020] [Indexed: 11/26/2022]
Affiliation(s)
- Alessandro Pinheiro
- Division of Hematology and Oncology, Department of Medicine, Case Western Reserve University and University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Alvin H Schmaier
- Division of Hematology and Oncology, Department of Medicine, Case Western Reserve University and University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| |
Collapse
|
10
|
McMillin M, Grant S, Frampton G, Petrescu AD, Williams E, Jefferson B, DeMorrow S. The TGFβ1 Receptor Antagonist GW788388 Reduces JNK Activation and Protects Against Acetaminophen Hepatotoxicity in Mice. Toxicol Sci 2020; 170:549-561. [PMID: 31132129 DOI: 10.1093/toxsci/kfz122] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Acute liver failure is a serious consequence of acetaminophen (APAP)-induced hepatotoxic liver injury with high rates of morbidity and mortality. Transforming growth factor beta 1 (TGFβ1) is elevated during liver injury and influences hepatocyte senescence during APAP-induced hepatotoxicity. This study investigated TGFβ1 signaling in the context of inflammation, necrotic cell death, and oxidative stress during APAP-induced liver injury. Male C57Bl/6 mice were injected with 600 mg/kg APAP to generate liver injury in the presence or absence of the TGFβ receptor 1 inhibitor, GW788388, 1 h prior to APAP administration. Acetaminophen-induced liver injury was characterized using histological and biochemical measures. Transforming growth factor beta 1 expression and signal transduction were assessed using immunohistochemistry, Western blotting and ELISA assays. Hepatic necrosis, liver injury, cell proliferation, hepatic inflammation, and oxidative stress were assessed in all mice. Acetaminophen administration significantly induced necrosis and elevated serum transaminases compared with control mice. Transforming growth factor beta 1 staining was observed in and around areas of necrosis with phosphorylation of SMAD3 observed in hepatocytes neighboring necrotic areas in APAP-treated mice. Pretreatment with GW788388 prior to APAP administration in mice reduced hepatocyte cell death and stimulated regeneration. Phosphorylation of SMAD3 was reduced in APAP mice pretreated with GW788388 and this correlated with reduced hepatic cytokine production and oxidative stress. These results support that TGFβ1 signaling plays a significant role in APAP-induced liver injury by influencing necrotic cell death, inflammation, oxidative stress, and hepatocyte regeneration. In conclusion, targeting TGFβ1 or downstream signaling may be a possible therapeutic target for the management of APAP-induced liver injury.
Collapse
Affiliation(s)
- Matthew McMillin
- Department of Internal Medicine, Dell Medical School, The University of Texas at Austin, Austin, Texas 78712.,Central Texas Veterans Health Care System, Austin, Texas, 78712.,Department of Medical Physiology, College of Medicine, Texas A&M University Health Science Center, Temple, Texas, 76504
| | - Stephanie Grant
- Central Texas Veterans Health Care System, Austin, Texas, 78712.,Department of Medical Physiology, College of Medicine, Texas A&M University Health Science Center, Temple, Texas, 76504.,Division of Pharmacology and Toxicology, College of Pharmacy, University of Texas at Austin, Austin, Texas, 78712
| | - Gabriel Frampton
- Department of Internal Medicine, Dell Medical School, The University of Texas at Austin, Austin, Texas 78712.,Central Texas Veterans Health Care System, Austin, Texas, 78712.,Department of Medical Physiology, College of Medicine, Texas A&M University Health Science Center, Temple, Texas, 76504
| | - Anca D Petrescu
- Central Texas Veterans Health Care System, Austin, Texas, 78712.,Department of Medical Physiology, College of Medicine, Texas A&M University Health Science Center, Temple, Texas, 76504.,Division of Pharmacology and Toxicology, College of Pharmacy, University of Texas at Austin, Austin, Texas, 78712
| | - Elaina Williams
- Central Texas Veterans Health Care System, Austin, Texas, 78712.,Department of Medical Physiology, College of Medicine, Texas A&M University Health Science Center, Temple, Texas, 76504.,Division of Pharmacology and Toxicology, College of Pharmacy, University of Texas at Austin, Austin, Texas, 78712
| | - Brandi Jefferson
- Central Texas Veterans Health Care System, Austin, Texas, 78712.,Department of Medical Physiology, College of Medicine, Texas A&M University Health Science Center, Temple, Texas, 76504
| | - Sharon DeMorrow
- Department of Internal Medicine, Dell Medical School, The University of Texas at Austin, Austin, Texas 78712.,Central Texas Veterans Health Care System, Austin, Texas, 78712.,Department of Medical Physiology, College of Medicine, Texas A&M University Health Science Center, Temple, Texas, 76504.,Division of Pharmacology and Toxicology, College of Pharmacy, University of Texas at Austin, Austin, Texas, 78712
| |
Collapse
|
11
|
Schmaier AH, Stavrou EX. Factor XII - What's important but not commonly thought about. Res Pract Thromb Haemost 2019; 3:599-606. [PMID: 31624779 PMCID: PMC6781921 DOI: 10.1002/rth2.12235] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 04/28/2019] [Accepted: 05/18/2019] [Indexed: 12/20/2022] Open
Abstract
Factor XII (FXII) becomes a serine protease when blood is exposed to artificial medical surfaces or when pathologic surfaces arise in disease states leading to its autoactivation. Initiation of the blood coagulation cascade was the first recognized activity of FXIIa. Blocking FXIIa activity formed on artificial medical surfaces should reduce induced blood coagulation leading to thrombosis. In contrast to FXII enzymatic activities, less is known about zymogen FXII functions. Studies show that zymogen FXII has biologic activity in various cells in vivo. In endothelium, FXII stimulates cell growth and proliferation and, in vivo, neoangiogenesis after injury. In fibroblasts, transforming growth factor-β increases FXII expression, which in turn stimulates fibroblast proliferation, contributing to tissue fibrosis. In neutrophils, FXII stimulates Akt2 to initiate neutrophil adhesion, migration, and chemotaxis, priming events leading to NETosis. Factor FXII deficiency leads to decreased neutrophil recruitment and improved wound healing. In dendritic cells, FXII contributes to neuroinflammation, and its deficiency or pharmacologic inhibition renders mice less susceptible to autoimmune encephalomyelitis. These combined studies indicate that FXII also contributes to multiple components of the inflammatory response. In sum, targeting FXII's biologic activities may provide novel approaches to reduce thrombosis and the inflammatory response in various disease states.
Collapse
Affiliation(s)
- Alvin H. Schmaier
- Department of MedicineCase Western Reserve UniversityClevelandOhio
- Department of MedicineUniversity Hospitals Cleveland Medical CenterClevelandOhio
| | - Evi X. Stavrou
- Department of MedicineCase Western Reserve UniversityClevelandOhio
- Department of MedicineVA Northeast Ohio Healthcare SystemClevelandOhio
| |
Collapse
|
12
|
Zamolodchikov D, Bai Y, Tang Y, McWhirter JR, Macdonald LE, Alessandri-Haber N. A Short Isoform of Coagulation Factor XII mRNA Is Expressed by Neurons in the Human Brain. Neuroscience 2019; 413:294-307. [PMID: 31181367 DOI: 10.1016/j.neuroscience.2019.05.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 04/29/2019] [Accepted: 05/21/2019] [Indexed: 01/24/2023]
Abstract
Coagulation factor XII (FXII) is synthesized in the liver and secreted into the circulation, where it initiates the contact activation system. Although typically thought to be restricted to the circulation, FXII protein has been found in the brain of Alzheimer's disease (AD) and multiple sclerosis patients. Moreover, activation of the contact system has been detected in the cerebrospinal fluid of these patients as well as in the brain of healthy and AD individuals. While FXII protein has been detected in the brain, its source and its potential role in brain physiology and/or pathology have not been elucidated. Using in situ hybridization, we show that a shorter FXII mRNA isoform is expressed by neurons in human brain and in the brain of FXII humanized mice, with the highest expression observed in pyramidal neurons. This shorter FXII transcript contains an open reading frame coding for the portion of FXII that spans its proline-rich and catalytic domains (FXII297-596). We show that a recombinant version of this shorter FXII protein is activated by plasma kallikrein, reciprocally activates prekallikrein, and converts pro-hepatocyte growth factor (HGF) to active HGF in vitro. HGF-Met signaling plays a role in neuronal development and survival, and its dysregulation has been implicated in neurodevelopmental disorders and neurodegeneration. Taken together, our results show that a short isoform of FXII mRNA is expressed in the brain and raise the possibility that brain-derived FXII may be involved in HGF-Met signaling in neurons.
Collapse
Affiliation(s)
- Daria Zamolodchikov
- Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA.
| | - Yu Bai
- Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA
| | - Yajun Tang
- Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA
| | - John R McWhirter
- Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA
| | - Lynn E Macdonald
- Regeneron Pharmaceuticals, Inc., 777 Old Saw Mill River Road, Tarrytown, NY, 10591, USA
| | | |
Collapse
|
13
|
Deng S, Zhang H, Han W, Guo C, Deng C. Transforming Growth Factor-β-Neutralizing Antibodies Improve Alveolarization in the Oxygen-Exposed Newborn Mouse Lung. J Interferon Cytokine Res 2019; 39:106-116. [PMID: 30657417 DOI: 10.1089/jir.2018.0080] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Abnormal alveolar formation and excessive disordered elastin accumulation are key pathological features in bronchopulmonary dysplasia. Transforming growth factor (TGF)-β is an important regulator of the extracellular matrix in the developing lung. To determine if increased TGF-β would injure alveolar development by activating TGF-β signaling and by influencing the expression of elastogenesis-related protein, we performed intraperitoneal injection of newborn mice with the TGF-β-neutralizing antibody 1D11 and observed whether 1D11 had a protective role in the oxygen (O2)-exposed newborn mouse lung. The newborn mice were exposed to 85% O2 for 14 and 21 days. 1D11 was administered by intraperitoneal injection every day from postnatal days 3 to 20. Alveolar morphology was assessed by hematoxylin and eosin staining. The expression and distribution of elastin were evaluated by immunohistochemistry. The level of TGF-β signaling-related proteins were measured by immunohistochemistry, enzyme-linked immunosorbent assay, and Western blot. The expression levels of elastogenesis-related proteins, including tropoelastin, fibulin-5, and neutrophil elastase (NE), which participate in the synthesis, assembly, and degradation of elastin, were detected by real-time PCR and Western blot. In this research, impaired alveolar development and elastin deposition as well as the excessive activation of TGF-β signaling were observed in the newborn mouse lung exposed to hyperoxia. 1D11 improved alveolarization as well as the distribution of elastin in the newborn lung with hyperoxia exposure. The expression levels of tropoelastin, fibulin-5, and NE, which are important components of elastogenesis, were decreased by treatment with 1D11 in the injured newborn lung. These data demonstrate that 1D11 improved alveolarization by blocking the TGF-β signaling pathway and by reducing the abnormal expression of elastogenesis-related proteins in the O2-exposed newborn mouse lung. 1D11 may become a new therapeutic method to prevent the development of bronchopulmonary dysplasia.
Collapse
Affiliation(s)
- Sijun Deng
- 1 Department of Neonatology, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China.,2 China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China.,3 Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Han Zhang
- 1 Department of Neonatology, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China.,2 China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China.,3 Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Wenli Han
- 2 China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China.,3 Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China.,4 Laboratory Animal Center, Chongqing Medical University, Chongqing, China
| | - Chunbao Guo
- 1 Department of Neonatology, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China.,2 China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China.,3 Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China.,5 Department of Hepatology and Liver Transplantation Center, Children's Hospital, Chongqing Medical University, Chongqing, China
| | - Chun Deng
- 1 Department of Neonatology, Children's Hospital of Chongqing Medical University, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China.,2 China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China.,3 Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| |
Collapse
|
14
|
Wujak L, Böttcher RT, Pak O, Frey H, El Agha E, Chen Y, Schmitt S, Bellusci S, Schaefer L, Weissmann N, Fässler R, Wygrecka M. Low density lipoprotein receptor-related protein 1 couples β1 integrin activation to degradation. Cell Mol Life Sci 2018; 75:1671-1685. [PMID: 29116364 PMCID: PMC11105666 DOI: 10.1007/s00018-017-2707-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 09/19/2017] [Accepted: 11/01/2017] [Indexed: 01/09/2023]
Abstract
Low density lipoprotein receptor-related protein (LRP) 1 modulates cell adhesion and motility under normal and pathological conditions. Previous studies documented that LRP1 binds several integrin receptors and mediates their trafficking to the cell surface and endocytosis. However, the mechanism by which LRP1 may regulate integrin activation remains unknown. Here we report that LRP1 promotes the activation and subsequent degradation of β1 integrin and thus supports cell adhesion, spreading, migration and integrin signaling on fibronectin. LRP1 interacts with surface β1 integrin, binds the integrin activator kindlin2 and stimulates β1 integrin-kindlin2 complex formation. Specifically, serine 76 in the LRP1 cytoplasmic tail is crucial for the interaction with kindlin2, β1 integrin activation and cell adhesion. Interestingly, a loss of LRP1 induces the accumulation of several integrin receptors on the cell surface. Following internalization, intracellular trafficking of integrins is driven by LRP1 in a protein kinase C- and class II myosin-dependent manner. Ultimately, LRP1 dictates the fate of endocytosed β1 integrin by directing it down the pathway of lysosomal and proteasomal degradation. We propose that LRP1 mediates cell adhesion by orchestrating a multi-protein pathway to activate, traffic and degrade integrins. Thus, LRP1 may serve as a focal point in the integrin quality control system to ensure a firm connection to the extracellular matrix.
Collapse
Affiliation(s)
- Lukasz Wujak
- Department of Biochemistry, Justus Liebig University, 35392, Giessen, Germany
| | - Ralph T Böttcher
- Max Planck Institute of Biochemistry, 82152, Martinsried, Germany
- German Center for Cardiovascular Research (DZHK), Munich Heart Alliance, Munich, Germany
| | - Oleg Pak
- Excellence Cluster Cardio-Pulmonary System, Justus Liebig University, 35392, Giessen, Germany
| | - Helena Frey
- Institute of Pharmacology and Toxicology, Goethe University School of Medicine, University Hospital, 60590, Frankfurt am Main, Germany
| | - Elie El Agha
- Excellence Cluster Cardio-Pulmonary System, Justus Liebig University, 35392, Giessen, Germany
| | - Ying Chen
- Department of Biochemistry, Justus Liebig University, 35392, Giessen, Germany
| | - Sigrid Schmitt
- Department of Biochemistry, Justus Liebig University, 35392, Giessen, Germany
| | - Saverio Bellusci
- Excellence Cluster Cardio-Pulmonary System, Justus Liebig University, 35392, Giessen, Germany
| | - Liliana Schaefer
- Institute of Pharmacology and Toxicology, Goethe University School of Medicine, University Hospital, 60590, Frankfurt am Main, Germany
| | - Norbert Weissmann
- Excellence Cluster Cardio-Pulmonary System, Justus Liebig University, 35392, Giessen, Germany
| | - Reinhard Fässler
- Max Planck Institute of Biochemistry, 82152, Martinsried, Germany
| | - Malgorzata Wygrecka
- Department of Biochemistry, Justus Liebig University, 35392, Giessen, Germany.
| |
Collapse
|
15
|
Stavrou EX, Fang C, Bane KL, Long AT, Naudin C, Kucukal E, Gandhi A, Brett-Morris A, Mumaw MM, Izadmehr S, Merkulova A, Reynolds CC, Alhalabi O, Nayak L, Yu WM, Qu CK, Meyerson HJ, Dubyak GR, Gurkan UA, Nieman MT, Sen Gupta A, Renné T, Schmaier AH. Factor XII and uPAR upregulate neutrophil functions to influence wound healing. J Clin Invest 2018; 128:944-959. [PMID: 29376892 PMCID: PMC5824869 DOI: 10.1172/jci92880] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 12/14/2017] [Indexed: 01/13/2023] Open
Abstract
Coagulation factor XII (FXII) deficiency is associated with decreased neutrophil migration, but the mechanisms remain uncharacterized. Here, we examine how FXII contributes to the inflammatory response. In 2 models of sterile inflammation, FXII-deficient mice (F12-/-) had fewer neutrophils recruited than WT mice. We discovered that neutrophils produced a pool of FXII that is functionally distinct from hepatic-derived FXII and contributes to neutrophil trafficking at sites of inflammation. FXII signals in neutrophils through urokinase plasminogen activator receptor-mediated (uPAR-mediated) Akt2 phosphorylation at S474 (pAktS474). Downstream of pAkt2S474, FXII stimulation of neutrophils upregulated surface expression of αMβ2 integrin, increased intracellular calcium, and promoted extracellular DNA release. The sum of these activities contributed to neutrophil cell adhesion, migration, and release of neutrophil extracellular traps in a process called NETosis. Decreased neutrophil signaling in F12-/- mice resulted in less inflammation and faster wound healing. Targeting hepatic F12 with siRNA did not affect neutrophil migration, whereas WT BM transplanted into F12-/- hosts was sufficient to correct the neutrophil migration defect in F12-/- mice and restore wound inflammation. Importantly, these activities were a zymogen FXII function and independent of FXIIa and contact activation, highlighting that FXII has a sophisticated role in vivo that has not been previously appreciated.
Collapse
Affiliation(s)
- Evi X. Stavrou
- Department of Medicine, Louis Stokes Veterans Administration Medical Center, Cleveland, Ohio, USA
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Chao Fang
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Kara L. Bane
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Andy T. Long
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Clément Naudin
- Clinical Chemistry, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Erdem Kucukal
- Department of Mechanical and Aerospace Engineering, CWRU, Cleveland, Ohio, USA
| | - Agharnan Gandhi
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Adina Brett-Morris
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Michele M. Mumaw
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Sudeh Izadmehr
- Department of Genetics and Genomics Sciences, Graduate School of Biomedical Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Alona Merkulova
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Cindy C. Reynolds
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Omar Alhalabi
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Lalitha Nayak
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
- Department of Medicine, Hematology and Oncology Division, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| | - Wen-Mei Yu
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | - Cheng-Kui Qu
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
| | | | | | - Umut A. Gurkan
- Department of Mechanical and Aerospace Engineering, CWRU, Cleveland, Ohio, USA
| | | | | | - Thomas Renné
- Institute of Clinical Chemistry and Laboratory Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Clinical Chemistry, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Alvin H. Schmaier
- Department of Medicine, Hematology and Oncology Division, Case Western Reserve University (CWRU) School of Medicine, Cleveland, Ohio, USA
- Department of Medicine, Hematology and Oncology Division, University Hospitals Cleveland Medical Center, Cleveland, Ohio, USA
| |
Collapse
|
16
|
FXII promotes proteolytic processing of the LRP1 ectodomain. Biochim Biophys Acta Gen Subj 2017; 1861:2088-2098. [PMID: 28552561 DOI: 10.1016/j.bbagen.2017.05.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Revised: 05/16/2017] [Accepted: 05/24/2017] [Indexed: 11/21/2022]
Abstract
BACKGROUND Factor XII (FXII) is a serine protease that is involved in activation of the intrinsic blood coagulation, the kallikrein-kinin system and the complement cascade. Although the binding of FXII to the cell surface has been demonstrated, the consequence of this event for proteolytic processing of membrane-anchored proteins has never been described. METHODS The effect of FXII on the proteolytic processing of the low-density lipoprotein receptor-related protein 1 (LRP1) ectodomain was tested in human primary lung fibroblasts (hLF), alveolar macrophages (hAM) and in human precision cut lung slices (hPCLS). The identity of generated LRP1 fragments was confirmed by MALDI-TOF-MS. Activity of FXII and gelatinases was measured by S-2302 hydrolysis and zymography, respectively. RESULTS Here, we demonstrate a new function of FXII, namely its ability to process LRP1 extracellular domain. Incubation of hLF, hAM, or hPCLS with FXII resulted in the accumulation of LRP1 ectodomain fragments in conditioned media. This effect was independent of metalloproteases and required FXII proteolytic activity. Binding of FXII to hLF surface induced its conversion to FXIIa and protected FXIIa against inactivation by a broad spectrum of serine protease inhibitors. Preincubation of hLF with collagenase I impaired FXII activation and, in consequence, LRP1 cleavage. FXII-triggered LRP1 processing was associated with the accumulation of gelatinases (MMP-2 and MMP-9) in conditioned media. CONCLUSIONS FXII controls LRP1 levels and function at the plasma membrane by modulating processing of its ectodomain. GENERAL SIGNIFICANCE FXII-dependent proteolytic processing of LRP1 may exacerbate extracellular proteolysis and thus promote pathological tissue remodeling.
Collapse
|
17
|
Sibinska Z, Tian X, Korfei M, Kojonazarov B, Kolb JS, Klepetko W, Kosanovic D, Wygrecka M, Ghofrani HA, Weissmann N, Grimminger F, Seeger W, Guenther A, Schermuly RT. Amplified canonical transforming growth factor-β signalling via heat shock protein 90 in pulmonary fibrosis. Eur Respir J 2017; 49:13993003.01941-2015. [PMID: 28182573 DOI: 10.1183/13993003.01941-2015] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Accepted: 09/17/2016] [Indexed: 12/16/2022]
Abstract
Interstitial lung fibroblast activation coupled with extracellular matrix production is a pathological signature of idiopathic pulmonary fibrosis (IPF), and is governed by transforming growth factor (TGF)-β/Smad signalling. We sought to define the role of heat shock protein (HSP)90 in profibrotic responses in IPF and to determine the therapeutic effects of HSP90 inhibition in a murine model of pulmonary fibrosis.We investigated the effects of HSP90 inhibition in vitro by applying 17-AAG (17-allylamino-17-demethoxygeldanamycin) to lung fibroblasts and A549 cells and in vivo by administering 17-DMAG (17-dimethylaminoethylamino-17-demethoxygeldanamycin) to mice with bleomycin-induced pulmonary fibrosis.HSP90 expression was increased in (myo)fibroblasts from fibrotic human and mouse lungs compared with controls. 17-AAG inhibited TGF-β1-induced extracellular matrix production and transdifferentiation of lung fibroblasts and epithelial-mesenchymal transition of A549 cells. The antifibrotic effects were associated with TGF-β receptor disruption and inhibition of Smad2/3 activation. Co-immunoprecipitation revealed that HSP90β interacted with TGF-β receptor II and stabilised TGF-β receptors. Furthermore, 17-DMAG improved lung function and decreased fibrosis and matrix metalloproteinase activity in the lungs of bleomycin-challenged mice.In conclusion, this is the first study to demonstrate that HSP90 inhibition blocks pulmonary fibroblast activation and ameliorates bleomycin-induced pulmonary fibrosis in mice.
Collapse
Affiliation(s)
- Zaneta Sibinska
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany.,Both authors contributed equally
| | - Xia Tian
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany.,Both authors contributed equally
| | - Martina Korfei
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Baktybek Kojonazarov
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Janina Susanne Kolb
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Walter Klepetko
- Agaplesion Lung Clinic Waldhof Elgershausen, Greifenstein, Germany.,Vienna Medical University, Vienna, Austria
| | - Djuro Kosanovic
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Malgorzata Wygrecka
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany.,Dept of Biochemistry, Faculty of Medicine, University of Giessen, Giessen, Germany
| | - Hossein Ardeschir Ghofrani
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Norbert Weissmann
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Friedrich Grimminger
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Werner Seeger
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany.,Max-Planck-Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Andreas Guenther
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany.,Agaplesion Lung Clinic Waldhof Elgershausen, Greifenstein, Germany.,European IPF Network and European IPF Registry, Giessen, Germany
| | - Ralph T Schermuly
- Universities of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany
| |
Collapse
|
18
|
Pedram A, Razandi M, Narayanan R, Levin ER. Estrogen receptor beta signals to inhibition of cardiac fibrosis. Mol Cell Endocrinol 2016; 434:57-68. [PMID: 27321970 DOI: 10.1016/j.mce.2016.06.018] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 06/14/2016] [Accepted: 06/14/2016] [Indexed: 12/28/2022]
Abstract
Cardiac fibrosis evolves from the cardiac hypertrophic state. In this respect, estrogen and estrogen receptor beta (ERβ) inhibit the effects of cardiac hypertrophic peptides that also stimulate fibrosis. Here we determine details of the anti-fibrotic functions of ERβ. In acutely isolated rat cardiac fibroblasts. E2 or a specific ERβ agonist (βLGND2) blocked angiotensin II (AngII) signaling to fibrosis. This resulted from ERβ activating protein kinase A and AMP kinase, inhibiting both AngII de-phosphorylation of RhoA and the resulting stimulation of Rho kinase. Inhibition of Rho kinase from ERβ signaling resulted in marked decrease of TGFβ expression, connective tissue growth factor production and function, matrix metalloproteinases 2 and 9 expression and activity, and the conversion of fibroblasts to myofibroblasts. Production of collagens I and III were also significantly decreased. Several important aspects were corroborated in-vivo from βLGND2-treated mice that underwent AngII-induced cardiac hypertrophy. Thus, ERβ in cardiac fibroblasts prevents key aspects of cardiac fibrosis development.
Collapse
Affiliation(s)
- Ali Pedram
- Division of Endocrinology, Veterans Affairs Medical Center, Long Beach, Long Beach, CA 90822, United States
| | - Mahnaz Razandi
- Division of Endocrinology, Veterans Affairs Medical Center, Long Beach, Long Beach, CA 90822, United States
| | - Ramesh Narayanan
- Department of Medicine, University of Tennessee, Memphis, TE, 38163, United States
| | - Ellis R Levin
- Division of Endocrinology, Veterans Affairs Medical Center, Long Beach, Long Beach, CA 90822, United States; Departments of Medicine and Biochemistry, University of California, Irvine, Irvine, CA 92717, United States.
| |
Collapse
|
19
|
Yilmaz G, Yilmaz H, Arslan M, Kostakoğlu U, Menteşe A, Karahan SC, Köksal İ. The prognostic significance of serum TGF-β1 levels in patients with Crimean-Congo hemorrhagic fever. J Med Virol 2016; 89:413-416. [PMID: 27467498 DOI: 10.1002/jmv.24647] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/12/2016] [Indexed: 11/08/2022]
Abstract
Crimean-Congo Hemorrhagic Fever (CCHF) may exhibit a mild clinical course or a severe profile like mortal bleeding. The pathogenesis of the illness and reason of bleeding are unclear. However, endothelial injury is a key factor in the pathogenesis of the illness. Transforming growth factor beta (TGF-β) is one of the materials involved in repairing injured endothelium. This is a significant polypeptide released in pretty much all cells and important for the regulation of cellular events, epithelium formation, inflammation, blood coagulation, and collagen synthesis. This study aimed to determine the prognostic significance of serum TGF-β1 levels in CCHF patients. We examined 120 patients hospitalized with CCHF diagnosis and their serum TGF-β1 was investigated, retrospectively. Patients were put into two groups according to the existence of hemorrhage. Forty-four (36.7%) patients had hemorrhage. TGF-β1 levels in patients with bleeding were 5.2 ± 1.8, and 7.1 ± 2.2 for non-bleeding (P < 0.0001). When ROC analysis was performed in patients with CCHF alone in order to identify patients with bleeding, at a TGF-β1 cut-off point of 4.9, AUC was 0.762 (0.675-0.835), sensitivity 59.1%, specificity 85.5%, PPV 70.3%, and NPV 78.3%. We summarize that TGF-β1 level and endothelial dysfunction can be related. A decreased TGF-β1 level is a likely prognostic and diagnostic factor for bleeding in CCHF patients. Therefore, this marker should be considered in the treatment strategy for these patients. J. Med. Virol. 89:413-416, 2017. © 2016 Wiley Periodicals, Inc.
Collapse
Affiliation(s)
- Gürdal Yilmaz
- Department of Infectious Diseases and Clinical Microbiology, Karadeniz Technical University Medical Faculty, Trabzon, Turkey
| | - Hülya Yilmaz
- Department of Medical Biochemistry, Kanuni Training and Research Hospital, Trabzon, Turkey
| | - Mustafa Arslan
- Department of Infectious Diseases and Clinical Microbiology, Amasya University Sabuncuoglu Serefeddin Training and Research Hospital, Amasya, Turkey
| | - Uğur Kostakoğlu
- Department of Infectious Diseases and Clinical Microbiology, 4Recep Tayyip Erdogan University Medical Faculty, Rize, Turkey
| | - Ahmet Menteşe
- Department of Medical Biochemistry, Karadeniz Technical University Medical Faculty, Trabzon, Turkey
| | - Süleyman Caner Karahan
- Department of Medical Biochemistry, Karadeniz Technical University Medical Faculty, Trabzon, Turkey
| | - İftihar Köksal
- Department of Infectious Diseases and Clinical Microbiology, Karadeniz Technical University Medical Faculty, Trabzon, Turkey
| |
Collapse
|
20
|
Geng J, Huang X, Li Y, Xu X, Li S, Jiang D, Liang J, Jiang D, Wang C, Dai H. Down-regulation of USP13 mediates phenotype transformation of fibroblasts in idiopathic pulmonary fibrosis. Respir Res 2015; 16:124. [PMID: 26453058 PMCID: PMC4600336 DOI: 10.1186/s12931-015-0286-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 10/01/2015] [Indexed: 12/12/2022] Open
Abstract
Background Idiopathic pulmonary fibrosis (IPF) is a fatal disease characterized by fibroblastic foci and progressive scarring of the pulmonary parenchyma. IPF fibroblasts display increased proliferation and enhanced migration and invasion, analogous to cancer cells. This transformation-like phenotype of fibroblasts plays an important role in the development of pulmonary fibrosis, but the mechanism for this is not well understood. Methods In this study, we compared gene expression profiles in fibrotic lung tissues from IPF patients and normal lung tissues from patients with primary spontaneous pneumothorax using a cDNA microarray to examine the mechanisms involved in the pathogenesis of IPF. In a cDNA microarray, we found that USP13 was decreased in lung tissues from patients with IPF, which was further confirmed by results from immunohistochemistry and western blot assays. Then, we used RNA interference in MRC-5 cells to inhibit USP13 and evaluated its effects by western blot, real-time RT-PCR, bromodeoxyuridine incorporation, and transwell assays. We also used co-immunoprecipitation and immunofluorescence staining to identify the correlation between USP13 and PTEN in IPF. Results USP13 expression levels were markedly reduced in fibroblastic foci and primary IPF fibroblast lines. The depletion of USP13 resulted in the transformation of fibroblasts into an aggressive phenotype with enhanced proliferative, migratory, and invasive capacities. Additionally, USP13 interacted with PTEN and mediated PTEN ubiquitination and degradation in lung fibroblasts. Conclusions Down-regulation of USP13 mediates PTEN protein loss and fibroblast phenotypic change, and thereby plays a crucial role in IPF pathogenesis. Electronic supplementary material The online version of this article (doi:10.1186/s12931-015-0286-3) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Jing Geng
- Department of Respiratory and Critical Care Medicine, Beijing Key Laboratory of Respiratory and Pulmonary Circulation Disorders, Beijing Chao-Yang Hospital-Beijing Institute of Respiratory Medicine, Capital Medical University, Beijing, 100020, P.R. China.
| | - Xiaoxi Huang
- Department of Medical Research, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, P.R. China.
| | - Ying Li
- Department of Medical Research, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, 100020, P.R. China.
| | - Xuefeng Xu
- Department of Respiratory and Critical Care Medicine, Beijing Key Laboratory of Respiratory and Pulmonary Circulation Disorders, Beijing Chao-Yang Hospital-Beijing Institute of Respiratory Medicine, Capital Medical University, Beijing, 100020, P.R. China. .,National Clinical Research Centre for Respiratory Medicine, Beijing Hospital, Beijing, 100730, P.R. China.
| | - Shuhong Li
- Department of Respiratory and Critical Care Medicine, Beijing Key Laboratory of Respiratory and Pulmonary Circulation Disorders, Beijing Chao-Yang Hospital-Beijing Institute of Respiratory Medicine, Capital Medical University, Beijing, 100020, P.R. China.
| | - Dingyuan Jiang
- Department of Respiratory and Critical Care Medicine, Beijing Key Laboratory of Respiratory and Pulmonary Circulation Disorders, Beijing Chao-Yang Hospital-Beijing Institute of Respiratory Medicine, Capital Medical University, Beijing, 100020, P.R. China.
| | - Jiurong Liang
- Department of Medicine Pulmonary Division and Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA.
| | - Dianhua Jiang
- Department of Medicine Pulmonary Division and Women's Guild Lung Institute, Cedars-Sinai Medical Center, Los Angeles, CA, 90048, USA.
| | - Chen Wang
- Department of Respiratory and Critical Care Medicine, Beijing Key Laboratory of Respiratory and Pulmonary Circulation Disorders, Beijing Chao-Yang Hospital-Beijing Institute of Respiratory Medicine, Capital Medical University, Beijing, 100020, P.R. China. .,National Clinical Research Centre for Respiratory Medicine, Beijing Hospital, Beijing, 100730, P.R. China. .,China-Japan Friendship Hospital, Beijing, 100029, P.R. China.
| | - Huaping Dai
- Department of Respiratory and Critical Care Medicine, Beijing Key Laboratory of Respiratory and Pulmonary Circulation Disorders, Beijing Chao-Yang Hospital-Beijing Institute of Respiratory Medicine, Capital Medical University, Beijing, 100020, P.R. China. .,China-Japan Friendship Hospital, Beijing, 100029, P.R. China.
| |
Collapse
|
21
|
Greer T, Hao L, Nechyporenko A, Lee S, Vezina CM, Ricke WA, Marker PC, Bjorling DE, Bushman W, Li L. Custom 4-Plex DiLeu Isobaric Labels Enable Relative Quantification of Urinary Proteins in Men with Lower Urinary Tract Symptoms (LUTS). PLoS One 2015; 10:e0135415. [PMID: 26267142 PMCID: PMC4534462 DOI: 10.1371/journal.pone.0135415] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Accepted: 07/21/2015] [Indexed: 12/19/2022] Open
Abstract
The relative quantification of proteins using liquid chromatography mass spectrometry (LC-MS) has allowed researchers to compile lists of potential disease markers. These complex quantitative workflows often include isobaric labeling of enzymatically-produced peptides to analyze their relative abundances across multiple samples in a single LC-MS run. Recent efforts by our lab have provided scientists with cost-effective alternatives to expensive commercial labels. Although the quantitative performance of these dimethyl leucine (DiLeu) labels has been reported using known ratios of complex protein and peptide standards, their potential in large-scale proteomics studies using a clinically relevant system has never been investigated. Our work rectifies this oversight by implementing 4-plex DiLeu to quantify proteins in the urine of aging human males who suffer from lower urinary tract symptoms (LUTS). Protein abundances in 25 LUTS and 15 control patients were compared, revealing that of the 836 proteins quantified, 50 were found to be differentially expressed (>20% change) and statistically significant (p-value <0.05). Gene ontology (GO) analysis of the differentiated proteins showed that many were involved in inflammatory responses and implicated in fibrosis. While confirmation of individual protein abundance changes would be required to verify protein expression, this study represents the first report using the custom isobaric label, 4-plex DiLeu, to quantify protein abundances in a clinically relevant system.
Collapse
Affiliation(s)
- Tyler Greer
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Ling Hao
- School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Anatoliy Nechyporenko
- School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Sanghee Lee
- Department of Urology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Chad M. Vezina
- School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Will A. Ricke
- Department of Urology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Paul C. Marker
- School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Dale E. Bjorling
- School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Wade Bushman
- Department of Urology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
| | - Lingjun Li
- Department of Chemistry, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
- School of Pharmacy, University of Wisconsin-Madison, Madison, Wisconsin, United States of America
- * E-mail:
| |
Collapse
|
22
|
Rapamycin increases CCN2 expression of lung fibroblasts via phosphoinositide 3-kinase. J Transl Med 2015; 95:846-59. [PMID: 26192087 DOI: 10.1038/labinvest.2015.68] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2014] [Revised: 03/27/2015] [Accepted: 04/14/2015] [Indexed: 02/03/2023] Open
Abstract
Excessive production of connective tissue growth factor (CTGF, CCN2) and increased motor ability of the activated fibroblast phenotype contribute to the pathogenesis of idiopathic pulmonary fibrosis (IPF). However, molecules and signal pathways regulating CCN2 expression and migration of lung fibroblasts are still elusive. We hypothesize that rapamycin, via binding and blocking mammalian target of rapamycin (mTOR) complex (mTORC), affects CCN2 expression and migration of lung fibroblasts in vitro. Primary normal and fibrotic human lung fibroblasts were isolated from lung tissues of three patients with primary spontaneous pneumothorax and three with IPF. Cells were incubated with regular medium, or medium containing rapamycin, human recombinant transforming growth factor (TGF)-β1, or both. CCN2 and tissue inhibitor of metalloproteinase (TIMP)-1 expression in cells or supernatant was detected. Wound healing and migration assay was used to measure the migratory potential. TGF-β type I receptor (TβRI)/Smad inhibitor, SB431542 and phosphoinositide 3-kinase (PI3K) inhibitor, LY294002 were used to determine rapamycin's mechanism of action. We demonstrated that rapamycin amplified basal or TGF-β1-induced CCN2 mRNA and protein expression in normal or fibrotic fibroblasts by Smad-independent but PI3K-dependent pathway. Additionally, rapamycin also enhanced TIMP-1 expression as indicated by ELISA. However, wound healing and migrating assay showed rapamycin did not affect the mobility of fibroblasts. Collectively, this study implies a significant fibrogenic induction activity of rapamycin by activating AKT and inducing CCN2 expression in vitro and provides the possible mechanisms for the in vivo findings which previously showed no antifibrotic effect of rapamycin on lung fibrosis.
Collapse
|
23
|
Foster MW, Morrison LD, Todd JL, Snyder LD, Thompson JW, Soderblom EJ, Plonk K, Weinhold KJ, Townsend R, Minnich A, Moseley MA. Quantitative proteomics of bronchoalveolar lavage fluid in idiopathic pulmonary fibrosis. J Proteome Res 2015; 14:1238-49. [PMID: 25541672 DOI: 10.1021/pr501149m] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The proteomic analysis of bronchoalveolar lavage fluid (BALF) can give insight into pulmonary disease pathology and response to therapy. Here, we describe the first gel-free quantitative analysis of BALF in idiopathic pulmonary fibrosis (IPF), a chronic and fatal scarring lung disease. We utilized two-dimensional reversed-phase liquid chromatography and ion-mobility-assisted data-independent acquisition (HDMSE) for quantitation of >1000 proteins in immunodepleted BALF from the right middle and lower lobes of normal controls and patients with IPF. Among the analytes that were increased in IPF were well-described mediators of pulmonary fibrosis (osteopontin, MMP7, CXCL7, CCL18), eosinophil- and neutrophil-derived proteins, and proteins associated with fibroblast foci. For additional discovery and targeted validation, BALF was also screened by multiple reaction monitoring (MRM), using the JPT Cytokine SpikeMix library of >400 stable isotope-labeled peptides. A refined MRM assay confirmed the robust expression of osteopontin, and demonstrated, for the first time, upregulation of the pro-fibrotic cytokine, CCL24, in BALF in IPF. These results show the utility of BALF proteomics for the molecular profiling of fibrotic lung diseases and the targeted quantitation of soluble markers of IPF. More generally, this study addresses critical quality control measures that should be widely applicable to BALF profiling in pulmonary disease.
Collapse
Affiliation(s)
- Matthew W Foster
- Pulmonary, Allergy and Critical Care Medicine, ‡Duke Proteomics and Metabolomics Shared Resource, §Department of Surgery, Duke University Medical Center , Durham, North Carolina 27710, United States , and
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Wujak L, Didiasova M, Zakrzewicz D, Frey H, Schaefer L, Wygrecka M. Heparan sulfate proteoglycans mediate factor XIIa binding to the cell surface. J Biol Chem 2015; 290:7027-39. [PMID: 25589788 DOI: 10.1074/jbc.m114.606343] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Hageman factor (FXIIa) initiates the intrinsic coagulation pathway and triggers the kallikrein-kinin and the complement systems. In addition, it functions as a growth factor by expressing promitogenic activities toward several cell types. FXIIa binds to the cell surface via a number of structurally unrelated surface receptors; however, the underlying mechanisms are not yet fully understood. Here, we demonstrate that FXIIa utilizes cell membrane-bound glycosaminoglycans to interact with the cell surface of human lung fibroblasts (HLF). The combination of enzymatic, inhibitory, and overexpression approaches identified a heparan sulfate (HS) component of proteoglycans as an important determinant of the FXIIa binding capacity of HLF. Moreover, cell-free assays and competition experiments revealed preferential binding of FXIIa to HS and heparin over dextran sulfate, dermatan sulfate, and chondroitin sulfate A and C. Finally, we demonstrate that fibroblasts isolated from the lungs of the patients suffering from idiopathic pulmonary fibrosis (IPF) exhibit enhanced FXIIa binding capacity. Increased sulfation of HS resulting from elevated HS 6-O-sulfotransferase-1 expression in IPF HLF accounted, in part, for this phenomenon. Application of RNA interference technology and inhibitors of intracellular sulfation revealed the cooperative action of cell surface-associated HS and urokinase-type plasminogen activator receptor in the accumulation of FXIIa on the cell surface of IPF HLF. Moreover, FXIIa stimulated IPF HLF migration, which was abrogated by pretreatment of cells with heparinase I. Collectively, our study uncovers a novel role of HS-type glycosaminoglycans in a local accumulation of FXIIa on the cell membrane. The enhanced association of FXIIa with IPF HLF suggests its contribution to fibrogenesis.
Collapse
Affiliation(s)
- Lukasz Wujak
- From the Department of Biochemistry, University of Giessen Lung Center, Friedrichstrasse 24, 35392 Giessen, Germany and
| | - Miroslava Didiasova
- From the Department of Biochemistry, University of Giessen Lung Center, Friedrichstrasse 24, 35392 Giessen, Germany and
| | - Dariusz Zakrzewicz
- From the Department of Biochemistry, University of Giessen Lung Center, Friedrichstrasse 24, 35392 Giessen, Germany and
| | - Helena Frey
- the Institute of Pharmacology and Toxicology, Goethe University School of Medicine, University Hospital, 60590 Frankfurt am Main, Germany
| | - Liliana Schaefer
- the Institute of Pharmacology and Toxicology, Goethe University School of Medicine, University Hospital, 60590 Frankfurt am Main, Germany
| | - Malgorzata Wygrecka
- From the Department of Biochemistry, University of Giessen Lung Center, Friedrichstrasse 24, 35392 Giessen, Germany and
| |
Collapse
|
25
|
Gopalakrishnan L, Ramana LN, Sethuraman S, Krishnan UM. Ellagic acid encapsulated chitosan nanoparticles as anti-hemorrhagic agent. Carbohydr Polym 2014; 111:215-21. [PMID: 25037345 DOI: 10.1016/j.carbpol.2014.03.093] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2013] [Revised: 03/26/2014] [Accepted: 03/28/2014] [Indexed: 01/06/2023]
Abstract
Ellagic acid, a naturally occurring polyphenol was encapsulated in chitosan particles prepared by ionotropic gelation and characterized for its physicochemical properties. A maximum encapsulation efficiency of 49% was achieved. The blood clotting time and clot retraction time were calculated for different concentrations of ellagic acid, chitosan and ellagic acid-encapsulated chitosan. A reduction of 34% in the clot time and 16.4% in the retraction time was observed in ellagic acid-encapsulated chitosan when compared with free ellagic acid at concentrations as low as 0.1mg/mL. The physical blend in comparison to free ellagic acid displayed a reduction of 13.8% and 4.6% in the clotting time and retraction time respectively under similar conditions. This suggests that the encapsulation of ellagic acid favors thrombosis due to synergistic action of chitosan and ellagic acid on same molecular targets. This study demonstrates the potential of ellagic acid-chitosan system as an effective anti-hemorrhagic system.
Collapse
Affiliation(s)
- Lalitha Gopalakrishnan
- Centre for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Chemical & Biotechnology, SASTRA University, Thanjavur - 613 401, Tamil Nadu, India
| | - Lakshmi Narashimhan Ramana
- Centre for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Chemical & Biotechnology, SASTRA University, Thanjavur - 613 401, Tamil Nadu, India
| | - Swaminathan Sethuraman
- Centre for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Chemical & Biotechnology, SASTRA University, Thanjavur - 613 401, Tamil Nadu, India
| | - Uma Maheswari Krishnan
- Centre for Nanotechnology & Advanced Biomaterials (CeNTAB), School of Chemical & Biotechnology, SASTRA University, Thanjavur - 613 401, Tamil Nadu, India.
| |
Collapse
|
26
|
Baker ES, Burnum-Johnson KE, Jacobs JM, Diamond DL, Brown RN, Ibrahim YM, Orton DJ, Piehowski PD, Purdy DE, Moore RJ, Danielson WF, Monroe ME, Crowell KL, Slysz GW, Gritsenko MA, Sandoval JD, Lamarche BL, Matzke MM, Webb-Robertson BJM, Simons BC, McMahon BJ, Bhattacharya R, Perkins JD, Carithers RL, Strom S, Self SG, Katze MG, Anderson GA, Smith RD. Advancing the high throughput identification of liver fibrosis protein signatures using multiplexed ion mobility spectrometry. Mol Cell Proteomics 2014; 13:1119-27. [PMID: 24403597 DOI: 10.1074/mcp.m113.034595] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Rapid diagnosis of disease states using less invasive, safer, and more clinically acceptable approaches than presently employed is a crucial direction for the field of medicine. While MS-based proteomics approaches have attempted to meet these objectives, challenges such as the enormous dynamic range of protein concentrations in clinically relevant biofluid samples coupled with the need to address human biodiversity have slowed their employment. Herein, we report on the use of a new instrumental platform that addresses these challenges by coupling technical advances in rapid gas phase multiplexed ion mobility spectrometry separations with liquid chromatography and MS to dramatically increase measurement sensitivity and throughput, further enabling future high throughput MS-based clinical applications. An initial application of the liquid chromatography--ion mobility spectrometry-MS platform analyzing blood serum samples from 60 postliver transplant patients with recurrent fibrosis progression and 60 nontransplant patients illustrates its potential utility for disease characterization.
Collapse
Affiliation(s)
- Erin Shammel Baker
- Biological Sciences Division and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
27
|
Yaping Z, Ying W, Luqin D, Ning T, Xuemei A, Xixian Y. Mechanism of interleukin-1β-induced proliferation in rat hepatic stellate cells from different levels of signal transduction. APMIS 2013; 122:392-8. [PMID: 23992404 DOI: 10.1111/apm.12155] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 07/04/2013] [Indexed: 12/18/2022]
Abstract
Hepatic stellate cells (HSCs) are the major producers of collagen in the liver. Their conversion from resting cells to proliferative, contractile, and activated cells is a critical step leading to liver fibrosis that is characterized by the deposition of excessive extracellular matrix. Interleukin-1 (IL-1) may play a role in maintaining HSC in a proliferative state that is responsible for hepatic fibrogenesis. The aim of this study was to study the roles of the IL-1 type I receptor (IL-1R1), c-Jun N-terminal kinase (JNK), and activation protein-1 (AP-1) in IL-1β-mediated proliferation in rat HSCs. We showed that IL-1β can upregulate proliferation in rat HSCs; however, inhibition of the JNK pathway could inhibit HSCs proliferation. Furthermore, IL-1β activated IL-1R1 expression, the JNK signaling pathway, and AP-1 activity in a time-dependent manner in rat HSCs. These data demonstrate that IL-1β could promote the proliferation of rat HSCs and that the IL-1R1, JNK, and AP-1 pathways were involved in this process. In summary, IL-1β-induced proliferation is possibly mediated by the IL-1R1, JNK, and AP-1 pathways in rat HSCs. Therefore, drugs that block these pathways may inhibit the proliferation of HSCs and suppress liver fibrosis.
Collapse
Affiliation(s)
- Zhang Yaping
- Department of Pediatrics, Third Hospital of Hebei Medical University
| | | | | | | | | | | |
Collapse
|
28
|
Matsuzaki K. Smad phospho-isoforms direct context-dependent TGF-β signaling. Cytokine Growth Factor Rev 2013; 24:385-99. [PMID: 23871609 DOI: 10.1016/j.cytogfr.2013.06.002] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 06/12/2013] [Indexed: 02/06/2023]
Abstract
Better understanding of TGF-β signaling has deepened our appreciation of normal epithelial cell homeostasis and its dysfunction in such human disorders as cancer and fibrosis. Smad proteins, which convey signals from TGF-β receptors to the nucleus, possess intermediate linker regions connecting Mad homology domains. Membrane-bound, cytoplasmic, and nuclear protein kinases differentially phosphorylate Smad2 and Smad3 to create C-tail (C), the linker (L), or dually (L/C) phosphorylated (p, phospho-) isoforms. According to domain-specific phosphorylation, distinct transcriptional responses, and selective metabolism, Smad phospho-isoform pathways can be grouped into 4 types: cytostatic pSmad3C signaling, mitogenic pSmad3L (Ser-213) signaling, invasive/fibrogenic pSmad2L (Ser-245/250/255)/C or pSmad3L (Ser-204)/C signaling, and mitogenic/migratory pSmad2/3L (Thr-220/179)/C signaling. We outline how responses to TGF-β change through the multiple Smad phospho-isoforms as normal epithelial cells mature from stem cells through progenitors to differentiated cells, and further reflect upon how constitutive Ras-activating mutants favor the Smad phospho-isoform pathway promoting tumor progression. Finally, clinical analyses of reversible Smad phospho-isoform signaling during human carcinogenesis could assess effectiveness of interventions aimed at reducing human cancer risk. Spatiotemporally separate, functionally different Smad phospho-isoforms have been identified in specific cells and tissues, answering long-standing questions about context-dependent TGF-β signaling.
Collapse
Affiliation(s)
- Koichi Matsuzaki
- Department of Gastroenterology and Hepatology, Kansai Medical University, 10-15 Fumizonocho, Moriguchi, Osaka 570-8506, Japan.
| |
Collapse
|
29
|
Wygrecka M, Dahal BK, Kosanovic D, Petersen F, Taborski B, von Gerlach S, Didiasova M, Zakrzewicz D, Preissner KT, Schermuly RT, Markart P. Mast Cells and Fibroblasts Work in Concert to Aggravate Pulmonary Fibrosis. THE AMERICAN JOURNAL OF PATHOLOGY 2013; 182:2094-108. [DOI: 10.1016/j.ajpath.2013.02.013] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Revised: 01/10/2013] [Accepted: 02/04/2013] [Indexed: 02/07/2023]
|
30
|
Wang Q, Chen W, Xu X, Li B, He W, Padilla MT, Jang JH, Nyunoya T, Amin S, Wang X, Lin Y. RIP1 potentiates BPDE-induced transformation in human bronchial epithelial cells through catalase-mediated suppression of excessive reactive oxygen species. Carcinogenesis 2013; 34:2119-28. [PMID: 23633517 DOI: 10.1093/carcin/bgt143] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Cell survival signaling is important for the malignant phenotypes of cancer cells. Although the role of receptor-interacting protein 1 (RIP1) in cell survival signaling is well documented, whether RIP1 is directly involved in cancer development has never been studied. In this report, we found that RIP1 expression is substantially increased in human non-small cell lung cancer and mouse lung tumor tissues. RIP1 expression was remarkably increased in cigarette smoke-exposed mouse lung. In human bronchial epithelial cells (HBECs), RIP1 was significantly induced by cigarette smoke extract or benzo[a]pyrene diol epoxide (BPDE), the active form of the tobacco-specific carcinogen benzo(a)pyrene. In RIP1 knockdown HBECs, BPDE-induced cytotoxicity was significantly increased, which was associated with induction of cellular reactive oxygen species (ROS) and activation of mitogen-activated protein kinases (MAPKs), including c-jun N-terminal kinase (JNK), extracellular signal-regulated kinase (ERK) and p38. Scavenging ROS suppressed BPDE-induced MAPK activation and inhibiting ROS or MAPKs substantially blocked BPDE-induced cytotoxicity, suggesting ROS-mediated MAPK activation is involved in BPDE-induced cell death. The ROS-reducing enzyme catalase is destabilized in an ERK- and JNK-dependent manner in RIP1 knockdown HBECs and application of catalase effectively blocked BPDE-induced ROS accumulation and cytotoxicity. Importantly, BPDE-induced transformation of HBECs was significantly reduced when RIP1 expression was suppressed. Altogether, these results strongly suggest an oncogenic role for RIP1, which promotes malignant transformation through protecting DNA-damaged cells against carcinogen-induced cytotoxicity associated with excessive ROS production.
Collapse
Affiliation(s)
- Qiong Wang
- Laboratory of Molecular and Translational Medicine, West China Second University Hospital, Sichuan University, Chengdu 610041, China
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
31
|
Activin, neutrophils, and inflammation: just coincidence? Semin Immunopathol 2013; 35:481-99. [PMID: 23385857 PMCID: PMC7101603 DOI: 10.1007/s00281-013-0365-9] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 01/17/2013] [Indexed: 01/18/2023]
Abstract
During the 26 years that have elapsed since its discovery, activin-A, a member of the transforming growth factor β super-family originally discovered from its capacity to stimulate follicle-stimulating hormone production by cultured pituitary gonadotropes, has been established as a key regulator of various fundamental biological processes, such as development, homeostasis, inflammation, and tissue remodeling. Deregulated expression of activin-A has been observed in several human diseases characterized by an immuno-inflammatory and/or tissue remodeling component in their pathophysiology. Various cell types have been recognized as sources of activin-A, and plentiful, occasionally contradicting, functions have been described mainly by in vitro studies. Not surprisingly, both harmful and protective roles have been postulated for activin-A in the context of several disorders. Recent findings have further expanded the functional repertoire of this molecule demonstrating that its ectopic overexpression in mouse airways can cause pathology that simulates faithfully human acute respiratory distress syndrome, a disorder characterized by strong involvement of neutrophils. This finding when considered together with the recent discovery that neutrophils constitute an important source of activin-A in vivo and earlier observations of upregulated activin-A expression in diseases characterized by strong activation of neutrophils may collectively imply a more intimate link between activin-A expression and neutrophil reactivity. In this review, we provide an outline of the functional repertoire of activin-A and suggest that this growth factor functions as a guardian of homeostasis, a modulator of immunity and an orchestrator of tissue repair activities. In this context, a relationship between activin-A and neutrophils may be anything but coincidental.
Collapse
|
32
|
Wygrecka M, Zakrzewicz D, Taborski B, Didiasova M, Kwapiszewska G, Preissner KT, Markart P. TGF-β1 Induces Tissue Factor Expression in Human Lung Fibroblasts in a PI3K/JNK/Akt-Dependent and AP-1–Dependent Manner. Am J Respir Cell Mol Biol 2012; 47:614-27. [DOI: 10.1165/rcmb.2012-0097oc] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
33
|
Protein Arginine Methyltransferases (PRMTs): promising targets for the treatment of pulmonary disorders. Int J Mol Sci 2012. [PMID: 23202904 PMCID: PMC3497278 DOI: 10.3390/ijms131012383] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Protein arginine methylation is a novel posttranslational modification that plays a pivotal role in a variety of intracellular events, such as signal transduction, protein-protein interaction and transcriptional regulation, either by the direct regulation of protein function or by metabolic products originating from protein arginine methylation that influence nitric oxide (NO)-dependent processes. A growing body of evidence suggests that both mechanisms are implicated in cardiovascular and pulmonary diseases. This review will present and discuss recent research on PRMTs and the methylation of non-histone proteins and its consequences for the pathogenesis of various lung disorders, including lung cancer, pulmonary fibrosis, pulmonary hypertension, chronic obstructive pulmonary disease and asthma. This article will also highlight novel directions for possible future investigations to evaluate the functional contribution of arginine methylation in lung homeostasis and disease.
Collapse
|
34
|
Ueberham U, Hilbrich I, Ueberham E, Rohn S, Glöckner P, Dietrich K, Brückner MK, Arendt T. Transcriptional control of cell cycle-dependent kinase 4 by Smad proteins--implications for Alzheimer's disease. Neurobiol Aging 2012; 33:2827-40. [PMID: 22418736 DOI: 10.1016/j.neurobiolaging.2012.01.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2011] [Revised: 01/23/2012] [Accepted: 01/25/2012] [Indexed: 01/07/2023]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by deregulation of neuronal cell cycle and differentiation control eventually resulting in cell death. During brain development, neuronal differentiation is regulated by Smad proteins, which are elements of the canonical transforming growth factor β (TGF-β) signaling pathway, linking receptor activation to gene expression. In the normal adult brain, Smad proteins are constitutively phosphorylated and predominantly localized in neuronal nuclei. Under neurodegenerative conditions such as AD, the subcellular localization of their phosphorylated forms is heavily disturbed, raising the question of whether a nuclear Smad deficiency in neurons might contribute to a loss of neuronal differentiation control and subsequent cell cycle re-entry. Here, we show by luciferase reporter assays, electromobility shift, and RNA interference (RNAi) technique a direct binding of Smad proteins to the CDK4 promoter inducing transcriptional inhibition of cell cycle-dependent kinase 4 (Cdk4). Mimicking the neuronal deficiency of Smad proteins observed in AD in cell culture by RNAi results in elevation of Cdk4 and retardation of neurite outgrowth. The results identify Smad proteins as direct transcriptional regulators of Cdk4 and add further evidence to a Smad-dependent deregulation of Cdk4 in AD, giving rise to neuronal dedifferentiation and cell death.
Collapse
Affiliation(s)
- Uwe Ueberham
- Department for Molecular and Cellular Mechanisms of Neurodegeneration, Universität Leipzig, Paul Flechsig Institute of Brain Research, Leipzig, D-04109, Jahnallee 59, Germany.
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Iwayama H, Sakamoto T, Nawa A, Ueda N. Crosstalk between Smad and Mitogen-Activated Protein Kinases for the Regulation of Apoptosis in Cyclosporine A- Induced Renal Tubular Injury. NEPHRON EXTRA 2011; 1:178-89. [PMID: 22470391 PMCID: PMC3290860 DOI: 10.1159/000333014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Background/Aims It remains elusive whether there is a crosstalk between Smad and mitogen-activated protein kinases (MAPKs) and whether it regulates cyclosporine A (CyA)-induced apoptosis in renal proximal tubular cells (RPTCs). Methods The effect of CyA on nuclear translocation of Smad2/3 and MAPKs (measured by Western blotting or immunofluorescence) and apoptosis (determined by Hoechst 33258 staining) was examined in HK-2 cells. Results CyA induced apoptosis at 24 h and nuclear translocation of phosphorylated (p)-Smad2/3 at 3 h, which was continued till 24 h. CyA enhanced the expression of p-ERK at 1 h, which was continued till 24 h, and of p-p38MAPK at 1–6 h, which returned to control level at 12 h. CyA did not affect JNK. An inhibitor of ERK, PD98059, prevented CyA-induced nuclear translocation of Smad2/3 and apoptosis. An inhibitor of p38MAPK, SB202190, deteriorated CyA-induced nuclear translocation of p-Smad2/3. Epidermal growth factor (EGF) activated ERK and p38MAPK but not JNK. EGF-induced activation of MAPKs ameliorated CyA-induced nuclear translocation of p-Smad2/3 and apoptosis. Inhibition of p38MAPK but not of ERK abolished the protective effect of EGF on CyA-induced nuclear translocation of p-Smad2/3 and apoptosis. Conclusion Crosstalk between R-Smad and p38MAPK/ERK, but not JNK differentially regulates apoptosis in CyA-induced RPTC injury.
Collapse
Affiliation(s)
- Hideyuki Iwayama
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | | | | | | |
Collapse
|
36
|
Wygrecka M, Wilhelm J, Jablonska E, Zakrzewicz D, Preissner KT, Seeger W, Guenther A, Markart P. Shedding of Low-Density Lipoprotein Receptor–related Protein-1 in Acute Respiratory Distress Syndrome. Am J Respir Crit Care Med 2011; 184:438-48. [DOI: 10.1164/rccm.201009-1422oc] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
37
|
Wygrecka M, Kwapiszewska G, Jablonska E, Gerlach SV, Henneke I, Zakrzewicz D, Guenther A, Preissner KT, Markart P. Role of Protease-activated Receptor-2 in Idiopathic Pulmonary Fibrosis. Am J Respir Crit Care Med 2011; 183:1703-14. [DOI: 10.1164/rccm.201009-1479oc] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
|
38
|
Avcuoglu S, Wygrecka M, Marsh LM, Günther A, Seeger W, Weissmann N, Fink L, Morty RE, Kwapiszewska G. Neurotrophic tyrosine kinase receptor B/neurotrophin 4 signaling axis is perturbed in clinical and experimental pulmonary fibrosis. Am J Respir Cell Mol Biol 2011; 45:768-80. [PMID: 21330466 DOI: 10.1165/rcmb.2010-0195oc] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The neurotrophins (NTs) are emerging as exciting new participants in normal lung physiology, as well as in several pathological processes in diseased lungs. In this study, the increased expression of NT4/5 and of its cognate receptor, the neurotrophic tyrosine kinase receptor Type 2 (TrkB), was observed in human lungs explanted from patients with idiopathic pulmonary fibrosis (IPF), and in lungs from mice with bleomycin-induced pulmonary fibrosis. The expression of NT4/5 and TrkB localized to hyperplastic alveolar Type II cells (ATII) and fibroblastic foci in affected lungs. Increased concentrations of NT4/5 and TrkB were evident in ATII isolated from the lungs of bleomycin-treated mice. Primary ATII were shown to secrete NT4/5 into the cell culture medium. The profibrotic cytokine transforming growth factor-β1, stimulated TrkB, but not NT4/5 gene expression, suggesting that perturbed profibrotic growth factor signaling in affected lungs may drive the expression of TrkB. NT4/5 enhanced the proliferation of ATII through a TrkB/extracellular-regulated kinase/protein kinase B pathway, and could also drive the proliferation of primary human and murine lung fibroblasts, through TrkB-dependent and protein kinase B-dependent pathways. Taken together, these data suggest that a dysregulated TrkB/NT4/5 axis may contribute to several of the pathological lesions associated with pulmonary fibrosis, including ATII hyperplasia and the proliferation of fibroblasts, and we would add IPF to the list of disorders, such as pain and cancer, for which therapeutic targeting of the TrkB/neurotrophin axis has been proposed for further investigation.
Collapse
Affiliation(s)
- Sibel Avcuoglu
- Department of Internal Medicine, University of Giessen Lung Center, Justus Liebig University, Klinikstrasse 36, D-35392 Giessen, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Pedram A, Razandi M, O'Mahony F, Lubahn D, Levin ER. Estrogen receptor-beta prevents cardiac fibrosis. Mol Endocrinol 2010; 24:2152-65. [PMID: 20810711 DOI: 10.1210/me.2010-0154] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Development of cardiac fibrosis portends the transition and deterioration from hypertrophy to dilation and heart failure. Here we examined how estrogen blocks this important development. Angiotensin II (AngII) and endothelin-1 induce cardiac hypertrophy and fibrosis in humans. and we find that these agents directly stimulate the transition of the cardiac fibroblast to a myofibroblast. AngII and endothelin-1 stimulated TGFβ1 synthesis in the fibroblast, an inducer of fibrosis that signaled via c-jun kinase to Sma- and Mad-related protein 3 phosphorylation and nuclear translocation in myofibroblasts. As a result, mesenchymal proteins fibronectin and vimentin were produced, as were collagens I and III, the major forms found in fibrotic hearts. 17β-Estradiol (E2) or dipropylnitrile, an estrogen receptor (ER)β agonist, comparably blocked all these events, reversed by estrogen receptor (ER)β small interfering RNA. E2 and dipropylnitrile signaling through cAMP and protein kinase A prevented myofibroblast formation and blocked activation of c-jun kinase and important events of fibrosis. In the hearts of ovariectomized female mice, cardiac hypertrophy and fibrosis were induced by AngII infusion and prevented by E2 administration to wild type but not ERβ knockout rodents. Our results establish the cardiac fibroblast as an important target for hypertrophic/fibrosis-inducing peptides the actions of which were mitigated by E2/ERβ acting in these stromal cells.
Collapse
Affiliation(s)
- Ali Pedram
- Medical Service (111-I), Department of Veterans Affairs Medical Center, 5901 East 7th Street, Long Beach, California 90822, USA
| | | | | | | | | |
Collapse
|
40
|
Velden JLJVD, Alcorn JF, Guala AS, Badura ECHL, Janssen-Heininger YMW. c-Jun N-terminal kinase 1 promotes transforming growth factor-β1-induced epithelial-to-mesenchymal transition via control of linker phosphorylation and transcriptional activity of Smad3. Am J Respir Cell Mol Biol 2010; 44:571-81. [PMID: 20581097 DOI: 10.1165/rcmb.2009-0282oc] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
Transforming growth factor (TGF)-β1 is a key mediator of lung remodeling and fibrosis. Epithelial cells are both a source of and can respond to TGF-β1 with epithelial-to-mesenchymal transition (EMT). We recently determined that TGF-β1-induced EMT in lung epithelial cells requires the presence of c-Jun N-terminal kinase (JNK) 1. Because TGF-β1 signals via Smad complexes, the goal of the present study was to determine the impact of JNK1 on phosphorylation of Smad3 and Smad3-dependent transcriptional responses in lung epithelial cells. Evaluation of JNK1-deficient lung epithelial cells demonstrated that TGF-β1-induced terminal phosphorylation of Smad3 was similar, whereas phosphorylation of mitogen-activated protein kinase sites in the linker regions of Smad3 was diminished, in JNK1-deficient cells compared with wild-type cells. In comparison to wild-type Smad3, expression of a mutant Smad3 in which linker mitogen-activated protein kinase sites were ablated caused a marked attenuation in JNK1 or TGF-β1-induced Smad-binding element transcriptional activity, and expression of plasminogen activator inhibitor-1, fibronectin-1, high-mobility group A2, CArG box-binding factor-A, and fibroblast-specific protein-1, genes critical in the process of EMT. JNK1 enhanced the interaction between Smad3 and Smad4, which depended on linker phosphorylation of Smad3. Conversely, Smad3 with phosphomimetic mutations in the linker domain further enhanced EMT-related genes and proteins, even in the absence of JNK1. Finally, we demonstrated a TGF-β1-induced interaction between Smad3 and JNK1. Collectively, these results demonstrate that Smad3 phosphorylation in the linker region and Smad transcriptional activity are directly or indirectly controlled by JNK1, and provide a putative mechanism whereby JNK1 promotes TGF-β1-induced EMT.
Collapse
Affiliation(s)
- Jos L J van der Velden
- Department of Pathology, Health Sciences Research Facility, University of Vermont, Burlington, VT 05405, USA
| | | | | | | | | |
Collapse
|