1
|
Effects of Chemical Structures Interacting with Amine Oxidases on Glucose, Lipid and Hydrogen Peroxide Handling by Human Adipocytes. Molecules 2022; 27:molecules27196224. [PMID: 36234761 PMCID: PMC9571511 DOI: 10.3390/molecules27196224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/07/2022] [Accepted: 09/19/2022] [Indexed: 11/26/2022] Open
Abstract
Benzylamine is a natural molecule present in food and edible plants, capable of activating hexose uptake and inhibiting lipolysis in human fat cells. These effects are dependent on its oxidation by amine oxidases present in adipocytes, and on the subsequent hydrogen peroxide production, known to exhibit insulin-like actions. Virtually, other substrates interacting with such hydrogen peroxide-releasing enzymes potentially can modulate lipid accumulation in adipose tissue. Inhibition of such enzymes has also been reported to influence lipid deposition. We have therefore studied in human adipocytes the lipolytic and lipogenic activities of pharmacological entities designed to interact with amine oxidases highly expressed in this cell type: the semicarbazide-sensitive amine oxidase (SSAO also known as PrAO or VAP-1) and the monoamine oxidases (MAO). The results showed that SZV-2016 and SZV-2017 behaved as better substrates than benzylamine, releasing hydrogen peroxide once oxidized, and reproduced or even exceeded its insulin-like metabolic effects in fat cells. Additionally, several novel SSAO inhibitors, such as SZV-2007 and SZV-1398, have been evidenced and shown to inhibit benzylamine metabolic actions. Taken as a whole, our findings reinforce the list of molecules that influence the regulation of triacylglycerol assembly/breakdown, at least in vitro in human adipocytes. The novel compounds deserve deeper investigation of their mechanisms of interaction with SSAO or MAO, and constitute potential candidates for therapeutic use in obesity and diabetes.
Collapse
|
2
|
Systematic Review: Targeted Molecular Imaging of Angiogenesis and Its Mediators in Rheumatoid Arthritis. Int J Mol Sci 2022; 23:ijms23137071. [PMID: 35806074 PMCID: PMC9267012 DOI: 10.3390/ijms23137071] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/23/2022] [Accepted: 06/23/2022] [Indexed: 12/14/2022] Open
Abstract
Extensive angiogenesis is a characteristic feature in the synovial tissue of rheumatoid arthritis (RA) from a very early stage of the disease onward and constitutes a crucial event for the development of the proliferative synovium. This process is markedly intensified in patients with prolonged disease duration, high disease activity, disease severity, and significant inflammatory cell infiltration. Angiogenesis is therefore an interesting target for the development of new therapeutic approaches as well as disease monitoring strategies in RA. To this end, nuclear imaging modalities represent valuable non-invasive tools that can selectively target molecular markers of angiogenesis and accurately and quantitatively track molecular changes in multiple joints simultaneously. This systematic review summarizes the imaging markers used for single photon emission computed tomography (SPECT) and/or positron emission tomography (PET) approaches, targeting pathways and mediators involved in synovial neo-angiogenesis in RA.
Collapse
|
3
|
High doses of tyramine stimulate glucose transport in human fat cells. J Physiol Biochem 2022; 78:543-556. [DOI: 10.1007/s13105-021-00864-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 12/09/2021] [Indexed: 01/13/2023]
|
4
|
Vakal S, Jalkanen S, Dahlström KM, Salminen TA. Human Copper-Containing Amine Oxidases in Drug Design and Development. Molecules 2020; 25:molecules25061293. [PMID: 32178384 PMCID: PMC7144023 DOI: 10.3390/molecules25061293] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/06/2020] [Accepted: 03/10/2020] [Indexed: 12/28/2022] Open
Abstract
Two members of the copper-containing amine oxidase family are physiologically important proteins: (1) Diamine oxidase (hDAO; AOC1) with a preference for diamines is involved in degradation of histamine and (2) Vascular adhesion protein-1 (hVAP-1; AOC3) with a preference for monoamines is a multifunctional cell-surface receptor and an enzyme. hVAP-1-targeted inhibitors are designed to treat inflammatory diseases and cancer, whereas the off-target binding of the designed inhibitors to hDAO might result in adverse drug reactions. The X-ray structures for both human enzymes are solved and provide the basis for computer-aided inhibitor design, which has been reported by several research groups. Although the putative off-target effect of hDAO is less studied, computational methods could be easily utilized to avoid the binding of VAP-1-targeted inhibitors to hDAO. The choice of the model organism for preclinical testing of hVAP-1 inhibitors is not either trivial due to species-specific binding properties of designed inhibitors and different repertoire of copper-containing amine oxidase family members in mammalian species. Thus, the facts that should be considered in hVAP-1-targeted inhibitor design are discussed in light of the applied structural bioinformatics and structural biology approaches.
Collapse
Affiliation(s)
- Serhii Vakal
- Structural Bioinformatics Laboratory, Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, FI-20520 Turku, Finland; (S.V.); (K.M.D.)
| | - Sirpa Jalkanen
- MediCity Research Laboratory, University of Turku, Tykistökatu 6A, FI-20520 Turku, Finland;
| | - Käthe M. Dahlström
- Structural Bioinformatics Laboratory, Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, FI-20520 Turku, Finland; (S.V.); (K.M.D.)
| | - Tiina A. Salminen
- Structural Bioinformatics Laboratory, Biochemistry, Faculty of Science and Engineering, Åbo Akademi University, Tykistökatu 6A, FI-20520 Turku, Finland; (S.V.); (K.M.D.)
- Correspondence: ; Tel.: +358-40-515-1201
| |
Collapse
|
5
|
Liu X, Song H, Zhai X, Tung CH, Wang W. Cobalt-catalyzed regioselective hydrohydrazination of epoxides. Org Biomol Chem 2020; 18:1572-1576. [PMID: 32039418 DOI: 10.1039/d0ob00037j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using an air-stable cobalt catalyst [Cp*Co(1,2-Ph2PC6H4S)(NCMe)]BF4 (1, Cp* = Me5C5-), we have achieved catalytic regioselective hydrohydrazination of epoxides to 1,1-hydrazinoalcohols in an atom-economical manner. The catalysis involves a cobalt-hydrazine intermediate, in which the NH2 group of the hydrazine binds to the metal center, inhibiting its nucleophilic reactivity and allowing the NH group to participate in the regioselective hydrohydrazination.
Collapse
Affiliation(s)
- Xiangyu Liu
- Key Lab of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China.
| | - Heng Song
- School of Environment and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu, China
| | - Xiaofang Zhai
- Key Lab of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China.
| | - Chen-Ho Tung
- Key Lab of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China.
| | - Wenguang Wang
- Key Lab of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China.
| |
Collapse
|
6
|
Vascular Adhesion Protein-1 (VAP-1) as Predictor of Radiographic Severity in Symptomatic Knee Osteoarthritis in the New York University Cohort. Int J Mol Sci 2019; 20:ijms20112642. [PMID: 31146362 PMCID: PMC6600374 DOI: 10.3390/ijms20112642] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/12/2019] [Accepted: 05/24/2019] [Indexed: 01/02/2023] Open
Abstract
Background: To investigate the expression of vascular adhesion protein-1 (VAP-1) in joint tissues and serum in symptomatic knee osteoarthritis (SKOA) patients and examine whether VAP-1 levels predict increased risk of disease severity in a cross-sectional study. Methods: Baseline VAP-1 expression and soluble VAP-1 (sVAP-1) levels were assessed in the synovium synovial fluid and in the serum in cohorts of patients with tibiofemoral medial knee OA and healthy subjects. Standardized fixed-flexion poster anterior knee radiographs scored for Kellgren–Lawrence (KL) grade (0–4) and medial joint space width (JSW). KL1/2 vs. KL3/4 scores defined early and advanced radiographic severity, respectively. Biochemical markers assessed in serum or synovial fluids (SF) comprised sVAP-1, interleukin 1 receptor antagonist (IL-1Ra), interleukin 6 (IL-6), soluble receptor for advanced glycation end-products (sRAGE), C-C motif chemokine ligand 2 (CCL2), C-C motif chemokine ligand 4 (CCL4), cluster of differentiation 163 (CD163), high sensitivity C-reactive protein (hsCRP), and matrix metalloproteinases (MMPs)-1,-3,-9. Associations between biomarkers and radiographic severity KL1/2 vs. KL3/4 (logistic regression controlling for covariates) and pain (Spearman correlation) were evaluated. Results: Elevated levels of sVAP-1 observed in OA synovial fluid and VAP-1 expression in synovium based on immunohistochemical, microarray, and real-time quantitative polymerase chain reaction (qRT-PCR) analyses. However, serum sVAP-1 levels in OA patients were lower than in controls and inversely correlated with pain and inflammation markers (hsCRP and soluble RAGE). Soluble VAP-1 levels in serum were also lower in radiographically advanced (KL3/4) compared with early KL1/2 knee SKOA patients. Conclusion: Local (synovial fluid) semicarbazide-sensitive amine oxidase (SSAO)/sVAP-1 levels were elevated in OA and correlated with radiographic severity. However, systemic (serum) sVAP-1 levels were lower in SKOA patients than normal and inversely correlated with pain and inflammation markers. Serum sVAP-1 levels were higher in early (KL1/2) compared with advanced (KL3/4) SKOA patients.
Collapse
|
7
|
Abstract
Significance: Vascular adhesion protein-1 (VAP-1) is an ectoenzyme that oxidates primary amines in a reaction producing also hydrogen peroxide. VAP-1 on the blood vessel endothelium regulates leukocyte extravasation from the blood into tissues under physiological and pathological conditions. Recent Advances: Inhibition of VAP-1 by neutralizing antibodies and by several novel small-molecule enzyme inhibitors interferes with leukocyte trafficking and alleviates inflammation in many experimental models. Targeting of VAP-1 also shows beneficial effects in several other diseases, such as ischemia/reperfusion, fibrosis, and cancer. Moreover, soluble VAP-1 levels may serve as a new prognostic biomarker in selected diseases. Critical Issues: Understanding the contribution of the enzyme activity-independent and enzyme activity-dependent functions, which often appear to be mediated by the hydrogen peroxide production, in the VAP-1 biology will be crucial. Similarly, there is a pressing need to understand which of the VAP-1 functions are regulated through the modulation of leukocyte trafficking, and what is the role of VAP-1 synthesized in adipose and smooth muscle cells. Future Directions: The specificity and selectivity of new VAP-1 inhibitors, and their value in animal models under therapeutic settings need to be addressed. Results from several programs studying the therapeutic potential of VAP-1 inhibition, which now are in clinical trials, will reveal the relevance of this amine oxidase in humans.
Collapse
Affiliation(s)
- Marko Salmi
- 1 MediCity , Turku, Finland .,2 Institute of Biomedicine, University of Turku, Turku, Finland
| | - Sirpa Jalkanen
- 1 MediCity , Turku, Finland .,2 Institute of Biomedicine, University of Turku, Turku, Finland
| |
Collapse
|
8
|
Kalani A, Tabibian JH, Lindor KD. Emerging therapeutic targets for primary sclerosing cholangitis. Expert Opin Orphan Drugs 2018. [DOI: 10.1080/21678707.2018.1490643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Amir Kalani
- Vatche and Tamar Manoukian Division of Digestive Diseases, UCLA Gastroenterology Fellowship Training Program, Los Angeles, CA, USA
| | - James H. Tabibian
- Division of Gastroenterology, Department of Medicine, Olive View-UCLA Medical Center, Sylmar, CA, USA
| | - Keith D. Lindor
- Professor of Medicine and Senior Advisor to the Provost, College of Health Solutions, Arizona State University, USA
| |
Collapse
|
9
|
Horváth Á, Tékus V, Bencze N, Szentes N, Scheich B, Bölcskei K, Szőke É, Mócsai A, Tóth-Sarudy É, Mátyus P, Pintér E, Helyes Z. Analgesic effects of the novel semicarbazide-sensitive amine oxidase inhibitor SZV 1287 in mouse pain models with neuropathic mechanisms: Involvement of transient receptor potential vanilloid 1 and ankyrin 1 receptors. Pharmacol Res 2018; 131:231-243. [DOI: 10.1016/j.phrs.2018.02.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 02/07/2018] [Accepted: 02/07/2018] [Indexed: 12/11/2022]
|
10
|
Arndtz K, Corrigan M, Rowe A, Kirkham A, Barton D, Fox RP, Llewellyn L, Athwal A, Wilkhu M, Chen YY, Weston C, Desai A, Adams DH, Hirschfield GM. Investigating the safety and activity of the use of BTT1023 (Timolumab), in the treatment of patients with primary sclerosing cholangitis (BUTEO): A single-arm, two-stage, open-label, multi-centre, phase II clinical trial protocol. BMJ Open 2017; 7:e015081. [PMID: 28674140 PMCID: PMC5734279 DOI: 10.1136/bmjopen-2016-015081] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 03/29/2017] [Accepted: 05/17/2017] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION Primary sclerosing cholangitis (PSC) is a progressive inflammatory liver disease characterised by relentless liver fibrosis and a high unmet need for new therapies. Preventing fibrosis represents an important area of interest in the development of vital new drugs. Vascular adhesion protein-1 (VAP-1) drives inflammation in liver disease, and provision of an antibody against VAP-1 blunts fibrosis in murine models of liver injury. METHODS AND ANALYSIS BUTEO is a single-arm, two-stage, open-label, multi-centre, phase II clinical trial. Up to 59 patients will receive treatment with anti-VAP monoclonal antibody, BTT1023, over a 78-day treatment period. Adults with PSC and a serum alkaline phosphatase (ALP) of at least 1.5 times the upper limit of normal will be included. Our primary outcome measure is a reduction in ALP by >25% from baseline to Day 99. Secondary outcome measures include safety and tolerability, changes pre therapy/post therapy in circulating serum VAP-1 as well as imaging findings. The first patient participant was recruited on 08 September 2015. ETHICS AND DISSEMINATION This protocol has been approved by the Research Ethics Committee (REC, reference 14/EM/1272). The first REC approval date was 06 January 2015 with three subsequent approved amendments. This article refers to protocol V3.0, dated 16 March 2016. Results will be disseminated via peer-reviewed publication and presentation at international conferences. TRIAL REGISTRATION The trial is registered with the European Medicines agency (EudraCT: 2014-002393-37), the National Institute for Health Research (Portfolio ID: 18051) and ISRCTN: 11233255. The clinicaltrials.gov identifier is NCT02239211. Pre-results.
Collapse
Affiliation(s)
- Katherine Arndtz
- Centre for Rare Diseases, Institute of Translational Medicine, Birmingham Health Partners, University Hospitals Birmingham, Birmingham, UK
- NIHR Birmingham Biomedical Research Centre, Centre for Liver Research, University of Birmingham, Birmingham, UK
| | - Margaret Corrigan
- Centre for Rare Diseases, Institute of Translational Medicine, Birmingham Health Partners, University Hospitals Birmingham, Birmingham, UK
- NIHR Birmingham Biomedical Research Centre, Centre for Liver Research, University of Birmingham, Birmingham, UK
| | - Anna Rowe
- NIHR Birmingham Biomedical Research Centre, Clinical Trials Group (D3B Team), CRUK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - Amanda Kirkham
- Department of Statistics, CRUK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - Darren Barton
- NIHR Birmingham Biomedical Research Centre, Clinical Trials Group (D3B Team), CRUK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - Richard P Fox
- Department of Statistics, CRUK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - Laura Llewellyn
- Early Drug Development Team, CRUK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - Amrita Athwal
- NIHR Birmingham Biomedical Research Centre, Clinical Trials Group (D3B Team), CRUK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - Manpreet Wilkhu
- NIHR Birmingham Biomedical Research Centre, Clinical Trials Group (D3B Team), CRUK Clinical Trials Unit, University of Birmingham, Birmingham, UK
| | - Yung-Yi Chen
- Centre for Rare Diseases, Institute of Translational Medicine, Birmingham Health Partners, University Hospitals Birmingham, Birmingham, UK
- NIHR Birmingham Biomedical Research Centre, Centre for Liver Research, University of Birmingham, Birmingham, UK
| | - Chris Weston
- Centre for Rare Diseases, Institute of Translational Medicine, Birmingham Health Partners, University Hospitals Birmingham, Birmingham, UK
- NIHR Birmingham Biomedical Research Centre, Centre for Liver Research, University of Birmingham, Birmingham, UK
| | - Amisha Desai
- Pharmacy, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Birmingham, UK
| | - David H Adams
- Centre for Rare Diseases, Institute of Translational Medicine, Birmingham Health Partners, University Hospitals Birmingham, Birmingham, UK
- NIHR Birmingham Biomedical Research Centre, Centre for Liver Research, University of Birmingham, Birmingham, UK
| | - Gideon M Hirschfield
- Centre for Rare Diseases, Institute of Translational Medicine, Birmingham Health Partners, University Hospitals Birmingham, Birmingham, UK
- NIHR Birmingham Biomedical Research Centre, Centre for Liver Research, University of Birmingham, Birmingham, UK
| |
Collapse
|
11
|
Zhang Y, Yi W, Yao J, Yu X, Qian C, Hu Z. Hypoxia serves a key function in the upregulated expression of vascular adhesion protein‑1 in vitro and in a rat model of hemorrhagic shock. Mol Med Rep 2017. [PMID: 28627649 PMCID: PMC5562078 DOI: 10.3892/mmr.2017.6727] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Hemorrhagic shock following major trauma results in mortality, but the function of vascular adhesion protein-1 (VAP-1), implicated in intracranial hemorrhage, remains unknown. This study aimed to determine whether expression of the AOC3 gene and its encoded protein, VAP-1, is altered by hypoxia. Rat hepatic sinusoidal endothelial cells (RHSECs) and rat intestinal microvascular endothelial cells (RIMECs) were transduced with a viral vector carrying AOC3, and AOC3 mRNA expression levels were measured by reverse transcription-quantitative polymerase chain reaction. VAP-1 protein expression levels were measured by western blot analysis and compared between normoxic and hypoxic conditions. Following this, AOC3 mRNA and VAP-1 protein expression levels in hepatic and intestinal tissues were assessed in a rat model of hemorrhagic shock with or without fluid resuscitation; and serum semicarbazide-sensitive amine oxidase (SSAO) activity was measured by fluorometric assays. The effects of 2-bromoethylamine (2-BEA) on AOC3/VAP-1 levels and 24 h survival were investigated. AOC3 mRNA and VAP-1 protein levels were increased in RHSECs and RIMECs by hypoxia, and in hepatic and intestinal tissues from rats following hemorrhagic shock. Hypoxia increased serum SSAO activity in these animals. 2-BEA reduced AOC3 mRNA and VAP-1 protein levels in hepatic and intestinal tissues from rats following hemorrhagic shock, and appeared to improve survival in animals not receiving resuscitation following hemorrhagic shock. In conclusion, hemorrhagic shock upregulates AOC3/VAP-1 expressions, and this potentially occurs via hypoxia. Therefore, inhibition of VAP-1 may be beneficial in the setting of hemorrhagic shock. Further studies are required to confirm these findings and to establish whether VAP-1 may be a valid target for the development of novel therapies for hemorrhagic shock.
Collapse
Affiliation(s)
- Yuxing Zhang
- Department of General Surgery, Navy General Hospital, Beijing 100048, P.R. China
| | - Wei Yi
- Department of General Surgery, China People's Liberation Army No. 94 Hospital, Nanchang, Jiangxi 330002, P.R. China
| | - Jun Yao
- Department of General Surgery, Shanghai Changzheng Hospital, Shanghai 200003, P.R. China
| | - Xiaojun Yu
- Department of Gastroenterological Surgery, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Cheng Qian
- Department of General Surgery, Huzhou Maternity & Child Care Hospital, Huzhou, Zhejiang 313000, P.R. China
| | - Zhiqian Hu
- Department of General Surgery, Shanghai Changzheng Hospital, Shanghai 200003, P.R. China
| |
Collapse
|
12
|
Marttila-Ichihara F, Elima K, Auvinen K, Veres TZ, Rantakari P, Weston C, Miyasaka M, Adams D, Jalkanen S, Salmi M. Amine oxidase activity regulates the development of pulmonary fibrosis. FASEB J 2017; 31:2477-2491. [PMID: 28251930 DOI: 10.1096/fj.201600935r] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 02/07/2017] [Indexed: 12/19/2022]
Abstract
In pulmonary fibrosis, an inflammatory reaction and differentiation of myofibroblasts culminate in pathologic deposition of collagen. Amine oxidase copper containing-3 (AOC3) is a cell-surface-expressed oxidase that regulates leukocyte extravasation. Here we analyzed the potential role of AOC3 using gene-modified and inhibitor-treated mice in a bleomycin-induced pulmonary fibrosis model. Inflammation and fibrosis of lungs were assessed by histologic, flow cytometric, and quantitative PCR analysis. AOC3-deficient mice showed a 30-50% reduction in fibrosis, collagen synthesis, numbers of myofibroblasts, and accumulation of CD4+ lymphocytes, NK T cells, macrophages, and type 2 innate lymphoid cells compared with wild-type control mice. AOC3-knock-in mice, which express a catalytically inactive form of AOC3, were also protected from lung fibrosis. In wild-type mice, a small-molecule AOC3 inhibitor treatment reduced leukocyte infiltration, myofibroblast differentiation, and fibrotic injury both in prophylactic and early therapeutic settings by about 50% but was unable to reverse the established fibrosis. AOC3 was also induced in myofibroblasts in human idiopathic pulmonary fibrosis. Thus, the oxidase activity of AOC3 contributes to the development of lung fibrosis mainly by regulating the accumulation of pathogenic leukocyte subtypes, which drive the fibrotic response.-Marttila-Ichihara, F., Elima, K., Auvinen, K., Veres, T. Z., Rantakari, P., Weston, C., Miyasaka, M., Adams, D., Jalkanen, S., Salmi, M. Amine oxidase activity regulates the development of pulmonary fibrosis.
Collapse
Affiliation(s)
| | - Kati Elima
- MediCity Research Laboratory, University of Turku, Turku, Finland.,Department of Medical Biochemistry and Genetics, University of Turku, Turku, Finland
| | - Kaisa Auvinen
- MediCity Research Laboratory, University of Turku, Turku, Finland
| | - Tibor Z Veres
- MediCity Research Laboratory, University of Turku, Turku, Finland
| | - Pia Rantakari
- MediCity Research Laboratory, University of Turku, Turku, Finland
| | - Christopher Weston
- Centre for Liver Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Unit, University of Birmingham, Birmingham, United Kingdom; and
| | - Masayuki Miyasaka
- MediCity Research Laboratory, University of Turku, Turku, Finland.,World Premier International (WPI) Immunology Frontier Research Center, Osaka University, Japan
| | - David Adams
- Centre for Liver Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Unit, University of Birmingham, Birmingham, United Kingdom; and
| | - Sirpa Jalkanen
- MediCity Research Laboratory, University of Turku, Turku, Finland.,Department of Medical Microbiology and Immunology, University of Turku, Turku, Finland
| | - Marko Salmi
- MediCity Research Laboratory, University of Turku, Turku, Finland.,Department of Medical Microbiology and Immunology, University of Turku, Turku, Finland
| |
Collapse
|
13
|
Yamaki S, Suzuki D, Fujiyasu J, Neya M, Nagashima A, Kondo M, Akabane T, Kadono K, Moritomo A, Yoshihara K. Synthesis and structure activity relationships of glycine amide derivatives as novel Vascular Adhesion Protein-1 inhibitors. Bioorg Med Chem 2016; 25:187-201. [PMID: 27810440 DOI: 10.1016/j.bmc.2016.10.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 10/18/2016] [Accepted: 10/19/2016] [Indexed: 12/14/2022]
Abstract
Vascular Adhesion Protein-1 (VAP-1) is a promising therapeutic target for the treatment of several inflammatory-related diseases including diabetic microvascular complication. We identified glycine amide derivative 3 as a novel structure with moderate VAP-1 inhibitory activity. Structure-activity relationship studies of glycine amide derivatives revealed that the tertiary amide moiety is important for stability in rat blood and that the position of substituents on the left phenyl ring plays an important role in VAP-1 inhibitory activity. We also found that low TPSA values and weak basicity are both important for high PAMPA values for glycine amide derivatives. These findings led to the identification of a series of orally active compounds with enhanced VAP-1 inhibitory activity. Of these compounds, 4g exhibited the most potent ex vivo efficacy, with plasma VAP-1 inhibitory activity of 60% after oral administration at 1mg/kg.
Collapse
Affiliation(s)
- Susumu Yamaki
- Drug Discovery Research, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan.
| | - Daisuke Suzuki
- Drug Discovery Research, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Jiro Fujiyasu
- Drug Discovery Research, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Masahiro Neya
- Drug Discovery Research, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Akira Nagashima
- Drug Discovery Research, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Mitsuhiro Kondo
- Drug Discovery Research, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Takafumi Akabane
- Drug Discovery Research, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Keitaro Kadono
- Drug Discovery Research, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Ayako Moritomo
- Drug Discovery Research, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| | - Kosei Yoshihara
- Drug Discovery Research, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan
| |
Collapse
|
14
|
Expression of the semicarbazide-sensitive amine oxidase in articular cartilage: its role in terminal differentiation of chondrocytes in rat and human. Osteoarthritis Cartilage 2016; 24:1223-34. [PMID: 26851450 DOI: 10.1016/j.joca.2016.01.340] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 01/15/2016] [Accepted: 01/20/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Semicarbazide-sensitive amine oxidase (SSAO) catalyzes the oxidation of primary amines into ammonia and reactive species (hydrogen peroxide, aldehydes). It is highly expressed in mammalian tissues, especially in vascular smooth muscle cells and adipocytes, where it plays a role in cell differentiation and glucose transport. The study aims at characterizing the expression and the activity of SSAO in rat and human articular cartilage of the knee, and to investigate its potential role in chondrocyte terminal differentiation. DESIGN SSAO expression was examined by immunohistochemistry and western blot. Enzyme activity was measured using radiolabeled benzylamine as a substrate. Primary cell cultures of rat chondrocytes were treated for 21 days by a specific SSAO inhibitor, LJP 1586. Terminal chondrocyte differentiation markers were quantified by RT-qPCR. The basal and IL1β-stimulated glucose transport was monitored by the entrance of (3)[H]2-deoxyglucose in chondrocytes. RESULTS SSAO was expressed in chondrocytes of rat and human articular cartilage. SSAO expression was significantly enhanced during the hypertrophic differentiation of chondrocytes characterized by an increase in MMP13 and in alkaline phosphatase (ALP) expressions. SSAO inhibition delayed the late stage of chondrocyte differentiation without cell survival alteration and diminished the basal and IL1β-stimulated glucose transport. Interestingly, SSAO activity was strongly increased in human osteoarthritic cartilage. CONCLUSIONS SSAO was expressed as an active form in rat and human cartilage. The results suggest the involvement of SSAO in rat chondrocyte terminal differentiation via a modulation of the glucose transport. In man, the increased SSAO activity detected in osteoarthritic patients may trigger hypertrophy and cartilage degeneration.
Collapse
|
15
|
Primary Amine Oxidase of Escherichia coli Is a Metabolic Enzyme that Can Use a Human Leukocyte Molecule as a Substrate. PLoS One 2015; 10:e0142367. [PMID: 26556595 PMCID: PMC4640556 DOI: 10.1371/journal.pone.0142367] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 10/21/2015] [Indexed: 12/17/2022] Open
Abstract
Escherichia coli amine oxidase (ECAO), encoded by the tynA gene, catalyzes the oxidative deamination of aromatic amines into aldehydes through a well-established mechanism, but its exact biological role is unknown. We investigated the role of ECAO by screening environmental and human isolates for tynA and characterizing a tynA-deletion strain using microarray analysis and biochemical studies. The presence of tynA did not correlate with pathogenicity. In tynA+ Escherichia coli strains, ECAO enabled bacterial growth in phenylethylamine, and the resultant H2O2 was released into the growth medium. Some aminoglycoside antibiotics inhibited the enzymatic activity of ECAO, which could affect the growth of tynA+ bacteria. Our results suggest that tynA is a reserve gene used under stringent environmental conditions in which ECAO may, due to its production of H2O2, provide a growth advantage over other bacteria that are unable to manage high levels of this oxidant. In addition, ECAO, which resembles the human homolog hAOC3, is able to process an unknown substrate on human leukocytes.
Collapse
|
16
|
Pannecoeck R, Serruys D, Benmeridja L, Delanghe JR, van Geel N, Speeckaert R, Speeckaert MM. Vascular adhesion protein-1: Role in human pathology and application as a biomarker. Crit Rev Clin Lab Sci 2015; 52:284-300. [PMID: 26287391 DOI: 10.3109/10408363.2015.1050714] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Vascular adhesion protein-1 (VAP-1) is a member of the copper-containing amine oxidase/semicarbazide-sensitive amine oxidase (AOC/SSAO) enzyme family. SSAO enzymes catalyze oxidative deamination of primary amines, which results in the production of the corresponding aldehyde, hydrogen peroxide and ammonium. VAP-1 is continuously expressed as a transmembrane glycoprotein in the vascular wall during development and facilitates the accumulation of inflammatory cells into the inflamed environment in concert with other leukocyte adhesion molecules. The soluble form of VAP-1 is released into the circulation mainly from vascular endothelial cells. Over- and under-expression of sVAP-1 result in alterations of the reported reaction product levels, which are involved in the pathogenesis of multiple human diseases. The combination of enzymatic and adhesion capacities as well as its strong association with inflammatory pathologies makes VAP-1 an interesting therapeutic target for drug discovery. In this article, we will review the general characteristics and biological functions of VAP-1, focusing on its important role as a prognostic biomarker in human pathologies. In addition, the potential therapeutic application of VAP-1 inhibitors will be discussed.
Collapse
Affiliation(s)
| | | | | | | | - Nanja van Geel
- c Department of Dermatology , Ghent University Hospital , Gent , Belgium
| | | | | |
Collapse
|
17
|
Abstract
INTRODUCTION Osteoarthritis (OA) is the most prevailing form of joint disease, with symptoms affecting 10 - 12% of the adult population with a projection of a 50% increase in prevalence in the next two decades. The disease characteristics are defined by articular cartilage damage, low-grade synovial inflammation and hypertrophic bone changes, leading to pain and functional deterioration. To date, available pain treatments are limited in their efficacy and have associated toxicities. No structural disease modification agents have been approved by regulatory agencies for this indication. AREAS COVERED We reviewed drugs in Phase II - III for OA pain and joint structure modification. Different aspects of structure modification are divided into targets of inflammatory pathway, cartilage catabolism and anabolism, and subchondral bone remodeling. EXPERT OPINION Further insight into the pathophysiology of the disease will allow for development of novel target classes focusing on the link between symptomatology and structural changes. Given the complexity of OA, one single therapy is unlikely to be universally and uniformly effective. Promising therapies are under development, but there are obstacles in the translation of treatment from preclinical models and trial designs need to be cognizant of the complex reasons for previous trial failures.
Collapse
Affiliation(s)
- Shirley Pei-Chun Yu
- a 1 Royal North Shore Hospital, Department of Rheumatology , St. Leonards, NSW 2065, Sydney, Australia
| | | |
Collapse
|
18
|
Ectoenzymes in leukocyte migration and their therapeutic potential. Semin Immunopathol 2014; 36:163-76. [PMID: 24638888 DOI: 10.1007/s00281-014-0417-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 01/19/2014] [Indexed: 02/07/2023]
Abstract
Inflammation causes or accompanies a huge variety of diseases. Migration of leukocytes from the blood into the tissues, in the tissues, and from the tissues to lymphatic vasculature is crucial in the formation and resolution of inflammatory infiltrates. In addition to classical adhesion and activation molecules, several other molecules are known to contribute to the leukocyte traffic. Several of them belong to ectoenzymes, which are cell surface molecules having catalytically active sites outside the cell. We will review here how several ectoenzymes present on leukocytes or endothelial cell surface function as adhesins and/or modulate the extravasation cascade through their enzymatic activities. Moreover, their therapeutic potential as immune modulators in different experimental inflammation models and in clinical trials will be discussed.
Collapse
|
19
|
Wong MYW, Saad S, Pollock C, Wong MG. Semicarbazide-sensitive amine oxidase and kidney disease. Am J Physiol Renal Physiol 2013; 305:F1637-44. [PMID: 24173357 DOI: 10.1152/ajprenal.00416.2013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
With better understanding of the molecular mechanisms underpinning chronic kidney disease, the roles of inflammation and fibrosis are becoming increasingly inseparable. The progression of renal disease is characterized by pathomorphological changes that consist of early inflammatory responses followed by tubulointerstitial fibrosis, tubular atrophy, and glomerular and vascular sclerosis. Currently available therapies that reduce hypertension, proteinuria, hyperglycemia, and interruption of the renin-angiotensin-aldosterone system are at best only partially effective. Hence, there remains a need to explore agents targeting nonrenin-angiotensin-aldosterone system pathways. In this review, we discuss mechanistic aspects in the physiological and pathological role of semicarbazide-sensitive amine oxidase, a protein enzyme involved in cellular trafficking and inflammation, with respect to the kidney. We explore the evidence for the use of semicarbazide-sensitive amine oxidase inhibitors as potential agents in renal fibrosis to delay the onset and progression of chronic kidney disease.
Collapse
Affiliation(s)
- May Y W Wong
- Kolling Institute of Medical Research, Level 7 Kolling Bldg., Royal North Shore Hospital, St Leonards 2065, NSW, Australia.
| | | | | | | |
Collapse
|
20
|
Autio A, Vainio PJ, Suilamo S, Mali A, Vainio J, Saanijoki T, Noponen T, Ahtinen H, Luoto P, Teräs M, Jalkanen S, Roivainen A. Preclinical evaluation of a radioiodinated fully human antibody for in vivo imaging of vascular adhesion protein-1-positive vasculature in inflammation. J Nucl Med 2013; 54:1315-9. [PMID: 23847292 DOI: 10.2967/jnumed.113.120295] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
UNLABELLED Vascular adhesion protein-1 (VAP-1) is an endothelial glycoprotein mediating leukocyte trafficking from blood to sites of inflammation. BTT-1023 is a fully human monoclonal anti-VAP-1 antibody developed to treat inflammatory diseases. In this study, we preclinically evaluated radioiodinated BTT-1023 for inflammation imaging. METHODS Rabbits were intravenously injected with radioiodinated BTT-1023. Distribution and pharmacokinetics were assessed by PET/CT up to 72 h after injection. Human radiation dose estimates for (124)I-BTT-1023 were extrapolated. Additionally, rabbits with chemically induced synovitis were imaged with (123)I-BTT-1023 SPECT/CT. RESULTS Radioiodinated BTT-1023 cleared rapidly from blood circulation and distributed to liver and thyroid. Inflamed joints were delineated by SPECT/CT. The estimated human effective dose due to (124)I-BTT-1023 was 0.55 mSv/MBq, if blockage of thyroid uptake is assumed. CONCLUSION The radioiodinated BTT-1023 was able to detect mild inflammation in vivo. Clinical (124)I-BTT-1023 PET studies with injected radioactivity of 0.5-0.7 MBq/kg may be justified.
Collapse
Affiliation(s)
- Anu Autio
- Turku PET Centre, University of Turku and Turku University Hospital, Turku, Finland
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Inoue T, Morita M, Tojo T, Nagashima A, Moritomo A, Miyake H. Novel 1H-imidazol-2-amine derivatives as potent and orally active vascular adhesion protein-1 (VAP-1) inhibitors for diabetic macular edema treatment. Bioorg Med Chem 2013; 21:3873-81. [PMID: 23664164 DOI: 10.1016/j.bmc.2013.04.011] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 04/02/2013] [Accepted: 04/04/2013] [Indexed: 10/26/2022]
Abstract
Novel thiazole derivatives were synthesized and evaluated as vascular adhesion protein-1 (VAP-1) inhibitors. Although we previously identified a compound (2) with potent VAP-1 inhibitory activity in rats, the human activity was relatively weak. Here, to improve the human VAP-1 inhibitory activity of compound 2, we first evaluated the structure-activity relationships of guanidine bioisosteres as simple small molecules and identified a 1H-benzimidazol-2-amine (5) with potent activity compared to phenylguanidine (1). Based on the structure of compound 5, we synthesized a highly potent VAP-1 inhibitor (37b; human IC50=0.019 μM, rat IC50=0.0051 μM). Orally administered compound 37b also markedly inhibited ocular permeability in streptozotocin-induced diabetic rats after oral administration, suggesting it is a promising compound for the treatment of diabetic macular edema.
Collapse
Affiliation(s)
- Takayuki Inoue
- Drug Discovery Research, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan.
| | | | | | | | | | | |
Collapse
|
22
|
Ferjančič Š, Gil-Bernabé AM, Hill SA, Allen PD, Richardson P, Sparey T, Savory E, McGuffog J, Muschel RJ. VCAM-1 and VAP-1 recruit myeloid cells that promote pulmonary metastasis in mice. Blood 2013; 121:3289-97. [PMID: 23407548 DOI: 10.1182/blood-2012-08-449819] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Pulmonary metastasis is a frequent cause of poor outcome in cancer patients. The formation of pulmonary metastasis is greatly facilitated by recruitment of myeloid cells, which are crucial for tumor cell survival and extravasation. During inflammation, homing of myeloid cells is mediated by endothelial activation, raising the question of a potential role for endothelial activation in myeloid cell recruitment during pulmonary metastasis. Here, we show that metastatic tumor cell attachment causes the induction of the endothelial activation markers vascular cell adhesion molecule-1 (VCAM-1) and vascular adhesion protein-1 (VAP-1). Induction of VCAM-1 is dependent on tumor cell-clot formation, decreasing upon induction of tissue factor pathway inhibitor or treatment with hirudin. Furthermore, inhibition of endothelial activation with a VCAM-1 blocking antibody or a VAP-1 small molecule inhibitor leads to reduced myeloid cell recruitment and diminished tumor cell survival and metastasis without affecting tumor cell adhesion. Simultaneous inhibition of VCAM-1 and VAP-1 does not result in further reduction in myeloid cell recruitment and tumor cell survival, suggesting that both act through closely related mechanisms. These results establish VCAM-1 and VAP-1 as mediators of myeloid cell recruitment in metastasis and identify VAP-1 as a potential target for therapeutic intervention to combat early metastasis.
Collapse
Affiliation(s)
- Špela Ferjančič
- Department of Oncology, Gray Institute for Radiation Oncology and Biology, University of Oxford, Oxford OX3 7DQ, United Kingdom
| | | | | | | | | | | | | | | | | |
Collapse
|
23
|
Inoue T, Morita M, Tojo T, Nagashima A, Moritomo A, Imai K, Miyake H. Synthesis and SAR study of new thiazole derivatives as vascular adhesion protein-1 (VAP-1) inhibitors for the treatment of diabetic macular edema: part 2. Bioorg Med Chem 2013; 21:2478-94. [PMID: 23540955 DOI: 10.1016/j.bmc.2013.02.048] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 02/27/2013] [Accepted: 02/28/2013] [Indexed: 10/27/2022]
Abstract
Novel thiazole derivatives were synthesized and evaluated as vascular adhesion protein-1 (VAP-1) inhibitors. Although our previous compound 1 showed potent VAP-1 inhibitory activity, the activity differed between humans and rats. This issue was overcome by a hybrid design using human VAP-1 specific inhibitor 2, which was found by high-throughput screening (HTS), a docking study of a human VAP-1 homology model, and an analysis of sequence information for humans and rats. As a result, we identified compound 35c, which showed strong VAP-1 inhibitory activity (human IC(50) of 20 nM; rat IC(50) of 72 nM) and significant inhibitory effects in the ex vivo test.
Collapse
Affiliation(s)
- Takayuki Inoue
- Drug Discovery Research, Astellas Pharma Inc., 21 Miyukigaoka, Tsukuba, Ibaraki 305-8585, Japan.
| | | | | | | | | | | | | |
Collapse
|
24
|
Inoue T, Morita M, Tojo T, Yoshihara K, Nagashima A, Moritomo A, Ohkubo M, Miyake H. Synthesis and SAR study of new thiazole derivatives as vascular adhesion protein-1 (VAP-1) inhibitors for the treatment of diabetic macular edema. Bioorg Med Chem 2013; 21:1219-33. [DOI: 10.1016/j.bmc.2012.12.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Revised: 12/19/2012] [Accepted: 12/20/2012] [Indexed: 11/25/2022]
|
25
|
The amine oxidase inhibitor phenelzine limits lipogenesis in adipocytes without inhibiting insulin action on glucose uptake. J Neural Transm (Vienna) 2012; 120:997-1003. [DOI: 10.1007/s00702-012-0951-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2012] [Accepted: 12/04/2012] [Indexed: 12/22/2022]
|
26
|
Roivainen A, Jalkanen S, Nanni C. Gallium-labelled peptides for imaging of inflammation. Eur J Nucl Med Mol Imaging 2012; 39 Suppl 1:S68-77. [PMID: 22388620 DOI: 10.1007/s00259-011-1987-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Inflammation plays a major role in the development of many diseases. This review article summarizes recent research in the field of in vivo imaging of inflammation. Novel methodologies using PET with (68)Ga peptides targeting, for example, vascular adhesion protein 1 are discussed.
Collapse
Affiliation(s)
- Anne Roivainen
- Turku PET Centre, University of Turku and Turku University Hospital, Kiinamyllynkatu 4-8, FI-20521 Turku, Finland.
| | | | | |
Collapse
|
27
|
|
28
|
Dunkel P, Balogh B, Meleddu R, Maccioni E, Gyires K, Mátyus P. Semicarbazide-sensitive amine oxidase/vascular adhesion protein-1: a patent survey. Expert Opin Ther Pat 2011; 21:1453-71. [PMID: 21675926 DOI: 10.1517/13543776.2011.594040] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Vascular adhesion protein-1 (VAP-1)/semicarbazide-sensitive amine oxidase (SSAO) is an adhesion protein involved in leukocyte trafficking and inflammatory processes, with a special amine oxidase activity. Inhibitors have been mainly developed for treating chronic inflammatory disorders. The utility of inhibitors as antiangiogenic agents in ophthalmological and oncological diseases is currently under evaluation. SSAO substrates may mimic several insulin effects, although their utility for the treatment of diabetes is still far from being fully understood. AREAS COVERED This paper reviews the patent literature of SSAO/VAP-1 inhibitors and substrates, for the period of 1990 - 2010. The current stage of SSAO/VAP-1-interacting agents published in patents is described, along with their chemical structures and pharmacological uses. EXPERT OPINION SSAO/VAP-1 is a promising anti-inflammatory target. Another important field for therapeutic application of these inhibitors may be ophthalmology, due to their antiangiogenic effects. SSAO substrates might also be of therapeutic value in the treatment of diabetes; however, more extensive research has to be undertaken to validate this approach.
Collapse
Affiliation(s)
- Petra Dunkel
- Semmelweis University, Department of Organic Chemistry , Hőgyes Endre utca 7, 1092 Budapest , Hungary
| | | | | | | | | | | |
Collapse
|
29
|
Salmi M, Jalkanen S. Homing-associated molecules CD73 and VAP-1 as targets to prevent harmful inflammations and cancer spread. FEBS Lett 2011; 585:1543-50. [DOI: 10.1016/j.febslet.2011.04.033] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2011] [Revised: 04/13/2011] [Accepted: 04/14/2011] [Indexed: 01/01/2023]
|
30
|
Nurminen EM, Pihlavisto M, Lázár L, Pentikäinen U, Fülöp F, Pentikäinen OT. Novel Hydrazine Molecules as Tools To Understand the Flexibility of Vascular Adhesion Protein-1 Ligand-Binding Site: Toward More Selective Inhibitors. J Med Chem 2011; 54:2143-54. [DOI: 10.1021/jm200059p] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Elisa M. Nurminen
- Department of Biological and Environmental Science and Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Marjo Pihlavisto
- BioTie Therapies Corporation, Tykistökatu 6, FI-20520 Turku, Finland
| | - László Lázár
- Institute of Pharmaceutical Chemistry, University of Szeged, H-6720 Eotvos 6, Szeged, Hungary
| | - Ulla Pentikäinen
- Department of Biological and Environmental Science and Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry, University of Szeged, H-6720 Eotvos 6, Szeged, Hungary
| | - Olli T. Pentikäinen
- Department of Biological and Environmental Science and Nanoscience Center, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| |
Collapse
|
31
|
Nurminen EM, Pihlavisto M, Lázár L, Szakonyi Z, Pentikäinen U, Fülöp F, Pentikäinen OT. Synthesis, in vitro activity, and three-dimensional quantitative structure-activity relationship of novel hydrazine inhibitors of human vascular adhesion protein-1. J Med Chem 2010; 53:6301-15. [PMID: 20690686 DOI: 10.1021/jm100337z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Vascular adhesion protein-1 (VAP-1) belongs to the semicarbazide-sensitive amine oxidases (SSAOs) that convert amines into aldehydes. SSAOs are distinct from the mammalian monoamine oxidases (MAOs), but their substrate specificities are partly overlapping. VAP-1 has been proposed as a target for anti-inflammatory drug therapy because of its role in leukocyte adhesion to endothelium. Here, we describe the synthesis and in vitro activities of novel series of VAP-1 selective inhibitors. In addition, the molecular dynamics simulations performed for VAP-1 reveal that the movements of Met211, Ser496, and especially Leu469 can enlarge the ligand-binding pocket, allowing larger ligands than those seen in the crystal structures to bind. Combining the data from molecular dynamics simulations, docking, and in vitro measurements, the three-dimensional quantitative structure-activity relationship (3D QSAR) models for VAP-1 (q(2)(LOO): 0.636; r(2): 0.828) and MAOs (q(2)(LOO): 0.749, r(2): 0.840) were built and employed in the development of selective VAP-1 inhibitors.
Collapse
Affiliation(s)
- Elisa M Nurminen
- Department of Biological and Environmental Science & Nanoscience Center, PO Box 35, FI-40014 University of Jyvaskyla, Finland
| | | | | | | | | | | | | |
Collapse
|
32
|
Aspinall AI, Curbishley SM, Lalor PF, Weston CJ, Blahova M, Liaskou E, Adams RM, Holt AP, Adams DH. CX(3)CR1 and vascular adhesion protein-1-dependent recruitment of CD16(+) monocytes across human liver sinusoidal endothelium. Hepatology 2010; 51:2030-9. [PMID: 20512991 PMCID: PMC2919204 DOI: 10.1002/hep.23591] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
UNLABELLED The liver contains macrophages and myeloid dendritic cells (mDCs) that are critical for the regulation of hepatic inflammation. Most hepatic macrophages and mDCs are derived from monocytes recruited from the blood through poorly understood interactions with hepatic sinusoidal endothelial cells (HSECs). Human CD16(+) monocytes are thought to contain the precursor populations for tissue macrophages and mDCs. We report that CD16(+) cells localize to areas of active inflammation and fibrosis in chronic inflammatory liver disease and that a unique combination of cell surface receptors promotes the transendothelial migration of CD16(+) monocytes through human HSECs under physiological flow. CX(3)CR1 activation was the dominant pertussis-sensitive mechanism controlling transendothelial migration under flow, and expression of the CX(3)CR1 ligand CX(3)CL1 is increased on hepatic sinusoids in chronic inflammatory liver disease. Exposure of CD16(+) monocytes to immobilized purified CX(3)CL1 triggered beta1-integrin-mediated adhesion to vascular cell adhesion molecule-1 and induced the development of a migratory phenotype. Following transmigration or exposure to soluble CX(3)CL1, CD16(+) monocytes rapidly but transiently lost expression of CX(3)CR1. Adhesion and transmigration across HSECs under flow was also dependent on vascular adhesion protein-1 (VAP-1) on the HSECs. CONCLUSION Our data suggest that CD16(+) monocytes are recruited by a combination of adhesive signals involving VAP-1 and CX(3)CR1 mediated integrin-activation. Thus a novel combination of surface molecules, including VAP-1 and CX(3)CL1 promotes the recruitment of CD16(+) monocytes to the liver, allowing them to localize at sites of chronic inflammation and fibrosis.
Collapse
Affiliation(s)
| | - Stuart M. Curbishley
- Centre for Liver Research and NIHR Biomedical Research Unit, College of Medicine and Dentistry, Division of Immunity and Infection, University of Birmingham, Edgbaston, Birmingham, UK. B15 2TT
| | - Patricia F. Lalor
- Centre for Liver Research and NIHR Biomedical Research Unit, College of Medicine and Dentistry, Division of Immunity and Infection, University of Birmingham, Edgbaston, Birmingham, UK. B15 2TT
| | - Chris J. Weston
- Centre for Liver Research and NIHR Biomedical Research Unit, College of Medicine and Dentistry, Division of Immunity and Infection, University of Birmingham, Edgbaston, Birmingham, UK. B15 2TT
| | - Miroslava Blahova
- Centre for Liver Research and NIHR Biomedical Research Unit, College of Medicine and Dentistry, Division of Immunity and Infection, University of Birmingham, Edgbaston, Birmingham, UK. B15 2TT
| | - Evaggelia Liaskou
- Centre for Liver Research and NIHR Biomedical Research Unit, College of Medicine and Dentistry, Division of Immunity and Infection, University of Birmingham, Edgbaston, Birmingham, UK. B15 2TT
| | - Rebecca M Adams
- Centre for Liver Research and NIHR Biomedical Research Unit, College of Medicine and Dentistry, Division of Immunity and Infection, University of Birmingham, Edgbaston, Birmingham, UK. B15 2TT
| | - Andrew P. Holt
- Centre for Liver Research and NIHR Biomedical Research Unit, College of Medicine and Dentistry, Division of Immunity and Infection, University of Birmingham, Edgbaston, Birmingham, UK. B15 2TT,The Liver Unit, Queen Elizabeth Hospital, Edgbaston, Birmingham, UK
| | - David H. Adams
- Centre for Liver Research and NIHR Biomedical Research Unit, College of Medicine and Dentistry, Division of Immunity and Infection, University of Birmingham, Edgbaston, Birmingham, UK. B15 2TT
| |
Collapse
|
33
|
Marttila-Ichihara F, Castermans K, Auvinen K, Oude Egbrink MGA, Jalkanen S, Griffioen AW, Salmi M. Small-molecule inhibitors of vascular adhesion protein-1 reduce the accumulation of myeloid cells into tumors and attenuate tumor growth in mice. THE JOURNAL OF IMMUNOLOGY 2010; 184:3164-73. [PMID: 20154208 DOI: 10.4049/jimmunol.0901794] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Vascular adhesion protein-1 (VAP-1) is an endothelial, cell surface-expressed oxidase involved in leukocyte traffic. The adhesive function of VAP-1 can be blocked by anti-VAP-1 Abs and small-molecule inhibitors. However, the effects of VAP-1 blockade on antitumor immunity and tumor progression are unknown. In this paper, we used anti-VAP-1 mAbs and small-molecule inhibitors of VAP-1 in B16 melanoma and EL-4 lymphoma tumor models in C57BL/6 mice. Leukocyte accumulation into tumors and neoangiogenesis were evaluated by immunohistochemistry, flow cytometry, and intravital videomicroscopy. We found that both anti-VAP-1 Abs and VAP-1 inhibitors reduced the number of leukocytes in the tumors, but they targeted partially different leukocyte subpopulations. Anti-VAP-1 Abs selectively inhibited infiltration of CD8-positive lymphocytes into tumors and had no effect on accumulation of myeloid cells into tumors. In contrast, the VAP-1 inhibitors significantly reduced only the number of proangiogenic Gr-1(+)CD11b(+) myeloid cells in melanomas and lymphomas. Blocking of VAP-1 by either means left tumor homing of regulatory T cells and type 2 immune-suppressing monocytes/macrophages intact. Notably, VAP-1 inhibitors, but not anti-VAP-1 Abs, retarded the growth of melanomas and lymphomas and reduced tumor neoangiogenesis. The VAP-1 inhibitors also reduced the binding of Gr-1(+) myeloid cells to the tumor vasculature. We conclude that tumors use the catalytic activity of VAP-1 to recruit myeloid cells into tumors and to support tumor progression. Small-molecule VAP-1 inhibitors therefore might be a potential new tool for immunotherapy of tumors.
Collapse
|
34
|
Ujula T, Salomäki S, Virsu P, Lankinen P, Mäkinen TJ, Autio A, Yegutkin GG, Knuuti J, Jalkanen S, Roivainen A. Synthesis, 68Ga labeling and preliminary evaluation of DOTA peptide binding vascular adhesion protein-1: a potential PET imaging agent for diagnosing osteomyelitis. Nucl Med Biol 2009; 36:631-41. [PMID: 19647169 DOI: 10.1016/j.nucmedbio.2009.04.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2009] [Revised: 03/18/2009] [Accepted: 04/06/2009] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Vascular adhesion protein-1 (VAP-1) is an infection/inflammation-inducible endothelial glycoprotein. Based on our previous studies, the most VAP-1-selective peptide (VAP-P1) was 1,4,7,10-tetraazacyclododecane-N',N'',N''',N-tetraacetic acid (DOTA)-conjugated, 68gallium (68Ga)-labeled (named [68Ga]DOTAVAP-P1) and evaluated preliminarily. METHODS Targeting was evaluated by using VAP-1-transfected cells. Biodistribution of [68Ga]DOTAVAP-P1 was studied by positron emission tomography imaging of healthy rats and rats with bone inflammation caused by Staphylococcus aureus infection. Uptake of [(68)Ga]DOTAVAP-P1 in osteomyelitis was compared with negative control peptide and competition with an excess of unlabeled DOTAVAP-P1. RESULTS [68Ga]DOTAVAP-P1 bound more efficiently to VAP-1-transfected cells than to controls. In rats, [68Ga]DOTAVAP-P1 cleared rapidly from blood circulation, excreted quickly in urine and showed an in vivo half-life of 26+/-2.3 min. Imaging of osteomyelitis demonstrated modest target-to-background ratio. Studies with the negative control peptide and competitors revealed a significantly lower uptake at the infection site compared to [68Ga]DOTAVAP-P1. CONCLUSIONS The results represent a proof-of-concept that infection-induced VAP-1 can be targeted by [68Ga]DOTA peptide. [68Ga]DOTAVAP-P1 is just the first candidate peptide and an essential opening for developing VAP-1-specific imaging agents.
Collapse
Affiliation(s)
- Tiina Ujula
- Turku PET Center, Turku University Hospital, Turku, Finland
| | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Marttila-Ichihara F, Auvinen K, Elima K, Jalkanen S, Salmi M. Vascular Adhesion Protein-1 Enhances Tumor Growth by Supporting Recruitment of Gr-1+CD11b+ Myeloid Cells into Tumors. Cancer Res 2009; 69:7875-83. [DOI: 10.1158/0008-5472.can-09-1205] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
36
|
Noda K, Nakao S, Zandi S, Engelstädter V, Mashima Y, Hafezi-Moghadam A. Vascular adhesion protein-1 regulates leukocyte transmigration rate in the retina during diabetes. Exp Eye Res 2009; 89:774-81. [PMID: 19635478 DOI: 10.1016/j.exer.2009.07.010] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Revised: 06/28/2009] [Accepted: 07/08/2009] [Indexed: 01/26/2023]
Abstract
Vascular adhesion protein-1 (VAP-1) is an endothelial adhesion molecule that possesses semicarbazide-sensitive amine oxidase (SSAO) activity and is involved in leukocyte recruitment. Leukocyte adhesion to retinal vessels is a predominant feature of experimentally induced diabetic retinopathy (DR). However, the role of VAP-1 in this process is unknown. Diabetes was induced by i.p. injection of Streptozotocin in Long-Evans rats. The specific inhibitor of VAP-1, UV-002, was administered by daily i.p. injections. The expression of VAP-1 mRNA in the retinal extracts of normal and diabetic animals was measured by real-time quantitative polymerase chain reaction (PCR). Firm leukocyte adhesion was quantified in retinal flatmounts after intravascular staining with concanavalin A (ConA). Leukocyte transmigration rate was quantified by in vivo acridine orange leukocyte staining (AOLS). In diabetic rats, the rate of leukocyte transmigration into the retinal tissues of live animals was significantly increased, as determined by AOLS. When diabetic animals were treated with daily injections of the VAP-1 inhibitor (0.3 mg/kg), leukocyte transmigration rate was significantly reduced (P < 0.05). However, firm adhesion of leukocytes in diabetic animals treated with the inhibitor did not differ significantly from vehicle-treated diabetic controls. This work provides evidence for an important role of VAP-1 in the recruitment of leukocyte to the retina in experimental DR. Our results reveal the critical contribution of VAP-1 to leukocyte transmigration, with little impact on firm leukocyte adhesion in the retinas of diabetic animals. VAP-1 inhibition might be beneficial in the treatment of DR.
Collapse
Affiliation(s)
- Kousuke Noda
- Department of Ophthalmology, Harvard Medical School, Boston, MA, USA
| | | | | | | | | | | |
Collapse
|
37
|
Kiss J, Jalkanen S, Fülöp F, Savunen T, Salmi M. Ischemia-reperfusion injury is attenuated in VAP-1-deficient mice and by VAP-1 inhibitors. Eur J Immunol 2009; 38:3041-9. [PMID: 18991279 DOI: 10.1002/eji.200838651] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Neutrophils mediate the damage caused by ischemia-reperfusion both at the site of primary injury and in remote organs. Vascular adhesion protein-1 (VAP-1) is an ectoenzyme expressed on endothelial cells and it has been shown to regulate leukocyte extravasation. Here we show for the first time using VAP-1-deficient mice that VAP-1 plays a significant role in the intestinal damage and acute lung injury after ischemia-reperfusion. Separate inhibition of VAP-1 by small molecule enzyme inhibitors and a function-blocking monoclonal antibody in WT mice revealed that the catalytic activity of VAP-1 is responsible for its pro-inflammatory action. The use of transgenic humanized VAP-1 mice also showed that the enzyme inhibitors alleviate both the ischemia-reperfusion injury in the gut and neutrophil accumulation in the lungs. These data thus indicate that VAP-1 regulates the inflammatory response in ischemia-reperfusion injury and suggest that blockade of VAP-1 may have therapeutic value.
Collapse
Affiliation(s)
- Jan Kiss
- MediCity Research Laboratory, University of Turku, Turku, Finland
| | | | | | | | | |
Collapse
|
38
|
Jalkanen S, Salmi M. VAP-1 and CD73, Endothelial Cell Surface Enzymes in Leukocyte Extravasation. Arterioscler Thromb Vasc Biol 2008; 28:18-26. [DOI: 10.1161/atvbaha.107.153130] [Citation(s) in RCA: 99] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Leukocyte extravasation from the blood into tissues is crucial for normal immune surveillance and in inflammation. Traditionally molecules belonging to selectin, chemokine, integrin, and immunoglobulin super families are thought to mediate the multiple adhesive and activation events needed for a successful emigration cascade. Recently, emerging evidence suggests that enzymes expressed on the surface of endothelial cells and leukocytes also contribute to the leukocyte extravasation cascade. Here we briefly review the role of vascular adhesion protein-1 (VAP-1) and CD73, 2 cell surface enzymes, in leukocyte migration form the blood into the tissues. Importantly, specific enzyme inhibitors, gene-deficient mice, and recombinant enzymes have recently unambiguously shown that the catalytic activity of these enzymes regulates the leukocyte traffic. The concept of enzymatic regulation of leukocyte extravasation provides new insight into the multi-step adhesion cascade and opens new possibilities for inhibiting inappropriate inflammatory reaction through the use of small molecule enzyme inhibitors.
Collapse
Affiliation(s)
- Sirpa Jalkanen
- From the MediCity Research Laboratory, and the Department of Microbiology and Immunology, University of Turku, and the Department of Bacterial and Inflammatory Diseases, National Public Health Institute, Turku, Finland
| | - Marko Salmi
- From the MediCity Research Laboratory, and the Department of Microbiology and Immunology, University of Turku, and the Department of Bacterial and Inflammatory Diseases, National Public Health Institute, Turku, Finland
| |
Collapse
|
39
|
Smith DJ, Vainio PJ. Targeting vascular adhesion protein-1 to treat autoimmune and inflammatory diseases. Ann N Y Acad Sci 2007; 1110:382-8. [PMID: 17911453 DOI: 10.1196/annals.1423.040] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The development of new, safe, and effective anti-inflammatory drugs represents a major challenge for the pharmaceutical industry, as well as a significant opportunity. The increasing prevalence of chronic inflammatory and autoimmune diseases associated with an aging population has led to an intense effort to discover new anti-inflammatory drug targets and drugs acting against them. This review highlights the recent progress made in developing therapies directed against an endothelial cell adhesion molecule called vascular adhesion protein (VAP)-1 for the treatment of chronic inflammatory disease as well as highlighting other therapeutic opportunities offered by this vascular target.
Collapse
Affiliation(s)
- David J Smith
- Biotie Therapies Corp., Tykistökatu 6, Turku, FIN-20520, Finland.
| | | |
Collapse
|
40
|
Koskinen K, Nevalainen S, Karikoski M, Hänninen A, Jalkanen S, Salmi M. VAP-1-deficient mice display defects in mucosal immunity and antimicrobial responses: implications for antiadhesive applications. THE JOURNAL OF IMMUNOLOGY 2007; 179:6160-8. [PMID: 17947691 DOI: 10.4049/jimmunol.179.9.6160] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
VAP-1, an ecto-enzyme expressed on the surface of endothelial cells, is involved in leukocyte trafficking between the blood and tissues under physiological and pathological conditions. In this study, we used VAP-1-deficient mice to elucidate whether absence of VAP-1 alters the immune system under normal conditions and upon immunization and microbial challenge. We found that VAP-1-deficient mice display age-dependent paucity of lymphocytes, in the Peyer's patches of the gut. IgA concentration in serum was also found to be lower in VAP-1(-/-) animals than in wild-type mice. Although there were slightly less CD11a on B and T cells isolated from VAP-1-deficient mice than on those from wild-type mice, there were no differences in the expression of gut-homing-associated adhesion molecules or chemokine receptors. Because anti-VAP-1 therapies are being developed for clinical use to treat inflammation, we determined the effect of VAP-1 deletion on useful immune responses. Oral immunization with OVA showed defective T and B cell responses in VAP-1-deficient mice. Antimicrobial immune responses against Staphylococcus aureus and coxsackie B4 virus were also affected by the absence of VAP-1. Importantly, when the function of VAP-1 was acutely neutralized using small molecule enzyme inhibitors and anti-VAP-1 Abs rather than by gene deletion, no significant impairment in antimicrobial control was detected. In conclusion, VAP-1-deficient mice have mild deviations in the mucosal immune system and therapeutic targeting of VAP-1 does not appear to cause a generalized increase in the risk of infection.
Collapse
|
41
|
Noda K, Miyahara S, Nakazawa T, Almulki L, Nakao S, Hisatomi T, She H, Thomas KL, Garland RC, Miller JW, Gragoudas ES, Kawai Y, Mashima Y, Hafezi‐Moghadam A. Inhibition of vascular adhesion protein‐1 suppresses endotoxin‐induced uveitis. FASEB J 2007; 22:1094-103. [DOI: 10.1096/fj.07-9377com] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kousuke Noda
- Department of OphthalmologyMassachusetts Eye and Ear Infirmary and Harvard Medical SchoolBostonMassachusettsUSA
| | - Shinsuke Miyahara
- Department of OphthalmologyMassachusetts Eye and Ear Infirmary and Harvard Medical SchoolBostonMassachusettsUSA
| | - Toru Nakazawa
- Department of OphthalmologyMassachusetts Eye and Ear Infirmary and Harvard Medical SchoolBostonMassachusettsUSA
| | - Lama Almulki
- Department of OphthalmologyMassachusetts Eye and Ear Infirmary and Harvard Medical SchoolBostonMassachusettsUSA
| | - Shintaro Nakao
- Department of OphthalmologyMassachusetts Eye and Ear Infirmary and Harvard Medical SchoolBostonMassachusettsUSA
| | - Toshio Hisatomi
- Department of OphthalmologyMassachusetts Eye and Ear Infirmary and Harvard Medical SchoolBostonMassachusettsUSA
| | - Haicheng She
- Department of OphthalmologyMassachusetts Eye and Ear Infirmary and Harvard Medical SchoolBostonMassachusettsUSA
| | - Kennard L. Thomas
- Department of OphthalmologyMassachusetts Eye and Ear Infirmary and Harvard Medical SchoolBostonMassachusettsUSA
| | - Rebecca C. Garland
- Department of OphthalmologyMassachusetts Eye and Ear Infirmary and Harvard Medical SchoolBostonMassachusettsUSA
| | - Joan W. Miller
- Department of OphthalmologyMassachusetts Eye and Ear Infirmary and Harvard Medical SchoolBostonMassachusettsUSA
| | - Evangelos S. Gragoudas
- Department of OphthalmologyMassachusetts Eye and Ear Infirmary and Harvard Medical SchoolBostonMassachusettsUSA
| | | | | | - Ali Hafezi‐Moghadam
- Department of OphthalmologyMassachusetts Eye and Ear Infirmary and Harvard Medical SchoolBostonMassachusettsUSA
| |
Collapse
|
42
|
Palmer G, Gabay C, Imhof BA. Leukocyte migration to rheumatoid joints: Enzymes take over. ACTA ACUST UNITED AC 2006; 54:2707-10. [PMID: 16948054 DOI: 10.1002/art.22062] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|