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Namjoo M, Ghafouri H, Assareh E, Aref AR, Mostafavi E, Hamrahi Mohsen A, Balalaie S, Broussy S, Asghari SM. A VEGFB-Based Peptidomimetic Inhibits VEGFR2-Mediated PI3K/Akt/mTOR and PLCγ/ERK Signaling and Elicits Apoptotic, Antiangiogenic, and Antitumor Activities. Pharmaceuticals (Basel) 2023; 16:906. [PMID: 37375853 DOI: 10.3390/ph16060906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/09/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
Vascular endothelial growth factor receptor 2 (VEGFR2) mediates VEGFA signaling mainly through the PI3K/AKT/mTOR and PLCγ/ERK1/2 pathways. Here we unveil a peptidomimetic (VGB3) based on the interaction between VEGFB and VEGFR1 that unexpectedly binds and neutralizes VEGFR2. Investigation of the cyclic and linear structures of VGB3 (named C-VGB3 and L-VGB3, respectively) using receptor binding and cell proliferation assays, molecular docking, and evaluation of antiangiogenic and antitumor activities in the 4T1 mouse mammary carcinoma tumor (MCT) model showed that loop formation is essential for peptide functionality. C-VGB3 inhibited proliferation and tubulogenesis of human umbilical vein endothelial cells (HUVECs), accounting for the abrogation of VEGFR2, p-VEGFR2 and, subsequently, PI3K/AKT/mTOR and PLCγ/ERK1/2 pathways. In 4T1 MCT cells, C-VGB3 inhibited cell proliferation, VEGFR2 expression and phosphorylation, the PI3K/AKT/mTOR pathway, FAK/Paxillin, and the epithelial-to-mesenchymal transition cascade. The apoptotic effects of C-VGB3 on HUVE and 4T1 MCT cells were inferred from annexin-PI and TUNEL staining and activation of P53, caspase-3, caspase-7, and PARP1, which mechanistically occurred through the intrinsic pathway mediated by Bcl2 family members, cytochrome c, Apaf-1 and caspase-9, and extrinsic pathway via death receptors and caspase-8. These data indicate that binding regions shared by VEGF family members may be important in developing novel pan-VEGFR inhibitors that are highly relevant in the pathogenesis of angiogenesis-related diseases.
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Affiliation(s)
- Mohadeseh Namjoo
- Department of Biology, University Campus II, University of Guilan, Rasht P.O. Box 14155-6619, Iran
| | - Hossein Ghafouri
- Department of Biology, Faculty of Sciences, University of Guilan, Rasht P.O. Box 14155-6619, Iran
| | - Elham Assareh
- Department of Biology, Faculty of Sciences, University of Guilan, Rasht P.O. Box 14155-6619, Iran
| | - Amir Reza Aref
- Belfer Center for Applied Cancer Science, Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115, USA
| | - Ebrahim Mostafavi
- Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Ali Hamrahi Mohsen
- Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran P.O. Box 1841, Iran
| | - Saeed Balalaie
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, Tehran P.O. Box 1841, Iran
| | - Sylvain Broussy
- CiTCoM, UMR CNRS 8038, U1268 INSERM, UFR de Pharmacie, Faculté de Santé, Université Paris Cité, 75006 Paris, France
| | - S Mohsen Asghari
- Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran P.O. Box 1841, Iran
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Di Stasi R, De Rosa L, D'Andrea LD. Structure-Based Design of Peptides Targeting VEGF/VEGFRs. Pharmaceuticals (Basel) 2023; 16:851. [PMID: 37375798 DOI: 10.3390/ph16060851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/03/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
Vascular endothelial growth factor (VEGF) and its receptors (VEGFRs) play a main role in the regulation of angiogenesis and lymphangiogenesis. Furthermore, they are implicated in the onset of several diseases such as rheumatoid arthritis, degenerative eye conditions, tumor growth, ulcers and ischemia. Therefore, molecules able to target the VEGF and its receptors are of great pharmaceutical interest. Several types of molecules have been reported so far. In this review, we focus on the structure-based design of peptides mimicking VEGF/VEGFR binding epitopes. The binding interface of the complex has been dissected and the different regions challenged for peptide design. All these trials furnished a better understanding of the molecular recognition process and provide us with a wealth of molecules that could be optimized to be exploited for pharmaceutical applications.
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Affiliation(s)
| | - Lucia De Rosa
- Istituto di Biostrutture e Bioimmagini, CNR, 80131 Napoli, Italy
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Kim KH, Hur J, Lee HY, Lee EG, Lee SY. Cyclo-VEGI inhibits bronchial artery remodeling in a murine model of chronic asthma. Exp Lung Res 2021; 47:494-506. [PMID: 34890282 DOI: 10.1080/01902148.2021.2015011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Purpose/Aim: In the context of asthma, airway bronchial remodeling and angiogenesis in the bronchial mucosa are well established. Cyclopeptidic-vascular endothelial growth inhibitor (cyclo-VEGI) is an inhibitor of the vascular endothelial growth factor (VEGF) receptor that increases the proliferation of endothelial cells and the formation of new vessels. However, changes in the bronchial arteries of patients with asthma have not been clearly elucidated. We investigated whether structural changes occurred in bronchial arteries, as well as the effects of cyclo-VEGI in a mouse model of chronic asthma (in vivo) and human fibroblasts (in vitro). Materials and Methods: A validated mouse model of allergic airway inflammation with ovalbumin (OVA) as the causative allergen was used for the study. Mice were treated with cyclo-VEGI or fluticasone during OVA challenge. In vitro experiments were conducted to determine whether fibroblasts proliferated following elastin exposure and the effects of cyclo-VEGI on them. Results: OVA sensitization and challenge led to greater perivascular smooth muscle area, more elastic fibers, and elevated expression of vascular cell adhesion molecule (VCAM)-1 antigen. These phenomena indicated changes to bronchial arteries. Cyclo-VEGI and fluticasone treatment both inhibited airway hyper-responsiveness and inflammation. Cyclo-VEGI-treated mice exhibited decreased perivascular smooth muscle area, elastin fibers, and VCAM-1 expression. Fluticasone-treated mice exhibited reductions in perivascular smooth muscle but not in perivascular elastin or VCAM-1 expression. In vitro, fibroblast proliferation was enhanced by elastin treatment, which was inhibited by cyclo-VEGI treatment. Eotaxin expression was elevated in elastin-treated fibroblasts and decreased with cyclo-VEGI treatment. Conclusions: Vascular remodeling occurred in our mouse model of chronic asthma. Cyclo-VEGI could reduce airway inflammation and hyper-responsiveness by inhibiting VCAM-1 expression and elastin deposition around the bronchial arteries.
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Affiliation(s)
- Kyung Hoon Kim
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of South Korea
| | - Jung Hur
- Division of Allergy, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of South Korea
| | - Hwa Young Lee
- Division of Allergy, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of South Korea
| | - Eung Gu Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of South Korea
| | - Sook Young Lee
- Division of Allergy, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of South Korea
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HIV-1 Tat and Heparan Sulfate Proteoglycans Orchestrate the Setup of in Cis and in Trans Cell-Surface Interactions Functional to Lymphocyte Trans-Endothelial Migration. Molecules 2021; 26:molecules26247488. [PMID: 34946571 PMCID: PMC8705413 DOI: 10.3390/molecules26247488] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/04/2021] [Accepted: 12/06/2021] [Indexed: 12/26/2022] Open
Abstract
HIV-1 transactivating factor Tat is released by infected cells. Extracellular Tat homodimerizes and engages several receptors, including integrins, vascular endothelial growth factor receptor 2 (VEGFR2) and heparan sulfate proteoglycan (HSPG) syndecan-1 expressed on various cells. By means of experimental cell models recapitulating the processes of lymphocyte trans-endothelial migration, here, we demonstrate that upon association with syndecan-1 expressed on lymphocytes, Tat triggers simultaneously the in cis activation of lymphocytes themselves and the in trans activation of endothelial cells (ECs). This "two-way" activation eventually induces lymphocyte adhesion and spreading onto the substrate and vascular endothelial (VE)-cadherin reorganization at the EC junctions, with consequent endothelial permeabilization, leading to an increased extravasation of Tat-presenting lymphocytes. By means of a panel of biochemical activation assays and specific synthetic inhibitors, we demonstrate that during the above-mentioned processes, syndecan-1, integrins, FAK, src and ERK1/2 engagement and activation are needed in the lymphocytes, while VEGFR2, integrin, src and ERK1/2 are needed in the endothelium. In conclusion, the Tat/syndecan-1 complex plays a central role in orchestrating the setup of the various in cis and in trans multimeric complexes at the EC/lymphocyte interface. Thus, by means of computational molecular modelling, docking and dynamics, we also provide a characterization at an atomic level of the binding modes of the Tat/heparin interaction, with heparin herein used as a structural analogue of the heparan sulfate chains of syndecan-1.
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Anti-Angiogenic Property of Free Human Oligosaccharides. Biomolecules 2021; 11:biom11060775. [PMID: 34064180 PMCID: PMC8224327 DOI: 10.3390/biom11060775] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 12/29/2022] Open
Abstract
Angiogenesis, a fundamental process in human physiology and pathology, has attracted considerable attention owing to its potential as a therapeutic strategy. Vascular endothelial growth factor (VEGF) and its receptor (VEGFR) are deemed major mediators of angiogenesis. To date, inhibition of the VEGF-A/VEGFR-2 axis has been an effective strategy employed in the development of anticancer drugs. However, some limitations, such as low efficacy and side effects, need to be addressed. Several drug candidates have been discovered, including small molecule compounds, recombinant proteins, and oligosaccharides. In this review, we focus on human oligosaccharides as modulators of angiogenesis. In particular, sialylated human milk oligosaccharides (HMOs) play a significant role in the inhibition of VEGFR-2-mediated angiogenesis. We discuss the structural features concerning the interaction between sialylated HMOs and VEGFR-2 as a molecular mechanism of anti-angiogenesis modulation and its effectiveness in vivo experiments. In the current state, extensive clinical trials are required to develop a novel VEGFR-2 inhibitor from sialylated HMOs.
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Tejada MÁ, Santos-Llamas AI, Fernández-Ramírez MJ, Tarín JJ, Cano A, Gómez R. A Reassessment of the Therapeutic Potential of a Dopamine Receptor 2 Agonist (D2-AG) in Endometriosis by Comparison against a Standardized Antiangiogenic Treatment. Biomedicines 2021; 9:biomedicines9030269. [PMID: 33800198 PMCID: PMC8001569 DOI: 10.3390/biomedicines9030269] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 02/25/2021] [Accepted: 03/02/2021] [Indexed: 12/26/2022] Open
Abstract
Dopamine receptor 2 agonists (D2-ags) have been shown to reduce the size of tumors by targeting aberrant angiogenesis in pathological tissue. Because of this, the use of a D2-ag was inferred for endometriosis treatment. When assayed in mouse models however, D2-ags have been shown to cause a shift of the immature vessels towards a more mature phenotype but not a significant reduction in the amount of vascularization and size of lesions. These has raised concerns on whether the antiangiogenic effects of these compounds confer a therapeutic value for endometriosis. In the belief that antiangiogenic effects of D2-ags in endometriosis were masked due to non-optimal timing of pharmacological interventions, herein we aimed to reassess the antiangiogenic therapeutic potential of D2-ags in vivo by administering compounds at a timeframe in which vessels in the lesions are expected to be more sensitive to antiangiogenic stimuli. To prove our point, immunodeficient (NU/NU) mice were given a D2-ag (cabergoline), anti-VEGF (CBO-P11) or vehicle (saline) compounds (n = 8 per group) starting 5 days after implantation of a fluorescently labeled human lesion. The effects on the size of the implants was estimated by monitoring the extent of fluorescence emitted by the lesion during the three-week treatment period. Subsequently mice were sacrificed and lesions excised and fixed for quantitative immunohistochemical/immunofluorescent analysis of angiogenic parameters. Lesion size, vascular density and innervation were comparable in D2-ag and anti-VEGF groups and significantly decreased when compared to control. These data suggest that D2-ags are as powerful as standard antiangiogenic compounds in interfering with angiogenesis and lesion size. Our preliminary study opens the way to further exploration of the mechanisms beneath the antiangiogenic effects of D2-ags for endometriosis treatment in humans.
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Affiliation(s)
- Miguel Á. Tejada
- Research Unit on Women’s Health-Institute of Health Research, INCLIVA, 46010 Valencia, Spain; (A.I.S.-L.); (J.J.T.)
- Correspondence: (M.Á.T.); (A.C.); (R.G.)
| | - Ana I. Santos-Llamas
- Research Unit on Women’s Health-Institute of Health Research, INCLIVA, 46010 Valencia, Spain; (A.I.S.-L.); (J.J.T.)
| | - María José Fernández-Ramírez
- Department of Obstetrics and Gynecology, Hospital Clínico Universitario, 46010 Valencia, Spain;
- Department of Pediatrics and Obstetrics and Gynecology, University of Valencia, 46010 Valencia, Spain
| | - Juan J. Tarín
- Research Unit on Women’s Health-Institute of Health Research, INCLIVA, 46010 Valencia, Spain; (A.I.S.-L.); (J.J.T.)
- Department of Cellular Biology, Functional Biology, and Physical Anthropology, University of Valencia, 46100 Burjassot, Spain
| | - Antonio Cano
- Research Unit on Women’s Health-Institute of Health Research, INCLIVA, 46010 Valencia, Spain; (A.I.S.-L.); (J.J.T.)
- Department of Pediatrics and Obstetrics and Gynecology, University of Valencia, 46010 Valencia, Spain
- Correspondence: (M.Á.T.); (A.C.); (R.G.)
| | - Raúl Gómez
- Research Unit on Women’s Health-Institute of Health Research, INCLIVA, 46010 Valencia, Spain; (A.I.S.-L.); (J.J.T.)
- Department of Pathology, University of Valencia, 46010 Valencia, Spain
- Correspondence: (M.Á.T.); (A.C.); (R.G.)
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Dmytriyeva O, de Diego Ajenjo A, Lundø K, Hertz H, Rasmussen KK, Christiansen AT, Klingelhofer J, Nielsen AL, Hoeber J, Kozlova E, Woldbye DPD, Pankratova S. Neurotrophic Effects of Vascular Endothelial Growth Factor B and Novel Mimetic Peptides on Neurons from the Central Nervous System. ACS Chem Neurosci 2020; 11:1270-1282. [PMID: 32283014 DOI: 10.1021/acschemneuro.9b00685] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Vascular endothelial growth factor B (VEGFB) is a pleiotropic trophic factor, which in contrast to the closely related VEGFA is known to have a limited effect on angiogenesis. VEGFB improves survival in various tissues including the nervous system, where the effect was observed mainly for peripheral neurons. The neurotrophic effect of VEGFB on central nervous system neurons has been less investigated. Here we demonstrated that VEGFB promotes neurite outgrowth from primary cerebellar granule, hippocampal, and retinal neurons in vitro. VEGFB protected hippocampal and retinal neurons from both oxidative stress and glutamate-induced neuronal death. The VEGF receptor 1 (VEGFR1) is required for VEGFB-induced neurotrophic and neuroprotective effects. Using a structure-based approach, we designed short peptides, termed Vefin1-7, mimicking the binding interface of VEGFB to VEGFR1. Vefins were analyzed for their secondary structure and binding to VEGF receptors and compared with previously described peptides derived from VEGFA, another ligand of VEGFR1. We show that Vefins have neurotrophic and neuroprotective effects on primary hippocampal, cerebellar granule, and retinal neurons in vitro with potencies comparable to VEGFB. Similar to VEGFB, Vefins were not mitogenic for MCF-7 cancer cells. Furthermore, one of the peptides, Vefin7, even dose-dependently inhibited the proliferation of MCF-7 cells in vitro. Unraveling the neurotrophic and neuroprotective potentials of VEGFB, the only nonangiogenic factor of the VEGF family, is promising for the development of neuroprotective peptide-based therapies.
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Affiliation(s)
- Oksana Dmytriyeva
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
- Laboratory for Molecular Pharmacology, Department of Biomedical Science and Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Amaia de Diego Ajenjo
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Kathrine Lundø
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
- Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Henrik Hertz
- Laboratory of Neuropsychiatry, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Kim K. Rasmussen
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Anders T. Christiansen
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Jorg Klingelhofer
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Alexander L. Nielsen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2100, Denmark
| | - Jan Hoeber
- Department of Neuroscience, Uppsala University, Uppsala 75124, Sweden
| | - Elena Kozlova
- Department of Neuroscience, Uppsala University, Uppsala 75124, Sweden
| | - David P. D. Woldbye
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
| | - Stanislava Pankratova
- Laboratory of Neural Plasticity, Department of Neuroscience, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen 2200, Denmark
- Research Laboratory for Stereology and Neuroscience, Bispebjerg-Frederiksberg Hospital, University Hospital of Copenhagen, Copenhagen 2200, Denmark
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Zimbone S, Santoro AM, La Mendola D, Giacomelli C, Trincavelli ML, Tomasello MF, Milardi D, García-Viñuales S, Sciacca MFM, Martini C, Grasso G. The Ionophoric Activity of a Pro-Apoptotic VEGF165 Fragment on HUVEC Cells. Int J Mol Sci 2020; 21:E2866. [PMID: 32325956 PMCID: PMC7216235 DOI: 10.3390/ijms21082866] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 04/09/2020] [Accepted: 04/16/2020] [Indexed: 12/19/2022] Open
Abstract
Copper plays an important role as a regulator in many pathologies involving the angiogenesis process. In cancerogenesis, tumor progression, and angiogenic diseases, copper homeostasis is altered. Although many details in the pathways involved are still unknown, some copper-specific ligands have been successfully used as therapeutic agents. Copper-binding peptides able to modulate angiogenesis represent a possible way to value new drugs. We previously reported that a fragment (VEGF73-101) of vascular endothelial growth factor (VEGF165), a potent angiogenic, induced an apoptotic effect on human umbilical vein endothelial cells. The aim of this study was to investigate the putative copper ionophoric activity of VEGF73-101, as well as establish a relationship between the structure of the peptide fragment and the cytotoxic activity in the presence of copper(II) ions. Here, we studied the stoichiometry and the conformation of the VEGF73-101/Cu(II) complexes and some of its mutated peptides by electrospray ionization mass spectrometry and circular dichroism spectroscopy. Furthermore, we evaluated the effect of all peptides in the absence and presence of copper ions by cell viability and cytofuorimetric assays. The obtained results suggest that VEGF73-101 could be considered an interesting candidate in the development of new molecules with ionophoric properties as agents in antiangiogenic therapeutic approaches.
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Affiliation(s)
- Stefania Zimbone
- CNR Istituto di Cristallografia Sede Secondaria di Catania, Via Gaifami 18, 95126 Catania, Italy; (S.Z.); (A.M.S.); (M.F.T.); (D.M.); (S.G.-V.); (M.F.M.S.)
| | - Anna M. Santoro
- CNR Istituto di Cristallografia Sede Secondaria di Catania, Via Gaifami 18, 95126 Catania, Italy; (S.Z.); (A.M.S.); (M.F.T.); (D.M.); (S.G.-V.); (M.F.M.S.)
| | - Diego La Mendola
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 6, 56126 Pisa, Italy; (D.L.M.); (C.G.); (M.L.T.); (C.M.)
| | - Chiara Giacomelli
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 6, 56126 Pisa, Italy; (D.L.M.); (C.G.); (M.L.T.); (C.M.)
| | - Maria L. Trincavelli
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 6, 56126 Pisa, Italy; (D.L.M.); (C.G.); (M.L.T.); (C.M.)
| | - Marianna F. Tomasello
- CNR Istituto di Cristallografia Sede Secondaria di Catania, Via Gaifami 18, 95126 Catania, Italy; (S.Z.); (A.M.S.); (M.F.T.); (D.M.); (S.G.-V.); (M.F.M.S.)
| | - Danilo Milardi
- CNR Istituto di Cristallografia Sede Secondaria di Catania, Via Gaifami 18, 95126 Catania, Italy; (S.Z.); (A.M.S.); (M.F.T.); (D.M.); (S.G.-V.); (M.F.M.S.)
| | - Sara García-Viñuales
- CNR Istituto di Cristallografia Sede Secondaria di Catania, Via Gaifami 18, 95126 Catania, Italy; (S.Z.); (A.M.S.); (M.F.T.); (D.M.); (S.G.-V.); (M.F.M.S.)
| | - Michele F. M. Sciacca
- CNR Istituto di Cristallografia Sede Secondaria di Catania, Via Gaifami 18, 95126 Catania, Italy; (S.Z.); (A.M.S.); (M.F.T.); (D.M.); (S.G.-V.); (M.F.M.S.)
| | - Claudia Martini
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 6, 56126 Pisa, Italy; (D.L.M.); (C.G.); (M.L.T.); (C.M.)
| | - Giulia Grasso
- CNR Istituto di Cristallografia Sede Secondaria di Catania, Via Gaifami 18, 95126 Catania, Italy; (S.Z.); (A.M.S.); (M.F.T.); (D.M.); (S.G.-V.); (M.F.M.S.)
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Haddada MB, Koshel D, Yang Z, Fu W, Spadavecchia J, Pesnel S, Morel AL. Proof of concept of plasmonic thermal destruction of surface cancers by gold nanoparticles obtained by green chemistry. Colloids Surf B Biointerfaces 2019; 184:110496. [PMID: 31525600 DOI: 10.1016/j.colsurfb.2019.110496] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Revised: 09/05/2019] [Accepted: 09/06/2019] [Indexed: 12/01/2022]
Abstract
A greener approach for the design of surface plasmon resonant gold nanoparticles has been obtained with a hydrosoluble fraction of an endemic asteraceae medicinal plant. This medicinal plant is originated from Indian Ocean and demonstrates its bioreducing activity in the design of stable green nanomedicine in aqueous media. This article describes the preclinical assessment of the efficacy of these novel nanocandidates on murine model by intratumoral and intravenous injections. It definitely demonstrates two key points in the treatment of cancer: 1) optimization of the tumor microenvironment targeting by specific ligands for a limited damage on healthy tissue, 2) the need to screen the specific irradiation dose (time, power) taking into account the type of tumor.
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Affiliation(s)
- Maroua Ben Haddada
- TORSKAL Nanosciences, 2 rue Maxime Rivière, 97490 Sainte-Clotilde, France; CNRS, UMR 7244, CSPBAT, Laboratoire de Chimie, Structures et Propriétés de Biomatériaux et d'Agents Thérapeutiques, Université Paris 13, Sorbonne Paris Cité, Bobigny, France
| | - Dimitri Koshel
- TORSKAL Nanosciences, 2 rue Maxime Rivière, 97490 Sainte-Clotilde, France
| | - Zhang Yang
- Southwest Hospital, Third Military Medical University (TMMU), Chongqing, China
| | - Weiling Fu
- Southwest Hospital, Third Military Medical University (TMMU), Chongqing, China
| | - Jolanda Spadavecchia
- CNRS, UMR 7244, CSPBAT, Laboratoire de Chimie, Structures et Propriétés de Biomatériaux et d'Agents Thérapeutiques, Université Paris 13, Sorbonne Paris Cité, Bobigny, France
| | - Sabrina Pesnel
- TORSKAL Nanosciences, 2 rue Maxime Rivière, 97490 Sainte-Clotilde, France
| | - Anne-Laure Morel
- TORSKAL Nanosciences, 2 rue Maxime Rivière, 97490 Sainte-Clotilde, France.
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Priyadarshini CS, Balaji T, Kumar JA, Subramanian M, Sundaramurthi I, Meera M. Chlorpyrifos and its metabolite modulates angiogenesis in the chorioallantoic membrane of chick embryo. J Basic Clin Physiol Pharmacol 2019; 31:jbcpp-2019-0041. [PMID: 31622248 DOI: 10.1515/jbcpp-2019-0041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 07/02/2019] [Indexed: 02/07/2023]
Abstract
Background Chlorpyrifos (CPF) is an organophosphate insecticide, acaricide, and miticide used primarily to control foliage and soilborne insect pests on a variety of food and feed crops. Since trace amounts of these compounds are found in water and food products, they easily enter into the organ system unnoticed. In the same way, the compound or its metabolite gets transmitted from the parent to the embryo mainly through blood vessels. Since blood vessels form the major route of transport, it is pertinent to study the effect of these compounds during angiogenesis. The effect of CPF and 3,5,6-trichloro-2-pyridinol (TCPy) on the angiogenesis of chick embryo was evaluated in the chorioallantoic membrane (CAM) using an ex vivo model. Methods Nine-day-old incubated eggs where inoculated with various doses of CPF and TCPy. After 48 h of incubation, the CAM layers were retrieved and analyzed using angiogenesis software to obtain the density of blood vessels. Histomorphometric studies were performed to measure the thickness of vessel walls. The expression of VEGF, VEGFR2, and N-cadherin genes responsible for angiogenesis were analyzed. Results The exposure to the parent compound CPF and its metabolite TCPy promoted angiogenesis in groups administered with lower concentration of the pesticide and its metabolite, whereas a decline in angiogenesis was observed at higher concentrations. These observations were made by analyzing the density, histomorphometry results, and semiquantitative reverse transcriptase polymerase chain reaction (RT-PCR) results. The density, thickness, and lumen size of blood vessels in the groups with low concentration of CPF and TCPy were 28.34, 9 μm, and 30 μm, respectively, whereas in the groups with higher CPF and TCPy concentrations, they were 12, 3 μm, and 9 μm, respectively. Conclusions Hence, CPF and its metabolites interfere with angiogenesis in the CAM of chick embryos. Because of their estrogen-mimicking ability, pesticides are the prime etiological suspects of increasing alteration in blood vessel formation. These results may be of help in future studies on the effect of CPF in embryonic growth, wound healing, diabetes, and tumors.
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Affiliation(s)
- C Swathi Priyadarshini
- Department of Anatomy, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Thotakura Balaji
- Department of Anatomy, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Chennai 603103, Tamil Nadu, India, Mobile: +91 7358449857
| | - Jyothi Ashok Kumar
- Department of Anatomy, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Manickam Subramanian
- Department of Anatomy, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - Indumathi Sundaramurthi
- Department of Anatomy, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Chennai 603103, Tamil Nadu, India
| | - M Meera
- Department of Medical Biotechnology, Faculty of Allied Health Science, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Chennai 603103, Tamil Nadu, India
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11
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Structural studies of the binding of an antagonistic cyclic peptide to the VEGFR1 domain 2. Eur J Med Chem 2019; 169:65-75. [DOI: 10.1016/j.ejmech.2019.02.069] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Revised: 02/19/2019] [Accepted: 02/25/2019] [Indexed: 12/17/2022]
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12
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Zanella S, Bocchinfuso G, De Zotti M, Arosio D, Marino F, Raniolo S, Pignataro L, Sacco G, Palleschi A, Siano AS, Piarulli U, Belvisi L, Formaggio F, Gennari C, Stella L. Rational Design of Antiangiogenic Helical Oligopeptides Targeting the Vascular Endothelial Growth Factor Receptors. Front Chem 2019; 7:170. [PMID: 30984741 PMCID: PMC6449863 DOI: 10.3389/fchem.2019.00170] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 03/05/2019] [Indexed: 01/25/2023] Open
Abstract
Tumor angiogenesis, essential for cancer development, is regulated mainly by vascular endothelial growth factors (VEGFs) and their receptors (VEGFRs), which are overexpressed in cancer cells. Therefore, the VEGF/VEGFR interaction represents a promising pharmaceutical target to fight cancer progression. The VEGF surface interacting with VEGFRs comprises a short α-helix. In this work, helical oligopeptides mimicking the VEGF-C helix were rationally designed based on structural analyses and computational studies. The helical conformation was stabilized by optimizing intramolecular interactions and by introducing helix-inducing Cα,α-disubstituted amino acids. The conformational features of the synthetic peptides were characterized by circular dichroism and nuclear magnetic resonance, and their receptor binding properties and antiangiogenic activity were determined. The best hits exhibited antiangiogenic activity in vitro at nanomolar concentrations and were resistant to proteolytic degradation.
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Affiliation(s)
- Simone Zanella
- Department of Chemistry, University of Milan, Milan, Italy
| | - Gianfranco Bocchinfuso
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome, Italy
| | - Marta De Zotti
- Padova Unit, Department of Chemistry, Institute of Biomolecular Chemistry, CNR, University of Padova, Padova, Italy
| | - Daniela Arosio
- National Research Council, Institute of Molecular Science and Technologies, Milan, Italy
| | - Franca Marino
- Center for Research in Medical Pharmacology, University of Insubria, Varese, Italy
| | - Stefano Raniolo
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome, Italy
| | - Luca Pignataro
- Department of Chemistry, University of Milan, Milan, Italy
| | - Giovanni Sacco
- Department of Chemistry, University of Milan, Milan, Italy
| | - Antonio Palleschi
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome, Italy
| | - Alvaro S Siano
- Departamento de Química Organica, Facultad de Bioquímica y Ciencias Biologicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Umberto Piarulli
- Center for Research in Medical Pharmacology, University of Insubria, Varese, Italy
| | - Laura Belvisi
- Department of Chemistry, University of Milan, Milan, Italy.,National Research Council, Institute of Molecular Science and Technologies, Milan, Italy
| | - Fernando Formaggio
- Padova Unit, Department of Chemistry, Institute of Biomolecular Chemistry, CNR, University of Padova, Padova, Italy
| | - Cesare Gennari
- Department of Chemistry, University of Milan, Milan, Italy.,National Research Council, Institute of Molecular Science and Technologies, Milan, Italy
| | - Lorenzo Stella
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome, Italy
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As MN, Deshpande R, Kale VP, Bhonde RR, Datar SP. Establishment of an in ovo chick embryo yolk sac membrane (YSM) assay for pilot screening of potential angiogenic and anti-angiogenic agents. Cell Biol Int 2018; 42:1474-1483. [PMID: 30136736 DOI: 10.1002/cbin.11051] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 08/18/2018] [Indexed: 12/26/2022]
Abstract
Angiogenesis, the process of new blood vessel formation from pre-existing vessels, is essential for growth and development. Development of drugs that can accelerate or decelerate angiogenesis in the context of various diseases requires appropriate preclinical screening. As angiogenesis involves complex cellular and molecular processes, in vivo studies are superior to in vitro investigations. Conventional in vitro, in vivo, and ex ovo models of angiogenesis are time consuming and tedious, and require sophisticated infrastructure for embryo culture. In the present study, we established an in ovo chick embryo yolk sac membrane (YSM) assay for angiogenesis and tested the angiogenic potential of arginine, conditioned medium (CM) from human adipose tissue and placenta-derived mesenchymal stem cells (ADMSCs-CM and PDMSCs-CM), avastin and vitamin C. The obtained results were confirmed with the routinely employed chick embryo Chorioallantoic Membrane (CAM) assay. Both assays revealed the pro-angiogenic nature of arginine, ADMSCs-CM, and PDMSCs-CM, and the anti-angiogenic effect of avastin and vitamin C. This novel in ovo YSM model is simple, reproducible, and highly economic in terms of the time frame and cost incurred. The proposed model is thus a suitable substitute to the CAM model for pilot screening of potential angiogenic and anti-angiogenic agents.
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Affiliation(s)
- Muhammad Nihad As
- School of Regenerative Medicine, Manipal University, Bangalore 560065, Karnataka, India
| | - Rucha Deshpande
- Prof. Ramkrishna More Arts, Science and Commerce College, Akurdi, Pune 411044, Maharashtra, India.,National Centre for Cell Science, Pune 411007, Maharashtra, India
| | | | - Ramesh R Bhonde
- Dr. D. Y. Patil Vidyapeeth, Pimpri, Pune 411018, Maharashtra, India
| | - Savita P Datar
- Prof. Ramkrishna More Arts, Science and Commerce College, Akurdi, Pune 411044, Maharashtra, India.,Department of Zoology, S. P. College, Pune 411030, Maharashtra, India
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14
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15
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Wang L, Zhou L, Reille-Seroussi M, Gagey-Eilstein N, Broussy S, Zhang T, Ji L, Vidal M, Liu WQ. Identification of Peptidic Antagonists of Vascular Endothelial Growth Factor Receptor 1 by Scanning the Binding Epitopes of Its Ligands. J Med Chem 2017; 60:6598-6606. [DOI: 10.1021/acs.jmedchem.7b00283] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lei Wang
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 Avenue de l’Observatoire, Paris 75006, France
| | - Lingyu Zhou
- Shanghai Key Laboratory of Complex Prescription and The MOE Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Marie Reille-Seroussi
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 Avenue de l’Observatoire, Paris 75006, France
| | - Nathalie Gagey-Eilstein
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 Avenue de l’Observatoire, Paris 75006, France
| | - Sylvain Broussy
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 Avenue de l’Observatoire, Paris 75006, France
| | - Tianyu Zhang
- Shanghai Key Laboratory of Complex Prescription and The MOE Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Lili Ji
- Shanghai Key Laboratory of Complex Prescription and The MOE Key Laboratory for Standardization of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, 1200 Cailun Road, Shanghai 201203, China
| | - Michel Vidal
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 Avenue de l’Observatoire, Paris 75006, France
- UF Pharmacocinétique
et Pharmacochimie, Hôpital Cochin, AP-HP, 27 Rue du Faubourg Saint Jacques, Paris 75014, France
| | - Wang-Qing Liu
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 Avenue de l’Observatoire, Paris 75006, France
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16
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Studies on wound healing potential of polyherbal formulation using in vitro and in vivo assays. J Ayurveda Integr Med 2017; 8:73-81. [PMID: 28601354 PMCID: PMC5497006 DOI: 10.1016/j.jaim.2016.11.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Revised: 11/21/2016] [Accepted: 11/26/2016] [Indexed: 01/14/2023] Open
Abstract
Background The use of herbal plant extracts in wound healing is known through decades, but it is necessary to provide scientific data through reverse pharmacology. Objective The aim of the present study is to find the mechanism behind the healing of wounds using in vitro and in vivo assays. Material and methods The study was designed to determine proliferation and mobilization of fibroblast and keratinocytes at the site of injury, angiogenesis at the site of healing and reduction in oxidative stress while healing. In our earlier studies it was observed that herbal extract of Vitex negundo L. (VN), Emblica officinalis Gaertn (EO), and Tridax procumbens L. (TP) showed rapid regeneration of skin, wound contraction and collagen synthesis at the site of injury in excision wound model. In the present study the cell mobilization was monitored in the scratch assay on L929 fibroblastic cell line and HaCaT keratinocytes cell line under the influence of aqueous plant extracts and its formulation. This formulation was also assessed for its angiogenic potential using CAM assay. Study was carried out to probe synergistic effect of polyherbal formulation using excision model in rat. Results The formulation was found to contain high amount of flavonoids, tannins and phenols which facilitate wound healing. At 20 μg/ml concentration of formulation, significant increase in tertiary and quaternary vessels were observed due to angiogenic potential of formulation. Formulation at the concentration of 3 μg/ml and 5 μg/ml showed significant mobilization of keratinocytes and fibroblasts respectively at the site of injury. Polyherbal formulation showed rapid regeneration of skin and wound contraction. Biochemical parameters like hydroxyproline, hexosamine and collagen turnover was increased in test drug treated animals as compared to untreated, whereas antioxidants such as catalase and GSH were increased significantly and decreased amount of tissue MDA was observed. Conclusion Polyherbal formulation prepared from the plant extracts accelerates wound healing process by proliferation and mobilization of fibroblast and keratinocytes, and angiogenesis at the site of injury. It also shows fast contraction of wound with its beneficial improvement in tissue biochemical and antioxidant parameters.
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Prieto CP, Ortiz MC, Villanueva A, Villarroel C, Edwards SS, Elliott M, Lattus J, Aedo S, Meza D, Lois P, Palma V. Netrin-1 acts as a non-canonical angiogenic factor produced by human Wharton's jelly mesenchymal stem cells (WJ-MSC). Stem Cell Res Ther 2017; 8:43. [PMID: 28241866 PMCID: PMC5330133 DOI: 10.1186/s13287-017-0494-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 01/16/2017] [Accepted: 02/08/2017] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Angiogenesis, the process in which new blood vessels are formed from preexisting ones, is highly dependent on the presence of classical angiogenic factors. Recent evidence suggests that axonal guidance proteins and their receptors can also act as angiogenic regulators. Netrin, a family of laminin-like proteins, specifically Netrin-1 and 4, act via DCC/Neogenin-1 and UNC5 class of receptors to promote or inhibit angiogenesis, depending on the physiological context. METHODS Mesenchymal stem cells secrete a broad set of classical angiogenic factors. However, little is known about the expression of non-canonical angiogenic factors such as Netrin-1. The aim was to characterize the possible secretion of Netrin ligands by Wharton's jelly-derived mesenchymal stem cells (WJ-MSC). We evaluated if Netrin-1 presence in the conditioned media from these cells was capable of inducing angiogenesis both in vitro and in vivo, using human umbilical vein endothelial cells (HUVEC) and chicken chorioallantoic membrane (CAM), respectively. In addition, we investigated if the RhoA/ROCK pathway is responsible for the integration of Netrin signaling to control vessel formation. RESULTS The paracrine angiogenic effect of the WJ-MSC-conditioned media is mediated at least in part by Netrin-1 given that pharmacological blockage of Netrin-1 in WJ-MSC resulted in diminished angiogenesis on HUVEC. When HUVEC were stimulated with exogenous Netrin-1 assayed at physiological concentrations (10-200 ng/mL), endothelial vascular migration occurred in a concentration-dependent manner. In line with our determination of Netrin-1 present in WJ-MSC-conditioned media we were able to obtain endothelial tubule formation even in the pg/mL range. Through CAM assays we validated that WJ-MSC-secreted Netrin-1 promotes an increased angiogenesis in vivo. Netrin-1, secreted by WJ-MSC, might mediate its angiogenic effect through specific cell surface receptors on the endothelium, such as UNC5b and/or integrin α6β1, expressed in HUVEC. However, the angiogenic response of Netrin-1 seems not to be mediated through the RhoA/ROCK pathway. CONCLUSIONS Thus, here we show that stromal production of Netrin-1 is a critical component of the vascular regulatory machinery. This signaling event may have deep implications in the modulation of several processes related to a number of diseases where angiogenesis plays a key role in vascular homeostasis.
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Affiliation(s)
- Catalina P. Prieto
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - María Carolina Ortiz
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - Andrea Villanueva
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - Cynthia Villarroel
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - Sandra S. Edwards
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - Matías Elliott
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - José Lattus
- Campus Oriente, Department of Obstetrics and Gynecology, Faculty of Medicine, University of Chile, Santiago de Chile, Chile
| | - Sócrates Aedo
- Campus Oriente, Department of Obstetrics and Gynecology, Faculty of Medicine, University of Chile, Santiago de Chile, Chile
| | - Daniel Meza
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - Pablo Lois
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
| | - Verónica Palma
- Laboratory of Stem Cells and Developmental Biology, Faculty of Sciences, University of Chile, Santiago de Chile, Chile
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18
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Gaucher JF, Reille-Seroussi M, Gagey-Eilstein N, Broussy S, Coric P, Seijo B, Lascombe MB, Gautier B, Liu WQ, Huguenot F, Inguimbert N, Bouaziz S, Vidal M, Broutin I. Biophysical Studies of the Induced Dimerization of Human VEGF Receptor 1 Binding Domain by Divalent Metals Competing with VEGF-A. PLoS One 2016; 11:e0167755. [PMID: 27942001 PMCID: PMC5152890 DOI: 10.1371/journal.pone.0167755] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 11/18/2016] [Indexed: 12/29/2022] Open
Abstract
Angiogenesis is tightly regulated through the binding of vascular endothelial growth factors (VEGFs) to their receptors (VEGFRs). In this context, we showed that human VEGFR1 domain 2 crystallizes in the presence of Zn2+, Co2+ or Cu2+ as a dimer that forms via metal-ion interactions and interlocked hydrophobic surfaces. SAXS, NMR and size exclusion chromatography analyses confirm the formation of this dimer in solution in the presence of Co2+, Cd2+ or Cu2+. Since the metal-induced dimerization masks the VEGFs binding surface, we investigated the ability of metal ions to displace the VEGF-A binding to hVEGFR1: using a competition assay, we evidenced that the metals displaced the VEGF-A binding to hVEGFR1 extracellular domain binding at micromolar level.
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Affiliation(s)
- Jean-François Gaucher
- UMR 8015 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
- * E-mail:
| | - Marie Reille-Seroussi
- UMR 8638 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
| | - Nathalie Gagey-Eilstein
- UMR 8638 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
| | - Sylvain Broussy
- UMR 8638 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
| | - Pascale Coric
- UMR 8015 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
| | - Bili Seijo
- UMR 8015 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
| | - Marie-Bernard Lascombe
- UMR 8015 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
| | - Benoit Gautier
- UMR 8638 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
| | - Wang-Quing Liu
- UMR 8638 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
| | - Florent Huguenot
- UMR 8638 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
| | - Nicolas Inguimbert
- Centre de Recherche Insulaire et Observatoire de l’Environnement USR CNRS 3278 CRIOBE, Université de Perpignan Via Domitia, Perpignan, France
| | - Serge Bouaziz
- UMR 8015 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
| | - Michel Vidal
- UMR 8638 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
- UF Pharmacocinétique et Pharmacochimie, hôpital Cochin, AP-HP, Paris, France
| | - Isabelle Broutin
- UMR 8015 CNRS - Université Paris Descartes, Faculté de Pharmacie, Sorbonne Paris Cité, Paris, France
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Iyer AKV, Ramesh V, Castro CA, Kaushik V, Kulkarni YM, Wright CA, Venkatadri R, Rojanasakul Y, Azad N. Nitric oxide mediates bleomycin-induced angiogenesis and pulmonary fibrosis via regulation of VEGF. J Cell Biochem 2016; 116:2484-93. [PMID: 25919965 DOI: 10.1002/jcb.25192] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Pulmonary fibrosis is a progressive lung disease hallmarked by increased fibroblast proliferation, amplified levels of extracellular matrix deposition and increased angiogenesis. Although dysregulation of angiogenic mediators has been implicated in pulmonary fibrosis, the specific rate-limiting angiogenic markers involved and their role in the progression of pulmonary fibrosis remains unclear. We demonstrate that bleomycin treatment induces angiogenesis, and inhibition of the central angiogenic mediator VEGF using anti-VEGF antibody CBO-P11 significantly attenuates bleomycin-induced pulmonary fibrosis in vivo. Bleomycin-induced nitric oxide (NO) was observed to be the key upstream regulator of VEGF via the PI3k/Akt pathway. VEGF regulated other important angiogenic proteins including PAI-1 and IL-8 in response to bleomycin exposure. Inhibition of NO and VEGF activity significantly mitigated bleomycin-induced angiogenic and fibrogenic responses. NO and VEGF are key mediators of bleomycin-induced pulmonary fibrosis, and could serve as important targets against this debilitating disease. Overall, our data suggests an important role for angiogenic mediators in the pathogenesis of bleomycin-induced pulmonary fibrosis.
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Affiliation(s)
- Anand Krishnan V Iyer
- Department of Pharmaceutical Sciences, School of Pharmacy, Hampton University, Hampton, Virginia
| | - Vani Ramesh
- Department of Obstetrics and Gynecology, The Jones Institute for Reproductive Medicine, Eastern Virginia Medical School, Norfolk, Virginia
| | - Carlos A Castro
- Magee Women's Research Institute, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Vivek Kaushik
- Department of Pharmaceutical Sciences, School of Pharmacy, Hampton University, Hampton, Virginia
| | - Yogesh M Kulkarni
- Department of Pharmaceutical Sciences, School of Pharmacy, Hampton University, Hampton, Virginia
| | - Clayton A Wright
- Department of Pharmaceutical Sciences, School of Pharmacy, Hampton University, Hampton, Virginia
| | - Rajkumar Venkatadri
- Department of Pharmaceutical Sciences, School of Pharmacy, Hampton University, Hampton, Virginia
| | - Yon Rojanasakul
- Department of Pharmaceutical Sciences, West Virginia University, Morgantown, West Virginia
| | - Neelam Azad
- Department of Pharmaceutical Sciences, School of Pharmacy, Hampton University, Hampton, Virginia
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20
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Grasso G, Santoro AM, Magrì A, La Mendola D, Tomasello MF, Zimbone S, Rizzarelli E. The Inorganic Perspective of VEGF: Interactions of Cu2+ with Peptides Encompassing a Recognition Domain of the VEGF Receptor. J Inorg Biochem 2016; 159:149-58. [DOI: 10.1016/j.jinorgbio.2016.03.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 02/29/2016] [Accepted: 03/12/2016] [Indexed: 12/19/2022]
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21
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Rubio S, Clarhaut J, Péraudeau E, Vincenzi M, Soum C, Rossi F, Guillon J, Papot S, Ronga L. Diminished oligomerization in the synthesis of new anti-angiogenic cyclic peptide using solution instead of solid-phase cyclization. Biopolymers 2016; 106:368-75. [PMID: 26832831 DOI: 10.1002/bip.22814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 01/13/2016] [Accepted: 01/27/2016] [Indexed: 11/06/2022]
Abstract
The design and synthesis of novel peptides that inhibit angiogenesis is an important area for anti-angiogenic drug development. Cyclic and small peptides present several advantages for therapeutic application, including stability, solubility, increased bio-availability and lack of immune response in the host cell. We describe here the synthesis and biological evaluations of a new cyclic peptide analog of CBO-P11: cyclo(RIKPHE), designated herein as CBO-P23M, a hexamer peptide encompassing residues 82 to 86 of VEGF which are involved in the interaction with VEGF receptor-2. CBO-P23M was prepared using in solution cyclization, therefore reducing the peptide cyclodimerization occurred during solid-phase cyclization. The cyclic dimer of CBO-P23M, which was obtained as the main side product during synthesis of the corresponding monomer, was also isolated and investigated. Both peptides markedly reduce VEGF-A-induced phosphorylation of VEGFR-2 and Erk1/2. Moreover, they exhibit anti-angiogenic activity in an in vitro morphogenesis study. Therefore CBO-P23M and CBO-P23M dimer appear as attractive candidates for the development of novel angiogenesis inhibitors for the treatment of cancer and other angiogenesis-related diseases. © 2016 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 106: 368-375, 2016.
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Affiliation(s)
- Sandra Rubio
- ARNA Laboratory, Université de Bordeaux, UFR Des Sciences Pharmaceutiques, Bordeaux Cedex, F-33076, France.,ARNA Laboratory, INSERM U1212, UMR CNRS 5320, 146 Rue Léo Saignat,, Bordeaux Cedex, 33076, France
| | - Jonathan Clarhaut
- CHU de Poitiers, 2 Rue De La Milétrie, CS90577, Poitiers, 86021, France.,Université de Poitiers, UMR-CNRS 7285, Institut de Chimie des Milieux et des Matériaux de Poitiers, Groupe Systèmes Moléculaires Programmés, 4 Rue Michel Brunet, TSA 51106, Poitiers, 86073, France
| | - Elodie Péraudeau
- CHU de Poitiers, 2 Rue De La Milétrie, CS90577, Poitiers, 86021, France.,Université de Poitiers, ERL-CNRS 7368, 1 Rue Georges Bonnet, TSA 51106, Poitiers, 86073, France
| | - Marian Vincenzi
- ARNA Laboratory, Université de Bordeaux, UFR Des Sciences Pharmaceutiques, Bordeaux Cedex, F-33076, France.,ARNA Laboratory, INSERM U1212, UMR CNRS 5320, 146 Rue Léo Saignat,, Bordeaux Cedex, 33076, France.,Department of Pharmacy, University of Naples "Federico II," and CIRPeB, via Mezzocannone 16, I-80134, Naples, Italy
| | - Claire Soum
- ARNA Laboratory, Université de Bordeaux, UFR Des Sciences Pharmaceutiques, Bordeaux Cedex, F-33076, France.,ARNA Laboratory, INSERM U1212, UMR CNRS 5320, 146 Rue Léo Saignat,, Bordeaux Cedex, 33076, France
| | - Filomena Rossi
- Department of Pharmacy, University of Naples "Federico II," and CIRPeB, via Mezzocannone 16, I-80134, Naples, Italy
| | - Jean Guillon
- ARNA Laboratory, Université de Bordeaux, UFR Des Sciences Pharmaceutiques, Bordeaux Cedex, F-33076, France.,ARNA Laboratory, INSERM U1212, UMR CNRS 5320, 146 Rue Léo Saignat,, Bordeaux Cedex, 33076, France
| | - Sébastien Papot
- Université de Poitiers, UMR-CNRS 7285, Institut de Chimie des Milieux et des Matériaux de Poitiers, Groupe Systèmes Moléculaires Programmés, 4 Rue Michel Brunet, TSA 51106, Poitiers, 86073, France
| | - Luisa Ronga
- ARNA Laboratory, Université de Bordeaux, UFR Des Sciences Pharmaceutiques, Bordeaux Cedex, F-33076, France.,ARNA Laboratory, INSERM U1212, UMR CNRS 5320, 146 Rue Léo Saignat,, Bordeaux Cedex, 33076, France
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22
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Hhex Is Necessary for the Hepatic Differentiation of Mouse ES Cells and Acts via Vegf Signaling. PLoS One 2016; 11:e0146806. [PMID: 26784346 PMCID: PMC4718667 DOI: 10.1371/journal.pone.0146806] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 12/22/2015] [Indexed: 01/07/2023] Open
Abstract
Elucidating the molecular mechanisms involved in the differentiation of stem cells to hepatic cells is critical for both understanding normal developmental processes as well as for optimizing the generation of functional hepatic cells for therapy. We performed in vitro differentiation of mouse embryonic stem cells (mESCs) with a null mutation in the homeobox gene Hhex and show that Hhex-/- mESCs fail to differentiate from definitive endoderm (Sox17+/Foxa2+) to hepatic endoderm (Alb+/Dlk+). In addition, hepatic culture elicited a >7-fold increase in Vegfa mRNA expression in Hhex-/- cells compared to Hhex+/+ cells. Furthermore, we identified VEGFR2+/ALB+/CD34- in early Hhex+/+ hepatic cultures. These cells were absent in Hhex-/- cultures. Finally, through manipulation of Hhex and Vegfa expression, gain and loss of expression experiments revealed that Hhex shares an inverse relationship with the activity of the Vegf signaling pathway in supporting hepatic differentiation. In summary, our results suggest that Hhex represses Vegf signaling during hepatic differentiation of mouse ESCs allowing for cell-type autonomous regulation of Vegfr2 activity independent of endothelial cells.
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Zanella S, Mingozzi M, Dal Corso A, Fanelli R, Arosio D, Cosentino M, Schembri L, Marino F, De Zotti M, Formaggio F, Pignataro L, Belvisi L, Piarulli U, Gennari C. Synthesis, Characterization, and Biological Evaluation of a Dual-Action Ligand Targeting αvβ3 Integrin and VEGF Receptors. ChemistryOpen 2015; 4:633-41. [PMID: 26491644 PMCID: PMC4608532 DOI: 10.1002/open.201500062] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Indexed: 12/17/2022] Open
Abstract
A dual-action ligand targeting both integrin αVβ3 and vascular endothelial growth factor receptors (VEGFRs), was synthesized via conjugation of a cyclic peptidomimetic αVβ3 Arg-Gly-Asp (RGD) ligand with a decapentapeptide. The latter was obtained from a known VEGFR antagonist by acetylation at the Lys13 side chain. Functionalization of the precursor ligands was carried out in solution and in the solid phase, affording two fragments: an alkyne VEGFR ligand and the azide integrin αVβ3 ligand, which were conjugated by click chemistry. Circular dichroism studies confirmed that both the RGD and VEGFR ligand portions of the dual-action compound substantially adopt the biologically active conformation. In vitro binding assays on isolated integrin αVβ3 and VEGFR-1 showed that the dual-action conjugate retains a good level of affinity for both its target receptors, although with one order of magnitude (10/20 times) decrease in potency. The dual-action ligand strongly inhibited the VEGF-induced morphogenesis in Human Umbilical Vein Endothelial Cells (HUVECs). Remarkably, its efficiency in preventing the formation of new blood vessels was similar to that of the original individual ligands, despite the worse affinity towards integrin αVβ3 and VEGFR-1.
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Affiliation(s)
- Simone Zanella
- Dipartimento di Chimica, Università degli Studi di MilanoVia C. Golgi 19, 20133, Milan, Italy
| | - Michele Mingozzi
- Dipartimento di Chimica, Università degli Studi di MilanoVia C. Golgi 19, 20133, Milan, Italy
| | - Alberto Dal Corso
- Dipartimento di Chimica, Università degli Studi di MilanoVia C. Golgi 19, 20133, Milan, Italy
| | - Roberto Fanelli
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'InsubriaVia Valleggio 11, 22100, Como, Italy
| | - Daniela Arosio
- Istituto di Scienze e Tecnologie Molecolari (ISTM), National Research Council (CNR)Via C. Golgi 19, 20133, Milan, Italy
| | - Marco Cosentino
- Center for Research in Medical Pharmacology, Università degli Studi dell'InsubriaVia Ottorino Rossi 9, 21100, Varese, Italy
| | - Laura Schembri
- Center for Research in Medical Pharmacology, Università degli Studi dell'InsubriaVia Ottorino Rossi 9, 21100, Varese, Italy
| | - Franca Marino
- Center for Research in Medical Pharmacology, Università degli Studi dell'InsubriaVia Ottorino Rossi 9, 21100, Varese, Italy
| | - Marta De Zotti
- Istituto di Chimica Biomolecolare, CNR, Unità di Padova, Dipartimento di Chimica, Università degli Studi di PadovaVia Marzolo 1, 35131, Padova, Italy
| | - Fernando Formaggio
- Istituto di Chimica Biomolecolare, CNR, Unità di Padova, Dipartimento di Chimica, Università degli Studi di PadovaVia Marzolo 1, 35131, Padova, Italy
| | - Luca Pignataro
- Dipartimento di Chimica, Università degli Studi di MilanoVia C. Golgi 19, 20133, Milan, Italy
| | - Laura Belvisi
- Dipartimento di Chimica, Università degli Studi di MilanoVia C. Golgi 19, 20133, Milan, Italy
| | - Umberto Piarulli
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'InsubriaVia Valleggio 11, 22100, Como, Italy
| | - Cesare Gennari
- Dipartimento di Chimica, Università degli Studi di MilanoVia C. Golgi 19, 20133, Milan, Italy
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Rezzola S, Dal Monte M, Belleri M, Bugatti A, Chiodelli P, Corsini M, Cammalleri M, Cancarini A, Morbidelli L, Oreste P, Bagnoli P, Semeraro F, Presta M. Therapeutic Potential of Anti-Angiogenic Multitarget N,O-Sulfated E. Coli K5 Polysaccharide in Diabetic Retinopathy. Diabetes 2015; 64:2581-92. [PMID: 25695948 DOI: 10.2337/db14-1378] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 02/10/2015] [Indexed: 11/13/2022]
Abstract
Vascular endothelial growth factor (VEGF) blockers have been developed for the treatment of proliferative diabetic retinopathy (PDR), the leading cause of visual impairments in the working-age population in the Western world. However, limitations to anti-VEGF therapies may exist because of the local production of other proangiogenic factors that may cause resistance to anti-VEGF interventions. Thus, novel therapeutic approaches targeting additional pathways are required. Here, we identified a sulfated derivative of the Escherichia coli polysaccharide K5 [K5-N,OS(H)] as a multitarget molecule highly effective in inhibiting VEGF-driven angiogenic responses in different in vitro, ex vivo, and in vivo assays, including a murine model of oxygen-induced retinopathy. Furthermore, K5-N,OS(H) binds a variety of heparin-binding angiogenic factors upregulated in PDR vitreous humor besides VEGF, thus inhibiting their biological activity. Finally, K5-N,OS(H) hampers the angiogenic activity exerted in vitro and in vivo by human vitreous fluid samples collected from patients with PDR. Together, the data provide compelling experimental evidence that K5-N,OS(H) represents an antiangiogenic multitarget molecule with potential implications for the therapy of pathologic neovessel formation in the retina of patients with PDR.
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Affiliation(s)
- Sara Rezzola
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | | | - Mirella Belleri
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Antonella Bugatti
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Paola Chiodelli
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Michela Corsini
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | | | - Anna Cancarini
- Department of Ophthalmology, University of Brescia, Brescia, Italy
| | | | | | - Paola Bagnoli
- Department of Biology, University of Pisa, Pisa, Italy
| | | | - Marco Presta
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
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Tsujinaka H, Itaya-Hironaka A, Yamauchi A, Sakuramoto-Tsuchida S, Ota H, Takeda M, Fujimura T, Takasawa S, Ogata N. Human retinal pigment epithelial cell proliferation by the combined stimulation of hydroquinone and advanced glycation end-products via up-regulation of VEGF gene. Biochem Biophys Rep 2015; 2:123-131. [PMID: 29124153 PMCID: PMC5668646 DOI: 10.1016/j.bbrep.2015.05.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 05/12/2015] [Accepted: 05/18/2015] [Indexed: 01/26/2023] Open
Abstract
Although recent research showed that advanced glycation endproduct (AGE) and hydroquinone (HQ) are related to the pathogenesis of age-related macular degeneration (AMD), the mechanism how AGE and HQ induce or accelerate AMD remains elusive. In the present study, we examined the effects of AGE and HQ on changes of human retinal pigment epithelial (RPE) cell numbers and found that the viable cell numbers were markedly reduced by HQ by apoptosis and that AGE prevented the decreases of HQ-treated cell numbers by increased replicative DNA synthesis of RPE cells without changing apoptosis. Real-time RT-PCR revealed that vascular endothelial growth factor (VEGF)-A mRNA was increased by HQ treatment and the addition of HQ+AGE resulted in a further increment. The increase of VEGF secretion was confirmed by ELISA, and inhibition of VEGF signaling by chemical inhibitors and small interfering RNA decreased the HQ+AGE-induced increases in RPE cell numbers. The deletion analysis demonstrated that -102 to -43 region was essential for the VEGF-A promoter activation. Site-directed mutaions of specificity protein 1 (SP1) binding sequences in the VEGF-A promoter and RNA interference of SP1 revealed that SP1 is an essential transcription factor for VEGF-A expression. These results indicate that HQ induces RPE cell apoptosis, leading to dry AMD, and suggest that AGE stimulation in addition to HQ enhances VEGF-A transcription via the AGE-receptor for AGE pathway in HQ-damaged cells. As a result, the secreted VEGF acts as an autocrine/paracrine growth factor for RPE and/or adjacent vascular cells, causing wet AMD.
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Key Words
- AGE, advanced glycation endproduct
- AMD, age-related macular degeneration
- Advanced glycation endproduct(s)
- Age-related macular degeneration
- BSA, bovine serum albumin
- ELISA, enzyme-linked immunosorbent assay
- FCS, fetal calf serum
- HQ, hydroquinone
- Hydroquinone
- IdU, 5ʹ-Indo-2ʹ-deoxyuridine
- RAGE, receptor for advanced glycation endproduct
- RPE, retinal pigment epithelial
- RT-PCR, reverse transcription polymerase chain reaction;
- Retinal pigment epithelial cells
- SP1, specificity protein 1
- SR, scavenger receptor
- TUNEL, terminal deoxynucleotidyl transferase dUTP nick end labeling
- VEGF, vascular endothelial growth factor
- Vascular endothelial growth factor
- WST-8, 2-(2-methoxy-4-nitrophenyl)-3-(4-nitrophenyl)-5-(2,4-disulfophenyl)-2H-tetrazolium monosodium salt
- siRNA, small interfering RNA
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Affiliation(s)
- Hiroki Tsujinaka
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
- Department of Ophthalmology, Nara Medical University, Kashihara, 634-8522 Nara, Japan
| | - Asako Itaya-Hironaka
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
| | - Akiyo Yamauchi
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
| | | | - Hiroyo Ota
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
| | - Maiko Takeda
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
| | - Takanori Fujimura
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
| | - Shin Takasawa
- Department of Biochemistry, Nara Medical University, 840 Shijo-cho, Kashihara, 634-8521 Nara, Japan
| | - Nahoko Ogata
- Department of Ophthalmology, Nara Medical University, Kashihara, 634-8522 Nara, Japan
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26
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Shin MR, Kang SK, Kim YS, Lee SY, Hong SC, Kim EC. TNF-α and LPS activate angiogenesis via VEGF and SIRT1 signalling in human dental pulp cells. Int Endod J 2014; 48:705-16. [PMID: 25311745 DOI: 10.1111/iej.12396] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 10/08/2014] [Indexed: 01/05/2023]
Abstract
AIM To assess whether SIRT1 and VEGF are responsible for tumour necrosis factor-α (TNF-α) and lipopolysaccharide (LPS)-induced angiogenesis and to examine the molecular mechanism(s) of action in human dental pulp cells (HDPCs). METHODOLOGY Immortalized HDPCs obtained from Prof. Takashi Takata (Hiroshima University, Japan) were treated with LPS (1 μg mL(-1) ) and TNF-α (10 ng mL(-1) ) for 24 h. mRNA and protein levels were examined by RT-PCR and Western blotting, respectively. Migration and tube formation were examined in human umbilical vein endothelial cells (HUVECs). The data were analysed by one-way anova. Statistical analysis was performed at α = 0.05. RESULTS LPS and TNF-α upregulated VEGF and SIRT1 mRNA and protein levels. Inhibition of SIRT1 activity by sirtinol and SIRT1 siRNA or inhibition of the VEGF receptor by CBO-P11 significantly attenuated LPS + TNF-α-stimulated MMPs production in HDPCs, as well as migration and tube formation in HUVECs (P < 0.05). Furthermore, sirtinol, SIRT1 siRNA and CBO-P11 attenuated phosphorylation of Akt, extracellular signal-regulated kinase (ERK), p38 and c-Jun N-terminal kinase (JNK) and the nuclear translocation of NF-κB p65. Pre-treatment with inhibitors of p38, ERK, JNK, PI3K and NF-κB decreased LPS + TNF-α-induced VEGF and SIRT1 expression, MMPs activity in HDPCs and angiogenesis (P < 0.05) in HUVECs. CONCLUSIONS TNF-α and LPS led to upregulation of VEGF and SIRT1, and subsequent upregulation of MMP-2 and MMP-9 production, and promote angiogenesis via pathways involving PI3K, p38, ERK, JNK and NF-κB. The results suggest that inhibition of SIRT1 and VEGF might attenuate pro-inflammatory mediator-induced pulpal disease.
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Affiliation(s)
- M R Shin
- Department of Prosthodontics, Dongatn Sacred Heart Hospital, Hallym University, Dongtan, Korea
| | - S K Kang
- Department of Oral Medicine, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - Y S Kim
- Department of Oral and Maxillofacial Pathology, Research Center for Tooth and Periodontal Regeneration (MRC), School of Dentistry, Kyung Hee University, Seoul, Korea
| | - S Y Lee
- Department of Oral and Maxillofacial Pathology, Research Center for Tooth and Periodontal Regeneration (MRC), School of Dentistry, Kyung Hee University, Seoul, Korea
| | - S C Hong
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - E-C Kim
- Department of Oral and Maxillofacial Pathology, Research Center for Tooth and Periodontal Regeneration (MRC), School of Dentistry, Kyung Hee University, Seoul, Korea
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27
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Wang L, Gagey-Eilstein N, Broussy S, Reille-Seroussi M, Huguenot F, Vidal M, Liu WQ. Design and synthesis of C-terminal modified cyclic peptides as VEGFR1 antagonists. Molecules 2014; 19:15391-407. [PMID: 25264829 PMCID: PMC6270838 DOI: 10.3390/molecules191015391] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Revised: 09/12/2014] [Accepted: 09/17/2014] [Indexed: 01/12/2023] Open
Abstract
Previously designed cyclic peptide antagonist c[YYDEGLEE]-NH2 disrupts the interaction between vascular endothelial growth factor (VEGF) and its receptors (VEGFRs). It represents a promising tool in the fight against cancer and age-related macular degeneration. We described in this paper the optimization of the lead peptide by C-terminal modification. A new strategy for the synthesis of cyclic peptides is developed, improving the cyclisation efficiency. At 100 µM, several new peptides with an aromatic group flexibly linked at C-terminal end showed significantly increased receptor binding affinities in competition ELISA test. The most active peptide carrying a coumarin group may be a useful tool in anti-angiogenic biological studies.
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Affiliation(s)
- Lei Wang
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 avenue de l'observatoire, Paris 75006, France.
| | - Nathalie Gagey-Eilstein
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 avenue de l'observatoire, Paris 75006, France.
| | - Sylvain Broussy
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 avenue de l'observatoire, Paris 75006, France.
| | - Marie Reille-Seroussi
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 avenue de l'observatoire, Paris 75006, France.
| | - Florent Huguenot
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 avenue de l'observatoire, Paris 75006, France.
| | - Michel Vidal
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 avenue de l'observatoire, Paris 75006, France.
| | - Wang-Qing Liu
- UMR 8638 CNRS, Faculté de Pharmacie de Paris, Université Paris Descartes, Sorbonne Paris Cité, 4 avenue de l'observatoire, Paris 75006, France.
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28
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Cyclin G2 promotes hypoxia-driven local invasion of glioblastoma by orchestrating cytoskeletal dynamics. Neoplasia 2014; 15:1272-81. [PMID: 24339739 DOI: 10.1593/neo.131440] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 10/21/2013] [Accepted: 10/21/2013] [Indexed: 02/06/2023] Open
Abstract
Microenvironmental conditions such as hypoxia potentiate the local invasion of malignant tumors including glioblastomas by modulating signal transduction and protein modification, yet the mechanism by which hypoxia controls cytoskeletal dynamics to promote the local invasion is not well defined. Here, we show that cyclin G2 plays pivotal roles in the cytoskeletal dynamics in hypoxia-driven invasion by glioblastoma cells. Cyclin G2 is a hypoxia-induced and cytoskeleton-associated protein and is required for glioblastoma expansion. Mechanistically, cyclin G2 recruits cortactin to the juxtamembrane through its SH3 domain-binding motif and consequently promotes the restricted tyrosine phosphorylation of cortactin in concert with src. Moreover, cyclin G2 interacts with filamentous actin to facilitate the formation of membrane ruffles. In primary glioblastoma, cyclin G2 is abundantly expressed in severely hypoxic regions such as pseudopalisades, which consist of actively migrating glioma cells. Furthermore, we show the effectiveness of dasatinib against hypoxia-driven, cyclin G2-involved invasion in vitro and in vivo. Our findings elucidate the mechanism of cytoskeletal regulation by which severe hypoxia promotes the local invasion and may provide a therapeutic target in glioblastoma.
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29
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De Rosa L, Diana D, Basile A, Russomanno A, Isernia C, Turco MC, Fattorusso R, D'Andrea LD. Design, structural and biological characterization of a VEGF inhibitor β-hairpin-constrained peptide. Eur J Med Chem 2014; 73:210-6. [DOI: 10.1016/j.ejmech.2013.12.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 11/19/2013] [Accepted: 12/13/2013] [Indexed: 01/01/2023]
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30
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Bramswig KH, Poettler M, Unseld M, Wrba F, Uhrin P, Zimmermann W, Zielinski CC, Prager GW. Soluble carcinoembryonic antigen activates endothelial cells and tumor angiogenesis. Cancer Res 2013; 73:6584-96. [PMID: 24121495 DOI: 10.1158/0008-5472.can-13-0123] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Carcinoembryonic antigen (CEA, CD66e, CEACAM-5) is a cell-surface-bound glycoprotein overexpressed and released by many solid tumors that has an autocrine function in cancer cell survival and differentiation. Soluble CEA released by tumors is present in the circulation of patients with cancer, where it is used as a marker for cancer progression, but whether this form of CEA exerts any effects in the tumor microenvironment is unknown. Here, we present evidence that soluble CEA is sufficient to induce proangiogenic endothelial cell behaviors, including adhesion, spreading, proliferation, and migration in vitro and tumor microvascularization in vivo. CEA-induced activation of endothelial cells was dependent on integrin β-3 signals that activate the focal-adhesion kinase and c-Src kinase and their downstream MAP-ERK kinase/extracellular signal regulated kinase and phosphoinositide 3-kinase/Akt effector pathways. Notably, while interference with VEGF signaling had no effect on CEA-induced endothelial cell activation, downregulation with the CEA receptor in endothelial cells attenuated CEA-induced signaling and tumor angiogenesis. Corroborating these results clinically, we found that tumor microvascularization was higher in patients with colorectal cancer exhibiting higher serum levels of soluble CEA. Together, our results elucidate a novel function for soluble CEA in tumor angiogenesis.
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Affiliation(s)
- Kira H Bramswig
- Authors' Affiliations: Clinical Division of Oncology, Department of Medicine I and Comprehensive Cancer Center; Institute of Clinical Pathology; Department of Vascular Biology and Thrombosis Research, Centre for Bio-Molecular Medicine and Pharmacology, Medical University of Vienna, Vienna, Austria; and Tumor Immunology Laboratory, LIFE-Center, Klinikum Grosshadern, Ludwig-Maximilians-University Munich, Munich, Germany
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Morral-Ruíz G, Melgar-Lesmes P, Solans C, García-Celma M. Multifunctional polyurethane–urea nanoparticles to target and arrest inflamed vascular environment: A potential tool for cancer therapy and diagnosis. J Control Release 2013; 171:163-71. [DOI: 10.1016/j.jconrel.2013.06.027] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 06/21/2013] [Accepted: 06/24/2013] [Indexed: 12/22/2022]
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32
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García-Martín A, Acitores A, Maycas M, Villanueva-Peñacarrillo ML, Esbrit P. Src kinases mediate VEGFR2 transactivation by the osteostatin domain of PTHrP to modulate osteoblastic function. J Cell Biochem 2013; 114:1404-13. [DOI: 10.1002/jcb.24482] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Accepted: 12/06/2012] [Indexed: 12/12/2022]
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Jiang L, Song L, Wu J, Yang Y, Zhu X, Hu B, Cheng SY, Li M. Bmi-1 promotes glioma angiogenesis by activating NF-κB signaling. PLoS One 2013; 8:e55527. [PMID: 23383216 PMCID: PMC3561301 DOI: 10.1371/journal.pone.0055527] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2012] [Accepted: 12/27/2012] [Indexed: 01/17/2023] Open
Abstract
Angiogenesis in glioma is associated with the poor prognosis of the disease and closely correlates with the highly invasive phenotype of glioma cells, which represents the most challenging impediment against the currently glioma treatments. Bmi-1, an onco-protein, has been implicated in the progression of various human cancers, including gliomas, whereas its role in glioma angiogenesis remains unclear. Our current study examined the effects of Bmi-1 on glioma angiogenesis in vitro as well as in vivo. We found that overexpression of Bmi-1 enhanced, whereas knockdown of Bmi-1 diminished, the capability of glioma cells to induce tubule formation and migration of endothelial cells and neovascularization in chicken chorioallantoic membrane. In vivo, Bmi-1 overexpression and knockdown, respectively, promoted and inhibited angiogenesis in orthotopically transplanted human gliomas. Furthermore, NF-κB activity and VEGF-C expression was induced by Bmi-1 overexpression, whereas Bmi-1 knockdown attenuated NF-κB signaling and decreased VEGF-C expression. Additionally suppression of NF-κB activity using a specific chemical inhibitor abrogated the NF-κB activation and the pro-angiogenic activities of glioma cells. Together, our data suggest that Bmi-1 plays an important role in glioma angiogenesis and therefore could represent a potential target for anti-angiogenic therapy against the disease.
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Affiliation(s)
- Lili Jiang
- Department of Pathophysiology, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Libing Song
- Department of Experimental Research, Cancer Center, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jueheng Wu
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Chinese Ministry of Education, Guangzhou, Guangdong, China
| | - Yi Yang
- Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Chinese Ministry of Education, Guangzhou, Guangdong, China
| | - Xun Zhu
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Chinese Ministry of Education, Guangzhou, Guangdong, China
| | - Bo Hu
- Department of Neurology, Northwestern Brain Tumor Institute, Center for Genetic Medicine and The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Shi-Yuan Cheng
- Department of Neurology, Northwestern Brain Tumor Institute, Center for Genetic Medicine and The Robert H. Lurie Comprehensive Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, Illinois, United States of America
| | - Mengfeng Li
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, Guangdong, China
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Chinese Ministry of Education, Guangzhou, Guangdong, China
- * E-mail:
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34
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Surekha KL, Waghchoude M, Ghaskadbi S. Enhancement of angiogenesis by a 27 kDa lectin from perivitelline fluid of horseshoe crab embryos through upregulation of VEGF and its receptor. JOURNAL OF NATURAL PRODUCTS 2013; 76:117-120. [PMID: 23316979 DOI: 10.1021/np3005198] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Angiogenesis, the expansion of a capillary network, is implicated in several pathological conditions. Drug-based inhibition of angiogenesis is being explored as therapy. Conversely, therapeutic angiogenesis contributes to control conditions such as ischemia. Here we report pro-angiogenic activity of perivitelline fluid (PVF) from Indian horseshoe crab embryos and one of its purified fractions, a 27 kDa lectin, using the chick embryonic chorioallantoic membrane assay. Enhancement in number and diameter of blood vessels after treatment with PVF and lectin suggested their pro-angiogenic effect. Quantitative RT-PCR showed that this effect is mediated through modulation of expression of VEGF and VEGFR-2/kinase domain receptor genes.
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Affiliation(s)
- K L Surekha
- Zoology Group, Division of Animal Sciences, Agharkar Research Institute, Pune-411 004, India
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García-Aranda MI, González-López S, Santiveri CM, Gagey-Eilstein N, Reille-Seroussi M, Martín-Martínez M, Inguimbert N, Vidal M, García-López MT, Jiménez MA, González-Muñiz R, Pérez de Vega MJ. Helical peptides from VEGF and Vammin hotspots for modulating the VEGF–VEGFR interaction. Org Biomol Chem 2013; 11:1896-905. [DOI: 10.1039/c3ob27312a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Flexible or fixed: a comparative review of linear and cyclic cancer-targeting peptides. Future Med Chem 2012; 4:1601-18. [PMID: 22917248 DOI: 10.4155/fmc.12.75] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Peptides can serve as versatile cancer-targeting ligands and have been used for clinically relevant applications such as cancer imaging and therapy. A current and long-standing focus within peptide research is the creation of structurally constrained peptides generated through cyclization. Cyclization is envisioned to enhance the selective binding, uptake, potency and stability of linear precursors. This review compares closely related linear and cyclic peptides in these respects. Peptide cyclization generally improves the selective binding and stability of linear precursors; however, not all cyclization strategies and constrained geometries enhance these properties to the same extent. In some instances, linear analogues actually have better cancer-targeting properties compared with their cyclic counterparts. Although cyclization does not necessarily improve the cancer-targeting properties of linear analogues, cyclic peptides may obtain properties that allow them to be used for additional applications. This review aims to convey the advantages and limitations of cyclic cancer-targeting peptides.
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Kaumaya PTP, Foy KC. Peptide vaccines and targeting HER and VEGF proteins may offer a potentially new paradigm in cancer immunotherapy. Future Oncol 2012; 8:961-87. [PMID: 22894670 DOI: 10.2217/fon.12.95] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The ErbB family (HER-1, HER-2, HER-3 and HER-4) of receptor tyrosine kinases has been the focus of cancer immunotherapeutic strategies while antiangiogenic therapies have focused on VEGF and its receptors VEGFR-1 and VEGFR-2. Agents targeting receptor tyrosine kinases in oncology include therapeutic antibodies to receptor tyrosine kinase ligands or the receptors themselves, and small-molecule inhibitors. Many of the US FDA-approved therapies targeting HER-2 and VEGF exhibit unacceptable toxicities, and show problems of efficacy, development of resistance and unacceptable safety profiles that continue to hamper their clinical progress. The combination of different peptide vaccines and peptidomimetics targeting specific molecular pathways that are dysregulated in tumors may potentiate anticancer immune responses, bypass immune tolerance and circumvent resistance mechanisms. The focus of this review is to discuss efforts in our laboratory spanning two decades of rationally developing peptide vaccines and therapeutics for breast cancer. This review highlights the prospective benefit of a new, untapped category of therapies biologically targeted to EGF receptor (HER-1), HER-2 and VEGF with potential peptide 'blockbusters' that could lay the foundation of a new paradigm in cancer immunotherapy by creating clinical breakthroughs for safe and efficacious cancer cures.
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Affiliation(s)
- Pravin T P Kaumaya
- Departments of Obstetrics & Gynecology, OSU Wexner Medical Center, James Cancer Hospital & Solove Research Institute & the Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210, USA.
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Rouge P, Dassonville-Klimpt A, Cézard C, Boudesocque S, Ourouda R, Amant C, Gaboriau F, Forfar I, Guillon J, Guillon E, Vanquelef E, Cieplak P, Dupradeau FY, Dupont L, Sonnet P. Synthesis, Physicochemical Studies, Molecular Dynamics Simulations, and Metal-Ion-Dependent Antiproliferative and Antiangiogenic Properties of Cone ICL670-Substituted Calix[4]arenes. Chempluschem 2012; 77:1001-1016. [PMID: 25599014 DOI: 10.1002/cplu.201200141] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Iron chelators, through their capacity to modulate the iron concentration in cells, are promising molecules for cancer chemotherapy. Chelators with high lipophilicity easily enter into cells and deplete the iron intracellular pool. Consequently, iron-dependent enzymes, such as ribonucleotide reductase, which is over-expressed in cancer cells, become nonfunctional. A series of calix[4]arene derivatives substituted at the lower rim by ICL670, a strong FeIII chelator, have been synthesized. Physicochemical properties and antiproliferative, angiogenesis, and tumorigenesis effects of two calix[4]arenes mono- (5a) or disubstituted (5b) with ICL670 have been studied. These compounds form metal complexes in a ratio of one to two ligands per FeIII atom as shown by combined analyses of the protometric titration curves and ESIMS spectra. The grafting of an ICL670 group on a calix[4]arene core does not significantly alter the acid-base properties, but improves the iron-chelating and lipophilicity properties. The best antiproliferative and anti-angiogenic results were obtained with calix[4]arene ligand 5a, which possesses the highest corresponding properties. Analyses of molecular dynamics simulations performed on the two calix[4]arenes provide three-dimensional structures of the complexes and proved 5a to be the most stable upon complexation.
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Affiliation(s)
- Pascal Rouge
- Laboratoire des Glucides, CNRS FRE 3517, UFR de Pharmacie, Université de Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens cedex 1 (France)
| | - Alexandra Dassonville-Klimpt
- Laboratoire des Glucides, CNRS FRE 3517, UFR de Pharmacie, Université de Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens cedex 1 (France)
| | - Christine Cézard
- Laboratoire des Glucides, CNRS FRE 3517, UFR de Pharmacie, Université de Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens cedex 1 (France)
| | - Stéphanie Boudesocque
- Institut de Chimie Moléculaire de Reims (ICMR), UMR CNRS 7312, UFR des Sciences Exactes et Naturelles, Université de Reims Champagne-Ardenne, Reims (France)
| | - Roger Ourouda
- Hémostase et remodelage vasculaire post-ischémique, EA3801, Université de Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens cedex 1 (France)
| | - Carole Amant
- Hémostase et remodelage vasculaire post-ischémique, EA3801, Université de Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens cedex 1 (France) ; Laboratoire d'Oncobiologie Moléculaire, CHU d'Amiens, Amiens (France)
| | - François Gaboriau
- Inserm U991 (EA/MDC), Université de Rennes I, Hôpital Pontchaillou, Rennes (France)
| | - Isabelle Forfar
- CNRS FRE 3396 (Pharmacochimie), UFR de Pharmacie, Université de Bordeaux Segalen, Bordeaux (France)
| | - Jean Guillon
- CNRS FRE 3396 (Pharmacochimie), UFR de Pharmacie, Université de Bordeaux Segalen, Bordeaux (France)
| | - Emmanuel Guillon
- Institut de Chimie Moléculaire de Reims (ICMR), UMR CNRS 7312, UFR des Sciences Exactes et Naturelles, Université de Reims Champagne-Ardenne, Reims (France)
| | - Enguerran Vanquelef
- Laboratoire des Glucides, CNRS FRE 3517, UFR de Pharmacie, Université de Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens cedex 1 (France)
| | - Piotr Cieplak
- Sandford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037 (USA)
| | - François-Yves Dupradeau
- Laboratoire des Glucides, CNRS FRE 3517, UFR de Pharmacie, Université de Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens cedex 1 (France)
| | - Laurent Dupont
- Institut de Chimie Moléculaire de Reims (ICMR), UMR CNRS 7312, UFR des Sciences Exactes et Naturelles, Université de Reims Champagne-Ardenne, Reims (France)
| | - Pascal Sonnet
- Laboratoire des Glucides, CNRS FRE 3517, UFR de Pharmacie, Université de Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens cedex 1 (France)
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Kim SR, Lee KS, Lee KB, Lee YC. Recombinant IGFBP-3 inhibits allergic lung inflammation, VEGF production, and vascular leak in a mouse model of asthma. Allergy 2012; 67:869-77. [PMID: 22563687 DOI: 10.1111/j.1398-9995.2012.02837.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2012] [Indexed: 01/15/2023]
Abstract
BACKGROUND Vascular endothelial growth factor (VEGF) plays a pro-inflammatory mediator as well as a vascular permeability factor in bronchial asthma. Insulin-like growth factor (IGF)-I is also involved in the inflammatory process associated with bronchial asthma and stimulates VEGF expression. The IGF-binding proteins (IGFBPs), especially IGFBP-3, display distinctive properties and can interfere with various biological processes. METHODS In this study, an ovalbumin (OVA)-induced murine model of allergic airway disease was used to investigate which mechanism is implicated in the preventive and therapeutic actions of IGFBP-3 administered exogenously on allergen-induced bronchial inflammation and airway hyper-responsiveness, in particular focusing on the regulation of VEGF expression. RESULTS Administration of recombinant human IGFBP-3 to OVA-inhaled mice substantially attenuated the increases in hypoxia-inducible factor (HIF)-α activity, IGF-I production, and VEGF protein levels in the lung. In addition, the blockade of IGF-I action decreased the OVA-induced VEGF expression, airway inflammation, and bronchial hyper-responsiveness. The administration of recombinant human IGFBP-3 or CBO-P11 also reduced significantly increases in inflammatory cells, airway hyper-responsiveness, levels of IL-4, IL-5, IL-13, and vascular permeability in the lung of OVA-inhaled mice. Moreover, when recombinant human IGFBP-3 was administered after the completion of OVA inhalation, these therapeutic effects of IGFBP-3 were also observed. CONCLUSIONS These results indicate that IGFBP-3 administered exogenously may attenuate antigen-induced airway inflammation and hyper-responsiveness through the modulation of vascular leakage and VEGF expression mediated by HIF-1α/HIF-2α signaling as well as IGF-I action in allergic airway disease of mice.
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Affiliation(s)
- S. R. Kim
- Department of Internal Medicine; Research Center for Pulmonary Disorders; Chonbuk National University Medical School; Jeonju; South Korea
| | - K. S. Lee
- Department of Internal Medicine; Research Center for Pulmonary Disorders; Chonbuk National University Medical School; Jeonju; South Korea
| | - K. B. Lee
- Department of Internal Medicine; Research Center for Pulmonary Disorders; Chonbuk National University Medical School; Jeonju; South Korea
| | - Y. C. Lee
- Department of Internal Medicine; Research Center for Pulmonary Disorders; Chonbuk National University Medical School; Jeonju; South Korea
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Gautier B, Miteva MA, Goncalves V, Huguenot F, Coric P, Bouaziz S, Seijo B, Gaucher JF, Broutin I, Garbay C, Lesnard A, Rault S, Inguimbert N, Villoutreix BO, Vidal M. Targeting the proangiogenic VEGF-VEGFR protein-protein interface with drug-like compounds by in silico and in vitro screening. ACTA ACUST UNITED AC 2012; 18:1631-9. [PMID: 22195565 DOI: 10.1016/j.chembiol.2011.10.016] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2011] [Revised: 09/16/2011] [Accepted: 10/24/2011] [Indexed: 12/29/2022]
Abstract
Protein-protein interactions play a central role in medicine, and their modulation with small organic compounds remains an enormous challenge. Because it has been noted that the macromolecular complexes modulated to date have a relatively pronounced binding cavity at the interface, we decided to perform screening experiments over the vascular endothelial growth factor receptor (VEGFR), a validated target for antiangiogenic treatments with a very flat interface. We focused the study on the VEGFR-1 D2 domain, and 20 active compounds were identified. These small compounds contained a (3-carboxy-2-ureido)thiophen unit and had IC(50) values in the low micromolar range. The most potent compound inhibited the VEGF-induced VEGFR-1 transduction pathways. Our findings suggest that our best hit may be a promising scaffold to probe this macromolecular complex and for the development of treatments of VEGFR-1-dependent diseases.
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Affiliation(s)
- Benoit Gautier
- Université Paris Descartes, CNRS UMR 8601, UFR biomédicale, 75006 Paris, France
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41
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Wu J, Jiang Y, Yang W, He Z, Meng S, Zhang Q, Lin M, Zhang H, Li W, Yang Y, Jia Y, Qian L, Lu D, Cai W, Luo G, Wang Y, Zhu X, Li M. Dual function of RGD-modified VEGI-192 for breast cancer treatment. Bioconjug Chem 2012; 23:796-804. [PMID: 22455451 DOI: 10.1021/bc2006576] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Identification of endogenous angiogenesis inhibitors has led to development of an increasingly attractive strategy for cancer therapy and other angiogenesis-driven diseases. Vascular endothelial growth inhibitor (VEGI), a potent and relatively nontoxic endogenous angiogenesis inhibitor, has been intensively studied, and this work shed new light on developing promising anti-angiogenic strategies. It is well-documented that the RGD (Arg-Gly-Asp) motif exhibits high binding affinity to integrin α(v)β(3), which is abundantly expressed in cancer cells and specifically associated with angiogenesis on tumors. Here, we designed a fusion protein containing the special RGD-4C motif sequence and VEGI-192, aimed at offering more effective multiple targeting to tumor cells and tumor vasculature, and higher anti-angiogenic and antitumor efficacy. Functional tests demonstrated that the purified recombinant human RGD-VEGI-192 protein (rhRGD-VEGI-192) potently inhibited endothelial growth in vitro and suppressed neovascularization in chicken chorioallantoic membrane in vivo, to a higher degree as compared with rhVEGI-192 protein. More importantly, rhRGD-VEGI-192, but not rhVEGI-192 protein, could potentially target MDA-MB-435 breast tumor cells, significantly inhibiting growth of MDA-MB-435 cells in vitro, triggered apoptosis in MDA-MB-435 cells by activation of caspase-8 as well as caspase-3, which was mediated by activating the JNK signaling associated with upregulation of pro-apoptotic protein Puma, and consequently led to the observed significant antitumor effect in vivo against a human breast cancer xenograft. Our study indicated that the RGD-VEGI-192 fusion protein might represent a novel anti-angiogenic and antitumor strategy.
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Affiliation(s)
- Jueheng Wu
- Key Laboratory of Tropical Disease Control (Sun Yat-sen University), Ministry of Education, 74 Zhongshan Road II, Guangzhou 510080, China
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42
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Jiang L, Lin C, Song L, Wu J, Chen B, Ying Z, Fang L, Yan X, He M, Li J, Li M. MicroRNA-30e* promotes human glioma cell invasiveness in an orthotopic xenotransplantation model by disrupting the NF-κB/IκBα negative feedback loop. J Clin Invest 2011; 122:33-47. [PMID: 22156201 DOI: 10.1172/jci58849] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Accepted: 10/19/2011] [Indexed: 01/21/2023] Open
Abstract
Constitutive activation of NF-κB is a frequent event in human cancers, playing important roles in cancer development and progression. In nontransformed cells, NF-κB activation is tightly controlled by IκBs. IκBs bind NF-κB in the cytoplasm, preventing it from translocating to the nucleus to modulate gene expression. Stimuli that activate NF-κB signaling trigger IκB degradation, enabling nuclear translocation of NF-κB. Among the genes regulated by NF-κB are those encoding the IκBs, providing a negative feedback loop that limits NF-κB activity. How transformed cells override this NF-κB/IκB negative feedback loop remains unclear. Here, we report in human glioma cell lines that microRNA-30e* (miR-30e*) directly targets the IκBα 3ι-UTR and suppresses IκBα expression. Overexpression of miR-30e* in human glioma cell lines led to hyperactivation of NF-κB and enhanced expression of NF-κB-regulated genes, which promoted glioma cell invasiveness in in vitro assays and in an orthotopic xenotransplantation model. These effects of miR-30e* were shown to be clinically relevant, as miR-30e* was found to be upregulated in primary human glioma cells and correlated with malignant progression and poor survival. Hence, miR-30e* provides an epigenetic mechanism that disrupts the NF-κB/IκBα loop and may represent a new therapeutic target and prognostic marker.
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Affiliation(s)
- Lili Jiang
- Department of Microbiology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
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Disulfide and amide-bridged cyclic peptide analogues of the VEGF81–91 fragment: Synthesis, conformational analysis and biological evaluation. Bioorg Med Chem 2011; 19:7526-33. [DOI: 10.1016/j.bmc.2011.10.032] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 10/11/2011] [Accepted: 10/12/2011] [Indexed: 01/17/2023]
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Diana D, Basile A, De Rosa L, Di Stasi R, Auriemma S, Arra C, Pedone C, Turco MC, Fattorusso R, D'Andrea LD. β-hairpin peptide that targets vascular endothelial growth factor (VEGF) receptors: design, NMR characterization, and biological activity. J Biol Chem 2011; 286:41680-41691. [PMID: 21969375 DOI: 10.1074/jbc.m111.257402] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
VEGF receptors have been the target of intense research aimed to develop molecules able to inhibit or stimulate angiogenesis. Based on the x-ray structure of the complex placental growth factor-VEGF receptor 1(D2), we designed a VEGF receptor-binding peptide reproducing the placental growth factor β-hairpin region Gln(87)-Val(100) that is involved in receptor recognition. A conformational analysis showed that the designed peptide adopts the expected fold in pure water. Moreover, a combination of NMR interaction analysis and cell binding studies were used to demonstrate that the peptide targets VEGF receptors. The VEGF receptor 1(D2)-interacting residues were characterized at the molecular level, and they correspond to the residues recognizing the placental growth factor sequence Gln(87)-Val(100). Finally, the peptide biological activity was characterized in vitro and in vivo, and it showed a VEGF-like behavior. Indeed, the peptide activated VEGF-dependent intracellular pathways, induced endothelial cell proliferation and rescue from apoptosis, and promoted angiogenesis in vivo. This compound is one of the few peptides known with proangiogenic activity, which makes it a candidate for the development of a novel peptide-based drug for medical applications in therapeutic angiogenesis.
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Affiliation(s)
- Donatella Diana
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, via Mezzocannone 16, 80134 Napoli, Italy
| | - Anna Basile
- Dipartimento di Scienze Farmaceutiche e Biomediche, Università di Salerno, via Ponte don Melillo, 84084 Fisciano (Salerno), Italy
| | - Lucia De Rosa
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, via Mezzocannone 16, 80134 Napoli, Italy
| | - Rossella Di Stasi
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, via Mezzocannone 16, 80134 Napoli, Italy
| | - Sara Auriemma
- Dipartimento delle Scienze Biologiche, Università di Napoli "Federico II," via Mezzocannone 16, 80134 Napoli, Italy
| | - Claudio Arra
- Istituto Nazionale Tumori "Fondazione G. Pascale," via Mariano Semmola 49, 80131 Napoli, Italy
| | - Carlo Pedone
- Dipartimento delle Scienze Biologiche, Università di Napoli "Federico II," via Mezzocannone 16, 80134 Napoli, Italy
| | - Maria Caterina Turco
- Dipartimento di Scienze Farmaceutiche e Biomediche, Università di Salerno, via Ponte don Melillo, 84084 Fisciano (Salerno), Italy
| | - Roberto Fattorusso
- Dipartimento di Scienze Ambientali, Seconda Università di Napoli, via Antonio Vivaldi 43, 81100 Caserta, Italy
| | - Luca Domenico D'Andrea
- Istituto di Biostrutture e Bioimmagini, Consiglio Nazionale delle Ricerche, via Mezzocannone 16, 80134 Napoli, Italy.
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First Quantitative Imaging of Organic Fluorine within Angiogenic Tissues by Particle Induced Gamma-Ray Emission (PIGE) Analysis: First PIGE Organic Fluorine Imaging. Pharmaceutics 2011; 3:88-106. [PMID: 24310427 PMCID: PMC3857039 DOI: 10.3390/pharmaceutics3010088] [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: 12/31/2010] [Revised: 02/28/2011] [Accepted: 03/07/2011] [Indexed: 11/17/2022] Open
Abstract
PET (Positron Emission Tomography) allows imaging of the in vivo distribution of biochemical compounds labeled with a radioactive tracer, mainly 18F-FDG (2-deoxy-2-[18F] fluoro-D-glucose). 18F only allows a relatively poor spatial resolution (2-3 mm) which does not allow imaging of small tumors or specific small size tissues, e.g. vasculature. Unfortunately, angiogenesis is a key process in various physiologic and pathologic processes and is, for instance, involved in modern anticancer approaches. Thus ability to visualize angiogenesis could allow early diagnosis and help to monitor the response of cancer to specific chemotherapies. Therefore, indirect analytical techniques are required to assess the localization of fluorinated compounds at a micrometric scale. Multimodality imaging approaches could provide accurate information on the metabolic activity of the target tissue. In this article, PIGE method (Particle Induced Gamma-ray Emission) was used to determine fluorinated tracers by the nuclear reaction of 19F(p,p'γ)19F in tissues. The feasibility of this approach was assessed on polyfluorinated model glucose compounds and novel peptide-based tracer designed for angiogenesis imaging. Our results describe the first mapping of the biodistribution of fluorinated compounds in both vascularized normal tissue and tumor tissue.
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46
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“Click” Conjugation of Peptide on the Surface of Polymeric Nanoparticles for Targeting Tumor Angiogenesis. Pharm Res 2011; 28:1631-42. [DOI: 10.1007/s11095-011-0398-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Accepted: 02/08/2011] [Indexed: 10/18/2022]
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47
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García-Aranda MI, Marrero P, Gautier B, Martín-Martínez M, Inguimbert N, Vidal M, García-López MT, Jiménez MA, González-Muñiz R, Vega MJPD. Parallel solid-phase synthesis of a small library of linear and hydrocarbon-bridged analogues of VEGF81–91: Potential biological tools for studying the VEGF/VEGFR-1 interaction. Bioorg Med Chem 2011; 19:1978-86. [DOI: 10.1016/j.bmc.2011.01.056] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 01/24/2011] [Accepted: 01/27/2011] [Indexed: 11/26/2022]
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Vicari D, Foy KC, Liotta EM, Kaumaya PTP. Engineered conformation-dependent VEGF peptide mimics are effective in inhibiting VEGF signaling pathways. J Biol Chem 2011; 286:13612-25. [PMID: 21321115 DOI: 10.1074/jbc.m110.216812] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Angiogenesis, or formation of new blood vessels, is crucial to cancer tumor growth. Tumor growth, progression, and metastasis are critically influenced by the production of the pro-angiogenic vascular endothelial growth factor (VEGF). Promising anti-angiogenic drugs are currently available; however, their susceptibilities to drug resistance and long term toxicity are serious impediments to their use, thus requiring the development of new therapeutic approaches for safe and effective angiogenic inhibitors. In this work, peptides were designed to mimic the VEGF-binding site to its receptor VEGFR-2. The VEGF conformational peptide mimic, VEGF-P3(CYC), included two artificial cysteine residues, which upon cyclization constrained the peptide in a loop native-like conformation to better mimic the anti-parallel structure of VEGF. The engineered cyclic VEGF mimic peptide demonstrated the highest affinity to VEGFR-2 by surface plasmon resonance assay. The VEGF peptide mimics were evaluated as inhibitors in several in vitro assays in which VEGF-dependent signaling pathways were observed. All VEGF mimics inhibited VEGFR-2 phosphorylation with VEGF-P3(CYC) showing the highest inhibitory effects when compared with unstructured peptides. Additionally, we show in several angiogenic in vitro assays that all the VEGF mimics inhibited endothelial cell proliferation, migration, and network formation with the conformational VEGF-P3 (CYC) being the best. The VEGF-P3(CYC) also caused a significant delay in tumor development in a transgenic model of VEGF(+/-)Neu2-5(+/-). These results indicate that the structure-based design is important for the development of this peptidomimetic and for its anti-angiogenic effects.
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Affiliation(s)
- Daniele Vicari
- Department of Microbiology, Ohio State University, Columbus, Ohio 43210, USA
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Basile A, Del Gatto A, Diana D, Di Stasi R, Falco A, Festa M, Rosati A, Barbieri A, Franco R, Arra C, Pedone C, Fattorusso R, Turco MC, D’Andrea LD. Characterization of a Designed Vascular Endothelial Growth Factor Receptor Antagonist Helical Peptide with Antiangiogenic Activity in Vivo. J Med Chem 2011; 54:1391-400. [DOI: 10.1021/jm101435r] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Anna Basile
- Dipartimento di Scienze Farmaceutiche, Università di Salerno and BioUniverSA SRL, Salerno, Italy
| | - Annarita Del Gatto
- Istituto di Biostrutture e Bioimmagini, CNR, Via Mezzocannone 16, 80134 Napoli, Italy
| | - Donatella Diana
- Istituto di Biostrutture e Bioimmagini, CNR, Via Mezzocannone 16, 80134 Napoli, Italy
| | - Rossella Di Stasi
- Istituto di Biostrutture e Bioimmagini, CNR, Via Mezzocannone 16, 80134 Napoli, Italy
| | - Antonia Falco
- Dipartimento di Scienze Farmaceutiche, Università di Salerno and BioUniverSA SRL, Salerno, Italy
| | - Michelina Festa
- Dipartimento di Scienze Farmaceutiche, Università di Salerno and BioUniverSA SRL, Salerno, Italy
| | - Alessandra Rosati
- Dipartimento di Scienze Farmaceutiche, Università di Salerno and BioUniverSA SRL, Salerno, Italy
| | - Antonio Barbieri
- Istituto Nazionale Tumori “Fondazione G. Pascale”, Napoli, Italy
| | - Renato Franco
- Istituto Nazionale Tumori “Fondazione G. Pascale”, Napoli, Italy
| | - Claudio Arra
- Istituto Nazionale Tumori “Fondazione G. Pascale”, Napoli, Italy
| | - Carlo Pedone
- Dipartimento delle Scienze Biologiche, Università di Napoli “Federico II”, Napoli, Italy
| | - Roberto Fattorusso
- Dipartimento di Scienze Ambientali, Seconda Università di Napoli, Caserta, Italy
| | - Maria Caterina Turco
- Dipartimento di Scienze Farmaceutiche, Università di Salerno and BioUniverSA SRL, Salerno, Italy
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Kim SR, Lee KS, Park HS, Park SJ, Min KH, Moon H, Puri KD, Lee YC. HIF-1α inhibition ameliorates an allergic airway disease via VEGF suppression in bronchial epithelium. Eur J Immunol 2010; 40:2858-69. [PMID: 20827786 DOI: 10.1002/eji.200939948] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Hypoxia-inducible factor-1α (HIF-1α) plays a critical role in immune and inflammatory responses. One of the HIF-1α target genes is vascular endothelial growth factor (VEGF), which is a potent stimulator of inflammation, airway remodeling, and physiologic dysregulation in allergic airway diseases. Using OVA-treated mice and murine tracheal epithelial cells, the signaling networks involved in HIF-1α activation and the role of HIF-1α in the pathogenesis of allergic airway disease were investigated. Transfection of airway epithelial cells with HIF-1α siRNA suppressed VEGF expression. In addition, the increased levels of HIF-1α and VEGF in lung tissues after OVA inhalation were substantially decreased by an HIF-1α inhibitor, 2-methoxyestradiol. Our data also show that the increased numbers of inflammatory cells, increased airway hyperresponsiveness, levels of IL-4, IL-5, IL-13, and vascular permeability in the lungs after OVA inhalation were significantly reduced by 2-methoxyestradiol or a VEGF inhibitor, CBO-P11. Moreover, we found that inhibition of the PI3K p110δ isoform (PI3K-δ) or HIF-1α reduced OVA-induced HIF-1α activation in airway epithelial cells. These findings indicate that HIF-1α inhibition may attenuate antigen-induced airway inflammation and hyperresponsiveness through the modulation of vascular leakage mediated by VEGF, and that PI3K-δ signaling may be involved in the allergen-induced HIF-1α activation.
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Affiliation(s)
- So Ri Kim
- Department of Internal Medicine and Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Jeonju, South Korea
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