1
|
Sutherland M, Gordon A, Al-Shammari FOFO, Throup A, Cilia La Corte A, Philippou H, Shnyder SD, Patterson LH, Sheldrake HM. Synthesis and Biological Evaluation of Cyclobutane-Based β3 Integrin Antagonists: A Novel Approach to Targeting Integrins for Cancer Therapy. Cancers (Basel) 2023; 15:4023. [PMID: 37627051 PMCID: PMC10452181 DOI: 10.3390/cancers15164023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/25/2023] [Accepted: 08/06/2023] [Indexed: 08/27/2023] Open
Abstract
The Arg-Gly-Asp (RGD)-binding family of integrin receptors, and notably the β3 subfamily, are key to multiple physiological processes involved in tissue development, cancer proliferation, and metastatic dissemination. While there is compelling preclinical evidence that both αvβ3 and αIIbβ3 are important anticancer targets, most integrin antagonists developed to target the β3 integrins are highly selective for αvβ3 or αIIbβ3. We report the design, synthesis, and biological evaluation of a new structural class of ligand-mimetic β3 integrin antagonist. These new antagonists combine a high activity against αvβ3 with a moderate affinity for αIIbβ3, providing the first evidence for a new approach to integrin targeting in cancer.
Collapse
Affiliation(s)
- Mark Sutherland
- Institute of Cancer Therapeutics, University of Bradford, Bradford BD7 1DP, UK
| | - Andrew Gordon
- Institute of Cancer Therapeutics, University of Bradford, Bradford BD7 1DP, UK
| | | | - Adam Throup
- Institute of Cancer Therapeutics, University of Bradford, Bradford BD7 1DP, UK
| | - Amy Cilia La Corte
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds LS2 9JT, UK
| | - Helen Philippou
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds LS2 9JT, UK
| | - Steven D. Shnyder
- Institute of Cancer Therapeutics, University of Bradford, Bradford BD7 1DP, UK
| | | | - Helen M. Sheldrake
- Institute of Cancer Therapeutics, University of Bradford, Bradford BD7 1DP, UK
| |
Collapse
|
2
|
Zhang J, Li W, Wang W, Chen Q, Xu Z, Deng M, Zhou L, He G. Dual roles of FAK in tumor angiogenesis: A review focused on pericyte FAK. Eur J Pharmacol 2023; 947:175694. [PMID: 36967077 DOI: 10.1016/j.ejphar.2023.175694] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 03/16/2023] [Accepted: 03/24/2023] [Indexed: 03/31/2023]
Abstract
Focal adhesion kinase (FAK), also known as protein tyrosine kinase 2 (PTK2), is a ubiquitously expressed non-receptor tyrosine kinase, that plays a pivotal role in integrin-mediated signal transduction. Endothelial FAK is upregulated in many types of cancer and promotes tumorigenesis and tumor progression. However, recent studies have shown that pericyte FAK has the opposite effect. This review article dissects the mechanisms, by which endothelial cells (ECs) and pericyte FAK regulate angiogenesis, with an emphasis on the Gas6/Axl pathway. In particular, this article discusses the role of pericyte FAK loss on angiogenesis during tumorigenesis and metastasis. In addition, the existing challenges and future application of drug-based anti-FAK targeted therapies will be discussed to provide a theoretical basis for further development and use of FAK inhibitors.
Collapse
|
3
|
Sen S, Spasic A, Sinha A, Wang J, Bush M, Li J, Nešić D, Zhou Y, Angiulli G, Morgan P, Salas-Estrada L, Takagi J, Walz T, Coller BS, Filizola M. Structure-Based Discovery of a Novel Class of Small-Molecule Pure Antagonists of Integrin αVβ3. J Chem Inf Model 2022; 62:5607-5621. [PMID: 36279366 PMCID: PMC9767310 DOI: 10.1021/acs.jcim.2c00999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Inhibitors of integrin αVβ3 have therapeutic promise for a variety of diseases. Most αVβ3-targeting small molecules patterned after the RGD motif are partial agonists because they induce a high-affinity, ligand-binding conformation and prime the receptor to bind the ligand without an activating stimulus, in part via a charge-charge interaction between their aspartic acid carboxyl group and the metal ion in the metal-ion-dependent adhesion site (MIDAS). Building upon our previous studies on the related integrin αIIbβ3, we searched for pure αVβ3 antagonists that lack this typical aspartic acid carboxyl group and instead engage through direct binding to one of the coordinating residues of the MIDAS metal ion, specifically β3 E220. By in silico screening of two large chemical libraries for compounds interacting with β3 E220, we indeed discovered a novel molecule that does not contain an acidic carboxyl group and does not induce the high-affinity, ligand-binding state of the receptor. Functional and structural characterization of a chemically optimized version of this compound led to the discovery of a novel small-molecule pure αVβ3 antagonist that (i) does not prime the receptor to bind the ligand and does not induce hybrid domain swing-out or receptor extension as judged by antibody binding and negative-stain electron microscopy, (ii) binds at the RGD-binding site as predicted by metadynamics rescoring of induced-fit docking poses and confirmed by a cryo-electron microscopy structure of the compound-bound integrin, and (iii) coordinates the MIDAS metal ion via a quinoline moiety instead of an acidic carboxyl group.
Collapse
Affiliation(s)
- Soumyo Sen
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1677, New York, New York10029, United States
| | - Aleksandar Spasic
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1677, New York, New York10029, United States
| | - Anjana Sinha
- Allen and Frances Adler Laboratory of Blood and Vascular Biology, The Rockefeller University, 1230 York Avenue, P.O. Box 309, New York, New York10065, United States
| | - Jialing Wang
- Laboratory of Molecular Electron Microscopy, The Rockefeller University, 1230 York Avenue, P.O. Box 219, New York, New York10065, United States
| | - Martin Bush
- Laboratory of Molecular Electron Microscopy, The Rockefeller University, 1230 York Avenue, P.O. Box 219, New York, New York10065, United States
| | - Jihong Li
- Allen and Frances Adler Laboratory of Blood and Vascular Biology, The Rockefeller University, 1230 York Avenue, P.O. Box 309, New York, New York10065, United States
| | - Dragana Nešić
- Allen and Frances Adler Laboratory of Blood and Vascular Biology, The Rockefeller University, 1230 York Avenue, P.O. Box 309, New York, New York10065, United States
| | - Yuchen Zhou
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1677, New York, New York10029, United States
| | - Gabriella Angiulli
- Laboratory of Molecular Electron Microscopy, The Rockefeller University, 1230 York Avenue, P.O. Box 219, New York, New York10065, United States
| | - Paul Morgan
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1677, New York, New York10029, United States
| | - Leslie Salas-Estrada
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1677, New York, New York10029, United States
| | - Junichi Takagi
- Laboratory of Protein Synthesis and Expression, Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka565-0871, Japan
| | - Thomas Walz
- Laboratory of Molecular Electron Microscopy, The Rockefeller University, 1230 York Avenue, P.O. Box 219, New York, New York10065, United States
| | - Barry S Coller
- Allen and Frances Adler Laboratory of Blood and Vascular Biology, The Rockefeller University, 1230 York Avenue, P.O. Box 309, New York, New York10065, United States
| | - Marta Filizola
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1677, New York, New York10029, United States
| |
Collapse
|
4
|
Rossatti P, Redpath GMI, Ziegler L, Samson GPB, Clamagirand CD, Legler DF, Rossy J. Rapid increase in transferrin receptor recycling promotes adhesion during T cell activation. BMC Biol 2022; 20:189. [PMID: 36002835 PMCID: PMC9400314 DOI: 10.1186/s12915-022-01386-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 08/09/2022] [Indexed: 11/26/2022] Open
Abstract
Background T cell activation leads to increased expression of the receptor for the iron transporter transferrin (TfR) to provide iron required for the cell differentiation and clonal expansion that takes place during the days after encounter with a cognate antigen. However, T cells mobilise TfR to their surface within minutes after activation, although the reason and mechanism driving this process remain unclear. Results Here we show that T cells transiently increase endocytic uptake and recycling of TfR upon activation, thereby boosting their capacity to import iron. We demonstrate that increased TfR recycling is powered by a fast endocytic sorting pathway relying on the membrane proteins flotillins, Rab5- and Rab11a-positive endosomes. Our data further reveal that iron import is required for a non-canonical signalling pathway involving the kinases Zap70 and PAK, which controls adhesion of the integrin LFA-1 and eventually leads to conjugation with antigen-presenting cells. Conclusions Altogether, our data suggest that T cells boost their iron importing capacity immediately upon activation to promote adhesion to antigen-presenting cells. Supplementary Information The online version contains supplementary material available at 10.1186/s12915-022-01386-0.
Collapse
Affiliation(s)
- Pascal Rossatti
- Biotechnology Institute Thurgau (BITg) at the University of Konstanz, CH-8280, Kreuzlingen, Switzerland
| | - Gregory M I Redpath
- EMBL Australia Node in Single Molecule Science, School of Medical Sciences, University of New South Wales, Sydney, Sydney, Australia
| | - Luca Ziegler
- Biotechnology Institute Thurgau (BITg) at the University of Konstanz, CH-8280, Kreuzlingen, Switzerland.,Department of Biology, University of Konstanz, Constance, Germany
| | - Guerric P B Samson
- Biotechnology Institute Thurgau (BITg) at the University of Konstanz, CH-8280, Kreuzlingen, Switzerland
| | - Camille D Clamagirand
- Biotechnology Institute Thurgau (BITg) at the University of Konstanz, CH-8280, Kreuzlingen, Switzerland
| | - Daniel F Legler
- Biotechnology Institute Thurgau (BITg) at the University of Konstanz, CH-8280, Kreuzlingen, Switzerland.,Department of Biology, University of Konstanz, Constance, Germany
| | - Jérémie Rossy
- Biotechnology Institute Thurgau (BITg) at the University of Konstanz, CH-8280, Kreuzlingen, Switzerland. .,Department of Biology, University of Konstanz, Constance, Germany.
| |
Collapse
|
5
|
Li J, Peng L, Chen Q, Ye Z, Zhao T, Hou S, Gu J, Hang Q. Integrin β1 in Pancreatic Cancer: Expressions, Functions, and Clinical Implications. Cancers (Basel) 2022; 14:cancers14143377. [PMID: 35884437 PMCID: PMC9318555 DOI: 10.3390/cancers14143377] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/02/2022] [Accepted: 07/07/2022] [Indexed: 02/07/2023] Open
Abstract
Simple Summary Pancreatic cancer (PC) is a highly aggressive malignant tumor with an extremely poor prognosis. Early diagnosis and treatment are key to improving the survival rate of PC patients. Emerging studies show that integrins might contribute to the pathogenesis of PC. This review presents the various signaling pathways that are mediated by integrins in PC and emphasizes the multiple functions of integrin β1 in malignant behaviors of PC. It also discusses the clinical significance of integrin β1 as well as integrin β1-based therapy in PC patients. Abstract Pancreatic cancer (PC) is characterized by rapid progression and a high mortality rate. The current treatment is still based on surgical treatment, supplemented by radiotherapy and chemotherapy, and new methods of combining immune and molecular biological treatments are being explored. Despite this, the survival rate of PC patients is still very disappointing. Therefore, clarifying the molecular mechanism of PC pathogenesis and developing precisely targeted drugs are key to improving PC prognosis. As the most common β subunit of the integrin family, integrin β1 has been proved to be closely related to the vascular invasion, distant metastasis, and survival of PC patients, and treatment targeting integrin β1 in PC has gained initial success in animal models. In this review, we summarize the various signaling pathways by which integrins are involved in PC, focusing on the roles of integrin β1 in the malignant behaviors of PC. Additionally, recent studies regarding the feasibility of integrin β1 as a diagnostic and prognostic biomarker in PC are also discussed. Finally, we present the progress of several integrin β1-based clinical trials to highlight the potential of integrin β1 as a target for personalized therapy in PC.
Collapse
Affiliation(s)
- Jiajia Li
- Department of Gastroenterology, The Affiliated Hospital of Yangzhou University, Yangzhou 225009, China; (J.L.); (S.H.)
| | - Liyao Peng
- Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing 210000, China;
| | - Qun Chen
- Pancreas Center, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210000, China;
| | - Ziping Ye
- Department of Gastroenterology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China;
| | - Tiantian Zhao
- Department of Clinical Medicine, Medical College, Yangzhou University, Yangzhou 225001, China;
| | - Sicong Hou
- Department of Gastroenterology, The Affiliated Hospital of Yangzhou University, Yangzhou 225009, China; (J.L.); (S.H.)
- Department of Clinical Medicine, Medical College, Yangzhou University, Yangzhou 225001, China;
| | - Jianguo Gu
- Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Sendai 81-8558, Japan
- Correspondence: (J.G.); (Q.H.); Tel.: +86-13-8145-8885 (Q.H.)
| | - Qinglei Hang
- Division of Regulatory Glycobiology, Institute of Molecular Biomembrane and Glycobiology, Tohoku Medical and Pharmaceutical University, Sendai 81-8558, Japan
- Department of Experimental Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
- Correspondence: (J.G.); (Q.H.); Tel.: +86-13-8145-8885 (Q.H.)
| |
Collapse
|
6
|
Dzobo K. Integrins Within the Tumor Microenvironment: Biological Functions, Importance for Molecular Targeting, and Cancer Therapeutics Innovation. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2021; 25:417-430. [PMID: 34191612 DOI: 10.1089/omi.2021.0069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Many cellular functions important for solid tumor initiation and progression are mediated by members of the integrin family, a diverse family of cell attachment receptors. With recent studies emphasizing the role of the tumor microenvironment (TME) in tumor initiation and progression, it is not surprising that considerable attention is being paid to integrins. Several integrin antagonists are under clinical trials, with many demonstrating promising activity in patients with different cancers. A deeper knowledge of the functions of integrins within the TME is still required and might lead to better inhibitors being discovered. Integrin expression is commonly dysregulated in many tumors with integrins playing key roles in signaling as well as promotion of tumor cell invasion and migration. Integrins also play a major role in adhesion of circulating tumor cells to new sites and the resulting formation of secondary tumors. Furthermore, integrins have demonstrated the ability to promoting stem cell-like properties in tumor cells as well as drug resistance. Anti-integrin therapies rely heavily on the doses or concentrations used as these determine whether the drugs act as antagonists or as integrin agonists. This expert review offers the latest synthesis in terms of the current knowledge of integrins functions within the TME and as potential molecular targets for cancer therapeutics innovation.
Collapse
Affiliation(s)
- Kevin Dzobo
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Cape Town Component, Cape Town, South Africa.,Division of Medical Biochemistry and Institute of Infectious Disease and Molecular Medicine, Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| |
Collapse
|
7
|
Tomas NM, Mortensen SA, Wilmanns M, Huber TB. Across scales: novel insights into kidney health and disease by structural biology. Kidney Int 2021; 100:281-288. [PMID: 33940110 DOI: 10.1016/j.kint.2021.03.042] [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: 02/02/2021] [Revised: 03/16/2021] [Accepted: 03/25/2021] [Indexed: 11/25/2022]
Abstract
Over the past decades, structural biology methods such as X-ray crystallography and cryo-electron microscopy have been increasingly used to study protein functions, molecular interactions, physiological processes, and disease mechanisms. This review outlines a selection of structural biology methods, highlights recent examples of how structural analyses have contributed to a more profound understanding of the machinery of life, and gives a perspective on how these methods can be applied to investigate functions of kidney molecules and pathogenic mechanisms of renal diseases.
Collapse
Affiliation(s)
- Nicola M Tomas
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Simon A Mortensen
- European Molecular Biology Laboratory, Hamburg Unit, Hamburg, Germany
| | - Matthias Wilmanns
- European Molecular Biology Laboratory, Hamburg Unit, Hamburg, Germany; University Hamburg Clinical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Tobias B Huber
- III. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
| |
Collapse
|
8
|
Ludwig BS, Kessler H, Kossatz S, Reuning U. RGD-Binding Integrins Revisited: How Recently Discovered Functions and Novel Synthetic Ligands (Re-)Shape an Ever-Evolving Field. Cancers (Basel) 2021; 13:1711. [PMID: 33916607 PMCID: PMC8038522 DOI: 10.3390/cancers13071711] [Citation(s) in RCA: 92] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 03/22/2021] [Accepted: 03/29/2021] [Indexed: 12/19/2022] Open
Abstract
Integrins have been extensively investigated as therapeutic targets over the last decades, which has been inspired by their multiple functions in cancer progression, metastasis, and angiogenesis as well as a continuously expanding number of other diseases, e.g., sepsis, fibrosis, and viral infections, possibly also Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV-2). Although integrin-targeted (cancer) therapy trials did not meet the high expectations yet, integrins are still valid and promising targets due to their elevated expression and surface accessibility on diseased cells. Thus, for the future successful clinical translation of integrin-targeted compounds, revisited and innovative treatment strategies have to be explored based on accumulated knowledge of integrin biology. For this, refined approaches are demanded aiming at alternative and improved preclinical models, optimized selectivity and pharmacological properties of integrin ligands, as well as more sophisticated treatment protocols considering dose fine-tuning of compounds. Moreover, integrin ligands exert high accuracy in disease monitoring as diagnostic molecular imaging tools, enabling patient selection for individualized integrin-targeted therapy. The present review comprehensively analyzes the state-of-the-art knowledge on the roles of RGD-binding integrin subtypes in cancer and non-cancerous diseases and outlines the latest achievements in the design and development of synthetic ligands and their application in biomedical, translational, and molecular imaging approaches. Indeed, substantial progress has already been made, including advanced ligand designs, numerous elaborated pre-clinical and first-in-human studies, while the discovery of novel applications for integrin ligands remains to be explored.
Collapse
Affiliation(s)
- Beatrice S. Ludwig
- Department of Nuclear Medicine, University Hospital Klinikum Rechts der Isar and Central Institute for Translational Cancer Research (TranslaTUM), Technical University Munich, 81675 Munich, Germany;
| | - Horst Kessler
- Department of Chemistry, Institute for Advanced Study, Technical University Munich, 85748 Garching, Germany;
| | - Susanne Kossatz
- Department of Nuclear Medicine, University Hospital Klinikum Rechts der Isar and Central Institute for Translational Cancer Research (TranslaTUM), Technical University Munich, 81675 Munich, Germany;
- Department of Chemistry, Institute for Advanced Study, Technical University Munich, 85748 Garching, Germany;
| | - Ute Reuning
- Clinical Research Unit, Department of Obstetrics and Gynecology, University Hospital Klinikum Rechts der Isar, Technical University Munich, 81675 Munich, Germany
| |
Collapse
|
9
|
Li J, Fukase Y, Shang Y, Zou W, Muñoz-Félix JM, Buitrago L, van Agthoven J, Zhang Y, Hara R, Tanaka Y, Okamoto R, Yasui T, Nakahata T, Imaeda T, Aso K, Zhou Y, Locuson C, Nesic D, Duggan M, Takagi J, Vaughan RD, Walz T, Hodivala-Dilke K, Teitelbaum SL, Arnaout MA, Filizola M, Foley MA, Coller BS. Novel Pure αVβ3 Integrin Antagonists That Do Not Induce Receptor Extension, Prime the Receptor, or Enhance Angiogenesis at Low Concentrations. ACS Pharmacol Transl Sci 2019; 2:387-401. [PMID: 32259072 PMCID: PMC7088984 DOI: 10.1021/acsptsci.9b00041] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Indexed: 01/12/2023]
Abstract
The integrin αVβ3 receptor has been implicated in several important diseases, but no antagonists are approved for human therapy. One possible limitation of current small-molecule antagonists is their ability to induce a major conformational change in the receptor that induces it to adopt a high-affinity ligand-binding state. In response, we used structural inferences from a pure peptide antagonist to design the small-molecule pure antagonists TDI-4161 and TDI-3761. Both compounds inhibit αVβ3-mediated cell adhesion to αVβ3 ligands, but do not induce the conformational change as judged by antibody binding, electron microscopy, X-ray crystallography, and receptor priming studies. Both compounds demonstrated the favorable property of inhibiting bone resorption in vitro, supporting potential value in treating osteoporosis. Neither, however, had the unfavorable property of the αVβ3 antagonist cilengitide of paradoxically enhancing aortic sprout angiogenesis at concentrations below its IC50, which correlates with cilengitide's enhancement of tumor growth in vivo.
Collapse
Affiliation(s)
- Jihong Li
- Allen and
Frances Adler Laboratory of Blood and Vascular Biology, Rockefeller University, 1230 York Avenue, New York, New York 10065, United States
| | - Yoshiyuki Fukase
- Tri-Institutional
Therapeutics Discovery Institute, 413 East 69 Street, New York, New York 10021, United
States
| | - Yi Shang
- Department
of Pharmacological Sciences, Icahn School
of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1677, New York, New York 10029-6574, United States
| | - Wei Zou
- Washington
University School of Medicine, Campus Box 8118, 660 South Euclid Avenue, St. Louis, Missouri 63110, United States
| | - José M. Muñoz-Félix
- Adhesion
and Angiogenesis Laboratory, Centre for Tumour Biology, Barts Cancer Institute—a CR-UK Centre of Excellence,
Queen Mary University of London, John Vane Science Centre, Charterhouse Square, London, EC1M 6BQ, United Kingdom
| | - Lorena Buitrago
- Allen and
Frances Adler Laboratory of Blood and Vascular Biology, Rockefeller University, 1230 York Avenue, New York, New York 10065, United States
| | - Johannes van Agthoven
- Leukocyte
Biology and Inflammation and Structural Biology Programs, Division
of Nephrology, Massachusetts General Hospital
and Harvard Medical School, 149 13th Street, Charlestown, Massachusetts 02129, United States
| | - Yixiao Zhang
- Laboratory
of Molecular Electron Microscopy, Rockefeller
University, 1230 York Avenue, New York, New York 10065, United
States
| | - Ryoma Hara
- Tri-Institutional
Therapeutics Discovery Institute, 413 East 69 Street, New York, New York 10021, United
States
| | - Yuta Tanaka
- Tri-Institutional
Therapeutics Discovery Institute, 413 East 69 Street, New York, New York 10021, United
States
| | - Rei Okamoto
- Tri-Institutional
Therapeutics Discovery Institute, 413 East 69 Street, New York, New York 10021, United
States
| | - Takeshi Yasui
- Tri-Institutional
Therapeutics Discovery Institute, 413 East 69 Street, New York, New York 10021, United
States
| | - Takashi Nakahata
- Tri-Institutional
Therapeutics Discovery Institute, 413 East 69 Street, New York, New York 10021, United
States
| | - Toshihiro Imaeda
- Tri-Institutional
Therapeutics Discovery Institute, 413 East 69 Street, New York, New York 10021, United
States
| | - Kazuyoshi Aso
- Tri-Institutional
Therapeutics Discovery Institute, 413 East 69 Street, New York, New York 10021, United
States
| | - Yuchen Zhou
- Department
of Pharmacological Sciences, Icahn School
of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1677, New York, New York 10029-6574, United States
| | - Charles Locuson
- Agios Pharmaceuticals, 88 Sidney Street, Cambridge, Massachusetts 02139-4169, United States
| | - Dragana Nesic
- Allen and
Frances Adler Laboratory of Blood and Vascular Biology, Rockefeller University, 1230 York Avenue, New York, New York 10065, United States
| | - Mark Duggan
- LifeSci
Consulting, LLC, 18243
SE Ridgeview Drive, Tequesta, Florida 33469, United
States
| | - Junichi Takagi
- Laboratory
of Protein Synthesis and Expression, Institute for Protein Research, Osaka University, 3-2 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Roger D. Vaughan
- Rockefeller
University Center for Clinical and Translational Science, Rockefeller University, 2130 York Avenue, New York, New York 10065, United States
| | - Thomas Walz
- Laboratory
of Molecular Electron Microscopy, Rockefeller
University, 1230 York Avenue, New York, New York 10065, United
States
| | - Kairbaan Hodivala-Dilke
- Adhesion
and Angiogenesis Laboratory, Centre for Tumour Biology, Barts Cancer Institute—a CR-UK Centre of Excellence,
Queen Mary University of London, John Vane Science Centre, Charterhouse Square, London, EC1M 6BQ, United Kingdom
| | - Steven L. Teitelbaum
- Washington
University School of Medicine, Campus Box 8118, 660 South Euclid Avenue, St. Louis, Missouri 63110, United States
| | - M. Amin Arnaout
- Leukocyte
Biology and Inflammation and Structural Biology Programs, Division
of Nephrology, Massachusetts General Hospital
and Harvard Medical School, 149 13th Street, Charlestown, Massachusetts 02129, United States
| | - Marta Filizola
- Department
of Pharmacological Sciences, Icahn School
of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1677, New York, New York 10029-6574, United States
| | - Michael A. Foley
- Tri-Institutional
Therapeutics Discovery Institute, 413 East 69 Street, New York, New York 10021, United
States
| | - Barry S. Coller
- Allen and
Frances Adler Laboratory of Blood and Vascular Biology, Rockefeller University, 1230 York Avenue, New York, New York 10065, United States
| |
Collapse
|
10
|
Are Integrins Still Practicable Targets for Anti-Cancer Therapy? Cancers (Basel) 2019; 11:cancers11070978. [PMID: 31336983 PMCID: PMC6678560 DOI: 10.3390/cancers11070978] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 06/27/2019] [Accepted: 07/09/2019] [Indexed: 01/01/2023] Open
Abstract
Correlative clinical evidence and experimental observations indicate that integrin adhesion receptors, in particular those of the αV family, are relevant to cancer cell features, including proliferation, survival, migration, invasion, and metastasis. In addition, integrins promote events in the tumor microenvironment that are critical for tumor progression and metastasis, including tumor angiogenesis, matrix remodeling, and the recruitment of immune and inflammatory cells. In spite of compelling preclinical results demonstrating that the inhibition of integrin αVβ3/αVβ5 and α5β1 has therapeutic potential, clinical trials with integrin inhibitors targeting those integrins have repeatedly failed to demonstrate therapeutic benefits in cancer patients. Here, we review emerging integrin functions and their proposed contribution to tumor progression, discuss preclinical evidence of therapeutic significance, revisit clinical trial results, and consider alternative approaches for their therapeutic targeting in oncology, including targeting integrins in the other cells of the tumor microenvironment, e.g., cancer-associated fibroblasts and immune/inflammatory cells. We conclude that integrins remain a valid target for cancer therapy; however, agents with better pharmacological properties, alternative models for their preclinical evaluation, and innovative combination strategies for clinical testing (e.g., together with immuno-oncology agents) are needed.
Collapse
|
11
|
Albertini B, Mathieu V, Iraci N, Van Woensel M, Schoubben A, Donnadio A, Greco SM, Ricci M, Temperini A, Blasi P, Wauthoz N. Tumor Targeting by Peptide-Decorated Gold Nanoparticles. Mol Pharm 2019; 16:2430-2444. [DOI: 10.1021/acs.molpharmaceut.9b00047] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Barbara Albertini
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo, 1, 06123 Perugia, Italy
| | | | - Nunzio Iraci
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano, Italy
| | - Matthias Van Woensel
- Research Group Experimental Neurosurgery and Neuroanatomy, Laboratory of Pediatric Immunology, KU Leuven, 3000 Leuven, Belgium
| | - Aurélie Schoubben
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo, 1, 06123 Perugia, Italy
| | - Anna Donnadio
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo, 1, 06123 Perugia, Italy
| | - Silvio M.L. Greco
- CNR-IOM—Istituto Officina dei Materiali, Strada Statale 14 km 163,5, 34149 Trieste, Italy
| | - Maurizio Ricci
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo, 1, 06123 Perugia, Italy
| | - Andrea Temperini
- Department of Pharmaceutical Sciences, University of Perugia, Via del Liceo, 1, 06123 Perugia, Italy
| | - Paolo Blasi
- School of Pharmacy, University of Camerino, via Gentile III da Varano, 62032 Camerino, Italy
| | | |
Collapse
|
12
|
Cohen K, Abadi U, Hercbergs A, Davis PJ, Ellis M, Ashur-Fabian O. The induction of myeloma cell death and DNA damage by tetrac, a thyroid hormone derivative. Endocr Relat Cancer 2018; 25:21-34. [PMID: 29018054 DOI: 10.1530/erc-17-0246] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 10/10/2017] [Indexed: 11/08/2022]
Abstract
Multiple myeloma (MM) is a plasma cell malignancy in which involvement of the thyroid hormone-integrin αvβ3 pathway was shown, and pharmacologic inhibition of this pathway is a rational approach to disease management. A thyroid hormone derivative, tetraiodothyroacetic acid (tetrac), which inhibits l-thyroxine (T4) and 3,5,3'-triiodo-l-thyronine (T3) binding to αvβ3 integrin, was studied in five MM cell lines and primary bone marrow (BM) MM cells. Tetrac inhibited MM cell proliferation (absolute cell number/viability) and induced caspase-dependent apoptosis (annexin-V/PI and cell cycle). Activation of caspase-9 and caspase-3 was further demonstrated. Moreover, DNA damage markers, ataxia-telangiectasia-mutated (ATM) kinase, poly ADP-ribose polymerase (PARP-1) and histone γH2AX were induced by tetrac. The various tetrac-initiated effects were attenuated by Arg-Gly-Asp (RGD) peptide, suggesting integrin involvement. Primary BM mononuclear cells were harvested from MM patients (n = 39) at various disease stages. Tetrac-induced apoptosis (12/17 samples) and sensitized the cytotoxic action of bortezomib (6/9 samples). Lastly, expression of plasma membrane integrin αvβ3 was shown not only in the malignant plasma clone, but also in other cell populations within the BM samples (n = 25). Tetrac is anti-proliferative and pro-apoptotic in MM and cells may offer a therapeutic approach for this disease.
Collapse
Affiliation(s)
- Keren Cohen
- Translational Hemato-Oncology LaboratoryThe Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel
- Department of Human Molecular Genetics and BiochemistryTel Aviv University, Tel Aviv, Israel
- Sackler Faculty of MedicineTel Aviv University, Tel Aviv, Israel
| | - Uri Abadi
- Translational Hemato-Oncology LaboratoryThe Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel
- Sackler Faculty of MedicineTel Aviv University, Tel Aviv, Israel
| | | | - Paul J Davis
- Department of MedicineAlbany Medical College, Albany, New York, USA
| | - Martin Ellis
- Translational Hemato-Oncology LaboratoryThe Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel
- Sackler Faculty of MedicineTel Aviv University, Tel Aviv, Israel
| | - Osnat Ashur-Fabian
- Translational Hemato-Oncology LaboratoryThe Hematology Institute and Blood Bank, Meir Medical Center, Kfar-Saba, Israel
- Department of Human Molecular Genetics and BiochemistryTel Aviv University, Tel Aviv, Israel
- Sackler Faculty of MedicineTel Aviv University, Tel Aviv, Israel
| |
Collapse
|
13
|
Tolomelli A, Galletti P, Baiula M, Giacomini D. Can Integrin Agonists Have Cards to Play against Cancer? A Literature Survey of Small Molecules Integrin Activators. Cancers (Basel) 2017; 9:cancers9070078. [PMID: 28678151 PMCID: PMC5532614 DOI: 10.3390/cancers9070078] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 06/30/2017] [Accepted: 07/03/2017] [Indexed: 12/14/2022] Open
Abstract
The ability of integrins to activate and integrate intracellular communication illustrates the potential of these receptors to serve as functional distribution hubs in a bi-directional signal transfer outside-in and inside-out of the cells. Tight regulation of the integrin signaling is paramount for normal physiological functions such as migration, proliferation, and differentiation, and misregulated integrin activity could be associated with several pathological conditions. Because of the important roles of integrins and their ligands in biological development, immune responses, leukocyte traffic, haemostasis, and cancer, their potential as therapeutic tools is now widely recognized. Nowadays extensive efforts have been made to discover and develop small molecule ligands as integrin antagonists, whereas less attention has been payed to agonists. In recent years, it has been recognized that integrin agonists could open up novel opportunities for therapeutics, which gain benefits to increase rather than decrease integrin-dependent adhesion and transductional events. For instance, a significant factor in chemo-resistance in melanoma is a loss of integrin-mediated adhesion; in this case, stimulation of integrin signaling by agonists significantly improved the response to chemotherapy. In this review, we overview results about small molecules which revealed an activating action on some integrins, especially those involved in cancer, and examine from a medicinal chemistry point of view, their structure and behavior.
Collapse
Affiliation(s)
- Alessandra Tolomelli
- Department of Chemistry "G. Ciamician", University of Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - Paola Galletti
- Department of Chemistry "G. Ciamician", University of Bologna, Via Selmi 2, 40126 Bologna, Italy.
| | - Monica Baiula
- Department of Pharmacy and Biotechnology, University of Bologna, Via Irnerio 48, 40126 Bologna, Italy.
| | - Daria Giacomini
- Department of Chemistry "G. Ciamician", University of Bologna, Via Selmi 2, 40126 Bologna, Italy.
| |
Collapse
|
14
|
Do MT, Chai TF, Casey PJ, Wang M. Isoprenylcysteine carboxylmethyltransferase function is essential for RAB4A-mediated integrin β3 recycling, cell migration and cancer metastasis. Oncogene 2017; 36:5757-5767. [PMID: 28604748 PMCID: PMC5658678 DOI: 10.1038/onc.2017.183] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 04/25/2017] [Accepted: 05/04/2017] [Indexed: 12/27/2022]
Abstract
Isoprenylcysteine carboxylmethyltransferase (ICMT) catalyzes the post-translational modification of RAB GTPases that contain C-terminal CXC motifs. However, the functional impact of this modification on RAB proteins has not been actively explored. We found that inhibition of ICMT significantly reduced cell migration in vitro and cancer invasion and metastasis in vivo. This role of ICMT was found to be mediated by RAB4A, an essential regulator of the fast recycling of integrin β3. Integrin β3 regulates cell polarity and migration when localized appropriately to the plasma membrane, thereby having an essential role in cancer metastasis. ICMT catalyzed carboxylmethylation is critical for RAB4A activation and interaction with effectors, its localization to endosomes and recycling vesicles, and hence important for RAB4A-dependent integrin β3 recycling to plasma membrane. These findings bring attention to the effects of C-terminal carboxylmethylation on RAB GTPases and provide a rationale for targeting ICMT in the treatment of metastatic cancer.
Collapse
Affiliation(s)
- M T Do
- Program in Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, Singapore
| | - T F Chai
- Program in Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, Singapore
| | - P J Casey
- Program in Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, Singapore.,Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, USA
| | - M Wang
- Program in Cancer and Stem Cell Biology, Duke-NUS Graduate Medical School, Singapore.,Department of Biochemistry, National University of Singapore, Singapore
| |
Collapse
|
15
|
Bernhagen D, De Laporte L, Timmerman P. High-Affinity RGD-Knottin Peptide as a New Tool for Rapid Evaluation of the Binding Strength of Unlabeled RGD-Peptides to α vβ 3, α vβ 5, and α 5β 1 Integrin Receptors. Anal Chem 2017; 89:5991-5997. [PMID: 28492301 DOI: 10.1021/acs.analchem.7b00554] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We describe a highly sensitive competition ELISA to measure integrin-binding of RGD-peptides in high-throughput without using cells, ECM-proteins, or antibodies. The assay measures (nonlabeled) RGD-peptides' ability to inhibit binding of a biotinylated "knottin"-RGD peptide to surface-immobilized integrins and, thus, enables quantification of the binding strength of high-, medium-, and low-affinity RGD-binders. We introduced the biotinylated knottin-RGD peptide instead of biotinylated cyclo[RGDfK] (as reported by Piras et al.), as integrin-binding was much stronger and clearly detectable for all three integrins. In order to maximize sensitivity and cost-efficiency, we first optimized several parameters, such as integrin-immobilization levels, knottin-RGD concentration, buffer compositions, type of detection tag (biotin, His- or cMyc-tag), and spacer length. We thereby identified two key factors, that is, (i) the critical spacer length (longer than Gly) and (ii) the presence of Ca2+ and Mg2+ in all incubation and washing buffers. Binding of knottin-RGD peptide was strongest for αvβ3 but also detectable for both αvβ5 and α5β1, while binding of biotinylated cyclo[RGDfK] was very weak and only detectable for αvβ3. For assay validation, we finally determined IC50 values for three unlabeled peptides, that is: (i) linear GRGDS, (ii) cyclo[RGDfK], and (iii) the knottin-RGD itself for binding to three different integrin receptors (αvβ3, αvβ5, α5β1). Major benefits of the novel assay are (i) the extremely low consumption of integrin (50 ng/peptide), (ii) the fact that neither antibodies/ECM-proteins nor integrin-expressing cells are required for detection, and (iii) its suitability for high-throughput screening of (RGD-)peptide libraries.
Collapse
Affiliation(s)
- Dominik Bernhagen
- Pepscan Therapeutics , Zuidersluisweg 2, 8243 RC, Lelystad, The Netherlands
| | - Laura De Laporte
- DWI - Leibniz Institute for Interactive Materials , Forckenbeckstr. 50, 52056 Aachen, Germany
| | - Peter Timmerman
- Pepscan Therapeutics , Zuidersluisweg 2, 8243 RC, Lelystad, The Netherlands.,Van't Hoff Institute for Molecular Sciences, University of Amsterdam , Sciencepark 904, 1098 XH, Amsterdam, The Netherlands
| |
Collapse
|
16
|
Kanazawa H, Imoto K, Okada M, Yamawaki H. Canstatin inhibits hypoxia-induced apoptosis through activation of integrin/focal adhesion kinase/Akt signaling pathway in H9c2 cardiomyoblasts. PLoS One 2017; 12:e0173051. [PMID: 28235037 PMCID: PMC5325616 DOI: 10.1371/journal.pone.0173051] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 02/14/2017] [Indexed: 12/19/2022] Open
Abstract
A hypoxic stress which causes apoptosis of cardiomyocytes is the main problem in the ischemic heart disease. Canstatin, a non-collagenous fragment of type IV collagen α2 chain, is an endogenous anti-angiogenic factor. We have previously reported that canstatin has a cytoprotective effect on cardiomyoblasts. In the present study, we examined the effects of canstatin on hypoxia-induced apoptosis in H9c2 cardiomyoblasts. Cell counting assay was performed to determine a cell viability. Western blotting was performed to detect expression of cleaved casepase-3 and phosphorylation of focal adhesion kinase (FAK) and Akt. Immunocytochemical staining was performed to observe a distribution of αv integrin. Hypoxia (1% O2, 48 h) significantly decreased cell viability and increased cleaved caspase-3 expression. Canstatin (10–250 ng/ml) significantly inhibited these changes in a concentration-dependent manner. Cilengitide (1 μM), an αvβ3 and αvβ5 integrin inhibitor, significantly prevented the protective effects of canstatin on cell viability. Canstatin significantly increased phosphorylation of FAK and Akt under hypoxic condition, which were inhibited by cilengitide. LY294002, an inhibitor of phosphatidylinositol-3 kinase/Akt pathway, suppressed the canstatin-induced Akt phosphorylation and reversed the protective effects of canstatin. It was observed that hypoxia caused a localization of αv integrin to focal adhesion. In summary, we for the first time clarified that canstatin inhibits hypoxia-induced apoptosis via FAK and Akt pathways through activating integrins in H9c2 cardiomyoblasts.
Collapse
Affiliation(s)
- Hiroki Kanazawa
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
| | - Keisuke Imoto
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
| | - Muneyoshi Okada
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
- * E-mail:
| | - Hideyuki Yamawaki
- Laboratory of Veterinary Pharmacology, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
| |
Collapse
|
17
|
Haywood NJ, Cordell PA, Tang KY, Makova N, Yuldasheva NY, Imrie H, Viswambharan H, Bruns AF, Cubbon RM, Kearney MT, Wheatcroft SB. Insulin-Like Growth Factor Binding Protein 1 Could Improve Glucose Regulation and Insulin Sensitivity Through Its RGD Domain. Diabetes 2017; 66:287-299. [PMID: 28108607 DOI: 10.2337/db16-0997] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2016] [Accepted: 10/26/2016] [Indexed: 11/13/2022]
Abstract
Low circulating levels of insulin-like growth factor binding protein 1 (IGFBP-1) are associated with insulin resistance and predict the development of type 2 diabetes. IGFBP-1 can affect cellular functions independently of IGF binding through an Arg-Gly-Asp (RGD) integrin-binding motif. Whether causal mechanisms underlie the favorable association of high IGFBP-1 levels with insulin sensitivity and whether these could be exploited therapeutically remain unexplored. We used recombinant IGFBP-1 and a synthetic RGD-containing hexapeptide in complementary in vitro signaling assays and in vivo metabolic profiling in obese mice to investigate the effects of IGFBP-1 and its RGD domain on insulin sensitivity, insulin secretion, and whole-body glucose regulation. The RGD integrin-binding domain of IGFBP-1, through integrin engagement, focal adhesion kinase, and integrin-linked kinase, enhanced insulin sensitivity and insulin secretion in C2C12 myotubes and INS-1 832/13 pancreatic β-cells. Both acute administration and chronic infusion of an RGD synthetic peptide to obese C57BL/6 mice improved glucose clearance and insulin sensitivity. These favorable effects on metabolic homeostasis suggest that the RGD integrin-binding domain of IGFBP-1 may be a promising candidate for therapeutic development in the field of insulin resistance.
Collapse
Affiliation(s)
- Natalie J Haywood
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, Leeds, West Yorkshire, U.K
| | - Paul A Cordell
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, Leeds, West Yorkshire, U.K
| | - Kar Yeun Tang
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, Leeds, West Yorkshire, U.K
| | - Natallia Makova
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, Leeds, West Yorkshire, U.K
| | - Nadira Y Yuldasheva
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, Leeds, West Yorkshire, U.K
| | - Helen Imrie
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, Leeds, West Yorkshire, U.K
| | - Hema Viswambharan
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, Leeds, West Yorkshire, U.K
| | - Alexander F Bruns
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, Leeds, West Yorkshire, U.K
| | - Richard M Cubbon
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, Leeds, West Yorkshire, U.K
| | - Mark T Kearney
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, Leeds, West Yorkshire, U.K
| | - Stephen B Wheatcroft
- Division of Cardiovascular and Diabetes Research, Leeds Multidisciplinary Cardiovascular Research Centre, Faculty of Medicine and Health, University of Leeds, Leeds, West Yorkshire, U.K.
| |
Collapse
|
18
|
Pijuan-Galitó S, Tamm C, Schuster J, Sobol M, Forsberg L, Merry CLR, Annerén C. Human serum-derived protein removes the need for coating in defined human pluripotent stem cell culture. Nat Commun 2016; 7:12170. [PMID: 27405751 PMCID: PMC4947164 DOI: 10.1038/ncomms12170] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Accepted: 06/03/2016] [Indexed: 01/30/2023] Open
Abstract
Reliable, scalable and time-efficient culture methods are required to fully realize the clinical and industrial applications of human pluripotent stem (hPS) cells. Here we present a completely defined, xeno-free medium that supports long-term propagation of hPS cells on uncoated tissue culture plastic. The medium consists of the Essential 8 (E8) formulation supplemented with inter-α-inhibitor (IαI), a human serum-derived protein, recently demonstrated to activate key pluripotency pathways in mouse PS cells. IαI efficiently induces attachment and long-term growth of both embryonic and induced hPS cell lines when added as a soluble protein to the medium at seeding. IαI supplementation efficiently supports adaptation of feeder-dependent hPS cells to xeno-free conditions, clonal growth as well as single-cell survival in the absence of Rho-associated kinase inhibitor (ROCKi). This time-efficient and simplified culture method paves the way for large-scale, high-throughput hPS cell culture, and will be valuable for both basic research and commercial applications. Improved culture methods are needed to reliably grow human pluripotent stem cells (hPSCs) on a large scale. Here, the authors identify a xeno-free medium with a supplement of Inter-α-inhibitor that supports long-term propagation and improved single-cell passaging of hPSCs on uncoated plastic.
Collapse
Affiliation(s)
- Sara Pijuan-Galitó
- Department of Medical Biochemistry and Microbiology, Box 582, Uppsala University, 751 23 Uppsala, Sweden
| | - Christoffer Tamm
- Department of Medical Biochemistry and Microbiology, Box 582, Uppsala University, 751 23 Uppsala, Sweden
| | - Jens Schuster
- Department of Immunology, Genetics and Pathology and Science for Life Laboratory, Box 815, Uppsala University, 751 08 Uppsala, Sweden
| | - Maria Sobol
- Department of Immunology, Genetics and Pathology and Science for Life Laboratory, Box 815, Uppsala University, 751 08 Uppsala, Sweden
| | - Lars Forsberg
- Department of Immunology, Genetics and Pathology and Science for Life Laboratory, Box 815, Uppsala University, 751 08 Uppsala, Sweden
| | - Catherine L R Merry
- Department of Medical Biochemistry and Microbiology, Box 582, Uppsala University, 751 23 Uppsala, Sweden.,Stem Cell Glycobiology Group, Wolfson Centre for Stem Cells, Tissue Engineering &Modelling Room A59, University of Nottingham, NG7 2RD Nottingham, UK
| | - Cecilia Annerén
- Department of Medical Biochemistry and Microbiology, Box 582, Uppsala University, 751 23 Uppsala, Sweden.,GE Healthcare Bio-Sciences AB, Björkgatan 30, 751 84 Uppsala, Sweden
| |
Collapse
|
19
|
Hennig R, Kuespert S, Haunberger A, Goepferich A, Fuchshofer R. Cyclic RGD peptides target human trabecular meshwork cells while ameliorating connective tissue growth factor-induced fibrosis. J Drug Target 2016; 24:952-959. [PMID: 26973018 DOI: 10.3109/1061186x.2016.1163709] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The major risk factor for primary open-angle glaucoma is increased intraocular pressure stemming from elevated outflow resistance in the trabecular meshwork (TM) region. Integrins play a pivotal role in the TM by influencing its biological properties and growth factor signaling. Pathologic changes in the TM are partially mediated by growth factors like connective tissue growth factor (CTGF). Specific targeting of TM cells could play a critical clinical role by increasing the therapeutic efficacy of nanoparticles, e.g. for nonviral gene delivery. Quantum dots with cyclo(RGDfC) covalently immobilized to their surface effectively targeted cultured TM cells and were rapidly and efficiently endocytosed by binding to αvβ3 and αvβ5 integrins. Compared to the integrin-overexpressing U87-MG cell line, the association of RGD-modified nanoparticles with the TM cells was significantly higher. Binding and uptake into TM cells was receptor-mediated and suppressible with free peptide. Soluble cyclic RGD peptides effectively attenuated CTGF-mediated effects and inhibited CTGF signaling. Due to their antagonism for αvβ3 and αvβ5 integrins, these cyclic RGD pentapeptides effectively ameliorated the CTGF-induced effects and strongly promoted specific nanoparticle association. Thus, cyclic RGD peptides are powerful multifunctional ligands for both addressing nanomaterials to the TM and interfering with pathologic CTGF signaling upon arrival.
Collapse
Affiliation(s)
- Robert Hennig
- a Department of Pharmaceutical Technology , University of Regensburg , Regensburg , Germany
| | - Sabrina Kuespert
- b Department for Human Anatomy and Embryology , University of Regensburg , Regensburg , Germany
| | - Alexandra Haunberger
- a Department of Pharmaceutical Technology , University of Regensburg , Regensburg , Germany
| | - Achim Goepferich
- a Department of Pharmaceutical Technology , University of Regensburg , Regensburg , Germany
| | - Rudolf Fuchshofer
- b Department for Human Anatomy and Embryology , University of Regensburg , Regensburg , Germany
| |
Collapse
|
20
|
Li Y, Partridge J, Berger C, Sepulveda-Rodriguez A, Vicini S, Conant K. Dopamine increases NMDA-stimulated calcium flux in striatopallidal neurons through a matrix metalloproteinase-dependent mechanism. Eur J Neurosci 2016; 43:194-203. [PMID: 26660285 PMCID: PMC6047748 DOI: 10.1111/ejn.13146] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 11/30/2015] [Accepted: 12/01/2015] [Indexed: 02/05/2023]
Abstract
Dopamine (DA) is a potent neuromodulator known to influence glutamatergic transmission in striatal medium spiny neurons (MSNs). It acts on D1- and D2-like DA receptors that are expressed on two distinct subpopulations. MSNs projecting to the substantia nigra express D1 receptors (D1Rs), while those projecting to the lateral globus pallidus express D2 receptors (D2Rs). D1R signalling in particular can increase excitatory transmission through varied protein kinase A-dependent, cell-autonomous pathways. Mechanisms by which D1R signalling could increase excitatory transmission in D2R-bearing MSNs have been relatively less explored. Herein, the possibility is considered that D1R agonists increase levels of soluble factors that subsequently influence N-methyl-D-aspartate (NMDA)-stimulated calcium flux in D2R neurons. This study focuses on matrix metalloproteinases (MMPs) and MMP-generated integrin binding ligands, important soluble effectors of glutamatergic transmission that may be elevated in the setting of excess DA. It was observed that DA and a D1R agonist, SKF81297, increase MMP activity in extracts from striatal slices, as determined by cleavage of the substrate β-dystroglycan. Using mice engineered to express the calcium indicator GCaMP3 in striatopallidal D2R-bearing neurons, it was also observed that SKF81297 pretreatment of slices (60 min) potentiates NMDA-stimulated calcium increases in this subpopulation. Effects are diminished by pretreatment with an antagonist of MMP activity or an inhibitor of integrin-dependent signalling. Together, results suggest that DA signalling can increase excitatory transmission in D2R neurons through an MMP-dependent mechanism. Future studies may be warranted to determine whether D1R-stimulated MMP-dependent processes contribute to behaviours in which increased activity in striatopallidal MSNs plays a role.
Collapse
Affiliation(s)
- Yan Li
- Departments of Neuroscience and Pharmacology, Georgetown University, 3970 Reservoir Road, Washington, DC, USA
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - John Partridge
- Departments of Neuroscience and Pharmacology, Georgetown University, 3970 Reservoir Road, Washington, DC, USA
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Carissa Berger
- Departments of Neuroscience and Pharmacology, Georgetown University, 3970 Reservoir Road, Washington, DC, USA
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Alberto Sepulveda-Rodriguez
- Departments of Neuroscience and Pharmacology, Georgetown University, 3970 Reservoir Road, Washington, DC, USA
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Stefano Vicini
- Departments of Neuroscience and Pharmacology, Georgetown University, 3970 Reservoir Road, Washington, DC, USA
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Katherine Conant
- Departments of Neuroscience and Pharmacology, Georgetown University, 3970 Reservoir Road, Washington, DC, USA
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, Chengdu, 610041, China
| |
Collapse
|
21
|
Takada Y, Fujita M. Secreted Phospholipase A2 Type IIA (sPLA2-IIA) Activates Integrins in an Allosteric Manner. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 925:103-115. [PMID: 27864802 DOI: 10.1007/5584_2016_95] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Secreted phospholipase A2 type IIA (sPLA2-IIA) is a well-established pro-inflammatory protein and has been a major target for drug discovery. However, the mechanism of its signaling action has not been fully understood. We previously found that sPLA2-IIA binds to integrins αvβ3 and α4β1 in human and that this interaction plays a role in sPLA2-IIA's signaling action. Our recent studies found that sPLA2-IIA activates integrins in an allosteric manner through direct binding to a newly identified binding site of integrins (site 2), which is distinct from the classical RGD-binding site (site 1). The sPLA2-IIA-induced integrin activation may be related to the signaling action of sPLA2-IIA. Since sPLA2-IIA is present in normal human tears in addition to rheumatoid synovial fluid at high concentrations the sPLA2-IIA-mediated integrin activation on leukocytes may be involved in immune responses in normal and pathological conditions.
Collapse
Affiliation(s)
- Yoshikazu Takada
- Department of Dermatology, Biochemistry and Molecular Medicine, UC Davis School of Medicine, Research III Suite 3300, 4645 Second Avenue, Sacramento, CA, 95817, USA. .,The PhD Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, 250 Wu-Hsing Street, Taipei, 11031, Taiwan, Republic of China.
| | - Masaaki Fujita
- Department of Clinical Immunology and Rheumatology, The Tazuke-Kofukai Medical Research Institute, Kitano Hospital, 2-4-20 Ohgimachi, Kita-ku, Osaka, 530-8480, Japan
| |
Collapse
|
22
|
Ames JJ, Contois L, Caron JM, Tweedie E, Yang X, Friesel R, Vary C, Brooks PC. Identification of an Endogenously Generated Cryptic Collagen Epitope (XL313) That May Selectively Regulate Angiogenesis by an Integrin Yes-associated Protein (YAP) Mechano-transduction Pathway. J Biol Chem 2015; 291:2731-50. [PMID: 26668310 DOI: 10.1074/jbc.m115.669614] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Indexed: 11/06/2022] Open
Abstract
Extracellular matrix (ECM) remodeling regulates angiogenesis. However, the precise mechanisms by which structural changes in ECM proteins contribute to angiogenesis are not fully understood. Integrins are molecules with the ability to detect compositional and structural changes within the ECM and integrate this information into a network of signaling circuits that coordinate context-dependent cell behavior. The role of integrin αvβ3 in angiogenesis is complex, as evidence exists for both positive and negative functions. The precise downstream signaling events initiated by αvβ3 may depend on the molecular characteristics of its ligands. Here, we identified an RGD-containing cryptic collagen epitope that is generated in vivo. Surprisingly, rather than inhibiting αvβ3 signaling, this collagen epitope promoted αvβ3 activation and stimulated angiogenesis and inflammation. An antibody directed to this RGDKGE epitope but not other RGD collagen epitopes inhibited angiogenesis and inflammation in vivo. The selective ability of this RGD epitope to promote angiogenesis and inflammation depends in part on its flanking KGE motif. Interestingly, a subset of macrophages may represent a physiologically relevant source of this collagen epitope. Here, we define an endothelial cell mechano-signaling pathway in which a cryptic collagen epitope activates αvβ3 leading to an Src and p38 MAPK-dependent cascade that leads to nuclear accumulation of Yes-associated protein (YAP) and stimulation of endothelial cell growth. Collectively, our findings not only provide evidence for a novel mechano-signaling pathway, but also define a possible therapeutic strategy to control αvβ3 signaling by targeting a pro-angiogenic and inflammatory ligand of αvβ3 rather than the receptor itself.
Collapse
Affiliation(s)
- Jacquelyn J Ames
- From the Maine Medical Center Research Institute, Center for Molecular Medicine, Scarborough, Maine 04074
| | - Liangru Contois
- From the Maine Medical Center Research Institute, Center for Molecular Medicine, Scarborough, Maine 04074
| | - Jennifer M Caron
- From the Maine Medical Center Research Institute, Center for Molecular Medicine, Scarborough, Maine 04074
| | - Eric Tweedie
- From the Maine Medical Center Research Institute, Center for Molecular Medicine, Scarborough, Maine 04074
| | - Xuehui Yang
- From the Maine Medical Center Research Institute, Center for Molecular Medicine, Scarborough, Maine 04074
| | - Robert Friesel
- From the Maine Medical Center Research Institute, Center for Molecular Medicine, Scarborough, Maine 04074
| | - Calvin Vary
- From the Maine Medical Center Research Institute, Center for Molecular Medicine, Scarborough, Maine 04074
| | - Peter C Brooks
- From the Maine Medical Center Research Institute, Center for Molecular Medicine, Scarborough, Maine 04074
| |
Collapse
|
23
|
Targeting Integrin-Dependent Adhesion and Signaling with 3-Arylquinoline and 3-Aryl-2-Quinolone Derivatives: A new Class of Integrin Antagonists. PLoS One 2015; 10:e0141205. [PMID: 26509443 PMCID: PMC4624933 DOI: 10.1371/journal.pone.0141205] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 09/24/2015] [Indexed: 12/26/2022] Open
Abstract
We previously reported the anti-migratory function of 3-aryl-2-quinolone derivatives, chemically close to flavonoids (Joseph et al., 2002). Herein we show that 3-arylquinoline or 3-aryl-2-quinolone derivatives disrupt cell adhesion in a dose dependent and reversible manner yet antagonized by artificial integrin activation such as manganese. Relying on this anti-adhesive activity, a Structure-Activity Relationship (SAR) study was established on 20 different compounds to throw the bases of future optimization strategies. Active drugs efficiently inhibit platelet spreading, aggregation, and clot retraction, processes that rely on αllbβ3 integrin activation and clustering. In vitro these derivatives interfere with β3 cytoplasmic tail interaction with kindlin-2 in pulldown assays albeit little effect was observed with pure proteins suggesting that the drugs may block an alternative integrin activation process that may not be directly related to kindlin recruitment. Ex vivo, these drugs blunt integrin signaling assayed using focal adhesion kinase auto-phosphorylation as a read-out. Hence, 3-arylquinoline and 3-aryl-2-quinolone series are a novel class of integrin activation and signaling antagonists.
Collapse
|
24
|
Liu X, Shi S, Feng Q, Bachhuka A, He W, Huang Q, Zhang R, Yang X, Vasilev K. Surface Chemical Gradient Affects the Differentiation of Human Adipose-Derived Stem Cells via ERK1/2 Signaling Pathway. ACS APPLIED MATERIALS & INTERFACES 2015; 7:18473-18482. [PMID: 26237746 DOI: 10.1021/acsami.5b04635] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To understand the role of surface chemistry on cell behavior and the associated molecular mechanisms, we developed and utilized a surface chemical gradient of amine functional groups by carefully adjusting the gas composition of 1,7-octadiene (OD) and allylamine (AA) of the plasma phase above a moving substrate. The chemical gradient surface used in the present work shows an increasing N/C ratio and wettability from the OD side toward the AA side with no change in surface topography. Under standard culture conditions (with serum), human adipose-derived stem cells (hASCs) adhesion and spreading area increased toward the AA side of the gradient. However, there were no differences in cell behavior in the absence of serum. These results, supported by the trends in proteins adsorption on the gradient surface, demonstrated that surface chemistry affects the response of hASCs through cell-adhesive serum proteins, rather than interacting directly with the cells. The expression of p-ERK and the osteogenic differentiation increased toward the AA side of the gradient, while adipogenic differentiation decreased in the same direction; however, when the activation of ERK1/2 was blocked by PD98059, the levels of osteogenic or adipogenic differentiation on different regions of the chemical gradient were the same. This indicates that ERK1/2 may be an important downstream signaling pathway of surface chemistry directed stem cell fate.
Collapse
Affiliation(s)
- Xujie Liu
- Graduate School at Shenzhen, Tsinghua University , Shenzhen 518055, China
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Shengjun Shi
- The Burns Department of Zhujiang Hospital, Southern Medical University , Guangzhou 510280, China
| | - Qingling Feng
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
- Key Laboratory of Advanced Materials of Ministry of Education of China, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Akash Bachhuka
- Mawson Institute, University of South Australia , Mawson Lakes 5095, Australia
| | - Wei He
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Qianli Huang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Ranran Zhang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Xing Yang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
| | - Krasimir Vasilev
- Mawson Institute, University of South Australia , Mawson Lakes 5095, Australia
- School of Advanced Manufacturing, University of South Australia , Mawson Lakes 5095, Australia
| |
Collapse
|
25
|
Purwada A, Jaiswal MK, Ahn H, Nojima T, Kitamura D, Gaharwar AK, Cerchietti L, Singh A. Ex vivo engineered immune organoids for controlled germinal center reactions. Biomaterials 2015; 63:24-34. [PMID: 26072995 DOI: 10.1016/j.biomaterials.2015.06.002] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Accepted: 06/01/2015] [Indexed: 01/15/2023]
Abstract
Ex vivo engineered three-dimensional organotypic cultures have enabled the real-time study and control of biological functioning of mammalian tissues. Organs of broad interest where its architectural, cellular, and molecular complexity has prevented progress in ex vivo engineering are the secondary immune organs. Ex vivo immune organs can enable mechanistic understanding of the immune system and more importantly, accelerate the translation of immunotherapies as well as a deeper understanding of the mechanisms that lead to their malignant transformation into a variety of B and T cell malignancies. However, till date, no modular ex vivo immune organ has been developed with an ability to control the rate of immune reaction through tunable design parameter. Here we describe a B cell follicle organoid made of nanocomposite biomaterials, which recapitulates the anatomical microenvironment of a lymphoid tissue that provides the basis to induce an accelerated germinal center (GC) reaction by continuously providing extracellular matrix (ECM) and cell-cell signals to naïve B cells. Compared to existing co-cultures, immune organoids provide a control over primary B cell proliferation with ∼100-fold higher and rapid differentiation to the GC phenotype with robust antibody class switching.
Collapse
Affiliation(s)
- Alberto Purwada
- Department of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA
| | - Manish K Jaiswal
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Haelee Ahn
- Division of Hematology and Medical Oncology, Weill Cornell Medical College of Cornell University, New York, NY 10065, USA
| | - Takuya Nojima
- Division of Molecular Biology, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Noda, Chiba 278-0022, Japan
| | - Daisuke Kitamura
- Division of Molecular Biology, Research Institute for Biomedical Sciences (RIBS), Tokyo University of Science, Noda, Chiba 278-0022, Japan
| | - Akhilesh K Gaharwar
- Department of Biomedical Engineering, Texas A&M University, College Station, TX 77843, USA; Department of Materials Science & Engineering, Texas A&M University, College Station, TX 77843, USA
| | - Leandro Cerchietti
- Division of Hematology and Medical Oncology, Weill Cornell Medical College of Cornell University, New York, NY 10065, USA
| | - Ankur Singh
- Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853, USA.
| |
Collapse
|
26
|
Meguenani M, Miljkovic-Licina M, Fagiani E, Ropraz P, Hammel P, Aurrand-Lions M, Adams RH, Christofori G, Imhof BA, Garrido-Urbani S. Junctional adhesion molecule B interferes with angiogenic VEGF/VEGFR2 signaling. FASEB J 2015; 29:3411-25. [PMID: 25911611 DOI: 10.1096/fj.15-270223] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 04/16/2015] [Indexed: 12/22/2022]
Abstract
De novo formation of blood vessels is a pivotal mechanism during cancer development. During the past few years, antiangiogenic drugs have been developed to target tumor vasculature. However, because of limitations and adverse effects observed with current therapies, there is a strong need for alternative antiangiogenic strategies. Using specific anti-junctional adhesion molecule (JAM)-B antibodies and Jam-b-deficient mice, we studied the role in antiangiogenesis of JAM-B. We found that antibodies against murine JAM-B, an endothelium-specific adhesion molecule, inhibited microvessel outgrowth from ex vivo aortic rings and in vitro endothelial network formation. In addition, anti-JAM-B antibodies blocked VEGF signaling, an essential pathway for angiogenesis. Moreover, increased aortic ring branching was observed in aortas isolated from Jam-b-deficient animals, suggesting that JAM-B negatively regulates proangiogenic pathways. In mice, JAM-B expression was detected in de novo-formed blood vessels of tumors, but anti-JAM-B antibodies unexpectedly did not reduce tumor growth. Accordingly, JAM-B deficiency in vivo had no impact on blood vessel formation, suggesting that targeting JAM-B in vivo may be offset by other proangiogenic mechanisms. In conclusion, despite the promising effects observed in vitro, targeting JAM-B during tumor progression seems to be inefficient as a stand-alone antiangiogenesis therapy.
Collapse
Affiliation(s)
- Mehdi Meguenani
- *Department of Pathology and Immunology, Medical Faculty, University Medical Center, University of Geneva, Geneva, Switzerland; Department of Biomedicine, Institute of Biochemistry and Genetics, University of Basel, Basel, Switzerland; Unité Mixte de Recherche 1068, Centre de Recherche en Cancérologie de Marseille, Institut National de la Santé et de la Recherche Médicale, Marseille, France; Institut Paoli-Calmettes, Marseille, France; Marseille Université, Marseille, France; Unité Mixte de Recherche 7258, Centre National de la Recherche Scientifique, Marseille, France; Department of Tissue Morphogenesis, Max-Planck-Institute for Molecular Biomedicine, Münster, Münster, Germany; and Faculty of Medicine, University of Münster, Münster, Germany
| | - Marijana Miljkovic-Licina
- *Department of Pathology and Immunology, Medical Faculty, University Medical Center, University of Geneva, Geneva, Switzerland; Department of Biomedicine, Institute of Biochemistry and Genetics, University of Basel, Basel, Switzerland; Unité Mixte de Recherche 1068, Centre de Recherche en Cancérologie de Marseille, Institut National de la Santé et de la Recherche Médicale, Marseille, France; Institut Paoli-Calmettes, Marseille, France; Marseille Université, Marseille, France; Unité Mixte de Recherche 7258, Centre National de la Recherche Scientifique, Marseille, France; Department of Tissue Morphogenesis, Max-Planck-Institute for Molecular Biomedicine, Münster, Münster, Germany; and Faculty of Medicine, University of Münster, Münster, Germany
| | - Ernesta Fagiani
- *Department of Pathology and Immunology, Medical Faculty, University Medical Center, University of Geneva, Geneva, Switzerland; Department of Biomedicine, Institute of Biochemistry and Genetics, University of Basel, Basel, Switzerland; Unité Mixte de Recherche 1068, Centre de Recherche en Cancérologie de Marseille, Institut National de la Santé et de la Recherche Médicale, Marseille, France; Institut Paoli-Calmettes, Marseille, France; Marseille Université, Marseille, France; Unité Mixte de Recherche 7258, Centre National de la Recherche Scientifique, Marseille, France; Department of Tissue Morphogenesis, Max-Planck-Institute for Molecular Biomedicine, Münster, Münster, Germany; and Faculty of Medicine, University of Münster, Münster, Germany
| | - Patricia Ropraz
- *Department of Pathology and Immunology, Medical Faculty, University Medical Center, University of Geneva, Geneva, Switzerland; Department of Biomedicine, Institute of Biochemistry and Genetics, University of Basel, Basel, Switzerland; Unité Mixte de Recherche 1068, Centre de Recherche en Cancérologie de Marseille, Institut National de la Santé et de la Recherche Médicale, Marseille, France; Institut Paoli-Calmettes, Marseille, France; Marseille Université, Marseille, France; Unité Mixte de Recherche 7258, Centre National de la Recherche Scientifique, Marseille, France; Department of Tissue Morphogenesis, Max-Planck-Institute for Molecular Biomedicine, Münster, Münster, Germany; and Faculty of Medicine, University of Münster, Münster, Germany
| | - Philippe Hammel
- *Department of Pathology and Immunology, Medical Faculty, University Medical Center, University of Geneva, Geneva, Switzerland; Department of Biomedicine, Institute of Biochemistry and Genetics, University of Basel, Basel, Switzerland; Unité Mixte de Recherche 1068, Centre de Recherche en Cancérologie de Marseille, Institut National de la Santé et de la Recherche Médicale, Marseille, France; Institut Paoli-Calmettes, Marseille, France; Marseille Université, Marseille, France; Unité Mixte de Recherche 7258, Centre National de la Recherche Scientifique, Marseille, France; Department of Tissue Morphogenesis, Max-Planck-Institute for Molecular Biomedicine, Münster, Münster, Germany; and Faculty of Medicine, University of Münster, Münster, Germany
| | - Michel Aurrand-Lions
- *Department of Pathology and Immunology, Medical Faculty, University Medical Center, University of Geneva, Geneva, Switzerland; Department of Biomedicine, Institute of Biochemistry and Genetics, University of Basel, Basel, Switzerland; Unité Mixte de Recherche 1068, Centre de Recherche en Cancérologie de Marseille, Institut National de la Santé et de la Recherche Médicale, Marseille, France; Institut Paoli-Calmettes, Marseille, France; Marseille Université, Marseille, France; Unité Mixte de Recherche 7258, Centre National de la Recherche Scientifique, Marseille, France; Department of Tissue Morphogenesis, Max-Planck-Institute for Molecular Biomedicine, Münster, Münster, Germany; and Faculty of Medicine, University of Münster, Münster, Germany
| | - Ralf H Adams
- *Department of Pathology and Immunology, Medical Faculty, University Medical Center, University of Geneva, Geneva, Switzerland; Department of Biomedicine, Institute of Biochemistry and Genetics, University of Basel, Basel, Switzerland; Unité Mixte de Recherche 1068, Centre de Recherche en Cancérologie de Marseille, Institut National de la Santé et de la Recherche Médicale, Marseille, France; Institut Paoli-Calmettes, Marseille, France; Marseille Université, Marseille, France; Unité Mixte de Recherche 7258, Centre National de la Recherche Scientifique, Marseille, France; Department of Tissue Morphogenesis, Max-Planck-Institute for Molecular Biomedicine, Münster, Münster, Germany; and Faculty of Medicine, University of Münster, Münster, Germany
| | - Gerhard Christofori
- *Department of Pathology and Immunology, Medical Faculty, University Medical Center, University of Geneva, Geneva, Switzerland; Department of Biomedicine, Institute of Biochemistry and Genetics, University of Basel, Basel, Switzerland; Unité Mixte de Recherche 1068, Centre de Recherche en Cancérologie de Marseille, Institut National de la Santé et de la Recherche Médicale, Marseille, France; Institut Paoli-Calmettes, Marseille, France; Marseille Université, Marseille, France; Unité Mixte de Recherche 7258, Centre National de la Recherche Scientifique, Marseille, France; Department of Tissue Morphogenesis, Max-Planck-Institute for Molecular Biomedicine, Münster, Münster, Germany; and Faculty of Medicine, University of Münster, Münster, Germany
| | - Beat A Imhof
- *Department of Pathology and Immunology, Medical Faculty, University Medical Center, University of Geneva, Geneva, Switzerland; Department of Biomedicine, Institute of Biochemistry and Genetics, University of Basel, Basel, Switzerland; Unité Mixte de Recherche 1068, Centre de Recherche en Cancérologie de Marseille, Institut National de la Santé et de la Recherche Médicale, Marseille, France; Institut Paoli-Calmettes, Marseille, France; Marseille Université, Marseille, France; Unité Mixte de Recherche 7258, Centre National de la Recherche Scientifique, Marseille, France; Department of Tissue Morphogenesis, Max-Planck-Institute for Molecular Biomedicine, Münster, Münster, Germany; and Faculty of Medicine, University of Münster, Münster, Germany
| | - Sarah Garrido-Urbani
- *Department of Pathology and Immunology, Medical Faculty, University Medical Center, University of Geneva, Geneva, Switzerland; Department of Biomedicine, Institute of Biochemistry and Genetics, University of Basel, Basel, Switzerland; Unité Mixte de Recherche 1068, Centre de Recherche en Cancérologie de Marseille, Institut National de la Santé et de la Recherche Médicale, Marseille, France; Institut Paoli-Calmettes, Marseille, France; Marseille Université, Marseille, France; Unité Mixte de Recherche 7258, Centre National de la Recherche Scientifique, Marseille, France; Department of Tissue Morphogenesis, Max-Planck-Institute for Molecular Biomedicine, Münster, Münster, Germany; and Faculty of Medicine, University of Münster, Münster, Germany
| |
Collapse
|
27
|
Fujita M, Zhu K, Fujita CK, Zhao M, Lam KS, Kurth MJ, Takada YK, Takada Y. Proinflammatory secreted phospholipase A2 type IIA (sPLA-IIA) induces integrin activation through direct binding to a newly identified binding site (site 2) in integrins αvβ3, α4β1, and α5β1. J Biol Chem 2015; 290:259-71. [PMID: 25398877 PMCID: PMC4281730 DOI: 10.1074/jbc.m114.579946] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2014] [Revised: 11/12/2014] [Indexed: 11/06/2022] Open
Abstract
Integrins are activated by signaling from inside the cell (inside-out signaling) through global conformational changes of integrins. We recently discovered that fractalkine activates integrins in the absence of CX3CR1 through the direct binding of fractalkine to a ligand-binding site in the integrin headpiece (site 2) that is distinct from the classical RGD-binding site (site 1). We propose that fractalkine binding to the newly identified site 2 induces activation of site 1 though conformational changes (in an allosteric mechanism). We reasoned that site 2-mediated activation of integrins is not limited to fractalkine. Human secreted phospholipase A2 type IIA (sPLA2-IIA), a proinflammatory protein, binds to integrins αvβ3 and α4β1 (site 1), and this interaction initiates a signaling pathway that leads to cell proliferation and inflammation. Human sPLA2-IIA does not bind to M-type receptor very well. Here we describe that sPLA2-IIA directly activated purified soluble integrin αvβ3 and transmembrane αvβ3 on the cell surface. This activation did not require catalytic activity or M-type receptor. Docking simulation predicted that sPLA2-IIA binds to site 2 in the closed-headpiece of αvβ3. A peptide from site 2 of integrin β1 specifically bound to sPLA2-IIA and suppressed sPLA2-IIA-induced integrin activation. This suggests that sPLA2-IIA activates αvβ3 through binding to site 2. sPLA2-IIA also activated integrins α4β1 and α5β1 in a site 2-mediated manner. We recently identified small compounds that bind to sPLA2-IIA and suppress integrin-sPLA2-IIA interaction (e.g. compound 21 (Cmpd21)). Cmpd21 effectively suppressed sPLA2-IIA-induced integrin activation. These results define a novel mechanism of proinflammatory action of sPLA2-IIA through integrin activation.
Collapse
Affiliation(s)
- Masaaki Fujita
- From the Departments of Dermatology and Biochemistry and Molecular Medicine, UC Davis School of Medicine, Sacramento, California 95817, Department of Clinical Immunology and Rheumatology, The Tazuke-Kofukai Medical Research Institute, Kitano Hospital, Osaka 530-8480, Japan
| | - Kan Zhu
- From the Departments of Dermatology and
| | - Chitose K Fujita
- Department of Clinical Immunology and Rheumatology, The Tazuke-Kofukai Medical Research Institute, Kitano Hospital, Osaka 530-8480, Japan
| | - Min Zhao
- From the Departments of Dermatology and
| | - Kit S Lam
- Biochemistry and Molecular Medicine, UC Davis School of Medicine, Sacramento, California 95817
| | - Mark J Kurth
- Department of Chemistry, UC Davis, Davis, California 95616, and
| | - Yoko K Takada
- From the Departments of Dermatology and Biochemistry and Molecular Medicine, UC Davis School of Medicine, Sacramento, California 95817
| | - Yoshikazu Takada
- From the Departments of Dermatology and Biochemistry and Molecular Medicine, UC Davis School of Medicine, Sacramento, California 95817,
| |
Collapse
|
28
|
Li YJ, Li XH, Wang LF, Kuang X, Hang ZX, Deng Y, Du JR. Therapeutic efficacy of a novel non-peptide αvβ3 integrin antagonist for pathological retinal angiogenesis in mice. Exp Eye Res 2014; 129:119-26. [PMID: 25446322 DOI: 10.1016/j.exer.2014.11.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Revised: 09/14/2014] [Accepted: 11/07/2014] [Indexed: 02/08/2023]
Abstract
αvβ3 integrin has been reported as a promising therapeutic target for angiogenesis. In the present study, we tested the antiangiogenic activity of 3-[3-(6-guanidino-1-oxoisoindolin-2-yl) propanamido]-3-(pyridin-3-yl) propanoic acid dihydrochloride (GOPPP), a novel non-peptide αvβ3 antagonist. Both human umbilical vein endothelial cells (HUVECs) and a mouse model of oxygen-induced retinopathy (OIR) were investigated separately. HUVEC adhesion, proliferation, migration, ERK1/2 and Akt phosphorylation were assessed. C57BL/6 mice were used for the studies in the OIR model. After exposure to 75% oxygen from postnatal day (PD) 7 to PD12, the mice were returned to room air, and GOPPP was intravitreally administered on PD12. Retinal neovascularization was evaluated on PD17. Hypoxia-inducible factor-1α (HIF-1α) and vascular endothelial growth factor (VEGF) protein levels and ERK1/2 phosphorylation were determined by Western blot analysis of retina proteins. GOPPP significantly inhibited the pro-angiogenic effects of vitronectin on HUVECs, including adhesion, proliferation, and migration, and inhibited ERK1/2 and Akt phosphorylation. Retinal neovascularization in the OIR model was significantly suppressed by intravitreal administration of 50 ng GOPPP. The pro-angiogenic factors HIF-1α and VEGF induced by hypoxia were significantly inhibited by GOPPP in OIR mice. GOPPP administration also inhibited ERK1/2 phosphorylation in the OIR model. These results indicate that GOPPP, a novel αvβ3 integrin antagonist, may have potential for the treatment of pathological retinal angiogenesis.
Collapse
Affiliation(s)
- Yong-Jie Li
- Department of Pharmacology, Key Laboratory of Drug Targeting and Drug Delivery Systems Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Xiao-Hong Li
- Department of Biopharmaceutics, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Liang-Fen Wang
- Department of Pharmacology, Key Laboratory of Drug Targeting and Drug Delivery Systems Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Xi Kuang
- Department of Pharmacology, Key Laboratory of Drug Targeting and Drug Delivery Systems Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Zhi-Xiong Hang
- Department of Medical Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, China
| | - Yong Deng
- Department of Medical Chemistry, West China School of Pharmacy, Sichuan University, Chengdu, China.
| | - Jun-Rong Du
- Department of Pharmacology, Key Laboratory of Drug Targeting and Drug Delivery Systems Ministry of Education, West China School of Pharmacy, Sichuan University, Chengdu, China.
| |
Collapse
|
29
|
Amschler K, Erpenbeck L, Kruss S, Schön MP. Nanoscale integrin ligand patterns determine melanoma cell behavior. ACS NANO 2014; 8:9113-25. [PMID: 25171587 DOI: 10.1021/nn502690b] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Cells use integrin receptors to adhere onto surfaces by binding to ligands such as the arginine-glycine-aspartic acid (RGD) motif. Cancer cells make use of this adhesion process, which has motivated the development of integrin-directed drugs. However, those drugs may exert paradoxical effects on tumor progression, which raises the question of how integrin function is governed in tumor cells on the nanoscale. We have utilized precisely defined and tunable RGD ligand site densities spanning 1 order of magnitude, i.e., 103 to 1145 ligand sites/μm(2), by using RGD-functionalized gold nanoparticle patterns immobilized on glass by block copolymer (micellar) nanolithography. In an αVβ3 integrin-dependent fashion, human melanoma cells spread, formed focal contacts, and reorganized cytoskeletal fibers on a physiologically relevant RGD density of 349 sites/μm(2). Intriguingly, low doses of solute RGD "shifted" the optimal densities of immobilized ligand along with corresponding melanoma cell integrin clusters and cytoskeletal changes toward those typical for "intermediate" ligand presentation. Consequently, melanoma cells were forced into a "permissive" state, optimizing interactions with suboptimal nanostructured biomimetic surfaces, thus providing an explanation for the seemingly paradoxical effects on tumor progression and a potential clue for individualized antitumoral therapies.
Collapse
Affiliation(s)
- Katharina Amschler
- Department of Dermatology, Venereology and Allergology, Georg August University , Göttingen, Germany
| | | | | | | |
Collapse
|
30
|
Liu X, Feng Q, Bachhuka A, Vasilev K. Surface modification by allylamine plasma polymerization promotes osteogenic differentiation of human adipose-derived stem cells. ACS APPLIED MATERIALS & INTERFACES 2014; 6:9733-9741. [PMID: 24893152 DOI: 10.1021/am502170s] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Tuning the material properties in order to control the cellular behavior is an important issue in tissue engineering. It is now well-established that the surface chemistry can affect cell adhesion, proliferation, and differentiation. In this study, plasma polymerization, which is an appealing method for surface modification, was employed to generate surfaces with different chemical compositions. Allylamine (AAm), acrylic acid (AAc), 1,7-octadiene (OD), and ethanol (ET) were used as precursors for plasma polymerization in order to generate thin films rich in amine (-NH2), carboxyl (-COOH), methyl (-CH3), and hydroxyl (-OH) functional groups, respectively. The surface chemistry was characterized by X-ray photoelectron spectroscopy (XPS), the wettability was determined by measuring the water contact angles (WCA) and the surface topography was imaged by atomic force microscopy (AFM). The effects of surface chemical compositions on the behavior of human adipose-derive stem cells (hASCs) were evaluated in vitro: Cell Count Kit-8 (CCK-8) analysis for cell proliferation, F-actin staining for cell morphology, alkaline phosphatase (ALP) activity analysis, and Alizarin Red S staining for osteogenic differentiation. The results show that AAm-based plasma-polymerized coatings can promote the attachment, spreading, and, in turn, proliferation of hASCs, as well as promote the osteogenic differentiation of hASCs, suggesting that plasma polymerization is an appealing method for the surface modification of scaffolds used in bone tissue engineering.
Collapse
Affiliation(s)
- Xujie Liu
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, China
| | | | | | | |
Collapse
|
31
|
Fujita M, Takada YK, Takada Y. The chemokine fractalkine can activate integrins without CX3CR1 through direct binding to a ligand-binding site distinct from the classical RGD-binding site. PLoS One 2014; 9:e96372. [PMID: 24789099 PMCID: PMC4008574 DOI: 10.1371/journal.pone.0096372] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Accepted: 04/07/2014] [Indexed: 11/19/2022] Open
Abstract
The chemokine domain of fractalkine (FKN-CD) binds to the classical RGD-binding site of αvβ3 and that the resulting ternary complex formation (integrin-FKN-CX3CR1) is critical for CX3CR1 signaling and FKN-induced integrin activation. However, only certain cell types express CX3CR1. Here we studied if FKN-CD can activate integrins in the absence of CX3CR1. We describe that WT FKN-CD activated recombinant soluble αvβ3 in cell-free conditions, but the integrin-binding defective mutant of FKN-CD (K36E/R37E) did not. This suggests that FKN-CD can activate αvβ3 in the absence of CX3CR1 through the direct binding of FKN-CD to αvβ3. WT FKN-CD activated αvβ3 on CX3CR1-negative cells (K562 and CHO) but K36E/R37E did not, suggesting that FKN-CD can activate integrin at the cellular levels in a manner similar to that in cell-free conditions. We hypothesized that FKN-CD enhances ligand binding to the classical RGD-binding site (site 1) through binding to a second binding site (site 2) that is distinct from site 1 in αvβ3. To identify the possible second FKN-CD binding site we performed docking simulation of αvβ3-FKN-CD interaction using αvβ3 with a closed inactive conformation as a target. The simulation predicted a potential FKN-CD-binding site in inactive αvβ3 (site 2), which is located at a crevice between αv and β3 on the opposite side of site 1 in the αvβ3 headpiece. We studied if FKN-CD really binds to site 2 using a peptide that is predicted to interact with FKN-CD in site 2. Notably the peptide specifically bound to FKN-CD and effectively suppressed integrin activation by FKN-CD. This suggests that FKN-CD actually binds to site 2, and this leads to integrin activation. We obtained very similar results in α4β1 and α5β1. The FKN binding to site 2 and resulting integrin activation may be a novel mechanism of integrin activation and of FKN signaling.
Collapse
Affiliation(s)
- Masaaki Fujita
- Department of Dermatology, Biochemistry and Molecular Medicine, UC Davis School of Medicine, Sacramento, California, United States of America
| | - Yoko K. Takada
- Department of Dermatology, Biochemistry and Molecular Medicine, UC Davis School of Medicine, Sacramento, California, United States of America
| | - Yoshikazu Takada
- Department of Dermatology, Biochemistry and Molecular Medicine, UC Davis School of Medicine, Sacramento, California, United States of America
- * E-mail:
| |
Collapse
|
32
|
Increased activation of latent TGF-β1 by αVβ3 in human Crohn's disease and fibrosis in TNBS colitis can be prevented by cilengitide. Inflamm Bowel Dis 2013; 19:2829-39. [PMID: 24051933 PMCID: PMC3889641 DOI: 10.1097/mib.0b013e3182a8452e] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Strictures develop in >30% of patients affected with Crohn's disease. No available medication prevents stricture development in susceptible patients. In Crohn's strictures, but not adjacent normal intestine, TGF-β1 increases in muscularis smooth muscle, increasing collagen I production and strictures. Muscle cells express αVβ3 integrin containing an Arg-Gly-Asp (RGD) binding domain. The aim was to determine whether increased TGF-β1 levels in strictures were the result of latent TGF-β1, which contains an RGD sequence, binding to and activation by αVβ3; and whether cilengitide, which is an RGD-containing αVβ3 integrin inhibitor, decreases TGF-β1 activation and development of fibrosis in chronic 2,4,6 trinitrobenzene sulfonic acid (TNBS)-induced colitis. DESIGN Muscle cells isolated from Crohn's disease strictures and normal resection margin and from the colon of rats after 42 days of chronic TNBS-induced colitis were used to prepare RNA and protein lysates and to initiate primary cultures. The mechanisms leading to increased TGF-β1 activation, collagen I production, and fibrosis were examined in human muscle and in rats. Human cultured cells in vitro and rats in vivo were treated with cilengitide to determines it efficacy to decrease TGF-β1-activation, collagen production, and decrease the development of fibrosis. RESULTS Latent TGF-β1 is activated by the αVβ3 RGD domain in human and rat intestinal smooth muscles. Increased activation of TGF-β1 in Crohn's disease and in TNBS-induced colitis causes increased collagen production, and fibrosis that could be inhibited by cilengitide. CONCLUSIONS Cilengitide, an αVβ3 integrin RGD inhibitor, could be a novel treatment to diminish excess TGF-β1 activation, collagen I production, and development of fibrosis in Crohn's disease.
Collapse
|
33
|
Gagen D, Faralli JA, Filla MS, Peters DM. The role of integrins in the trabecular meshwork. J Ocul Pharmacol Ther 2013; 30:110-20. [PMID: 24266581 DOI: 10.1089/jop.2013.0176] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Integrins are a family of heterodimeric transmembrane receptors that mediate adhesion to the extracellular matrix (ECM). However, integrins are not just adhesion receptors. They can act as "bidirectional signal transducers" that coordinate a large number of cellular activities in response to the extracellular environment and intracellular signaling events. Among the activities regulated by integrins are cell adhesion, assembly of the ECM, growth factor signaling, apoptosis, organization of the cytoskeleton, and cytoskeleton-mediated processes such as contraction, endocytosis, and phagocytosis. Integrins regulate these activities through a complex network of intracellular signaling kinases and adaptor proteins that associate with the transmembrane and cytoplasmic domains of the integrin subunits. In this review, we will discuss how some of the known integrin-mediated activities can control the function of the trabecular meshwork. We will also discuss how integrin activity is a tightly regulated process that involves conformation changes within the heterodimer which are mediated by specific integrin-binding proteins.
Collapse
Affiliation(s)
- Debjani Gagen
- 1 Department of Pathology and Laboratory Medicine, Medical Science Center, University of Wisconsin , Madison, Wisconsin
| | | | | | | |
Collapse
|
34
|
Zhang Z, Gu B, Zhu W, Zhu L. Integrin-mediated osteoblastic adhesion on a porous manganese-incorporated TiO 2 coating prepared by plasma electrolytic oxidation. Exp Ther Med 2013; 6:707-714. [PMID: 24137252 PMCID: PMC3786960 DOI: 10.3892/etm.2013.1204] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Accepted: 05/29/2013] [Indexed: 11/29/2022] Open
Abstract
This study was conducted to evaluate the bioactivity of manganese-incorporated TiO2 (Mn-TiO2) coating prepared on titanium (Ti) plate by plasma electrolytic oxidation (PEO) technique in Ca-, P- and Mn-containing electrolytes. The surface topography, phase and element compositions of the coatings were investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive spectrometry (EDS), respectively. The adhesion of osteoblast-like MG63 cells onto Ti, TiO2 and Mn-TiO2 surfaces was evaluated, and the signal transduction pathway involved was confirmed by the sequential expression of the genes for integrins β1, β3, α1 and α3, focal adhesion kinase (FAK), and the extracellular regulated kinases (ERKs), including ERK1 and ERK2. The results obtained indicated that Mn was successfully incorporated into the porous nanostructured TiO2 coating, and did not alter the surface topography or the phase composition of the coating. The adhesion of the MG63 cells onto the Mn-incorporated TiO2 coating was significantly enhanced compared with that on the Mn-free TiO2 coating and the pure Ti plates. In addition, the enhanced cell adhesion on the Mn-TiO2 coatings may have been mediated by the binding of the integrin subunits, β1 and α1, and the subsequent signal transduction pathway, involving FAK and ERK2. The study indicated that the novel Mn-TiO2 coating has potential for orthopedic implant applications, and that further investigations are required.
Collapse
Affiliation(s)
- Zhenxiang Zhang
- Orthopedic Department, The Affiliated Taizhou People's Hospital of Nantong University, Taizhou, Jiangsu 225300, P.R. China
| | | | | | | |
Collapse
|
35
|
Abstract
Metastasis is a combination of biological events that makes the difference between cancer and other diseases. Metastasis requires flow of erroneous but precisely coordinated basic cellular activities like cell migration-invasion, cell survival-apoptosis, cell proliferation, etc. All of these processes require efficient regulation of cell attachment and detachment, which recruit integrin receptors in this flow of events. World literatures show several aspects of interrelation of integrins and metastasis. Integrin molecules are being used as prime target to battle metastasis. In this review we are collating the observations showing importance of integrin biology in regulation of metastasis and the strategies where integrin receptors are being used as targets to regulate metastasis.
Collapse
Affiliation(s)
- Kirat Kumar Ganguly
- Department of Receptor Biology & Tumor Metastasis, Chittaranjan National Cancer Institute, Kolkata, India
| | | | | | | |
Collapse
|
36
|
Georgoulis A, Havaki S, Drosos Y, Goutas N, Vlachodimitropoulos D, Aleporou-Marinou V, Kittas C, Marinos E, Kouloukoussa M. RGD binding to integrin alphavbeta3 affects cell motility and adhesion in primary human breast cancer cultures. Ultrastruct Pathol 2012. [PMID: 23181508 DOI: 10.3109/01913123.2012.681834] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Integrins mediate cell adhesion to the extracellular matrix. Integrin alphavbeta3 recognizes the RGD motif as a ligand-binding site and has been associated with high malignant potential in breast cancer cells, signaling the onset of widespread metastasis. In recent years, several antagonists of integrin alphavbeta3, including RGD peptides, have been used as potential anti-cancer agents. In the present work, the effect of the linear RGD hexapeptide GRGDSP was studied, for the first time, on breast tumor explants, as well as on well-spread human breast cancer cells from primary cultures, using the explant technique, to clarify the role of this peptide in the suppression of breast cancer cell migration. The results showed that incubation of breast tumor explants with RGD peptide at the beginning of culture development inhibited completely the migration of cancer cells out of the tissue fragment as revealed by electron microscopy. RGD incubation of well-spread breast cancer cells from primary culture resulted in rounding and shrinkage of the cells accompanied by altered distribution of integrin alphavbeta3 and concomitant F-actin cytoskeletal disorganization, as revealed by immunofluorescence. Electron immunocytochemistry showed aggregation of integrin alphavbeta3 at the cell periphery and its detection in noncoated vesicles. However, Western immunoblotting showed no change in beta3 subunit expression, despite the altered distribution of the integrin alphavbeta3. In light of the above, it appears that the RGD peptide plays an important role in the modulation of cell motility and in the perturbation of cell attachment affecting the malignant potential of breast cancer cells in primary cultures.
Collapse
Affiliation(s)
- Anastasios Georgoulis
- Laboratory of Histology and Embryology, Medical School, University of Athens, Athens, Greece
| | | | | | | | | | | | | | | | | |
Collapse
|
37
|
Liu WM, Pang RTK, Cheong AWY, Ng EHY, Lao K, Lee KF, Yeung WSB. Involvement of microRNA lethal-7a in the regulation of embryo implantation in mice. PLoS One 2012; 7:e37039. [PMID: 22623977 PMCID: PMC3356405 DOI: 10.1371/journal.pone.0037039] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Accepted: 04/12/2012] [Indexed: 01/23/2023] Open
Abstract
MicroRNAs interact with multiple mRNAs resulting in their degradation and/or translational repression. This report used the delayed implantation model to determine the role of miRNAs in blastocysts. Dormant blastocysts in delayed implanting mice were activated by estradiol. Differential expression of 45 out of 238 miRNAs examined was found between the dormant and the activated blastocysts. Five of the nine members of the microRNA lethal-7 (let-7) family were down-regulated after activation. Human blastocysts also had a low expression of let-7 family. Forced-expression of a family member, let-7a in mouse blastocysts decreased the number of implantation sites (let-7a: 1.1±0.4; control: 3.8±0.4) in vivo, and reduced the percentages of blastocyst that attached (let-7a: 42.0±8.3%; control: 79.0±5.1%) and spreaded (let-7a: 33.5±2.9%; control: 67.3±3.8%) on fibronectin in vitro. Integrin-β3, a known implantation-related molecule, was demonstrated to be a target of let-7a by 3′-untranslated region reporter assay in cervical cancer cells HeLa, and Western blotting in mouse blastocysts. The inhibitory effect of forced-expression of let-7a on blastocyst attachment and outgrowth was partially nullified in vitro and in vivo by forced-expression of integrin-β3. This study provides the first direct evidence that let-7a is involved in regulating the implantation process partly via modulation of the expression of integrin-β3. (200 words).
Collapse
Affiliation(s)
- Wei-Min Liu
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam, Hong Kong, People’s Republic of China
| | - Ronald T. K. Pang
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam, Hong Kong, People’s Republic of China
- Centre for Reproduction, Development and Growth, The University of Hong Kong, Pokfulam, Hong Kong, People’s Republic of China
| | - Ana W. Y. Cheong
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam, Hong Kong, People’s Republic of China
| | - Ernest H. Y. Ng
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam, Hong Kong, People’s Republic of China
| | - Kaiqin Lao
- Applied Biosystems, Foster City, California, United States of America
| | - Kai-Fai Lee
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam, Hong Kong, People’s Republic of China
- Centre for Reproduction, Development and Growth, The University of Hong Kong, Pokfulam, Hong Kong, People’s Republic of China
| | - William S. B. Yeung
- Department of Obstetrics and Gynaecology, The University of Hong Kong, Pokfulam, Hong Kong, People’s Republic of China
- Centre for Reproduction, Development and Growth, The University of Hong Kong, Pokfulam, Hong Kong, People’s Republic of China
- * E-mail:
| |
Collapse
|
38
|
Mor-Cohen R, Rosenberg N, Einav Y, Zelzion E, Landau M, Mansour W, Averbukh Y, Seligsohn U. Unique disulfide bonds in epidermal growth factor (EGF) domains of β3 affect structure and function of αIIbβ3 and αvβ3 integrins in different manner. J Biol Chem 2012; 287:8879-91. [PMID: 22308022 DOI: 10.1074/jbc.m111.311043] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The β3 subunit of αIIbβ3 and αvβ3 integrins contains four epidermal growth factor (EGF)-like domains. Each domain harbors four disulfide bonds of which one is unique for integrins. We previously discerned a regulatory role of the EGF-4 Cys-560-Cys-583 unique bond for αIIbβ3 activation. In this study we further investigated the role of all four integrin unique bonds in both αIIbβ3 and αvβ3. We created β3 mutants harboring serine substitutions of each or both cysteines that disrupt the four unique bonds (Cys-437-Cys-457 in EGF-1, Cys-473-Cys-503 in EGF-2, Cys-523-Cys-544 in EGF-3, and Cys-560-Cys-583 in EGF-4) and transfected them into baby hamster kidney cells together with normal αv or αIIb. Flow cytometry was used to measure surface expression of αIIbβ3 and αvβ3 and their activity state by soluble fibrinogen binding. Most cysteine substitutions caused similarly reduced surface expression of both receptors. Disrupting all four unique disulfide bonds by single cysteine substitutions resulted in variable constitutive activation of αIIbβ3 and αvβ3. In contrast, whereas double C437S/C457S and C473S/C503S mutations yielded constitutively active αIIbβ3 and αvβ3, the C560S/C583S mutation did not, and the C523S/C544S mutation only yielded constitutively active αIIbβ3. Activation of C523S/C544S αvβ3 mutant by activating antibody and dithiothreitol was also impaired. Molecular dynamics of C523S/C544S β3 in αIIbβ3 but not in αvβ3 displayed an altered stable conformation. Our findings indicate that unique disulfide bonds in β3 differently affect the function of αIIbβ3 and αvβ3 and suggest a free sulfhydryl-dependent regulatory role for Cys-560-Cys-583 in both αIIbβ3 and αvβ3 and for Cys-523-Cys-544 only in αvβ3.
Collapse
Affiliation(s)
- Ronit Mor-Cohen
- the Amalia Biron Research Institute of Thrombosis and Hemostasis, Chaim Sheba Medical Center, Tel-Hashomer, Israel.
| | | | | | | | | | | | | | | |
Collapse
|
39
|
Joner M, Cheng Q, Schönhofer-Merl S, Lopez M, Neubauer S, Mas-Moruno C, Laufer B, Kolodgie FD, Kessler H, Virmani R. Polymer-free immobilization of a cyclic RGD peptide on a nitinol stent promotes integrin-dependent endothelial coverage of strut surfaces. J Biomed Mater Res B Appl Biomater 2012; 100:637-45. [DOI: 10.1002/jbm.b.31988] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 08/18/2011] [Accepted: 09/06/2011] [Indexed: 11/09/2022]
|
40
|
β3 integrin interacts directly with GluA2 AMPA receptor subunit and regulates AMPA receptor expression in hippocampal neurons. Proc Natl Acad Sci U S A 2012; 109:1323-8. [PMID: 22232691 DOI: 10.1073/pnas.1113736109] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The integrins are transmembrane receptors for ECM proteins, and they regulate various cellular functions in the central nervous system. In hippocampal neurons, the β3 integrin subtype is required for homeostatic synaptic scaling of AMPA receptors (AMPARs) induced by chronic activity deprivation. The surface level of β3 integrin in postsynaptic neurons directly correlates with synaptic strength and the abundance of synaptic GluA2 AMPAR subunit. Although these observations suggest a functional link between β3 integrin and AMPAR, little is known about the mechanistic basis for the connection. Here we investigate the nature of β3 integrin and AMPAR interaction underlying the β3 integrin-dependent control of synaptic AMPAR expression and thus synaptic strength. We show that β3 integrin and GluA2 subunit form a complex in mouse brain that involves the direct binding between their cytoplasmic domains. In contrast, β3 integrin associates with GluA1 AMPAR subunit only weakly, and, in a heterologous expression system, the interaction requires the coexpression of GluA2. Surprisingly, in hippocampal pyramidal neurons, expressing β3 integrin mutants with either increased or decreased affinity for extracellular ligands has no differential effects in elevating excitatory synaptic currents and surface GluA2 levels compared with WT β3 integrin. Our findings identify an integrin family member, β3, as a direct interactor of an AMPAR subunit and provide molecular insights into how this cell-adhesion protein regulates the composition of cell-surface AMPARs.
Collapse
|
41
|
Lechertier T, Hodivala-Dilke K. Focal adhesion kinase and tumour angiogenesis. J Pathol 2011; 226:404-12. [PMID: 21984450 DOI: 10.1002/path.3018] [Citation(s) in RCA: 123] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Revised: 09/24/2011] [Accepted: 09/27/2011] [Indexed: 12/14/2022]
Abstract
Angiogenesis, the formation of new blood vessels from pre-existing ones, is essential for tumour development. It is initiated and regulated by growth factors via their surface receptors, which activate several intracellular signalling pathways in endothelial cells. Cell adhesion molecules, such as integrins, also regulate angiogenesis. Despite these facts, inhibitors of endothelial cell growth factor receptors or integrins have not been as effective as initially hoped in the long-term inhibition of angiogenesis in cancer patients. Signalling downstream of growth factor receptors and integrins converge on the ubiquitously expressed non-receptor tyrosine kinase focal adhesion kinase (FAK). FAK is involved in endothelial cell proliferation, migration and survival, is up-regulated in many cancers and has recently been shown to control tumour angiogenesis. Indeed, FAK inhibitors are presently being developed for the treatment of cancer. However, recent studies have indicated the complexities of understanding the precise role for FAK in angiogenesis. Here we have summarized some of the key features of FAK, addressed some of the apparently contradictory roles of this molecule in angiogenesis and provided some perspectives for future studies.
Collapse
Affiliation(s)
- Tanguy Lechertier
- Adhesion and Angiogenesis Laboratory, Centre for Tumour Biology, Barts Cancer Institute, a CR-UK Centre of Excellence, Queen Mary University of London, UK
| | | |
Collapse
|
42
|
Reardon DA, Neyns B, Weller M, Tonn JC, Nabors LB, Stupp R. Cilengitide: an RGD pentapeptide ανβ3 and ανβ5 integrin inhibitor in development for glioblastoma and other malignancies. Future Oncol 2011; 7:339-54. [PMID: 21417900 DOI: 10.2217/fon.11.8] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Cilengitide, a cyclicized arginine-glycine-aspartic acid-containing pentapeptide, potently blocks ανβ3 and ανβ5 integrin activation. Integrins are upregulated in many malignancies and mediate a wide variety of tumor-stroma interactions. Cilengitide and other integrin-targeting therapeutics have preclinical activity against many cancer subtypes including glioblastoma (GBM), the most common and deadliest CNS tumor. Cilengitide is active against orthotopic GBM xenografts and can augment radiotherapy and chemotherapy in these models. In Phase I and II GBM trials, cilengitide and the combination of cilengitide with standard temozolomide and radiation demonstrate consistent antitumor activity and a favorable safety profile. Cilengitide is currently under evaluation in a pivotal, randomized Phase III study (Cilengitide in Combination With Temozolomide and Radiotherapy in Newly Diagnosed Glioblastoma Phase III Randomized Clinical Trial [CENTRIC]) for newly diagnosed GBM. In addition, randomized controlled Phase II studies with cilengitide are ongoing for non-small-cell lung cancer and squamous cell carcinoma of the head and neck. Cilengitide is the first integrin inhibitor in clinical Phase III development for oncology.
Collapse
Affiliation(s)
- David A Reardon
- Department of Surgery, Division of Neurosurgery, 047 Baker House, Duke University Medical Center, Box 3624, Durham, NC 27710, USA.
| | | | | | | | | | | |
Collapse
|
43
|
Nelson ES, Folkmann AW, Henry MD, DeMali KA. Vinculin activators target integrins from within the cell to increase melanoma sensitivity to chemotherapy. Mol Cancer Res 2011; 9:712-23. [PMID: 21460181 DOI: 10.1158/1541-7786.mcr-10-0599] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Metastatic melanoma is an aggressive skin disease for which there are no effective therapies. Emerging evidence indicates that melanomas can be sensitized to chemotherapy by increasing integrin function. Current integrin therapies work by targeting the extracellular domain, resulting in complete gains or losses of integrin function that lead to mechanism-based toxicities. An attractive alternative approach is to target proteins, such as vinculin, that associate with the integrin cytoplasmic domains and regulate its ligand-binding properties. Here, we report that a novel reagent, denoted vinculin-activating peptide or VAP, increases integrin activity from within the cell, as measured by elevated (i) numbers of active integrins, (ii) adhesion of cells to extracellular matrix ligands, (iii) numbers of cell-matrix adhesions, and (iv) downstream signaling. These effects are dependent on both integrins and a key regulatory residue A50 in the vinculin head domain. We further show that VAP dramatically increases the sensitivity of melanomas to chemotherapy in clonal growth assays and in vivo mouse models of melanoma. Finally, we show that the increase in chemosensitivity results from increases in DNA damage-induced apoptosis in a p53-dependent manner. Collectively, these findings show that integrin function can be manipulated from within the cell and validate integrins as a new therapeutic target for the treatment of chemoresistant melanomas.
Collapse
Affiliation(s)
- Elke S Nelson
- Department of Biochemistry, Roy J. and Lucille A. Carver College of Medicine, Iowa City, IA 52242, USA
| | | | | | | |
Collapse
|
44
|
Schneider JG, Amend SH, Weilbaecher KN. Integrins and bone metastasis: integrating tumor cell and stromal cell interactions. Bone 2011; 48:54-65. [PMID: 20850578 PMCID: PMC3010439 DOI: 10.1016/j.bone.2010.09.016] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2010] [Accepted: 09/04/2010] [Indexed: 01/24/2023]
Abstract
Integrins on both tumor cells and the supporting host stromal cells in bone (osteoclasts, new blood vessels, inflammatory cells, platelets and bone marrow stromal cells) play key roles in enhancing bone metastasis. Tumor cells localize to specific tissues through integrin-mediated contacts with extracellular matrix and stromal cells. Integrin expression and signaling are perturbed in cancer cells, allowing them to "escape" from cell-cell and cell-matrix tethers, invade, migrate and colonize within new tissues and matrices. Integrin signaling through αvβ3 and VLA-4 on tumor cells can promote tumor metastasis to and proliferation in the bone microenvironment. Osteoclast (OC) mediated bone resorption is a critical component of bone metastasis and can promote tumor growth in bone and αvβ3 integrins are critical to OC function and development. Tumors in the bone microenvironment can recruit new blood vessel formation, platelets, pro-tumor immune cells and bone marrow stromal cells that promote tumor growth and invasion in bone. Integrins and their ligands play critical roles in platelet aggregation (αvβ3 and αIIbβ3), hematopoietic cell mobilization (VLA-4 and osteopontin), neoangiogenesis (αvβ3, αvβ5, α6β4, and β1 integrin) and stromal function (osteopontin and VLA-4). Integrins are involved in the pathogenesis of bone metastasis at many levels and further study to define integrin dysregulation by cancer will yield new therapeutic targets for the prevention and treatment of bone metastasis.
Collapse
Affiliation(s)
- Jochen G. Schneider
- Institute for Clinical Biochemistry and Pathobiochemistry, University of Wuerzburg, Germany, and Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Luxembourg
| | - Sarah H. Amend
- Department of Medicine and Division of Oncology, Washington University, School of Medicine, St. Louis, MO, USA
| | - Katherine N. Weilbaecher
- Department of Medicine and Division of Oncology, Washington University, School of Medicine, St. Louis, MO, USA
- Corresponding author: Katherine Weilbaecher, Department of Medicine and Cell Biology and Physiology, Division of Oncology, Washington University, School of Medicine, 660 S. Euclid Ave, PO Box 8069, St. Louis, MO, 63110, USA
| |
Collapse
|
45
|
Jin ZH, Furukawa T, Waki A, Akaji K, Coll JL, Saga T, Fujibayashi Y. Effect of multimerization of a linear Arg-Gly-Asp peptide on integrin binding affinity and specificity. Biol Pharm Bull 2010; 33:370-8. [PMID: 20190395 DOI: 10.1248/bpb.33.370] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Multivalent interactions are frequently used to enhance ligand-receptor binding affinity. In this study, mono-, di- and trimeric Ala-Val-Thr-Gly-Arg-Gly-Asp-Ser-Tyr (AVTGRGDSY) peptides, labeled with (125)I or Cy5.5, were compared in vitro and in vivo. Using human embryonic kidney HEK293 (naturally alpha(V)-positive and beta(3)-negative), HEK293(beta(1)) (beta(1)-transfected and alpha(V)beta(3)-negative), HEK293(beta(3)) (beta(3)-transfected and strongly alpha(V)beta(3)-positive), and human glioblastoma U87MG (naturally alpha(V)beta(3)-positive) cell lines we evaluated their binding affinity and specificity. In vitro, the monomeric AVTGRGDSY showed specific binding to both HEK293(beta(1)) and HEK293(beta(3)) cells. Multimerization resulted in no change toward HEK293 cells, diminished binding with HEK293(beta(1)) cells, but substantially enhanced binding with alpha(V)beta(3)-positive HEK293(beta(3)) and U87MG cells. Moreover, multimeric AVTGRGDSY peptides were found to be nearly comparable to the same molar concentration of a well-known alpha(V)beta(3)-specific cyclo(RGDfV) (c(RGDfV)) peptide in specificity and affinity for targeting alpha(V)beta(3) integrin. Non-invasive in vivo optical imaging demonstrated that as compared to its monomeric analogue, the Cy5.5-labeled dimeric AVTGRGDSY peptide produced markedly enhanced tumor-to-background contrast in HEK293(beta(3)) tumor-bearing mice than in HEK293(beta(1)) tumor-bearing mice. In conclusion, the present study showed the difference of monomeric and multimeric linear Arg-Gly-Asp (RGD)-containing compound in integrin selectivity and affinity. Our data provide useful information for the design of novel RGD peptides.
Collapse
Affiliation(s)
- Zhao-Hui Jin
- Diagnostic Imaging Group, Molecular Imaging Center, National Institute of Radiological Sciences, Inage, Chiba 263-8555, Japan
| | | | | | | | | | | | | |
Collapse
|
46
|
Goh YY, Pal M, Chong HC, Zhu P, Tan MJ, Punugu L, Tan CK, Huang RL, Sze SK, Tang MBY, Ding JL, Kersten S, Tan NS. Angiopoietin-like 4 interacts with matrix proteins to modulate wound healing. J Biol Chem 2010; 285:32999-33009. [PMID: 20729546 DOI: 10.1074/jbc.m110.108175] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
A dynamic cell-matrix interaction is crucial for a rapid cellular response to changes in the environment. Appropriate cell behavior in response to the changing wound environment is required for efficient wound closure. However, the way in which wound keratinocytes modify the wound environment to coordinate with such cellular responses remains less studied. We demonstrated that angiopoietin-like 4 (ANGPTL4) produced by wound keratinocytes coordinates cell-matrix communication. ANGPTL4 interacts with vitronectin and fibronectin in the wound bed, delaying their proteolytic degradation by metalloproteinases. This interaction does not interfere with integrin-matrix protein recognition and directly affects cell-matrix communication by altering the availability of intact matrix proteins. These interactions stimulate integrin- focal adhesion kinase, 14-3-3, and PKC-mediated signaling pathways essential for effective wound healing. The deficiency of ANGPTL4 in mice delays wound re-epithelialization. Further analysis revealed that cell migration was impaired in the ANGPTL4-deficient keratinocytes. Altogether, the findings provide molecular insight into a novel control of wound healing via ANGPTL4-dependent regulation of cell-matrix communication. Given the known role of ANGPTL4 in glucose and lipid homeostasis, it is a prime therapeutic candidate for the treatment of diabetic wounds. It also underscores the importance of cell-matrix communication during angiogenesis and cancer metastasis.
Collapse
Affiliation(s)
- Yan Yih Goh
- From the School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | - Mintu Pal
- From the School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | - Han Chung Chong
- From the School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | - Pengcheng Zhu
- From the School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | - Ming Jie Tan
- From the School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | - Lakshmi Punugu
- From the School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | - Chek Kun Tan
- From the School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | - Royston-Luke Huang
- From the School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | - Siu Kwan Sze
- From the School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551
| | | | - Jeak Ling Ding
- Department of Biological Sciences, National University of Singapore, 14 Science Drive, Singapore 117543
| | - Sander Kersten
- Wageningen University, 6700 EV Wageningen, The Netherlands
| | - Nguan Soon Tan
- From the School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore 637551.
| |
Collapse
|
47
|
Choi WS, Jeon OH, Kim DS. CD40 ligand shedding is regulated by interaction between matrix metalloproteinase-2 and platelet integrin alpha(IIb)beta(3). J Thromb Haemost 2010; 8:1364-71. [PMID: 20230421 DOI: 10.1111/j.1538-7836.2010.03837.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND CD40 ligand (CD40L, CD154) in the circulatory system is mainly contained in platelets, and surface-expressed CD40L on activated platelets is subsequently cleaved by proteolytic activity to generate soluble CD40L (sCD40L). However, the enzyme responsible for the shedding of CD40L in activated platelets has not been clearly identified yet. We have recently found that molecular interaction of matrix metalloproteinase-2 (MMP-2) with integrin alpha(IIb)beta(3) is required for the enhancement of platelet activation. OBJECTIVES To elucidate the biochemical mechanism of MMP-2-associated sCD40L release. METHODS Localization of MMP-2 and CD40L in platelets was analyzed by flow cytometry and fluorescence microscopy. The release of sCD40L from activated platelets was measured by enzyme-linked immunosorbent assay. MMP-2 binding to alpha(IIb)beta(3) was analyzed by immunoprecipitation and western blotting. Recombinant hemopexin-like domain and MMP-2-specific inhibitor were used to characterize the nature of MMP-2 binding and catalytic activity. RESULTS It was revealed that interaction of MMP-2 with alpha(IIb)beta(3) is required for effective production of sCD40L in activated human platelets. Platelet activation and release of sCD40L were significantly affected by inhibition of platelet-derived MMP-2 activity or by inhibition of binding between the enzyme and the integrin. It was also found in platelet-rich plasma that MMP-2 activity is responsible for generating sCD40L. CONCLUSIONS The results presented here strongly suggest that MMP-2 interacts with alpha(IIb)beta(3) to regulate the shedding of CD40L exposed on the surfaces of activated human platelets.
Collapse
Affiliation(s)
- W-S Choi
- National Research Laboratory, Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, Republic of Korea
| | | | | |
Collapse
|
48
|
Reynolds AR. Potential relevance of bell-shaped and u-shaped dose-responses for the therapeutic targeting of angiogenesis in cancer. Dose Response 2010; 8:253-84. [PMID: 20877487 DOI: 10.2203/dose-response.09-049.reynolds] [Citation(s) in RCA: 80] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Tumor angiogenesis, the growth of new blood vessels into tumors, facilitates tumor growth and thus represents an attractive therapeutic target. Numerous experimental angiogenesis inhibitors have been characterised and subsequently trialled in patients. Some of these agents have failed to show any substantial activity in patients. In contrast, others have been more successful, but even these provide only a few months extra patient survival. Recent work has focused on understanding the effects of anti-angiogenic agents on tumor biology and has revealed a number of new findings that may help to explain the limited efficacy of angiogenesis inhibitors. Herein, I review the evidence that hormetic dose-responses (i.e. bell-shaped and U-shaped dose-response curves) are often observed with anti-angiogenic agents. Agents reported to exhibit these types of dose-response include: 5-fluorouracil, ATN-161, bortezomib, cisplatin, endostatin, enterostatin, integrin inhibitors, interferon-α, plasminogen activator-1 (PAI-1), rapamycin, rosiglitazone, statins, thrombospondin-1, TGF-α1 and TGF-α3. Hormesis may also be relevant for drugs that target the vascular endothelial growth factor (VEGF) signalling pathway and for metronomic chemotherapy. Here I argue that hormetic dose-responses present a challenge for the clinical translation of several anti-angiogenic agents and discuss how these problems might be circumvented.
Collapse
Affiliation(s)
- Andrew R Reynolds
- Tumor Angiogenesis Group, The Breakthrough Breast Cancer Research Centre, The Institute of Cancer Research, London, U.K
| |
Collapse
|
49
|
Abstract
The integrin family of cell adhesion receptors regulates a diverse array of cellular functions crucial to the initiation, progression and metastasis of solid tumours. The importance of integrins in several cell types that affect tumour progression has made them an appealing target for cancer therapy. Integrin antagonists, including the alphavbeta3 and alphavbeta5 inhibitor cilengitide, have shown encouraging activity in Phase II clinical trials and cilengitide is currently being tested in a Phase III trial in patients with glioblastoma. These exciting clinical developments emphasize the need to identify how integrin antagonists influence the tumour and its microenvironment.
Collapse
Affiliation(s)
- Jay S Desgrosellier
- Department of Pathology, Moores University of California at San Diego Cancer Center, La Jolla, 92093-0803, United States
| | | |
Collapse
|
50
|
Saltel F, Mortier E, Hytönen VP, Jacquier MC, Zimmermann P, Vogel V, Liu W, Wehrle-Haller B. New PI(4,5)P2- and membrane proximal integrin-binding motifs in the talin head control beta3-integrin clustering. ACTA ACUST UNITED AC 2009; 187:715-31. [PMID: 19948488 PMCID: PMC2806581 DOI: 10.1083/jcb.200908134] [Citation(s) in RCA: 137] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A talin intermolecular interaction autoinhibits its own activation and regulates β3-integrin binding. When bound, β3-integrin undergoes structural alterations that prevent its β and α subunits from associating, maintaining β3-integrin's clustering capability. Integrin-dependent adhesion sites consist of clustered integrins that transmit mechanical forces and provide signaling required for cell survival and morphogenesis. Despite their importance, the regulation of integrin clustering by the cytoplasmic adapter protein talin (Tal) and phosphatidylinositol (PI)-4,5-biphosphate (PI(4,5)P2) lipids nor their dynamic coupling to the actin cytoskeleton is fully understood. By using a Tal-dependent integrin clustering assay in intact cells, we identified a PI(4,5)P2-binding basic ridge spanning across the F2 and F3 domains of the Tal head that regulates integrin clustering. Clustering requires a new PI(4,5)P2-binding site in F2 and is negatively regulated by autoinhibitory interactions between F3 and the Tal rod (Tal-R). The release of the Tal-R exposes a new β3-integrin–binding site in F3, enabling interaction with a membrane proximal acidic motif, which involves the formation of salt bridges between K316 and K324 with E726 and D723, respectively. This interaction shields the β-integrin tail from reassociation with its α subunit, thereby maintaining the integrin in a substrate-binding and clustering-competent form.
Collapse
Affiliation(s)
- Frédéric Saltel
- Department of Cellular Physiology and Metabolism, University Medical Center, University of Geneva, 1211 Geneva 4, Switzerland
| | | | | | | | | | | | | | | |
Collapse
|