1
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Cherf GM, Lee RB, Mehta N, Clifford C, Torres K, Kintzing JR, Cochran JR. An engineered ultrahigh affinity bi-paratopic uPAR targeting agent confers enhanced tumor targeting. Biotechnol Bioeng 2024. [PMID: 38965775 DOI: 10.1002/bit.28790] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 06/08/2024] [Accepted: 06/16/2024] [Indexed: 07/06/2024]
Abstract
Urokinase-type plasminogen activator receptor (uPAR) is overexpressed on tumor cells in multiple types of cancer and contributes to disease progression and metastasis. In this work, we engineered a novel bi-paratopic uPAR targeting agent by fusing the binding domains of two native uPAR ligands: uPA and vitronectin, with a flexible peptide linker. The linker length was optimized to facilitate simultaneous engagement of both domains to their adjacent epitopes on uPAR, resulting in a high affinity and avid binding interaction. Furthermore, the individual domains were affinity-matured using yeast surface display and directed evolution, resulting in a bi-paratopic protein with affinity in the picomolar to femtomolar range. This engineered uPAR targeting agent demonstrated significantly enhanced tumor localization in mouse tumor models compared to the native uPAR ligand and warrants further investigation as a diagnostic and therapeutic agent for cancer.
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Affiliation(s)
- Gerald M Cherf
- Department of Bioengineering, Stanford University, Stanford, California, USA
| | - Robert B Lee
- Department of Bioengineering, Stanford University, Stanford, California, USA
- Department of Chemical Engineering, Stanford University, Stanford, California, USA
| | - Nishant Mehta
- Department of Bioengineering, Stanford University, Stanford, California, USA
| | - Claire Clifford
- Department of Bioengineering, Stanford University, Stanford, California, USA
| | - Kathleen Torres
- Department of Bioengineering, Stanford University, Stanford, California, USA
| | - James R Kintzing
- Department of Bioengineering, Stanford University, Stanford, California, USA
| | - Jennifer R Cochran
- Department of Bioengineering, Stanford University, Stanford, California, USA
- Department of Chemical Engineering, Stanford University, Stanford, California, USA
- Stanford Cancer Institute, Stanford University, Stanford, California, USA
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2
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Huo Z, Yang W, Harati J, Nene A, Borghi F, Piazzoni C, Milani P, Guo S, Galluzzi M, Boraschi D. Biomechanics of Macrophages on Disordered Surface Nanotopography. ACS APPLIED MATERIALS & INTERFACES 2024; 16:27164-27176. [PMID: 38750662 DOI: 10.1021/acsami.4c04330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
Macrophages are involved in every stage of the innate/inflammatory immune responses in the body tissues, including the resolution of the reaction, and they do so in close collaboration with the extracellular matrix (ECM). Simplified substrates with nanotopographical features attempt to mimic the structural properties of the ECM to clarify the functional features of the interaction of the ECM with macrophages. We still have a limited understanding of the macrophage behavior upon interaction with disordered nanotopography, especially with features smaller than 10 nm. Here, we combine atomic force microscopy (AFM), finite element modeling (FEM), and quantitative biochemical approaches in order to understand the mechanotransduction from the nanostructured surface into cellular responses. AFM experiments show a decrease of macrophage stiffness, measured with the Young's modulus, as a biomechanical response to a nanostructured (ns-) ZrOx surface. FEM experiments suggest that ZrOx surfaces with increasing roughness represent weaker mechanical boundary conditions. The mechanical cues from the substrate are transduced into the cell through the formation of integrin-regulated focal adhesions and cytoskeletal reorganization, which, in turn, modulate cell biomechanics by downregulating cell stiffness. Surface nanotopography and consequent biomechanical response impact the overall behavior of macrophages by increasing movement and phagocytic ability without significantly influencing their inflammatory behavior. Our study suggests a strong potential of surface nanotopography for the regulation of macrophage functions, which implies a prospective application relative to coating technology for biomedical devices.
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Affiliation(s)
- Zixin Huo
- Shenzhen Key Laboratory of Smart Sensing and Intelligent Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenjie Yang
- Laboratory of Inflammation and Vaccines, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Javad Harati
- Shenzhen Key Laboratory of Biomimetic Materials and Cellular Immunomodulation, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Ajinkya Nene
- Laboratory of Inflammation and Vaccines, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Francesca Borghi
- CIMaINa and Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano, Via Celoria 16, 20133 Milan, Italy
| | - Claudio Piazzoni
- CIMaINa and Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano, Via Celoria 16, 20133 Milan, Italy
| | - Paolo Milani
- CIMaINa and Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano, Via Celoria 16, 20133 Milan, Italy
| | - Shifeng Guo
- Shenzhen Key Laboratory of Smart Sensing and Intelligent Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Guangdong Provincial Key Lab of Robotics and Intelligent System, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- The Key Laboratory of Biomedical Imaging Science and System, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Massimiliano Galluzzi
- Laboratory of Inflammation and Vaccines, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Diana Boraschi
- Laboratory of Inflammation and Vaccines, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- Department of Pharmacology, Shenzhen University of Advanced Technology, Shenzhen 518055, China
- China-Italy Joint Laboratory of Pharmacobiotechnology for Medical Immunomodulation, Shenzhen 518055, China
- Institute of Biomolecular Chemistry, National Research Council, 80078 Pozzuoli, Italy
- Stazione Zoologica Anton Dohrn, 80122 Napoli, Italy
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3
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Miskin RP, DiPersio CM. Roles for epithelial integrin α3β1 in regulation of the microenvironment during normal and pathological tissue remodeling. Am J Physiol Cell Physiol 2024; 326:C1308-C1319. [PMID: 38497112 DOI: 10.1152/ajpcell.00128.2024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 03/08/2024] [Accepted: 03/08/2024] [Indexed: 03/19/2024]
Abstract
Integrin receptors for the extracellular matrix activate intracellular signaling pathways that are critical for tissue development, homeostasis, and regeneration/repair, and their loss or dysregulation contributes to many developmental defects and tissue pathologies. This review will focus on tissue remodeling roles for integrin α3β1, a receptor for laminins found in the basement membranes (BMs) that underlie epithelial cell layers. As a paradigm, we will discuss literature that supports a role for α3β1 in promoting ability of epidermal keratinocytes to modify their tissue microenvironment during skin development, wound healing, or tumorigenesis. Preclinical and clinical studies have shown that this role depends largely on ability of α3β1 to govern the keratinocyte's repertoire of secreted proteins, or the "secretome," including 1) matrix proteins and proteases involved in matrix remodeling and 2) paracrine-acting growth factors/cytokines that stimulate other cells with important tissue remodeling functions (e.g., endothelial cells, fibroblasts, inflammatory cells). Moreover, α3β1 signaling controls gene expression that helps epithelial cells carry out these functions, including genes that encode secreted matrix proteins, proteases, growth factors, or cytokines. We will review what is known about α3β1-dependent gene regulation through both transcription and posttranscriptional mRNA stability. Regarding the latter, we will discuss examples of α3β1-dependent alternative splicing (AS) or alternative polyadenylation (APA) that prevents inclusion of cis-acting mRNA sequences that would otherwise target the transcript for degradation via nonsense-mediated decay or destabilizing AU-rich elements (AREs) in the 3'-untranslated region (3'-UTR). Finally, we will discuss prospects and anticipated challenges of exploiting α3β1 as a clinical target for the treatment of cancer or wound healing.
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Affiliation(s)
| | - C Michael DiPersio
- Department of Surgery, Albany Medical College, Albany, New York, United States
- Department of Molecular and Cellular Physiology, Albany Medical College, Albany, New York, United States
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4
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Montecillo J, Pirker T, Pemberton C, Chew-Harris J. suPAR in cardiovascular disease. Adv Clin Chem 2024; 121:89-131. [PMID: 38797545 DOI: 10.1016/bs.acc.2024.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
Soluble urokinase plasminogen activator receptor (suPAR), the soluble counterpart of urokinase plasminogen activator receptor, is found in the circulation at various levels. suPAR and its parent molecule, cell surface uPAR, exhibit similar structure and extracellular functional roles facilitating fibrinolysis, cellular adhesion, and migration. Studies have assessed the correlation between suPAR in cardiovascular disease (CVD). It is postulated that suPAR may serve as an indicator of inflammatory activation and burden during CVD progression. Increased suPAR independently predicts poorer outcomes in acute coronary syndromes, in heart failure, as well as in coronary artery disease and atherosclerosis. To guide translation into clinical utization, suPAR has been assessed in numerous CVD settings for improved risk discrimination independently or in association with established traditional risk factors. Whilst the involvement of suPAR has been explored in other diseases such as kidney diseases and cancer, there is only emerging evidence of suPAR's mechanistic involvement in cardiovascular disease. In this review, we provide a background into suPAR and its potential role as a biomarker in CVD.
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Affiliation(s)
- Jaya Montecillo
- Christchurch Heart Institute, University of Otago, Christchurch, New Zealand
| | - Thomas Pirker
- Christchurch Heart Institute, University of Otago, Christchurch, New Zealand
| | | | - Janice Chew-Harris
- Christchurch Heart Institute, University of Otago, Christchurch, New Zealand.
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5
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Kim HJ, Kim DJ, Kim SM, Jang YJ. Leucine-Rich Repeat Containing 15-Mediated Cell Adhesion Is Essential for Integrin Signaling in TGF-β1-Induced PDL Fibroblastic Differentiation. Stem Cells 2024; 42:251-265. [PMID: 38051601 DOI: 10.1093/stmcls/sxad090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 11/01/2023] [Indexed: 12/07/2023]
Abstract
Human periodontal ligament cells (hPDLCs) cultured from periodontal ligament (PDL) tissue contain postnatal stem cells that can be differentiated into PDL fibroblasts. We obtained PDL fibroblasts from hPDLCs by treatment with low concentrations of TGF-β1. Since the extracellular matrix and cell surface molecules play an important role in differentiation, we had previously developed a series of monoclonal antibodies against PDL fibroblast-specific cell surface molecules. One of these, the anti-PDL51 antibody, recognized a protein that was significantly upregulated in TGF-β1-induced PDL fibroblasts and highly accumulated in the PDL region of the tooth root. Mass spectrometry revealed that the antigen recognized by the anti-PDL51 antibody was leucine-rich repeat containing 15 (LRRC15), and this antibody specifically recognized the extracellular glycosylated moiety of LRRC15. Experiments presented here show that as fibroblastic differentiation progresses, increased amounts of LRRC15 localized at the cell surface and membrane. Inhibition of LRRC15 by siRNA-mediated depletion and by antibody blocking resulted in downregulation of the representative PDL fibroblastic markers. Moreover, following LRRC15 inhibition, the directed and elongated cell phenotypes disappeared, and the long processes of the end of the cell body were no longer found. Through a specific interaction between integrin β1 and LRRC15, the focal adhesion kinase signaling pathway was activated in PDL fibroblasts. Furthermore, it was shown that increased LRRC15 was important for the activation of the integrin-mediated cell adhesion signal pathway for regulation of cellular functions, including fibroblastic differentiation, proliferation, and cell migration arising from the expression of PDL-related genes in TGF-β1-induced PDL fibroblastic differentiation.
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Affiliation(s)
- Hyun-Jin Kim
- Department of Nanobiomedical Science and BK21 FOUR NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Korea
| | - Dong-Jun Kim
- Department of Nanobiomedical Science and BK21 FOUR NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Korea
| | - Seong-Min Kim
- Department of Nanobiomedical Science and BK21 FOUR NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Korea
| | - Young-Joo Jang
- Department of Nanobiomedical Science and BK21 FOUR NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, Korea
- Department of Oral Biochemistry, School of Dentistry, Dankook University, Cheonan, Korea
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6
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He Y, Døssing KBV, Rossing M, Bagger FO, Kjaer A. uPAR (PLAUR) Marks Two Intra-Tumoral Subtypes of Glioblastoma: Insights from Single-Cell RNA Sequencing. Int J Mol Sci 2024; 25:1998. [PMID: 38396677 PMCID: PMC10889167 DOI: 10.3390/ijms25041998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/20/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
Urokinase plasminogen activator receptor (uPAR) encoded by the PLAUR gene is known as a clinical marker for cell invasiveness in glioblastoma multiforme (GBM). It is additionally implicated in various processes, including angiogenesis and inflammation within the tumor microenvironment. However, there has not been a comprehensive study that depicts the overall functions and molecular cooperators of PLAUR with respect to intra-tumoral subtypes of GBM. Using single-cell RNA sequencing data from 37 GBM patients, we identified PLAUR as a marker gene for two distinct subtypes in GBM. One subtype is featured by inflammatory activities and the other subtype is marked by ECM remodeling processes. Using the whole-transcriptome data from single cells, we are able to uncover the molecular cooperators of PLAUR for both subtypes without presuming biological pathways. Two protein networks comprise the molecular context of PLAUR, with each of the two subtypes characterized by a different dominant network. We concluded that targeting PLAUR directly influences the mechanisms represented by these two protein networks, regardless of the subtype of the targeted cell.
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Affiliation(s)
- Yue He
- Department of Clinical Physiology, Nuclear Medicine and PET & Cluster for Molecular Imaging, Copenhagen University Hospital—Rigshospitalet, 2200 Copenhagen, Denmark; (Y.H.); (K.B.V.D.)
- Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Kristina B. V. Døssing
- Department of Clinical Physiology, Nuclear Medicine and PET & Cluster for Molecular Imaging, Copenhagen University Hospital—Rigshospitalet, 2200 Copenhagen, Denmark; (Y.H.); (K.B.V.D.)
- Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Maria Rossing
- Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital, 2100 Copenhagen, Denmark (F.O.B.)
- Department of Clinical Medicine, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Frederik Otzen Bagger
- Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital, 2100 Copenhagen, Denmark (F.O.B.)
| | - Andreas Kjaer
- Department of Clinical Physiology, Nuclear Medicine and PET & Cluster for Molecular Imaging, Copenhagen University Hospital—Rigshospitalet, 2200 Copenhagen, Denmark; (Y.H.); (K.B.V.D.)
- Department of Biomedical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
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7
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Leth JM, Newcombe EA, Grønnemose AL, Jørgensen JT, Qvist K, Clausen AS, Knudsen LBS, Kjaer A, Kragelund BB, Jørgensen TJD, Ploug M. Targeted imaging of uPAR expression in vivo with cyclic AE105 variants. Sci Rep 2023; 13:17248. [PMID: 37821532 PMCID: PMC10567728 DOI: 10.1038/s41598-023-43934-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 09/30/2023] [Indexed: 10/13/2023] Open
Abstract
A comprehensive literature reports on the correlation between elevated levels of urokinase-type plasminogen activator receptor (uPAR) and the severity of diseases with chronic inflammation including solid cancers. Molecular imaging is widely used as a non-invasive method to locate disease dissemination via full body scans and to stratify patients for targeted treatment. To date, the only imaging probe targeting uPAR that has reached clinical phase-II testing relies on a high-affinity 9-mer peptide (AE105), and several studies by positron emission tomography (PET) scanning or near-infra red (NIR) fluorescence imaging have validated its utility and specificity in vivo. While our previous studies focused on applying various reporter groups, the current study aims to improve uPAR-targeting properties of AE105. We successfully stabilized the small uPAR-targeting core of AE105 by constraining its conformational landscape by disulfide-mediated cyclization. Importantly, this modification mitigated the penalty on uPAR-affinity typically observed after conjugation to macrocyclic chelators. Cyclization did not impair tumor targeting efficiency of AE105 in vivo as assessed by PET imaging and a trend towards increased tracer uptake was observed. In future studies, we predict that this knowledge will aid development of new fluorescent AE105 derivatives with a view to optical imaging of uPAR to assist precision guided cancer surgery.
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Affiliation(s)
- Julie Maja Leth
- Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, 2200, Copenhagen N, Denmark
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, 2200, Copenhagen N, Denmark
| | - Estella Anne Newcombe
- Structural Biology and NMR Laboratory, Copenhagen N, Denmark
- REPIN, Copenhagen N, Denmark
- The Linderstrøm Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Ole Maaloes Vej 5, 2200, Copenhagen N, Denmark
| | - Anne Louise Grønnemose
- Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, 2200, Copenhagen N, Denmark
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, 2200, Copenhagen N, Denmark
- Department of Biochemistry and Molecular Biology, University of Southern Denmark, 5230, Odense M, Denmark
| | - Jesper Tranekjær Jørgensen
- Department of Clinical Physiology and Nuclear Medicine and Cluster for Molecular Imaging, Copenhagen University Hospital - Rigshospitalet, Copenhagen N, Denmark
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen N, Denmark
| | - Katrine Qvist
- Department of Clinical Physiology and Nuclear Medicine and Cluster for Molecular Imaging, Copenhagen University Hospital - Rigshospitalet, Copenhagen N, Denmark
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen N, Denmark
| | - Anne Skovsbo Clausen
- Department of Clinical Physiology and Nuclear Medicine and Cluster for Molecular Imaging, Copenhagen University Hospital - Rigshospitalet, Copenhagen N, Denmark
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen N, Denmark
| | - Line Bruhn Schneider Knudsen
- Department of Clinical Physiology and Nuclear Medicine and Cluster for Molecular Imaging, Copenhagen University Hospital - Rigshospitalet, Copenhagen N, Denmark
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen N, Denmark
| | - Andreas Kjaer
- Department of Clinical Physiology and Nuclear Medicine and Cluster for Molecular Imaging, Copenhagen University Hospital - Rigshospitalet, Copenhagen N, Denmark
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen N, Denmark
| | - Birthe Brandt Kragelund
- Structural Biology and NMR Laboratory, Copenhagen N, Denmark
- REPIN, Copenhagen N, Denmark
- The Linderstrøm Lang Centre for Protein Science, Department of Biology, University of Copenhagen, Ole Maaloes Vej 5, 2200, Copenhagen N, Denmark
| | | | - Michael Ploug
- Finsen Laboratory, Copenhagen University Hospital - Rigshospitalet, 2200, Copenhagen N, Denmark.
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, 2200, Copenhagen N, Denmark.
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8
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Shah MA, Abuzar SM, Ilyas K, Qadees I, Bilal M, Yousaf R, Kassim RMT, Rasul A, Saleem U, Alves MS, Khan H, Blundell R, Jeandet P. Ginsenosides in cancer: Targeting cell cycle arrest and apoptosis. Chem Biol Interact 2023; 382:110634. [PMID: 37451663 DOI: 10.1016/j.cbi.2023.110634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 07/04/2023] [Accepted: 07/12/2023] [Indexed: 07/18/2023]
Abstract
Despite the existence of extensive clinical research and novel therapeutic treatments, cancer remains undefeated and the significant cause of death worldwide. Cancer is a disease in which growth of cells goes out of control, being also able to invade other parts of the body. Cellular division is strictly controlled by multiple checkpoints like G1/S and G2/M which, when dysregulated, lead to uncontrollable cell division. The current remedies which are being utilized to combat cancer are monoclonal antibodies, chemotherapy, cryoablation, and bone marrow transplant etc. and these have also been greatly disheartening because of their serious adverse effects like hypotension, neuropathy, necrosis, leukemia relapse and many more. Bioactive compounds derived from natural products have marked the history of the development of novel drug therapies against cancer among which ginsenosides have no peer as they target several signaling pathways, which when abnormally regulated, lead to cancer. Substantial research has reported that ginsenosides like Rb1, Rb2, Rb3, Rc, Rd, Rg3, Rh2 etc. can prevent and treat cancer by targeting different pathways and molecules by induction of autophagy, neutralizing ROS, induction of cancerous cell death by controlling the p53 pathway, modulation of miRNAs by decreasing Smad2 expression, regulating Bcl-2 expression by normalizing the NF-Kb pathway, inhibition of inflammatory pathways by decreasing the production of cytokines like IL-8, causing cell cycle arrest by restricting cyclin E1 and CDC2, and induction of apoptosis during malignancy by decreasing β-catenin levels etc. In this review, we have analyzed the anti-cancer therapeutic potential of various ginsenoside compounds in order to consider their possible use in new strategies in the fight against cancer.
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Affiliation(s)
| | - Syed Muhammad Abuzar
- Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Kainat Ilyas
- Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Irtaza Qadees
- Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Momna Bilal
- Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Rimsha Yousaf
- Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | | | - Azhar Rasul
- Department of Zoology, Government College University, Faisalabad, Pakistan
| | - Uzma Saleem
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Maria Silvana Alves
- Laboratory of Cellular and Molecular Bioactivity, Department of Pharmaceutical Sciences, Faculty of Pharmacy, Federal University of Juiz de Fora, Minas Gerais, Brazil
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University, Mardan, Pakistan
| | - Renald Blundell
- Department of Physiology and Biochemistry, Faculty of Medicine, University of Malta, Msida, MSD2080, Malta; Centre for Molecular Medicine and Biobanking, University of Malta, MSD2080 Imsida, Malta
| | - Philippe Jeandet
- University of Reims, Research Unit Induced Resistance and Plant Bioprotection USC INRAe 1488 Department of Biology and Biochemistry, Faculty of Sciences, 51100, Reims, France.
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9
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Gao T, Cho EA, Zhang P, Wu J. Inhibition of talin-induced integrin activation by a double-hit stapled peptide. Structure 2023; 31:948-957.e3. [PMID: 37369205 PMCID: PMC10526925 DOI: 10.1016/j.str.2023.05.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 04/20/2023] [Accepted: 05/24/2023] [Indexed: 06/29/2023]
Abstract
Integrins are ubiquitously expressed cell-adhesion proteins. Activation of integrins is triggered by talin through an inside-out signaling pathway, which can be driven by RAP1-interacting adaptor molecule (RIAM) through its interaction with talin at two distinct sites. A helical talin-binding segment (TBS) in RIAM interacts with both sites in talin, leading to integrin activation. The bispecificity inspires a "double-hit" strategy for inhibiting talin-induced integrin activation. We designed an experimental peptidomimetic inhibitor, S-TBS, derived from TBS and containing a molecular staple, which leads to stronger binding to talin and inhibition of talin:integrin interaction. The crystallographic study validates that S-TBS binds to the talin rod through the same interface as TBS. Moreover, the helical S-TBS exhibits excellent cell permeability and effectively suppresses integrin activation in cells in a talin-dependent manner. Our results shed light on a new class of integrin inhibitors and a novel approach to design multi-specific peptidomimetic inhibitors.
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Affiliation(s)
- Tong Gao
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Eun-Ah Cho
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Pingfeng Zhang
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA
| | - Jinhua Wu
- Molecular Therapeutics Program, Fox Chase Cancer Center, Philadelphia, PA 19111, USA.
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10
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Ballonová L, Kulíšková P, Slanina P, Štíchová J, Vlková M, Hakl R, Litzman J, Souček P, Freiberger T. PLAUR splicing pattern in hereditary angioedema patients' monocytes and macrophages. Mol Biol Rep 2023; 50:4975-4982. [PMID: 37086298 DOI: 10.1007/s11033-023-08391-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 03/17/2023] [Indexed: 04/23/2023]
Abstract
BACKGROUND The PLAUR gene encodes the urokinase-like plasminogen activator receptor (uPAR) and may undergo alternative splicing. Excluding cassette exons 3, 5 and 6 from the transcript results in truncated protein variants whose precise functions have not been elucidated yet. The PLAUR gene is one of several expressed in myeloid cells, where uPAR participates in different cellular processes, including the contact activation system and kallikrein-kinin system, which play an important role in hereditary angioedema (HAE) pathogenesis. A hypothesis about the PLAUR splicing pattern impact on HAE severity was tested. METHODS AND RESULTS The RT-PCR quantified by capillary electrophoresis was used. Although no significant difference in alternative transcript frequency was observed between healthy volunteers and HAE patients, a significant increase in all cassette exon inclusion variants was revealed during monocyte-to-macrophage differentiation. CONCLUSIONS PLAUR alternative splicing in monocytes and macrophages neither was different between HAE patients and healthy controls, nor reflected disease severity. However, the results showed an PLAUR splicing pattern was changing during monocyte-to-macrophage differentiation, but the significance of these changes is unknown and awaits future clarification.
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Affiliation(s)
- Lucie Ballonová
- Centre of Cardiovascular Surgery and Transplantation, Brno, Czech Republic
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Petra Kulíšková
- Centre of Cardiovascular Surgery and Transplantation, Brno, Czech Republic
- Department of Clinical Immunology and Allergology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Peter Slanina
- Department of Clinical Immunology and Allergology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Julie Štíchová
- Department of Clinical Immunology and Allergology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Marcela Vlková
- Department of Clinical Immunology and Allergology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Roman Hakl
- Department of Clinical Immunology and Allergology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Jiří Litzman
- Department of Clinical Immunology and Allergology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - Přemysl Souček
- Centre of Cardiovascular Surgery and Transplantation, Brno, Czech Republic.
- Department of Clinical Immunology and Allergology, Faculty of Medicine, Masaryk University, Brno, Czech Republic.
| | - Tomáš Freiberger
- Centre of Cardiovascular Surgery and Transplantation, Brno, Czech Republic
- Department of Clinical Immunology and Allergology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
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11
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Urokinase-Type Plasminogen Activator Receptor (uPAR) Cooperates with Mutated KRAS in Regulating Cellular Plasticity and Gemcitabine Response in Pancreatic Adenocarcinomas. Cancers (Basel) 2023; 15:cancers15051587. [PMID: 36900379 PMCID: PMC10000455 DOI: 10.3390/cancers15051587] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
BACKGROUND Pancreatic ductal adenocarcinoma (PDAC) remains one of the most lethal cancers. Given the currently limited therapeutic options, the definition of molecular subgroups with the development of tailored therapies remains the most promising strategy. Patients with high-level gene amplification of urokinase plasminogen activator receptor (uPAR/PLAUR) have an inferior prognosis. We analyzed the uPAR function in PDAC to understand this understudied PDAC subgroup's biology better. METHODS A total of 67 PDAC samples with clinical follow-up and TCGA gene expression data from 316 patients were used for prognostic correlations. Gene silencing by CRISPR/Cas9, as well as transfection of uPAR and mutated KRAS, were used in PDAC cell lines (AsPC-1, PANC-1, BxPC3) treated with gemcitabine to study the impact of these two molecules on cellular function and chemoresponse. HNF1A and KRT81 were surrogate markers for the exocrine-like and quasi-mesenchymal subgroup of PDAC, respectively. RESULTS High levels of uPAR were correlated with significantly shorter survival in PDAC, especially in the subgroup of HNF1A-positive exocrine-like tumors. uPAR knockout by CRISPR/Cas9 resulted in activation of FAK, CDC42, and p38, upregulation of epithelial makers, decreased cell growth and motility, and resistance against gemcitabine that could be reversed by re-expression of uPAR. Silencing of KRAS in AsPC1 using siRNAs reduced uPAR levels significantly, and transfection of mutated KRAS in BxPC-3 cells rendered the cell more mesenchymal and increased sensitivity towards gemcitabine. CONCLUSIONS Activation of uPAR is a potent negative prognostic factor in PDAC. uPAR and KRAS cooperate in switching the tumor from a dormant epithelial to an active mesenchymal state, which likely explains the poor prognosis of PDAC with high uPAR. At the same time, the active mesenchymal state is more vulnerable to gemcitabine. Strategies targeting either KRAS or uPAR should consider this potential tumor-escape mechanism.
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12
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Lourenço AL, Chuo SW, Bohn MF, Hann B, Khan S, Yevalekar N, Patel N, Yang T, Xu L, Lv D, Drakas R, Lively S, Craik CS. High-throughput optofluidic screening of single B cells identifies novel cross-reactive antibodies as inhibitors of uPAR with antibody-dependent effector functions. MAbs 2023; 15:2184197. [PMID: 36859773 PMCID: PMC9988344 DOI: 10.1080/19420862.2023.2184197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
The urokinase-type plasminogen activator receptor (uPAR) is an essential regulator for cell signaling in tumor cell proliferation, adhesion, and metastasis. The ubiquitous nature of uPAR in many aggressive cancer types makes uPAR an attractive target for immunotherapy. Here, we present a rapid and successful workflow for developing cross-reactive anti-uPAR recombinant antibodies (rAbs) using high-throughput optofluidic screening of single B-cells from human uPAR-immunized mice. A total of 80 human and cynomolgus uPAR cross-reactive plasma cells were identified, and selected mouse VH/VL domains were linked to the trastuzumab (Herceptin®) constant domains for the expression of mouse-human chimeric antibodies. The resulting rAbs were characterized by their tumor-cell recognition, binding activity, and cell adhesion inhibition on triple-negative breast cancer cells. In addition, the rAbs were shown to enact antibody-dependent cellular cytotoxicity (ADCC) in the presence of either human natural killer cells or peripheral blood mononuclear cells, and were evaluated for the potential use of uPAR-targeting antibody-drug conjugates (ADCs). Three lead antibodies (11857, 8163, and 3159) were evaluated for their therapeutic efficacy in vivo and were shown to suppress tumor growth. Finally, the binding epitopes of the lead antibodies were characterized, providing information on their unique binding modes to uPAR. Altogether, the strategy identified unique cross-reactive antibodies with ADCC, ADC, and functional inhibitory effects by targeting cell-surface uPAR, that can be tested in safety studies and serve as potential immunotherapeutics.
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Affiliation(s)
- André Luiz Lourenço
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California, USA
| | - Shih-Wei Chuo
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California, USA
| | - Markus F Bohn
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California, USA
| | - Byron Hann
- Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California, USA
| | - Shireen Khan
- ChemPartner, South San Francisco, California, USA
| | | | - Nitin Patel
- ChemPartner, South San Francisco, California, USA
| | - Teddy Yang
- Shanghai ChemPartner Co Ltd, Shanghai, China
| | - Lina Xu
- Shanghai ChemPartner Co Ltd, Shanghai, China
| | - Dandan Lv
- Shanghai ChemPartner Co Ltd, Shanghai, China
| | - Robert Drakas
- ShangPharma Innovation Inc, South San Francisco, California, USA
| | - Sarah Lively
- ChemPartner, South San Francisco, California, USA
| | - Charles S Craik
- Department of Pharmaceutical Chemistry, University of California San Francisco, San Francisco, California, USA.,Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California, USA
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13
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Caveolin-1 dolines form a distinct and rapid caveolae-independent mechanoadaptation system. Nat Cell Biol 2023; 25:120-133. [PMID: 36543981 PMCID: PMC9859760 DOI: 10.1038/s41556-022-01034-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 10/21/2022] [Indexed: 12/24/2022]
Abstract
In response to different types and intensities of mechanical force, cells modulate their physical properties and adapt their plasma membrane (PM). Caveolae are PM nano-invaginations that contribute to mechanoadaptation, buffering tension changes. However, whether core caveolar proteins contribute to PM tension accommodation independently from the caveolar assembly is unknown. Here we provide experimental and computational evidence supporting that caveolin-1 confers deformability and mechanoprotection independently from caveolae, through modulation of PM curvature. Freeze-fracture electron microscopy reveals that caveolin-1 stabilizes non-caveolar invaginations-dolines-capable of responding to low-medium mechanical forces, impacting downstream mechanotransduction and conferring mechanoprotection to cells devoid of caveolae. Upon cavin-1/PTRF binding, doline size is restricted and membrane buffering is limited to relatively high forces, capable of flattening caveolae. Thus, caveolae and dolines constitute two distinct albeit complementary components of a buffering system that allows cells to adapt efficiently to a broad range of mechanical stimuli.
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14
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Lolo FN, Pavón DM, Grande-García A, Elosegui-Artola A, Segatori VI, Sánchez S, Trepat X, Roca-Cusachs P, del Pozo MA. Caveolae couple mechanical stress to integrin recycling and activation. eLife 2022; 11:e82348. [PMID: 36264062 PMCID: PMC9747151 DOI: 10.7554/elife.82348] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 10/19/2022] [Indexed: 12/15/2022] Open
Abstract
Cells are subjected to multiple mechanical inputs throughout their lives. Their ability to detect these environmental cues is called mechanosensing, a process in which integrins play an important role. During cellular mechanosensing, plasma membrane (PM) tension is adjusted to mechanical stress through the buffering action of caveolae; however, little is known about the role of caveolae in early integrin mechanosensing regulation. Here, we show that Cav1KO fibroblasts increase adhesion to FN-coated beads when pulled with magnetic tweezers, as compared to wild type fibroblasts. This phenotype is Rho-independent and mainly derived from increased active β1-integrin content on the surface of Cav1KO fibroblasts. Florescence recovery after photobleaching analysis and endocytosis/recycling assays revealed that active β1-integrin is mostly endocytosed through the clathrin independent carrier/glycosylphosphatidyl inositol (GPI)-enriched endocytic compartment pathway and is more rapidly recycled to the PM in Cav1KO fibroblasts, in a Rab4 and PM tension-dependent manner. Moreover, the threshold for PM tension-driven β1-integrin activation is lower in Cav1KO mouse embryonic fibroblasts (MEFs) than in wild type MEFs, through a mechanism dependent on talin activity. Our findings suggest that caveolae couple mechanical stress to integrin cycling and activation, thereby regulating the early steps of the cellular mechanosensing response.
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Affiliation(s)
- Fidel-Nicolás Lolo
- Mechanoadaptation and Caveolae Biology Laboratory, Cell and developmental Biology Area, Centro Nacional de Investigaciones CardiovascularesMadridSpain
| | - Dácil María Pavón
- Mechanoadaptation and Caveolae Biology Laboratory, Cell and developmental Biology Area, Centro Nacional de Investigaciones CardiovascularesMadridSpain
| | - Araceli Grande-García
- Mechanoadaptation and Caveolae Biology Laboratory, Cell and developmental Biology Area, Centro Nacional de Investigaciones CardiovascularesMadridSpain
| | | | - Valeria Inés Segatori
- Mechanoadaptation and Caveolae Biology Laboratory, Cell and developmental Biology Area, Centro Nacional de Investigaciones CardiovascularesMadridSpain
| | - Sara Sánchez
- Mechanoadaptation and Caveolae Biology Laboratory, Cell and developmental Biology Area, Centro Nacional de Investigaciones CardiovascularesMadridSpain
| | - Xavier Trepat
- Institute for Bioengineering of CataloniaBarcelonaSpain
| | | | - Miguel A del Pozo
- Mechanoadaptation and Caveolae Biology Laboratory, Cell and developmental Biology Area, Centro Nacional de Investigaciones CardiovascularesMadridSpain
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15
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Altered Extracellular Matrix as an Alternative Risk Factor for Epileptogenicity in Brain Tumors. Biomedicines 2022; 10:biomedicines10102475. [PMID: 36289737 PMCID: PMC9599244 DOI: 10.3390/biomedicines10102475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/23/2022] [Accepted: 09/26/2022] [Indexed: 11/17/2022] Open
Abstract
Seizures are one of the most common symptoms of brain tumors. The incidence of seizures differs among brain tumor type, grade, location and size, but paediatric-type diffuse low-grade gliomas/glioneuronal tumors are often highly epileptogenic. The extracellular matrix (ECM) is known to play a role in epileptogenesis and tumorigenesis because it is involved in the (re)modelling of neuronal connections and cell-cell signaling. In this review, we discuss the epileptogenicity of brain tumors with a focus on tumor type, location, genetics and the role of the extracellular matrix. In addition to functional problems, epileptogenic tumors can lead to increased morbidity and mortality, stigmatization and life-long care. The health advantages can be major if the epileptogenic properties of brain tumors are better understood. Surgical resection is the most common treatment of epilepsy-associated tumors, but post-surgery seizure-freedom is not always achieved. Therefore, we also discuss potential novel therapies aiming to restore ECM function.
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16
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Chighizola M, Dini T, Marcotti S, D'Urso M, Piazzoni C, Borghi F, Previdi A, Ceriani L, Folliero C, Stramer B, Lenardi C, Milani P, Podestà A, Schulte C. The glycocalyx affects the mechanotransductive perception of the topographical microenvironment. J Nanobiotechnology 2022; 20:418. [PMID: 36123687 PMCID: PMC9484177 DOI: 10.1186/s12951-022-01585-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 07/29/2022] [Indexed: 11/10/2022] Open
Abstract
The cell/microenvironment interface is the starting point of integrin-mediated mechanotransduction, but many details of mechanotransductive signal integration remain elusive due to the complexity of the involved (extra)cellular structures, such as the glycocalyx. We used nano-bio-interfaces reproducing the complex nanotopographical features of the extracellular matrix to analyse the glycocalyx impact on PC12 cell mechanosensing at the nanoscale (e.g., by force spectroscopy with functionalised probes). Our data demonstrates that the glycocalyx configuration affects spatio-temporal nanotopography-sensitive mechanotransductive events at the cell/microenvironment interface. Opposing effects of major glycocalyx removal were observed, when comparing flat and specific nanotopographical conditions. The excessive retrograde actin flow speed and force loading are strongly reduced on certain nanotopographies upon strong reduction of the native glycocalyx, while on the flat substrate we observe the opposite trend. Our results highlight the importance of the glycocalyx configuration in a molecular clutch force loading-dependent cellular mechanism for mechanosensing of microenvironmental nanotopographical features.
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Affiliation(s)
- Matteo Chighizola
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Tania Dini
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy.,The FIRC Institute of Molecular Oncology (IFOM), Milan, Italy
| | - Stefania Marcotti
- Randall Centre for Cell and Molecular Biophysics, King's College London, London, UK
| | - Mirko D'Urso
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy.,Department of Biomedical Engineering, Institute for Complex Molecular Systems, Eindhoven University of Technology, Eindhoven, Netherlands
| | - Claudio Piazzoni
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Francesca Borghi
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Anita Previdi
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Laura Ceriani
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Claudia Folliero
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy.,The FIRC Institute of Molecular Oncology (IFOM), Milan, Italy
| | - Brian Stramer
- Randall Centre for Cell and Molecular Biophysics, King's College London, London, UK
| | - Cristina Lenardi
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Paolo Milani
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy
| | - Alessandro Podestà
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy.
| | - Carsten Schulte
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics "Aldo Pontremoli", University of Milan, Milan, Italy.
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17
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Mechanical Stretch Induced Skin Regeneration: Molecular and Cellular Mechanism in Skin Soft Tissue Expansion. Int J Mol Sci 2022; 23:ijms23179622. [PMID: 36077018 PMCID: PMC9455829 DOI: 10.3390/ijms23179622] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/16/2022] [Accepted: 08/23/2022] [Indexed: 11/17/2022] Open
Abstract
Skin soft tissue expansion is one of the most basic and commonly used techniques in plastic surgery to obtain excess skin for a variety of medical uses. However, skin soft tissue expansion is faced with many problems, such as long treatment process, poor skin quality, high retraction rate, and complications. Therefore, a deeper understanding of the mechanisms of skin soft tissue expansion is needed. The key to skin soft tissue expansion lies in the mechanical stretch applied to the skin by an inflatable expander. Mechanical stimulation activates multiple signaling pathways through cellular adhesion molecules and regulates gene expression profiles in cells. Meanwhile, various types of cells contribute to skin expansion, including keratinocytes, dermal fibroblasts, and mesenchymal stem cells, which are also regulated by mechanical stretch. This article reviews the molecular and cellular mechanisms of skin regeneration induced by mechanical stretch during skin soft tissue expansion.
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18
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Adherens junctions stimulate and spatially guide integrin activation and extracellular matrix deposition. Cell Rep 2022; 40:111091. [PMID: 35858563 DOI: 10.1016/j.celrep.2022.111091] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 05/04/2022] [Accepted: 06/22/2022] [Indexed: 11/03/2022] Open
Abstract
Cadherins and integrins are intrinsically linked through the actin cytoskeleton and are largely responsible for the mechanical integrity and organization of tissues. We show that cadherin clustering stimulates and spatially guides integrin activation. Adherens junction (AJ)-associated integrin activation depends on locally generated tension and does not require extracellular matrix ligands. It leads to the creation of primed integrin clusters, which spatially determine where focal adhesions will form if ligands are present and where ligands will be deposited. AJs that display integrin activation are targeted by microtubules facilitating their disassembly via caveolin-based endocytosis, showing that integrin activation impacts the stability of the core cadherin complex. Thus, the interplay between cadherins and integrins is more intimate than what was once believed and is rooted in the capacity of active integrins to be stabilized via AJ-generated tension. Altogether, our data establish a mechanism of cross-regulation between cadherins and integrins.
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19
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Stefanova V, Crowley VM, Weckman AM, Kain KC. suPAR to Risk-Stratify Patients With Malaria. Front Immunol 2022; 13:931321. [PMID: 35757694 PMCID: PMC9226448 DOI: 10.3389/fimmu.2022.931321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 05/13/2022] [Indexed: 11/13/2022] Open
Abstract
Severe malaria (SM) is a leading cause of global morbidity and mortality, particularly in children in sub-Saharan Africa. However, existing malaria diagnostic tests do not reliably identify children at risk of severe and fatal outcomes. Dysregulated host immune and endothelial activation contributes to the pathogenesis of SM. Current research suggests that measuring markers of these pathways at presentation may have clinical utility as prognostic indicators of disease progression and risk of death. In this review, we focus on the available evidence implicating soluble urokinase-type plasminogen activator receptor (suPAR) as a novel and early predictor of severe and fatal malaria and discuss its potential utility for malaria triage and management.
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Affiliation(s)
- Veselina Stefanova
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Valerie M Crowley
- Sandra A. Rotman (SAR) Laboratories, Sandra Rotman Centre for Global Health, University Health Network-Toronto General Hospital, Toronto, ON, Canada.,Department of Experimental Therapeutics, University Health Network-Toronto General Hospital, Toronto, ON, Canada
| | - Andrea M Weckman
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Sandra A. Rotman (SAR) Laboratories, Sandra Rotman Centre for Global Health, University Health Network-Toronto General Hospital, Toronto, ON, Canada.,Department of Experimental Therapeutics, University Health Network-Toronto General Hospital, Toronto, ON, Canada
| | - Kevin C Kain
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Sandra A. Rotman (SAR) Laboratories, Sandra Rotman Centre for Global Health, University Health Network-Toronto General Hospital, Toronto, ON, Canada.,Department of Experimental Therapeutics, University Health Network-Toronto General Hospital, Toronto, ON, Canada.,Faculty of Medicine, University of Toronto, Toronto, ON, Canada.,Tropical Disease Unit, Division of Infectious Diseases, Department of Medicine, University of Toronto, Toronto, ON, Canada
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20
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Alfano D, Franco P, Stoppelli MP. Modulation of Cellular Function by the Urokinase Receptor Signalling: A Mechanistic View. Front Cell Dev Biol 2022; 10:818616. [PMID: 35493073 PMCID: PMC9045800 DOI: 10.3389/fcell.2022.818616] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 03/15/2022] [Indexed: 12/15/2022] Open
Abstract
Urokinase-type plasminogen activator receptor (uPAR or CD87) is a glycosyl-phosphatidyl-inositol anchored (GPI) membrane protein. The uPAR primary ligand is the serine protease urokinase (uPA), converting plasminogen into plasmin, a broad spectrum protease, active on most extracellular matrix components. Besides uPA, the uPAR binds specifically also to the matrix protein vitronectin and, therefore, is regarded also as an adhesion receptor. Complex formation of the uPAR with diverse transmembrane proteins, including integrins, formyl peptide receptors, G protein-coupled receptors and epidermal growth factor receptor results in intracellular signalling. Thus, the uPAR is a multifunctional receptor coordinating surface-associated pericellular proteolysis and signal transduction, thereby affecting physiological and pathological mechanisms. The uPAR-initiated signalling leads to remarkable cellular effects, that include increased cell migration, adhesion, survival, proliferation and invasion. Although this is beyond the scope of this review, the uPA/uPAR system is of great interest to cancer research, as it is associated to aggressive cancers and poor patient survival. Increasing evidence links the uPA/uPAR axis to epithelial to mesenchymal transition, a highly dynamic process, by which epithelial cells can convert into a mesenchymal phenotype. Furthermore, many reports indicate that the uPAR is involved in the maintenance of the stem-like phenotype and in the differentiation process of different cell types. Moreover, the levels of anchor-less, soluble form of uPAR, respond to a variety of inflammatory stimuli, including tumorigenesis and viral infections. Finally, the role of uPAR in virus infection has received increasing attention, in view of the Covid-19 pandemics and new information is becoming available. In this review, we provide a mechanistic perspective, via the detailed examination of consolidated and recent studies on the cellular responses to the multiple uPAR activities.
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21
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Zhao B, Wu C, Sammad A, Ma Z, Suo L, Wu Y, Fu X. The fiber diameter traits of Tibetan cashmere goats are governed by the inherent differences in stress, hypoxic, and metabolic adaptations: an integrative study of proteome and transcriptome. BMC Genomics 2022; 23:191. [PMID: 35255833 PMCID: PMC8903710 DOI: 10.1186/s12864-022-08422-x] [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: 12/02/2021] [Accepted: 02/24/2022] [Indexed: 12/13/2022] Open
Abstract
Background Tibetan cashmere goats are served as a valuable model for high altitude adaptation and hypoxia complications related studies, while the cashmere produced by these goats is an important source of income for the herders. The aim of this study was to investigate the differences in protein abundance underlying the fine (average 12.20 ± 0.03 μm of mean fiber diameter) and coarse cashmere (average 14.67 ± 0.05 μm of mean fiber diameter) producing by Tibetan cashmere goats. We systematically investigated the genetic determinants of fiber diameter by integrated analysis with proteomic and transcriptomic datasets from skin tissues of Tibetan cashmere goats. Results We identified 1980 proteins using a label-free proteomics approach. They were annotated to three different databases, while 1730 proteins were mapped to the original protein coding genes (PCGs) of the transcriptomic study. Comparative analyses of cashmere with extremely fine vs. coarse phenotypes yielded 29 differentially expressed proteins (DEPs), for instance, APOH, GANAB, AEBP1, CP, CPB2, GPR142, VTN, IMPA1, CTSZ, GLB1, and HMCN1. Functional enrichment analysis of these DEPs revealed their involvement in oxidation-reduction process, cell redox homeostasis, metabolic, PI3K-Akt, MAPK, and Wnt signaling pathways. Transcription factors enrichment analysis revealed the proteins mainly belong to NF-YB family, HMG family, CSD family. We further validated the protein abundance of four DEPs (GC, VTN, AEBP1, and GPR142) through western blot, and considered they were the most potential candidate genes for cashmere traits in Tibetan cashmere goats. Conclusions These analyses indicated that the major biological variations underlying the difference of cashmere fiber diameter in Tibetan cashmere goats were attributed to the inherent adaptations related to metabolic, hypoxic, and stress response differences. This study provided novel insights into the breeding strategies for cashmere traits and enhance the understanding of the biological and genetic mechanisms of cashmere traits in Tibetan cashmere goats. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08422-x.
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Affiliation(s)
- Bingru Zhao
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Cuiling Wu
- College of Animal Science, Xinjiang Agricultural University, Urumqi, China
| | - Abdul Sammad
- National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding, and Reproduction, Ministry of Agriculture, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Zhen Ma
- Key Laboratory of Genetics Breeding and Reproduction of the Wool Sheep & Cashmere Goat in Xinjiang, Institute of Animal Science, Xinjiang Academy of Animal Sciences, Urumqi, China
| | - Langda Suo
- Institute of Animal Science, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa, China
| | - Yujiang Wu
- Institute of Animal Science, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa, China.
| | - Xuefeng Fu
- Key Laboratory of Genetics Breeding and Reproduction of the Wool Sheep & Cashmere Goat in Xinjiang, Institute of Animal Science, Xinjiang Academy of Animal Sciences, Urumqi, China.
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22
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Lv T, Zhao Y, Jiang X, Yuan H, Wang H, Cui X, Xu J, Zhao J, Wang J. uPAR: An Essential Factor for Tumor Development. J Cancer 2021; 12:7026-7040. [PMID: 34729105 PMCID: PMC8558663 DOI: 10.7150/jca.62281] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 10/02/2021] [Indexed: 02/06/2023] Open
Abstract
Tumorigenesis is closely related to the loss of control of many genes. Urokinase-type plasminogen activator receptor (uPAR), a glycolipid-anchored protein on the cell surface, is controlled by many factors in tumorigenesis and is expressed in many tumor tissues. In this review, we summarize the regulatory effects of the uPAR signaling pathway on processes and factors related to tumor progression, such as tumor cell proliferation, adhesion, metastasis, glycolysis, tumor microenvironment and angiogenesis. Overall, the evidence accumulated to date suggests that uPAR induction by tumor progression may be one of the most important factors affecting therapeutic efficacy. An improved understanding of the interactions between uPAR and its coreceptors in cancer will provide critical biomolecular information that may help to better predict the disease course and response to therapy.
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Affiliation(s)
- Tao Lv
- College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan, China 655011.,Key Laboratory of Yunnan Province Universities of the Diversity and Ecological Adaptive Evolution for Animals and Plants on YunGui Plateau, Qujing Normal University, Qujing, China 655011
| | - Ying Zhao
- College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan, China 655011
| | - Xinni Jiang
- School of Biological Sciences and Technology, Chengdu Medical College, Chengdu, Sichuan, China 610500
| | - Hemei Yuan
- College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan, China 655011
| | - Haibo Wang
- College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan, China 655011.,Key Laboratory of Yunnan Province Universities of the Diversity and Ecological Adaptive Evolution for Animals and Plants on YunGui Plateau, Qujing Normal University, Qujing, China 655011
| | - Xuelin Cui
- College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan, China 655011
| | - Jiashun Xu
- College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan, China 655011
| | - Jingye Zhao
- College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan, China 655011
| | - Jianlin Wang
- College of Chemistry and Environmental Science, Qujing Normal University, Qujing, Yunnan, China 655011
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Metrangolo V, Ploug M, Engelholm LH. The Urokinase Receptor (uPAR) as a "Trojan Horse" in Targeted Cancer Therapy: Challenges and Opportunities. Cancers (Basel) 2021; 13:cancers13215376. [PMID: 34771541 PMCID: PMC8582577 DOI: 10.3390/cancers13215376] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/15/2021] [Accepted: 10/19/2021] [Indexed: 12/23/2022] Open
Abstract
Simple Summary Discovered more than three decades ago, the urokinase-type plasminogen activator receptor (uPAR) has now firmly established itself as a versatile molecular target holding promise for the treatment of aggressive malignancies. The copious abundance of uPAR in virtually all human cancerous tissues versus their healthy counterparts has fostered a gradual shift in the therapeutic landscape targeting this receptor from function inhibition to cytotoxic approaches to selectively eradicate the uPAR-expressing cells by delivering a targeted cytotoxic insult. Multiple avenues are being explored in a preclinical setting, including the more innovative immune- or stroma targeting therapies. This review discusses the current state of these strategies, their potentialities, and challenges, along with future directions in the field of uPAR targeting. Abstract One of the largest challenges to the implementation of precision oncology is identifying and validating selective tumor-driving targets to enhance the therapeutic efficacy while limiting off-target toxicity. In this context, the urokinase-type plasminogen activator receptor (uPAR) has progressively emerged as a promising therapeutic target in the management of aggressive malignancies. By focalizing the plasminogen activation cascade and subsequent extracellular proteolysis on the cell surface of migrating cells, uPAR endows malignant cells with a high proteolytic and migratory potential to dissolve the restraining extracellular matrix (ECM) barriers and metastasize to distant sites. uPAR is also assumed to choreograph multiple other neoplastic stages via a complex molecular interplay with distinct cancer-associated signaling pathways. Accordingly, high uPAR expression is observed in virtually all human cancers and is frequently associated with poor patient prognosis and survival. The promising therapeutic potential unveiled by the pleiotropic nature of this receptor has prompted the development of distinct targeted intervention strategies. The present review will focus on recently emerged cytotoxic approaches emphasizing the novel technologies and related limits hindering their application in the clinical setting. Finally, future research directions and emerging opportunities in the field of uPAR targeting are also discussed.
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Affiliation(s)
- Virginia Metrangolo
- The Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen, Denmark; (V.M.); (M.P.)
- Biotech Research & Innovation Centre (BRIC), Department of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Michael Ploug
- The Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen, Denmark; (V.M.); (M.P.)
- Biotech Research & Innovation Centre (BRIC), Department of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark
| | - Lars H. Engelholm
- The Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen, Denmark; (V.M.); (M.P.)
- Biotech Research & Innovation Centre (BRIC), Department of Health and Medical Sciences, University of Copenhagen, DK-2200 Copenhagen, Denmark
- Correspondence: ; Tel.: +45-31-43-20-77
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Zuchtriegel G, Uhl B, Pick R, Ramsauer M, Dominik J, Mittmann LA, Canis M, Kanse S, Sperandio M, Krombach F, Reichel CA. Vitronectin stabilizes intravascular adhesion of neutrophils by coordinating β2 integrin clustering. Haematologica 2021; 106:2641-2653. [PMID: 32703799 PMCID: PMC8485676 DOI: 10.3324/haematol.2019.226241] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Indexed: 11/09/2022] Open
Abstract
The recruitment of neutrophils from the microvasculature to the site of injury or infection represents a key event in the inflammatory response. Vitronectin (VN) is a multifunctional macromolecule abundantly present in blood and extracellular matrix. The role of this glycoprotein in the extravasation process of circulating neutrophils remains elusive. Employing advanced in vivo/ex vivo imaging techniques in different mouse models as well as in vitro methods, we uncovered a previously unrecognized function of VN in the transition of dynamic to static intravascular interactions of neutrophils with microvascular endothelial cells. These distinct properties of VN require the heteromerization of this glycoprotein with plasminogen activator inhibitor-1 (PAI- 1) on the activated venular endothelium and subsequent interactions of this protein complex with the scavenger receptor low-density lipoprotein receptor-related protein-1 on intravascularly adhering neutrophils. This induces p38 mitogen-activated protein kinases-dependent intracellular signaling events which, in turn, regulates the proper clustering of the b2 integrin lymphocyte function associated antigen-1 on the surface of these immune cells. As a consequence of this molecular interplay, neutrophils become able to stabilize their adhesion to the microvascular endothelium and, subsequently, to extravasate to the perivascular tissue. Hence, endothelial-bound VN-PAI-1 heteromers stabilize intravascular adhesion of neutrophils by coordinating b2 integrin clustering on the surface of these immune cells, thereby effectively controlling neutrophil trafficking to inflamed tissue. Targeting this protein complex might be beneficial for the prevention and treatment of inflammatory pathologies.
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Affiliation(s)
- Gabriele Zuchtriegel
- Walter Brendel Centre of Experimental Medicine and Klinikum der Universität München, Germany
| | - Bernd Uhl
- Walter Brendel Centre of Experimental Medicine and Klinikum der Universität München, Germany
| | - Robert Pick
- Dept. of Otorhinolaryngology, Klinikum der Universität Munchen, Munich, Germany
| | - Michaela Ramsauer
- Walter Brendel Centre of Experimental Medicine and Klinikum der Universität Munchen, Germany
| | - Julian Dominik
- Dept. of Otorhinolaryngology, Klinikum der Universität Munchen, Munich, Germany
| | - Laura A Mittmann
- Walter Brendel Centre of Experimental Medicine and Klinikum der Universität Munchen, Germany
| | | | - Sandip Kanse
- Institute of Basic Medical Sciences, University of Oslo, Norway
| | - Markus Sperandio
- Dept. of Otorhinolaryngology, Klinikum der Universität Munchen, Munich, Germany
| | - Fritz Krombach
- Walter Brendel Centre of Experimental Medicine, Munich, Germany
| | - Christoph A Reichel
- Walter Brendel Centre of Experimental Medicine and Klinikum der Universität Munchen, Germany
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25
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Leth JM, Ploug M. Targeting the Urokinase-Type Plasminogen Activator Receptor (uPAR) in Human Diseases With a View to Non-invasive Imaging and Therapeutic Intervention. Front Cell Dev Biol 2021; 9:732015. [PMID: 34490277 PMCID: PMC8417595 DOI: 10.3389/fcell.2021.732015] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 07/26/2021] [Indexed: 12/31/2022] Open
Abstract
The interaction between the serine protease urokinase-type plasminogen activator (uPA) and its glycolipid-anchored receptor (uPAR) focalizes plasminogen activation to cell surfaces, thereby regulating extravascular fibrinolysis, cell adhesion, and migration. uPAR belongs to the Ly6/uPAR (LU) gene superfamily and the high-affinity binding site for uPA is assembled by a dynamic association of its three consecutive LU domains. In most human solid cancers, uPAR is expressed at the invasive areas of the tumor-stromal microenvironment. High levels of uPAR in resected tumors or shed to the plasma of cancer patients are robustly associated with poor prognosis and increased risk of relapse and metastasis. Over the years, a plethora of different strategies to inhibit uPA and uPAR function have been designed and investigated in vitro and in vivo in mouse models, but so far none have been implemented in the clinics. In recent years, uPAR-targeting with the intent of cytotoxic eradication of uPAR-expressing cells have nonetheless gained increasing momentum. Another avenue that is currently being explored is non-invasive imaging with specific uPAR-targeted reporter-molecules containing positron emitting radionuclides or near-infrared (NIR) florescence probes with the overarching aim of being able to: (i) localize disease dissemination using positron emission tomography (PET) and (ii) assist fluorescence guided surgery using optical imaging. In this review, we will discuss these advancements with special emphasis on applications using a small 9-mer peptide antagonist that targets uPAR with high affinity.
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Affiliation(s)
- Julie Maja Leth
- Finsen Laboratory, Rigshospitalet, Copenhagen, Denmark.,Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Copenhagen, Denmark
| | - Michael Ploug
- Finsen Laboratory, Rigshospitalet, Copenhagen, Denmark.,Biotech Research and Innovation Centre (BRIC), University of Copenhagen, Copenhagen, Denmark
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26
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Experimental and Clinical Evidence Supports the Use of Urokinase Plasminogen Activation System Components as Clinically Relevant Biomarkers in Gastroesophageal Adenocarcinoma. Cancers (Basel) 2021; 13:cancers13164097. [PMID: 34439251 PMCID: PMC8393967 DOI: 10.3390/cancers13164097] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 08/02/2021] [Accepted: 08/09/2021] [Indexed: 12/18/2022] Open
Abstract
Simple Summary Patients with gastric and oesophageal adenocarcinomas (GOCs) have short life expectancies as their tumours spread to other sites early. This is facilitated by the increased expression of the urokinase plasminogen activation system (uPAS); a feature of the majority of GOCs. There is increasing appreciation of the importance of uPAS expression in a range of cell types within the tumour microenvironment. Abundant clinical evidence indicates that altered expression of uPAS proteins is associated with worse outcomes, including time to tumour recurrence and patient survival. Emerging technologies, including liquid biopsy, suggest a role of uPAS for the detection of circulating tumour cells, which are responsible for the dissemination of cancers. We review and summarise pre-clinical and clinical data that supports the use of uPAS as a biomarker in GOC. Abstract Gastric and oesophageal cancers (GOCs) are lethal cancers which metastasise early and recur frequently, even after definitive surgery. The urokinase plasminogen activator system (uPAS) is strongly implicated in the invasion and metastasis of many aggressive tumours including GOCs. Urokinase plasminogen activator (uPA) interaction with its receptor, urokinase plasminogen activator receptor (uPAR), leads to proteolytic activation of plasminogen to plasmin, a broad-spectrum protease which enables tumour cell invasion and dissemination to distant sites. uPA, uPAR and the plasminogen activator inhibitor type 1 (PAI-1) are overexpressed in some GOCs. Accumulating evidence points to a causal role of activated receptor tyrosine kinase pathways enhancing uPAS expression in GOCs. Expression of these components are associated with poorer clinicopathological features and patient survival. Stromal cells, including tumour-associated macrophages and myofibroblasts, also express the key uPAS proteins, supporting the argument of stromal involvement in GOC progression and adverse effect on patient survival. uPAS proteins can be detected on circulating leucocytes, circulating tumour cells and within the serum; all have the potential to be developed into circulating biomarkers of GOC. Herein, we review the experimental and clinical evidence supporting uPAS expression as clinical biomarker in GOC, with the goal of developing targeted therapeutics against the uPAS.
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27
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Pearson JD, Huang K, Pacal M, McCurdy SR, Lu S, Aubry A, Yu T, Wadosky KM, Zhang L, Wang T, Gregorieff A, Ahmad M, Dimaras H, Langille E, Cole SPC, Monnier PP, Lok BH, Tsao MS, Akeno N, Schramek D, Wikenheiser-Brokamp KA, Knudsen ES, Witkiewicz AK, Wrana JL, Goodrich DW, Bremner R. Binary pan-cancer classes with distinct vulnerabilities defined by pro- or anti-cancer YAP/TEAD activity. Cancer Cell 2021; 39:1115-1134.e12. [PMID: 34270926 PMCID: PMC8981970 DOI: 10.1016/j.ccell.2021.06.016] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 09/17/2020] [Accepted: 06/24/2021] [Indexed: 12/13/2022]
Abstract
Cancer heterogeneity impacts therapeutic response, driving efforts to discover over-arching rules that supersede variability. Here, we define pan-cancer binary classes based on distinct expression of YAP and YAP-responsive adhesion regulators. Combining informatics with in vivo and in vitro gain- and loss-of-function studies across multiple murine and human tumor types, we show that opposite pro- or anti-cancer YAP activity functionally defines binary YAPon or YAPoff cancer classes that express or silence YAP, respectively. YAPoff solid cancers are neural/neuroendocrine and frequently RB1-/-, such as retinoblastoma, small cell lung cancer, and neuroendocrine prostate cancer. YAP silencing is intrinsic to the cell of origin, or acquired with lineage switching and drug resistance. The binary cancer groups exhibit distinct YAP-dependent adhesive behavior and pharmaceutical vulnerabilities, underscoring clinical relevance. Mechanistically, distinct YAP/TEAD enhancers in YAPoff or YAPon cancers deploy anti-cancer integrin or pro-cancer proliferative programs, respectively. YAP is thus pivotal across cancer, but in opposite ways, with therapeutic implications.
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Affiliation(s)
- Joel D Pearson
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada; Department of Ophthalmology and Vision Science, University of Toronto, Toronto, ON M5T 3A9, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Katherine Huang
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Marek Pacal
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Sean R McCurdy
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Suying Lu
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Arthur Aubry
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada; Department of Ophthalmology and Vision Science, University of Toronto, Toronto, ON M5T 3A9, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Tao Yu
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Kristine M Wadosky
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Letian Zhang
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Tao Wang
- Department of Pathology and Molecular Medicine, Queen's University, Kingston, ON K7L 3N6, Canada
| | - Alex Gregorieff
- Department of Pathology, McGill University and Cancer Research Program, Research Institute of the McGill University Health Centre, Montreal, ON H4A 3J1, Canada
| | - Mohammad Ahmad
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada
| | - Helen Dimaras
- Department of Ophthalmology and Vision Science, University of Toronto, Toronto, ON M5T 3A9, Canada; The Department of Ophthalmology & Vision Sciences, Child Health Evaluative Sciences Program, and Center for Global Child Health, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada; Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada; Division of Clinical Public Health, Dalla Lana School of Public Health, The University of Toronto, Toronto, ON M5T 3M7, Canada
| | - Ellen Langille
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Susan P C Cole
- Division of Cancer Biology and Genetics, Queen's University Cancer Research Institute, Kingston, ON K7L 3N6, Canada
| | - Philippe P Monnier
- Department of Ophthalmology and Vision Science, University of Toronto, Toronto, ON M5T 3A9, Canada; Krembil Research Institute, Vision Division, Krembil Discovery Tower, Toronto, ON M5T 2S8, Canada; Department of Physiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Benjamin H Lok
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada; Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2M9, Canada; Department of Radiation Oncology, University of Toronto, Toronto, ON M5T 1P5, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada
| | - Ming-Sound Tsao
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada; Princess Margaret Cancer Centre, University Health Network, Toronto, ON M5G 2M9, Canada; Department of Medical Biophysics, University of Toronto, Toronto, ON M5G 1L7, Canada
| | - Nagako Akeno
- Division of Pathology & Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA
| | - Daniel Schramek
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Kathryn A Wikenheiser-Brokamp
- Division of Pathology & Laboratory Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA; The Perinatal Institute Division of Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA; Department of Pathology & Laboratory Medicine, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Erik S Knudsen
- Department of Molecular and Cellular Biology, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Agnieszka K Witkiewicz
- Department of Cancer Genetics and Genomics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Jeffrey L Wrana
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - David W Goodrich
- Department of Pharmacology & Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY 14263, USA
| | - Rod Bremner
- Lunenfeld Tanenbaum Research Institute, Mt Sinai Hospital, Sinai Health System, Toronto, ON M5G 1X5, Canada; Department of Ophthalmology and Vision Science, University of Toronto, Toronto, ON M5T 3A9, Canada; Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada; Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada.
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28
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Lolo FN, Jiménez-Jiménez V, Sánchez-Álvarez M, Del Pozo MÁ. Tumor-stroma biomechanical crosstalk: a perspective on the role of caveolin-1 in tumor progression. Cancer Metastasis Rev 2021; 39:485-503. [PMID: 32514892 DOI: 10.1007/s10555-020-09900-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Tumor stiffening is a hallmark of malignancy that actively drives tumor progression and aggressiveness. Recent research has shed light onto several molecular underpinnings of this biomechanical process, which has a reciprocal crosstalk between tumor cells, stromal fibroblasts, and extracellular matrix remodeling at its core. This dynamic communication shapes the tumor microenvironment; significantly determines disease features including therapeutic resistance, relapse, or metastasis; and potentially holds the key for novel antitumor strategies. Caveolae and their components emerge as integrators of different aspects of cell function, mechanotransduction, and ECM-cell interaction. Here, we review our current knowledge on the several pivotal roles of the essential caveolar component caveolin-1 in this multidirectional biomechanical crosstalk and highlight standing questions in the field.
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Affiliation(s)
- Fidel Nicolás Lolo
- Mechanoadaptation and Caveolae Biology Lab, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Víctor Jiménez-Jiménez
- Mechanoadaptation and Caveolae Biology Lab, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Miguel Sánchez-Álvarez
- Mechanoadaptation and Caveolae Biology Lab, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain
| | - Miguel Ángel Del Pozo
- Mechanoadaptation and Caveolae Biology Lab, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Madrid, Spain.
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Hall-Roberts H, Agarwal D, Obst J, Smith TB, Monzón-Sandoval J, Di Daniel E, Webber C, James WS, Mead E, Davis JB, Cowley SA. TREM2 Alzheimer's variant R47H causes similar transcriptional dysregulation to knockout, yet only subtle functional phenotypes in human iPSC-derived macrophages. Alzheimers Res Ther 2020; 12:151. [PMID: 33198789 PMCID: PMC7667762 DOI: 10.1186/s13195-020-00709-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 10/20/2020] [Indexed: 01/21/2023]
Abstract
BACKGROUND TREM2 is a microglial cell surface receptor, with risk mutations linked to Alzheimer's disease (AD), including R47H. TREM2 signalling via SYK aids phagocytosis, chemotaxis, survival, and changes to microglial activation state. In AD mouse models, knockout (KO) of TREM2 impairs microglial clustering around amyloid and prevents microglial activation. The R47H mutation is proposed to reduce TREM2 ligand binding. We investigated cell phenotypes of the R47H mutant and TREM2 KO in a model of human microglia, and compared their transcriptional signatures, to determine the mechanism by which R47H TREM2 disrupts function. METHODS We generated human microglia-like iPSC-macrophages (pMac) from isogenic induced pluripotent stem cell (iPSC) lines, with homozygous R47H mutation or TREM2 knockout (KO). We firstly validated the effect of the R47H mutant on TREM2 surface and subcellular localization in pMac. To assess microglial phenotypic function, we measured phagocytosis of dead neurons, cell morphology, directed migration, survival, and LPS-induced inflammation. We performed bulk RNA-seq, comparing significant differentially expressed genes (DEGs; p < 0.05) between the R47H and KO versus WT, and bioinformatically predicted potential upstream regulators of TREM2-mediated gene expression. RESULTS R47H modified surface expression and shedding of TREM2, but did not impair TREM2-mediated signalling, or gross phenotypes that were dysregulated in the TREM2 KO (phagocytosis, motility, survival). However, altered gene expression in the R47H TREM2 pMac overlapped by 90% with the TREM2 KO and was characterised by dysregulation of genes involved with immunity, proliferation, activation, chemotaxis, and adhesion. Downregulated mediators of ECM adhesion included the vitronectin receptor αVβ3, and consequently, R47H TREM2 pMac adhered weakly to vitronectin compared with WT pMac. To counteract these transcriptional defects, we investigated TGFβ1, as a candidate upstream regulator. TGFβ1 failed to rescue vitronectin adhesion of pMac, although it improved αVβ3 expression. CONCLUSIONS The R47H mutation is not sufficient to cause gross phenotypic defects of human pMac under standard culture conditions. However, overlapping transcriptional defects with TREM2 KO supports the hypothesised partial loss-of-function effects of the R47H mutation. Furthermore, transcriptomics can guide us to more subtle phenotypic defects in the R47H cells, such as reduced cell adhesion, and can be used to predict targets for therapeutic intervention.
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Affiliation(s)
- Hazel Hall-Roberts
- James Martin Stem Cell Facility, Sir William Dunn School of Pathology, University of Oxford, Oxford, OX1 3RE UK
- Nuffield Department of Medicine Research Building, Alzheimer’s Research UK Oxford Drug Discovery Institute, University of Oxford, Oxford, OX3 7FZ UK
| | - Devika Agarwal
- Nuffield Department of Medicine Research Building, Alzheimer’s Research UK Oxford Drug Discovery Institute, University of Oxford, Oxford, OX3 7FZ UK
- Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, OX3 9DS UK
| | - Juliane Obst
- Nuffield Department of Medicine Research Building, Alzheimer’s Research UK Oxford Drug Discovery Institute, University of Oxford, Oxford, OX3 7FZ UK
| | - Thomas B. Smith
- Nuffield Department of Medicine Research Building, Alzheimer’s Research UK Oxford Drug Discovery Institute, University of Oxford, Oxford, OX3 7FZ UK
| | | | - Elena Di Daniel
- Nuffield Department of Medicine Research Building, Alzheimer’s Research UK Oxford Drug Discovery Institute, University of Oxford, Oxford, OX3 7FZ UK
| | - Caleb Webber
- UK Dementia Research Institute, Cardiff University, Cardiff, CF24 4HQ UK
| | - William S. James
- James Martin Stem Cell Facility, Sir William Dunn School of Pathology, University of Oxford, Oxford, OX1 3RE UK
| | - Emma Mead
- Nuffield Department of Medicine Research Building, Alzheimer’s Research UK Oxford Drug Discovery Institute, University of Oxford, Oxford, OX3 7FZ UK
| | - John B. Davis
- Nuffield Department of Medicine Research Building, Alzheimer’s Research UK Oxford Drug Discovery Institute, University of Oxford, Oxford, OX3 7FZ UK
| | - Sally A. Cowley
- James Martin Stem Cell Facility, Sir William Dunn School of Pathology, University of Oxford, Oxford, OX1 3RE UK
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30
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Baart VM, Houvast RD, de Geus-Oei LF, Quax PHA, Kuppen PJK, Vahrmeijer AL, Sier CFM. Molecular imaging of the urokinase plasminogen activator receptor: opportunities beyond cancer. EJNMMI Res 2020; 10:87. [PMID: 32725278 PMCID: PMC7387399 DOI: 10.1186/s13550-020-00673-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/14/2020] [Indexed: 02/07/2023] Open
Abstract
The urokinase plasminogen activator receptor (uPAR) plays a multifaceted role in almost any process where migration of cells and tissue-remodeling is involved such as inflammation, but also in diseases as arthritis and cancer. Normally, uPAR is absent in healthy tissues. By its carefully orchestrated interaction with the protease urokinase plasminogen activator and its inhibitor (plasminogen activator inhibitor-1), uPAR localizes a cascade of proteolytic activities, enabling (patho)physiologic cell migration. Moreover, via the interaction with a broad range of cell membrane proteins, like vitronectin and various integrins, uPAR plays a significant, but not yet completely understood, role in differentiation and proliferation of cells, affecting also disease progression. The implications of these processes, either for diagnostics or therapeutics, have received much attention in oncology, but only limited beyond. Nonetheless, the role of uPAR in different diseases provides ample opportunity to exploit new applications for targeting. Especially in the fields of oncology, cardiology, rheumatology, neurology, and infectious diseases, uPAR-targeted molecular imaging could offer insights for new directions in diagnosis, surveillance, or treatment options.
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Affiliation(s)
- V M Baart
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - R D Houvast
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - L F de Geus-Oei
- Department of Radiology, Section of Nuclear Medicine, Leiden University Medical Center, Leiden, The Netherlands.,Biomedical Photonic Imaging Group, University of Twente, Enschede, The Netherlands
| | - P H A Quax
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - P J K Kuppen
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - A L Vahrmeijer
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands
| | - C F M Sier
- Department of Surgery, Leiden University Medical Center, Albinusdreef 2, 2333 ZA, Leiden, The Netherlands. .,Percuros BV, Leiden, The Netherlands.
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31
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Chighizola M, Previdi A, Dini T, Piazzoni C, Lenardi C, Milani P, Schulte C, Podestà A. Adhesion force spectroscopy with nanostructured colloidal probes reveals nanotopography-dependent early mechanotransductive interactions at the cell membrane level. NANOSCALE 2020; 12:14708-14723. [PMID: 32618323 DOI: 10.1039/d0nr01991g] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Mechanosensing, the ability of cells to perceive and interpret the microenvironmental biophysical cues (such as the nanotopography), impacts strongly cellular behaviour through mechanotransductive processes and signalling. These events are predominantly mediated by integrins, the principal cellular adhesion receptors located at the cell/extracellular matrix (ECM) interface. Because of the typical piconewton force range and nanometre length scale of mechanotransductive interactions, achieving a detailed understanding of the spatiotemporal dynamics occurring at the cell/microenvironment interface is challenging; sophisticated interdisciplinary methodologies are required. Moreover, an accurate control over the nanotopographical features of the microenvironment is essential, in order to systematically investigate and precisely assess the influence of the different nanotopographical motifs on the mechanotransductive process. In this framework, we were able to study and quantify the impact of microenvironmental nanotopography on early cellular adhesion events by means of adhesion force spectroscopy based on innovative colloidal probes mimicking the nanotopography of natural ECMs. These probes provided the opportunity to detect nanotopography-specific modulations of the molecular clutch force loading dynamics and integrin clustering at the level of single binding events, in the critical time window of nascent adhesion formation. Following this approach, we found that the nanotopographical features are responsible for an excessive force loading in single adhesion sites after 20-60 s of interaction, causing a drop in the number of adhesion sites. However, by manganese treatment we demonstrated that the availability of activated integrins is a critical regulatory factor for these nanotopography-dependent dynamics.
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Affiliation(s)
- M Chighizola
- C.I.Ma.I.Na. and Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano, via Celoria 16, 20133 Milan, Italy.
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Talin1 regulates the endometrial epithelial cell adhesive capacity by interacting with LASP1 and Vitronectin. Reprod Biol 2020; 20:229-236. [PMID: 32113856 DOI: 10.1016/j.repbio.2020.02.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 01/27/2020] [Accepted: 02/14/2020] [Indexed: 01/13/2023]
Abstract
The endometrium is a highly complex tissue that is vulnerable to subtle gene expression changes and is the first point of contact for an implanting blastocyst. Talin1 has previously been identified to regulate cytoskeleton and cell motility, however it has not been investigated in association with infertility. Herein, we presented that Talin1 dysregulation in the missed abortion endometrium would negatively influence endometrial adhesive capacity. Mechanistically, intracellular Talin1 inhibited the nuclear transportation of LIM and SH3 protein 1 (LASP1) and restored the expression of adhesion-associated protein. Moreover, extracellular Talin1 enforces endometrial epithelial cell adhesive capacity by interacting with Vitronectin (VTN) and activating the FAK/Src/ERK signalling pathway. This finding provides a novel insight into the potential use of Talin1 for managing endometrial epithelia cell adhesion. This study represents the first demonstration of Talin1 function in endometrial epithelial cell adhesion and endometrial receptivity. Our findings indicate that re-expression of Talin1 might represent a useful strategy for preventing and treating early pregnancy failure and infertility.
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Chighizola M, Dini T, Lenardi C, Milani P, Podestà A, Schulte C. Mechanotransduction in neuronal cell development and functioning. Biophys Rev 2019; 11:701-720. [PMID: 31617079 PMCID: PMC6815321 DOI: 10.1007/s12551-019-00587-2] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 08/29/2019] [Indexed: 12/21/2022] Open
Abstract
Although many details remain still elusive, it became increasingly evident in recent years that mechanosensing of microenvironmental biophysical cues and subsequent mechanotransduction are strongly involved in the regulation of neuronal cell development and functioning. This review gives an overview about the current understanding of brain and neuronal cell mechanobiology and how it impacts on neurogenesis, neuronal migration, differentiation, and maturation. We will focus particularly on the events in the cell/microenvironment interface and the decisive extracellular matrix (ECM) parameters (i.e. rigidity and nanometric spatial organisation of adhesion sites) that modulate integrin adhesion complex-based mechanosensing and mechanotransductive signalling. It will also be outlined how biomaterial approaches mimicking essential ECM features help to understand these processes and how they can be used to control and guide neuronal cell behaviour by providing appropriate biophysical cues. In addition, principal biophysical methods will be highlighted that have been crucial for the study of neuronal mechanobiology.
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Affiliation(s)
- Matteo Chighizola
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics ``Aldo Pontremoli'', Università degli Studi di Milano, via Celoria 16, 20133, Milan, Italy
| | - Tania Dini
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics ``Aldo Pontremoli'', Università degli Studi di Milano, via Celoria 16, 20133, Milan, Italy
| | - Cristina Lenardi
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics ``Aldo Pontremoli'', Università degli Studi di Milano, via Celoria 16, 20133, Milan, Italy
| | - Paolo Milani
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics ``Aldo Pontremoli'', Università degli Studi di Milano, via Celoria 16, 20133, Milan, Italy
| | - Alessandro Podestà
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics ``Aldo Pontremoli'', Università degli Studi di Milano, via Celoria 16, 20133, Milan, Italy
| | - Carsten Schulte
- Interdisciplinary Centre for Nanostructured Materials and Interfaces (C.I.Ma.I.Na.) and Department of Physics ``Aldo Pontremoli'', Università degli Studi di Milano, via Celoria 16, 20133, Milan, Italy.
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The uPAR System as a Potential Therapeutic Target in the Diseased Eye. Cells 2019; 8:cells8080925. [PMID: 31426601 PMCID: PMC6721659 DOI: 10.3390/cells8080925] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/07/2019] [Accepted: 08/17/2019] [Indexed: 12/15/2022] Open
Abstract
Dysregulation of vascular networks is characteristic of eye diseases associated with retinal cell degeneration and visual loss. Visual impairment is also the consequence of photoreceptor degeneration in inherited eye diseases with a major inflammatory component, but without angiogenic profile. Among the pathways with high impact on vascular/degenerative diseases of the eye, a central role is played by a system formed by the ligand urokinase-type plasminogen activator (uPA) and its receptor uPAR. The uPAR system, although extensively investigated in tumors, still remains a key issue in vascular diseases of the eye and even less studied in inherited retinal pathologies such as retinitis pigmantosa (RP). Its spectrum of action has been extended far beyond a classical pro-angiogenic function and has emerged as a central actor in inflammation. Preclinical studies in more prevalent eye diseases characterized by neovascular formation, as in retinopathy of prematurity, wet macular degeneration and rubeosis iridis or vasopermeability excess as in diabetic retinopathy, suggest a critical role of increased uPAR signaling indicating the potentiality of its modulation to counteract neovessel formation and microvascular dysfunction. The additional observation that the uPAR system plays a major role in RP by limiting the inflammatory cascade triggered by rod degeneration rises further questions about its role in the diseased eye.
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Urokinase Receptor Regulates Adhesion of Progenitor Cardiac Cells to Vitronectin. Bull Exp Biol Med 2019; 167:315-319. [PMID: 31346863 DOI: 10.1007/s10517-019-04517-w] [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: 08/10/2018] [Indexed: 10/26/2022]
Abstract
Vitronectin, extracellular matrix protein, plays an important role in embryonic development and in organ and tissue reparation. A unique characteristic of vitronectin is specific binding of various biological molecules, including urokinase receptor (uPAR), extracellular matrix components, adhesion receptors, growth factors, thus supporting the modulation of cell behavior. Vitronectin is in fact not found in intact myocardium, while after infarction its level increases significantly, which correlates with accumulation of uPAR+ progenitor cardiac cells in the focus. The cells isolated from the heart of wild type mice are characterized by higher adhesion to vitronectin than progenitor cardiac cells from the myocardium of uPAR knockout mice. In addition, inhibition of urokinase receptor with specific antibodies on the surface of the progenitor cardiac cells of wild type mice leads to attenuation of their adhesive activity and flattening on vitronectin matrix, which can be important for their distribution in the postinfarction myocardium and realization of the reparative functions.
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Mani J, Neuschäfer J, Resch C, Rutz J, Maxeiner S, Roos F, Chun FKH, Juengel E, Blaheta RA. Amygdalin Modulates Prostate Cancer Cell Adhesion and Migration In Vitro. Nutr Cancer 2019; 72:528-537. [DOI: 10.1080/01635581.2019.1637442] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jens Mani
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
| | - Jens Neuschäfer
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
| | - Christian Resch
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
| | - Jochen Rutz
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
| | | | - Frederik Roos
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
| | - Felix K.-H. Chun
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
| | - Eva Juengel
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
| | - Roman A. Blaheta
- Department of Urology, Goethe-University, Frankfurt am Main, Germany
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Xanthis I, Souilhol C, Serbanovic-Canic J, Roddie H, Kalli AC, Fragiadaki M, Wong R, Shah DR, Askari JA, Canham L, Akhtar N, Feng S, Ridger V, Waltho J, Pinteaux E, Humphries MJ, Bryan MT, Evans PC. β1 integrin is a sensor of blood flow direction. J Cell Sci 2019; 132:jcs.229542. [PMID: 31076511 PMCID: PMC6589088 DOI: 10.1242/jcs.229542] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 04/13/2019] [Indexed: 12/26/2022] Open
Abstract
Endothelial cell (EC) sensing of fluid shear stress direction is a critical determinant of vascular health and disease. Unidirectional flow induces EC alignment and vascular homeostasis, whereas bidirectional flow has pathophysiological effects. ECs express several mechanoreceptors that respond to flow, but the mechanism for sensing shear stress direction is poorly understood. We determined, by using in vitro flow systems and magnetic tweezers, that β1 integrin is a key sensor of force direction because it is activated by unidirectional, but not bidirectional, shearing forces. β1 integrin activation by unidirectional force was amplified in ECs that were pre-sheared in the same direction, indicating that alignment and β1 integrin activity has a feedforward interaction, which is a hallmark of system stability. En face staining and EC-specific genetic deletion studies in the murine aorta revealed that β1 integrin is activated and is essential for EC alignment at sites of unidirectional flow but is not activated at sites of bidirectional flow. In summary, β1 integrin sensing of unidirectional force is a key mechanism for decoding blood flow mechanics to promote vascular homeostasis.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Ioannis Xanthis
- Department of Infection, Immunity and Cardiovascular Disease, INSIGNEO Institute for In Silico Medicine, and the Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
| | - Celine Souilhol
- Department of Infection, Immunity and Cardiovascular Disease, INSIGNEO Institute for In Silico Medicine, and the Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
| | - Jovana Serbanovic-Canic
- Department of Infection, Immunity and Cardiovascular Disease, INSIGNEO Institute for In Silico Medicine, and the Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
| | - Hannah Roddie
- Department of Infection, Immunity and Cardiovascular Disease, INSIGNEO Institute for In Silico Medicine, and the Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
| | - Antreas C Kalli
- Leeds Institute of Medical Research at St James's and Astbury Centre for Structural Molecular Biology, University of Leeds, Leeds LS2 9JT, UK
| | - Maria Fragiadaki
- Department of Infection, Immunity and Cardiovascular Disease, INSIGNEO Institute for In Silico Medicine, and the Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
| | - Raymond Wong
- Faculty of Biology, Medicine & Health, University of Manchester, Manchester M13 9PL, UK
| | - Dhruv R Shah
- Department of Infection, Immunity and Cardiovascular Disease, INSIGNEO Institute for In Silico Medicine, and the Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
| | - Janet A Askari
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Biology, Medicine & Health, University of Manchester, Manchester M13 9PL, UK
| | - Lindsay Canham
- Department of Infection, Immunity and Cardiovascular Disease, INSIGNEO Institute for In Silico Medicine, and the Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
| | - Nasreen Akhtar
- Department of Oncology and Metabolism, University of Sheffield, Sheffield S10 2TN, UK
| | - Shuang Feng
- Department of Infection, Immunity and Cardiovascular Disease, INSIGNEO Institute for In Silico Medicine, and the Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
| | - Victoria Ridger
- Department of Infection, Immunity and Cardiovascular Disease, INSIGNEO Institute for In Silico Medicine, and the Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
| | - Jonathan Waltho
- Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK
| | - Emmanuel Pinteaux
- Faculty of Biology, Medicine & Health, University of Manchester, Manchester M13 9PL, UK
| | - Martin J Humphries
- Wellcome Trust Centre for Cell-Matrix Research, Faculty of Biology, Medicine & Health, University of Manchester, Manchester M13 9PL, UK
| | - Matthew T Bryan
- Department of Infection, Immunity and Cardiovascular Disease, INSIGNEO Institute for In Silico Medicine, and the Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
| | - Paul C Evans
- Department of Infection, Immunity and Cardiovascular Disease, INSIGNEO Institute for In Silico Medicine, and the Bateson Centre, University of Sheffield, Sheffield S10 2TN, UK
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Liu M, Lin L, Høyer-Hansen G, Ploug M, Li H, Jiang L, Yuan C, Li J, Huang M. Crystal structure of the unoccupied murine urokinase-type plasminogen activator receptor (uPAR) reveals a tightly packed DII-DIII unit. FEBS Lett 2019; 593:1236-1247. [PMID: 31044429 DOI: 10.1002/1873-3468.13397] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/07/2019] [Accepted: 04/22/2019] [Indexed: 12/16/2022]
Abstract
The urokinase-type plasminogen activator receptor (uPAR) is a cell surface receptor that is capable of binding to a range of extracellular proteins and triggering a series of proteolytic and signaling events. Previous structural studies of uPAR with its ligands uPA and vitronectin revealed that its three domains (DI, DII, and DIII) form a large hydrophobic cavity to accommodate uPA. In the present study, the structure of unoccupied murine uPAR (muPAR) is determined. The structure of DII and DIII of muPAR is well defined and forms a compact globular unit, while DI could not be traced. Molecular dynamic simulations further confirm the rigid binding interface between DII and DIII. This study shows overall structural flexibility of uPAR in the absence of uPA.
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Affiliation(s)
- Min Liu
- College of Biological Science and Engineering, Fuzhou University, China.,College of Life Science, Fujian Normal University, Fuzhou, China
| | - Lin Lin
- Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - Gunilla Høyer-Hansen
- Biotechnology Research Innovation Centre (BRIC), University of Copenhagen, Denmark.,Finsen Laboratory, Rigshospitalet, Copenhagen, Denmark
| | - Michael Ploug
- Biotechnology Research Innovation Centre (BRIC), University of Copenhagen, Denmark.,Finsen Laboratory, Rigshospitalet, Copenhagen, Denmark
| | - Hanlin Li
- College of Chemistry, Fuzhou University, China
| | | | - Cai Yuan
- College of Biological Science and Engineering, Fuzhou University, China
| | - Jinyu Li
- College of Chemistry, Fuzhou University, China
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Leth JM, Mertens HDT, Leth-Espensen KZ, Jørgensen TJD, Ploug M. Did evolution create a flexible ligand-binding cavity in the urokinase receptor through deletion of a plesiotypic disulfide bond? J Biol Chem 2019; 294:7403-7418. [PMID: 30894413 DOI: 10.1074/jbc.ra119.007847] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/10/2019] [Indexed: 11/06/2022] Open
Abstract
The urokinase receptor (uPAR) is a founding member of a small protein family with multiple Ly6/uPAR (LU) domains. The motif defining these LU domains contains five plesiotypic disulfide bonds stabilizing its prototypical three-fingered fold having three protruding loops. Notwithstanding the detailed knowledge on structure-function relationships in uPAR, one puzzling enigma remains unexplored. Why does the first LU domain in uPAR (DI) lack one of its consensus disulfide bonds, when the absence of this particular disulfide bond impairs the correct folding of other single LU domain-containing proteins? Here, using a variety of contemporary biophysical methods, we found that reintroducing the two missing half-cystines in uPAR DI caused the spontaneous formation of the corresponding consensus 7-8 LU domain disulfide bond. Importantly, constraints due to this cross-link impaired (i) the binding of uPAR to its primary ligand urokinase and (ii) the flexible interdomain assembly of the three LU domains in uPAR. We conclude that the evolutionary deletion of this particular disulfide bond in uPAR DI may have enabled the assembly of a high-affinity urokinase-binding cavity involving all three LU domains in uPAR. Of note, an analogous neofunctionalization occurred in snake venom α-neurotoxins upon loss of another pair of the plesiotypic LU domain half-cystines. In summary, elimination of the 7-8 consensus disulfide bond in the first LU domain of uPAR did have significant functional and structural consequences.
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Affiliation(s)
- Julie M Leth
- From the Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen N, Denmark.,the Biotech Research and Innovation Centre (BRIC), University of Copenhagen, DK-2200 Copenhagen N, Denmark
| | - Haydyn D T Mertens
- the European Molecular Biology Laboratory Hamburg, Notkestrasse 85, D-22607 Hamburg, Germany, and
| | - Katrine Zinck Leth-Espensen
- From the Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen N, Denmark.,the Biotech Research and Innovation Centre (BRIC), University of Copenhagen, DK-2200 Copenhagen N, Denmark.,the Department of Biochemistry and Molecular Biology, University of Southern Denmark, DK-5320 Odense M, Denmark
| | - Thomas J D Jørgensen
- the Department of Biochemistry and Molecular Biology, University of Southern Denmark, DK-5320 Odense M, Denmark
| | - Michael Ploug
- From the Finsen Laboratory, Rigshospitalet, DK-2200 Copenhagen N, Denmark, .,the Biotech Research and Innovation Centre (BRIC), University of Copenhagen, DK-2200 Copenhagen N, Denmark
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40
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Diaz C, Neubauer S, Rechenmacher F, Kessler H, Missirlis D. Recruitment of integrin ανβ3 to integrin α5β1-induced clusters enables focal adhesion maturation and cell spreading. J Cell Sci 2019; 133:jcs.232702. [DOI: 10.1242/jcs.232702] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 11/25/2019] [Indexed: 12/17/2022] Open
Abstract
The major fibronectin (FN) binding integrins α5β1 and αvβ3 exhibit cooperativity during cell adhesion, migration and mechanosensing, through mechanisms that are not yet fully resolved. Exploiting mechanically-tunable, nano-patterned substrates, and peptidomimetic ligands designed to selectively bind corresponding integrins, we report that focal adhesions (FAs) of endothelial cells assembled on integrin α5β1-selective substrates, rapidly recruit αvβ3 integrins, but not vice versa. Blocking of integrin αvβ3 hindered FA maturation and cell spreading on α5β1-selective substrates, indicating a mechanism dependent on extracellular ligand binding and highlighting the requirement of αvβ3 engagement for efficient adhesion. Recruitment of αvβ3 integrins additionally occurred on hydrogel substrates of varying mechanical properties, above a threshold stiffness supporting FA formation. Mechanistic studies revealed the need for soluble factors present in serum to allow recruitment, and excluded exogenous, or endogenous, FN as the responsible ligand for integrin αvβ3 accumulation to adhesion clusters. Our findings highlight a novel mechanism of integrin co-operation and the critical role for αvβ3 integrins in promoting cell adhesion on α5β1-selective substrates.
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Affiliation(s)
- Carolina Diaz
- Department of Cellular Biophysics, Max Planck Institute for Medical Research; postal address: Jahnstr. 29, D-69120, Heidelberg, Germany
- Department of Biophysical Chemistry, Physical Chemistry Institute, Heidelberg University; postal address: INF 253, D-69120 Heidelberg, Germany
| | - Stefanie Neubauer
- Institute for Advanced Study and Center for Integrated Protein Science (CIPSM), Technische Universität München; postal address: Lichtenbergstr. 4, D-85747, Garching, Germany
| | - Florian Rechenmacher
- Institute for Advanced Study and Center for Integrated Protein Science (CIPSM), Technische Universität München; postal address: Lichtenbergstr. 4, D-85747, Garching, Germany
| | - Horst Kessler
- Institute for Advanced Study and Center for Integrated Protein Science (CIPSM), Technische Universität München; postal address: Lichtenbergstr. 4, D-85747, Garching, Germany
| | - Dimitris Missirlis
- Department of Cellular Biophysics, Max Planck Institute for Medical Research; postal address: Jahnstr. 29, D-69120, Heidelberg, Germany
- Department of Biophysical Chemistry, Physical Chemistry Institute, Heidelberg University; postal address: INF 253, D-69120 Heidelberg, Germany
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Jia C, Keasey MP, Malone HM, Lovins C, Sante RR, Razskazovskiy V, Hagg T. Vitronectin from brain pericytes promotes adult forebrain neurogenesis by stimulating CNTF. Exp Neurol 2018; 312:20-32. [PMID: 30408465 DOI: 10.1016/j.expneurol.2018.11.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 09/17/2018] [Accepted: 11/05/2018] [Indexed: 12/18/2022]
Abstract
Vitronectin (VTN) is a glycoprotein in the blood and affects hemostasis. VTN is also present in the extracellular matrix of various organs but little is known about its function in healthy adult tissues. We show, in adult mice, that VTN is uniquely expressed by approximately half of the pericytes of subventricular zone (SVZ) where neurogenesis continues throughout life. Intracerebral VTN antibody injection or VTN knockout reduced neurogenesis as well as expression of pro-neurogenic CNTF, and anti-neurogenic LIF and IL-6. Conversely, injections of VTN, or plasma from VTN+/+, but not VTN-/- mice, increased these cytokines. VTN promoted SVZ neurogenesis when LIF and IL-6 were suppressed by co-administration of a gp130 inhibitor. Unexpectedly, VTN inhibited FAK signaling and VTN-/- mice had increased FAK signaling in the SVZ. Further, an FAK inhibitor or VTN increased CNTF expression, but not in conditional astrocytic FAK knockout mice, suggesting that VTN increases CNTF through FAK inhibition in astrocytes. These results identify a novel role of pericyte-derived VTN in the brain, where it regulates SVZ neurogenesis through co-expression of CNTF, LIF and IL-6. VTN-integrin-FAK and gp130 signaling may provide novel targets to induce neurogenesis for cell replacement therapies.
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Affiliation(s)
- Cuihong Jia
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Matthew P Keasey
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Hannah M Malone
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Chiharu Lovins
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Richard R Sante
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Vlad Razskazovskiy
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
| | - Theo Hagg
- Department of Biomedical Sciences, Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA.
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42
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Galluzzi M, Schulte C, Milani P, Podestà A. Imidazolium-Based Ionic Liquids Affect Morphology and Rigidity of Living Cells: An Atomic Force Microscopy Study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:12452-12462. [PMID: 30213187 DOI: 10.1021/acs.langmuir.8b01554] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The study of the toxicity, biocompatibility, and environmental sustainability of room-temperature ionic liquids (ILs) is still in its infancy. Understanding the impact of ILs on living organisms, especially from the aquatic ecosystem, is urgent, since large amounts of these substances are starting to be employed as solvents in industrial chemical processes, and on the other side, evidence of toxic effects of ILs on microorganisms and single cells have been observed. To date, the toxicity of ILs has been investigated by means of macroscopic assays aimed at characterizing the effective concentrations (like the EC50) that cause the death of a significant fraction of the population of microorganisms and cells. These studies allow us to identify the cell membrane as the first target of the IL interaction, whose effectiveness was correlated to the lipophilicity of the cation, i.e., to the length of the lateral alkyl chain. Our study aimed at investigating the molecular mechanisms underpinning the interaction of ILs with living cells. To this purpose, we carried out a combined topographic and mechanical analysis by atomic force microscopy of living breast metastatic cancer cells (MDA-MB-231) upon interaction with imidazolium-based ILs. We showed that ILs are able to induce modifications of the overall rigidity (effective Young's modulus) and morphology of the cells. Our results demonstrate that ILs act on the physical properties of the outer cell layer (the membrane linked to the actin cytoskeleton), already at concentrations below the EC50. These potentially toxic effects are stronger at higher IL concentrations, as well as with longer lateral chains in the cation.
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Affiliation(s)
- Massimiliano Galluzzi
- Shenzhen Key Laboratory of Nanobiomechanics , Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055 , Guangdong , China
- C.I.Ma.I.Na and Dipartimento di Fisica "Aldo Pontremoli" , Università degli Studi di Milano , via Celoria 16 , 20133 Milano , Italy
| | - Carsten Schulte
- C.I.Ma.I.Na and Dipartimento di Fisica "Aldo Pontremoli" , Università degli Studi di Milano , via Celoria 16 , 20133 Milano , Italy
| | - Paolo Milani
- C.I.Ma.I.Na and Dipartimento di Fisica "Aldo Pontremoli" , Università degli Studi di Milano , via Celoria 16 , 20133 Milano , Italy
| | - Alessandro Podestà
- C.I.Ma.I.Na and Dipartimento di Fisica "Aldo Pontremoli" , Università degli Studi di Milano , via Celoria 16 , 20133 Milano , Italy
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Ojalill M, Parikainen M, Rappu P, Aalto E, Jokinen J, Virtanen N, Siljamäki E, Heino J. Integrin α2β1 decelerates proliferation, but promotes survival and invasion of prostate cancer cells. Oncotarget 2018; 9:32435-32447. [PMID: 30197754 PMCID: PMC6126696 DOI: 10.18632/oncotarget.25945] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 07/21/2018] [Indexed: 01/03/2023] Open
Abstract
High expression level of integrin α2β1 is a hallmark of prostate cancer stem cell like cells. The role of this collagen receptor is controversial since it is down regulated in poorly differentiated carcinomas, but concomitantly proposed to promote metastasis. Here, we show that docetaxel resistant DU145 prostate cancer cells express high levels of α2β1 and that α2β1High subpopulation of DU145 cells proliferates slower than the cells representing α2β1Low subpopulation. To further study this initial observation we used Crispr/Cas9 technology to create an α2β1 negative DU145 cell line. Furthermore, we performed rescue experiment by transfecting α2 knockout cells with vector carrying α2 cDNA or with an empty vector for appropriate control. When these two cell lines were compared, α2β1 positive cells proliferated slower, were more resistant to docetaxel and also migrated more effectively on collagen and invaded faster through matrigel or collagen. Integrin α2β1 was demonstrated to be a positive regulator of p38 MAPK phosphorylation and a selective p38 inhibitor (SB203580) promoted proliferation and inhibited invasion. Effects of α2β1 integrin on the global gene expression pattern of DU145 cells in spheroid cultures were studied by RNA sequencing. Integrin α2β1 was shown to regulate several cancer progression related genes, most notably matrix metalloproteinase-1 (MMP-1), a recognized invasion promoting protein. To conclude, the fact that α2β1 decelerates cell proliferation may explain the dominance of α2β1 negative/low cells in primary sites of poorly differentiated carcinomas, while the critical role of α2β1 integrin in invasion stresses the importance of this adhesion receptor in cancer dissemination.
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Affiliation(s)
| | | | - Pekka Rappu
- Department of Biochemistry, University of Turku, Turku, Finland
| | - Elina Aalto
- Department of Biochemistry, University of Turku, Turku, Finland
| | - Johanna Jokinen
- Department of Biochemistry, University of Turku, Turku, Finland
| | - Noora Virtanen
- Department of Biochemistry, University of Turku, Turku, Finland
| | - Elina Siljamäki
- Department of Biochemistry, University of Turku, Turku, Finland
| | - Jyrki Heino
- Department of Biochemistry, University of Turku, Turku, Finland
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44
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Pagani G, Gohlke H. On the contributing role of the transmembrane domain for subunit-specific sensitivity of integrin activation. Sci Rep 2018; 8:5733. [PMID: 29636500 PMCID: PMC5893634 DOI: 10.1038/s41598-018-23778-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 03/20/2018] [Indexed: 12/20/2022] Open
Abstract
Integrins are α/β heterodimeric transmembrane adhesion receptors. Evidence exists that their transmembrane domain (TMD) separates upon activation. Subunit-specific differences in activation sensitivity of integrins were reported. However, whether sequence variations in the TMD lead to differential TMD association has remained elusive. Here, we show by molecular dynamics simulations and association free energy calculations on TMDs of integrin αIIbβ3, αvβ3, and α5β1 that αIIbβ3 TMD is most stably associated; this difference is related to interaction differences across the TMDs. The order of TMD association stability is paralleled by the basal activity of these integrins, which suggests that TMD differences can have a decisive effect on integrin conformational free energies. We also identified a specific order of clasp disintegration upon TMD dissociation, which suggests that the closed state of integrins may comprise several microstates. Our results provide unprecedented insights into a possibly contributing role of TMD towards subunit-specific sensitivity of integrin activation.
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Affiliation(s)
- Giulia Pagani
- Institute of Pharmaceutical and Medicinal Chemistry, Heinrich-Heine-Universität Düsseldorf, 40225, Düsseldorf, Germany
| | - Holger Gohlke
- Institute of Pharmaceutical and Medicinal Chemistry, Heinrich-Heine-Universität Düsseldorf, 40225, Düsseldorf, Germany.
- John von Neumann Institute for Computing (NIC), Jülich Supercomputing Centre (JSC) & Institute for Complex Systems - Structural Biochemistry (ICS 6), Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.
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Schuliga M, Grainge C, Westall G, Knight D. The fibrogenic actions of the coagulant and plasminogen activation systems in pulmonary fibrosis. Int J Biochem Cell Biol 2018; 97:108-117. [PMID: 29474926 DOI: 10.1016/j.biocel.2018.02.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 02/16/2018] [Accepted: 02/19/2018] [Indexed: 12/27/2022]
Abstract
Fibrosis causes irreversible damage to lung structure and function in restrictive lung diseases such as idiopathic pulmonary fibrosis (IPF). Extravascular coagulation involving fibrin formation in the intra-alveolar compartment is postulated to have a pivotal role in the development of pulmonary fibrosis, serving as a provisional matrix for migrating fibroblasts. Furthermore, proteases of the coagulation and plasminogen activation (plasminergic) systems that form and breakdown fibrin respectively directly contribute to pulmonary fibrosis. The coagulants, thrombin and factor Xa (FXa) evoke fibrogenic effects via cleavage of the N-terminus of protease-activated receptors (PARs). Whilst the formation and activity of plasmin, the principle plasminergic mediator is suppressed in the airspaces of patients with IPF, localized increases are likely to occur in the lung interstitium. Plasmin-evoked proteolytic activation of factor XII (FXII), matrix metalloproteases (MMPs) and latent, matrix-bound growth factors such as epidermal growth factor (EGF) indirectly implicate plasmin in pulmonary fibrosis. Another plasminergic protease, urokinase plasminogen activator (uPA) is associated with regions of fibrosis in the remodelled lung of IPF patients and elicits fibrogenic activity via binding its receptor (uPAR). Plasminogen activator inhibitor-1 (PAI-1) formed in the injured alveolar epithelium also contributes to pulmonary fibrosis in a manner that involves vitronectin binding. This review describes the mechanisms by which components of the two systems primarily involved in fibrin homeostasis contribute to interstitial fibrosis, with a particular focus on IPF. Selectively targeting the receptor-mediated mechanisms of coagulant and plasminergic proteases may limit pulmonary fibrosis, without the bleeding complications associated with conventional anti-coagulant and thrombolytic therapies.
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Affiliation(s)
- Michael Schuliga
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia; Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia.
| | - Christopher Grainge
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia; School of Medicine and Public Health, University of Newcastle, Callaghan, New South Wales, Australia
| | - Glen Westall
- Allergy, Immunology and Respiratory Medicine, Alfred Hospital, Prahran, Victoria, Australia
| | - Darryl Knight
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, New South Wales, Australia; Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia; Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Canada
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46
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Gauthier NC, Roca-Cusachs P. Mechanosensing at integrin-mediated cell–matrix adhesions: from molecular to integrated mechanisms. Curr Opin Cell Biol 2018; 50:20-26. [DOI: 10.1016/j.ceb.2017.12.014] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 12/22/2017] [Indexed: 12/21/2022]
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47
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Annis MG, Ouellet V, Rennhack JP, L'Esperance S, Rancourt C, Mes-Masson AM, Andrechek ER, Siegel PM. Integrin-uPAR signaling leads to FRA-1 phosphorylation and enhanced breast cancer invasion. Breast Cancer Res 2018; 20:9. [PMID: 29382358 PMCID: PMC5791353 DOI: 10.1186/s13058-018-0936-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Accepted: 01/15/2018] [Indexed: 12/15/2022] Open
Abstract
Background The Fos-related antigen 1 (FRA-1) transcription factor promotes tumor cell growth, invasion and metastasis. Phosphorylation of FRA-1 increases protein stability and function. We identify a novel signaling axis that leads to increased phosphorylation of FRA-1, increased extracellular matrix (ECM)-induced breast cancer cell invasion and is prognostic of poor outcome in patients with breast cancer. Methods While characterizing five breast cancer cell lines derived from primary human breast tumors, we identified BRC-31 as a novel basal-like cell model that expresses elevated FRA-1 levels. We interrogated the functional contribution of FRA-1 and an upstream signaling axis in breast cancer cell invasion. We extended this analysis to determine the prognostic significance of this signaling axis in samples derived from patients with breast cancer. Results BRC-31 cells display elevated focal adhesion kinase (FAK), SRC and extracellular signal-regulated (ERK2) phosphorylation relative to luminal breast cancer models. Inhibition of this signaling axis, with pharmacological inhibitors, reduces the phosphorylation and stabilization of FRA-1. Elevated integrin αVβ3 and uPAR expression in these cells suggested that integrin receptors might activate this FAK-SRC-ERK2 signaling. Transient knockdown of urokinase/plasminogen activator urokinase receptor (uPAR) in basal-like breast cancer cells grown on vitronectin reduces FRA-1 phosphorylation and stabilization; and uPAR and FRA-1 are required for vitronectin-induced cell invasion. In clinical samples, a molecular component signature consisting of vitronectin-uPAR-uPA-FRA-1 predicts poor overall survival in patients with breast cancer and correlates with an FRA-1 transcriptional signature. Conclusions We have identified a novel signaling axis that leads to phosphorylation and enhanced activity of FRA-1, a transcription factor that is emerging as an important modulator of breast cancer progression and metastasis. Electronic supplementary material The online version of this article (10.1186/s13058-018-0936-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Matthew G Annis
- Goodman Cancer Research Centre, McGill University, Montréal, Québec, Canada.,Departments of Medicine, McGill University, Montréal, Québec, Canada
| | - Veronique Ouellet
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM) and Institut du cancer de Montréal, Montreal, Canada
| | - Jonathan P Rennhack
- Department of Physiology, Michigan State University, East Lansing, Michigan, USA
| | - Sylvain L'Esperance
- Département de Microbiologie et Infectiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Canada
| | - Claudine Rancourt
- Département de Microbiologie et Infectiologie, Faculté de Médecine et des Sciences de la Santé, Université de Sherbrooke, Sherbrooke, Canada
| | - Anne-Marie Mes-Masson
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM) and Institut du cancer de Montréal, Montreal, Canada
| | - Eran R Andrechek
- Department of Physiology, Michigan State University, East Lansing, Michigan, USA
| | - Peter M Siegel
- Goodman Cancer Research Centre, McGill University, Montréal, Québec, Canada. .,Departments of Biochemistry, McGill University, Montréal, Québec, Canada. .,Departments of Medicine, McGill University, Montréal, Québec, Canada. .,Departments of Anatomy and Cell Biology, McGill University, Montréal, Québec, Canada.
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48
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van Veen M, Matas-Rico E, van de Wetering K, Leyton-Puig D, Kedziora KM, De Lorenzi V, Stijf-Bultsma Y, van den Broek B, Jalink K, Sidenius N, Perrakis A, Moolenaar WH. Negative regulation of urokinase receptor activity by a GPI-specific phospholipase C in breast cancer cells. eLife 2017; 6. [PMID: 28849762 PMCID: PMC5576486 DOI: 10.7554/elife.23649] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Accepted: 07/28/2017] [Indexed: 12/21/2022] Open
Abstract
The urokinase receptor (uPAR) is a glycosylphosphatidylinositol (GPI)-anchored protein that promotes tissue remodeling, tumor cell adhesion, migration and invasion. uPAR mediates degradation of the extracellular matrix through protease recruitment and enhances cell adhesion, migration and signaling through vitronectin binding and interactions with integrins. Full-length uPAR is released from the cell surface, but the mechanism and significance of uPAR shedding remain obscure. Here we identify transmembrane glycerophosphodiesterase GDE3 as a GPI-specific phospholipase C that cleaves and releases uPAR with consequent loss of function, whereas its homologue GDE2 fails to attack uPAR. GDE3 overexpression depletes uPAR from distinct basolateral membrane domains in breast cancer cells, resulting in a less transformed phenotype, it slows tumor growth in a xenograft model and correlates with prolonged survival in patients. Our results establish GDE3 as a negative regulator of the uPAR signaling network and, furthermore, highlight GPI-anchor hydrolysis as a cell-intrinsic mechanism to alter cell behavior. Every process in the body, from how cells divide to how they move around, is tightly regulated. For example, cells only migrate when they receive the correct signals from their environment. These signals are recognised by receptor proteins that sit on the cell surface and connect the outside signal with the cell’s response. However, in cancer cells, these processes are out of control, which is why cancer cells can grow very quickly or spread to many different parts of the body. One important receptor protein is the urokinase receptor, which helps to reorganize the tissue, for example, when wounds heal, but also enables cancer cells to grow and spread. A special feature of urokinase receptor is the way it is connected to the cell surface, namely through a molecule that acts as an anchor, called the GPI anchor. The urokinase receptor and some other GPI-anchored proteins can be released from their anchor. However, until now it was not clear why and how the urokinase receptor is released from cells, or how losing the receptor affects the cell. Now, van Veen, Matas-Rico et al. studied breast cancer cells, and discovered that an enzyme called GDE3 cuts the urokinase receptor off its GPI anchor to release the receptor from the cells. However, when breast cancer cells shed the urokinase receptor, they also lost the receptor from the cell surface in specific areas. As a result, the receptor could not work anymore. When breast cancer cells were experimentally modified to produce high levels of GDE3, the cancer cells became less mobile and aggressive. Van Veen, Matas-Rico et al. then implanted ‘normal’ breast cancer cells, and breast cancer cells with extra GDE3 into mice, and observed that the tumors of mice with additional GDE3 grew less quickly. Moreover, breast cancer patients with high levels of GDE3 tend to live longer than patients with low levels of GDE3. These results suggest that the enzyme GDE3 can suppress tumor growth. These findings uncover a new way how cells can alter their behavior, namely by cleaving GPI anchors at the cell surface. Future experiments will need to address how GDE3 itself is controlled, and if it releases other GPI-anchored proteins from cells. Once we know how to increase GDE3 activity in tumor cells, the new knowledge could one day lead to therapies to help patients with cancer.
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Affiliation(s)
- Michiel van Veen
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Elisa Matas-Rico
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Koen van de Wetering
- Division of Molecular Oncology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Daniela Leyton-Puig
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Katarzyna M Kedziora
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | | | - Yvette Stijf-Bultsma
- Division of Biochemistry, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Bram van den Broek
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Kees Jalink
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | | | - Anastassis Perrakis
- Division of Biochemistry, The Netherlands Cancer Institute, Amsterdam, Netherlands
| | - Wouter H Moolenaar
- Division of Cell Biology, The Netherlands Cancer Institute, Amsterdam, Netherlands
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49
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Integrin α2β1 in nonactivated conformation can induce focal adhesion kinase signaling. Sci Rep 2017; 7:3414. [PMID: 28611383 PMCID: PMC5469853 DOI: 10.1038/s41598-017-03640-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 05/02/2017] [Indexed: 12/22/2022] Open
Abstract
Conformational activation of integrins is generally required for ligand binding and cellular signalling. However, we have previously reported that the nonactivated conformation of α2β1 integrin can also bind to large ligands, such as human echovirus 1. In this study, we show that the interaction between the nonactivated integrin and a ligand resulted in the activation of focal adhesion kinase (FAK) in a protein kinase C dependent manner. A loss-of-function mutation, α2E336A, in the α2-integrin did not prevent the activation of FAK, nor did EDTA-mediated inactivation of the integrin. Full FAK activation was observed, since phosphorylation was not only confirmed in residue Y397, but also in residues Y576/7. Furthermore, initiation of downstream signaling by paxillin phosphorylation in residue Y118 was evident, even though this activation was transient by nature, probably due to the lack of talin involvement in FAK activation and the absence of vinculin in the adhesion complexes formed by the nonactivated integrins. Altogether these results indicate that the nonactivated integrins can induce cellular signaling, but the outcome of the signaling differs from conventional integrin signaling.
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50
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