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Chakrabarti A, Bansal R, Mondal A, Upadhyay P, Gupta A, Verma P, Garg S, Pati S, Singh S. Epithelial homelessness: an atypical form of anoikis triggered by Leishmania interaction with epithelial cells. Future Microbiol 2024; 19:33-49. [PMID: 37830931 DOI: 10.2217/fmb-2023-0004] [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: 01/05/2023] [Accepted: 08/25/2023] [Indexed: 10/14/2023] Open
Abstract
Aim: Leishmaniasis is characterized by a spectrum of diseases with two main clinical forms, cutaneous and visceral, caused by Leishmania tropica and Leishmania donovani, respectively. Studying Leishmania's interaction with the epithelial barrier at the initial site of a bite is crucial to understanding the establishment of the disease. Materials & methods: To discern parasite-host epithelial interaction, we developed in vitro cellular models involving co-cultures of Leishmania and MDCK epithelial cells. Results: Both L. donovani-MDCK and L. tropica-MDCK co-culture models demonstrated a phenomenon known as atypical anoikis apoptosis, typically identified by distinctive 'flipping in' of cell membranes and disordered cytoskeletal frameworks. Conclusion: This study bridges the gap in the fundamental understanding of the intricate latticework involving vector-Leishmania-host and may inform drug development strategies.
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Affiliation(s)
- Amrita Chakrabarti
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Uttar Pradesh, 201314, India
| | - Ruby Bansal
- Special Center for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Abir Mondal
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Uttar Pradesh, 201314, India
| | - Prince Upadhyay
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Uttar Pradesh, 201314, India
| | - Aashima Gupta
- Special Center for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Pritee Verma
- Special Center for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Swati Garg
- Special Center for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Soumya Pati
- Department of Life Sciences, School of Natural Sciences, Shiv Nadar University, Uttar Pradesh, 201314, India
| | - Shailja Singh
- Special Center for Molecular Medicine, Jawaharlal Nehru University, New Delhi, 110067, India
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2
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Novel fibrin-fibronectin matrix accelerates mice skin wound healing. Bioact Mater 2020; 5:949-962. [PMID: 32671290 PMCID: PMC7334397 DOI: 10.1016/j.bioactmat.2020.06.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/22/2020] [Accepted: 06/22/2020] [Indexed: 01/13/2023] Open
Abstract
Plasma fibrinogen (F1) and fibronectin (pFN) polymerize to form a fibrin clot that is both a hemostatic and provisional matrix for wound healing. About 90% of plasma F1 has a homodimeric pair of γ chains (γγF1), and 10% has a heterodimeric pair of γ and more acidic γ' chains (γγ'F1). We have synthesized a novel fibrin matrix exclusively from a 1:1 (molar ratio) complex of γγ'F1 and pFN in the presence of highly active thrombin and recombinant Factor XIII (rFXIIIa). In this matrix, the fibrin nanofibers were decorated with pFN nanoclusters (termed γγ'F1:pFN fibrin). In contrast, fibrin made from 1:1 mixture of γγF1 and pFN formed a sporadic distribution of "pFN droplets" (termed γγF1+pFN fibrin). The γγ'F1:pFN fibrin enhanced the adhesion of primary human umbilical vein endothelium cells (HUVECs) relative to the γγF1+FN fibrin. Three dimensional (3D) culturing showed that the γγ'F1:pFN complex fibrin matrix enhanced the proliferation of both HUVECs and primary human fibroblasts. HUVECs in the 3D γγ'F1:pFN fibrin exhibited a starkly enhanced vascular morphogenesis while an apoptotic growth profile was observed in the γγF1+pFN fibrin. Relative to γγF1+pFN fibrin, mouse dermal wounds that were sealed by γγ'F1:pFN fibrin exhibited accelerated and enhanced healing. This study suggests that a 3D pFN presentation on a fibrin matrix promotes wound healing.
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3
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Bordeleau F, Wang W, Simmons A, Antonyak MA, Cerione RA, Reinhart-King CA. Tissue transglutaminase 2 regulates tumor cell tensional homeostasis by increasing contractility. J Cell Sci 2020; 133:jcs.231134. [PMID: 31822629 DOI: 10.1242/jcs.231134] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Accepted: 12/01/2019] [Indexed: 12/21/2022] Open
Abstract
Abnormal tensional cellular homeostasis is now considered a hallmark of cancer. Despite this, the origin of this abnormality remains unclear. In this work, we investigated the role of tissue transglutaminase 2 (TG2, also known as TGM2), a protein associated with poor prognosis and increased metastatic potential, and its relationship to the EGF receptor in the regulation of the mechanical state of tumor cells. Remarkably, we observed a TG2-mediated modulation of focal adhesion composition as well as stiffness-induced FAK activation, which was linked with a distinctive increase in cell contractility, in experiments using both pharmacological and shRNA-based approaches. Additionally, the increased contractility could be reproduced in non-malignant cells upon TG2 expression. Moreover, the increased cell contractility mediated by TG2 was largely due to the loss of EGFR-mediated inhibition of cell contractility. These findings establish intracellular TG2 as a regulator of cellular tensional homeostasis and suggest the existence of signaling switches that control the contribution of growth factor receptors in determining the mechanical state of a cell.
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Affiliation(s)
- Francois Bordeleau
- CHU de Québec-Université Laval Research Center (Oncology division), Université Laval Cancer Research Center and Faculty of Medecine, Université Laval, Québec G1R 3S3, Canada .,Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37212, USA
| | - Wenjun Wang
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37212, USA
| | - Alysha Simmons
- Pathobiology Graduate Program, Brown University, Providence, RI 02912, USA
| | - Marc A Antonyak
- Department of Biomedical Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Richard A Cerione
- Department of Biomedical Sciences, Cornell University, Ithaca, NY 14853, USA
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4
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Jedrusik N, Steinberg T, Husari A, Volk L, Wang X, Finkenzeller G, Strassburg S, Tomakidi P. Gelatin nonwovens-based epithelial morphogenesis involves a signaling axis comprising EGF-receptor, MAP kinases ERK 1/2, and β1 integrin. J Biomed Mater Res A 2018; 107:663-677. [PMID: 30474276 DOI: 10.1002/jbm.a.36585] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 11/06/2018] [Accepted: 11/20/2018] [Indexed: 12/27/2022]
Abstract
In biomaterials research, biomechanics which support tissue regeneration steadily gains of importance. Hence, we have previously shown that gelatin-based electrospun nonwoven mats (NWMs) with a distinct modulus of elasticity (3.2 kPa) promotes epithelial morphogenesis. Since molecular mechanisms of this morphogenesis are still unknown, the present study aims at identifying molecules, involved herein. Epithelia established on the NMWs showed persistence of the activated state of the epidermal growth factor receptor (EGF-R), phosphorylated at the src-specific tyrosine 845 (EGF-RT845 ) throughout the observation period of 10 days. To elucidate whether the observed morphogenesis mechanistically involves EGF-R signaling, we inhibited EGF-R, by employing the EGF-RT845 specific inhibitor Gefitinib (IRESSA®). Gefitinib administration yielded a reduced expression of the β1 integrin subunit, a well-known cell-matrix interaction receptor, concomitant with downregulation of p42/44 ERK1/2 MAP-kinase activity. To elucidate whether the observed downregulation of β1 is EGF-RT845 -dependent or emerging from ERK1/2 signaling, we exposed epithelia, grown on the NWMs, with the ERK1/2-directed inhibitor U0126. In the absence of Gefitinib, inhibition of p42/44 MAP-kinase activity resulted in decreased β1 integrin protein levels, thus indicating that β1 expression is dependent on ERK1/2 and not EGF-RT845 . Our results showed the first time that an EGF-R-β1 integrin-signaling axis, including ERK1/2, promotes NWM-elasticity-based epithelial morphogenesis. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 107A: 663-677, 2019.
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Affiliation(s)
- Nicole Jedrusik
- Division of Oral Biotechnology, Center for Dental Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany.,Faculty of Engineering, University of Freiburg, Georges-Köhler-Allee 101, 79110, Freiburg, Germany
| | - Thorsten Steinberg
- Division of Oral Biotechnology, Center for Dental Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Ayman Husari
- Division of Oral Biotechnology, Center for Dental Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany.,Faculty of Engineering, University of Freiburg, Georges-Köhler-Allee 101, 79110, Freiburg, Germany
| | - Lukas Volk
- Division of Oral Biotechnology, Center for Dental Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany.,Faculty of Biology, University of Freiburg, Schaenzlestr. 1, 79104, Freiburg, Germany
| | - Xiaoling Wang
- Division of Oral Biotechnology, Center for Dental Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Günter Finkenzeller
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Sandra Strassburg
- Department of Plastic and Hand Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
| | - Pascal Tomakidi
- Division of Oral Biotechnology, Center for Dental Medicine, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetterstr. 55, 79106, Freiburg, Germany
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5
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Peláez R, Morales X, Salvo E, Garasa S, Ortiz de Solórzano C, Martínez A, Larrayoz IM, Rouzaut A. β3 integrin expression is required for invadopodia-mediated ECM degradation in lung carcinoma cells. PLoS One 2017; 12:e0181579. [PMID: 28767724 PMCID: PMC5540285 DOI: 10.1371/journal.pone.0181579] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 07/03/2017] [Indexed: 01/17/2023] Open
Abstract
Cancer related deaths are primarily due to tumor metastasis. To facilitate their dissemination to distant sites, cancer cells develop invadopodia, actin-rich protrusions capable of degrading the surrounding extracellular matrix (ECM). We aimed to determine whether β3 integrin participates in invadopodia formed by lung carcinoma cells, based on our previous findings of specific TGF-β induction of β3 integrin dependent metastasis in animal models of lung carcinoma. In this study, we demonstrate that lung carcinoma cells form invadopodia in response to TGF-β exposure. Invadopodia formation and degradation activity is dependent on β3 integrin expression since β3 integrin deficient cells are not able to degrade gelatin-coated surfaces. Even more, transient over-expression of SRC did not restore invadopodia formation in β3 integrin deficient cells. Finally, we observed that blockade of PLC-dependent signaling leads to more intense labeling for β3 integrin in invadopodia. Our results suggest that β3 integrin function, and location, in lung cancer cells are essential for invadopodia formation, and this integrin regulates the activation of different signal pathways necessary for the invasive structure. β3 integrin has been associated with poor prognosis and increased metastasis in several carcinoma types, including lung cancer. Our findings provide new evidence to support the use of targeted therapies against this integrin to combat the onset of metastases.
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Affiliation(s)
- Rafael Peláez
- Department of Oncology, Center for Applied Medical Research CIMA, Pamplona, Spain.,Biomarkers and Molecular Signaling Group, Neurodegenerative Diseases Area, Center for Biomedical Research of La Rioja, CIBIR, Logroño, Spain
| | - Xabier Morales
- Department of Oncology, Center for Applied Medical Research CIMA, Pamplona, Spain.,Laboratory of Preclinical Models and Analytical Tools, Division of Solid Tumors and Biomarkers, Center for Applied Medical Research and CIBERONC, Pamplona, Navarra, Spain
| | - Elizabeth Salvo
- Department of Oncology, Center for Applied Medical Research CIMA, Pamplona, Spain
| | - Saray Garasa
- Department of Oncology, Center for Applied Medical Research CIMA, Pamplona, Spain.,Department of Immunology and Immunotherapy, CIMA, Pamplona, Navarra, Spain
| | - Carlos Ortiz de Solórzano
- Laboratory of Preclinical Models and Analytical Tools, Division of Solid Tumors and Biomarkers, Center for Applied Medical Research and CIBERONC, Pamplona, Navarra, Spain
| | - Alfredo Martínez
- Oncology Area, Center for Biomedical Research of La Rioja, CIBIR, Logroño, Spain
| | - Ignacio M Larrayoz
- Biomarkers and Molecular Signaling Group, Neurodegenerative Diseases Area, Center for Biomedical Research of La Rioja, CIBIR, Logroño, Spain
| | - Ana Rouzaut
- Department of Oncology, Center for Applied Medical Research CIMA, Pamplona, Spain.,Department of Immunology and Immunotherapy, CIMA, Pamplona, Navarra, Spain.,Department of Biochemistry and Genetics, University of Navarra, Pamplona, Spain
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Saxena M, Liu S, Yang B, Hajal C, Changede R, Hu J, Wolfenson H, Hone J, Sheetz MP. EGFR and HER2 activate rigidity sensing only on rigid matrices. NATURE MATERIALS 2017; 16:775-781. [PMID: 28459445 PMCID: PMC5920513 DOI: 10.1038/nmat4893] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 03/20/2017] [Indexed: 05/20/2023]
Abstract
Epidermal growth factor receptor (EGFR) interacts with integrins during cell spreading and motility, but little is known about the role of EGFR in these mechanosensing processes. Here we show, using two different cell lines, that in serum- and EGF-free conditions, EGFR or HER2 activity increase spreading and rigidity-sensing contractions on rigid, but not soft, substrates. Contractions peak after 15-20 min, but diminish by tenfold after 4 h. Addition of EGF at that point increases spreading and contractions, but this can be blocked by myosin-II inhibition. We further show that EGFR and HER2 are activated through phosphorylation by Src family kinases (SFK). On soft surfaces, neither EGFR inhibition nor EGF stimulation have any effect on cell motility. Thus, EGFR or HER2 can catalyse rigidity sensing after associating with nascent adhesions under rigidity-dependent tension downstream of SFK activity. This has broad implications for the roles of EGFR and HER2 in the absence of EGF both for normal and cancerous growth.
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Affiliation(s)
- Mayur Saxena
- Department of Biomedical Engineering, Columbia University, New York, New York 10027, USA
| | - Shuaimin Liu
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, USA
| | - Bo Yang
- Mechanobiology Institute, National University of Singapore, Singapore 117411, Singapore
| | - Cynthia Hajal
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, USA
| | - Rishita Changede
- Mechanobiology Institute, National University of Singapore, Singapore 117411, Singapore
| | - Junqiang Hu
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, USA
| | - Haguy Wolfenson
- Department of Biological Sciences, Columbia University, New York, New York 10027, USA
- Department of Genetics and Developmental Biology, The Ruth and Bruce Rappaport Faculty of Medicine, The Technion-Israel Institute of Technology, Haifa 31096, Israel
| | - James Hone
- Department of Mechanical Engineering, Columbia University, New York, New York 10027, USA
| | - Michael P Sheetz
- Mechanobiology Institute, National University of Singapore, Singapore 117411, Singapore
- Department of Biological Sciences, Columbia University, New York, New York 10027, USA
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Omachi K, Miyakita R, Fukuda R, Kai Y, Suico MA, Yokota T, Kamura M, Shuto T, Kai H. Long-term treatment with EGFR inhibitor erlotinib attenuates renal inflammatory cytokines but not nephropathy in Alport syndrome mouse model. Clin Exp Nephrol 2017; 21:952-960. [DOI: 10.1007/s10157-017-1386-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Accepted: 01/19/2017] [Indexed: 10/20/2022]
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8
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Oudin MJ, Miller MA, Klazen JAZ, Kosciuk T, Lussiez A, Hughes SK, Tadros J, Bear JE, Lauffenburger DA, Gertler FB. MenaINV mediates synergistic cross-talk between signaling pathways driving chemotaxis and haptotaxis. Mol Biol Cell 2016; 27:3085-3094. [PMID: 27559126 PMCID: PMC5063616 DOI: 10.1091/mbc.e16-04-0212] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 08/12/2016] [Indexed: 12/13/2022] Open
Abstract
Directed cell migration, a key process in metastasis, arises from the combined influence of multiple processes, including chemotaxis-the directional movement of cells to soluble cues-and haptotaxis-the migration of cells on gradients of substrate-bound factors. However, it is unclear how chemotactic and haptotactic pathways integrate with each other to drive overall cell behavior. MenaINV has been implicated in metastasis by driving chemotaxis via dysregulation of phosphatase PTP1B and more recently in haptotaxis via interaction with integrin α5β1. Here we find that MenaINV-driven haptotaxis on fibronectin (FN) gradients requires intact signaling between α5β1 integrin and the epidermal growth factor receptor (EGFR), which is influenced by PTP1B. Furthermore, we show that MenaINV-driven haptotaxis and ECM reorganization both require the Rab-coupling protein RCP, which mediates α5β1 and EGFR recycling. Finally, MenaINV promotes synergistic migratory response to combined EGF and FN in vitro and in vivo, leading to hyperinvasive phenotypes. Together our data demonstrate that MenaINV is a shared component of multiple prometastatic pathways that amplifies their combined effects, promoting synergistic cross-talk between RTKs and integrins.
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Affiliation(s)
- Madeleine J Oudin
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142
| | - Miles A Miller
- Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139 Center for Systems Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114
| | - Joelle A Z Klazen
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142
| | - Tatsiana Kosciuk
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142
| | - Alisha Lussiez
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142
| | - Shannon K Hughes
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142 Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Jenny Tadros
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142
| | - James E Bear
- Lineberger Comprehensive Cancer Center, University of North Carolina Chapel Hill, Chapel Hill, NC 27514
| | - Douglas A Lauffenburger
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142 Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Frank B Gertler
- David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142 Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139
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9
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Kim TW, Ryu HH, Li SY, Li CH, Lim SH, Jang WY, Jung S. PDIA6 regulation of ADAM17 shedding activity and EGFR-mediated migration and invasion of glioblastoma cells. J Neurosurg 2016; 126:1829-1838. [DOI: 10.3171/2016.5.jns152831] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVEIn patients with glioblastoma, local invasion of tumor cells causes recurrence and shortens survival. The goal of this study was to determine whether protein disulfide isomerase (PDI) A6 regulates migration and invasion of glioblastoma cells and the associated factors.METHODSU87MG cells were treated with either PDIA6 or ADAM17 small interfering RNA (siRNA) fragments or with both types of siRNA fragments, and expression was confirmed by reverse transcription–polymerase chain reaction and Western blot. Migration and invasion were assessed using a wound-healing assay, a Matrigel assay, and an organotypic culture system. After the U87MG cells were treated with siRNAs and epidermal growth factor receptor (EGFR) inhibitors, the expression of matrix metalloproteinase–2 (MMP-2), membrane Type 1-matrix metalloproteinase (MT1-MMP), integrin, phosphorylated focal adhesion kinase (pFAK), and phosphorylated EGFR (pEGFR) was detected by Western blotting and zymography.RESULTSU87MG cell migration and invasion increased significantly after inhibition of PDIA6. The MMP-2 activation ratio and ADAM17 activity (as a sheddase of the proligand) increased, and expression of pEGFR, pFAK, integrin α5β3, and MT1-MMP was induced, compared with control levels. Furthermore, heparin-binding epidermal growth factor (EGFR signaling ligand) was highly expressed in PDIA6-knockdown cells. After siPDIA6-transfected U87MG cells were treated with EGFR signaling inhibitors, expression of pFAK, MMP-2, and MT1-MMP decreased and invasion decreased significantly. Simultaneous double-knockdown of PDIA6 and ADAM17 reduced pEGFR and pFAK expression, compared with control levels.CONCLUSIONSThe authors propose that inhibiting PDIA6 could transduce EGFR signaling by activating and inducing ADAM17 during migration and invasion of U87MG glioblastoma cells. The results of this study suggest that PDIA6 is an important component of EGFR-mediated migration and invasion of U87MG cells. This is the first report of the effects of PDIA6 on migration and invasion in glioblastoma.
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Affiliation(s)
- Tae-Wan Kim
- 1Department of Neurosurgery, Brain Tumor Clinic and Gamma Knife Center, and
| | - Hyang-Hwa Ryu
- 2Brain Tumor Research Laboratory, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Republic of Korea
| | - Song-Yuan Li
- 2Brain Tumor Research Laboratory, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Republic of Korea
| | - Chun-Hao Li
- 2Brain Tumor Research Laboratory, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Republic of Korea
| | - Sa-Hoe Lim
- 1Department of Neurosurgery, Brain Tumor Clinic and Gamma Knife Center, and
- 2Brain Tumor Research Laboratory, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Republic of Korea
| | - Woo-Youl Jang
- 1Department of Neurosurgery, Brain Tumor Clinic and Gamma Knife Center, and
| | - Shin Jung
- 1Department of Neurosurgery, Brain Tumor Clinic and Gamma Knife Center, and
- 2Brain Tumor Research Laboratory, Chonnam National University Research Institute of Medical Sciences, Chonnam National University Medical School and Hwasun Hospital, Hwasun, Republic of Korea
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10
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Eberwein P, Laird D, Schulz S, Reinhard T, Steinberg T, Tomakidi P. Modulation of focal adhesion constituents and their down-stream events by EGF: On the cross-talk of integrins and growth factor receptors. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2015; 1853:2183-98. [DOI: 10.1016/j.bbamcr.2015.06.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Revised: 05/27/2015] [Accepted: 06/12/2015] [Indexed: 02/06/2023]
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11
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Li Q, Wilkie AR, Weller M, Liu X, Cohen JI. THY-1 Cell Surface Antigen (CD90) Has an Important Role in the Initial Stage of Human Cytomegalovirus Infection. PLoS Pathog 2015; 11:e1004999. [PMID: 26147640 PMCID: PMC4492587 DOI: 10.1371/journal.ppat.1004999] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 06/03/2015] [Indexed: 01/01/2023] Open
Abstract
Human cytomegalovirus (HCMV) infects about 50% of the US population, is the leading infectious cause of birth defects, and is considered the most important infectious agent in transplant recipients. The virus infects many cell types in vivo and in vitro. While previous studies have identified several cellular proteins that may function at early steps of infection in a cell type dependent manner, the mechanism of virus entry is still poorly understood. Using a computational biology approach, correlating gene expression with virus infectivity in 54 cell lines, we identified THY-1 as a putative host determinant for HCMV infection in these cells. With a series of loss-of-function, gain-of-function and protein-protein interaction analyses, we found that THY-1 mediates HCMV infection at the entry step and is important for infection that occurs at a low m.o.i. THY-1 antibody that bound to the cell surface blocked HCMV during the initial 60 minutes of infection in a dose-dependent manner. Down-regulation of THY-1 with siRNA impaired infectivity occurred during the initial 60 minutes of inoculation. Both THY-1 antibody and siRNA inhibited HCMV-induced activation of the PI3-K/Akt pathway required for entry. Soluble THY-1 protein blocked HCMV infection during, but not after, virus internalization. Expression of exogenous THY-1 enhanced entry in cells expressing low levels of the protein. THY-1 interacted with HCMV gB and gH and may form a complex important for entry. However, since gB and gH have previously been shown to interact, it is uncertain if THY-1 directly binds to both of these proteins. Prior observations that THY-1 (a) interacts with αVβ3 integrin and recruits paxillin (implicated in HCMV entry), (b) regulates leukocyte extravasation (critical for HCMV viremia), and (c) is expressed on many cells targeted for HCMV infection including epithelial and endothelial cells, fibroblast, and CD34+/CD38- stem cells, all support a role for THY-1 as an HCMV entry mediator in a cell type dependent manner. THY-1 may function through a complex setting, that would include viral gB and gH, and other cellular factors, thus links virus entry with signaling in host cells that ultimately leads to virus infection.
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Affiliation(s)
- Qingxue Li
- Medical Virology Section, Laboratory of Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Adrian R. Wilkie
- Medical Virology Section, Laboratory of Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Melodie Weller
- Secretory Physiology Section, Molecular Physiology and Therapeutics Branch, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Xueqiao Liu
- Medical Virology Section, Laboratory of Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Jeffrey I. Cohen
- Medical Virology Section, Laboratory of Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail:
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Zhu J, Clark RAF. Fibronectin at select sites binds multiple growth factors and enhances their activity: expansion of the collaborative ECM-GF paradigm. J Invest Dermatol 2014; 134:895-901. [PMID: 24335899 PMCID: PMC3961531 DOI: 10.1038/jid.2013.484] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Revised: 10/10/2013] [Accepted: 10/25/2013] [Indexed: 01/23/2023]
Abstract
Intensive research has demonstrated that extracellular matrix (ECM) molecules and growth factors (GF) collaborate at many different levels. The ability of ECM to modulate GF signals has important implications in tissue formation and homeostasis as well as novel therapies for acute and chronic wounds. Recently, a number of GF-binding sites was identified in fibronectin (FN) and was shown to provide another layer of regulation on GF signaling. Here, we review these new findings on FN interaction with GF in the context of general ways ECM molecules regulate GF signaling.
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Affiliation(s)
- Jia Zhu
- Department of Biochemistry, Stony Brook University, Stony Brook, New York, USA
| | - Richard A F Clark
- Department of Biomedical Engineering, Stony Brook University, Stony Brook, New York, USA; Department of Dermatology, Stony Brook University, Stony Brook, New York, USA; Department of Medicine, Stony Brook University, Stony Brook, New York, USA.
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Cellular functions regulated by phosphorylation of EGFR on Tyr845. Int J Mol Sci 2013; 14:10761-90. [PMID: 23702846 PMCID: PMC3709701 DOI: 10.3390/ijms140610761] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Revised: 05/06/2013] [Accepted: 05/13/2013] [Indexed: 11/17/2022] Open
Abstract
The Src gene product (Src) and the epidermal growth factor receptor (EGFR) are prototypes of oncogene products and function primarily as a cytoplasmic non-receptor tyrosine kinase and a transmembrane receptor tyrosine kinase, respectively. The identification of Src and EGFR, and the subsequent extensive investigations of these proteins have long provided cutting edge research in cancer and other molecular and cellular biological studies. In 1995, we reported that the human epidermoid carcinoma cells, A431, contain a small fraction of Src and EGFR in which these two kinase were in physical association with each other, and that Src phosphorylates EGFR on tyrosine 845 (Y845) in the Src-EGFR complex. Y845 of EGFR is located in the activation segment of the kinase domain, where many protein kinases contain kinase-activating autophosphorylation sites (e.g., cAMP-dependent protein kinase, Src family kinases, transmembrane receptor type tyrosine kinases) or trans-phosphorylation sites (e.g., cyclin-dependent protein kinase, mitogen-activated protein kinase, Akt protein kinase). A number of studies have demonstrated that Y845 phosphorylation serves an important role in cancer as well as normal cells. Here we compile the experimental facts involving Src phosphorylation of EGFR on Y845, by which cell proliferation, cell cycle control, mitochondrial regulation of cell metabolism, gamete activation and other cellular functions are regulated. We also discuss the physiological relevance, as well as structural insights of the Y845 phosphorylation.
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Melnick M, Sedghizadeh PP, Deluca KA, Jaskoll T. Cytomegalovirus-induced salivary gland pathology: resistance to kinase inhibitors of the upregulated host cell EGFR/ERK pathway is associated with CMV-dependent stromal overexpression of IL-6 and fibronectin. HERPESVIRIDAE 2013; 4:1. [PMID: 23342981 PMCID: PMC3602079 DOI: 10.1186/2042-4280-4-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Accepted: 12/28/2012] [Indexed: 11/10/2022]
Abstract
Background Recently we identified a relationship between human cytomegalovirus (hCMV) and human salivary gland (SG) mucoepidermoid carcinoma (MEC) in over 90% of cases; tumorigenesis in these cases uniformly correlated with active hCMV protein expression and an upregulation of the EGFR → ERK pathway. Our previously characterized, novel mouse organ culture model of mouse CMV (mCMV)-induced tumorigenesis displays a number of histologic and molecular characteristics similar to human MEC. Methods Newborn mouse submandibular glands (SMGs) were incubated with 1 × 105 PFU/ml of lacZ-tagged mCMV RM427+ on day 0 for 24 hours and then cultured in virus-free media for a total of 6 or 12 days with or without EGFR/ERK inhibitors and/or aciclovir. SMGs were collected for histology, immunolocalization (pERK, FN, IL-6), viral distribution, or Western blot analysis (pERK). Results Here we report: (1) mouse SMG tumors soon exhibit an acquired resistance to EGFR/ERK pathway kinase inhibitors, alone or in combination; (2) long term tumor regression can only be sustained by concurrent inhibitor and antiviral treatment; (3) CMV-dependent, kinase inhibitor resistance is associated with overexpression of fibronectin and IL-6 proteins in abnormal stromal cells. Conclusions Acquired resistance to kinase inhibitors is dependent upon CMV dysregulation of alternative pathways with downstream effectors common with the targeted pathway, a phenomenon with important therapeutic implications for human MEC of salivary glands.
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Affiliation(s)
- Michael Melnick
- Laboratory for Developmental Genetics, University of Southern California, 925 W 34th Street, MC-0641, Los Angeles, CA 90089-0641, USA.
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