1
|
Pastorino GA, Sheraj I, Huebner K, Ferrero G, Kunze P, Hartmann A, Hampel C, Husnugil HH, Maiuthed A, Gebhart F, Schlattmann F, Gulec Taskiran AE, Oral G, Palmisano R, Pardini B, Naccarati A, Erlenbach-Wuensch K, Banerjee S, Schneider-Stock R. A partial epithelial-mesenchymal transition signature for highly aggressive colorectal cancer cells that survive under nutrient restriction. J Pathol 2024; 262:347-361. [PMID: 38235615 DOI: 10.1002/path.6240] [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: 06/17/2023] [Revised: 10/12/2023] [Accepted: 11/21/2023] [Indexed: 01/19/2024]
Abstract
Partial epithelial-mesenchymal transition (p-EMT) has recently been identified as a hybrid state consisting of cells with both epithelial and mesenchymal characteristics and is associated with the migration, metastasis, and chemoresistance of cancer cells. Here, we describe the induction of p-EMT in starved colorectal cancer (CRC) cells and identify a p-EMT gene signature that can predict prognosis. Functional characterisation of starvation-induced p-EMT in HCT116, DLD1, and HT29 cells showed changes in proliferation, morphology, and drug sensitivity, supported by in vivo studies using the chorioallantoic membrane model. An EMT-specific quantitative polymerase chain reaction (qPCR) array was used to screen for deregulated genes, leading to the establishment of an in silico gene signature that was correlated with poor disease-free survival in CRC patients along with the CRC consensus molecular subtype CMS4. Among the significantly deregulated p-EMT genes, a triple-gene signature consisting of SERPINE1, SOX10, and epidermal growth factor receptor (EGFR) was identified. Starvation-induced p-EMT was characterised by increased migratory potential and chemoresistance, as well as E-cadherin processing and internalisation. Both gene signature and E-cadherin alterations could be reversed by the proteasomal inhibitor MG132. Spatially resolving EGFR expression with high-resolution immunofluorescence imaging identified a proliferation stop in starved CRC cells caused by EGFR internalisation. In conclusion, we have gained insight into a previously undiscovered EMT mechanism that may become relevant when tumour cells are under nutrient stress, as seen in early stages of metastasis. Targeting this process of tumour cell dissemination might help to prevent EMT and overcome drug resistance. © 2024 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
Collapse
Affiliation(s)
- Gil A Pastorino
- Institute of Pathology, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Ilir Sheraj
- Department of Biological Sciences, Orta Dogu Teknik Universitesi, Ankara, Turkey
| | - Kerstin Huebner
- Institute of Pathology, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Giulio Ferrero
- Department of Clinical and Biological Sciences, University of Turin, Turin, Italy
| | - Philipp Kunze
- Institute of Pathology, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Arndt Hartmann
- Institute of Pathology, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Chuanpit Hampel
- Institute of Pathology, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | | | - Arnatchai Maiuthed
- Department of Pharmacology, Mahidol University, Bangkok, Thailand
- Centre of Biopharmaceutical Science for Healthy Ageing, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
| | - Florian Gebhart
- Institute of Pathology, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Fynn Schlattmann
- Institute of Pathology, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Aliye Ezgi Gulec Taskiran
- Department of Biological Sciences, Orta Dogu Teknik Universitesi, Ankara, Turkey
- Department of Molecular Biology and Genetics, Baskent University, Ankara, Turkey
| | - Goksu Oral
- Department of Biological Sciences, Orta Dogu Teknik Universitesi, Ankara, Turkey
| | - Ralph Palmisano
- Optical Imaging Competence Centre FAU OICE, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Barbara Pardini
- Italian Institute for Genomic Medicine (IIGM), c/o FPO-IRCCS Candiolo, Turin, Italy
- Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | - Alessio Naccarati
- Italian Institute for Genomic Medicine (IIGM), c/o FPO-IRCCS Candiolo, Turin, Italy
- Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | - Katharina Erlenbach-Wuensch
- Institute of Pathology, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Sreeparna Banerjee
- Department of Biological Sciences, Orta Dogu Teknik Universitesi, Ankara, Turkey
- Cancer Systems Biology Laboratory (CanSyl), Orta Dogu Teknik Universitesi, Ankara, Turkey
| | - Regine Schneider-Stock
- Institute of Pathology, Universitätsklinikum Erlangen, Friedrich-Alexander Universität Erlangen-Nürnberg, Erlangen, Germany
| |
Collapse
|
2
|
Carlin CR. Role of EGF Receptor Regulatory Networks in the Host Response to Viral Infections. Front Cell Infect Microbiol 2022; 11:820355. [PMID: 35083168 PMCID: PMC8785968 DOI: 10.3389/fcimb.2021.820355] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 12/17/2021] [Indexed: 12/13/2022] Open
Abstract
In this review article, we will first provide a brief overview of EGF receptor (EGFR) structure and function, and its importance as a therapeutic target in epithelial carcinomas. We will then compare what is currently known about canonical EGFR trafficking pathways that are triggered by ligand binding, versus ligand-independent pathways activated by a variety of intrinsic and environmentally induced cellular stresses. Next, we will review the literature regarding the role of EGFR as a host factor with critical roles facilitating viral cell entry and replication. Here we will focus on pathogens exploiting virus-encoded and endogenous EGFR ligands, as well as EGFR-mediated trafficking and signaling pathways that have been co-opted by wild-type viruses and recombinant gene therapy vectors. We will also provide an overview of a recently discovered pathway regulating non-canonical EGFR trafficking and signaling that may be a common feature of viruses like human adenoviruses which signal through p38-mitogen activated protein kinase. We will conclude by discussing the emerging role of EGFR signaling in innate immunity to viral infections, and how viral evasion mechanisms are contributing to our understanding of fundamental EGFR biology.
Collapse
Affiliation(s)
- Cathleen R. Carlin
- Department of Molecular Biology and Microbiology, School of Medicine, Case Western Reserve University, Cleveland, OH, United States,Case Comprehensive Cancer Center, School of Medicine, Case Western Reserve University, Cleveland, OH, United States,*Correspondence: Cathleen R. Carlin,
| |
Collapse
|
3
|
Abstract
PURPOSE OF REVIEW The aim of this study was to summarize recent findings about the role of the epidermal growth factor receptor (EGFR) in acute kidney injury and in progression of chronic kidney injury. RECENT FINDINGS There is increasing evidence that EGFR activation occurs as a response to either ischemic or toxic kidney injury and EGFR signalling plays an important role in recovery of epithelial integrity. However, with incomplete recovery or in conditions predisposing to progressive glomerular and tubulointerstitial injury, aberrant persistent EGFR signalling is a causal mediator of progressive fibrotic injury. New studies have implicated activation of HIPPO/YAP signalling as a component of EGFR's actions in the kidney. There is also new evidence for sex disparities in kidney EGFR expression and activation after injury, with a male predominance that is mediated by androgens. SUMMARY There is increasing evidence for an important role for EGFR signalling in mediation of kidney injury, raising the possibility that interruption of the signalling cascade could limit progression of development of progressive kidney fibrosis.
Collapse
Affiliation(s)
- Raymond C Harris
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt Center for Kidney Disease, Vanderbilt University School of Medicine
- Department of Veterans Affairs, Nashville, Tennessee, USA
| |
Collapse
|
4
|
Parker MI, Nikonova AS, Sun D, Golemis EA. Proliferative signaling by ERBB proteins and RAF/MEK/ERK effectors in polycystic kidney disease. Cell Signal 2019; 67:109497. [PMID: 31830556 DOI: 10.1016/j.cellsig.2019.109497] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Revised: 12/05/2019] [Accepted: 12/06/2019] [Indexed: 12/24/2022]
Abstract
A primary pathological feature of polycystic kidney disease (PKD) is the hyperproliferation of epithelial cells in renal tubules, resulting in formation of fluid-filled cysts. The proliferative aspects of the two major forms of PKD-autosomal dominant PKD (ADPKD), which arises from mutations in the polycystins PKD1 and PKD2, and autosomal recessive PKD (ARPKD), which arises from mutations in PKHD1-has encouraged investigation into protein components of the core cell proliferative machinery as potential drivers of PKD pathogenesis. In this review, we examine the role of signaling by ERBB proteins and their effectors, with a primary focus on ADPKD. The ERBB family of receptor tyrosine kinases (EGFR/ERBB1, HER2/ERBB2, ERBB3, and ERBB4) are activated by extracellular ligands, inducing multiple pro-growth signaling cascades; among these, activation of signaling through the RAS GTPase, and the RAF, MEK1/2, and ERK1/2 kinases enhance cell proliferation and restrict apoptosis during renal tubuloepithelial cyst formation. Characteristics of PKD include overexpression and mislocalization of the ERBB receptors and ligands, leading to enhanced activation and increased activity of downstream signaling proteins. The altered regulation of ERBBs and their effectors in PKD is influenced by enhanced activity of SRC kinase, which is promoted by the loss of cytoplasmic Ca2+ and an increase in cAMP-dependent PKA kinase activity that stimulates CFTR, driving the secretory phenotype of ADPKD. We discuss the interplay between ERBB/SRC signaling, and polycystins and their depending signaling, with emphasis on thes changes that affect cell proliferation in cyst expansion, as well as the inflammation-associated fibrogenesis, which characterizes progressive disease. We summarize the current progress of preclinical and clinical trials directed at inhibiting this signaling axis, and discuss potential future strategies that may be productive for controlling PKD.
Collapse
Affiliation(s)
- Mitchell I Parker
- Program in Molecular Therapeutics, Fox Chase Cancer Center, 19111, USA; Molecular & Cell Biology & Genetics (MCBG) Program, Drexel University College of Medicine, 19102, USA
| | - Anna S Nikonova
- Program in Molecular Therapeutics, Fox Chase Cancer Center, 19111, USA
| | - Danlin Sun
- Program in Molecular Therapeutics, Fox Chase Cancer Center, 19111, USA; Institute of Life Science, Jiangsu University, Jingkou District, Zhenjiang, Jiangsu 212013, China
| | - Erica A Golemis
- Program in Molecular Therapeutics, Fox Chase Cancer Center, 19111, USA.
| |
Collapse
|
5
|
Nandagopal N, Santat LA, Elowitz MB. Cis-activation in the Notch signaling pathway. eLife 2019; 8:37880. [PMID: 30628888 PMCID: PMC6345567 DOI: 10.7554/elife.37880] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 01/09/2019] [Indexed: 12/31/2022] Open
Abstract
The Notch signaling pathway consists of transmembrane ligands and receptors that can interact both within the same cell (cis) and across cell boundaries (trans). Previous work has shown that cis-interactions act to inhibit productive signaling. Here, by analyzing Notch activation in single cells while controlling cell density and ligand expression level, we show that cis-ligands can also activate Notch receptors. This cis-activation process resembles trans-activation in its ligand level dependence, susceptibility to cis-inhibition, and sensitivity to Fringe modification. Cis-activation occurred for multiple ligand-receptor pairs, in diverse cell types, and affected survival in neural stem cells. Finally, mathematical modeling shows how cis-activation could potentially expand the capabilities of Notch signaling, for example enabling ‘negative’ (repressive) signaling. These results establish cis-activation as an additional mode of signaling in the Notch pathway, and should contribute to a more complete understanding of how Notch signaling functions in developmental, physiological, and biomedical contexts.
Collapse
Affiliation(s)
- Nagarajan Nandagopal
- Division of Biology and Biological Engineering, California Institute of Technology, Howard Hughes Medical Institute, Pasadena, United States
| | - Leah A Santat
- Division of Biology and Biological Engineering, California Institute of Technology, Howard Hughes Medical Institute, Pasadena, United States
| | - Michael B Elowitz
- Division of Biology and Biological Engineering, California Institute of Technology, Howard Hughes Medical Institute, Pasadena, United States
| |
Collapse
|
6
|
Role of Epidermal Growth Factor Receptor (EGFR) and Its Ligands in Kidney Inflammation and Damage. Mediators Inflamm 2018; 2018:8739473. [PMID: 30670929 PMCID: PMC6323488 DOI: 10.1155/2018/8739473] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 10/29/2018] [Accepted: 11/07/2018] [Indexed: 12/29/2022] Open
Abstract
Chronic kidney disease (CKD) is characterized by persistent inflammation and progressive fibrosis, ultimately leading to end-stage renal disease. Although many studies have investigated the factors involved in the progressive deterioration of renal function, current therapeutic strategies only delay disease progression, leaving an unmet need for effective therapeutic interventions that target the cause behind the inflammatory process and could slow down or reverse the development and progression of CKD. Epidermal growth factor receptor (EGFR) (ERBB1), a membrane tyrosine kinase receptor expressed in the kidney, is activated after renal damage, and preclinical studies have evidenced its potential as a therapeutic target in CKD therapy. To date, seven official EGFR ligands have been described, including epidermal growth factor (EGF) (canonical ligand), transforming growth factor-α, heparin-binding epidermal growth factor, amphiregulin, betacellulin, epiregulin, and epigen. Recently, the connective tissue growth factor (CTGF/CCN2) has been described as a novel EGFR ligand. The direct activation of EGFR by its ligands can exert different cellular responses, depending on the specific ligand, tissue, and pathological condition. Among all EGFR ligands, CTGF/CCN2 is of special relevance in CKD. This growth factor, by binding to EGFR and downstream signaling pathway activation, regulates renal inflammation, cell growth, and fibrosis. EGFR can also be “transactivated” by extracellular stimuli, including several key factors involved in renal disease, such as angiotensin II, transforming growth factor beta (TGFB), and other cytokines, including members of the tumor necrosis factor superfamily, showing another important mechanism involved in renal pathology. The aim of this review is to summarize the contribution of EGFR pathway activation in experimental kidney damage, with special attention to the regulation of the inflammatory response and the role of some EGFR ligands in this process. Better insights in EGFR signaling in renal disease could improve our current knowledge of renal pathology contributing to therapeutic strategies for CKD development and progression.
Collapse
|
7
|
Wells A, Wiley HS. A systems perspective of heterocellular signaling. Essays Biochem 2018; 62:607-617. [PMID: 30139877 PMCID: PMC6309864 DOI: 10.1042/ebc20180015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 07/28/2018] [Accepted: 08/02/2018] [Indexed: 12/21/2022]
Abstract
Signal exchange between different cell types is essential for development and function of multicellular organisms, and its dysregulation is causal in many diseases. Unfortunately, most cell-signaling work has employed single cell types grown under conditions unrelated to their native context. Recent technical developments have started to provide the tools needed to follow signaling between multiple cell types, but gaps in the information they provide have limited their usefulness in building realistic models of heterocellular signaling. Currently, only targeted assays have the necessary sensitivity, selectivity, and spatial resolution to usefully probe heterocellular signaling processes, but these are best used to test specific, mechanistic models. Decades of systems biology research with monocultures has provided a solid foundation for building models of heterocellular signaling, but current models lack a realistic description of regulated proteolysis and the feedback processes triggered within and between cells. Identification and understanding of key regulatory processes in the extracellular environment and of recursive signaling patterns between cells will be essential to building predictive models of heterocellular systems.
Collapse
Affiliation(s)
- Alan Wells
- Departments of Pathology and Computational and Systems Biology, University of Pittsburgh, Pittsburg, PA 15261, U.S.A
| | - H Steven Wiley
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99352, U.S.A.
| |
Collapse
|
8
|
Dasari S, Pandhiri T, Haley J, Lenz D, Mitra AK. A Proximal Culture Method to Study Paracrine Signaling Between Cells. J Vis Exp 2018. [PMID: 30222146 DOI: 10.3791/58144] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Intercellular interactions play an important role in many biological processes, including tumor progression, immune responses, angiogenesis, and development. Paracrine or juxtacrine signaling mediates such interactions. The use of a conditioned medium and coculture studies are the most common methods to discriminate between these two types of interactions. However, the effect of localized high concentrations of secreted factors in the microenvironment during the paracrine interactions is not accurately recapitulated by conditioned medium and, thus, may lead to imprecise conclusions. To overcome this problem, we have devised a proximal culture method to study paracrine signaling. The two cell types are grown on either surface of a 10 µm-thick polycarbonate membrane with 0.4 µm pores. The pores allow the exchange of secreted factors and, at the same time, inhibit juxtacrine signaling. The cells can be collected and lysed at the endpoint to determine the effects of the paracrine signaling. In addition to allowing for localized concentration gradients of secreted factors, this method is amenable to experiments involving prolonged periods of culture, as well as the use of inhibitors. While we use this method to study the interactions between ovarian cancer cells and the mesothelial cells they encounter at the site of metastasis, it can be adapted to any two adherent cell types for researchers to study paracrine signaling in various fields, including tumor microenvironment, immunology, and development.
Collapse
Affiliation(s)
| | | | | | - Dean Lenz
- Urology, Indiana University Health Southern Indiana Physicians
| | - Anirban K Mitra
- Indiana University School of Medicine; Indiana University Melvin and Bren Simon Cancer Center; Department of Medical and Molecular Genetics, Indiana University School of Medicine;
| |
Collapse
|
9
|
Gunawardhana N, Jang S, Choi YH, Hong YA, Jeon YE, Kim A, Su H, Kim JH, Yoo YJ, Merrell DS, Kim J, Cha JH. Helicobacter pylori-Induced HB-EGF Upregulates Gastrin Expression via the EGF Receptor, C-Raf, Mek1, and Erk2 in the MAPK Pathway. Front Cell Infect Microbiol 2018; 7:541. [PMID: 29379775 PMCID: PMC5775237 DOI: 10.3389/fcimb.2017.00541] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 12/26/2017] [Indexed: 12/22/2022] Open
Abstract
Helicobacter pylori is associated with hypergastrinemia, which has been linked to the development of gastric diseases. Although the molecular mechanism is not fully understood, H. pylori is known to modulate the Erk pathway for induction of gastrin expression. Herein we found that an epidermal growth factor (EGF) receptor kinase inhibitor significantly blocked H. pylori-induced gastrin promoter activity, suggesting involvement of EGF receptor ligands. Indeed, H. pylori induced mRNA expression of EGF family members such as amphiregulin, EGF, heparin-binding EGF-like growth factor (HB-EGF), and transforming growth factor-α. Of these, specific siRNA targeting of HB-EGF significantly blocked H. pylori-induced gastrin expression. Moreover, H. pylori induced HB-EGF ectodomain shedding, which we found to be a critical process for H. pylori-induced gastrin expression. Thus, we demonstrate a novel role for human mature HB-EGF in stimulating gastrin promoter activity during H. pylori infection. Further investigation using specific siRNAs targeting each isoform of Raf, Mek, and Erk elucidated that the mechanism underlying H. pylori-induced gastrin expression can be delineated as the sequential activation of HB-EGF, the EGF receptor, C-Raf, Mek1, and the Erk2 molecules in the MAPK pathway. Surprisingly, whereas Erk2 acts as a potent activator of gastrin expression, siRNA knockdown of Erk1 induced gastrin promoter activity, suggesting that Erk1 typically acts as a repressor of gastrin expression. Elucidation of the mechanism of gastrin modulation by HB-EGF-mediated EGF receptor transactivation should facilitate the development of therapeutic strategies against H. pylori-related hypergastrinemia and consequently gastric disease development, including gastric cancers.
Collapse
Affiliation(s)
- Niluka Gunawardhana
- Department of Oral Biology, Oral Science Research Center, Department of Applied Life Science, The Graduate School, BK21 Plus Project, Yonsei University College of Dentistry, Seoul, South Korea.,Department of Basic Sciences, Faculty of Dental Sciences, University of Peradeniya, Peradeniya, Sri Lanka
| | - Sungil Jang
- Department of Oral Biology, Oral Science Research Center, Department of Applied Life Science, The Graduate School, BK21 Plus Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Yun Hui Choi
- Department of Oral Biology, Oral Science Research Center, Department of Applied Life Science, The Graduate School, BK21 Plus Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Youngmin A Hong
- Department of Oral Biology, Oral Science Research Center, Department of Applied Life Science, The Graduate School, BK21 Plus Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Yeong-Eui Jeon
- Department of Oral Biology, Oral Science Research Center, Department of Applied Life Science, The Graduate School, BK21 Plus Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Aeryun Kim
- Department of Oral Biology, Oral Science Research Center, Department of Applied Life Science, The Graduate School, BK21 Plus Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Hanfu Su
- Department of Oral Biology, Oral Science Research Center, Department of Applied Life Science, The Graduate School, BK21 Plus Project, Yonsei University College of Dentistry, Seoul, South Korea.,Microbiology and Molecular Biology, Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ji-Hye Kim
- Department of Dental Hygiene, Jeonju Kijeon College, Jeonju, South Korea
| | - Yun-Jung Yoo
- Department of Oral Biology, Oral Science Research Center, Department of Applied Life Science, The Graduate School, BK21 Plus Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - D Scott Merrell
- Department of Microbiology and Immunology, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Jinmoon Kim
- Department of Oral Biology, Oral Science Research Center, Department of Applied Life Science, The Graduate School, BK21 Plus Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Jeong-Heon Cha
- Department of Oral Biology, Oral Science Research Center, Department of Applied Life Science, The Graduate School, BK21 Plus Project, Yonsei University College of Dentistry, Seoul, South Korea.,Microbiology and Molecular Biology, Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease, Stomatology Hospital of Guangzhou Medical University, Guangzhou, China
| |
Collapse
|
10
|
Abstract
Up to 25% of patients with early-stage HER2+ breast cancer relapse despite adjuvant trastuzumab-based regimens and virtually all patients with metastatic disease eventually die from resistance to existing treatment options. In addition, recent studies indicate that activating HER2 mutations without gene amplification could drive tumor growth in a subset of HER2-negative breast cancer that is not currently eligible for HER2-targeted agents. Neratinib is an irreversible HER kinase inhibitor with activity as extended adjuvant therapy following standard trastuzumab-based adjuvant treatment in a Phase III trial. Phase II trials of neratinib demonstrate promising activity in combination with cytotoxic agents in trastuzumab resistant metastatic HER2+ breast cancer, and either as monotherapy or in combination with fulvestrant for HER2-mutated breast cancers. We anticipate a potential role for neratinib in the therapy of these patient populations.
Collapse
Affiliation(s)
- Mathew A Cherian
- Division of Oncology, Department of Medicine, Washington University in Saint Louis, St Louis, MO 63110, USA
| | - Cynthia X Ma
- Division of Oncology, Department of Medicine, Washington University in Saint Louis, St Louis, MO 63110, USA
| |
Collapse
|
11
|
Stawowczyk M, Wellenstein MD, Lee SB, Yomtoubian S, Durrans A, Choi H, Narula N, Altorki NK, Gao D, Mittal V. Matrix Metalloproteinase 14 promotes lung cancer by cleavage of Heparin-Binding EGF-like Growth Factor. Neoplasia 2016; 19:55-64. [PMID: 28013056 PMCID: PMC5198728 DOI: 10.1016/j.neo.2016.11.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/31/2016] [Accepted: 11/07/2016] [Indexed: 11/24/2022]
Abstract
Molecularly targeted therapies benefit approximately 15–20% of non-small cell lung cancer (NSCLC) patients carrying specific drug-sensitive mutations. Thus, there is a clinically unmet need for the identification of novel targets for drug development. Here, we performed RNA-deep sequencing to identify altered gene expression between malignant and non-malignant lung tissue. Matrix Metalloproteinase 14 (MMP14), a membrane-bound proteinase, was significantly up-regulated in the tumor epithelial cells and intratumoral myeloid compartments in both mouse and human NSCLC. Overexpression of a soluble dominant negative MMP14 (DN-MMP14) or pharmacological inhibition of MMP14 blocked invasion of lung cancer cells through a collagen I matrix in vitro and reduced tumor incidence in an orthotopic K-RasG12D/+p53−/− mouse model of lung cancer. Additionally, MMP14 activity mediated proteolytic processing and activation of Heparin-Binding EGF-like Growth Factor (HB-EGF), stimulating the EGFR signaling pathway to increase proliferation and tumor growth. This study highlights the potential for development of therapeutic strategies that target MMP14 in NSCLC with particular focus on MMP14-HB-EGF axis.
Collapse
Affiliation(s)
- Marcin Stawowczyk
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Department of Cell and Developmental Biology, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Neuberger Berman Lung Cancer Center, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA
| | - Max D Wellenstein
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Neuberger Berman Lung Cancer Center, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA
| | - Sharrell B Lee
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Department of Cell and Developmental Biology, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Neuberger Berman Lung Cancer Center, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA
| | - Shira Yomtoubian
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Neuberger Berman Lung Cancer Center, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Department of pharmacology, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA
| | - Anna Durrans
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Department of Cell and Developmental Biology, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Neuberger Berman Lung Cancer Center, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA
| | - Hyejin Choi
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Department of Cell and Developmental Biology, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Neuberger Berman Lung Cancer Center, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA
| | - Navneet Narula
- Department of Pathology, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA
| | - Nasser K Altorki
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA
| | - Dingcheng Gao
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Department of Cell and Developmental Biology, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Neuberger Berman Lung Cancer Center, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Weill Cornell Graduate School of Medical Sciences, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA.
| | - Vivek Mittal
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Department of Cell and Developmental Biology, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA; Neuberger Berman Lung Cancer Center, Weill Cornell Medicine, 1300 York Avenue, 525 East 68th Street, NY, New York 10065, USA.
| |
Collapse
|
12
|
Chen J, Zeng F, Forrester SJ, Eguchi S, Zhang MZ, Harris RC. Expression and Function of the Epidermal Growth Factor Receptor in Physiology and Disease. Physiol Rev 2016; 96:1025-1069. [DOI: 10.1152/physrev.00030.2015] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The epidermal growth factor receptor (EGFR) is the prototypical member of a family of membrane-associated intrinsic tyrosine kinase receptors, the ErbB family. EGFR is activated by multiple ligands, including EGF, transforming growth factor (TGF)-α, HB-EGF, betacellulin, amphiregulin, epiregulin, and epigen. EGFR is expressed in multiple organs and plays important roles in proliferation, survival, and differentiation in both development and normal physiology, as well as in pathophysiological conditions. In addition, EGFR transactivation underlies some important biologic consequences in response to many G protein-coupled receptor (GPCR) agonists. Aberrant EGFR activation is a significant factor in development and progression of multiple cancers, which has led to development of mechanism-based therapies with specific receptor antibodies and tyrosine kinase inhibitors. This review highlights the current knowledge about mechanisms and roles of EGFR in physiology and disease.
Collapse
Affiliation(s)
- Jianchun Chen
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Fenghua Zeng
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Steven J. Forrester
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Satoru Eguchi
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Ming-Zhi Zhang
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Raymond C. Harris
- Departments of Medicine, Cancer Biology, and Molecular Physiology and Biophysics, Vanderbilt University School of Medicine and Nashville Veterans Affairs Hospital, Nashville, Tennessee; and Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| |
Collapse
|
13
|
Chen YC, Ingram PN, Fouladdel S, McDermott SP, Azizi E, Wicha MS, Yoon E. High-Throughput Single-Cell Derived Sphere Formation for Cancer Stem-Like Cell Identification and Analysis. Sci Rep 2016; 6:27301. [PMID: 27292795 PMCID: PMC4904376 DOI: 10.1038/srep27301] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Accepted: 04/27/2016] [Indexed: 01/05/2023] Open
Abstract
Considerable evidence suggests that many malignancies are driven by a cellular compartment that displays stem cell properties. Cancer stem-like cells (CSCs) can be identified by expression of cell surface markers or enzymatic activity, but these methods are limited by phenotypic heterogeneity and plasticity of CSCs. An alternative phenotypic methodology based on in-vitro sphere formation has been developed, but it is typically labor-intensive and low-throughput. In this work, we present a 1,024-microchamber microfluidic platform for single-cell derived sphere formation. Utilizing a hydrodynamic capturing scheme, more than 70% of the microchambers capture only one cell, allowing for monitoring of sphere formation from heterogeneous cancer cell populations for identification of CSCs. Single-cell derived spheres can be retrieved and dissociated for single-cell analysis using a custom 96-gene panel to probe heterogeneity within the clonal CSC spheres. This microfluidic platform provides reliable and high-throughput sphere formation for CSC identification and downstream clonal analysis.
Collapse
MESH Headings
- Animals
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Cell Line, Tumor
- Female
- Humans
- Hydrogels/chemistry
- Lab-On-A-Chip Devices
- MCF-7 Cells
- Mice
- Mice, Inbred NOD
- Mice, SCID
- Microfluidics/instrumentation
- Microfluidics/methods
- Microscopy, Electron, Scanning
- Neoplastic Stem Cells/cytology
- Neoplastic Stem Cells/metabolism
- Polyhydroxyethyl Methacrylate/chemistry
- Receptors, Notch/genetics
- Receptors, Notch/metabolism
- Single-Cell Analysis/methods
- Spheroids, Cellular/cytology
- Spheroids, Cellular/metabolism
- Transplantation, Heterologous
Collapse
Affiliation(s)
- Yu-Chih Chen
- Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109-2122, USA
- University of Michigan Comprehensive Cancer Center, 1500 East Medical Center Drive, Ann Arbor, MI 48109-5940, USA
| | - Patrick N. Ingram
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI 48109-2099, USA
| | - Shamileh Fouladdel
- University of Michigan Comprehensive Cancer Center, 1500 East Medical Center Drive, Ann Arbor, MI 48109-5940, USA
| | - Sean P. McDermott
- University of Michigan Comprehensive Cancer Center, 1500 East Medical Center Drive, Ann Arbor, MI 48109-5940, USA
| | - Ebrahim Azizi
- University of Michigan Comprehensive Cancer Center, 1500 East Medical Center Drive, Ann Arbor, MI 48109-5940, USA
| | - Max S. Wicha
- University of Michigan Comprehensive Cancer Center, 1500 East Medical Center Drive, Ann Arbor, MI 48109-5940, USA
| | - Euisik Yoon
- Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Avenue, Ann Arbor, MI 48109-2122, USA
- Department of Biomedical Engineering, University of Michigan, 2200 Bonisteel Blvd, Ann Arbor, MI 48109-2099, USA
| |
Collapse
|
14
|
Lian C, Ruan L, Shang D, Wu Y, Lu Y, Lü P, Yang Y, Wei Y, Dong X, Ren D, Chen K, Liu H, Tu Z. Heparin-Binding Epidermal Growth Factor-Like Growth Factor as a Potent Target for Breast Cancer Therapy. Cancer Biother Radiopharm 2016; 31:85-90. [DOI: 10.1089/cbr.2015.1956] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Caixia Lian
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Lingling Ruan
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Dongsheng Shang
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Yanfang Wu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Yongjin Lu
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Peng Lü
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Yuhua Yang
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Yajun Wei
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Xiaojing Dong
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Dewan Ren
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Keping Chen
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| | - Hanqing Liu
- School of Pharmacy, Jiangsu University, Zhenjiang, China
| | - Zhigang Tu
- Institute of Life Sciences, Jiangsu University, Zhenjiang, China
| |
Collapse
|
15
|
Forrester SJ, Kawai T, O'Brien S, Thomas W, Harris RC, Eguchi S. Epidermal Growth Factor Receptor Transactivation: Mechanisms, Pathophysiology, and Potential Therapies in the Cardiovascular System. Annu Rev Pharmacol Toxicol 2015; 56:627-53. [PMID: 26566153 DOI: 10.1146/annurev-pharmtox-070115-095427] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Epidermal growth factor receptor (EGFR) activation impacts the physiology and pathophysiology of the cardiovascular system, and inhibition of EGFR activity is emerging as a potential therapeutic strategy to treat diseases including hypertension, cardiac hypertrophy, renal fibrosis, and abdominal aortic aneurysm. The capacity of G protein-coupled receptor (GPCR) agonists, such as angiotensin II (AngII), to promote EGFR signaling is called transactivation and is well described, yet delineating the molecular processes and functional relevance of this crosstalk has been challenging. Moreover, these critical findings are dispersed among many different fields. The aim of our review is to highlight recent advancements in defining the signaling cascades and downstream consequences of EGFR transactivation in the cardiovascular renal system. We also focus on studies that link EGFR transactivation to animal models of the disease, and we discuss potential therapeutic applications.
Collapse
Affiliation(s)
- Steven J Forrester
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania 19140;
| | - Tatsuo Kawai
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania 19140;
| | - Shannon O'Brien
- The School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Walter Thomas
- The School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland 4072, Australia
| | - Raymond C Harris
- Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee 37232
| | - Satoru Eguchi
- Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania 19140;
| |
Collapse
|
16
|
Parks EE, Ceresa BP. Cell surface epidermal growth factor receptors increase Src and c-Cbl activity and receptor ubiquitylation. J Biol Chem 2014; 289:25537-45. [PMID: 25074934 PMCID: PMC4162159 DOI: 10.1074/jbc.m114.579581] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Revised: 07/07/2014] [Indexed: 11/06/2022] Open
Abstract
There is an established role for the endocytic pathway in regulation of epidermal growth factor receptor (EGFR) signaling to downstream effectors. However, because ligand-mediated EGFR endocytosis utilizes multiple "moving parts," dissecting the spatial versus temporal contributions has been challenging. Blocking all endocytic trafficking can have unintended effects on other receptors as well as give rise to compensatory mechanisms, both of which impact interpretation of EGFR signaling. To overcome these limitations, we used epidermal growth factor (EGF) conjugated to polystyrene beads (EGF beads). EGF beads simultaneously activate the EGFR while blocking its endocytosis and allow analysis of EGFR signaling from the plasma membrane. Human telomerase immortalized corneal epithelial (hTCEpi) cells were used to model normal epithelial cell biology. In hTCEpi cells, both cell surface and intracellular EGFRs exhibited dose-dependent increases in effector activity after 15 min of ligand stimulation, but only the serine phosphorylation of signal transducer and activator of transcription 3 (STAT3) was statistically significant when accounting for receptor phosphorylation. However, over time with physiological levels of receptor phosphorylation, cell surface receptors produced either enhanced or sustained mitogen-activated protein kinase kinase (MEK), Casitas B-lineage lymphoma (c-Cbl), and the pro-oncogene Src activity. These increases in effector communication by cell surface receptors resulted in an increase in EGFR ubiquitylation with sustained ligand incubation. Together, these data indicate that spatial regulation of EGFR signaling may be an important regulatory mechanism in receptor down-regulation.
Collapse
Affiliation(s)
- Eileen E Parks
- From the Department of Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky 40202
| | - Brian P Ceresa
- From the Department of Pharmacology and Toxicology, University of Louisville, Louisville, Kentucky 40202
| |
Collapse
|
17
|
Al Heialy S, Risse PA, Zeroual MA, Roman HN, Tsuchiya K, Siddiqui S, Laporte SA, Martin JG. T cell-induced airway smooth muscle cell proliferation via the epidermal growth factor receptor. Am J Respir Cell Mol Biol 2014; 49:563-70. [PMID: 23656597 DOI: 10.1165/rcmb.2012-0356oc] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Allergic asthma is a heterogeneous disease with no curative therapies. T cells infiltrate the airway smooth muscle (ASM) layer and may be implicated in airway remodeling and the increase of ASM mass, a cardinal feature of asthma. The mechanism by which CD4(+) T cells drive airway remodeling remains unknown. This study sought to determine the T cell-mediated mechanism of ASM cell proliferation. We hypothesized that CD4(+) T cells adhere to ASM cells via CD44, and induce ASM cell proliferation through the activation of the epidermal growth factor receptor (EGFR). A coculture model showed that the contact of antigen-stimulated CD4(+) T cells with ASM cells induced high levels of EGFR ligand expression in CD4(+) T cells and the activation of matrix metalloproteinase (MMP)-9, required for the shedding of EGFR ligands. The inhibition of EGFR and MMP-9 prevented the increase of ASM cell proliferation after coculture. The hyaluronan receptor CD44 is the dominant mediator of the tight adherence of T cells to ASM and is colocalized with MMP-9 on the cell surface. Moreover, the neutralization of CD44 prevents ASM cell hyperplasia. These data provide a novel mechanism by which antigen-stimulated CD4(+) T cells induce the remodeling indicative of a direct trophic role for CD4(+) T cells.
Collapse
|
18
|
Ceresa BP, Peterson JL. Cell and molecular biology of epidermal growth factor receptor. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2014; 313:145-78. [PMID: 25376492 DOI: 10.1016/b978-0-12-800177-6.00005-0] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The epidermal growth factor receptor (EGFR) has been one of the most intensely studied cell surface receptors due to its well-established roles in developmental biology, tissue homeostasis, and cancer biology. The EGFR has been critical for creating paradigms for numerous aspects of cell biology, such as ligand binding, signal transduction, and membrane trafficking. Despite this history of discovery, there is a continual stream of evidence that only the surface has been scratched. New ways of receptor regulation continue to be identified, each of which is a potential molecular target for manipulating EGFR signaling and the resultant changes in cell and tissue biology. This chapter is an update on EGFR-mediated signaling, and describes some recent developments in the regulation of receptor biology.
Collapse
Affiliation(s)
- Brian P Ceresa
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, USA
| | - Joanne L Peterson
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, USA
| |
Collapse
|
19
|
Saad S, Zhang J, Yong R, Yaghobian D, Wong MG, Kelly DJ, Chen XM, Pollock CA. Role of the EGF receptor in PPARγ-mediated sodium and water transport in human proximal tubule cells. Diabetologia 2013; 56:1174-82. [PMID: 23370527 DOI: 10.1007/s00125-013-2835-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Accepted: 01/04/2013] [Indexed: 01/17/2023]
Abstract
AIM/HYPOTHESIS This study aimed to determine the interaction between the EGF receptor (EGFR) and peroxisome proliferator-activated receptor γ (PPARγ) and the role of EGFR in sodium and water transport in the proximal tubule. METHODS Primary human proximal tubule cells (PTCs) were exposed to high glucose in the presence and absence of pioglitazone. Total and phospho-EGFR levels and EGFR mRNA expression were determined by western blot and real-time PCR, respectively. Sodium-hydrogen exchanger-3 (NHE3), PPARγ and aquaporin 1 (AQP1) levels were determined by western blot. The role of EGFR was elucidated using the EGFR tyrosine kinase inhibitor, PKI166. The role of PPARγ in high-glucose conditions was determined using specific PPARγ small interfering (si)RNA. P-EGFR, PPARγ, AQP1 and NHE3 production in a rat model of diabetes (streptozotocin-induced hypertensive Ren-2 transgenic [mRen2]27 rats) and controls, with or without pioglitazone treatment, was determined by immunohistochemistry. The PPARγ and EGFR interaction was determined by chromatin immunoprecipitation assay, and the effect of pioglitazone on EGFR activation by luciferase assay. RESULTS PTCs exposed to both high glucose and pioglitazone increased protein abundance of P-EGFR, NHE3, AQP1 and PPARγ. Pioglitazone-induced upregulation of NHE3 and AQP1 was abolished by PKI166. High-glucose-induced increases in P-EGFR, NHE3 and AQP1 were decreased with PPARγ siRNA. AQP1 and NHE3 but not PPARγ were increased in a diabetic rat model and further increased by pioglitazone treatment. Pioglitazone induced PPARγ binding to the EGFR promoter and subsequent downstream activation. CONCLUSIONS/INTERPRETATION Our data suggest that EGFR activation mediates PPARγ-induced sodium and water reabsorption via upregulation of NHE3 and AQP1 channels in the proximal tubule. EGFR inhibition may be a therapeutic strategy in the treatment of diabetic nephropathy and in limiting salt and water retention, which currently restricts the use of PPARγ agonists.
Collapse
Affiliation(s)
- S Saad
- Renal Research Laboratories, Kolling Institute of Medical Research, Royal North Shore Hospital, Kolling Building, St Leonards, NSW 2065, Australia.
| | | | | | | | | | | | | | | |
Collapse
|
20
|
Intercellular contact augments epidermal growth factor receptor (EGFR) and signal transducer and activator of transcription 3 (STAT3)-activation which increases podoplanin-expression in order to promote squamous cell carcinoma motility. Cell Signal 2013; 25:760-5. [DOI: 10.1016/j.cellsig.2012.12.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 12/18/2012] [Indexed: 01/13/2023]
|
21
|
Identification of the cancer cell proliferation and survival functions of proHB-EGF by using an anti-HB-EGF antibody. PLoS One 2013; 8:e54509. [PMID: 23349913 PMCID: PMC3549951 DOI: 10.1371/journal.pone.0054509] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Accepted: 12/12/2012] [Indexed: 11/19/2022] Open
Abstract
PURPOSE Heparin-binding epidermal growth factor-like growth factor (HB-EGF) is a member of the epidermal growth factor family. The membrane-bound proHB-EGF is known to be a precursor of the soluble form of HB-EGF (sHB-EGF), which promotes cell proliferation and survival. While the functions of sHB-EGF have been extensively studied, it is not yet fully understood if proHB-EGF is also involved in cellular signaling events. In this study, we utilized the anti-HB-EGF monoclonal antibodies Y-142 and Y-073, which have differential specificities toward proHB-EGF, in order to elucidate proHB-EGF functions in cancer cells. EXPERIMENTAL DESIGN The biological activities of proHB-EGF were assessed in cell proliferation, caspase activation, and juxtacrine activity assays by using a 3D spheroid culture of NUGC-3 cells. RESULTS Y-142 and Y-073 exhibited similar binding and neutralizing activities for sHB-EGF. However, only Y-142 bound to proHB-EGF. We could detect the function of endogenously expressed proHB-EGF in a 3D spheroid culture. Blocking proHB-EGF with Y-142 reduced spheroid formation, suppressed cell proliferation, and increased caspase activation in the 3D spheroid culture of NUGC-3 cells. CONCLUSIONS Our results show that proHB-EGF acts as a cell proliferation and cell survival factor in cancer cells. The results suggest that proHB-EGF may play an important role in tumor progression.
Collapse
|
22
|
Ceresa BP. Spatial regulation of epidermal growth factor receptor signaling by endocytosis. Int J Mol Sci 2012; 14:72-87. [PMID: 23344022 DOI: 10.3390/ijms14010072] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 12/10/2012] [Accepted: 12/12/2012] [Indexed: 12/26/2022] Open
Abstract
Signaling by cell surface receptors appears to be relatively straight-forward: ligand binds to the extracellular domain of the receptor and biochemical changes are communicated into the cell. However, this process is more complex than it first seems due to the various mechanisms that regulate signaling. In order to effectively target these receptors for pharmacological purposes, a more complete understanding of how their signaling is regulated is needed. Here, how the endocytic pathway regulates receptor signaling is discussed, using the epidermal growth factor receptor (EGFR) as a model. In particular, the spatial regulation of signaling is examined. Areas of discussion include: how endocytic trafficking affects biology/pathology, varying approaches for studying the relationship between receptor endocytosis and signaling, and developments in how the endocytic pathway controls EGFR:effector communication and EGFR-mediated cell biology.
Collapse
Affiliation(s)
- Brian P Ceresa
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY 40202, USA.
| |
Collapse
|
23
|
Gewin L, Vadivelu S, Neelisetty S, Srichai MB, Paueksakon P, Pozzi A, Harris RC, Zent R. Deleting the TGF-β receptor attenuates acute proximal tubule injury. J Am Soc Nephrol 2012; 23:2001-11. [PMID: 23160515 DOI: 10.1681/asn.2012020139] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
TGF-β is a profibrotic growth factor in CKD, but its role in modulating the kidney's response to AKI is not well understood. The proximal tubule epithelial cell, which is the main cellular target of AKI, expresses high levels of both TGF-β and its receptors. To determine how TGF-β signaling in this tubular segment affects the response to AKI, we selectively deleted the TGF-β type II receptor in the proximal tubules of mice. This deletion attenuated renal impairment and reduced tubular apoptosis in mercuric chloride-induced injury. In vitro, deficiency of the TGF-β type II receptor protected proximal tubule epithelial cells from hydrogen peroxide-induced apoptosis, which was mediated in part by Smad-dependent signaling. Taken together, these results suggest that TGF-β signaling in the proximal tubule has a detrimental effect on the response to AKI as a result of its proapoptotic effects.
Collapse
Affiliation(s)
- Leslie Gewin
- Department of Research, Veterans Affairs Hospital, Tennessee Valley Healthcare System, Nashville, Tennessee, USA.
| | | | | | | | | | | | | | | |
Collapse
|
24
|
Flamant M, Bollee G, Henique C, Tharaux PL. Epidermal growth factor: a new therapeutic target in glomerular disease. Nephrol Dial Transplant 2012; 27:1297-304. [DOI: 10.1093/ndt/gfs030] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
|
25
|
Ke X, Li L, Dong HL, Chen ZN. Acquisition of anoikis resistance through CD147 upregulation: A new mechanism underlying metastasis of hepatocellular carcinoma cells. Oncol Lett 2012; 3:1249-1254. [PMID: 22783427 DOI: 10.3892/ol.2012.658] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Accepted: 02/17/2012] [Indexed: 11/05/2022] Open
Abstract
Acquisition of anoikis resistance is a prerequisite for the metastasis of hepatocellular carcinoma (HCC) cells. Activation of growth factor signaling pathways and rearrangement of the cytoskeleton have been reported as vital steps in this process. However, key molecules involved in anoikis resistance remain to be determined. The aim of this study was to investigate the effect of CD147 on HCC cells resistant to anoikis. The human SMMC-7221 human HCC cell line was used. Immunofluorescence was used to investigate the expression levels of CD147. Anoikis-induced cell death was assessed using trypan blue exclusion. In the present study, the results showed that SMMC-7721 HCC cells exhibited significant morphological changes when suspended in culture medium supplemented with 1% methocel and a subpopulation of cells resistant to anoikis was acquired with higher viability and invasion ability. CD147 was identified to be significantly increased in cells resistant to anoikis, when compared to the parental cells. CD147 knockdown by siRNA notably induced cell anoikis, partially through the inactivation of PI3K/Akt pathway. All of these evidence provide a novel CD147-related mechanism underlying the metastasis of HCC cells.
Collapse
Affiliation(s)
- Xia Ke
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237
| | | | | | | |
Collapse
|
26
|
Yang S, Yao B, Zhou Y, Yin H, Zhang MZ, Harris RC. Intrarenal dopamine modulates progressive angiotensin II-mediated renal injury. Am J Physiol Renal Physiol 2011; 302:F742-9. [PMID: 22169008 DOI: 10.1152/ajprenal.00583.2011] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
It is well-recognized that excessive angiotensin II (ANG II) can mediate progressive renal injury. Previous studies by us and others have indicated that dopamine may modulate actions of ANG II in the kidney. The current studies investigated whether altering intrarenal dopamine levels affected ANG II-mediated renal fibrosis. We utilized a model of increased intrarenal dopamine, catechol-O-methyl-transferase knockout (COMT KO) mice, which have increased kidney dopamine levels due to deletion of a major intrarenal dopamine-metabolizing enzyme. In wild-type mice, chronic ANG II infusion increased renal expression of both of the major dopamine-metabolizing enzymes, COMT and monoamine oxidase. After 8 wk of ANG II infusion, there were no significant differences in blood pressure between wild-type and COMT KO mice. Compared with wild-type, COMT KO mice had decreased albuminuria and tubulointerstitial injury. In response to ANG II infusion, there was decreased expression of both glomerular and tubulointerstitial injury markers (fibronectin, connective tissue growth factor, fibroblast-specific protein-1, collagen I, podocyte vascular endothelial growth factor) in COMT KO mice. We recently reported that ANG II-mediated tubulointerstitial fibrosis is mediated by src-dependent epidermal growth factor receptor (EGFR) activation. In aromatic l-amino acid decarboxylase knockout (AADC KO) mice, a model of intrarenal dopamine deficiency due to selective proximal tubule AADC deletion, which inhibits intrarenal dopamine synthesis, ANG II infusion further increased expression of p-src and pTyr845-EGFR. In contrast, their expression was markedly attenuated in COMT KO mice. These results demonstrate a role for intrarenal dopamine to buffer the detrimental effects of ANG II upon the kidney.
Collapse
Affiliation(s)
- Shilin Yang
- Nashville Veterans Affairs Hospital and Vanderbilt University School of Medicine, Nashville, Tennessee 37232, USA
| | | | | | | | | | | |
Collapse
|
27
|
Boucher I, Kehasse A, Marcincin M, Rich C, Rahimi N, Trinkaus-Randall V. Distinct activation of epidermal growth factor receptor by UTP contributes to epithelial cell wound repair. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 178:1092-105. [PMID: 21356361 DOI: 10.1016/j.ajpath.2010.11.060] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2010] [Revised: 10/13/2010] [Accepted: 11/23/2010] [Indexed: 01/05/2023]
Abstract
The release of nucleotides after injury activates purinergic receptors, leading to phosphorylation of site-specific residues on epidermal growth factor receptor (EGFR). To elucidate the differences between the injury-induced response and that induced by exogenous EGF, we examined recruitment of docking proteins, internalization of EGFR, and migration after injury. Injury induced by scratch wounds or stimulation by addition of UTP caused a brief internalization of EGFR, which paralleled the lesser association with growth factor receptor-bound protein 2 (Grb2) and phosphorylation of EGFR. The internalization caused by EGF was sustained and detected for longer than 60 minutes and correlated with phosphorylation of the receptor. The EGF caused recruitment of Grb2, phospholipase C-γ-1 (PLCγ1), Shc, and Src to EGFR. Glutathione S-transferase pull downs were performed, and glutathione S-transferase-PLCγ1 showed binding of Grb2 when stimulated with EGF but not with UTP or injury. Furthermore, UTP did not induce PLCγ1 phosphorylation, and the phosphorylation induced by EGF was attenuated by costimulation with UTP. The response to heparin-binding EGF was equivalent to that of EGF. Site-directed mutagenesis showed that phosphorylation of Y1068 and Y1086 of EGFR is required for repair. Together, our results show that injury and activation of purinergic receptors and direct activation of EGFR via EGF induce distinct downstream pathways.
Collapse
Affiliation(s)
- Ilene Boucher
- Department of Biochemistry, Boston University School of Medicine, Boston, Massachusetts 02118, USA
| | | | | | | | | | | |
Collapse
|
28
|
Claudin-2 expression increases tumorigenicity of colon cancer cells: role of epidermal growth factor receptor activation. Oncogene 2011; 30:3234-47. [PMID: 21383692 PMCID: PMC3591522 DOI: 10.1038/onc.2011.43] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Claudin-2 is a unique member of the claudin family of transmembrane proteins as its expression is restricted to the leaky epithelium in vivo and correlates with epithelial leakiness in vitro. However, recent evidence suggests potential functions of claudin-2 that are relevant to neoplastic transformation and growth. In accordance here we report, based upon analysis of mRNA and protein expression using a total of 309 patient samples, that claudin-2 expression is significantly increased in colorectal cancer and correlates with cancer progression. We also report similar increases in claudin-2 expression in inflammatory bowel disease (IBD)-associated colorectal cancer. Most importantly, we demonstrate that the increased claudin-2 expression in colorectal cancer is causally associated with tumor growth as forced claudin-2 expression in colon cancer cells that do not express claudin-2 resulted in significant increases in cell proliferation, anchorage-independent growth, and tumor growth in vivo. We further show that the colonic microenvironment regulates claudin-2 expression in a manner dependent on signaling through the EGF receptor (EGFR), a key regulator of colon tumorigenesis. In addition, claudin-2 expression is specifically decreased in the colon of waved-2 mice, naturally deficient in EGFR activation. Furthermore, genetic silencing of claudin-2 expression in Caco-2 , a colon cancer cell line, prevents the EGF-induced increase in cell proliferation. Taken together, these results uncover a novel role for claudin-2 in promoting colon cancer, potentially via EGFR transactivation.
Collapse
|
29
|
Terakado M, Gon Y, Sekiyama A, Takeshita I, Kozu Y, Matsumoto K, Takahashi N, Hashimoto S. The Rac1/JNK pathway is critical for EGFR-dependent barrier formation in human airway epithelial cells. Am J Physiol Lung Cell Mol Physiol 2010; 300:L56-63. [PMID: 21036915 DOI: 10.1152/ajplung.00159.2010] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
The airway epithelial barrier provides defenses against inhaled antigens and pathogens, and alterations of epithelial barrier function have been proposed to play a significant role in the pathogenesis of chronic airway diseases. Although the epidermal growth factor receptor (EGFR) plays roles in various physiological and pathological processes on the airway epithelium, the role of EGFR on barrier function in the airway remains largely unknown. In the present study, we assessed the effects of EGFR activation on paracellular permeability in airway epithelial cells (AECs). EGFR activation induced by the addition of EGF increased transepithelial electrical resistance (TER) in AECs. An EGFR-blocking antibody eradicated the development of TER, paracellular influx of dextran, and spatial organization of tight junction. Moreover, the effects of EGFR activation on paracellular permeability were eradicated by knockdown of occludin. To identify the EGFR signaling pathway that regulates permeability barrier development, we investigated the effects of several MAP kinase inhibitors on permeability barrier function. Pretreatment with a JNK-specific inhibitor, but not an ERK- or p38-specific inhibitor, attenuated the development of TER induced by EGFR activation. Rac1 is one of the upstream activators for JNK in EGFR signaling. Rac1 knockdown attenuated the phosphorylation of JNK activation and EGFR-mediated TER development. These results suggest that EGFR positively regulates permeability barrier development through the Rac1/JNK-dependent pathway.
Collapse
Affiliation(s)
- Masahiro Terakado
- Dept. of Internal Medicine, Nihon Univ. School of Medicine, Tokyo, Japan
| | | | | | | | | | | | | | | |
Collapse
|
30
|
Su K, Lei J, Zhang W, Zhang Z, Li X, Zhou Y, Zhang P, Wang X. [Screening metastasis-associated genes from anoikis resistant A549 lung cancer cells by human genome array]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2010; 13:22-7. [PMID: 20672699 PMCID: PMC6000681 DOI: 10.3779/j.issn.1009-3419.2010.01.04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
背景与目的 正常上皮或内皮细胞脱离细胞外基质会发生脱落凋亡,但肿瘤细胞可不依赖细胞基质生长而不发生凋亡,这一现象被称为抗脱落凋亡,目前国内外相关研究均认为抗脱落凋亡是肿瘤发生转移的始动环节。本实验旨在比较抗脱落凋亡及正常贴壁生长肺腺癌A549细胞基因组表达差异,从中筛选肺癌转移相关基因。 方法 利用多聚羟乙基甲基丙烯酸树脂处理培养皿,致细胞无法贴壁生长,建立抗脱落凋亡肺癌A549细胞系;利用北京博奥生物芯片公司的人类V2.0全基因组寡核苷酸微阵列芯片,检测其与正常贴壁生长A549细胞的基因表达差异性,筛选肺癌转移相关基因。 结果 共得到表达差异的基因745个,从中筛选出63个与肺癌转移密切相关的基因。 结论 成功建立抗脱落凋亡肺癌A549细胞系并筛选出转移相关差异表达基因,为进一步研究肺癌转移相关信号转导通路及其它相关研究提供依据。
Collapse
Affiliation(s)
- Kai Su
- Department of Thoracic Surgery, Tangdu Hospital, the Fourth Military Medical University, Xi'an 710038, China
| | | | | | | | | | | | | | | |
Collapse
|
31
|
Chen CL, Mehta VB, Zhang HY, Wu D, Otabor I, Radulescu A, El-Assal ON, Feng J, Chen Y, Besner GE. Intestinal phenotype in mice overexpressing a heparin-binding EGF-like growth factor transgene in enterocytes. Growth Factors 2010; 28:82-97. [PMID: 19939201 PMCID: PMC3821006 DOI: 10.3109/08977190903407365] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
PRIMARY OBJECTIVE Heparin-binding EGF-like growth factor (HB-EGF) protects the intestine from damage in animals. Future clinical trials of HB-EGF may involve administration of repeated doses of HB-EGF. Since HB-EGF activates EGF receptors which have been implicated in tumor development, we examined the effects of HB-EGF overexpression in the intestine. RESEARCH DESIGN We generated transgenic (TG) mice in which the human HB-EGF gene is driven by the villin promoter to overexpress HB-EGF along the crypt-villous axis from the duodenum to the colon. RESULTS HB-EGF TG mice have increased enterocyte proliferation balanced by increased enterocyte apoptosis. Despite prolonged overexpression of HB-EGF, no evidence of intestinal hyperplasia or tumor formation occurs. Although HB-EGF TG mice have no significant phenotypic alterations under basal conditions, they have increased resistance to intestinal injury. CONCLUSIONS Prolonged intestinal HB-EGF overexpression results in no significant phenotypic alterations under basal conditions, but confers protection against intestinal injury.
Collapse
Affiliation(s)
- Chun-Liang Chen
- Department of Pediatric Surgery, The Research Institute at Nationwide Children's Hospital, Center for Perinatal Research, Nationwide Children's Hospital, The Ohio State University College of Medicine, Columbus, OH, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Humtsoe JO, Kramer RH. Differential epidermal growth factor receptor signaling regulates anchorage-independent growth by modulation of the PI3K/AKT pathway. Oncogene 2009; 29:1214-26. [PMID: 19935697 PMCID: PMC2829113 DOI: 10.1038/onc.2009.419] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Tumor cells are capable of surviving loss of nutrients and anchorage in hostile microenvironments. Under these conditions adapting to specific signaling pathways may shift the balance between growth and cellular dormancy. Here we report a mechanism by which EGFR differentially modulates the PI3K/AKT pathway in cellular stress conditions. When carcinoma cells were cultured as multicellular aggregates (MCA), cyclin D1 was induced through a serum-dependent EGFR activating pathway, triggering cell proliferation. The expression of cyclin D1 required both EGFR-mediated ERK and AKT activation. In serum-starved MCAs, EGFR activation was associated with active ERK1/2 but not AKT and failed to induce cyclin D1. Analysis revealed that, under serum-starved conditions, EGFR-Y1086 residue was poorly autophosphorylated and this correlated with failure to phosphorylate Gab1. Accordingly, the EGFR activation failed to induce EGFR/PI3K complex formation or AKT activation, preventing cyclin D1 induction. Furthermore, we show that in serum-starved MCA, expression of constitutively active AKT re-established cyclin D1 expression and induced proliferation in an EGFR-dependent manner. Thus, modulation of the PI3K/AKT pathway by context-dependent EGFR signaling may regulate tumor cell growth and dormancy.
Collapse
Affiliation(s)
- J O Humtsoe
- Department of Cell and Tissue Biology, University of California San Francisco, San Francisco, CA 94143-0640, USA
| | | |
Collapse
|
33
|
Peter Y, Comellas A, Levantini E, Ingenito EP, Shapiro SD. Epidermal growth factor receptor and claudin-2 participate in A549 permeability and remodeling: implications for non-small cell lung cancer tumor colonization. Mol Carcinog 2009; 48:488-97. [PMID: 18942115 DOI: 10.1002/mc.20485] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Tumor colonization involves changes in cell permeability and remodeling. Paracellular permeability is regulated by claudins, integrated tight junction (TJ) proteins, located on the apicolateral portion of epithelial cells. Epidermal growth factor (EGF) was reported to modify cellular claudin levels and induce remodeling. To investigate a role for EGF receptor (EGFR) activation in tumor colonization we studied the effect of EGF and claudin-2 overexpression on permeability and cell reorganization in the human A549 non-small cell lung cancer (NSCLC) cell line. Our data demonstrated that A549 cells possess functional TJs and that EGF treatment increased levels of claudin-2 expression by 46%. Furthermore, EGFR signaling reduced monolayer permeability to choline and triggered cellular remodeling. The mitogen-activated protein kinase inhibitor PD98059 blocked the effect on A549 permeability and remodeling. EGF stimulation also exacerbated a fourfold increase in cell colonization elicited by claudin-2 upregulation. Our findings are consistent with the hypothesis that EGFR signaling plays an important role in A549 cell physiology and acts synergistically with claudin-2 to accelerate tumor colonization. Understanding the influence of EGF on A549 cell permeability and reorganization will help shed light on NSCLC tumor colonization and contribute to the development of novel anti-cancer treatments.
Collapse
Affiliation(s)
- Yakov Peter
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | | | | | | | | |
Collapse
|
34
|
Lisi S, D'Amore M, Scagliusi P, Mitolo V, Sisto M. Anti-Ro/SSA autoantibody-mediated regulation of extracellular matrix fibulins in human epithelial cells of the salivary gland. Scand J Rheumatol 2009; 38:198-206. [PMID: 19229767 DOI: 10.1080/03009740802520722] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVES The fibulins are a family of extracellular matrix (ECM) molecules that regulate the organ shape along with other growth factors and stromal cells and have recently been shown to be involved in a variety of cellular functions including proliferation, migration, differentiation, and survival. Important changes in acinar and ductal morphology and function, together with pronounced ECM remodelling, are detectable in the labial salivary glands (LSGs) of patients with Sjögren's syndrome (SS). Here we report the in vitro expression of the recently identified ECM proteins fibulin-6 and fibulin-7 by human salivary gland epithelial cells (SGECs). The ability of anti-Ro/SSA autoantibodies (Abs) to modulate fibulin-6 and fibulin-7 expression was investigated. METHODS Semiquantitative reverse transcription polymerase chain reaction (RT-PCR) and real-time PCR were used to analyse fibulin-6 and fibulin-7 mRNA expression. Confocal microscopy and fluorescence-activated cell sorting (FACS) were used to study expression of the proteins in primary human SGEC cultures, established from biopsies of minor LSGs, in both untreated control cells and anti-Ro/SSA Abs-treated cells. RESULTS The methods used show the expression of fibulin-6 and fibulin-7 in SGECs. Treatment of cells with anti-Ro/SSA Abs results in a down-regulation of fibulin-6 mRNA expression whereas no significant differences were observed in fibulin-7 expression between untreated and treated cells. CONCLUSION Dysregulation of fibulin expression in SGECs by anti-Ro/SSA Abs may contribute to disorganization of the ECM environment and thus cause injury to the salivary gland architecture and functionality observed in SS.
Collapse
Affiliation(s)
- S Lisi
- Department of Human Anatomy and Histology, University of Bari, Bari, Italy
| | | | | | | | | |
Collapse
|
35
|
Sisto M, D'Amore M, Lofrumento DD, Scagliusi P, D'Amore S, Mitolo V, Lisi S. Fibulin-6 expression and anoikis in human salivary gland epithelial cells: implications in Sjogren's syndrome. Int Immunol 2009; 21:303-11. [PMID: 19190085 DOI: 10.1093/intimm/dxp001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Important changes in acinar and ductal morphology and function, together with pronounced extracellular matrix (ECM) remodelling, are detectable in the labial salivary glands of Sjögren's syndrome (SS) patients. The objective of this work was to determine the effect of treatment with the anti-Ro/SSA auto-antibodies, characterizing SS, on the expression of fibulin-6, a member of the fibulins family of the ECM, in primary human salivary gland epithelial cell (SGEC) cultures established from biopsies of labial minor salivary glands obtained from healthy donors. The induction of cell detachment and anoikis in SGECs treated with anti-Ro/SSA auto-antibodies were also investigated. Changes in fibulin-6 mRNA expression were measured by semi-quantitative reverse transcriptase-PCR and real-time PCR. Fibulin-6 expression in cells treated with anti-Ro/SSA auto-antibodies was evaluated by flow cytometric analysis and confocal laser scanning microscopy. SGECs undergoing death by anoikis were identified and quantified using Calcein blue/YOPRO-1 dyes. Herein, we present the first evidence of fibulin-6 expression in SGEC that results distributed in the cytoplasm surrounding the inner side of the plasma membrane. Fibulin-6 was down-regulated in SGECs treated with anti-Ro/SSA auto-antibodies in which a marked cell detachment and a reduction of cell viability were observed. Notably, a reduction of fibulin-6 expression in SGECs treated with anti-Ro/SSA auto-antibodies corresponds to an increase of anoikis cell death. Our observations demonstrate a dysregulation of fibulin-6 in the pathological processes observed in SS and provide new evidence that disorganization of the ECM environment could damage the architecture and function of the salivary glands.
Collapse
Affiliation(s)
- Margherita Sisto
- Department of Human Anatomy and Histology, University of Bari Medical School, Bari, Italy.
| | | | | | | | | | | | | |
Collapse
|
36
|
|
37
|
Melenhorst WBWH, Mulder GM, Xi Q, Hoenderop JGJ, Kimura K, Eguchi S, van Goor H. Epidermal growth factor receptor signaling in the kidney: key roles in physiology and disease. Hypertension 2008; 52:987-93. [PMID: 18981331 DOI: 10.1161/hypertensionaha.108.113860] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Wynand B W H Melenhorst
- Department of Pathology and Medical Biology, University Medical Center Groningen, Groningen, The Netherlands.
| | | | | | | | | | | | | |
Collapse
|
38
|
Hyatt DC, Ceresa BP. Cellular localization of the activated EGFR determines its effect on cell growth in MDA-MB-468 cells. Exp Cell Res 2008; 314:3415-25. [PMID: 18817771 DOI: 10.1016/j.yexcr.2008.08.020] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2008] [Revised: 08/25/2008] [Accepted: 08/26/2008] [Indexed: 01/23/2023]
Abstract
The epidermal growth factor (EGF) receptor (EGFR) is a ubiquitously expressed receptor tyrosine kinase that regulates diverse cell functions that are dependent upon cell type, the presence of downstream effectors, and receptor density. In addition to activating biochemical pathways, ligand stimulation causes the EGFR to enter the cell via clathrin-coated pits. Endocytic trafficking influences receptor signaling by controlling the duration of EGFR phosphorylation and coordinating the receptor's association with downstream effectors. To better understand the individual contributions of cell surface and cytosolic EGFRs on cell physiology, we used EGF that was conjugated to 900 nm polystyrene beads (EGF-beads). EGF-beads can stimulate the EGFR and retain the activated receptor at the plasma membrane. In MDA-MB-468 cells, a breast cancer cell line that over-expresses the EGFR, only internalized, activated EGFRs stimulate caspase-3 and induce cell death. Conversely, signaling cascades triggered from activated EGFR retained at the cell surface inhibit caspase-3 and promote cell proliferation. Thus, through endocytosis, the activated EGFR can differentially regulate cell growth in MDA-MB-468 cells.
Collapse
Affiliation(s)
- Dustin C Hyatt
- Department of Cell Biology, University of Oklahoma Health Sciences Center, 940 Stanton L. Young Blvd, Oklahoma City, OK 73190, USA
| | | |
Collapse
|
39
|
Zeng F, Singh AB, Harris RC. The role of the EGF family of ligands and receptors in renal development, physiology and pathophysiology. Exp Cell Res 2008; 315:602-10. [PMID: 18761338 DOI: 10.1016/j.yexcr.2008.08.005] [Citation(s) in RCA: 112] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Accepted: 08/11/2008] [Indexed: 11/17/2022]
Abstract
Mammalian kidney expresses all of the members of the ErbB family of receptors and their respective ligands. Studies support a role for ErbB family receptor activation in kidney development and differentiation. Under physiologic conditions, EGFR activation appears to play an important role in the regulation of renal hemodynamics and electrolyte handling by the kidney, while in different pathophysiologic states, EGFR activation may mediate either beneficial or detrimental effects to the kidney. This article provides an overview of the expression profile of the ErbB family of ligands and receptors in the mammalian kidney and summarizes known physiological and pathophysiological roles of EGFR activation in the organ.
Collapse
Affiliation(s)
- Fenghua Zeng
- Department of Medicine, C-3121 Medical Center North, Vanderbilt University, Nashville, Tennessee 37232-4794, USA
| | | | | |
Collapse
|
40
|
Li C, Yang F, Xing X, Gao X, Deng X, Mackintosh C, Suttie JM. Role of heterotypic tissue interactions in deer pedicle and first antler formation-revealed via a membrane insertion approach. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2008; 310:267-77. [PMID: 18214837 DOI: 10.1002/jez.b.21210] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Heterotypic tissue interactions play an indispensable role in organ generation and regeneration. In contrast to the classic examples of tissue interactions prevailing in the formation of tetrapod limbs or pectoral fins that can only take place when the interactive tissues are in intimate contacts, the interactions in deer antler formation are novel in that the inducer and the responder are separated by a distance of 1-2 mm. This feature offers a unique opportunity to explore the mechanism underlying tissue interactions by permitting membrane insertion between the two interactive tissues. Four experiments were conducted in this study. The results showed that the impermeable membranes inhibited antler formation. In contrast, the permeable membrane (0.45 microm in pore size) substantially slowed pedicle growth and antler initiation but did not stop them. Interestingly, the impermeable membrane/sheath only slightly retarded antler elongation. Overall, our results demonstrate that interactions between the two interactive tissues, antlerogenic tissue and the overlying skin, are indispensable for first antler initiation and are achieved through diffusible molecules rather than direct physical contact. As the heterotypic tissue interactions are only required during antler initiation but not elongation, they must be transient in nature, and thus differ from those operating in limb/fin formation that can only be sustained by continuous interactions. A system in which organ development is achieved only through transient tissue interactions must be novel, if not completely unique. Understanding this system will undoubtedly enrich the knowledge in the field of tissue interactions and organogenesis.
Collapse
Affiliation(s)
- Chunyi Li
- AgResearch Invermay Agricultural Centre, Mosgiel, New Zealand.
| | | | | | | | | | | | | |
Collapse
|
41
|
|
42
|
Abstract
Growth factors were historically defined as molecules produced by the body to regulate cell growth and proliferation. After the identification of their receptors and the intracellular signaling machinery they activate, it is now clear that they are involved in the regulation of multiple processes essential for development and normal tissue function. The present review gives a brief overview of growth factor action. Receptor activation and signaling are discussed, highlighting the role of extracellular matrix interactions.
Collapse
Affiliation(s)
- Wolf Oehrl
- Institute of Molecular Oncology, Biomedical Sciences Research Centre Alexander Fleming, Vari, Greece
| | | |
Collapse
|