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Kim S, Lee D, Kim SE, Overholtzer M. Entosis: the core mechanism and crosstalk with other cell death programs. Exp Mol Med 2024; 56:870-876. [PMID: 38565900 PMCID: PMC11059358 DOI: 10.1038/s12276-024-01227-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Accepted: 01/30/2024] [Indexed: 04/04/2024] Open
Abstract
Cell death pathways play critical roles in organism development and homeostasis as well as in the pathogenesis of various diseases. While studies over the last decade have elucidated numerous different forms of cell death that can eliminate cells in various contexts, how certain mechanisms impact physiology is still not well understood. Moreover, recent studies have shown that multiple forms cell death can occur in a cell population, with different forms of death eliminating individual cells. Here, we aim to describe the known molecular mechanisms of entosis, a non-apoptotic cell engulfment process, and discuss signaling mechanisms that control its induction as well as its possible crosstalk with other cell death mechanisms.
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Affiliation(s)
- Sunghoon Kim
- Department of Biosystems and Biomedical Sciences, College of Health Sciences, Korea University, Seoul, Republic of Korea
- Department of Integrated Biomedical and Life Sciences, College of Health Sciences, Korea University, Seoul, Republic of Korea
- L-HOPE Program for Community-Based Total Learning Health Systems, Seoul, Republic of Korea
| | - Donghyuk Lee
- Department of Pharmacology and Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sung Eun Kim
- Department of Biosystems and Biomedical Sciences, College of Health Sciences, Korea University, Seoul, Republic of Korea.
- Department of Integrated Biomedical and Life Sciences, College of Health Sciences, Korea University, Seoul, Republic of Korea.
- L-HOPE Program for Community-Based Total Learning Health Systems, Seoul, Republic of Korea.
| | - Michael Overholtzer
- Cell Biology Program, Sloan Kettering Institute for Cancer Research, New York, NY, USA.
- Louis V. Gerstner, Jr. Graduate School of Biomedical Sciences, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
- BCMB Allied Program, Weill Cornell Medical College, New York, NY, USA.
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2
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Sobhi Amjad Z, Shojaeian A, Sadri Nahand J, Bayat M, Taghizadieh M, Rostamian M, Babaei F, Moghoofei M. Oncoviruses: Induction of cancer development and metastasis by increasing anoikis resistance. Heliyon 2023; 9:e22598. [PMID: 38144298 PMCID: PMC10746446 DOI: 10.1016/j.heliyon.2023.e22598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 11/07/2023] [Accepted: 11/15/2023] [Indexed: 12/26/2023] Open
Abstract
The phenomenon of cell death is a vital aspect in the regulation of aberrant cells such as cancer cells. Anoikis is a kind of cell death that occurs when cells get separated from the extracellular matrix. Some cancer cells can inhibit anoikis in order to progress metastasis. One of the key variables that might be implicated in anoikis resistance (AR) is viral infections. The most important viruses involved in this process are Epstein-Barr virus, human papillomavirus, hepatitis B virus, human herpes virus 8, human T-cell lymphotropic virus type 1, and hepatitis C virus. A better understanding of how carcinogenic viruses suppress anoikis might be helpful in developing an effective treatment for virus-associated cancers. In the current study, we review the role of the mentioned viruses and their gene products in anoikis inhibition.
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Affiliation(s)
- Zahra Sobhi Amjad
- Department of Microbiology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Ali Shojaeian
- Research Center for Molecular Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Javid Sadri Nahand
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mobina Bayat
- Infectious and Tropical Diseases Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Taghizadieh
- Department of Pathology, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mosayeb Rostamian
- Nosocomial Infections Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Farhad Babaei
- Department of Microbiology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohsen Moghoofei
- Department of Microbiology, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
- Infectious Diseases Research Center, Health Research Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
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3
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Neuendorf HM, Simmons JL, Boyle GM. Therapeutic targeting of anoikis resistance in cutaneous melanoma metastasis. Front Cell Dev Biol 2023; 11:1183328. [PMID: 37181747 PMCID: PMC10169659 DOI: 10.3389/fcell.2023.1183328] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 04/14/2023] [Indexed: 05/16/2023] Open
Abstract
The acquisition of resistance to anoikis, the cell death induced by loss of adhesion to the extracellular matrix, is an absolute requirement for the survival of disseminating and circulating tumour cells (CTCs), and for the seeding of metastatic lesions. In melanoma, a range of intracellular signalling cascades have been identified as potential drivers of anoikis resistance, however a full understanding of the process is yet to be attained. Mechanisms of anoikis resistance pose an attractive target for the therapeutic treatment of disseminating and circulating melanoma cells. This review explores the range of small molecule, peptide and antibody inhibitors targeting molecules involved in anoikis resistance in melanoma, and may be repurposed to prevent metastatic melanoma prior to its initiation, potentially improving the prognosis for patients.
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Affiliation(s)
- Hannah M. Neuendorf
- Cancer Drug Mechanisms Group, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
- School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, Brisbane, QLD, Australia
| | - Jacinta L. Simmons
- Cancer Drug Mechanisms Group, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
- School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, Brisbane, QLD, Australia
- School of Biomedical Sciences, Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia
| | - Glen M. Boyle
- Cancer Drug Mechanisms Group, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
- School of Biomedical Sciences, Faculty of Health, Queensland University of Technology, Brisbane, QLD, Australia
- School of Biomedical Sciences, Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia
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4
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Beauvais DM, Nelson SE, Adams KM, Stueven NA, Jung O, Rapraeger AC. Plasma membrane proteoglycans syndecan-2 and syndecan-4 engage with EGFR and RON kinase to sustain carcinoma cell cycle progression. J Biol Chem 2022; 298:102029. [PMID: 35569509 PMCID: PMC9190016 DOI: 10.1016/j.jbc.2022.102029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 04/18/2022] [Accepted: 04/20/2022] [Indexed: 12/20/2022] Open
Abstract
Epidermal growth factor receptor (EGFR) is a causal factor in carcinoma, yet many carcinoma patients are resistant to EGFR inhibitors. Potential insight into this resistance stems from prior work that showed EGFR in normal epithelial cells docks to the extracellular domain of the plasma membrane proteoglycan syndecan-4 (Sdc4) engaged with α3β1 and α6β4 integrins. We now report that this receptor complex is modified by the recruitment of syndecan-2 (Sdc2), the Recepteur d'Origine Nantais (RON) tyrosine kinase, and the cellular signaling mediator Abelson murine leukemia viral oncogene homolog 1 (ABL1) in triple-negative breast carcinoma and head and neck squamous cell carcinoma, where it contributes to EGFR kinase-independent proliferation. Treatment with a peptide mimetic of the EGFR docking site in the extracellular domain of Sdc4 (called SSTNEGFR) disrupts the entire complex and causes a rapid, global arrest of the cell cycle. Normal epithelial cells do not recruit these additional receptors to the adhesion mechanism and are not arrested by SSTNEGFR. Although EGFR docking with Sdc4 in the tumor cells is required, cell cycle progression does not depend on EGFR kinase. Instead, progression depends on RON kinase, activated by its incorporation into the complex. RON activates ABL1, which suppresses p38 mitogen-activated protein kinase and prevents a p38-mediated signal that would otherwise arrest the cell cycle. These findings add to the growing list of receptor tyrosine kinases that support tumorigenesis when activated by their association with syndecans at sites of matrix adhesion and identify new potential targets for cancer therapy.
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Affiliation(s)
- DeannaLee M Beauvais
- Department of Human Oncology, University of Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Scott E Nelson
- Department of Human Oncology, University of Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Kristin M Adams
- Department of Human Oncology, University of Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Noah A Stueven
- Department of Human Oncology, University of Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Oisun Jung
- Department of Human Oncology, University of Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, Madison, Wisconsin, USA
| | - Alan C Rapraeger
- Department of Human Oncology, University of Wisconsin Carbone Cancer Center, University of Wisconsin-Madison, Madison, Wisconsin, USA.
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5
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Liao M, Qin R, Huang W, Zhu HP, Peng F, Han B, Liu B. Targeting regulated cell death (RCD) with small-molecule compounds in triple-negative breast cancer: a revisited perspective from molecular mechanisms to targeted therapies. J Hematol Oncol 2022; 15:44. [PMID: 35414025 PMCID: PMC9006445 DOI: 10.1186/s13045-022-01260-0] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 03/28/2022] [Indexed: 02/08/2023] Open
Abstract
Triple-negative breast cancer (TNBC) is a subtype of human breast cancer with one of the worst prognoses, with no targeted therapeutic strategies currently available. Regulated cell death (RCD), also known as programmed cell death (PCD), has been widely reported to have numerous links to the progression and therapy of many types of human cancer. Of note, RCD can be divided into numerous different subroutines, including autophagy-dependent cell death, apoptosis, mitotic catastrophe, necroptosis, ferroptosis, pyroptosis and anoikis. More recently, targeting the subroutines of RCD with small-molecule compounds has been emerging as a promising therapeutic strategy, which has rapidly progressed in the treatment of TNBC. Therefore, in this review, we focus on summarizing the molecular mechanisms of the above-mentioned seven major RCD subroutines related to TNBC and the latest progress of small-molecule compounds targeting different RCD subroutines. Moreover, we further discuss the combined strategies of one drug (e.g., narciclasine) or more drugs (e.g., torin-1 combined with chloroquine) to achieve the therapeutic potential on TNBC by regulating RCD subroutines. More importantly, we demonstrate several small-molecule compounds (e.g., ONC201 and NCT03733119) by targeting the subroutines of RCD in TNBC clinical trials. Taken together, these findings will provide a clue on illuminating more actionable low-hanging-fruit druggable targets and candidate small-molecule drugs for potential RCD-related TNBC therapies.
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Affiliation(s)
- Minru Liao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Rui Qin
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Wei Huang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China
| | - Hong-Ping Zhu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.,Antibiotics Research and Re-Evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, China
| | - Fu Peng
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources, Hospital of Chengdu University of Traditional Chinese Medicine, School of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, China.
| | - Bo Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, and West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
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6
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Fu C, Arora A, Engl W, Sheetz M, Viasnoff V. Cooperative regulation of adherens junction expansion through Epidermal Growth Factor Receptor (EGFR) activation. J Cell Sci 2022; 135:274477. [DOI: 10.1242/jcs.258929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 01/12/2022] [Indexed: 11/20/2022] Open
Abstract
The mechanisms controlling the dynamics of expansion of adherens junctions are significantly less understood than those controlling their static properties. Here, we report that for suspended cell aggregates, the time to form a new junction between two cells speeds up with the number of junctions that the cells are already engaged in. Upon junction formation, the activation of the Epidermal Growth Factor Receptor (EGFR) distally affects the actin turnover dynamics of the cell-free cortex. The “primed” actin cortex results in a faster expansion of the subsequent new junctions. In such aggregates, we show that this mechanism results in a cooperative acceleration of the junction expansion dynamics (kinetype) but leaves the cell contractility, and hence the final junction size (phenotype), unaltered.
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Affiliation(s)
- Chaoyu Fu
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Aditya Arora
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Wilfried Engl
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
| | - Michael Sheetz
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
- Biochemistry and Molecular Biology Department, University of Texas Medical Branch, Galveston, Texas, USA
| | - Virgile Viasnoff
- Mechanobiology Institute, National University of Singapore, Singapore, Singapore
- CNRS Biomechanics of Cell Contacts, Singapore, Singapore
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore
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7
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Sharma A, Elble RC. From Orai to E-Cadherin: Subversion of Calcium Trafficking in Cancer to Drive Proliferation, Anoikis-Resistance, and Metastasis. Biomedicines 2020; 8:biomedicines8060169. [PMID: 32575848 PMCID: PMC7345168 DOI: 10.3390/biomedicines8060169] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/17/2020] [Accepted: 06/19/2020] [Indexed: 12/23/2022] Open
Abstract
The common currency of epithelial differentiation and homeostasis is calcium, stored primarily in the endoplasmic reticulum, rationed according to need, and replenished from the extracellular milieu via store-operated calcium entry (SOCE). This currency is disbursed by the IP3 receptor in response to diverse extracellular signals. The rate of release is governed by regulators of proliferation, autophagy, survival, and programmed cell death, the strength of the signal leading to different outcomes. Intracellular calcium acts chiefly through intermediates such as calmodulin that regulates growth factor receptors such as epidermal growth factor receptor (EGFR), actin polymerization, and adherens junction assembly and maintenance. Here we review this machinery and its role in differentiation, then consider how cancer cells subvert it to license proliferation, resist anoikis, and enable metastasis, either by modulating the level of intracellular calcium or its downstream targets or effectors such as EGFR, E-cadherin, IQGAP1, TMEM16A, CLCA2, and TRPA1. Implications are considered for the roles of E-cadherin and growth factor receptors in circulating tumor cells and metastasis. The discovery of novel, cell type-specific modulators and effectors of calcium signaling offers new possibilities for cancer chemotherapy.
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Affiliation(s)
- Aarushi Sharma
- Department of Pharmacology, Southern Illinois University School of Medicine, Springfield, IL 62702, USA;
| | - Randolph C. Elble
- Department of Pharmacology, Southern Illinois University School of Medicine, Springfield, IL 62702, USA;
- Department of Pharmacology and Simmons Cancer Institute, Southern Illinois University School of Medicine, Springfield, IL 62702, USA
- Correspondence: ; Tel.: +217-545-7381
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8
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Tuguzbaeva G, Yue E, Chen X, He L, Li X, Ju J, Qin Y, Pavlov V, Lu Y, Jia W, Bai Y, Niu Y, Yang B. PEP06 polypeptide 30 is a novel cluster-dissociating agent inhibiting α v integrin/FAK/Src signaling in oral squamous cell carcinoma cells. Acta Pharm Sin B 2019; 9:1163-1173. [PMID: 31867162 PMCID: PMC6900557 DOI: 10.1016/j.apsb.2019.10.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 10/09/2019] [Accepted: 10/11/2019] [Indexed: 12/30/2022] Open
Abstract
Collectively migrating tumor cells have been recently implicated in enhanced metastasis of epithelial malignancies. In oral squamous cell carcinoma (OSCC), αv integrin is a crucial mediator of multicellular clustering and collective movement in vitro; however, its contribution to metastatic spread remains to be addressed. According to the emerging therapeutic concept, dissociation of tumor clusters into single cells could significantly suppress metastasis-seeding ability of carcinomas. This study aimed to investigate the anti-OSCC potential of novel endostatin-derived polypeptide PEP06 as a cluster-dissociating therapeutic agent in vitro. Firstly, we found marked enrichment of αv integrin in collectively invading multicellular clusters in human OSCCs. Our study revealed that metastatic progression of OSCC was associated with augmented immunostaining of αv integrin in cancerous lesions. Following PEP06 treatment, cell clustering on fibronectin, migration, multicellular aggregation, anchorage-independent survival and colony formation of OSCC were significantly inhibited. Moreover, PEP06 suppressed αv integrin/FAK/Src signaling in OSCC cells. PEP06-induced loss of active Src and E-cadherin from cell–cell contacts contributed to diminished collective migration of OSCC in vitro. Overall, these results suggest that PEP06 polypeptide 30 inhibiting αv integrin/FAK/Src signaling and disrupting E-cadherin-based intercellular junctions possesses anti-metastatic potential in OSCC by acting as a cluster-dissociating therapeutic agent.
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9
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Sun Y, Lei B, Huang Q. SOX18 Affects Cell Viability, Migration, Invasiveness, and Apoptosis in Hepatocellular Carcinoma (HCC) Cells by Participating in Epithelial-to-Mesenchymal Transition (EMT) Progression and Adenosine Monophosphate Activated Protein Kinase (AMPK)/Mammalian Target of Rapamycin (mTOR). Med Sci Monit 2019; 25:6244-6254. [PMID: 31427562 PMCID: PMC6713035 DOI: 10.12659/msm.915729] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Background Hepatocellular carcinoma (HCC) is one of the most common malignancies around the world. It has been verified that the expression of SOX18 is correlated to poor clinical prognosis in patients with ovarian cancer, non-small cell lung cancer, or breast invasive ductal carcinoma. However, the expression pattern and biological function of SOX18 in HCC tissues remains unclear. In this study, we set out to investigate the associated biological function and potential molecular mechanism of the SOX18 gene in HCC cells. Material/Methods The mRNA and protein expression levels of experimental related genes were detected by real-time polymerase chain reaction and western blotting assay, respectively. The MTT method was used to assess cell viability, and cell apoptosis analysis was performed by means of FACScan flow cytometry. Wound-healing assay and Transwell analysis were performed to evaluate the ability of cell migration and invasiveness, respectively. Results SOX18 was highly expressed in various HCC cell lines. In addition, SOX18 promoted cell viability, migration, and invasion and simultaneously induce cell apoptosis. SOX18 promoted epithelial-to-mesenchymal transition (EMT) progression, and SOX18 downregulation activated the autophagy signaling pathway AMPK/mTOR in HCC cells. Conclusions SOX18 downregulation in HCC cells suppressed cell viability and metastasis, induced cell apoptosis and hindered the occurrence and progression of tumor cells by participating in the EMT process and regulating the autophagy signaling pathway AMPK/mTOR.
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Affiliation(s)
- Yanni Sun
- Department of Hepatology, Yantai City Hospital for Infectious Diseases, Yantai, Shandong, China (mainland)
| | - Bo Lei
- Department of Hepatology, Yantai City Hospital for Infectious Diseases, Yantai, Shandong, China (mainland)
| | - Qingxian Huang
- Department of Hepatobiliary Surgery, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, Shandong, China (mainland)
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10
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Sun Z, Velázquez-Quesada I, Murdamoothoo D, Ahowesso C, Yilmaz A, Spenlé C, Averous G, Erne W, Oberndorfer F, Oszwald A, Kain R, Bourdon C, Mangin P, Deligne C, Midwood K, Abou-Faycal C, Lefebvre O, Klein A, van der Heyden M, Chenard MP, Christofori G, Mathelin C, Loustau T, Hussenet T, Orend G. Tenascin-C increases lung metastasis by impacting blood vessel invasions. Matrix Biol 2019; 83:26-47. [PMID: 31288084 DOI: 10.1016/j.matbio.2019.07.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/30/2019] [Accepted: 07/02/2019] [Indexed: 12/12/2022]
Abstract
Metastasis is a major cause of death in cancer patients. The extracellular matrix molecule tenascin-C is a known promoter of metastasis, however the underlying mechanisms are not well understood. To further analyze the impact of tenascin-C on cancer progression we generated MMTV-NeuNT mice that develop spontaneous mammary tumors, on a tenascin-C knockout background. We also developed a syngeneic orthotopic model in which tumor cells derived from a MMTV-NeuNT tumor. Tumor cells were transfected with control shRNA or with shRNA to knockdown tenascin-C expression and, were grafted into the mammary gland of immune competent, wildtype or tenascin-C knockout mice. We show that stromal-derived tenascin-C increases metastasis by reducing apoptosis and inducing the cellular plasticity of cancer cells located in pulmonary blood vessels invasions (BVI), before extravasation. We characterized BVI as organized structures of tightly packed aggregates of proliferating tumor cells with epithelial characteristics, surrounded by Fsp1+ cells, internally located platelets and, a luminal monolayer of endothelial cells. We found extracellular matrix, in particular, tenascin-C, between the stromal cells and the tumor cell cluster. In mice lacking stromal-derived tenascin-C, the organization of pulmonary BVI was significantly affected, revealing novel functions of host-derived tenascin-C in supporting the integrity of the endothelial cell coat, increasing platelet abundance, tumor cell survival, epithelial plasticity, thereby promoting overall lung metastasis. Many effects of tenascin-C observed in BVI including enhancement of cellular plasticity, survival and migration, could be explained by activation of TGF-β signaling. Finally, in several human cancers, we also observed BVI to be surrounded by an endothelial monolayer and to express tenascin-C. Expression of tenascin-C is specific to BVI and is not observed in lymphatic vascular invasions frequent in breast cancer, which lack an endothelial lining. Given that BVI have prognostic significance for many tumor types, such as shorter cancer patient survival, increased metastasis, vessel occlusion, and organ failure, our data revealing a novel mechanism by which stromal tenascin-C promotes metastasis in human cancer, may have potential for diagnosis and therapy.
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Affiliation(s)
- Zhen Sun
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Inés Velázquez-Quesada
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Devadarssen Murdamoothoo
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Constance Ahowesso
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Alev Yilmaz
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Caroline Spenlé
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Gerlinde Averous
- Department of Pathology, University Hospital Strasbourg, Strasbourg, France
| | - William Erne
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | | | - Andre Oszwald
- Department of Pathology, Medical University of Vienna (MUW), Vienna, Austria
| | - Renate Kain
- Department of Pathology, Medical University of Vienna (MUW), Vienna, Austria
| | | | - Pierre Mangin
- Etablissement Français du Sang, INSERM U949, Strasbourg, France
| | - Claire Deligne
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | - Kim Midwood
- Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
| | - Chérine Abou-Faycal
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Olivier Lefebvre
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Annick Klein
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Michael van der Heyden
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | | | | | - Carole Mathelin
- Department of breast diseases and surgery, Strasbourg University Hospital, Strasbourg, France
| | - Thomas Loustau
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Thomas Hussenet
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Gertraud Orend
- INSERM U1109 - MN3T, The Microenvironmental Niche in Tumorigenesis and Targeted Therapy and, the Tumor Microenvironment group, France; Université de Strasbourg, Strasbourg, France; LabEx Medalis, Université de Strasbourg, France; Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France.
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11
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Loss of cell-matrix contact increases hypoxia-inducible factor-dependent transcriptional activity in glioma cells. Biochem Biophys Res Commun 2019; 515:77-84. [PMID: 31128911 DOI: 10.1016/j.bbrc.2019.05.115] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 05/16/2019] [Indexed: 01/01/2023]
Abstract
In a variety of malignomas, the acquisition of a mesenchymal phenotype has been linked with anchorage-independent growth and invasiveness. To some extent, glioma cells are able to survive a loss of cell-matrix contact. We here describe that non-adherent culture of glioma cells was accompanied by an increase in hypoxia-inducible factor (HIF)-dependent, but not β-catenin/TCF-induced transcription. Levels of reactive oxygen species decreased in suspension and knockdown of HIF-1α enhanced cell death following detachment. By promoting the adaptation to non-adherent conditions, mechanisms driven by HIF-1α may considerably contribute to the biology and aggressiveness of glioblastoma.
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12
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Jolly MK, Somarelli JA, Sheth M, Biddle A, Tripathi SC, Armstrong AJ, Hanash SM, Bapat SA, Rangarajan A, Levine H. Hybrid epithelial/mesenchymal phenotypes promote metastasis and therapy resistance across carcinomas. Pharmacol Ther 2018; 194:161-184. [PMID: 30268772 DOI: 10.1016/j.pharmthera.2018.09.007] [Citation(s) in RCA: 202] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cancer metastasis and therapy resistance are the major unsolved clinical challenges, and account for nearly all cancer-related deaths. Both metastasis and therapy resistance are fueled by epithelial plasticity, the reversible phenotypic transitions between epithelial and mesenchymal phenotypes, including epithelial-mesenchymal transition (EMT) and mesenchymal-epithelial transition (MET). EMT and MET have been largely considered as binary processes, where cells detach from the primary tumor as individual units with many, if not all, traits of a mesenchymal cell (EMT) and then convert back to being epithelial (MET). However, recent studies have demonstrated that cells can metastasize in ways alternative to traditional EMT paradigm; for example, they can detach as clusters, and/or occupy one or more stable hybrid epithelial/mesenchymal (E/M) phenotypes that can be the end point of a transition. Such hybrid E/M cells can integrate various epithelial and mesenchymal traits and markers, facilitating collective cell migration. Furthermore, these hybrid E/M cells may possess higher tumor-initiation and metastatic potential as compared to cells on either end of the EMT spectrum. Here, we review in silico, in vitro, in vivo and clinical evidence for the existence of one or more hybrid E/M phenotype(s) in multiple carcinomas, and discuss their implications in tumor-initiation, tumor relapse, therapy resistance, and metastasis. Together, these studies drive the emerging notion that cells in a hybrid E/M phenotype may occupy 'metastatic sweet spot' in multiple subtypes of carcinomas, and pathways linked to this (these) hybrid E/M state(s) may be relevant as prognostic biomarkers as well as a promising therapeutic targets.
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Affiliation(s)
- Mohit Kumar Jolly
- Center for Theoretical Biological Physics, Rice University, Houston, TX, USA.
| | - Jason A Somarelli
- Duke Cancer Institute and Department of Medicine, Duke University Medical Center, Durham, USA
| | - Maya Sheth
- Duke Cancer Institute and Department of Medicine, Duke University Medical Center, Durham, USA
| | - Adrian Biddle
- Blizard Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - Satyendra C Tripathi
- Department of Clinical Cancer Prevention, UT MD Anderson Cancer Center, Houston, USA
| | - Andrew J Armstrong
- Duke Cancer Institute and Department of Medicine, Duke University Medical Center, Durham, USA
| | - Samir M Hanash
- Department of Clinical Cancer Prevention, UT MD Anderson Cancer Center, Houston, USA
| | - Sharmila A Bapat
- National Center for Cell Science, Savitribai Phule Pune University Campus, Ganeshkhind, Pune, India
| | - Annapoorni Rangarajan
- Department of Molecular Reproduction, Development & Genetics, Indian Institute of Science, Bangalore, India
| | - Herbert Levine
- Center for Theoretical Biological Physics, Rice University, Houston, TX, USA.
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13
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Capel V, Vllasaliu D, Watts P, Clarke PA, Luxton D, Grabowska AM, Mantovani G, Stolnik S. Water-soluble substituted chitosan derivatives as technology platform for inhalation delivery of siRNA. Drug Deliv 2018; 25:644-653. [PMID: 29493294 PMCID: PMC6058492 DOI: 10.1080/10717544.2018.1440668] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Despite research efforts full potential of siRNA-based therapeutics has not yet been fully realized due to a need for suitable, effective delivery formulations. Here, we examine a potential of a new class of water-soluble chitosans as siRNA platform for pulmonary delivery. The system is based on piperazine-substituted chitosans, a material designed to integrate established, safe application of chitosan for mucosal administration with novel properties: the piperazine-substituted chitosans are freely water-soluble at physiological pH, possess low cytotoxicity (no significant reduction in cell viability up to 0.1 mg/ml), and provide efficient incorporation of siRNA into sub-300 nm colloidal complexes (at relatively low polymer/siRNA ratio of 5:1). In vitro, the complexes achieved silencing of a model gene at a level of 40–80%, when tested in a panel of lung epithelial cells. Considering the formulation ‘developability’, there were no significant changes in the complexes’ size and integrity on aerosolisation by microsprayer (PenCentury™) device. Following intratracheal aerolisation, the complexes deposited throughout the lung, although relatively inhomogeneously, as judged from IVIS imaging of the isolated mouse lung (visualizing DY647-siRNA). In vivo data illustrate absence of adverse effects on repeated administration of complexes and significant tumor reduction in atopical lung cancer model in mice. Altogether, the data illustrates potential of substituted chitosan derivatives to be utilized as a safe system for inhalation delivery of siRNA.
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Affiliation(s)
- Victoria Capel
- a Division of Molecular Therapeutics and Formulation, School of Pharmacy , University of Nottingham, University Park , Nottingham , United Kingdom
| | - Driton Vllasaliu
- a Division of Molecular Therapeutics and Formulation, School of Pharmacy , University of Nottingham, University Park , Nottingham , United Kingdom
| | - Peter Watts
- b Archimedes Development Limited, Albert Einstein Centre, Nottingham Science and Technology Park , University Boulevard , Nottingham , United Kingdom
| | - Philip A Clarke
- c Division of Cancer and Stem Cells, School of Medicine , University of Nottingham , Nottingham , United Kingdom
| | - Dominic Luxton
- c Division of Cancer and Stem Cells, School of Medicine , University of Nottingham , Nottingham , United Kingdom
| | - Anna M Grabowska
- c Division of Cancer and Stem Cells, School of Medicine , University of Nottingham , Nottingham , United Kingdom
| | - Giuseppe Mantovani
- a Division of Molecular Therapeutics and Formulation, School of Pharmacy , University of Nottingham, University Park , Nottingham , United Kingdom
| | - Snjezana Stolnik
- a Division of Molecular Therapeutics and Formulation, School of Pharmacy , University of Nottingham, University Park , Nottingham , United Kingdom
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14
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Brown CW, Amante JJ, Mercurio AM. Cell clustering mediated by the adhesion protein PVRL4 is necessary for α6β4 integrin-promoted ferroptosis resistance in matrix-detached cells. J Biol Chem 2018; 293:12741-12748. [PMID: 29934307 PMCID: PMC6102132 DOI: 10.1074/jbc.ra118.003017] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 06/18/2018] [Indexed: 11/06/2022] Open
Abstract
Ferroptosis is an iron-dependent form of programmed cell death characterized by the accumulation of lipid-targeting reactive oxygen species that kill cells by damaging their plasma membrane. The lipid repair enzyme GSH peroxidase 4 (GPX4) protects against this oxidative damage and enables cells to resist ferroptosis. Recent work has revealed that matrix-detached carcinoma cells can be susceptible to ferroptosis and that they can evade this fate through the signaling properties of the α6β4 integrin, which sustains GPX4 expression. Although these findings on ferroptosis are provocative, they differ from those in previous studies indicating that matrix-detached cells are prone to apoptosis via a process referred to as anoikis. In an effort to reconcile these discrepant findings, here we observed that matrix-detached epithelial and carcinoma cells cluster spontaneously via a mechanism that involves the cell adhesion protein PVRL4 (also known as Nectin-4). We found that this clustering process allows these cells to survive by stimulating a PVRL4/α6β4/Src signaling axis that sustains GPX4 expression and buffers against lipid peroxidation. In the absence of α6β4, PVRL4-mediated clustering induced an increase in lipid peroxidation that was sufficient for triggering ferroptosis. When the clustering was inhibited, single cells did not exhibit a significant increase in lipid peroxidation in the absence of α6β4, and they were more susceptible to apoptosis than to ferroptosis. These results indicate that ferroptosis induction depends on cell clustering in matrix-detached cells that lack α6β4 and imply that the fate of matrix-detached cells can be determined by the state of their cell-cell interactions.
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Affiliation(s)
- Caitlin W Brown
- Department of Molecular, Cell, and Cancer Biology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - John J Amante
- Department of Molecular, Cell, and Cancer Biology, University of Massachusetts Medical School, Worcester, Massachusetts 01605
| | - Arthur M Mercurio
- Department of Molecular, Cell, and Cancer Biology, University of Massachusetts Medical School, Worcester, Massachusetts 01605.
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15
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Ma Y, Xu Y, Li L. SPARCL1 suppresses the proliferation and migration of human ovarian cancer cells via the MEK/ERK signaling. Exp Ther Med 2018; 16:3195-3201. [PMID: 30233672 DOI: 10.3892/etm.2018.6575] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 06/04/2018] [Indexed: 12/24/2022] Open
Abstract
Ovarian cancer is the most lethal gynecological malignancy worldwide and is one of the five leading causes of cancer-associated mortality in women. There is an urgent requirement to obtain a greater understanding of the molecular mechanism underlying ovarian cancer progression in order to identify novel drug targets and biomarkers. Secreted protein acidic and rich in cysteine-like protein 1 (SPARCL1) has been suggested as a candidate tumor suppressor in various types of human cancers. However, the potential role of SPARCL1 for ovarian cancer has not yet been clearly established. In the present study, lower protein expression levels of SPARCL1 were detected in ovarian cancer tissues when compared with adjacent normal tissues. Overexpression of SPARCL1 significantly suppressed the proliferation and migration of cells from the ovarian cancer cell line SKOV-3, whereas knockdown of SPARCL1 significantly increased cell growth and migration. Furthermore, the results revealed that SPARCL1 overexpression significantly suppressed the activation of the mitogen-activated protein kinase kinase (MEK)/extracellular signal-related kinase (ERK) signaling pathway. Collectively, these results indicated that SPARCL1 may suppress the proliferation and migration of ovarian cancer cells by downregulating signaling via the MEK/ERK pathway.
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Affiliation(s)
- Yan Ma
- Department of Gynecology, Third Affiliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
| | - Yuan Xu
- Department of Gynecology, Third Affiliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
| | - Li Li
- Department of Gynecology, Third Affiliated Hospital, Xinjiang Medical University, Urumqi, Xinjiang 830011, P.R. China
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16
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Bao X, Shi J, Xie F, Liu Z, Yu J, Chen W, Zhang Z, Xu Q. Proteolytic Release of the p75NTR Intracellular Domain by ADAM10 Promotes Metastasis and Resistance to Anoikis. Cancer Res 2018; 78:2262-2276. [DOI: 10.1158/0008-5472.can-17-2789] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 12/22/2017] [Accepted: 01/30/2018] [Indexed: 11/16/2022]
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17
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Zhang Y, Kwok JSL, Choi PW, Liu M, Yang J, Singh M, Ng SK, Welch WR, Muto MG, Tsui SK, Sugrue SP, Berkowitz RS, Ng SW. Pinin interacts with C-terminal binding proteins for RNA alternative splicing and epithelial cell identity of human ovarian cancer cells. Oncotarget 2017; 7:11397-411. [PMID: 26871283 PMCID: PMC4905481 DOI: 10.18632/oncotarget.7242] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 01/24/2016] [Indexed: 11/25/2022] Open
Abstract
Unlike many other human solid tumors, ovarian tumors express many epithelial markers at a high level for cell growth and local invasion. The phosphoprotein Pinin plays a key role in epithelial cell identity. We showed that clinical ovarian tumors and ovarian cancer cell lines express a high level of Pinin when compared with normal ovarian tissues and immortalized normal ovarian surface epithelial cell lines. Pinin co-localized and physically interacted with transcriptional corepressor C-terminal binding proteins, CtBP1 and CtBP2, in the nuclei of cancer cells. Knockdown of Pinin in ovarian cancer cells resulted in specific reduction of CtBP1 protein expression, cell adhesion, anchorage-independent growth, and increased drug sensitivity. Whole transcriptomic comparison of next-generation RNA sequencing data between control ovarian cancer cell lines and cancer cell lines with respective knockdown of Pinin, CtBP1, and CtBP2 expression also showed reduced expression of CtBP1 mRNA in the Pinin knockdown cell lines. The Pinin knockdown cell lines shared significant overlap of differentially expressed genes and RNA splicing aberrations with CtBP1 knockdown and in a lesser degree with CtBP2 knockdown cancer cells. Hence, Pinin and CtBP are oncotargets that closely interact with each other to regulate transcription and pre-mRNA alternative splicing and promote cell adhesion and other epithelial characteristics of ovarian cancer cells.
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Affiliation(s)
- Yanli Zhang
- Laboratory of Gynecologic Oncology, Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School, Boston, MA, USA
| | - Jamie Sui-Lam Kwok
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Pui-Wah Choi
- Laboratory of Gynecologic Oncology, Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School, Boston, MA, USA
| | - Minghua Liu
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Junzheng Yang
- Laboratory of Gynecologic Oncology, Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School, Boston, MA, USA
| | - Margit Singh
- Laboratory of Gynecologic Oncology, Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School, Boston, MA, USA
| | - Shu-Kay Ng
- School of Medicine and Menzies Health Institute Queensland, Griffith University, Meadowbrook, Australia
| | - William R Welch
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Michael G Muto
- Laboratory of Gynecologic Oncology, Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School, Boston, MA, USA
| | - Stephen Kw Tsui
- School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong
| | - Stephen P Sugrue
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Ross S Berkowitz
- Laboratory of Gynecologic Oncology, Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School, Boston, MA, USA
| | - Shu-Wing Ng
- Laboratory of Gynecologic Oncology, Division of Gynecologic Oncology, Department of Obstetrics, Gynecology and Reproductive Biology, Harvard Medical School, Boston, MA, USA
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18
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Wierzbicki M, Jaworski S, Kutwin M, Grodzik M, Strojny B, Kurantowicz N, Zdunek K, Chodun R, Chwalibog A, Sawosz E. Diamond, graphite, and graphene oxide nanoparticles decrease migration and invasiveness in glioblastoma cell lines by impairing extracellular adhesion. Int J Nanomedicine 2017; 12:7241-7254. [PMID: 29042773 PMCID: PMC5634373 DOI: 10.2147/ijn.s146193] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
The highly invasive nature of glioblastoma is one of the most significant problems regarding the treatment of this tumor. Diamond nanoparticles (ND), graphite nanoparticles (NG), and graphene oxide nanoplatelets (nGO) have been explored for their biomedical applications, especially for drug delivery. The objective of this research was to assess changes in the adhesion, migration, and invasiveness of two glioblastoma cell lines, U87 and U118, after ND, NG, and nGO treatment. All treatments affected the cell surface structure, adhesion-dependent EGFR/AKT/mTOR, and β-catenin signaling pathways, decreasing the migration and invasiveness of both glioblastoma cell lines. The examined nanoparticles did not show strong toxicity but effectively deregulated cell migration. ND was effectively taken up by cells, whereas nGO and NG strongly interacted with the cell surface. These results indicate that nanoparticles could be used in biomedical applications as a low toxicity active compound for glioblastoma treatment.
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Affiliation(s)
| | | | - Marta Kutwin
- Division of Nanobiotechnology, Warsaw University of Life Science
| | - Marta Grodzik
- Division of Nanobiotechnology, Warsaw University of Life Science
| | - Barbara Strojny
- Division of Nanobiotechnology, Warsaw University of Life Science
| | | | - Krzysztof Zdunek
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
| | - Rafał Chodun
- Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, Poland
| | - André Chwalibog
- Department of Veterinary and Animal Sciences, University of Copenhagen, Frederiksberg, Denmark
| | - Ewa Sawosz
- Division of Nanobiotechnology, Warsaw University of Life Science
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19
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Kakei Y, Teraoka S, Akashi M, Hasegawa T, Komori T. Changes in cell junctions induced by inhibition of epidermal growth factor receptor in oral squamous cell carcinoma cells. Exp Ther Med 2017; 14:953-960. [PMID: 28810546 PMCID: PMC5525654 DOI: 10.3892/etm.2017.4606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 03/17/2017] [Indexed: 11/29/2022] Open
Abstract
The benefits of epidermal growth factor receptor (EGFR) targeting in the treatment of head and neck cancer, have been documented. However, a minority of patients with head and neck cancer are unresponsive to EGFR targeting therapies. The present study evaluated the effects and limitations of an EGFR inhibitor on oral squamous cell carcinoma cells, particularly on cell-cell junctions mediated by epithelial (E)-cadherin. HSC-3 oral squamous cell carcinoma cells were treated with the EGFR inhibitor, AG1478 (0, 0.5, 2, 10 and 50 µM), and the effects of EGFR inhibition in HSC-3 cells were evaluated by wound healing assays, E-cadherin immunostaining and measurement of transepithelial electrical resistance in vitro. It was observed that treatment of oral squamous cell carcinoma cells with AG1478 suppressed cell motility, altered cell morphology and increased the number of cell-cell junctions compared with untreated control cells. Knockdown of EGFR induced a similar phenotype to that observed by the inhibition of EGFR. Furthermore, in oral squamous cell carcinoma cells treated with high-dose EGFR inhibitor (50 µM), the small number of cells that survived formed cell-cell junctions that were positive for E-cadherin expression. In cells treated with low concentrations of EGFR inhibitor (2 µM), recovery of epithelial properties was observed. The retention of E-cadherin expression in cells that survived high-dose EGFR inhibitor treatment may be a survival mechanism of cancer cells.
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Affiliation(s)
- Yasumasa Kakei
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyōgo 650-0017, Japan
| | - Shun Teraoka
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyōgo 650-0017, Japan
| | - Masaya Akashi
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyōgo 650-0017, Japan
| | - Takumi Hasegawa
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyōgo 650-0017, Japan
| | - Takahide Komori
- Department of Oral and Maxillofacial Surgery, Kobe University Graduate School of Medicine, Kobe, Hyōgo 650-0017, Japan
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20
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Jolly MK, Ware KE, Gilja S, Somarelli JA, Levine H. EMT and MET: necessary or permissive for metastasis? Mol Oncol 2017; 11:755-769. [PMID: 28548345 PMCID: PMC5496498 DOI: 10.1002/1878-0261.12083] [Citation(s) in RCA: 247] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Revised: 05/11/2017] [Accepted: 05/18/2017] [Indexed: 12/13/2022] Open
Abstract
Epithelial‐to‐mesenchymal transition (EMT) and its reverse mesenchymal‐to‐epithelial transition (MET) have been suggested to play crucial roles in metastatic dissemination of carcinomas. These phenotypic transitions between states are not binary. Instead, carcinoma cells often exhibit a spectrum of epithelial/mesenchymal phenotype(s). While epithelial/mesenchymal plasticity has been observed preclinically and clinically, whether any of these phenotypic transitions are indispensable for metastatic outgrowth remains an unanswered question. Here, we focus on epithelial/mesenchymal plasticity in metastatic dissemination and propose alternative mechanisms for successful dissemination and metastases beyond the traditional EMT/MET view. We highlight multiple hypotheses that can help reconcile conflicting observations, and outline the next set of key questions that can offer valuable insights into mechanisms of metastasis in multiple tumor models.
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Affiliation(s)
- Mohit Kumar Jolly
- Center for Theoretical Biological Physics, Rice University, Houston, TX, USA
| | - Kathryn E Ware
- Duke Cancer Institute & Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Shivee Gilja
- Duke Cancer Institute & Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Jason A Somarelli
- Duke Cancer Institute & Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - Herbert Levine
- Center for Theoretical Biological Physics, Rice University, Houston, TX, USA
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21
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The Functions of MicroRNA-200 Family in Ovarian Cancer: Beyond Epithelial-Mesenchymal Transition. Int J Mol Sci 2017. [PMID: 28587302 DOI: 10.3390/ijms18061207] [] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The majority of studies on microRNA-200 family members (miR-200s) in human cancers are based on the premise that miR-200s maintain epithelial cell integrity by suppressing epithelial-mesenchymal transition (EMT) through direct inhibition of mesenchymal transcription factors zinc finger E-box-binding homeobox 1/2 (ZEB1/ZEB2) and transforming growth factor-β (TGF-β), a potent inducer of EMT. Hence, downregulation of miR-200 in cancer cells promotes EMT and cancer metastasis. Yet, miR-200s are highly expressed in ovarian cancer, and ovarian cancer metastasizes primarily by dissemination within the pelvic cavity. In this review, we will refocus the epithelial property of ovarian cancer cells and the role of miR-200s in safeguarding this property, as well as the diverse roles of miR-200s in inclusion cyst formation, cancer cell growth, collective movement, angiogenesis, exosome-mediated cell communication, and chemoresponse. Taken together, miR-200s play a significant role in the initiation, progression and metastasis of ovarian cancer and may serve as diagnostic biomarkers and a target in therapeutic development.
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22
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The Functions of MicroRNA-200 Family in Ovarian Cancer: Beyond Epithelial-Mesenchymal Transition. Int J Mol Sci 2017. [PMID: 28587302 DOI: 10.3390/ijms18061207]+[] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The majority of studies on microRNA-200 family members (miR-200s) in human cancers are based on the premise that miR-200s maintain epithelial cell integrity by suppressing epithelial-mesenchymal transition (EMT) through direct inhibition of mesenchymal transcription factors zinc finger E-box-binding homeobox 1/2 (ZEB1/ZEB2) and transforming growth factor-β (TGF-β), a potent inducer of EMT. Hence, downregulation of miR-200 in cancer cells promotes EMT and cancer metastasis. Yet, miR-200s are highly expressed in ovarian cancer, and ovarian cancer metastasizes primarily by dissemination within the pelvic cavity. In this review, we will refocus the epithelial property of ovarian cancer cells and the role of miR-200s in safeguarding this property, as well as the diverse roles of miR-200s in inclusion cyst formation, cancer cell growth, collective movement, angiogenesis, exosome-mediated cell communication, and chemoresponse. Taken together, miR-200s play a significant role in the initiation, progression and metastasis of ovarian cancer and may serve as diagnostic biomarkers and a target in therapeutic development.
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23
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Choi PW, Ng SW. The Functions of MicroRNA-200 Family in Ovarian Cancer: Beyond Epithelial-Mesenchymal Transition. Int J Mol Sci 2017; 18:ijms18061207. [PMID: 28587302 PMCID: PMC5486030 DOI: 10.3390/ijms18061207] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 05/30/2017] [Accepted: 06/01/2017] [Indexed: 12/11/2022] Open
Abstract
The majority of studies on microRNA-200 family members (miR-200s) in human cancers are based on the premise that miR-200s maintain epithelial cell integrity by suppressing epithelial-mesenchymal transition (EMT) through direct inhibition of mesenchymal transcription factors zinc finger E-box-binding homeobox 1/2 (ZEB1/ZEB2) and transforming growth factor-β (TGF-β), a potent inducer of EMT. Hence, downregulation of miR-200 in cancer cells promotes EMT and cancer metastasis. Yet, miR-200s are highly expressed in ovarian cancer, and ovarian cancer metastasizes primarily by dissemination within the pelvic cavity. In this review, we will refocus the epithelial property of ovarian cancer cells and the role of miR-200s in safeguarding this property, as well as the diverse roles of miR-200s in inclusion cyst formation, cancer cell growth, collective movement, angiogenesis, exosome-mediated cell communication, and chemoresponse. Taken together, miR-200s play a significant role in the initiation, progression and metastasis of ovarian cancer and may serve as diagnostic biomarkers and a target in therapeutic development.
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Affiliation(s)
- Pui-Wah Choi
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology, and Reproductive Biology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | - Shu-Wing Ng
- Division of Gynecologic Oncology, Department of Obstetrics, Gynecology, and Reproductive Biology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
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24
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Abstract
Metastases claim more than 90% of cancer-related patient deaths and are usually seeded by a subset of circulating tumor cells shed off from the primary tumor. In circulation, circulating tumor cells are found both as single cells and as clusters of cells. The clusters of circulating tumor cells, although many fewer in number, possess much higher metastatic potential as compared to that of individual circulating tumor cells. In this review, we highlight recent insights into molecular mechanisms that can enable the formation of these clusters—(a) hybrid epithelial/mesenchymal phenotype of cells that couples their ability to migrate and adhere, and (b) intercellular communication that can spatially coordinate the cluster formation and provide survival signals to cancer cells. Building upon these molecular mechanisms, we also offer a possible mechanistic understanding of why clusters are endowed with a higher metastatic potential. Finally, we discuss the highly aggressive Inflammatory Breast Cancer as an example of a carcinoma that can metastasize via clusters and corroborates the proposed molecular mechanisms.
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25
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Muhamed I, Chowdhury F, Maruthamuthu V. Biophysical Tools to Study Cellular Mechanotransduction. Bioengineering (Basel) 2017; 4:E12. [PMID: 28952491 PMCID: PMC5590431 DOI: 10.3390/bioengineering4010012] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 01/30/2017] [Accepted: 02/02/2017] [Indexed: 01/25/2023] Open
Abstract
The cell membrane is the interface that volumetrically isolates cellular components from the cell's environment. Proteins embedded within and on the membrane have varied biological functions: reception of external biochemical signals, as membrane channels, amplification and regulation of chemical signals through secondary messenger molecules, controlled exocytosis, endocytosis, phagocytosis, organized recruitment and sequestration of cytosolic complex proteins, cell division processes, organization of the cytoskeleton and more. The membrane's bioelectrical role is enabled by the physiologically controlled release and accumulation of electrochemical potential modulating molecules across the membrane through specialized ion channels (e.g., Na⁺, Ca2+, K⁺ channels). The membrane's biomechanical functions include sensing external forces and/or the rigidity of the external environment through force transmission, specific conformational changes and/or signaling through mechanoreceptors (e.g., platelet endothelial cell adhesion molecule (PECAM), vascular endothelial (VE)-cadherin, epithelial (E)-cadherin, integrin) embedded in the membrane. Certain mechanical stimulations through specific receptor complexes induce electrical and/or chemical impulses in cells and propagate across cells and tissues. These biomechanical sensory and biochemical responses have profound implications in normal physiology and disease. Here, we discuss the tools that facilitate the understanding of mechanosensitive adhesion receptors. This article is structured to provide a broad biochemical and mechanobiology background to introduce a freshman mechano-biologist to the field of mechanotransduction, with deeper study enabled by many of the references cited herein.
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Affiliation(s)
- Ismaeel Muhamed
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, NC 27695, USA.
| | - Farhan Chowdhury
- Department of Mechanical Engineering and Energy Processes, Southern Illinois University Carbondale, Carbondale, IL 62901, USA.
| | - Venkat Maruthamuthu
- Department of Mechanical and Aerospace Engineering, Old Dominion University, Norfolk, VA 23529, USA.
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Serrano MJ, Alvarez-Cubero MJ, De Miguel Pérez D, Rodríguez-Martínez A, Gonzalez-Herrera L, Robles-Fernandez I, Hernandez JE, Puche JLG, Lorente JA. Significance of EGFR Expression in Circulating Tumor Cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 994:285-296. [DOI: 10.1007/978-3-319-55947-6_16] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Liao YH, Chiang KH, Shieh JM, Huang CR, Shen CJ, Huang WC, Chen BK. Epidermal growth factor-induced ANGPTL4 enhances anoikis resistance and tumour metastasis in head and neck squamous cell carcinoma. Oncogene 2016; 36:2228-2242. [PMID: 27797381 PMCID: PMC5415642 DOI: 10.1038/onc.2016.371] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 08/03/2016] [Accepted: 08/19/2016] [Indexed: 01/04/2023]
Abstract
Epidermal growth factor (EGF) is important for cancer cell proliferation, angiogenesis and metastasis in many types of cancer. However, the mechanisms involved in EGF-induced head and neck squamous cell carcinoma (HNSCC) metastasis remain largely unknown. In this study, we reveal that angiopoietin-like 4 (ANGPTL4) plays an important role in the regulation of EGF-induced cancer metastasis. We showed that EGF-induced ANGPTL4 expression promoted anoikis resistance and cancer cell migration and invasion in HNSCC. In addition, depletion of ANGPTL4 inhibited EGF-induced cancer cell invasion. Autocrine production of EGF-induced ANGPTL4 regulated the expression of matrix metalloproteinases (MMPs). The induction of MMP-1 gene expression by ANGPTL4-activated integrin β1 signalling occurred through the AP-1 binding site in the MMP-1 gene promoter. Furthermore, down-regulation of MMP-1 impeded EGF- and recombinant ANGPTL4-enhanced HNSCC cell migration and invasion. Depletion of ANGPTL4 significantly blocked EGF-primed extravasation and metastatic seeding of tumour cells and MMP-1 expression in lungs. However, no effect of ANGPTL4 on tumour growth was observed. These results suggest that EGF-induced expression and autocrine production of ANGPTL4 enhances HNSCC metastasis via the up-regulation of MMP-1 expression. Inhibition of ANGPTL4 expression may be a potential strategy for the treatment of EGFR-mediated HNSCC metastasis.
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Affiliation(s)
- Y-H Liao
- Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan, ROC
| | - K-H Chiang
- Department of Chest Medicine, Chi Mei Medical Center, Tainan, Taiwan, ROC
| | - J-M Shieh
- Department of Chest Medicine, Chi Mei Medical Center, Tainan, Taiwan, ROC
| | - C-R Huang
- Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan, ROC.,Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan, ROC
| | - C-J Shen
- Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan, ROC
| | - W-C Huang
- Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan, ROC.,Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan, ROC
| | - B-K Chen
- Institute of Bioinformatics and Biosignal Transduction, College of Bioscience and Biotechnology, National Cheng Kung University, Tainan, Taiwan, ROC.,Department of Pharmacology, College of Medicine, National Cheng Kung University, Tainan, Taiwan, ROC.,Institute for Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan, ROC
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Wang HJ, Li MQ, Liu W, Yao GD, Xia MY, Hayashi T, Fujisaki H, Hattori S, Tashiro SI, Onodera S, Ikejima T. Gelatin promotes murine fibrosarcoma L929 cell detachment and protects the cells from TNFα-induced cytotoxicity. Connect Tissue Res 2016; 57:262-9. [PMID: 27031673 DOI: 10.3109/03008207.2016.1146713] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE Gelatin has been considered to exist as intermediate substance of collagen catabolism in tissue remodeling or under inflammatory conditions. We have initiated the study on possible biological functions of gelatin that can exist temporally and locally under the conditions of remodeling and inflammation Materials and methods: To this purpose, we investigated cell proliferation and survival on gelatin-coated dishes and the response to tumor necrosis factor α (TNFα)-induced cytotoxicity in L929 cells. Autophagy level, ATP level, and ROS generation are examined. RESULTS L929 cells detached from the gelatin-coated dishes and formed multicellular aggregates. TNFα-induced cytotoxicity in L929 cells was inhibited by gelatin-coating culture. The cells on gelatin-coated dishes showed reduced cellular ATP levels and increased adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK) phosphorylation, leading to increased ROS generation and autophagy. CONCLUSION This study showed that gelatin-coated culture protected L929 cells from TNFα-induced cytotoxicity and suggested for a possible pathophysiological function of gelatin in regulating cellular functions.
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Affiliation(s)
- Hong-Ju Wang
- a China-Japan Research Institute of Medical and Pharmaceutical Sciences , Shenyang Pharmaceutical University , Shenyang , China
| | - Meng-Qi Li
- a China-Japan Research Institute of Medical and Pharmaceutical Sciences , Shenyang Pharmaceutical University , Shenyang , China
| | - Wei Liu
- a China-Japan Research Institute of Medical and Pharmaceutical Sciences , Shenyang Pharmaceutical University , Shenyang , China
| | - Guo-Dong Yao
- a China-Japan Research Institute of Medical and Pharmaceutical Sciences , Shenyang Pharmaceutical University , Shenyang , China
| | - Ming-Yu Xia
- a China-Japan Research Institute of Medical and Pharmaceutical Sciences , Shenyang Pharmaceutical University , Shenyang , China
| | - Toshihiko Hayashi
- a China-Japan Research Institute of Medical and Pharmaceutical Sciences , Shenyang Pharmaceutical University , Shenyang , China
| | - Hitomi Fujisaki
- b Nippi Research Institute of Biomatrix, Nippi, Incorporated, Toride , Japan
| | - Shunji Hattori
- b Nippi Research Institute of Biomatrix, Nippi, Incorporated, Toride , Japan
| | - Shin-Ichi Tashiro
- c Department of Medical Education and Primary Care , Kyoto Prefectural University of Medicine , Kyoto , Japan
| | - Satoshi Onodera
- d Department of Clinical and Pharmaceutical Sciences , Showa Pharmaceutical University , Tokyo , Japan
| | - Takashi Ikejima
- a China-Japan Research Institute of Medical and Pharmaceutical Sciences , Shenyang Pharmaceutical University , Shenyang , China
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Cetuximab and Cisplatin Show Different Combination Effect in Nasopharyngeal Carcinoma Cells Lines via Inactivation of EGFR/AKT Signaling Pathway. Biochem Res Int 2016; 2016:7016907. [PMID: 27313893 PMCID: PMC4894995 DOI: 10.1155/2016/7016907] [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: 01/08/2016] [Accepted: 04/11/2016] [Indexed: 01/25/2023] Open
Abstract
Nasopharyngeal carcinoma (NPC) is a common malignant cancer in South China. Cisplatin is a classical chemotherapeutic employed for NPC treatment. Despite the use of cisplatin-based concurrent chemoradiotherapy, distant failure still confuses clinicians and the outcome of metastatic NPC remains disappointing. Hence, a potent systemic therapy is needed for this cancer. Epidermal growth factor receptor (EGFR) represents a promising new therapeutic target in cancer. We predicted that combining the conventional cytotoxic drug cisplatin with the novel molecular-targeted agent cetuximab demonstrates a strong antitumor effect on NPC cells. In this study, we selected HNE1 and CNE2 cells, which have been proved to possess different EGFR expression levels, to validate our conjecture. The two-drug regimen showed a significant synergistic effect in HNE1 cells but an additive effect in CNE2 cells. Our results showed that cisplatin-induced apoptosis was significantly enhanced by cetuximab in the high EGFR-expressing HNE1 cells but not in CNE2 cells. Further molecular mechanism study indicated that the EGFR/AKT pathway may play an important role in cell apoptosis via the mitochondrial-mediated intrinsic pathway and lead to the different antitumor effects of this two-drug regimen between HNE1 and CNE2 cells. Thus, the regimen may be applied in personalized NPC treatments.
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OHNISHI YUICHI, YASUI HIROKI, KAKUDO KENJI, NOZAKI MASAMI. Cetuximab-resistant oral squamous cell carcinoma cells become sensitive in anchorage-independent culture conditions through the activation of the EGFR/AKT pathway. Int J Oncol 2015; 47:2165-72. [DOI: 10.3892/ijo.2015.3215] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 09/26/2015] [Indexed: 11/05/2022] Open
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Erasmus JC, Welsh NJ, Braga VMM. Cooperation of distinct Rac-dependent pathways to stabilise E-cadherin adhesion. Cell Signal 2015; 27:1905-13. [PMID: 25957131 PMCID: PMC4508347 DOI: 10.1016/j.cellsig.2015.04.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 04/18/2015] [Accepted: 04/28/2015] [Indexed: 11/25/2022]
Abstract
The precise mechanisms via which Rac1 is activated by cadherin junctions are not fully known. In keratinocytes Rac1 activation by cadherin junctions requires EGFR signalling, but how EGFR does so is unclear. To address which activator could mediate E-cadherin signalling to Rac1, we investigated EGFR and two Rac1 GEFs, SOS1 and DOCK180. EGFR RNAi prevented junction-induced Rac1 activation and led to fragmented localization of E-cadherin at cadherin contacts. In contrast, depletion of another EGFR family member, ErbB3, did not interfere with either process. DOCK180 RNAi, but not SOS1, prevented E-cadherin-induced Rac1 activation. However, in a strong divergence from EGFR RNAi phenotype, DOCK180 depletion did not perturb actin recruitment or cadherin localisation at junctions. Rather, reduced DOCK180 levels impaired the resistance to mechanical stress of pre-formed cell aggregates. Thus, within the same cell type, EGFR and DOCK180 regulate Rac1 activation by newly-formed contacts, but control separate cellular events that cooperate to stabilise junctions.
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Affiliation(s)
- Jennifer C Erasmus
- Molecular Medicine, National Heart and Lung Institute, Faculty of Medicine, Imperial College London, Sir Alexander Fleming Building, SW7 2AZ London, UK
| | - Natalie J Welsh
- Molecular Medicine, National Heart and Lung Institute, Faculty of Medicine, Imperial College London, Sir Alexander Fleming Building, SW7 2AZ London, UK
| | - Vania M M Braga
- Molecular Medicine, National Heart and Lung Institute, Faculty of Medicine, Imperial College London, Sir Alexander Fleming Building, SW7 2AZ London, UK.
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Alimperti S, Andreadis ST. CDH2 and CDH11 act as regulators of stem cell fate decisions. Stem Cell Res 2015; 14:270-82. [PMID: 25771201 DOI: 10.1016/j.scr.2015.02.002] [Citation(s) in RCA: 115] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 01/24/2015] [Accepted: 02/10/2015] [Indexed: 12/14/2022] Open
Abstract
Accumulating evidence suggests that the mechanical and biochemical signals originating from cell-cell adhesion are critical for stem cell lineage specification. In this review, we focus on the role of cadherin mediated signaling in development and stem cell differentiation, with emphasis on two well-known cadherins, cadherin-2 (CDH2) (N-cadherin) and cadherin-11 (CDH11) (OB-cadherin). We summarize the existing knowledge regarding the role of CDH2 and CDH11 during development and differentiation in vivo and in vitro. We also discuss engineering strategies to control stem cell fate decisions by fine-tuning the extent of cell-cell adhesion through surface chemistry and microtopology. These studies may be greatly facilitated by novel strategies that enable monitoring of stem cell specification in real time. We expect that better understanding of how intercellular adhesion signaling affects lineage specification may impact biomaterial and scaffold design to control stem cell fate decisions in three-dimensional context with potential implications for tissue engineering and regenerative medicine.
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Affiliation(s)
- Stella Alimperti
- Bioengineering Laboratory, Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Amherst, NY 14260-4200, USA
| | - Stelios T Andreadis
- Bioengineering Laboratory, Department of Chemical and Biological Engineering, University at Buffalo, State University of New York, Amherst, NY 14260-4200, USA; Center of Excellence in Bioinformatics and Life Sciences, Buffalo, NY 14203, USA.
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33
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Rayavarapu RR, Heiden B, Pagani N, Shaw MM, Shuff S, Zhang S, Schafer ZT. The role of multicellular aggregation in the survival of ErbB2-positive breast cancer cells during extracellular matrix detachment. J Biol Chem 2015; 290:8722-33. [PMID: 25681438 DOI: 10.1074/jbc.m114.612754] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2014] [Indexed: 12/18/2022] Open
Abstract
The metastasis of cancer cells from the site of the primary tumor to distant sites in the body represents the most deadly manifestation of cancer. In order for metastasis to occur, cancer cells need to evade anoikis, which is defined as apoptosis caused by loss of attachment to extracellular matrix (ECM). Signaling from ErbB2 has previously been linked to the evasion of anoikis in breast cancer cells but the precise molecular mechanisms by which ErbB2 blocks anoikis have yet to be unveiled. In this study, we have identified a novel mechanism by which anoikis is inhibited in ErbB2-expressing cells: multicellular aggregation during ECM-detachment. Our data demonstrate that disruption of aggregation in ErbB2-positive cells is sufficient to induce anoikis and that this anoikis inhibition is a result of aggregation-induced stabilization of EGFR and consequent ERK/MAPK survival signaling. Furthermore, these data suggest that ECM-detached ErbB2-expressing cells may be uniquely susceptible to targeted therapy against EGFR and that this sensitivity could be exploited for specific elimination of ECM-detached cancer cells.
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Affiliation(s)
- Raju R Rayavarapu
- From the Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
| | - Brendan Heiden
- From the Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
| | - Nicholas Pagani
- From the Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
| | - Melissa M Shaw
- From the Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
| | - Sydney Shuff
- From the Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
| | - Siyuan Zhang
- From the Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
| | - Zachary T Schafer
- From the Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana 46556
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Hindupur SK, Balaji SA, Saxena M, Pandey S, Sravan GS, Heda N, Kumar MV, Mukherjee G, Dey D, Rangarajan A. Identification of a novel AMPK-PEA15 axis in the anoikis-resistant growth of mammary cells. Breast Cancer Res 2014; 16:420. [PMID: 25096718 PMCID: PMC4303232 DOI: 10.1186/s13058-014-0420-z] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2013] [Accepted: 07/25/2014] [Indexed: 02/08/2023] Open
Abstract
INTRODUCTION Matrix detachment triggers anoikis, a form of apoptosis, in most normal epithelial cells, while acquisition of anoikis resistance is a prime requisite for solid tumor growth. Of note, recent studies have revealed that a small population of normal human mammary epithelial cells (HMECs) survive in suspension and generate multicellular spheroids termed 'mammospheres'. Therefore, understanding how normal HMECs overcome anoikis may provide insights into breast cancer initiation and progression. METHODS Primary breast tissue-derived normal HMECs were grown as adherent monolayers or mammospheres. The status of AMP-activated protein kinase (AMPK) and PEA15 signaling was investigated by immunoblotting. Pharmacological agents and an RNA interference (RNAi) approach were employed to gauge their roles in mammosphere formation. Immunoprecipitation and in vitro kinase assays were undertaken to evaluate interactions between AMPK and PEA15. In vitro sphere formation and tumor xenograft assays were performed to understand their roles in tumorigenicity. RESULTS In this study, we show that mammosphere formation by normal HMECs is accompanied with an increase in AMPK activity. Inhibition or knockdown of AMPK impaired mammosphere formation. Concomitant with AMPK activation, we detected increased Ser116 phosphorylation of PEA15, which promotes its anti-apoptotic functions. Inhibition or knockdown of AMPK impaired PEA15 Ser116 phosphorylation and increased apoptosis. Knockdown of PEA15, or overexpression of the nonphosphorylatable S116A mutant of PEA15, also abrogated mammosphere formation. We further demonstrate that AMPK directly interacts with and phosphorylates PEA15 at Ser116 residue, thus identifying PEA15 as a novel AMPK substrate. Together, these data revealed that AMPK activation facilitates mammosphere formation by inhibition of apoptosis, at least in part, through Ser116 phosphorylation of PEA15. Since anoikis resistance plays a critical role in solid tumor growth, we investigated the relevance of these findings in the context of breast cancer. Significantly, we show that the AMPK-PEA15 axis plays an important role in the anchorage-independent growth of breast cancer cells both in vitro and in vivo. CONCLUSIONS Our study identifies a novel AMPK-PEA15 signaling axis in the anchorage-independent growth of both normal and cancerous mammary epithelial cells, suggesting that breast cancer cells may employ mechanisms of anoikis resistance already inherent within a subset of normal HMECs. Thus, targeting the AMPK-PEA15 axis might prevent breast cancer dissemination and metastasis.
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35
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Lv T, Liu Y, Zhang J, Xu L, Zhu Y, Yin H, An H, Lin Z, Xie Y, Chen L. Impact of an altered PROX1 expression on clinicopathology, prognosis and progression in renal cell carcinoma. PLoS One 2014; 9:e95996. [PMID: 24797520 PMCID: PMC4010401 DOI: 10.1371/journal.pone.0095996] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 03/30/2014] [Indexed: 12/15/2022] Open
Abstract
The transcription factor PROX1 (prospero homeobox 1) has a critical role in the development of various organs, and has been implicated in both oncogenic and tumor-suppressive functions in human cancers. However, the role of PROX1 in the development of renal cell carcinomas (RCCs) has not yet been studied. Here, we reported that PROX1 expression was decreased in human RCC tissues compared with adjacent normal tissues. In RCC tissues, however, poorly differentiated RCC expressed higher PROX1 levels compared with well-differentiated RCC. In addition, the PROX1 immunostaining levels were positively correlated with tumor nuclear grade and lymph node metastasis. Further, high PROX1 expression indicated poor survival for patients. These findings imply that in the different developmental stages of RCC, PROX1 may exert distinct functions according to the specific microenvironment of tumor. Moreover, in vitro experiments revealed that PROX1 overexpression enhanced the proliferation and migration of RCC cells; conversely, PROX1 depletion by siRNA attenuated the proliferation and migration of RCC cells. Collectively, these observations suggest that PROX1 plays an important role in RCC development and progression, and PROX1 may be a novel target for prevention and treatment of RCC.
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Affiliation(s)
- Tao Lv
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yanfeng Liu
- Key Laboratory of Medical Molecular Virology (MOE & MOH), Institute of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
| | - Jianping Zhang
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Le Xu
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yu Zhu
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Hankun Yin
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Huimin An
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Zongming Lin
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai, China
- * E-mail: (ZL); (YX); (LC)
| | - Youhua Xie
- Key Laboratory of Medical Molecular Virology (MOE & MOH), Institute of Biomedical Sciences, Shanghai Medical College, Fudan University, Shanghai, China
- * E-mail: (ZL); (YX); (LC)
| | - Lian Chen
- Department of Pathology, Children Hospital, Fudan University, Shanghai, China
- * E-mail: (ZL); (YX); (LC)
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Fong ELS, Martinez M, Yang J, Mikos AG, Navone NM, Harrington DA, Farach-Carson MC. Hydrogel-based 3D model of patient-derived prostate xenograft tumors suitable for drug screening. Mol Pharm 2014; 11:2040-50. [PMID: 24779589 PMCID: PMC4096229 DOI: 10.1021/mp500085p] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
![]()
The lack of effective
therapies for bone metastatic prostate cancer
(PCa) underscores the need for accurate models of the disease to enable
the discovery of new therapeutic targets and to test drug sensitivities
of individual tumors. To this end, the patient-derived xenograft (PDX)
PCa model using immunocompromised mice was established to model the
disease with greater fidelity than is possible with currently employed
cell lines grown on tissue culture plastic. However, poorly adherent
PDX tumor cells exhibit low viability in standard culture, making
it difficult to manipulate these cells for subsequent controlled mechanistic
studies. To overcome this challenge, we encapsulated PDX tumor cells
within a three-dimensional hyaluronan-based hydrogel and demonstrated
that the hydrogel maintains PDX cell viability with continued native
androgen receptor expression. Furthermore, a differential sensitivity
to docetaxel, a chemotherapeutic drug, was observed as compared to
a traditional PCa cell line. These findings underscore the potential
impact of this novel 3D PDX PCa model as a diagnostic platform for
rapid drug evaluation and ultimately push personalized medicine toward
clinical reality.
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Affiliation(s)
- Eliza L S Fong
- Departments of Biochemistry and Cell Biology and ‡Bioengineering, Rice University , Houston, Texas 77005, United States
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Nitric oxide mediates cell aggregation and mesenchymal to epithelial transition in anoikis-resistant lung cancer cells. Mol Cell Biochem 2014; 393:237-45. [PMID: 24771070 DOI: 10.1007/s11010-014-2066-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 04/12/2014] [Indexed: 12/30/2022]
Abstract
Cancer cell aggregation has been long known to facilitate metastatic potential of cancer cells. In addition, the presence of nitric oxide (NO) in cancer area may have a significant impact on aggregation behavior of the cells. We show herein that lung cancer H460 cells possessing high ability of anoikis resistance formed loose aggregates in detached condition. Importantly, NO treatment tightened the aggregates by enhancing cell-cell interaction via E-cadherin-dependent mechanism, and such E-cadherin contact increased anoikis resistance potential by up-regulating pro-survival signals of the cells including active ATP-dependent tyrosine kinase and extracellular-regulated protein kinases (ERK1/2). Since an increase of E-cadherin was frequently found in mesenchymal to epithelial transition (MET) process, we further tested the cells for MET markers and found that NO treatment of these cells significantly enhanced MET. As aggregation and MET of cancer cells may facilitate cancer metastasis by many means, the insights gained from the present study could benefit the deep understanding in the biology of cancer cell metastasis.
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38
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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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Paoli P, Giannoni E, Chiarugi P. Anoikis molecular pathways and its role in cancer progression. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1833:3481-3498. [PMID: 23830918 DOI: 10.1016/j.bbamcr.2013.06.026] [Citation(s) in RCA: 741] [Impact Index Per Article: 67.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 06/21/2013] [Accepted: 06/22/2013] [Indexed: 02/07/2023]
Abstract
Anoikis is a programmed cell death induced upon cell detachment from extracellular matrix, behaving as a critical mechanism in preventing adherent-independent cell growth and attachment to an inappropriate matrix, thus avoiding colonizing of distant organs. As anchorage-independent growth and epithelial-mesenchymal transition, two features associated with anoikis resistance, are vital steps during cancer progression and metastatic colonization, the ability of cancer cells to resist anoikis has now attracted main attention from the scientific community. Cancer cells develop anoikis resistance due to several mechanisms, including change in integrins' repertoire allowing them to grow in different niches, activation of a plethora of inside-out pro-survival signals as over-activation of receptors due to sustained autocrine loops, oncogene activation, growth factor receptor overexpression, or mutation/upregulation of key enzymes involved in integrin or growth factor receptor signaling. In addition, tumor microenvironment has also been acknowledged to contribute to anoikis resistance of bystander cancer cells, by modulating matrix stiffness, enhancing oxidative stress, producing pro-survival soluble factors, triggering epithelial-mesenchymal transition and self-renewal ability, as well as leading to metabolic deregulations of cancer cells. All these events help cancer cells to inhibit the apoptosis machinery and sustain pro-survival signals after detachment, counteracting anoikis and constituting promising targets for anti-metastatic pharmacological therapy. This article is part of a Special Section entitled: Cell Death Pathways.
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Affiliation(s)
- Paolo Paoli
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy
| | - Elisa Giannoni
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy
| | - Paola Chiarugi
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy; Tuscany Tumor Institute and "Center for Research, Transfer and High Education, DENOTHE", 50134 Florence, Italy.
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Nijkamp MM, Span PN, Bussink J, Kaanders JHAM. Interaction of EGFR with the tumour microenvironment: implications for radiation treatment. Radiother Oncol 2013; 108:17-23. [PMID: 23746695 DOI: 10.1016/j.radonc.2013.05.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 05/04/2013] [Accepted: 05/12/2013] [Indexed: 12/27/2022]
Abstract
Treatment failure through radioresistance of tumours is associated with activation of the epidermal growth factor receptor (EGFR). Tumour cell proliferation, DNA-repair, hypoxia and metastases-formation are four mechanisms in which EGFR signalling has an important role. In clinical trials, a correlation has been demonstrated between high EGFR expression in tumours and poor outcome after radiotherapy. Inhibition of EGFR signalling pathways improves the effectiveness of radiotherapy of head and neck cancers by overcoming these main mechanisms of radioresistance. The fact that only a minority of the patients respond to EGFR inhibitors reflects the complexity of interactions between EGFR-dependent signalling pathways and the tumour microenvironment. Furthermore, many components of the microenvironment are potential targets for therapeutic interventions. Characterisation of the interaction of EGFR signalling and the tumour microenvironment is therefore necessary to improve the effectiveness of combined modality treatment with radiotherapy and targeted agents. Here, the current status of knowledge is reviewed and directions for future research are discussed.
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Affiliation(s)
- Monique M Nijkamp
- Department of Radiation Oncology, Radboud University Nijmegen Medical Centre, The Netherlands
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Wierstra I. FOXM1 (Forkhead box M1) in tumorigenesis: overexpression in human cancer, implication in tumorigenesis, oncogenic functions, tumor-suppressive properties, and target of anticancer therapy. Adv Cancer Res 2013; 119:191-419. [PMID: 23870513 DOI: 10.1016/b978-0-12-407190-2.00016-2] [Citation(s) in RCA: 138] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
FOXM1 (Forkhead box M1) is a typical proliferation-associated transcription factor and is also intimately involved in tumorigenesis. FOXM1 stimulates cell proliferation and cell cycle progression by promoting the entry into S-phase and M-phase. Additionally, FOXM1 is required for proper execution of mitosis. In accordance with its role in stimulation of cell proliferation, FOXM1 exhibits a proliferation-specific expression pattern and its expression is regulated by proliferation and anti-proliferation signals as well as by proto-oncoproteins and tumor suppressors. Since these factors are often mutated, overexpressed, or lost in human cancer, the normal control of the foxm1 expression by them provides the basis for deregulated FOXM1 expression in tumors. Accordingly, FOXM1 is overexpressed in many types of human cancer. FOXM1 is intimately involved in tumorigenesis, because it contributes to oncogenic transformation and participates in tumor initiation, growth, and progression, including positive effects on angiogenesis, migration, invasion, epithelial-mesenchymal transition, metastasis, recruitment of tumor-associated macrophages, tumor-associated lung inflammation, self-renewal capacity of cancer cells, prevention of premature cellular senescence, and chemotherapeutic drug resistance. However, in the context of urethane-induced lung tumorigenesis, FOXM1 has an unexpected tumor suppressor role in endothelial cells because it limits pulmonary inflammation and canonical Wnt signaling in epithelial lung cells, thereby restricting carcinogenesis. Accordingly, FOXM1 plays a role in homologous recombination repair of DNA double-strand breaks and maintenance of genomic stability, that is, prevention of polyploidy and aneuploidy. The implication of FOXM1 in tumorigenesis makes it an attractive target for anticancer therapy, and several antitumor drugs have been reported to decrease FOXM1 expression.
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E-cadherin promotes proliferation of human ovarian cancer cells in vitro via activating MEK/ERK pathway. Acta Pharmacol Sin 2012; 33:817-22. [PMID: 22543706 DOI: 10.1038/aps.2012.30] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
AIM E-cadherin is unusually highly expressed in most ovarian cancers. This study was designed to investigate the roles of E-cadherin in the carcinogenesis and progression of ovarian cancers. METHODS Human ovarian adenocarcinoma cell line SKOV-3 was examined. E-cadherin gene CDH1 in SKOV-3 cells was knocked down via RNA interference (RNAi), and the resultant variation of biological behavior was observed using CCK-8 and colony formation experiment. E-cadherin-mediated Ca(2+)-dependent cell-cell adhesion was used to study the mechanisms underlying the effects of E-cadherin on the proliferation and survival of SKOV-3 cells. The expression levels of E-cadherin, extracellular signal-related kinase (ERK), phosphorylated ERK (P-ERK) were measured using Western blot assays. RESULTS Transfection with CDH1-siRNA for 24-96 h significantly suppressed the growth and proliferation of SKOV-3 cells. E-cadherin-mediated calcium-dependent cell-cell adhesion of SKOV-3 cells resulted in a rapid increase of P-ERK, but did not modify the expression of ERK protein. The phosphorylation of ERK in the cells was blocked by pretreatment with the MEK1 specific inhibitor PD98059 (50 μmol/L), but not by the PI3K inhibitor wortmannin (1 μmol/L) or PKA inhibitor H89 (10 μmol/L). CONCLUSION E-cadherin may function as a tumor proliferation enhancer via activating the MEK/ERK pathway in development of ovarian epithelial cancers.
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Liu B, Qu L, Yang Z, Tao H. Cyclooxygenase-2 inhibitors induce anoikis in osteosarcoma via PI3K/Akt pathway. Med Hypotheses 2012; 79:98-100. [PMID: 22546756 DOI: 10.1016/j.mehy.2012.04.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2012] [Accepted: 04/03/2012] [Indexed: 11/15/2022]
Abstract
COX-2, an inducible enzyme, is associated with inflammatory diseases and carcinogenesis. Overexpression of COX-2 occurs in many human malignancies, including osteosarcoma. In our study, we reported that Celecoxib, a cyclooxygenase-2 inhibitor, induces apoptosis in human osteosarcoma cell line MG-63 via down-regulation of PI3K/Akt. PI3K/Akt plays an essential role in the cell/extracellar matrix (ECM) and cell/cell adhesion. We hypothesize that COX-2 inhibitors induce anoikis in osteosarcoma via PI3K/Akt, resulted in lack of correct attachment and the down-regulations of β-catenin, TrkB and E-cadherin, which play an essential role in the cell/extracellar matrix (ECM) and cell/cell adhesion. Meanwhile, apoptosis also be disclosed, such as DNA fragments and apoptotic bodies, activation of caspase-8, 9 and cleavage of PARP. With wortmannin, a specific PI3K inhibitor can simulate the effect of COX-2 inhibitors. If our hypothesis is correct, COX-2 inhibitors could cut down the occurrence of metastasis and facilitate the patient who may benefit from addition of COX-2 inhibitors to standard cytotoxic therapy.
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Affiliation(s)
- Bing Liu
- Department of Orthopedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, #88 Jie Fang Road, Hangzhou, 310009 Zhejiang, PR China
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Rodriguez FJ, Lewis-Tuffin LJ, Anastasiadis PZ. E-cadherin's dark side: possible role in tumor progression. Biochim Biophys Acta Rev Cancer 2012; 1826:23-31. [PMID: 22440943 DOI: 10.1016/j.bbcan.2012.03.002] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Revised: 02/28/2012] [Accepted: 03/01/2012] [Indexed: 02/07/2023]
Abstract
In the context of cancer, E-cadherin has traditionally been categorized as a tumor suppressor, given its essential role in the formation of proper intercellular junctions, and its downregulation in the process of epithelial-mesenchymal transition (EMT) in epithelial tumor progression. Germline or somatic mutations in the E-cadherin gene (CDH1) or downregulation by epigenetic mechanisms have been described in a small subset of epithelial cancers. However, recent evidence also points toward a promoting role of E-cadherin in several aspects of tumor progression. This includes preserved (or increased) E-cadherin expression in microemboli of inflammatory breast carcinoma, a possible "mesenchymal to epithelial transition" (MET) in ovarian carcinoma, collective cell invasion in some epithelial cancers, a recent association of E-cadherin expression with a more aggressive brain tumor subset, as well as the intriguing possibility of E-cadherin involvement in specific signaling networks in the cytoplasm and/or nucleus. In this review we address a lesser-known, positive role for E-cadherin in cancer.
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Affiliation(s)
- Fausto J Rodriguez
- Department of Pathology, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
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Lelièvre EC, Plestant C, Boscher C, Wolff E, Mège RM, Birbes H. N-cadherin mediates neuronal cell survival through Bim down-regulation. PLoS One 2012; 7:e33206. [PMID: 22427990 PMCID: PMC3299760 DOI: 10.1371/journal.pone.0033206] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Accepted: 02/11/2012] [Indexed: 01/22/2023] Open
Abstract
N-cadherin is a major adhesion molecule involved in the development and plasticity of the nervous system. N-cadherin-mediated cell adhesion regulates neuroepithelial cell polarity, neuronal precursor migration, growth cone migration and synaptic plasticity. In vitro, it has been involved in signaling events regulating processes such as cell mobility, proliferation and differentiation. N-cadherin has also been implicated in adhesion-dependent protection against apoptosis in non-neuronal cells. In this study, we investigated if the engagement of N-cadherin participates to the control of neuronal cells survival/death balance. We observed that plating either primary mouse spinal cord neurons or primary rat hippocampal neurons on N-cadherin recombinant substrate greatly enhances their survival compared to non-specific adhesion on poly-L-lysine. We show that N-cadherin engagement, in the absence of other survival factors (cell-matrix interactions and serum), protects GT1-7 neuronal cells against apoptosis. Using this cell line, we then searched for the signaling pathways involved in the survival effect of N-cadherin engagement. The PI3-kinase/Akt survival pathway and its downstream effector Bad are not involved, as no phosphorylation of Akt or Bad proteins in response to N-cadherin engagement was observed. In contrast, N-cadherin engagement activated the Erk1/2 MAP kinase pathway. Moreover, N-cadherin ligation mediated a 2-fold decrease in the level of the pro-apoptotic protein Bim-EL whereas the level of the anti-apoptotic protein Bcl-2 was unchanged. Inhibition of Mek1/2 kinases with U0126, and the resulting inhibition of Erk1/2 phosphorylation, induced the increase of both the level of Bim-EL and apoptosis of cells seeded on the N-cadherin substrate, suggesting that Erk phosphorylation is necessary for cell survival. Finally, the overexpression of a phosphorylation defective form of Bim-EL prevented N-cadherin-engagement induced cell survival. In conclusion, our results show that N-cadherin engagement mediates neuronal cell survival by enhancing the MAP kinase pathway and down-regulating the pro-apoptotic protein Bim-EL.
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Affiliation(s)
- Elise C. Lelièvre
- INSERM, UMRS-839, Paris, France
- Université Pierre et Marie Curie-Paris 6, Paris, France
- Institut du Fer à Moulin, Paris, France
| | - Charlotte Plestant
- INSERM, UMRS-839, Paris, France
- Université Pierre et Marie Curie-Paris 6, Paris, France
- Institut du Fer à Moulin, Paris, France
| | - Cécile Boscher
- INSERM, UMRS-839, Paris, France
- Université Pierre et Marie Curie-Paris 6, Paris, France
- Institut du Fer à Moulin, Paris, France
| | - Emeline Wolff
- INSERM, UMRS-839, Paris, France
- Université Pierre et Marie Curie-Paris 6, Paris, France
- Institut du Fer à Moulin, Paris, France
| | - René-Marc Mège
- INSERM, UMRS-839, Paris, France
- Université Pierre et Marie Curie-Paris 6, Paris, France
- Institut du Fer à Moulin, Paris, France
| | - Hélène Birbes
- INSERM, UMRS-839, Paris, France
- Université Pierre et Marie Curie-Paris 6, Paris, France
- Institut du Fer à Moulin, Paris, France
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Taddei ML, Giannoni E, Fiaschi T, Chiarugi P. Anoikis: an emerging hallmark in health and diseases. J Pathol 2012; 226:380-93. [PMID: 21953325 DOI: 10.1002/path.3000] [Citation(s) in RCA: 399] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Anoikis is a programmed cell death occurring upon cell detachment from the correct extracellular matrix, thus disrupting integrin ligation. It is a critical mechanism in preventing dysplastic cell growth or attachment to an inappropriate matrix. Anoikis prevents detached epithelial cells from colonizing elsewhere and is thus essential for tissue homeostasis and development. As anchorage-independent growth and epithelial-mesenchymal transition, two features associated with anoikis resistance, are crucial steps during tumour progression and metastatic spreading of cancer cells, anoikis deregulation has now evoked particular attention from the scientific community. The aim of this review is to analyse the molecular mechanisms governing both anoikis and anoikis resistance, focusing on their regulation in physiological processes, as well as in several diseases, including metastatic cancers, cardiovascular diseases and diabetes.
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Affiliation(s)
- M L Taddei
- Department of Biochemical Sciences, University of Florence, and Tumour Institute and Centre for Research, Transfer and High Education DenoTHE, Florence, Italy
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Humtsoe JO, Koya E, Pham E, Aramoto T, Zuo J, Ishikawa T, Kramer RH. Transcriptional profiling identifies upregulated genes following induction of epithelial-mesenchymal transition in squamous carcinoma cells. Exp Cell Res 2011; 318:379-90. [PMID: 22154512 DOI: 10.1016/j.yexcr.2011.11.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2011] [Revised: 10/31/2011] [Accepted: 11/17/2011] [Indexed: 10/14/2022]
Abstract
During the progression of head and neck squamous cell carcinoma (HNSCC), the induction of an epithelial-mesenchymal transition (EMT) program may play a critical role in the dissemination of cells from the primary tumor to distant metastatic foci. The process of EMT involves the activation of several important genes and pathways to help maintain survival and growth and evolve into highly invasive and metastatic variants. In this study, expression microarray analysis identified a set of 145 upregulated genes in EMT-like HNSCC cells. Some of the strongly upregulated transcripts include genes that are reportedly involved in invasion and metastasis, such as DOCK10, LOX, ROBO1 and SRGN. Importantly, the Tbx3 gene, a member of the T-box transcription factor, was strongly upregulated in SCC cells displaying an EMT-like phenotype compared to cells with an epitheloid, non-EMT behavior. Tbx3 was also found to be strongly upregulated at the protein and gene expression level in an experimental model of snail-induced EMT cells. In addition, siRNA-induced Tbx3 depletion modestly suppressed cell invasion while enhancing Tbx3-mediated resistance to anoikis. Our findings provide evidence that Tbx3 overexpression promotes SCC cell survival displaying an EMT phenotype. This set of newly identified genes that are modulated during EMT-like conversion may be important diagnostic biomarkers during the process of HNSCC progression.
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Affiliation(s)
- Joseph O Humtsoe
- Department of Cell and Tissue Biology, School of Dentistry, 521 Parnassus Avenue, University of California at San Francisco, San Francisco, CA 94143, USA.
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Zhong X, Rescorla FJ. Cell surface adhesion molecules and adhesion-initiated signaling: understanding of anoikis resistance mechanisms and therapeutic opportunities. Cell Signal 2011; 24:393-401. [PMID: 22024283 DOI: 10.1016/j.cellsig.2011.10.005] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Revised: 10/06/2011] [Accepted: 10/10/2011] [Indexed: 12/16/2022]
Abstract
Cells express various cell surface adhesion molecules (receptors) that not only mechanically serve as contacting sites between the cell and extracellular matrix (ECM) or adjacent cells, but also initiate intracellular signaling pathways modulating important cellular events including survival and proliferation. Normal cells undergo apoptosis when lacking ECM attachment. This type of cell death has been termed anoikis. Anoikis can be viewed as a normal process which ensures tissue homeostasis and failure to execute the anoikis program or resistance to anoikis could result in adherent cells surviving under suspension condition and proliferating at ectopic sites where the matrix proteins are different from those the cells originally contact. Resistance to anoikis is emerging as a hallmark of metastatic cancers which enables cancer cells to disseminate to distant organs through systemic circulation. In this review, we will discuss the molecular basis of adhesion-initiated signaling, the impact of loss of cell-ECM adhesion on normal cell survival, the role of cancer cell aggregate formation via intercellular adhesion under non-adherent condition, and mechanisms of anoikis resistance developed in metastatic cancer cells. Understanding of these aspects will provide opportunities to find new potential molecular targets, and therapeutic strategies based on these findings will likely prove to be more specific and effective.
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Affiliation(s)
- Xiaoling Zhong
- Department of Surgery, Section of Pediatric Surgery, and the Riley Children's Hospital, Indiana University School of Medicine, Indianapolis, 46202, IN, USA.
| | - Frederick J Rescorla
- Department of Surgery, Section of Pediatric Surgery, and the Riley Children's Hospital, Indiana University School of Medicine, Indianapolis, 46202, IN, USA
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Kolahgar G, Bardet PL, Langton PF, Alexandre C, Vincent JP. Apical deficiency triggers JNK-dependent apoptosis in the embryonic epidermis of Drosophila. Development 2011; 138:3021-31. [PMID: 21693518 DOI: 10.1242/dev.059980] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Epithelial homeostasis and the avoidance of diseases such as cancer require the elimination of defective cells by apoptosis. Here, we investigate how loss of apical determinants triggers apoptosis in the embryonic epidermis of Drosophila. Transcriptional profiling and in situ hybridisation show that JNK signalling is upregulated in mutants lacking Crumbs or other apical determinants. This leads to transcriptional activation of the pro-apoptotic gene reaper and to apoptosis. Suppression of JNK signalling by overexpression of Puckered, a feedback inhibitor of the pathway, prevents reaper upregulation and apoptosis. Moreover, removal of endogenous Puckered leads to ectopic reaper expression. Importantly, disruption of the basolateral domain in the embryonic epidermis does not trigger JNK signalling or apoptosis. We suggest that apical, not basolateral, integrity could be intrinsically required for the survival of epithelial cells. In apically deficient embryos, JNK signalling is activated throughout the epidermis. Yet, in the dorsal region, reaper expression is not activated and cells survive. One characteristic of these surviving cells is that they retain discernible adherens junctions despite the apical deficit. We suggest that junctional integrity could restrain the pro-apoptotic influence of JNK signalling.
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Affiliation(s)
- Golnar Kolahgar
- MRC National Institute for Medical Research, The Ridgeway, Mill Hill, London, UK
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50
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Filosto S, Khan EM, Tognon E, Becker C, Ashfaq M, Ravid T, Goldkorn T. EGF receptor exposed to oxidative stress acquires abnormal phosphorylation and aberrant activated conformation that impairs canonical dimerization. PLoS One 2011; 6:e23240. [PMID: 21853092 PMCID: PMC3154401 DOI: 10.1371/journal.pone.0023240] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Accepted: 07/08/2011] [Indexed: 02/06/2023] Open
Abstract
Crystallographic studies have offered understanding of how receptor tyrosine kinases from the ErbB family are regulated by their growth factor ligands. A conformational change of the EGFR (ErbB1) was shown to occur upon ligand binding, where a solely ligand-mediated mode of dimerization/activation was documented. However, this dogma of dimerization/activation was revolutionized by the discovery of constitutively active ligand-independent EGFR mutants. In addition, other ligand-independent activation mechanisms may occur. We have shown that oxidative stress (ox-stress), induced by hydrogen peroxide or cigarette smoke, activates EGFR differently than its ligand, EGF, thereby inducing aberrant phosphorylation and impaired trafficking and degradation of EGFR. Here we demonstrate that ox-stress activation of EGFR is ligand-independent, does not induce "classical" receptor dimerization and is not inhibited by the tyrosine kinase inhibitor AG1478. Thus, an unprecedented, apparently activated, state is found for EGFR under ox-stress. Furthermore, this activation mechanism is temperature-dependent, suggesting the simultaneous involvement of membrane structure. We propose that ceramide increase under ox-stress disrupts cholesterol-enriched rafts leading to EGFR re-localization into the rigid, ceramide-enriched rafts. This increase in ceramide also supports EGFR aberrant trafficking to a peri-nuclear region. Therefore, the EGFR unprecedented and activated conformation could be sustained by simultaneous alterations in membrane structure under ox-stress.
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Affiliation(s)
- Simone Filosto
- Center for Comparative Respiratory Biology and Medicine, Genome and Biomedical Sciences Facility, University of California School of Medicine, Davis, California, United States of America
| | - Elaine M. Khan
- Center for Comparative Respiratory Biology and Medicine, Genome and Biomedical Sciences Facility, University of California School of Medicine, Davis, California, United States of America
| | - Emiliana Tognon
- Center for Comparative Respiratory Biology and Medicine, Genome and Biomedical Sciences Facility, University of California School of Medicine, Davis, California, United States of America
| | - Cathleen Becker
- Center for Comparative Respiratory Biology and Medicine, Genome and Biomedical Sciences Facility, University of California School of Medicine, Davis, California, United States of America
| | - Majid Ashfaq
- Center for Comparative Respiratory Biology and Medicine, Genome and Biomedical Sciences Facility, University of California School of Medicine, Davis, California, United States of America
| | - Tommer Ravid
- Center for Comparative Respiratory Biology and Medicine, Genome and Biomedical Sciences Facility, University of California School of Medicine, Davis, California, United States of America
| | - Tzipora Goldkorn
- Center for Comparative Respiratory Biology and Medicine, Genome and Biomedical Sciences Facility, University of California School of Medicine, Davis, California, United States of America
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