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Vitello R, Taouba H, Derand M, Liégeois JF. The Bis(1,2,3,4-tetrahydroisoquinoline) Alkaloids Cepharanthine and Berbamine Are Ligands of SK Channels. ACS Med Chem Lett 2024; 15:215-220. [PMID: 38352826 PMCID: PMC10860169 DOI: 10.1021/acsmedchemlett.3c00452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 12/22/2023] [Accepted: 12/28/2023] [Indexed: 02/16/2024] Open
Abstract
Cepharanthine, a multitarget alkaloid which has recently been shown to be effective against SARS-Cov-2, and berbamine, an alkaloid characterized as a calcium channel blocker, both share key structural elements with known small conductance calcium-activated potassium (SK) channel blockers. These structural similarities led us to evaluate their affinity for SK channels. Therefore, we performed in vitro binding on SK2 and SK3 subtypes and highlighted micromolar to sub-micromolar affinities. Respectively, the Ki values on SK2 and SK3 are 1,318 μM and 1,091 μM for cepharanthine and 0,284 μM and 0,679 μM for berbamine. These newfound affinities correspond to the concentrations at which the alkaloids are found to be active against several pathologies. As SK interactions occur at the same levels as their therapeutic effects, there is a strong incentive to further investigate whether SK channels are involved in their pharmaceutical potency.
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Affiliation(s)
- Romain Vitello
- University of Liège (ULiège), CIRM, Laboratory of Medicinal Chemistry, Liège (4000), Belgium
| | - Hossein Taouba
- University of Liège (ULiège), CIRM, Laboratory of Medicinal Chemistry, Liège (4000), Belgium
| | - Marine Derand
- University of Liège (ULiège), CIRM, Laboratory of Medicinal Chemistry, Liège (4000), Belgium
| | - Jean-François Liégeois
- University of Liège (ULiège), CIRM, Laboratory of Medicinal Chemistry, Liège (4000), Belgium
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2
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Alonso-Pérez V, Hernández V, Calzado MA, Vicente-Blázquez A, Gajate C, Soler-Torronteras R, DeCicco-Skinner K, Sierra A, Mollinedo F. Suppression of metastatic organ colonization and antiangiogenic activity of the orally bioavailable lipid raft-targeted alkylphospholipid edelfosine. Biomed Pharmacother 2024; 171:116149. [PMID: 38266621 DOI: 10.1016/j.biopha.2024.116149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/26/2024] Open
Abstract
Metastasis is the leading cause of cancer mortality. Metastatic cancer is notoriously difficult to treat, and it accounts for the majority of cancer-related deaths. The ether lipid edelfosine is the prototype of a family of synthetic antitumor compounds collectively known as alkylphospholipid analogs, and its antitumor activity involves lipid raft reorganization. In this study, we examined the effect of edelfosine on metastatic colonization and angiogenesis. Using non-invasive bioluminescence imaging and histological examination, we found that oral administration of edelfosine in nude mice significantly inhibited the lung and brain colonization of luciferase-expressing 435-Lung-eGFP-CMV/Luc metastatic cells, resulting in prolonged survival. In metastatic 435-Lung and MDA-MB-231 breast cancer cells, we found that edelfosine also inhibited cell adhesion to collagen-I and laminin-I substrates, cell migration in chemotaxis and wound-healing assays, as well as cancer cell invasion. In 435-Lung and other MDA-MB-435-derived sublines with different organotropism, edelfosine induced G2/M cell cycle accumulation and apoptosis in a concentration- and time-dependent manner. Edelfosine also inhibited in vitro angiogenesis in human and mouse endothelial cell tube formation assays. The antimetastatic properties were specific to cancer cells, as edelfosine had no effects on viability in non-cancerous cells. Edelfosine accumulated in membrane rafts and endoplasmic reticulum of cancer cells, and membrane raft-located CD44 was downregulated upon drug treatment. Taken together, this study highlights the potential of edelfosine as an attractive drug to prevent metastatic growth and organ colonization in cancer therapy. The raft-targeted drug edelfosine displays a potent activity against metastatic organ colonization and angiogenesis, two major hallmarks of tumor malignancy.
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Affiliation(s)
- Verónica Alonso-Pérez
- Instituto de Biología Molecular y Celular del Cáncer (IBMCC), Centro de Investigación del Cáncer (CIC), Consejo Superior de Investigaciones Científicas (CSIC)-Universidad de Salamanca, Campus Miguel de Unamuno, E-37007 Salamanca, Spain
| | - Vanessa Hernández
- Biological Clues of the Invasive and Metastatic Phenotype Group, Molecular Oncology Department, Bellvitge Biomedical Research Institute (IDIBELL), E-08907 L'Hospitalet de Llobregat, Barcelona, Spain
| | - Marco A Calzado
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), E-14004 Córdoba, Spain; Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, E-14004 Córdoba, Spain; Hospital Universitario Reina Sofía, E-14004 Córdoba, Spain
| | - Alba Vicente-Blázquez
- Laboratory of Cell Death and Cancer Therapy, Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas, CSIC, C/ Ramiro de Maeztu 9, E-28040 Madrid, Spain; Department of Biology, American University, Washington, DC 20016, USA
| | - Consuelo Gajate
- Instituto de Biología Molecular y Celular del Cáncer (IBMCC), Centro de Investigación del Cáncer (CIC), Consejo Superior de Investigaciones Científicas (CSIC)-Universidad de Salamanca, Campus Miguel de Unamuno, E-37007 Salamanca, Spain; Laboratory of Cell Death and Cancer Therapy, Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas, CSIC, C/ Ramiro de Maeztu 9, E-28040 Madrid, Spain
| | - Rafael Soler-Torronteras
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC), E-14004 Córdoba, Spain; Departamento de Biología Celular, Fisiología e Inmunología, Universidad de Córdoba, E-14004 Córdoba, Spain; Hospital Universitario Reina Sofía, E-14004 Córdoba, Spain
| | | | - Angels Sierra
- Biological Clues of the Invasive and Metastatic Phenotype Group, Molecular Oncology Department, Bellvitge Biomedical Research Institute (IDIBELL), E-08907 L'Hospitalet de Llobregat, Barcelona, Spain; Laboratory of Experimental Oncological Neurosurgery, Neurosurgery Service, Hospital Clinic de Barcelona-FCRB, E-08036 Barcelona, Spain; Department of Medicine and Life Sciences (MELIS), Faculty of Health and Live Sciences, Universitat Pompeu Fabra, E-08036 Barcelona, Spain
| | - Faustino Mollinedo
- Instituto de Biología Molecular y Celular del Cáncer (IBMCC), Centro de Investigación del Cáncer (CIC), Consejo Superior de Investigaciones Científicas (CSIC)-Universidad de Salamanca, Campus Miguel de Unamuno, E-37007 Salamanca, Spain; Laboratory of Cell Death and Cancer Therapy, Department of Molecular Biomedicine, Centro de Investigaciones Biológicas Margarita Salas, CSIC, C/ Ramiro de Maeztu 9, E-28040 Madrid, Spain.
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3
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Dupuy M, Gueguinou M, Potier-Cartereau M, Lézot F, Papin M, Chantôme A, Rédini F, Vandier C, Verrecchia F. SK Ca- and Kv1-type potassium channels and cancer: Promising therapeutic targets? Biochem Pharmacol 2023; 216:115774. [PMID: 37678626 DOI: 10.1016/j.bcp.2023.115774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/09/2023]
Abstract
Ion channels are transmembrane structures that allow the passage of ions across cell membranes such as the plasma membrane or the membranes of various organelles like the nucleus, endoplasmic reticulum, Golgi apparatus or mitochondria. Aberrant expression of various ion channels has been demonstrated in several tumor cells, leading to the promotion of key functions in tumor development, such as cell proliferation, resistance to apoptosis, angiogenesis, invasion and metastasis. The link between ion channels and these key biological functions that promote tumor development has led to the classification of cancers as oncochannelopathies. Among all ion channels, the most varied and numerous, forming the largest family, are the potassium channels, with over 70 genes encoding them in humans. In this context, this review will provide a non-exhaustive overview of the role of plasma membrane potassium channels in cancer, describing 1) the nomenclature and structure of potassium channels, 2) the role of these channels in the control of biological functions that promotes tumor development such as proliferation, migration and cell death, and 3) the role of two particular classes of potassium channels, the SKCa- and Kv1- type potassium channels in cancer progression.
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Affiliation(s)
- Maryne Dupuy
- Nantes Université, Inserm UMR 1307, CNRS UMR 6075, Université d'Angers, CRCI2NA, F-44000 Nantes, France.
| | | | | | - Frédéric Lézot
- Sorbonne University, INSERM UMR933, Hôpital Trousseau (AP-HP), Paris F-75012, France
| | - Marion Papin
- N2C UMR 1069, University of Tours, INSERM, Tours, France
| | | | - Françoise Rédini
- Nantes Université, Inserm UMR 1307, CNRS UMR 6075, Université d'Angers, CRCI2NA, F-44000 Nantes, France
| | | | - Franck Verrecchia
- Nantes Université, Inserm UMR 1307, CNRS UMR 6075, Université d'Angers, CRCI2NA, F-44000 Nantes, France.
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4
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Mlayah-Bellalouna S, Aissaoui-Zid D, Chantome A, Jebali J, Souid S, Ayedi E, Mejdoub H, Belghazi M, Marrakchi N, Essafi-Benkhadir K, Vandier C, Srairi-Abid N. Insights into the mechanisms governing P01 scorpion toxin effect against U87 glioblastoma cells oncogenesis. Front Pharmacol 2023; 14:1203247. [PMID: 37426811 PMCID: PMC10326281 DOI: 10.3389/fphar.2023.1203247] [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: 04/10/2023] [Accepted: 06/12/2023] [Indexed: 07/11/2023] Open
Abstract
The emerging concept of small conductance Ca2+-activated potassium channels (SKCa) as pharmacological target for cancer treatment has significantly increased in recent years. In this study, we isolated the P01 toxin from Androctonus australis (Aa) scorpion venom and investigated its effect on biological properties of glioblastoma U87, breast MDA-MB231 and colon adenocarcinoma LS174 cancer cell lines. Our results showed that P01 was active only on U87 glioblastoma cells. It inhibited their proliferation, adhesion and migration with IC50 values in the micromolar range. We have also shown that P01 reduced the amplitude of the currents recorded in HEK293 cells expressing SK2 channels with an IC50 value of 3 pM, while it had no effect on those expressing SK3 channels. The investigation of the SKCa channels expression pattern showed that SK2 transcripts were expressed differently in the three cancer cell lines. Particularly, we highlighted the presence of SK2 isoforms in U87 cells, which could explain and rely on the specific activity of P01 on this cell line. These experimental data highlighted the usefulness of scorpion peptides to decipher the role of SKCa channels in the tumorigenesis process, and develop potential therapeutic molecules targeting glioblastoma with high selectivity.
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Affiliation(s)
- Saoussen Mlayah-Bellalouna
- LR20IPT01 Biomolécules, Venins et Application Théranostique, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Dorra Aissaoui-Zid
- LR20IPT01 Biomolécules, Venins et Application Théranostique, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Aurelie Chantome
- N2C UMR 1069, Institut national de la santé et de la recherche médicale, University of Tours, Tours, France
| | - Jed Jebali
- LR20IPT01 Biomolécules, Venins et Application Théranostique, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Soumaya Souid
- LR16IPT04 Laboratoire d’Epidémiologie Moléculaire et Pathologie Expérimentale, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Emna Ayedi
- LR20IPT01 Biomolécules, Venins et Application Théranostique, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Hafedh Mejdoub
- USCR Séquenceur de Protéines, Faculté des Sciences de Sfax, Route de Soukra, Sfax, Tunisia
| | - Maya Belghazi
- Aix Marseille Université, CNRS, Plateforme Protéomique, IMM FR3479, Marseille Protéomique (MaP), Marseille, France
| | - Naziha Marrakchi
- LR20IPT01 Biomolécules, Venins et Application Théranostique, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Khadija Essafi-Benkhadir
- LR16IPT04 Laboratoire d’Epidémiologie Moléculaire et Pathologie Expérimentale, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Christophe Vandier
- N2C UMR 1069, Institut national de la santé et de la recherche médicale, University of Tours, Tours, France
| | - Najet Srairi-Abid
- LR20IPT01 Biomolécules, Venins et Application Théranostique, Institut Pasteur de Tunis, Université de Tunis El Manar, Tunis, Tunisia
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5
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Tiffner A, Hopl V, Derler I. CRAC and SK Channels: Their Molecular Mechanisms Associated with Cancer Cell Development. Cancers (Basel) 2022; 15:101. [PMID: 36612099 PMCID: PMC9817886 DOI: 10.3390/cancers15010101] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 12/28/2022] Open
Abstract
Cancer represents a major health burden worldwide. Several molecular targets have been discovered alongside treatments with positive clinical outcomes. However, the reoccurrence of cancer due to therapy resistance remains the primary cause of mortality. Endeavors in pinpointing new markers as molecular targets in cancer therapy are highly desired. The significance of the co-regulation of Ca2+-permeating and Ca2+-regulated ion channels in cancer cell development, proliferation, and migration make them promising molecular targets in cancer therapy. In particular, the co-regulation of the Orai1 and SK3 channels has been well-studied in breast and colon cancer cells, where it finally leads to an invasion-metastasis cascade. Nevertheless, many questions remain unanswered, such as which key molecular components determine and regulate their interplay. To provide a solid foundation for a better understanding of this ion channel co-regulation in cancer, we first shed light on the physiological role of Ca2+ and how this ion is linked to carcinogenesis. Then, we highlight the structure/function relationship of Orai1 and SK3, both individually and in concert, their role in the development of different types of cancer, and aspects that are not yet known in this context.
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Affiliation(s)
- Adéla Tiffner
- Institute of Biophysics, JKU Life Science Center, Johannes Kepler University Linz, A-4020 Linz, Austria
| | | | - Isabella Derler
- Institute of Biophysics, JKU Life Science Center, Johannes Kepler University Linz, A-4020 Linz, Austria
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6
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Zúñiga L, Cayo A, González W, Vilos C, Zúñiga R. Potassium Channels as a Target for Cancer Therapy: Current Perspectives. Onco Targets Ther 2022; 15:783-797. [PMID: 35899081 PMCID: PMC9309325 DOI: 10.2147/ott.s326614] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 07/08/2022] [Indexed: 12/18/2022] Open
Abstract
Potassium (K+) channels are highly regulated membrane proteins that control the potassium ion flux and respond to different cellular stimuli. These ion channels are grouped into three major families, Kv (voltage-gated K+ channel), Kir (inwardly rectifying K+ channel) and K2P (two-pore K+ channels), according to the structure, to mediate the K+ currents. In cancer, alterations in K+ channel function can promote the acquisition of the so-called hallmarks of cancer – cell proliferation, resistance to apoptosis, metabolic changes, angiogenesis, and migratory capabilities – emerging as targets for the development of new therapeutic drugs. In this review, we focus our attention on the different K+ channels associated with the most relevant and prevalent cancer types. We summarize our knowledge about the potassium channels structure and function, their cancer dysregulated expression and discuss the K+ channels modulator and the strategies for designing new drugs.
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Affiliation(s)
- Leandro Zúñiga
- Laboratorio de Fisiología Molecular, Escuela de Medicina, Universidad de Talca, Talca, Chile.,Centro de Nanomedicina, Diagnóstico y Desarrollo de Fármacos (ND3), Escuela de Medicina, Universidad de Talca, Talca, Chile
| | - Angel Cayo
- Laboratorio de Fisiología Molecular, Escuela de Medicina, Universidad de Talca, Talca, Chile.,Centro de Nanomedicina, Diagnóstico y Desarrollo de Fármacos (ND3), Escuela de Medicina, Universidad de Talca, Talca, Chile
| | - Wendy González
- Centro de Bioinformática y Simulación Molecular, Universidad de Talca, Talca, Chile.,Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Universidad de Talca, Talca, Chile
| | - Cristian Vilos
- Centro de Nanomedicina, Diagnóstico y Desarrollo de Fármacos (ND3), Escuela de Medicina, Universidad de Talca, Talca, Chile.,Laboratory of Nanomedicine and Targeted Delivery, School of Medicine, Universidad de Talca, Talca, 3460000, Chile.,Center for The Development of Nanoscience & Nanotechnology (CEDENNA), Universidad de Santiago de Chile, Santiago, 8350709, Chile
| | - Rafael Zúñiga
- Laboratorio de Fisiología Molecular, Escuela de Medicina, Universidad de Talca, Talca, Chile.,Centro de Nanomedicina, Diagnóstico y Desarrollo de Fármacos (ND3), Escuela de Medicina, Universidad de Talca, Talca, Chile
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7
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Payne SL, Ram P, Srinivasan DH, Le TT, Levin M, Oudin MJ. Potassium channel-driven bioelectric signalling regulates metastasis in triple-negative breast cancer. EBioMedicine 2022; 75:103767. [PMID: 34933180 PMCID: PMC8688589 DOI: 10.1016/j.ebiom.2021.103767] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 11/22/2021] [Accepted: 12/06/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND There is a critical need to better understand the mechanisms that drive local cell invasion and metastasis to develop new therapeutics targeting metastatic disease. Bioelectricity is an important mediator of cellular processes and changes in the resting membrane potential (RMP) are associated with increased cancer cell invasion. However, whether the RMP can be used to target invading cancer cells is unknown. METHODS We employed both genetic and pharmacological manipulation of potassium channel activity and characterized the effects on breast cancer cell migration and invasion in vitro, and metastasis in an animal model of breast cancer. FINDINGS Our data demonstrate that altering the RMP of triple-negative breast cancer (TNBC) cells by manipulating potassium channel expression increases in vitro invasion, in vivo tumour growth and metastasis, and is accompanied by changes in gene expression associated with cell adhesion. INTERPRETATION We describe a novel mechanism for RMP-mediated cell migration involving cadherin-11 and the MAPK pathway. Importantly, we identify a new strategy to target metastatic TNBC in vivo by repurposing an FDA-approved potassium channel blocker. Our results demonstrate that bioelectricity regulates cancer cell invasion and metastasis which could lead to a new class of therapeutics for patients with metastatic disease. FUNDING This work was supported by the National Institutes of Health (R00-CA207866 to M.J.O.), Tufts University (Start-up funds from the School of Engineering to M.J.O., Tufts Collaborates Award to M.J.O. and M.L.), Allen Discovery centre program (Paul G. Allen Frontiers Group (12,171) to M.L.), and Breast Cancer Alliance Young Investigator Grant to M.J.O, Laidlaw Scholar funding to D.S. M.L. also gratefully acknowledges support of the Barton Family Foundation.
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Affiliation(s)
- Samantha L Payne
- Department of Biomedical Engineering, 200 College Avenue, Tufts University, Medford MA 02155, United States of America
| | - Priyanka Ram
- Department of Biomedical Engineering, 200 College Avenue, Tufts University, Medford MA 02155, United States of America
| | - Deepti H Srinivasan
- Department of Biomedical Engineering, 200 College Avenue, Tufts University, Medford MA 02155, United States of America
| | - Thanh T Le
- Department of Biomedical Engineering, 200 College Avenue, Tufts University, Medford MA 02155, United States of America
| | - Michael Levin
- Allen Discovery Center, 200 College Avenue, Tufts University, Medford, MA 02155, United States of America
| | - Madeleine J Oudin
- Department of Biomedical Engineering, 200 College Avenue, Tufts University, Medford MA 02155, United States of America.
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8
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Guéguinou M, Felix R, Marionneau-Lambot S, Oullier T, Penna A, Kouba S, Gambade A, Fourbon Y, Ternant D, Arnoult C, Simon G, Bouchet AM, Chantôme A, Harnois T, Haelters JP, Jaffrès PA, Weber G, Bougnoux P, Carreaux F, Mignen O, Vandier C, Potier-Cartereau M. Synthetic alkyl-ether-lipid promotes TRPV2 channel trafficking trough PI3K/Akt-girdin axis in cancer cells and increases mammary tumour volume. Cell Calcium 2021; 97:102435. [PMID: 34167050 DOI: 10.1016/j.ceca.2021.102435] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 06/09/2021] [Accepted: 06/10/2021] [Indexed: 12/27/2022]
Abstract
The Transient Receptor Potential Vanilloid type 2 (TRPV2) channel is highly selective for Ca2+ and can be activated by lipids, such as LysoPhosphatidylCholine (LPC). LPC analogues, such as the synthetic alkyl-ether-lipid edelfosine or the endogenous alkyl-ether-lipid Platelet Activating Factor (PAF), modulates ion channels in cancer cells. This opens the way to develop alkyl-ether-lipids for the modulation of TRPV2 in cancer. Here, we investigated the role of 2-Acetamido-2-Deoxy-l-O-Hexadecyl-rac-Glycero-3-PhosphatidylCholine (AD-HGPC), a new alkyl-ether-lipid (LPC analogue), on TRPV2 trafficking and its impact on Ca2+ -dependent cell migration. The effect of AD-HGPC on the TRPV2 channel and tumour process was further investigated using calcium imaging and an in vivo mouse model. Using molecular and pharmacological approaches, we dissected the mechanism implicated in alkyl-ether-lipids sensitive TRPV2 trafficking. We found that TRPV2 promotes constitutive Ca2+ entry, leading to migration of highly metastatic breast cancer cell lines through the PI3K/Akt-Girdin axis. AD-HGPC addresses the functional TRPV2 channel in the plasma membrane through Golgi stimulation and PI3K/Akt/Rac-dependent cytoskeletal reorganization, leading to constitutive Ca2+ entry and breast cancer cell migration (without affecting the development of metastasis), in a mouse model. We describe, for the first time, the biological role of a new alkyl-ether-lipid on TRPV2 channel trafficking in breast cancer cells and highlight the potential modulation of TRPV2 by alkyl-ether-lipids as a novel avenue for research in the treatment of metastatic cancer.
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Affiliation(s)
- Maxime Guéguinou
- Inserm UMR 1069, Nutrition Croissance Cancer, Faculté de Médecine, Université de Tours, F-37032, France; PATCH Team, EA 7501 GICC, Faculté de Médecine, Université de Tours, F-37032, France
| | - Romain Felix
- Inserm UMR 1069, Nutrition Croissance Cancer, Faculté de Médecine, Université de Tours, F-37032, France
| | | | - Thibauld Oullier
- Inserm UMR 1235 TENS, Faculté de Médecine, Université de Nantes, F-44035, France
| | - Aubin Penna
- STIM Team, ERL CNRS 7349, UFR SFA Pole Biologie Santé, Université de Poitiers, F-86073, France
| | - Sana Kouba
- Inserm UMR 1069, Nutrition Croissance Cancer, Faculté de Médecine, Université de Tours, F-37032, France
| | - Audrey Gambade
- Inserm UMR 1069, Nutrition Croissance Cancer, Faculté de Médecine, Université de Tours, F-37032, France
| | - Yann Fourbon
- Inserm UMR 1069, Nutrition Croissance Cancer, Faculté de Médecine, Université de Tours, F-37032, France
| | - David Ternant
- PATCH Team, EA 7501 GICC, Faculté de Médecine, Université de Tours, F-37032, France
| | - Christophe Arnoult
- PATCH Team, EA 7501 GICC, Faculté de Médecine, Université de Tours, F-37032, France
| | - Gaëlle Simon
- Univ. Brest, CNRS, CEMCA UMR 6521, 6 Avenue Victor Le Gorgeu, Brest, F-29238, France
| | - Ana Maria Bouchet
- Inserm UMR 1069, Nutrition Croissance Cancer, Faculté de Médecine, Université de Tours, F-37032, France
| | - Aurélie Chantôme
- Inserm UMR 1069, Nutrition Croissance Cancer, Faculté de Médecine, Université de Tours, F-37032, France
| | - Thomas Harnois
- STIM Team, ERL CNRS 7349, UFR SFA Pole Biologie Santé, Université de Poitiers, F-86073, France
| | - Jean-Pierre Haelters
- Univ. Brest, CNRS, CEMCA UMR 6521, 6 Avenue Victor Le Gorgeu, Brest, F-29238, France
| | - Paul-Alain Jaffrès
- Univ. Brest, CNRS, CEMCA UMR 6521, 6 Avenue Victor Le Gorgeu, Brest, F-29238, France
| | - Gunther Weber
- Inserm UMR 1069, Nutrition Croissance Cancer, Faculté de Médecine, Université de Tours, F-37032, France
| | - Philippe Bougnoux
- Inserm UMR 1069, Nutrition Croissance Cancer, Faculté de Médecine, Université de Tours, F-37032, France
| | - François Carreaux
- UMR CNRS 6226, Institut des Sciences Chimiques de Rennes, Université de Rennes, F-35700, France
| | - Olivier Mignen
- Inserm UMR 1227 Immunothérapies et Pathologies Lymphocytaires B, CHU Morvan, Université de Bretagne Occidentale, Brest, F-29609, France
| | - Christophe Vandier
- Inserm UMR 1069, Nutrition Croissance Cancer, Faculté de Médecine, Université de Tours, F-37032, France
| | - Marie Potier-Cartereau
- Inserm UMR 1069, Nutrition Croissance Cancer, Faculté de Médecine, Université de Tours, F-37032, France.
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9
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Sevrain CM, Fontaine D, Bauduin A, Guéguinou M, Zhang BL, Chantôme A, Mahéo K, Pasqualin C, Maupoil V, Couthon H, Vandier C, Jaffrès PA. Thio-ether functionalized glycolipid amphiphilic compounds reveal a potent activator of SK3 channel with vasorelaxation effect. Org Biomol Chem 2021; 19:2753-2766. [PMID: 33687423 DOI: 10.1039/d1ob00021g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The modulation of SK3 ion channels can be efficiently and selectively achieved by using the amphiphilic compound Ohmline (a glyco-glycero-ether-lipid). We report herein a series of Ohmline analogues featuring the replacement of one ether function by a thioether function located at the same position or shifted close to its initial position. The variation of the lipid chain length and the preparation of two analogues featuring either one sulfoxide or one sulfone moiety complete this series. Patch clamp measurements indicate that the presence of the thioether function (compounds 7 and 17a) produces strong activators of SK3 channels, whereas the introduction of a sulfoxide or a sulfone function at the same place produces amphiphiles devoid of an effect on SK3 channels. Compounds 7 and 17a are the first amphiphilic compounds featuring strong activation of SK3 channels (close to 200% activation). The cytosolic calcium concentration determined from fluorescence at 3 different times for compound 7b (13 min, 1 h, 24 h) revealed that the effect is different suggesting that the compound could be metabolized over time. This compound could be used as a strong SK3 activator for a short time. The capacity of 7b to activate SK3 was then used to induce vasorelaxation via an endothelium-derived hyperpolarization (EDH) pathway. For the first time, we report that an amphiphilic compound can affect the endothelium dependent vasorelaxation.
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Affiliation(s)
- Charlotte M Sevrain
- Univ. Brest, CNRS, CEMCA UMR 6521, 6 Avenue Victor Le Gorgeu, Brest, F-29238 Brest, France.
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10
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Stevens MT, Saunders BM. Targets and regulation of microRNA-652-3p in homoeostasis and disease. J Mol Med (Berl) 2021; 99:755-769. [PMID: 33712860 DOI: 10.1007/s00109-021-02060-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 02/23/2021] [Accepted: 03/01/2021] [Indexed: 12/14/2022]
Abstract
microRNA are small non-coding RNA molecules which inhibit gene expression by binding mRNA, preventing its translation. As important regulators of gene expression, there is increasing interest in microRNAs as potential diagnostic biomarkers and therapeutic targets. Studies investigating the role of one of the miRNA-miR-652-3p-detail diverse roles for this miRNA in normal cell homoeostasis and disease states, including cancers, cardiovascular disease, mental health, and central nervous system diseases. Here, we review recent literature surrounding miR-652-3p, discussing its known target genes and their relevance to disease progression. These studies demonstrate that miR-652-3p targets LLGL1 and ZEB1 to modulate cell polarity mechanisms, with impacts on cancer metastasis and asymmetric cell division. Inhibition of the NOTCH ligand JAG1 by miR-652-3p can have diverse effects on angiogenesis and immune cell regulation. Investigation of miR-652-3p and other dysregulated miRNAs identified a number of pathways potentially regulated by miR-652-3p. This review demonstrates that miR-652-3p has great promise as a diagnostic or therapeutic target due to its activity across multiple cellular systems.
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Affiliation(s)
- Maxwell T Stevens
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia
| | - Bernadette M Saunders
- School of Life Sciences, Faculty of Science, University of Technology Sydney, Sydney, NSW, Australia.
- Centenary Institute, The University of Sydney, Sydney, NSW, Australia.
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11
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SK4 oncochannels regulate calcium entry and promote cell migration in KRAS-mutated colorectal cancer. Cell Calcium 2021; 96:102384. [PMID: 33676318 DOI: 10.1016/j.ceca.2021.102384] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 02/07/2021] [Accepted: 02/22/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND Colorectal cancer (CRC) metastases are the main cause of CRC mortality. Intracellular Ca2+ regulates cell migration and invasion, key factors for metastases. Ca2+ also activates Ca2+-dependent potassium channels which in turn affect Ca2+ driving force. We have previously reported that the expression of the Ca2+ activated potassium channel KCNN4 (SK4) is higher in CRC primary tumors compared to normal tissues. Here, we aimed to investigate the role of SK4 in the physiology of CRC. RESULTS SK4 protein expression is enhanced in CRC tissues compared to normal colon tissues, with a higher level of KCNN4 in CRC patients with KRAS mutations. At the cellular level, we found that SK4 regulates the membrane potential of HCT116 cells. We also found that its inhibition reduced store operated Ca2+ entry (SOCE) and constitutive Ca2+ entry (CCE), while reducing cell migration. We also found that the activity of SK4 is linked to resistance pathways such as KRAS mutation and the expression of NRF2 and HIF-1α. In addition, the pharmacological inhibition of SK4 reduced intracellular reactive oxygen species (ROS) production, NRF2 expression and HIF1α stabilization. CONCLUSION Our results suggest that SK4 contributes to colorectal cancer cell migration and invasion by modulating both Ca2+ entry and ROS regulation. Therefore, SK4 could be a potential target to reduce metastasis in KRAS-mutated CRC.
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12
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Tiffner A, Derler I. Molecular Choreography and Structure of Ca 2+ Release-Activated Ca 2+ (CRAC) and K Ca2+ Channels and Their Relevance in Disease with Special Focus on Cancer. MEMBRANES 2020; 10:E425. [PMID: 33333945 PMCID: PMC7765462 DOI: 10.3390/membranes10120425] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 12/04/2020] [Accepted: 12/07/2020] [Indexed: 12/16/2022]
Abstract
Ca2+ ions play a variety of roles in the human body as well as within a single cell. Cellular Ca2+ signal transduction processes are governed by Ca2+ sensing and Ca2+ transporting proteins. In this review, we discuss the Ca2+ and the Ca2+-sensing ion channels with particular focus on the structure-function relationship of the Ca2+ release-activated Ca2+ (CRAC) ion channel, the Ca2+-activated K+ (KCa2+) ion channels, and their modulation via other cellular components. Moreover, we highlight their roles in healthy signaling processes as well as in disease with a special focus on cancer. As KCa2+ channels are activated via elevations of intracellular Ca2+ levels, we summarize the current knowledge on the action mechanisms of the interplay of CRAC and KCa2+ ion channels and their role in cancer cell development.
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Affiliation(s)
| | - Isabella Derler
- Institute of Biophysics, JKU Life Science Center, Johannes Kepler University Linz, A-4020 Linz, Austria;
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13
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Development of pyrene-based fluorescent ether lipid as inhibitor of SK3 ion channels. Eur J Med Chem 2020; 209:112894. [PMID: 33049604 DOI: 10.1016/j.ejmech.2020.112894] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/04/2020] [Accepted: 09/24/2020] [Indexed: 01/11/2023]
Abstract
We report the synthesis of three bioactive pyrene-based fluorescent analogues of Ohmline which is the most efficient and selective inhibitor of SK3 ion channel. The interaction of these Ohmline-pyrene (OP1-3) with liposomes of different composition reveals that only OP2 and OP3 are readily integrated into liposomes. Fluorescence measurements indicate that, depending on their concentration, OP2 and OP3 exist either as monomer or as a mixture of monomer and excimers within the liposome bilayer. Among the three Ohmline Pyrene compounds (OP1-3) only OP2 is able to reduce SK3 currents and is the first efficient fluorescent modulator of SK3 channel as revealed by patch clamp measurements (- 71.3 ± 13.3% at 10 μM) and by its inhibition of SK3-dependent cancer cell migration at (-32.5% ± 4.8% at 1 μM). We also report the first fluorescence study on living breast cancer cells (MDA-MB-231) showing that OP2 is rapidly integrated in bio-membranes followed by cell internalization.
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14
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Mayorga-Flores M, Chantôme A, Melchor-Meneses CM, Domingo I, Titaux-Delgado GA, Galindo-Murillo R, Vandier C, del Río-Portilla F. Novel Blocker of Onco SK3 Channels Derived from Scorpion Toxin Tamapin and Active against Migration of Cancer Cells. ACS Med Chem Lett 2020; 11:1627-1633. [PMID: 32832033 DOI: 10.1021/acsmedchemlett.0c00300] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 07/10/2020] [Indexed: 11/28/2022] Open
Abstract
Peptide-based therapy against cancer is a field of great interest for biomedical developments. Since it was shown that SK3 channels promote cancer cell migration and metastatic development, we started using these channels as targets for the development of antimetastatic drugs. Particularly, tamapin (a peptide found in the venom of the scorpion Mesobuthus tamulus) is the most specific toxin against the SK2 channel currently known. Considering this fact, we designed diverse tamapin mutants based on three different hypotheses to discover a new potent molecule to block SK3 channels. We performed in vitro studies to evaluate this new toxin derivative inhibitor of cancer cell migration. Our results can be used to generate a new tamapin-based therapy against cancer cells that express SK3 channels.
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Affiliation(s)
- Marlen Mayorga-Flores
- Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, 04510 Ciudad de México, Mexico
| | - Aurélie Chantôme
- N2C UMR 1069, University of Tours, INSERM, Faculté de Pharmacie, Calciscreen Platform, 37032 Tours, France
| | - Carolina Monserrath Melchor-Meneses
- Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, 04510 Ciudad de México, Mexico
| | - Isabelle Domingo
- N2C UMR 1069, University of Tours, INSERM, Calciscreen Platform, 37032 Tours, France
| | - Gustavo Alfredo Titaux-Delgado
- Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, 04510 Ciudad de México, Mexico
| | - Rodrigo Galindo-Murillo
- Department of Medicinal Chemistry, L. S. Skaggs Pharmacy Institute, University of Utah, Salt Lake City, Utah 84112, United States
| | - Christophe Vandier
- N2C UMR 1069, University of Tours, INSERM, Calciscreen Platform, 37032 Tours, France
| | - Federico del Río-Portilla
- Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior s/n, Ciudad Universitaria, 04510 Ciudad de México, Mexico
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15
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Amador-Muñoz D, Gutiérrez ÁM, Payán-Gómez C, Matheus LM. In silico and in vitro analysis of cation-activated potassium channels in human corneal endothelial cells. Exp Eye Res 2020; 197:108114. [PMID: 32561484 DOI: 10.1016/j.exer.2020.108114] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Revised: 06/02/2020] [Accepted: 06/07/2020] [Indexed: 12/31/2022]
Abstract
The corneal endothelium is the inner cell monolayer involved in the maintenance of corneal transparence by the generation of homeostatic dehydration. The glycosaminoglycans of the corneal stroma develop a continuous swelling pressure that should be counteracted by the corneal endothelial cells through active transport mechanisms to move the water to the anterior chamber. Protein transporters for sodium (Na+), potassium (K+), chloride (Cl-) and bicarbonate (HCO3-) are involved in this endothelial "pump function", however despite its physiological importance, the efflux mechanism is not completely understood. There is experimental evidence describing transendothelial diffusion of water in the absence of osmotic gradients. Therefore, it is important to get a deeper understanding of alternative models that drive the fluid transport across the endothelium such as the electrochemical gradients. Three transcriptomic datasets of the corneal endothelium were used in this study to analyze the expression of genes that encode proteins that participate in the transport and the reestablishment of the membrane potential across the semipermeable endothelium. Subsequently, the expression of the identified channels was validated in vitro both at mRNA and protein levels. The results of this study provide the first evidence of the expression of KCNN2, KCNN3 and KCNT2 genes in the corneal endothelium. Differences among the level of expression of KCNN2, KCNT2 and KCNN4 genes were found in a differentially expressed gene analysis of the dataset. Taken together these results underscore the potential importance of the ionic channels in the pathophysiology of corneal diseases. Moreover, we elucidate novel mechanisms that might be involved in the pivotal dehydrating function of the endothelium and in others physiologic functions of these cells using in silico pathways analysis.
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Affiliation(s)
- Diana Amador-Muñoz
- Neuroscience (NEUROS) Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Carrera 24 No. 63 C 69, P.O 111221, Bogotá, Colombia.
| | - Ángela María Gutiérrez
- Escuela Superior de Oftalmología, Instituto Barraquer de América, Calle 100 No. 18 A 51, Bogotá, Colombia.
| | - César Payán-Gómez
- Department of Biology, Faculty of Natural Sciences, Universidad del Rosario, Carrera 24 No. 63 C 69, Bogotá, P.O 111221, Colombia.
| | - Luisa Marina Matheus
- Neuroscience (NEUROS) Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Carrera 24 No. 63 C 69, P.O 111221, Bogotá, Colombia.
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16
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Abstract
As the leading cause of death in cancer, there is an urgent need to develop treatments to target the dissemination of primary tumor cells to secondary organs, known as metastasis. Bioelectric signaling has emerged in the last century as an important controller of cell growth, and with the development of current molecular tools we are now beginning to identify its role in driving cell migration and metastasis in a variety of cancer types. This review summarizes the currently available research for bioelectric signaling in solid tumor metastasis. We review the steps of metastasis and discuss how these can be controlled by bioelectric cues at the level of a cell, a population of cells, and the tissue. The role of ion channel, pump, and exchanger activity and ion flux is discussed, along with the importance of the membrane potential and the relationship between ion flux and membrane potential. We also provide an overview of the evidence for control of metastasis by external electric fields (EFs) and draw from examples in embryogenesis and regeneration to discuss the implications for endogenous EFs. By increasing our understanding of the dynamic properties of bioelectric signaling, we can develop new strategies that target metastasis to be translated into the clinic.
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Affiliation(s)
- Samantha L. Payne
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts
| | - Michael Levin
- Allen Discovery Center, Tufts University, Medford, Massachusetts
| | - Madeleine J. Oudin
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts
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17
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Abstract
Cancer metastasis is the second leading cause of death in the United States. Despite its morbidity, metastasis is an inefficient process that few cells can survive. However, cancer cells can overcome these metastatic barriers via cellular responses to microenvironmental cues, such as through mechanotransduction. This review focuses on the mechanosensitive ion channels TRPV4 and P2X7, and their roles in metastasis, as both channels have been shown to significantly affect tumor cell dissemination. Upon activation, these channels help form tumor neovasculature, promote transendothelial migration, and increase cell motility. Conversely, they have also been linked to forms of cancer cell death dependent upon levels of activation, implying the complex functionality of mechanosensitive ion channels. Understanding the roles of TRPV4, P2X7 and other mechanosensitive ion channels in these processes may reveal new possible drug targets that modify channel function to reduce a tumor's metastatic potential.
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18
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The ion channel activator CyPPA inhibits melanogenesis via the GSK3β/β-catenin pathway. Chem Biol Interact 2019; 300:1-7. [PMID: 30597128 DOI: 10.1016/j.cbi.2018.12.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 12/17/2018] [Accepted: 12/21/2018] [Indexed: 11/24/2022]
Abstract
Research into materials that inhibit melanogenesis in skin has gained interest. Screening for such compounds in B16F10 cells revealed that cyclohexyl-[2-(3,5-dimethyl-pyrazol-1-yl)-6-methyl-pyrimidin-4-yl]-amine (CyPPA), a positive modulator of small-conductance Ca2+-activated K+ channels, is a strong inhibitor of melanogenesis. We investigated the anti-melanogenic activity of CyPPA and the molecular mechanism by which CyPPA reduced melanin production in normal human melanocytes (NHM). CyPPA treatment resulted in a significant concentration-dependent reduction in melanin content without significant cytotoxicity; treatment likewise resulted in a significant time-dependent reduction in tyrosinase (TYR) activity. Treatment with CyPPA also decreased transcription of melanogenesis-related genes, including the gene encoding microphthalmia-associated transcription factor (MITF). In addition, visual evaluation of the MelanoDerm™ human skin model revealed significantly lower melanin content in the CyPPA-treated condition than in the untreated control. CyPPA was determined to modulate glycogen synthase kinase-3β (GSK3β) activity, thereby leading to a decrease in β-catenin/MITF expression. Thus, CyPPA acts as a melanogenesis inhibitor by modulating the GSK3β/β-catenin/MITF pathway.
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19
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Prevarskaya N, Skryma R, Shuba Y. Ion Channels in Cancer: Are Cancer Hallmarks Oncochannelopathies? Physiol Rev 2018; 98:559-621. [PMID: 29412049 DOI: 10.1152/physrev.00044.2016] [Citation(s) in RCA: 277] [Impact Index Per Article: 46.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Genomic instability is a primary cause and fundamental feature of human cancer. However, all cancer cell genotypes generally translate into several common pathophysiological features, often referred to as cancer hallmarks. Although nowadays the catalog of cancer hallmarks is quite broad, the most common and obvious of them are 1) uncontrolled proliferation, 2) resistance to programmed cell death (apoptosis), 3) tissue invasion and metastasis, and 4) sustained angiogenesis. Among the genes affected by cancer, those encoding ion channels are present. Membrane proteins responsible for signaling within cell and among cells, for coupling of extracellular events with intracellular responses, and for maintaining intracellular ionic homeostasis ion channels contribute to various extents to pathophysiological features of each cancer hallmark. Moreover, tight association of these hallmarks with ion channel dysfunction gives a good reason to classify them as special type of channelopathies, namely oncochannelopathies. Although the relation of cancer hallmarks to ion channel dysfunction differs from classical definition of channelopathies, as disease states causally linked with inherited mutations of ion channel genes that alter channel's biophysical properties, in a broader context of the disease state, to which pathogenesis ion channels essentially contribute, such classification seems absolutely appropriate. In this review the authors provide arguments to substantiate such point of view.
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Affiliation(s)
- Natalia Prevarskaya
- INSERM U-1003, Equipe Labellisée par la Ligue Nationale contre le Cancer et LABEX, Université Lille1 , Villeneuve d'Ascq , France ; Bogomoletz Institute of Physiology and International Center of Molecular Physiology, NASU, Kyiv-24, Ukraine
| | - Roman Skryma
- INSERM U-1003, Equipe Labellisée par la Ligue Nationale contre le Cancer et LABEX, Université Lille1 , Villeneuve d'Ascq , France ; Bogomoletz Institute of Physiology and International Center of Molecular Physiology, NASU, Kyiv-24, Ukraine
| | - Yaroslav Shuba
- INSERM U-1003, Equipe Labellisée par la Ligue Nationale contre le Cancer et LABEX, Université Lille1 , Villeneuve d'Ascq , France ; Bogomoletz Institute of Physiology and International Center of Molecular Physiology, NASU, Kyiv-24, Ukraine
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20
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D'Alessandro G, Limatola C, Catalano M. Functional Roles of the Ca2+-activated K+ Channel, KCa3.1, in Brain Tumors. Curr Neuropharmacol 2018; 16:636-643. [PMID: 28707595 PMCID: PMC5997864 DOI: 10.2174/0929867324666170713103621] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/22/2017] [Accepted: 07/12/2017] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Glioblastoma is the most aggressive and deadly brain tumor, with low disease-free period even after surgery and combined radio and chemotherapies. Among the factors contributing to the devastating effect of this tumor in the brain are the elevated proliferation and invasion rate, and the ability to induce a local immunosuppressive environment. The intermediateconductance Ca2+-activated K+ channel KCa3.1 is expressed in glioblastoma cells and in tumorinfiltrating cells. METHODS We first describe the researches related to the role of KCa3.1 channels in the invasion of brain tumor cells and the regulation of cell cycle. In the second part we review the involvement of KCa3.1 channel in tumor-associated microglia cell behaviour. RESULTS In tumor cells, the functional expression of KCa3.1 channels is important to substain cell invasion and proliferation. In tumor infiltrating cells, KCa3.1 channel activity is required to regulate their activation state. Interfering with KCa3.1 activity can be an adjuvant therapeutic approach in addition to classic chemotherapy and radiotherapy, to counteract tumor growth and prolong patient's survival. CONCLUSION In this mini-review we discuss the evidence of the functional roles of KCa3.1 channels in glioblastoma biology.
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Affiliation(s)
- Giuseppina D'Alessandro
- Department of Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy.,IRCCS Neuromed, Pozzilli, Italy
| | - Cristina Limatola
- IRCCS Neuromed, Pozzilli, Italy.,Department of Physiology and Pharmacology, Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Myriam Catalano
- Department of Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy.,IRCCS Neuromed, Pozzilli, Italy
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21
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Liu X, Wei L, Zhao B, Cai X, Dong C, Yin F. Low expression of KCNN3 may affect drug resistance in ovarian cancer. Mol Med Rep 2018; 18:1377-1386. [PMID: 29901154 PMCID: PMC6072180 DOI: 10.3892/mmr.2018.9107] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 04/26/2018] [Indexed: 12/23/2022] Open
Abstract
Drug resistance is a principal contributor to the poor prognosis of ovarian cancer (OC). Therefore, identifying factors that affect drug resistance in OC is critical. In the present study, 51 OC specimens from lab collections were immunohistochemically tested, public data for 489 samples from The Cancer Genome Atlas cohort and 1,656 samples from the Kaplan‑Meier Plotter were downloaded, and data were retrieved from Oncomine. It was identified that the mRNA and protein expression of the potassium calcium‑activated channel subfamily N member 3 (KCNN3) was markedly lower in OC tissues compared with normal tissues, and in drug‑resistant OC tissues compared with sensitive OC tissues. Low KCNN3 expression consistently predicted shorter disease‑free and overall survival (OS). Specifically, low KCNN3 expression predicted shorter OS in 395 patients with low expression levels of mucin‑16. There was additional evidence that KCNN3 expression is mediated by microRNA‑892b. Furthermore, text mining and analyses of protein and gene interactions indicated that KCNN3 affects drug resistance. To the best of the authors' knowledge, this is the first report to associate KCNN3 with poor prognosis and drug resistance in OC. The present findings indicated that KCNN3 is a potential prognostic marker and therapeutic target for OC.
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Affiliation(s)
- Xia Liu
- Key Laboratory of Longevity and Ageing‑Related Disease of Chinese Ministry of Education, Centre for Translational Medicine and School of Preclinical Medicine, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Luwei Wei
- Department of Gynecologic Oncology, The Affiliated Tumor Hospital, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Bingbing Zhao
- Department of Gynecologic Oncology, The Affiliated Tumor Hospital, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Xiangxue Cai
- Key Laboratory of Longevity and Ageing‑Related Disease of Chinese Ministry of Education, Centre for Translational Medicine and School of Preclinical Medicine, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Caihua Dong
- Key Laboratory of Longevity and Ageing‑Related Disease of Chinese Ministry of Education, Centre for Translational Medicine and School of Preclinical Medicine, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
| | - Fuqiang Yin
- Life Sciences Institute, Guangxi Medical University, Nanning, Guangxi 530021, P.R. China
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22
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Roy J, Mallick B. Investigating piwi-interacting RNA regulome in human neuroblastoma. Genes Chromosomes Cancer 2018. [PMID: 29516567 DOI: 10.1002/gcc.22535] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Remarkable attempts have been exercised in recent years using high-throughput technologies to identify and decipher the functions of piRNAs in various abnormalities like cancer. However, piRNAs in the oncogenesis of neuroblastoma (NB) has not been reported yet even after their illustrated roles in neurological processes. Therefore, we investigated the piRNA transcriptome in IMR-32 and SH-SY-5Y NB cell lines by employing high-throughput next-generation sequencing after confirming the expression of three associated PIWILs both at mRNAs and protein level by qRT-PCR and immunofluroscence, respectively. We identified a common pool of 525 piRNAs of 26-32 nts long expressed in both the cell lines. The possible functions of these piRNAs were charted by predicting their targeting on retrotransposon-containing 1769 mRNAs differentially expressed in 39 NB cell lines followed by network and pathway analysis. The analysis revealed that majority of the target binding sites in NB fall within retrotransposons residing within the 3'UTR of target mRNA transcripts like miRNA-targets. Further, we validated the expression of key piRNAs and their target genes enriched in cancer-related networks, pathways and biological processes which are hypothesized to play crucial roles in neoplastic events of NB. We believe that the evidence of piRNAs in human NB and their possible contribution to its pathogenesis reported in this work will open up new exciting possibilities for piRNA-mediated therapeutics for this malignancy.
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Affiliation(s)
- Jyoti Roy
- RNAi and Functional Genomics Lab., Department of Life Science, National Institute of Technology, Rourkela, Odisha, 769008, India.,Molecular Biology of the Cell II, German Cancer Research Center (DKFZ), DKFZ-Zentrum Für Molekulare Biologie Der Universität Heidelberg (ZMBH) Alliance, Heidelberg, 69120, Germany
| | - Bibekanand Mallick
- RNAi and Functional Genomics Lab., Department of Life Science, National Institute of Technology, Rourkela, Odisha, 769008, India
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23
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Guéguinou M, Harnois T, Crottes D, Uguen A, Deliot N, Gambade A, Chantôme A, Haelters JP, Jaffrès PA, Jourdan ML, Weber G, Soriani O, Bougnoux P, Mignen O, Bourmeyster N, Constantin B, Lecomte T, Vandier C, Potier-Cartereau M. SK3/TRPC1/Orai1 complex regulates SOCE-dependent colon cancer cell migration: a novel opportunity to modulate anti-EGFR mAb action by the alkyl-lipid Ohmline. Oncotarget 2017; 7:36168-36184. [PMID: 27102434 PMCID: PMC5094991 DOI: 10.18632/oncotarget.8786] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 03/28/2016] [Indexed: 12/20/2022] Open
Abstract
Background Barely 10-20% of patients with metastatic colorectal cancer (mCRC) receive a clinical benefit from the use of anti-EGFR monoclonal antibodies (mAbs). We hypothesized that this could depends on their efficiency to reduce Store Operated Calcium Entry (SOCE) that are known to enhance cancer cells. Results In the present study, we demonstrate that SOCE promotes migration of colon cancer cell following the formation of a lipid raft ion channel complex composed of TRPC1/Orai1 and SK3 channels. Formation of this complex is stimulated by the phosphorylation of the reticular protein STIM1 by EGF and activation of the Akt pathway. Our data show that, in a positive feedback loop SOCE activates both Akt pathway and SK3 channel activity which lead to SOCE amplification. This amplification occurs through the activation of Rac1/Calpain mediated by Akt. We also show that Anti-EGFR mAbs can modulate SOCE and cancer cell migration through the Akt pathway. Interestingly, the alkyl-lipid Ohmline, which we previously showed to be an inhibitor of SK3 channel, can dissociated the lipid raft ion channel complex through decreased phosphorylation of Akt and modulation of mAbs action. Conclusions This study demonstrates that the inhibition of the SOCE-dependent colon cancer cell migration trough SK3/TRPC1/Orai1 channel complex by the alkyl-lipid Ohmline may be a novel strategy to modulate Anti-EGFR mAb action in mCRC.
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Affiliation(s)
- Maxime Guéguinou
- INSERM UMR 1069, Université de Tours, Tours, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France
| | - Thomas Harnois
- Equipe ERL 7368, CNRS, Université de Poitiers, Poitiers, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France
| | - David Crottes
- Department of Physiology, University of California, San Francisco, San Francisco, CA, USA
| | - Arnaud Uguen
- INSERM-UMR 1078 Université de Brest, Brest, France.,CHRU Brest, Service d'Anatomie et Cytologie Pathologiques, Brest, France
| | - Nadine Deliot
- Equipe ERL 7368, CNRS, Université de Poitiers, Poitiers, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France
| | | | - Aurélie Chantôme
- INSERM UMR 1069, Université de Tours, Tours, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France
| | - Jean Pierre Haelters
- CNRS-UMR 6521-Université de Brest, Brest, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France
| | - Paul Alain Jaffrès
- CNRS-UMR 6521-Université de Brest, Brest, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France
| | - Marie Lise Jourdan
- INSERM UMR 1069, Université de Tours, Tours, France.,CHRU Tours, Tours, France
| | | | - Olivier Soriani
- CNRS UMR 7299, INSERM-UMR 1099, Université de Nice Sophia-Antipolis, Nice, France
| | - Philippe Bougnoux
- INSERM UMR 1069, Université de Tours, Tours, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France.,CHRU Tours, Tours, France
| | - Olivier Mignen
- INSERM-UMR 1078 Université de Brest, Brest, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France
| | - Nicolas Bourmeyster
- Equipe ERL 7368, CNRS, Université de Poitiers, Poitiers, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France
| | - Bruno Constantin
- Equipe ERL 7368, CNRS, Université de Poitiers, Poitiers, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France
| | - Thierry Lecomte
- GICC-UMR 7292 Université de Tours, Tours, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France.,CHRU Tours, Tours, France
| | - Christophe Vandier
- INSERM UMR 1069, Université de Tours, Tours, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France
| | - Marie Potier-Cartereau
- INSERM UMR 1069, Université de Tours, Tours, France.,Ion Channels Network and Cancer-Cancéropôle Grand Ouest (IC-CGO), France
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24
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Herrera F, Sevrain CM, Jaffrès PA, Couthon H, Grélard A, Dufourc EJ, Chantôme A, Potier-Cartereau M, Vandier C, Bouchet AM. Singular Interaction between an Antimetastatic Agent and the Lipid Bilayer: The Ohmline Case. ACS OMEGA 2017; 2:6361-6370. [PMID: 30023517 PMCID: PMC6045331 DOI: 10.1021/acsomega.7b00936] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 09/08/2017] [Indexed: 06/08/2023]
Abstract
SK3 channels are abnormaly expressed in metastatic cells, and Ohmline (OHM), an ether lipid, has been shown to reduce the activity of SK3 channels and the migration capacity of cancer cells. OHM incorporation into the plasma membrane is proposed to dissociate the protein complex formed between SK3 and Orai1, a potassium and a calcium channel, respectively, and would lead to a modification in the lipid environment of both the proteins. Here, we report the synthesis of deuterated OHM that affords the determination, through solid-state NMR, of its entire partitioning into membranes mimicking the SK3 environment. Use of deuterated lipids affords the demonstration of an OHM-induced membrane disordering, which is dose-dependent and increases with increasing amounts of cholesterol (CHOL). Molecular dynamics simulations comfort the disordering action and show that OHM interacts with the carbonyl and phosphate groups of stearoylphosphatidylcholine and sphingomyelin and to a minor extent with CHOL. OHM is thus proposed to remove the CHOL OH moieties away from their main binding sites, forcing a new rearrangement with other lipid groups. Such an interaction takes its origin at the lipid-water interface, but it propagates toward the entire lipid molecules and leads to a cooperative destabilization of the lipid acyl chains, that is, membrane disordering. The consequences of this reorganization of the lipid phases are discussed in the context of the OHM-induced inhibition of SK3 channels.
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Affiliation(s)
- Fernando
E. Herrera
- Physics
Department, Universidad Nacional del Litoral,
Ciudad Universitaria, 3000 Santa Fe, Argentina
| | - Charlotte M. Sevrain
- Université
de Brest, CEMCA, UMR CNRS 6521, IBSAM, 6, Avenue Victor le Gorgeu, 29238 Brest, France
- Network
and Cancer-Canceropole Grand Ouest, (IC-CGO), Maison de la Recherche
en Santé, 63 Quai
Magellan, 44000 Nantes, France
| | - Paul-Alain Jaffrès
- Université
de Brest, CEMCA, UMR CNRS 6521, IBSAM, 6, Avenue Victor le Gorgeu, 29238 Brest, France
- Network
and Cancer-Canceropole Grand Ouest, (IC-CGO), Maison de la Recherche
en Santé, 63 Quai
Magellan, 44000 Nantes, France
| | - Hélène Couthon
- Université
de Brest, CEMCA, UMR CNRS 6521, IBSAM, 6, Avenue Victor le Gorgeu, 29238 Brest, France
- Network
and Cancer-Canceropole Grand Ouest, (IC-CGO), Maison de la Recherche
en Santé, 63 Quai
Magellan, 44000 Nantes, France
| | - Axelle Grélard
- Université
Bordeaux, Institute of Chemistry & Biology of Membranes &
Nanoobjects, UMR5248 CNRS, Allée de Geoffroy St Hilaire Bât B14 Pessac, 33600 Bordeaux, France
| | - Erick J. Dufourc
- Université
Bordeaux, Institute of Chemistry & Biology of Membranes &
Nanoobjects, UMR5248 CNRS, Allée de Geoffroy St Hilaire Bât B14 Pessac, 33600 Bordeaux, France
| | - Aurélie Chantôme
- Network
and Cancer-Canceropole Grand Ouest, (IC-CGO), Maison de la Recherche
en Santé, 63 Quai
Magellan, 44000 Nantes, France
- Université
François Rabelais de Tours, Nutrition, Croissance et Cancer, Inserm UMR1069, 10 Boulevard Tonnellé Bât. Dutrochet, 2ème étage, 37032 Tours, France
| | - Marie Potier-Cartereau
- Network
and Cancer-Canceropole Grand Ouest, (IC-CGO), Maison de la Recherche
en Santé, 63 Quai
Magellan, 44000 Nantes, France
- Université
François Rabelais de Tours, Nutrition, Croissance et Cancer, Inserm UMR1069, 10 Boulevard Tonnellé Bât. Dutrochet, 2ème étage, 37032 Tours, France
| | - Christophe Vandier
- Network
and Cancer-Canceropole Grand Ouest, (IC-CGO), Maison de la Recherche
en Santé, 63 Quai
Magellan, 44000 Nantes, France
- Université
François Rabelais de Tours, Nutrition, Croissance et Cancer, Inserm UMR1069, 10 Boulevard Tonnellé Bât. Dutrochet, 2ème étage, 37032 Tours, France
| | - Ana M. Bouchet
- Network
and Cancer-Canceropole Grand Ouest, (IC-CGO), Maison de la Recherche
en Santé, 63 Quai
Magellan, 44000 Nantes, France
- Université
François Rabelais de Tours, Nutrition, Croissance et Cancer, Inserm UMR1069, 10 Boulevard Tonnellé Bât. Dutrochet, 2ème étage, 37032 Tours, France
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25
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Ca 2+ protein alpha 1D of CaV1.3 regulates intracellular calcium concentration and migration of colon cancer cells through a non-canonical activity. Sci Rep 2017; 7:14199. [PMID: 29079724 PMCID: PMC5660277 DOI: 10.1038/s41598-017-14230-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 10/03/2017] [Indexed: 01/05/2023] Open
Abstract
It is generally accepted that voltage-gated Ca2+ channels, CaV, regulate Ca2+ homeostasis in excitable cells following plasma membrane depolarization. Here, we show that the Ca2+ protein α1D of CaV1.3 channel is overexpressed in colorectal cancer biopsies compared to normal tissues. Gene silencing experiments targeting α1D reduced the migration and the basal cytosolic Ca2+ concentration of HCT116 colon cancer cell line and modified the cytosolic Ca2+ oscillations induced by the sodium/calcium exchanger NCX1/3 working in its reverse mode. Interestingly, NCX1/3 regulated membrane potential of HCT116 cells only when α1D was silenced, and blocking NCX1/3 increased cytosolic Ca2+ concentration and cell migration. However, membrane depolarization did not induce an increase in intracellular Ca2+. Patch-clamp experiments clearly showed that the inward Ca2+ current was absent. Finally, flow cytometry and immunofluorescence studies showed that α1D protein was localized at the plasma membrane, in cytosol and cell nuclei. Altogether, we uncover a novel signaling pathway showing that α1D is involved in the regulation of Ca2+ homeostasis and cell migration by a mechanism independent of its plasma membrane canonical function but that involved plasma membrane Na+/Ca2+ exchanger.
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26
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Pchelintseva E, Djamgoz MBA. Mesenchymal stem cell differentiation: Control by calcium-activated potassium channels. J Cell Physiol 2017; 233:3755-3768. [PMID: 28776687 DOI: 10.1002/jcp.26120] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 08/01/2017] [Indexed: 12/12/2022]
Abstract
Mesenchymal stem cells (MSCs) are widely used in modern medicine for which understanding the mechanisms controlling their differentiation is fundamental. Ion channels offer novel insights to this process because of their role in modulating membrane potential and intracellular milieu. Here, we evaluate the contribution of calcium-activated potassium (KCa ) channels to the three main components of MSC differentiation: initiation, proliferation, and migration. First, we demonstrate the importance of the membrane potential (Vm ) and the apparent association of hyperpolarization with differentiation. Of KCa subtypes, most evidence points to activity of big-conductance channels in inducing initiation. On the other hand, intermediate-conductance currents have been shown to promote progression through the cell cycle. While there is no information on the role of KCa channels in migration of MSCs, work from other stem cells and cancer cells suggest that intermediate-conductance and to a lesser extent big-conductance channels drive migration. In all cases, these effects depend on species, tissue origin and lineage. Finally, we present a conceptual model that demonstrates how KCa activity could influence differentiation by regulating Vm and intracellular Ca2+ oscillations. We conclude that KCa channels have significant involvement in MSC differentiation and could potentially enable novel tissue engineering approaches and therapies.
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Affiliation(s)
- Ekaterina Pchelintseva
- Department of Life Sciences, Imperial College London, South Kensington Campus, Neuroscience Solution to Cancer Research Group, London, UK.,Department of Bioengineering, Imperial College London, South Kensington Campus, London, UK
| | - Mustafa B A Djamgoz
- Department of Life Sciences, Imperial College London, South Kensington Campus, Neuroscience Solution to Cancer Research Group, London, UK
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27
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Gueguinou M, Crottès D, Chantôme A, Rapetti-Mauss R, Potier-Cartereau M, Clarysse L, Girault A, Fourbon Y, Jézéquel P, Guérin-Charbonnel C, Fromont G, Martin P, Pellissier B, Schiappa R, Chamorey E, Mignen O, Uguen A, Borgese F, Vandier C, Soriani O. The SigmaR1 chaperone drives breast and colorectal cancer cell migration by tuning SK3-dependent Ca 2+ homeostasis. Oncogene 2017; 36:3640-3647. [PMID: 28114279 DOI: 10.1038/onc.2016.501] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2016] [Revised: 11/19/2016] [Accepted: 11/28/2016] [Indexed: 12/21/2022]
Abstract
The remodeling of calcium homeostasis contributes to the cancer hallmarks and the molecular mechanisms involved in calcium channel regulation in tumors remain to be characterized. Here, we report that SigmaR1, a stress-activated chaperone, is required to increase calcium influx by triggering the coupling between SK3, a Ca2+-activated K+ channel (KCNN3) and the voltage-independent calcium channel Orai1. We show that SigmaR1 physically binds SK3 in BC cells. Inhibition of SigmaR1 activity, either by molecular silencing or by the use of sigma ligand (igmesine), decreased SK3 current and Ca2+ entry in breast cancer (BC) and colorectal cancer (CRC) cells. Interestingly, SigmaR1 inhibition diminished SK3 and/or Orai1 levels in lipid nanodomains isolated from BC cells. Analyses of tissue microarray from CRC patients showed higher SigmaR1 expression levels in cancer samples and a correlation with tumor grade. Moreover, the exploration of a cohort of 4937 BC patients indicated that high expression of SigmaR1 and Orai1 channels was significantly correlated to a lower overall survival. As the SK3/Orai1 tandem drives invasive process in CRC and bone metastasis progression in BC, our results may inaugurate innovative therapeutic approaches targeting SigmaR1 to control the remodeling of Ca2+ homeostasis in epithelial cancers.
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Affiliation(s)
- M Gueguinou
- Inserm-University U1069 Nutrition, Croissance et Cancer, Tours, France
| | - D Crottès
- Université Côte d'Azur, CNRS, Inserm, iBV, France
| | - A Chantôme
- Inserm-University U1069 Nutrition, Croissance et Cancer, Tours, France
| | | | | | - L Clarysse
- Inserm-University U1069 Nutrition, Croissance et Cancer, Tours, France
| | - A Girault
- Inserm-University U1069 Nutrition, Croissance et Cancer, Tours, France
| | - Y Fourbon
- Inserm-University U1069 Nutrition, Croissance et Cancer, Tours, France
| | - P Jézéquel
- Unité de Bioinfomique, Institut de Cancérologie de L'Ouest - René Gauducheau, Centre de Recherche en Cancérologie, UMR-INSERM 892, St Herblain, France
| | - C Guérin-Charbonnel
- Unité de Bioinfomique, Institut de Cancérologie de L'Ouest - René Gauducheau, Centre de Recherche en Cancérologie, UMR-INSERM 892, St Herblain, France
| | - G Fromont
- Inserm-University U1069 Nutrition, Croissance et Cancer, Tours, France
- Service d'Anatomie Pathologique, Hopital Bretonneau, CHRU Tours, Tours, France
| | - P Martin
- Université Côte d'Azur, CNRS, Inserm, iBV, France
| | - B Pellissier
- Université Côte d'Azur, CNRS, Inserm, iBV, France
| | - R Schiappa
- Unité d'Epidémiologie et Biostatistiques (UEB), Centre Antoine Lacassagne, Nice, France
| | - E Chamorey
- Unité d'Epidémiologie et Biostatistiques (UEB), Centre Antoine Lacassagne, Nice, France
| | - O Mignen
- Department of Pathology, Inserm U1078, Brest University Hospital, Brest, France
| | - A Uguen
- Department of Pathology, Inserm U1078, Brest University Hospital, Brest, France
| | - F Borgese
- Université Côte d'Azur, CNRS, Inserm, iBV, France
| | - C Vandier
- Inserm-University U1069 Nutrition, Croissance et Cancer, Tours, France
| | - O Soriani
- Université Côte d'Azur, CNRS, Inserm, iBV, France
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28
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Mignen O, Constantin B, Potier-Cartereau M, Penna A, Gautier M, Guéguinou M, Renaudineau Y, Shoji KF, Félix R, Bayet E, Buscaglia P, Debant M, Chantôme A, Vandier C. Constitutive calcium entry and cancer: updated views and insights. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2017; 46:395-413. [PMID: 28516266 DOI: 10.1007/s00249-017-1216-8] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 03/10/2017] [Accepted: 04/26/2017] [Indexed: 12/20/2022]
Abstract
Tight control of basal cytosolic Ca2+ concentration is essential for cell survival and to fine-tune Ca2+-dependent cell functions. A way to control this basal cytosolic Ca2+ concentration is to regulate membrane Ca2+ channels including store-operated Ca2+ channels and secondary messenger-operated channels linked to G-protein-coupled or tyrosine kinase receptor activation. Orai, with or without its reticular STIM partner and Transient Receptor Potential (TRP) proteins, were considered to be the main Ca2+ channels involved. It is well accepted that, in response to cell stimulation, opening of these Ca2+ channels contributes to Ca2+ entry and the transient increase in cytosolic Ca2+ concentration involved in intracellular signaling. However, in various experimental conditions, Ca2+ entry and/or Ca2+ currents can be recorded at rest, without application of any experimental stimulation. This led to the proposition that some plasma membrane Ca2+ channels are already open/activated in basal condition, contributing therefore to constitutive Ca2+ entry. This article focuses on direct and indirect observations supporting constitutive activity of channels belonging to the Orai and TRP families and on the mechanisms underlying their basal/constitutive activities.
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Affiliation(s)
- Olivier Mignen
- Inserm UMR 1078 IFR148 Université de Bretagne Occidentale, Brest, France
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France
| | - Bruno Constantin
- STIM, ERL 7368 CNRS Université de Poitiers, Poitiers, France
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France
| | - Marie Potier-Cartereau
- Inserm/University of Tours U1069, Nutrition-Croissance et Cancer (N2C), 37032, Tours, France
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France
| | - Aubin Penna
- IRSET, Inserm U1085, University of Rennes 1, 36043, Rennes, France
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France
| | - Mathieu Gautier
- EA4667, Université de Picardie Jules Verne, 80039, Amiens, France
| | - Maxime Guéguinou
- Inserm/University of Tours U1069, Nutrition-Croissance et Cancer (N2C), 37032, Tours, France
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France
| | - Yves Renaudineau
- EA 2216, Inserm ESPRI, ERI 29, Brest, France
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France
| | - Kenji F Shoji
- IRSET, Inserm U1085, University of Rennes 1, 36043, Rennes, France
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France
| | - Romain Félix
- Inserm/University of Tours U1069, Nutrition-Croissance et Cancer (N2C), 37032, Tours, France
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France
| | - Elsa Bayet
- STIM, ERL 7368 CNRS Université de Poitiers, Poitiers, France
- IRSET, Inserm U1085, University of Rennes 1, 36043, Rennes, France
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France
| | - Paul Buscaglia
- Inserm UMR 1078 IFR148 Université de Bretagne Occidentale, Brest, France
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France
| | - Marjolaine Debant
- Inserm UMR 1078 IFR148 Université de Bretagne Occidentale, Brest, France
- EA 2216, Inserm ESPRI, ERI 29, Brest, France
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France
| | - Aurélie Chantôme
- Inserm/University of Tours U1069, Nutrition-Croissance et Cancer (N2C), 37032, Tours, France
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France
| | - Christophe Vandier
- Inserm/University of Tours U1069, Nutrition-Croissance et Cancer (N2C), 37032, Tours, France.
- Network "Ion Channels and Cancer-Canceropôle Grand Ouest", (IC-CGO), Grand Ouest, France.
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29
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Mahas A, Potluri K, Kent MN, Naik S, Markey M. Copy number variation in archival melanoma biopsies versus benign melanocytic lesions. Cancer Biomark 2017; 16:575-97. [PMID: 27002761 DOI: 10.3233/cbm-160600] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Skin melanocytes can give rise to benign and malignant neoplasms. Discrimination of an early melanoma from an unusual/atypical benign nevus can represent a significant challenge. However, previous studies have shown that in contrast to benign nevi, melanoma demonstrates pervasive chromosomal aberrations. OBJECTIVE This substantial difference between melanoma and benign nevi can be exploited to discriminate between melanoma and benign nevi. METHODS Array-comparative genomic hybridization (aCGH) is an approach that can be used on DNA extracted from formalin-fixed paraffin-embedded (FFPE) tissues to assess the entire genome for the presence of changes in DNA copy number. In this study, high resolution, genome-wide single-nucleotide polymorphism (SNP) arrays were utilized to perform comprehensive and detailed analyses of recurrent copy number aberrations in 41 melanoma samples in comparison with 21 benign nevi. RESULTS We found statistically significant copy number gains and losses within melanoma samples. Some of the identified aberrations are previously implicated in melanoma. Moreover, novel regions of copy number alterations were identified, revealing new candidate genes potentially involved in melanoma pathogenesis. CONCLUSIONS Taken together, these findings can help improve melanoma diagnosis and introduce novel melanoma therapeutic targets.
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Affiliation(s)
- Ahmed Mahas
- Department of Biochemistry and Molecular Biology, Wright State University, Dayton, OH, USA
| | - Keerti Potluri
- Department of Biochemistry and Molecular Biology, Wright State University, Dayton, OH, USA
| | - Michael N Kent
- Department of Dermatology, Wright State University Boonshoft School of Medicine, Dayton, OH, USA.,Dermatopathology Laboratory of Central States, Dayton, OH, USA
| | - Sameep Naik
- Dermatopathology Laboratory of Central States, Dayton, OH, USA
| | - Michael Markey
- Department of Biochemistry and Molecular Biology, Wright State University, Dayton, OH, USA
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30
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Kumar S, Liu X, Borondics F, Xiao Q, Feng R, Goormaghtigh E, Nikolajeff F. Insights into Biochemical Alteration in Cancer-Associated Fibroblasts by using Novel Correlative Spectroscopy. ChemistryOpen 2017; 6:149-157. [PMID: 28168160 PMCID: PMC5288759 DOI: 10.1002/open.201600102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 12/01/2016] [Indexed: 01/11/2023] Open
Abstract
The microenvironment of a tumor changes chemically and morphologically during cancer progression. Cancer‐stimulated fibroblasts promote tumor growth, however, the mechanism of the transition to a cancer‐stimulated fibroblast remains elusive. Here, the multi‐modal spectroscopic methods Fourier transform infrared imaging (FTIRI), X‐ray absorption spectroscopy (XAS) and X‐ray fluorescence imaging (XFI) are used to characterize molecular and atomic alterations that occur in cancer‐stimulated fibroblasts. In addition to chemical changes in lipids (olefinic and acyl chain) and protein aggregation observed with FTIRI, a new infrared biomarker for oxidative stress in stimulated fibroblasts is reported. Oxidative stress is observed to cause lipid peroxidation, which leads to the appearance of a new band at 1721 cm−1, assigned to 4‐hydroxynonenal. Complementary to FTIRI, XFI is well suited to determining atom concentrations and XAS can reveal the speciation of individual elements. XFI reveals increased concentrations of P, S, K, Ca within stimulated fibroblasts. Furthermore, XAS studies reveal alterations in the speciation of S and Ca in stimulated fibroblasts, which might provide insight into the mechanisms of cancer progression. Using XFI, not only is the concentration change of individual elements observed, but also the subcellular localization. This study demonstrates the wealth of biochemical information provided by a multi‐modal imaging approach and highlights new avenues for future research into the microenvironment of breast tumors.
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Affiliation(s)
- Saroj Kumar
- Berzelii Technology Centre for Neurodiagnostics Department of Engineering Science Uppsala University Uppsala 75105 Sweden; Department of Biophysics All India Institute of Medical Sciences New Delhi 110029 India; Canadian Light Source Saskatoon SK S7N 2V3 Canada
| | - Xia Liu
- Canadian Light Source Saskatoon SK S7N 2V3 Canada
| | | | - Qunfeng Xiao
- Canadian Light Source Saskatoon SK S7N 2V3 Canada
| | - Renfei Feng
- Canadian Light Source Saskatoon SK S7N 2V3 Canada
| | - Erik Goormaghtigh
- Structure and Function of Biological Membranes (SFMB) Université Libre de Bruxelles Belgium
| | - Fredrik Nikolajeff
- Berzelii Technology Centre for Neurodiagnostics Department of Engineering Science Uppsala University Uppsala 75105 Sweden
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31
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Berthe W, Sevrain CM, Chantôme A, Bouchet AM, Gueguinou M, Fourbon Y, Potier-Cartereau M, Haelters JP, Couthon-Gourvès H, Vandier C, Jaffrès PA. New Disaccharide-Based Ether Lipids as SK3 Ion Channel Inhibitors. ChemMedChem 2016; 11:1531-9. [DOI: 10.1002/cmdc.201600147] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2016] [Revised: 05/09/2016] [Indexed: 01/20/2023]
Affiliation(s)
- Wilfried Berthe
- Université de Brest; CEMCA, CNRS UMR 6521, IBSAM; 6 Avenue Le Gorgeu 29238 Brest France
- Network “Ion Channels and Cancer - Canceropole Grand Ouest”, (IC-CGO); France
| | - Charlotte M. Sevrain
- Université de Brest; CEMCA, CNRS UMR 6521, IBSAM; 6 Avenue Le Gorgeu 29238 Brest France
- Network “Ion Channels and Cancer - Canceropole Grand Ouest”, (IC-CGO); France
| | - Aurélie Chantôme
- INSERM, UMR 1069; Université François Rabelais; Tours 37032 France
- Network “Ion Channels and Cancer - Canceropole Grand Ouest”, (IC-CGO); France
| | - Ana Maria Bouchet
- INSERM, UMR 1069; Université François Rabelais; Tours 37032 France
- Network “Ion Channels and Cancer - Canceropole Grand Ouest”, (IC-CGO); France
| | - Maxime Gueguinou
- INSERM, UMR 1069; Université François Rabelais; Tours 37032 France
- Network “Ion Channels and Cancer - Canceropole Grand Ouest”, (IC-CGO); France
| | - Yann Fourbon
- INSERM, UMR 1069; Université François Rabelais; Tours 37032 France
- Network “Ion Channels and Cancer - Canceropole Grand Ouest”, (IC-CGO); France
| | - Marie Potier-Cartereau
- INSERM, UMR 1069; Université François Rabelais; Tours 37032 France
- Network “Ion Channels and Cancer - Canceropole Grand Ouest”, (IC-CGO); France
| | - Jean-Pierre Haelters
- Université de Brest; CEMCA, CNRS UMR 6521, IBSAM; 6 Avenue Le Gorgeu 29238 Brest France
- Network “Ion Channels and Cancer - Canceropole Grand Ouest”, (IC-CGO); France
| | - Hélène Couthon-Gourvès
- Université de Brest; CEMCA, CNRS UMR 6521, IBSAM; 6 Avenue Le Gorgeu 29238 Brest France
- Network “Ion Channels and Cancer - Canceropole Grand Ouest”, (IC-CGO); France
| | - Christophe Vandier
- INSERM, UMR 1069; Université François Rabelais; Tours 37032 France
- Network “Ion Channels and Cancer - Canceropole Grand Ouest”, (IC-CGO); France
| | - Paul-Alain Jaffrès
- Université de Brest; CEMCA, CNRS UMR 6521, IBSAM; 6 Avenue Le Gorgeu 29238 Brest France
- Network “Ion Channels and Cancer - Canceropole Grand Ouest”, (IC-CGO); France
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Martial S. Involvement of ion channels and transporters in carcinoma angiogenesis and metastasis. Am J Physiol Cell Physiol 2016; 310:C710-27. [PMID: 26791487 DOI: 10.1152/ajpcell.00218.2015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Angiogenesis is a finely tuned process, which is the result of the equilibrium between pro- and antiangiogenic factors. In solid tumor angiogenesis, the balance is highly in favor of the production of new, but poorly functional blood vessels, initially intended to provide growing tumors with nutrients and oxygen. Among the numerous proteins involved in tumor development, several types of ion channels are overexpressed in tumor cells, as well as in stromal and endothelial cells. Ion channels thus actively participate in the different hallmarks of cancer, especially in tumor angiogenesis and metastasis. Indeed, from their strategic localization in the plasma membrane, ion channels are key operators of cell signaling, as they sense and respond to environmental changes. This review aims to decipher how ion channels of different families are intricately involved in the fundamental angiogenesis and metastasis hallmarks, which lead from a nascent tumor to systemic dissemination. An overview of the possible use of ion channels as therapeutic targets will also be given, showing that ion channel inhibitors or specific antibodies may provide effective tools, in the near future, in the treatment of carcinomas.
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Affiliation(s)
- Sonia Martial
- Institut de Recherche sur le Cancer et le Vieillissement, CNRS UMR 7284, Inserm U1081, Université Nice-Sophia Antipolis, Nice, France
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The small conductance calcium-activated potassium channel 3 (SK3) is a molecular target for Edelfosine to reduce the invasive potential of urothelial carcinoma cells. Tumour Biol 2015; 37:6275-83. [PMID: 26619845 DOI: 10.1007/s13277-015-4509-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 11/25/2015] [Indexed: 02/05/2023] Open
Abstract
Metastasis is the survival-determining factor in urothelial carcinoma (UC) of the urinary bladder. The small conductance calcium-activated potassium channel 3 (SK3) enhances tumor cell invasion in breast cancer and malignant melanoma. Since Edelfosine, a glycerophospholipid with antitumoral properties, effectively inhibits SK3 channel activity, our goal was to evaluate SK3 as a potential molecular target to inhibit the gain of an invasive phenotype in UC. SK3 protein expression was analyzed in 208 tissue samples and UC cell lines. Effects of Edelfosine on SK3 expression and intracellular calcium levels as well as on cell morphology, cell survival and proliferation were assessed using immunoblotting, potentiometric fluorescence microscopy, and clonogenic/cell survival assay; furthermore, we analyzed the effect of Edelfosine and SK3 RNAi knockdown on tumor cell migration and invasion in vitro and in vivo. We found that SK3 is strongly expressed in muscle-invasive UC and in the RT112 cellular tumor model. Higher concentrations of Edelfosine have a strong antitumoral effect on UC cells, while 1 μM effectively inhibits migration/invasion of UC cells in vitro and in vivo comparable to the SK3 knockdown phenotype. Taken together, our results show strong expression of SK3 in muscle-invasive UC, consistent with the postulated role of the protein in tumor cell invasion. Edelfosine is able to effectively inhibit migration and invasion of UC cells in vitro and in vivo in an SK3-dependent way, pointing towards a possible role for Edelfosine as an antiinvasive drug to effectively inhibit UC cell invasion and metastasis.
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Mathieu V, Chantôme A, Lefranc F, Cimmino A, Miklos W, Paulitschke V, Mohr T, Maddau L, Kornienko A, Berger W, Vandier C, Evidente A, Delpire E, Kiss R. Sphaeropsidin A shows promising activity against drug-resistant cancer cells by targeting regulatory volume increase. Cell Mol Life Sci 2015; 72:3731-46. [PMID: 25868554 DOI: 10.1007/s00018-015-1902-6] [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: 08/19/2014] [Revised: 03/10/2015] [Accepted: 04/02/2015] [Indexed: 12/19/2022]
Abstract
Despite the recent advances in the treatment of tumors with intrinsic chemotherapy resistance, such as melanoma and renal cancers, their prognosis remains poor and new chemical agents with promising activity against these cancers are urgently needed. Sphaeropsidin A, a fungal metabolite whose anticancer potential had previously received little attention, was isolated from Diplodia cupressi and found to display specific anticancer activity in vitro against melanoma and kidney cancer subpanels in the National Cancer Institute (NCI) 60-cell line screen. The NCI data revealed a mean LC50 of ca. 10 µM and a cellular sensitivity profile that did not match that of any other agent in the 765,000 compound database. Subsequent mechanistic studies in melanoma and other multidrug-resistant in vitro cancer models showed that sphaeropsidin A can overcome apoptosis as well as multidrug resistance by inducing a marked and rapid cellular shrinkage related to the loss of intracellular Cl(-) and the decreased HCO3 (-) concentration in the culture supernatant. These changes in ion homeostasis and the absence of effects on the plasma membrane potential were attributed to the sphaeropsidin A-induced impairment of regulatory volume increase (RVI). Preliminary results also indicate that depending on the type of cancer, the sphaeropsidin A effects on RVI could be related to Na-K-2Cl electroneutral cotransporter or Cl(-)/HCO3 (-) anion exchanger(s) targeting. This study underscores the modulation of ion-transporter activity as a promising therapeutic strategy to combat drug-resistant cancers and identifies the fungal metabolite, sphaeropsidin A, as a lead to develop anticancer agents targeting RVI in cancer cells.
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Affiliation(s)
- Véronique Mathieu
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), Campus de la Plaine, Boulevard du Triomphe, 1050, Brussels, Belgium.
| | - Aurélie Chantôme
- Inserm UMR 1069, Université François Rabelais and network "Ion channels and cancer - Canceropole Grand Ouest", Tours, France
| | - Florence Lefranc
- Service de Neurochirurgie, Hôpital Erasme, Université Libre de Bruxelles, Brussels, Belgium
| | - Alessio Cimmino
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126, Naples, Italy
| | - Walter Miklos
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Verena Paulitschke
- Department of Dermatology, Medical University of Vienna, Vienna, Austria
| | - Thomas Mohr
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Lucia Maddau
- Dipartimento di Agraria, Sezione di Patologia vegetale ed Entomologia, Università degli Studi di Sassari, Viale Italia 39, 07100, Sassari, Italy
| | - Alexander Kornienko
- Department of Chemistry and Biochemistry, Texas State University, San Marcos, TX, 78666, USA
| | - Walter Berger
- Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Christophe Vandier
- Inserm UMR 1069, Université François Rabelais and network "Ion channels and cancer - Canceropole Grand Ouest", Tours, France
| | - Antonio Evidente
- Dipartimento di Scienze Chimiche, Università di Napoli Federico II, Complesso Universitario Monte Sant'Angelo, Via Cintia 4, 80126, Naples, Italy
| | - Eric Delpire
- Department of Anesthesiology, Vanderbilt University Medical School, Nashville, TN, USA
| | - Robert Kiss
- Laboratoire de Cancérologie et de Toxicologie Expérimentale, Faculté de Pharmacie, Université Libre de Bruxelles (ULB), Campus de la Plaine, Boulevard du Triomphe, 1050, Brussels, Belgium
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Ohya S, Nakamura E, Horiba S, Kito H, Matsui M, Yamamura H, Imaizumi Y. Role of the K(Ca)3.1 K+ channel in auricular lymph node CD4+ T-lymphocyte function of the delayed-type hypersensitivity model. Br J Pharmacol 2015; 169:1011-23. [PMID: 23594188 DOI: 10.1111/bph.12215] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 02/18/2013] [Accepted: 03/01/2013] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND AND PURPOSE The intermediate-conductance Ca(2+)-activated K(+) channel (K(Ca)3.1) modulates the Ca(2+) response through the control of the membrane potential in the immune system. We investigated the role of K(Ca)3.1 on the pathogenesis of delayed-type hypersensitivity (DTH) in auricular lymph node (ALN) CD4(+) T-lymphocytes of oxazolone (Ox)-induced DTH model mice. EXPERIMENTAL APPROACH The expression patterns of K(Ca)3.1 and its possible transcriptional regulators were compared among ALN T-lymphocytes of three groups [non-sensitized (Ox-/-), Ox-sensitized, but non-challenged (Ox+/-) and Ox-sensitized and -challenged (Ox+/+)] using real-time polymerase chain reaction, Western blotting and flow cytometry. KCa 3.1 activity was measured by whole-cell patch clamp and the voltage-sensitive dye imaging. The effects of K(Ca)3.1 blockade were examined by the administration of selective K(Ca)3.1 blockers. KEY RESULTS Significant up-regulation of K(Ca)3.1a was observed in CD4(+) T-lymphocytes of Ox+/- and Ox+/+, without any evident changes in the expression of the dominant-negative form, K(Ca)3.1b. Negatively correlated with this, the repressor element-1 silencing transcription factor (REST) was significantly down-regulated. Pharmacological blockade of K(Ca)3.1 resulted in an accumulation of the CD4(+) T-lymphocytes of Ox+/+ at the G0/G1 phase of the cell cycle, and also significantly recovered not only the pathogenesis of DTH, but also the changes in the K(Ca)3.1 expression and activity in the CD4(+) T-lymphocytes of Ox+/- and Ox+/+. CONCLUSIONS AND IMPLICATIONS The up-regulation of K(Ca)3.1a in conjunction with the down-regulation of REST may be involved in CD4(+) T-lymphocyte proliferation in the ALNs of DTH model mice; and K(Ca)3.1 may be an important target for therapeutic intervention in allergy diseases such as DTH.
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Affiliation(s)
- Susumu Ohya
- Department of Molecular & Cellular Pharmacology, Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, Japan
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Guéguinou M, Gambade A, Félix R, Chantôme A, Fourbon Y, Bougnoux P, Weber G, Potier-Cartereau M, Vandier C. Lipid rafts, KCa/ClCa/Ca2+ channel complexes and EGFR signaling: Novel targets to reduce tumor development by lipids? BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1848:2603-20. [PMID: 25450343 DOI: 10.1016/j.bbamem.2014.10.036] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Revised: 10/15/2014] [Accepted: 10/22/2014] [Indexed: 12/29/2022]
Abstract
Membrane lipid rafts are distinct plasma membrane nanodomains that are enriched with cholesterol, sphingolipids and gangliosides, with occasional presence of saturated fatty acids and phospholipids containing saturated acyl chains. It is well known that they organize receptors (such as Epithelial Growth Factor Receptor), ion channels and their downstream acting molecules to regulate intracellular signaling pathways. Among them are Ca2+ signaling pathways, which are modified in tumor cells and inhibited upon membrane raft disruption. In addition to protein components, lipids from rafts also contribute to the organization and function of Ca2+ signaling microdomains. This article aims to focus on the lipid raft KCa/ClCa/Ca2+ channel complexes that regulate Ca2+ and EGFR signaling in cancer cells, and discusses the potential modification of these complexes by lipids as a novel therapeutic approach in tumor development. This article is part of a Special Issue entitled: Membrane channels and transporters in cancers.
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Affiliation(s)
- Maxime Guéguinou
- Inserm, UMR1069, Nutrition, Croissance et Cancer, Tours F-37032, France; Université François Rabelais, Tours F-37032, France
| | - Audrey Gambade
- Inserm, UMR1069, Nutrition, Croissance et Cancer, Tours F-37032, France; Université François Rabelais, Tours F-37032, France
| | - Romain Félix
- Inserm, UMR1069, Nutrition, Croissance et Cancer, Tours F-37032, France; Université François Rabelais, Tours F-37032, France
| | - Aurélie Chantôme
- Inserm, UMR1069, Nutrition, Croissance et Cancer, Tours F-37032, France; Université François Rabelais, Tours F-37032, France
| | - Yann Fourbon
- Inserm, UMR1069, Nutrition, Croissance et Cancer, Tours F-37032, France; Université François Rabelais, Tours F-37032, France
| | - Philippe Bougnoux
- Inserm, UMR1069, Nutrition, Croissance et Cancer, Tours F-37032, France; Université François Rabelais, Tours F-37032, France; Centre HS Kaplan, CHRU Tours, Tours F-37032, France
| | - Günther Weber
- Inserm, UMR1069, Nutrition, Croissance et Cancer, Tours F-37032, France; Université François Rabelais, Tours F-37032, France
| | - Marie Potier-Cartereau
- Inserm, UMR1069, Nutrition, Croissance et Cancer, Tours F-37032, France; Université François Rabelais, Tours F-37032, France
| | - Christophe Vandier
- Inserm, UMR1069, Nutrition, Croissance et Cancer, Tours F-37032, France; Université François Rabelais, Tours F-37032, France.
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Sun C, Zhang S, Li J. Calreticulin gene mutations in myeloproliferative neoplasms without Janus kinase 2 mutations. Leuk Lymphoma 2014; 56:1593-8. [PMID: 25115511 DOI: 10.3109/10428194.2014.953153] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Calreticulin, an endoplasmic reticulum protein with multiple functions involving chaperone activity and calcium homeostasis, plays an important role in cellular proliferation and differentiation. Calreticulin dysfunction is known to be associated with different cancers. Very recently, calreticulin mutations have been identified in myeloproliferative neoplasms (MPNs), with a particularly high frequency in MPNs without Janus kinase 2 (JAK2) mutations, which exhibit clinical characteristics different from those with mutant JAK2. Here, we focus on the structure, function and carcinogenicity of calreticulin, as well as its relationship with MPNs not involving JAK2 mutations.
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Affiliation(s)
- Chao Sun
- Department of Hematology, Wuxi People's Hospital, Affiliated of Nanjing Medical University , Wuxi, Jiangsu , China
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Siddiqui T, Lively S, Ferreira R, Wong R, Schlichter LC. Expression and contributions of TRPM7 and KCa2.3/SK3 channels to the increased migration and invasion of microglia in anti-inflammatory activation states. PLoS One 2014; 9:e106087. [PMID: 25148577 PMCID: PMC4141841 DOI: 10.1371/journal.pone.0106087] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Accepted: 07/31/2014] [Indexed: 01/17/2023] Open
Abstract
Microglia rapidly respond to CNS injury and disease and can assume a spectrum of activation states. While changes in gene expression and production of inflammatory mediators have been extensively described after classical (LPS-induced) and alternative (IL4-induced) microglial activation, less is known about acquired de-activation in response to IL10. It is important to understand how microglial activation states affect their migration and invasion; crucial functions after injury and in the developing CNS. We reported that LPS-treated rat microglia migrate very poorly, while IL4-treated cells migrate and invade much better. Having discovered that the lamellum of migrating microglia contains a large ring of podosomes – microscopic structures that are thought to mediate adhesion, migration and invasion – we hypothesized that IL4 and IL10 would differentially affect podosome expression, gene induction, migration and invasion. Further, based on the enrichment of the KCa2.3/SK3 Ca2+-activated potassium channel in microglial podosomes, we predicted that it regulates migration and invasion. We found both similarities and differences in gene induction by IL4 and IL10 and, while both cytokines increased migration and invasion, only IL10 affected podosome expression. KCa2.3 currents were recorded in microglia under all three activation conditions and KCNN3 (KCa2.3) expression was similar. Surprisingly then, of three KCa2.3 inhibitors (apamin, tamapin, NS8593), only NS8593 abrogated the increased migration and invasion of IL4 and IL10-treated microglia (and invasion of unstimulated microglia). This discrepancy was explained by the observed block of TRPM7 currents in microglia by NS8593, which occurred under all three activation conditions. A similar inhibition of both migration and invasion was seen with a TRPM7 inhibitor (AA-861) that does not block KCa2.3 channels. Thus, we conclude that TRPM7 (not KCa2.3) contributes to the enhanced ability of microglia to migrate and invade when in anti-inflammatory states. This will be an important consideration in developing TRPM7 inhibitors for treating CNS injury.
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Affiliation(s)
- Tamjeed Siddiqui
- Toronto Western Research Institute, Genes and Development Division, University Health Network, Toronto, Ontario, Canada
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Starlee Lively
- Toronto Western Research Institute, Genes and Development Division, University Health Network, Toronto, Ontario, Canada
| | - Roger Ferreira
- Toronto Western Research Institute, Genes and Development Division, University Health Network, Toronto, Ontario, Canada
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Raymond Wong
- Toronto Western Research Institute, Genes and Development Division, University Health Network, Toronto, Ontario, Canada
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Lyanne C. Schlichter
- Toronto Western Research Institute, Genes and Development Division, University Health Network, Toronto, Ontario, Canada
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
- * E-mail:
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Song HP, Li RL, Chen X, Wang YY, Cai JZ, Liu J, Chen WW. Atractylodes macrocephala Koidz promotes intestinal epithelial restitution via the polyamine--voltage-gated K+ channel pathway. JOURNAL OF ETHNOPHARMACOLOGY 2014; 152:163-172. [PMID: 24417867 DOI: 10.1016/j.jep.2013.12.049] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 10/30/2013] [Accepted: 12/30/2013] [Indexed: 06/03/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Atractylodes macrocephala Koidz (AMK) has been used widely as a digestive and tonic in traditional Chinese medicine. AMK has shown noteworthy promoting effect on intestinal epithelial cell migration, which might represent a promising candidate for the treatment of intestinal mucosa injury. The aim of this study was to investigate the efficacy of AMK on intestinal mucosal restitution and the underlying mechanisms via IEC-6 cell migration model. MATERIALS AND METHODS A wounding model of IEC-6 cells was induced by a single-edge razor blade along the diameter of six-well polystyrene plates. The cells were grown in control cultures and in cultures containing spermidine (5 μmol/L, SPD, reference drug), alpha-difluoromethylornithine (2.5 mmol/L, DFMO, polyamine inhibitor), AMK (50, 100, and 200 μg/mL), DFMO plus SPD and DFMO plus AMK for 24h. The membrane potential (MP) and cytosolic free Ca(2+) concentration ([Ca(2+)]cyt) were detected by flow cytometry, and polyamines content was determined via high-performance liquid chromatography (HPLC). The expression of Kv1.1 mRNA and protein levels were assessed by RT-qPCR and Western blot analysis, respectively. Cell migration assay was carried out using the Image-Pro Plus software. All of these indexes were used to evaluate the effectiveness of AMK. RESULTS (1) Treatment with AMK caused significant increases in cellular polyamines content, membrane hyperpolarization, an elevation of [Ca(2+)]cyt and an acceleration of cell migration in IEC-6 cells, as compared to control group. (2) AMK not only reversed the inhibitory effects of DFMO on the polyamines content, MP, and [Ca(2+)]cyt but also restored IEC-6 cell migration to control levels. (3) The Kv1.1 mRNA and protein expression were significantly increased by AMK treatment in control and polyamine-deficient IEC-6 cells. CONCLUSIONS The results of our current studies revealed that treatment with AMK significantly stimulates the migration of intestinal epithelial cells through polyamine-Kv1.1 channel signaling pathway, which could promote the healing of intestinal injury. These results suggest the potential usefulness of AMK to cure intestinal disorders characterized by injury and ineffective repair of the intestinal mucosa.
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Affiliation(s)
- Hou-Pan Song
- Spleen and Stomach Institute, Guangzhou University of Chinese Medicine, 12 Airport Road, Baiyun District, Guangzhou 510405, PR China
| | - Ru-Liu Li
- Spleen and Stomach Institute, Guangzhou University of Chinese Medicine, 12 Airport Road, Baiyun District, Guangzhou 510405, PR China.
| | - Xu Chen
- Spleen and Stomach Institute, Guangzhou University of Chinese Medicine, 12 Airport Road, Baiyun District, Guangzhou 510405, PR China
| | - Yi-Yu Wang
- Spleen and Stomach Institute, Guangzhou University of Chinese Medicine, 12 Airport Road, Baiyun District, Guangzhou 510405, PR China
| | - Jia-Zhong Cai
- Spleen and Stomach Institute, Guangzhou University of Chinese Medicine, 12 Airport Road, Baiyun District, Guangzhou 510405, PR China
| | - Jia Liu
- Spleen and Stomach Institute, Guangzhou University of Chinese Medicine, 12 Airport Road, Baiyun District, Guangzhou 510405, PR China
| | - Wei-Wen Chen
- Spleen and Stomach Institute, Guangzhou University of Chinese Medicine, 12 Airport Road, Baiyun District, Guangzhou 510405, PR China; Research Center of Medicinal Plant Resource Science and Engineering, Guangzhou University of Chinese Medicine, 232 WaiHuan East Road, Guangzhou University Town, Guangzhou 510006, PR China
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40
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Abstract
Potassium channels are transmembrane proteins that selectively facilitate the flow of potassium ions down an electrochemical gradient. These molecules have been studied in great detail in the context of cell excitability, but their roles in less cell type-specific functions, such as cell proliferation, angiogenesis or cell migration, have only recently been assessed. Moreover, the importance of these channels for tumour biology has become evident. This, coupled with the fact that they are accessible proteins and that their pharmacology is well characterized, has increased the interest in investigating potassium channels as therapeutic targets in cancer patients.
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Affiliation(s)
- Luis A Pardo
- Oncophysiology Group, Max-Planck-Institute of Experimental Medicine, Hermann-Rein-Strasse 3, 37075 Göttingen, Germany
| | - Walter Stühmer
- Department of Molecular Biology of Neuronal Signals, Max-Planck-Institute of Experimental Medicine, Hermann-Rein-Strasse 3, 37075 Göttingen, Germany
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Stock C, Ludwig FT, Hanley PJ, Schwab A. Roles of ion transport in control of cell motility. Compr Physiol 2013; 3:59-119. [PMID: 23720281 DOI: 10.1002/cphy.c110056] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cell motility is an essential feature of life. It is essential for reproduction, propagation, embryonic development, and healing processes such as wound closure and a successful immune defense. If out of control, cell motility can become life-threatening as, for example, in metastasis or autoimmune diseases. Regardless of whether ciliary/flagellar or amoeboid movement, controlled motility always requires a concerted action of ion channels and transporters, cytoskeletal elements, and signaling cascades. Ion transport across the plasma membrane contributes to cell motility by affecting the membrane potential and voltage-sensitive ion channels, by inducing local volume changes with the help of aquaporins and by modulating cytosolic Ca(2+) and H(+) concentrations. Voltage-sensitive ion channels serve as voltage detectors in electric fields thus enabling galvanotaxis; local swelling facilitates the outgrowth of protrusions at the leading edge while local shrinkage accompanies the retraction of the cell rear; the cytosolic Ca(2+) concentration exerts its main effect on cytoskeletal dynamics via motor proteins such as myosin or dynein; and both, the intracellular and the extracellular H(+) concentration modulate cell migration and adhesion by tuning the activity of enzymes and signaling molecules in the cytosol as well as the activation state of adhesion molecules at the cell surface. In addition to the actual process of ion transport, both, channels and transporters contribute to cell migration by being part of focal adhesion complexes and/or physically interacting with components of the cytoskeleton. The present article provides an overview of how the numerous ion-transport mechanisms contribute to the various modes of cell motility.
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Affiliation(s)
- Christian Stock
- Institute of Physiology II, University of Münster, Münster, Germany.
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42
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Girault A, Brochiero E. Evidence of K+ channel function in epithelial cell migration, proliferation, and repair. Am J Physiol Cell Physiol 2013; 306:C307-19. [PMID: 24196531 DOI: 10.1152/ajpcell.00226.2013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Efficient repair of epithelial tissue, which is frequently exposed to insults, is necessary to maintain its functional integrity. It is therefore necessary to better understand the biological and molecular determinants of tissue regeneration and to develop new strategies to promote epithelial repair. Interestingly, a growing body of evidence indicates that many members of the large and widely expressed family of K(+) channels are involved in regulation of cell migration and proliferation, key processes of epithelial repair. First, we briefly summarize the complex mechanisms, including cell migration, proliferation, and differentiation, engaged after epithelial injury. We then present evidence implicating K(+) channels in the regulation of these key repair processes. We also describe the mechanisms whereby K(+) channels may control epithelial repair processes. In particular, changes in membrane potential, K(+) concentration, cell volume, intracellular Ca(2+), and signaling pathways following modulation of K(+) channel activity, as well as physical interaction of K(+) channels with the cytoskeleton or integrins are presented. Finally, we discuss the challenges to efficient, specific, and safe targeting of K(+) channels for therapeutic applications to improve epithelial repair in vivo.
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Affiliation(s)
- Alban Girault
- Centre de Recherche du Centre Hospitalier de l'Université de Montréal (CRCHUM), Montreal, Quebec, Canada; and
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Williams S, Bateman A, O'Kelly I. Altered expression of two-pore domain potassium (K2P) channels in cancer. PLoS One 2013; 8:e74589. [PMID: 24116006 PMCID: PMC3792113 DOI: 10.1371/journal.pone.0074589] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Accepted: 08/03/2013] [Indexed: 01/31/2023] Open
Abstract
Potassium channels have become a focus in cancer biology as they play roles in cell behaviours associated with cancer progression, including proliferation, migration and apoptosis. Two-pore domain (K2P) potassium channels are background channels which enable the leak of potassium ions from cells. As these channels are open at rest they have a profound effect on cellular membrane potential and subsequently the electrical activity and behaviour of cells in which they are expressed. The K2P family of channels has 15 mammalian members and already 4 members of this family (K2P2.1, K2P3.1, K2P9.1, K2P5.1) have been implicated in cancer. Here we examine the expression of all 15 members of the K2P family of channels in a range of cancer types. This was achieved using the online cancer microarray database, Oncomine (www.oncomine.org). Each gene was examined across 20 cancer types, comparing mRNA expression in cancer to normal tissue. This analysis revealed all but 3 K2P family members (K2P4.1, K2P16.1, K2P18.1) show altered expression in cancer. Overexpression of K2P channels was observed in a range of cancers including breast, leukaemia and lung while more cancers (brain, colorectal, gastrointestinal, kidney, lung, melanoma, oesophageal) showed underexpression of one or more channels. K2P1.1, K2P3.1, K2P12.1, were overexpressed in a range of cancers. While K2P1.1, K2P3.1, K2P5.1, K2P6.1, K2P7.1 and K2P10.1 showed significant underexpression across the cancer types examined. This analysis supports the view that specific K2P channels may play a role in cancer biology. Their altered expression together with their ability to impact the function of other ion channels and their sensitivity to environmental stimuli (pO2, pH, glucose, stretch) makes understanding the role these channels play in cancer of key importance.
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Affiliation(s)
- Sarah Williams
- Human Development and Health, Centre for Human Development, Stem Cells and Regeneration, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Andrew Bateman
- Cancer Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Ita O'Kelly
- Human Development and Health, Centre for Human Development, Stem Cells and Regeneration, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
- * E-mail: I.M.O'
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Yang M, Brackenbury WJ. Membrane potential and cancer progression. Front Physiol 2013; 4:185. [PMID: 23882223 PMCID: PMC3713347 DOI: 10.3389/fphys.2013.00185] [Citation(s) in RCA: 362] [Impact Index Per Article: 32.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 06/28/2013] [Indexed: 12/27/2022] Open
Abstract
Membrane potential (Vm), the voltage across the plasma membrane, arises because of the presence of different ion channels/transporters with specific ion selectivity and permeability. Vm is a key biophysical signal in non-excitable cells, modulating important cellular activities, such as proliferation and differentiation. Therefore, the multiplicities of various ion channels/transporters expressed on different cells are finely tuned in order to regulate the Vm. It is well-established that cancer cells possess distinct bioelectrical properties. Notably, electrophysiological analyses in many cancer cell types have revealed a depolarized Vm that favors cell proliferation. Ion channels/transporters control cell volume and migration, and emerging data also suggest that the level of Vm has functional roles in cancer cell migration. In addition, hyperpolarization is necessary for stem cell differentiation. For example, both osteogenesis and adipogenesis are hindered in human mesenchymal stem cells (hMSCs) under depolarizing conditions. Therefore, in the context of cancer, membrane depolarization might be important for the emergence and maintenance of cancer stem cells (CSCs), giving rise to sustained tumor growth. This review aims to provide a broad understanding of the Vm as a bioelectrical signal in cancer cells by examining several key types of ion channels that contribute to its regulation. The mechanisms by which Vm regulates cancer cell proliferation, migration, and differentiation will be discussed. In the long term, Vm might be a valuable clinical marker for tumor detection with prognostic value, and could even be artificially modified in order to inhibit tumor growth and metastasis.
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Affiliation(s)
- Ming Yang
- Department of Biology, University of York York, UK
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45
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Crottès D, Guizouarn H, Martin P, Borgese F, Soriani O. The sigma-1 receptor: a regulator of cancer cell electrical plasticity? Front Physiol 2013; 4:175. [PMID: 23882221 PMCID: PMC3712323 DOI: 10.3389/fphys.2013.00175] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Accepted: 06/21/2013] [Indexed: 12/18/2022] Open
Abstract
Originally mistaken as an opioid receptor, the sigma-1 receptor (Sig1R) is a ubiquitous membrane protein that has been involved in many cellular processes. While the precise function of Sig1R has long remained mysterious, recent studies have shed light on its role and the molecular mechanisms triggered. Sig1R is in fact a stress-activated chaperone mainly associated with the ER-mitochondria interface that can regulate cell survival through the control of calcium homeostasis. Sig1R functionally regulates ion channels belonging to various molecular families and it has thus been involved in neuronal plasticity and central nervous system diseases. Interestingly, Sig1R is frequently expressed in tumors but its function in cancer has not been yet clarified. In this review, we discuss the current understanding of Sig1R. We suggest herein that Sig1R shapes cancer cell electrical signature upon environmental conditions. Thus, Sig1R may be used as a novel therapeutic target to specifically abrogate pro-invasive functions of ion channels in cancer tissue.
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Affiliation(s)
- David Crottès
- Université de Nice, UMR 7277 Nice, France ; Institut de Biologie de Valrose, CNRS UMR 7277, INSERM U1091, Université de Nice Nice, France
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46
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Chantôme A, Potier-Cartereau M, Clarysse L, Fromont G, Marionneau-Lambot S, Guéguinou M, Pagès JC, Collin C, Oullier T, Girault A, Arbion F, Haelters JP, Jaffrès PA, Pinault M, Besson P, Joulin V, Bougnoux P, Vandier C. Pivotal Role of the Lipid Raft SK3–Orai1 Complex in Human Cancer Cell Migration and Bone Metastases. Cancer Res 2013; 73:4852-61. [DOI: 10.1158/0008-5472.can-12-4572] [Citation(s) in RCA: 141] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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47
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Yang D, Arifhodzic L, Ganellin CR, Jenkinson DH. Further studies on bis-charged tetraazacyclophanes as potent inhibitors of small conductance Ca(2+)-activated K+ channels. Eur J Med Chem 2013; 63:907-23. [PMID: 23685886 DOI: 10.1016/j.ejmech.2013.02.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2013] [Revised: 02/21/2013] [Accepted: 02/22/2013] [Indexed: 11/20/2022]
Abstract
Previously, quinolinium-based tetraazacyclophanes, such as UCL 1684 and UCL 1848, have been shown to be extraordinarily sensitive to changes in chemical structure (especially to the size of the cyclophane system) with respect to activity as potent non-peptidic blockers of the small conductance Ca(2+)-activated K(+) ion channels (SKCa). The present work has sought to optimize the structure of the linking chains in UCL 1848. We report the synthesis and SKCa channel-blocking activity of 29 analogues of UCL 1848 in which the central CH2 of UCL 1848 is replaced by other groups X or Y = O, S, CF2, CO, CHOH, CC, CHCH, CHMe to explore whether subtle changes in bond length or flexibility can improve potency still further. The possibility of improving potency by introducing ring substituents has also been explored by synthesizing and testing 25 analogues of UCL 1684 and UCL 1848 with substituents (NO2, NH2, CF3, F, Cl, CH3, OCH3, OCF3, OH) in the 5, 6 or 7 positions of the aminoquinolinium rings. As in our earlier work, each compound was assayed for inhibition of the afterhyperpolarization (AHP) in rat sympathetic neurons, an action mediated by the SK3 subtype of the SKCa channel. One of the new compounds (39, R(7) = Cl, UCL 2053) is twice as potent as UCL 1848 and UCL 1684: seven are comparable in activity.
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Affiliation(s)
- Donglai Yang
- Department of Chemistry, University College London, Gower Street, London WC1E 6BT, UK
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48
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Zamanian M, Veerakumarasivam A, Abdullah S, Rosli R. Calreticulin and cancer. Pathol Oncol Res 2013; 19:149-54. [PMID: 23392843 DOI: 10.1007/s12253-012-9600-2] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2011] [Accepted: 12/21/2012] [Indexed: 01/05/2023]
Abstract
Calreticulin (CRT) as a multi-functional endoplasmic reticulum protein is involved in a spectrum of cellular processes which ranges from calcium homeostasis and chaperoning to cell adhesion and finally malignant formation and progression. Previous studies have shown a contributing role for CRT in a range of different cancers. This present review will focus on the possible roles of CRT in the progression of malignant proliferation and the mechanisms involved in its contribution to cancer invasion.
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Affiliation(s)
- Mohammadreza Zamanian
- Genetic Medicine Research Center, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor Darul Ehsan, Malaysia
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Schwab A, Fabian A, Hanley PJ, Stock C. Role of ion channels and transporters in cell migration. Physiol Rev 2013; 92:1865-913. [PMID: 23073633 DOI: 10.1152/physrev.00018.2011] [Citation(s) in RCA: 315] [Impact Index Per Article: 28.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Cell motility is central to tissue homeostasis in health and disease, and there is hardly any cell in the body that is not motile at a given point in its life cycle. Important physiological processes intimately related to the ability of the respective cells to migrate include embryogenesis, immune defense, angiogenesis, and wound healing. On the other side, migration is associated with life-threatening pathologies such as tumor metastases and atherosclerosis. Research from the last ≈ 15 years revealed that ion channels and transporters are indispensable components of the cellular migration apparatus. After presenting general principles by which transport proteins affect cell migration, we will discuss systematically the role of channels and transporters involved in cell migration.
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50
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Sevrain CM, Haelters JP, Chantôme A, Couthon-Gourvès H, Gueguinou M, Potier-Cartereau M, Vandier C, Jaffrès PA. DiGalactosyl-Glycero-Ether Lipid: synthetic approaches and evaluation as SK3 channel inhibitor. Org Biomol Chem 2013; 11:4479-87. [DOI: 10.1039/c3ob40634b] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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