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Matthews RM, Bradley E, Hollywood MA, Lundy FT, McGarvey LP, Sergeant GP, Thornbury KD. Modulation of fast sodium current in airway smooth muscle cells by exchange protein directly activated by cAMP. Am J Physiol Cell Physiol 2024; 326:C1-C9. [PMID: 37955124 DOI: 10.1152/ajpcell.00417.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/19/2023] [Accepted: 11/01/2023] [Indexed: 11/14/2023]
Abstract
Airway smooth muscle (ASM) cells from mouse bronchus express a fast sodium current mediated by NaV1.7. We present evidence that this current is regulated by cAMP. ASM cells were isolated by enzymatic dispersal and studied using the whole cell patch clamp technique at room temperature. A fast sodium current, INa, was observed on holding cells under voltage clamp at -100 mV and stepping to -20 mV. This current was reduced in a concentration-dependent manner by denopamine (10 and 30 µM), a β-adrenergic agonist. Forskolin (1 µM), an activator of adenylate cyclase, reduced the current by 35%, but 6-MB-cAMP (300 µM), an activator of protein kinase A (PKA), had no effect. In contrast, 8-pCPT-2-O-Me-cAMP-AM (007-AM, 10 µM), an activator of exchange protein directly activated by cAMP (Epac), reduced the current by 48%. The inhibitory effect of 007-AM was still observed in the presence of dantrolene (10 µM), an inhibitor of ryanodine receptors, and when cytosolic [Ca2+] was buffered by inclusion of 1,2-bis(o-aminophenoxy)ethane-N,N,N',N'-tetraacetic acid, Sigma (BAPTA) (50 µM) in the pipette solution, suggesting that the inhibition of INa was not due to Ca2+-release from intracellular stores. When 007-AM was tested on the current-voltage relationship, it reduced the current at potentials from -30 to 0 mV, but had no effect on the steady-state activation curve. However, the steady-state inactivation V1/2, the voltage causing inactivation of 50% of the current, was shifted in the negative direction from -76.6 mV to -89.7 mV. These findings suggest that cAMP regulates INa in mouse ASM via Epac, but not PKA.NEW & NOTEWORTHY β-adrenergic agonists are commonly used in inhalers to treat asthma and chronic obstructive pulmonary disease. These work by causing bronchodilation and reducing inflammation. The present study provides evidence that these drugs have an additional action, namely, to reduce sodium influx into airway smooth muscle cells via fast voltage-dependent channels. This may have the dual effect of promoting bronchodilation and reducing remodeling of the airways, which has a detrimental effect in these diseases.
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Affiliation(s)
- Ruth M Matthews
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dundalk, Ireland
| | - Eamonn Bradley
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dundalk, Ireland
| | - Mark A Hollywood
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dundalk, Ireland
| | - Fionnuala T Lundy
- School of Medicine, Dentistry and Biomedical Sciences, Wellcome Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom
| | - Lorcan P McGarvey
- School of Medicine, Dentistry and Biomedical Sciences, Wellcome Wolfson Institute for Experimental Medicine, Queen's University Belfast, Belfast, United Kingdom
| | - Gerard P Sergeant
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dundalk, Ireland
| | - Keith D Thornbury
- Smooth Muscle Research Centre, Dundalk Institute of Technology, Dundalk, Ireland
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2
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Bian Y, Tuo J, He L, Li W, Li S, Chu H, Zhao Y. Voltage-gated sodium channels in cancer and their specific inhibitors. Pathol Res Pract 2023; 251:154909. [PMID: 37939447 DOI: 10.1016/j.prp.2023.154909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 11/10/2023]
Abstract
Voltage-gated sodium channels (VGSCs) participate in generating and spreading action potentials in electrically excited cells such as neurons and muscle fibers. Abnormal expression of VGSCs has been observed in various types of tumors, while they are either not expressed or expressed at a low level in the matching normal tissue. Hence, this abnormal expression suggests that VGSCs confer some advantage or viability on tumor cells, making them a valuable indicator for identifying tumor cells. In addition, overexpression of VGSCs increased the ability of cancer cells to metastasize and invade, as well as correlated with the metastatic behavior of different cancers. Therefore, blocking VGSCs presents a new strategy for the treatment of cancers. A portion of this review summarizes the structure and function of VGSCs and also describes the correlation between VGSCs and cancers. Most importantly, we provide an overview of current research on various subtype-selective VGSC inhibitors and updates on ongoing clinical studies.
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Affiliation(s)
- Yuan Bian
- School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Jiale Tuo
- School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Liangpeng He
- School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Wenwen Li
- School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China
| | - Shangxiao Li
- School of Medical Devices, Shenyang Pharmaceutical University, Benxi, Liaoning 117004, PR China
| | - Huiying Chu
- Laboratory of Molecular Modeling and Design, State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, China
| | - Yongshan Zhao
- School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, Shenyang, Liaoning 110016, PR China.
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Keleş D, Sipahi M, İnanç-Sürer Ş, Djamgoz MB, Oktay G. Tetracaine downregulates matrix metalloproteinase activity and inhibits invasiveness of strongly metastatic MDA-MB-231 human breast cancer cells. Chem Biol Interact 2023; 385:110730. [PMID: 37806380 DOI: 10.1016/j.cbi.2023.110730] [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: 06/10/2023] [Revised: 09/19/2023] [Accepted: 09/25/2023] [Indexed: 10/10/2023]
Abstract
Tetracaine, a long-acting amino ester-type local anesthetic, prevents the initiation and propagation of action potentials by reversibly blocking voltage-gated sodium channels (VGSCs). These channels, which are highly expressed in several carcinomas (e.g. breast, prostate, colon and lung cancers) have been implicated in promoting metastatic behaviours. Recent evidence suggests that local anesthetics can suppress cancer progression. In this paper, we aimed to explore whether tetracaine would reduce the invasive characteristics of breast cancer cells. In a comparative approach, we used two cell lines of contracting metastatic potential: MDA-MB-231 (strongly metastatic) and MCF-7 (weakly metastatic). Tetracaine (50 μM and 75 μM) did not affect the proliferation of both MDA-MB-231 and MCF-7 cells. Importantly, tetracaine suppressed the migratory, invasive, and adhesive capacities of MDA-MB-231 cells; there was no effect on the motility of MCF-7 cells. Tetracaine treatment also significantly decreased the expression and activity levels of MMP-2 and MMP-9, whilst increasing TIMP-2 expression in MDA-MB-231 cells. On the other hand, VGSC α/Nav1.5 and VGSC-β1 mRNA and protein expression levels were not affected. We conclude that tetracaine has anti-invasive effects on breast cancer cells and may be exploited clinically, for example, in surgery and/or in combination therapies.
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Affiliation(s)
- Didem Keleş
- Izmir University of Economics, Vocational School of Health Services, Medical Laboratory Techniques, 35330, Balcova, Izmir, Turkey; Dokuz Eylül University, School of Medicine, Department of Medical Biochemistry, 35340, Inciralti, Izmir, Turkey
| | - Murat Sipahi
- Dokuz Eylül University, School of Medicine, Department of Medical Biochemistry, 35340, Inciralti, Izmir, Turkey
| | - Şeniz İnanç-Sürer
- Dokuz Eylül University, School of Medicine, Department of Medical Biochemistry, 35340, Inciralti, Izmir, Turkey
| | - Mustafa Ba Djamgoz
- Imperial College London, Department of Life Sciences, South Kensington Campus, SW7 2AZ, London, UK; Biotechnology Research Centre, Cyprus International University, Haspolat, Nicosia, TRNC, Mersin 10, Turkey
| | - Gülgün Oktay
- Dokuz Eylül University, School of Medicine, Department of Medical Biochemistry, 35340, Inciralti, Izmir, Turkey.
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4
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Bioelectronic medicines: Therapeutic potential and advancements in next-generation cancer therapy. Biochim Biophys Acta Rev Cancer 2022; 1877:188808. [DOI: 10.1016/j.bbcan.2022.188808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/07/2022] [Accepted: 09/27/2022] [Indexed: 11/22/2022]
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Edenfield S, Sims AM, Porretta C, Gould HJ, Paul D. Effect of Cell Cycle on Cell Surface Expression of Voltage-Gated Sodium Channels and Na +,K +-ATPase. Cells 2022; 11:cells11203240. [PMID: 36291108 PMCID: PMC9600173 DOI: 10.3390/cells11203240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 11/25/2022] Open
Abstract
Voltage-gated sodium channels (VGSCs) are the target for many therapies. Variation in membrane potential occurs throughout the cell cycle, yet little attention has been devoted to the role of VGSCs and Na+,K+-ATPases. We hypothesized that in addition to doubling DNA and cell membrane in anticipation of cell division, there should be a doubling of VGSCs and Na+,K+-ATPase compared to non-dividing cells. We tested this hypothesis in eight immortalized cell lines by correlating immunocytofluorescent labeling of VGSCs or Na+,K+-ATPase with propidium iodide or DAPI fluorescence using flow cytometry and imaging. Cell surface expression of VGSCs during phases S through M was double that seen during phases G0–G1. By contrast, Na+,K+-ATPase expression increased only 1.5-fold. The increases were independent of baseline expression of channels or pumps. The variation in VGSC and Na+,K+-ATPase expression has implications for both our understanding of sodium’s role in controlling the cell cycle and variability of treatments targeted at these components of the Na+ handling system.
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Affiliation(s)
- Samantha Edenfield
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
| | - Abigail M. Sims
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
| | - Constance Porretta
- Department of Microbiology and Immunology, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Harry J. Gould
- Department of Neurology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
- Department of Anesthesiology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
- Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
- Correspondence: (H.J.G.III); (D.P.)
| | - Dennis Paul
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
- Department of Neurology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
- Department of Anesthesiology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
- Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
- Dental and Craniofacial Biology Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, LA 70119, USA
- Correspondence: (H.J.G.III); (D.P.)
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Cancer as a Channelopathy—Appreciation of Complimentary Pathways Provides a Different Perspective for Developing Treatments. Cancers (Basel) 2022; 14:cancers14194627. [PMID: 36230549 PMCID: PMC9562872 DOI: 10.3390/cancers14194627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/17/2022] [Accepted: 09/21/2022] [Indexed: 12/15/2022] Open
Abstract
Simple Summary While improvements in technology have improved our ability to treat many forms of cancer when diagnosed at an early stage of the disease, the ability to improve survival and quality of life for patients with late stage disease has been limited, largely due to the ability of cancer cells to evade destruction when treatments block preferred paths for survival. Here, we review the role that ions and ion channels play in normal cell function, the development of disease and their role in the life and death of a cell. It is hoped that viewing cancer from the perspective of altered ion channel expression and ion balance may provide a novel approach for developing more effective treatments for this devastating disease. Abstract Life depends upon the ability of cells to evaluate and adapt to a constantly changing environment and to maintain internal stability to allow essential biochemical reactions to occur. Ions and ion channels play a crucial role in this process and are essential for survival. Alterations in the expression of the transmembrane proteins responsible for maintaining ion balance that occur as a result of mutations in the genetic code or in response to iatrogenically induced changes in the extracellular environment is a characteristic feature of oncogenesis and identifies cancer as one of a constellation of diseases known as channelopathies. The classification of cancer as a channelopathy provides a different perspective for viewing the disease. Potentially, it may expand opportunities for developing novel ways to affect or reverse the deleterious changes that underlie establishing and sustaining disease and developing tolerance to therapeutic attempts at treatment. The role of ions and ion channels and their interactions in the cell’s ability to maintain ionic balance, homeostasis, and survival are reviewed and possible approaches that mitigate gain or loss of ion channel function to contribute to new or enhance existing cancer therapies are discussed.
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The Role of Targeted Osmotic Lysis in the Treatment of Advanced Carcinoma in Companion Animals: A Case Series. Case Rep Vet Med 2022; 2022:2747108. [PMID: 35967596 PMCID: PMC9363929 DOI: 10.1155/2022/2747108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 06/29/2022] [Indexed: 11/17/2022] Open
Abstract
Background Targeted osmotic lysis (TOL) is a novel technology that involves concomitant stimulation of voltage-gated sodium channels (VGSCs) and the pharmacological blockade of Na+, K+-ATPase causing lysis of highly malignant cancer cells. Hypothesis/Objectives. TOL offers an option for treating advanced carcinomas in companion animals. Animals. Two cats and 2 dogs that presented to veterinary hospitals for evaluation and treatment of one of several forms of carcinoma. Methods Digoxin was administered to achieve steady-state, therapeutic concentrations. The animals were then exposed to pulsed electric field stimulation. Pre- and posttreatment assessments of tumor size and quality of life were compared. The treatment frequency and survivability varied, based on the patient's premorbid functioning and response to treatment. Results Regardless of cancer type, TOL consistently increased survival beyond expected, often improving, but without compromising of quality of life. Conclusions and Clinical Importance. TOL warrants consideration as an option for managing advanced carcinomas.
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Azahar II, Sharudin NA, Noor Din AHM, Che Has AT, Mohd Nafi SN, Jaafar H, Mokhtar NF. nNav1.5 expression is associated with glutamate level in breast cancer cells. Biol Res 2022; 55:18. [PMID: 35488278 PMCID: PMC9052458 DOI: 10.1186/s40659-022-00387-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 03/31/2022] [Indexed: 12/26/2022] Open
Abstract
Background Glutamate and voltage-gated sodium channels, both have been the target of intense investigation for its involvement in carcinogenesis and progression of malignant disease. Breast cancer with increased level of glutamate often metastasize to other organs (especially bone), whilst re-expression of ‘neonatal’ Nav1.5, nNav1.5 in breast cancer is known to promote cell invasion in vitro, metastasis in vivo and positive lymph node metastasis in patients. Methods In this study, the role of nNav1.5 in regulating glutamate level in human breast cancer cells was examined using pharmacological approach (VGSCs specific blocker, TTX, glutamate release inhibitor, riluzole and siRNA-nNav1.5). Effect of these agents were evaluated based on endogenous and exogenous glutamate concentration using glutamate fluorometric assay, mRNA expression of nNav1.5 using qPCR and finally, invasion using 3D culture assay. Results Endogenous and exogenous glutamate levels were significantly higher in aggressive human breast cancer cells, MDA-MB-231 cells compared to less aggressive human breast cancer cells, MCF-7 and non-cancerous human breast epithelial cells, MCF-10A. Treatment with TTX to MDA-MB-231 cells resulted in significant reduction of endogenous and exogenous glutamate levels corresponded with significant suppression of cell invasion. Subsequently, downregulation of nNav1.5 gene was observed in TTX-treated cells. Conclusions An interesting link between nNav1.5 expression and glutamate level in aggressive breast cancer cells was detected and requires further investigation.
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Affiliation(s)
- Irfan Irsyad Azahar
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Health Campus, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Nur Aishah Sharudin
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Health Campus, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Ahmad Hafiz Murtadha Noor Din
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Health Campus, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Ahmad Tarmizi Che Has
- Department of Neuroscience, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, 16150, Kubang Kerian, Kelantan, Malaysia
| | - Siti Norasikin Mohd Nafi
- Department of Pathology, School of Medical Sciences, Universiti Sains Malaysia, Health, Kelantan, Malaysia
| | - Hasnan Jaafar
- Department of Pathology, School of Medical Sciences, Universiti Sains Malaysia, Health, Kelantan, Malaysia
| | - Noor Fatmawati Mokhtar
- Institute for Research in Molecular Medicine (INFORMM), Universiti Sains Malaysia, Health Campus, 16150, Kubang Kerian, Kelantan, Malaysia.
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Gould HJ, Paul D. Targeted Osmotic Lysis: A Novel Approach to Targeted Cancer Therapies. Biomedicines 2022; 10:biomedicines10040838. [PMID: 35453588 PMCID: PMC9027517 DOI: 10.3390/biomedicines10040838] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 02/04/2023] Open
Abstract
The conventional treatment of cancer has been based on the delivery of non-selective toxins and/or ionizing energy that affect both the cancer and normal tissues in the hope of destroying the offending disease before killing the patient. Unfortunately, resistance often develops to these treatments and patients experience severe, dose-limiting adverse effects that reduce treatment efficacy and compromise quality of life. Recent advances in our knowledge of the biology of tumor cells and their microenvironment, the recognition of surface proteins that are unique to specific cancers and essential to cell growth and survival and signaling pathways associate with invasion and metastasis have led to the development of targeted therapies that are able to identify specific cellular markers and more selectively deliver lethal treatment to the invading cancer thus improving efficacy and limiting adverse effects. In the context of targeted approaches to cancer therapy, we present targeted osmotic lysis as a novel and fundamentally different approach for treating advanced-stage carcinoma that exploits the conserved relationship between voltage-gated sodium channels and Na+, K+-ATPase and has the potential to increase survival without compromising quality of life in a broad spectrum of highly malignant forms of cancer.
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Affiliation(s)
- Harry J. Gould
- Department of Neurology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
- Correspondence: (H.J.G.III); (D.P.); Tel.: +1-504-568-5080 (H.J.G.III); +1-504-568-4745 (D.P.)
| | - Dennis Paul
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
- Correspondence: (H.J.G.III); (D.P.); Tel.: +1-504-568-5080 (H.J.G.III); +1-504-568-4745 (D.P.)
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Discovering the Triad between Nav1.5, Breast Cancer, and the Immune System: A Fundamental Review and Future Perspectives. Biomolecules 2022; 12:biom12020310. [PMID: 35204811 PMCID: PMC8869595 DOI: 10.3390/biom12020310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Revised: 02/12/2022] [Accepted: 02/13/2022] [Indexed: 02/05/2023] Open
Abstract
Nav1.5 is one of the nine voltage-gated sodium channel-alpha subunit (VGSC-α) family members. The Nav1.5 channel typically carries an inward sodium ion current that depolarises the membrane potential during the upstroke of the cardiac action potential. The neonatal isoform of Nav1.5, nNav1.5, is produced via VGSC-α alternative splicing. nNav1.5 is known to potentiate breast cancer metastasis. Despite their well-known biological functions, the immunological perspectives of these channels are poorly explored. The current review has attempted to summarise the triad between Nav1.5 (nNav1.5), breast cancer, and the immune system. To date, there is no such review available that encompasses these three components as most reviews focus on the molecular and pharmacological prospects of Nav1.5. This review is divided into three major subsections: (1) the review highlights the roles of Nav1.5 and nNav1.5 in potentiating the progression of breast cancer, (2) focuses on the general connection between breast cancer and the immune system, and finally (3) the review emphasises the involvements of Nav1.5 and nNav1.5 in the functionality of the immune system and the immunogenicity. Compared to the other subsections, section three is pretty unexploited; it would be interesting to study this subsection as it completes the triad.
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Fuchs E, Messerer DAC, Karpel-Massler G, Fauler M, Zimmer T, Jungwirth B, Föhr KJ. Block of Voltage-Gated Sodium Channels as a Potential Novel Anti-cancer Mechanism of TIC10. Front Pharmacol 2021; 12:737637. [PMID: 34744721 PMCID: PMC8567104 DOI: 10.3389/fphar.2021.737637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 09/15/2021] [Indexed: 12/19/2022] Open
Abstract
Background: Tumor therapeutics are aimed to affect tumor cells selectively while sparing healthy ones. For this purpose, a huge variety of different drugs are in use. Recently, also blockers of voltage-gated sodium channels (VGSCs) have been recognized to possess potentially beneficial effects in tumor therapy. As these channels are a frequent target of numerous drugs, we hypothesized that currently used tumor therapeutics might have the potential to block VGSCs in addition to their classical anti-cancer activity. In the present work, we have analyzed the imipridone TIC10, which belongs to a novel class of anti-cancer compounds, for its potency to interact with VGSCs. Methods: Electrophysiological experiments were performed by means of the patch-clamp technique using heterologously expressed human heart muscle sodium channels (hNav1.5), which are among the most common subtypes of VGSCs occurring in tumor cells. Results: TIC10 angular inhibited the hNav1.5 channel in a state- but not use-dependent manner. The affinity for the resting state was weak with an extrapolated Kr of about 600 μM. TIC10 most probably did not interact with fast inactivation. In protocols for slow inactivation, a half-maximal inhibition occurred around 2 µM. This observation was confirmed by kinetic studies indicating that the interaction occurred with a slow time constant. Furthermore, TIC10 also interacted with the open channel with an affinity of approximately 4 µM. The binding site for local anesthetics or a closely related site is suggested as a possible target as the affinity for the well-characterized F1760K mutant was reduced more than 20-fold compared to wild type. Among the analyzed derivatives, ONC212 was similarly effective as TIC10 angular, while TIC10 linear more selectively interacted with the different states. Conclusion: The inhibition of VGSCs at low micromolar concentrations might add to the anti-tumor properties of TIC10.
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Affiliation(s)
- Eva Fuchs
- Department of Anesthesiology and Intensive Care Medicine, University Hospital of Ulm, Ulm, Germany
| | | | | | - Michael Fauler
- Institute of General Physiology, University of Ulm, Ulm, Germany
| | - Thomas Zimmer
- Institute of Physiology, University Hospital of Jena, Jena, Germany
| | - Bettina Jungwirth
- Department of Anesthesiology and Intensive Care Medicine, University Hospital of Ulm, Ulm, Germany
| | - Karl Josef Föhr
- Department of Anesthesiology and Intensive Care Medicine, University Hospital of Ulm, Ulm, Germany
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12
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Fraser SP, Onkal R, Theys M, Bosmans F, Djamgoz MBA. Neonatal Na V 1.5: Pharmacological distinctiveness of a cancer-related voltage-gated sodium channel splice variant. Br J Pharmacol 2021; 179:473-486. [PMID: 34411279 DOI: 10.1111/bph.15668] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 07/26/2021] [Accepted: 07/31/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Voltage-gated sodium (NaV ) channels are expressed de novo in carcinomas where their activity promotes invasiveness. Breast and colon cancer cells express the neonatal splice variant of NaV 1.5 (nNaV 1.5) which has several amino acid substitutions in the domain I voltage-sensor compared to its adult counterpart (aNaV 1.5). This study aimed to determine whether nNaV 1.5 could be distinguished pharmacologically from aNaV 1.5. EXPERIMENTAL APPROACH Cells expressing either nNaV 1.5 or aNaV 1.5 were exposed to small-molecule inhibitors, an antibody or natural toxins, and changes in electrophysiological parameters were measured. Stable expression in EBNA cells and transient expression in Xenopus laevis oocytes were used. Currents were recorded by whole-cell patch clamp and two-electrode voltage-clamp, respectively. KEY RESULTS Several clinically-used blockers of Nav channels (lidocaine, procaine, phenytoin, mexiletine, ranolazine and riluzole) could not distinguish between nNaV 1.5 or aNaV 1.5. On the other hand, two tarantula toxins (HaTx and ProTx-II) and a polyclonal antibody (NESOpAb) preferentially inhibited currents elicited by either nNaV 1.5 or aNaV 1.5 by binding to the spliced region of the channel. Furthermore, the amino acid residue at position 211 (aspartate in aNaV 1.5/lysine in nNaV 1.5), i.e. the charge reversal in the spliced region of the channel, played a key role in the selectivity especially in the antibody binding. CONCLUSION AND IMPLICATIONS We conclude that the cancer-related nNaV 1.5 channel can be distinguished pharmacologically from its nearest neighbour, aNaV 1.5. Thus, it may be possible to design small molecules as anti-metastatic drugs for non-toxic therapy of nNaV 1.5-expressing carcinomas.
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Affiliation(s)
- Scott P Fraser
- Imperial College London, Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, London, UK
| | - Rustem Onkal
- Imperial College London, Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, London, UK.,Biotechnology Research Centre, Cyprus International University, Haspolat, Nicosia, TRNC, Mersin 10, Turkey
| | - Margaux Theys
- Department of Basic and Applied Medical Sciences, University of Ghent, Ghent, Belgium
| | - Frank Bosmans
- Department of Basic and Applied Medical Sciences, University of Ghent, Ghent, Belgium
| | - Mustafa B A Djamgoz
- Imperial College London, Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, London, UK.,Biotechnology Research Centre, Cyprus International University, Haspolat, Nicosia, TRNC, Mersin 10, Turkey
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13
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Lastraioli E, Fraser SP, Guzel RM, Iorio J, Bencini L, Scarpi E, Messerini L, Villanacci V, Cerino G, Ghezzi N, Perrone G, Djamgoz MBA, Arcangeli A. Neonatal Nav1.5 Protein Expression in Human Colorectal Cancer: Immunohistochemical Characterization and Clinical Evaluation. Cancers (Basel) 2021; 13:3832. [PMID: 34359733 PMCID: PMC8345135 DOI: 10.3390/cancers13153832] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/22/2021] [Accepted: 07/23/2021] [Indexed: 12/30/2022] Open
Abstract
Voltage-gated Na+ channels (VGSCs) are expressed widely in human carcinomas and play a significant role in promoting cellular invasiveness and metastasis. However, human tissue-based studies and clinical characterization are lacking. In several carcinomas, including colorectal cancer (CRCa), the predominant VGSC is the neonatal splice variant of Nav1.5 (nNav1.5). The present study was designed to determine the expression patterns and clinical relevance of nNav1.5 protein in human CRCa tissues from patients with available clinicopathological history. The immunohistochemistry was made possible by the use of a polyclonal antibody (NESOpAb) specific for nNav1.5. The analysis showed that, compared with normal mucosa, nNav1.5 expression occurred in CRCa samples (i) at levels that were significantly higher and (ii) with a pattern that was more delineated (i.e., apical/basal or mixed). A surprisingly high level of nNav1.5 protein expression also occurred in adenomas, but this was mainly intracellular and diffuse. nNav1.5 showed a statistically significant association with TNM stage, highest expression being associated with TNM IV and metastatic status. Interestingly, nNav1.5 expression co-occurred with other biomarkers associated with metastasis, including hERG1, KCa3.1, VEGF-A, Glut1, and EGFR. Finally, univariate analysis showed that nNav1.5 expression had an impact on progression-free survival. We conclude (i) that nNav1.5 could represent a novel clinical biomarker ('companion diagnostic') useful to better stratify CRCa patients and (ii) that since nNav1.5 expression is functional, it could form the basis of anti-metastatic therapies including in combination with standard treatments.
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Affiliation(s)
- Elena Lastraioli
- Department of Experimental and Clinical Medicine, University of Florence, viale GB Morgagni 50, 50134 Florence, Italy; (E.L.); (J.I.); (L.M.); (A.A.)
| | - Scott P. Fraser
- Department of Life Sciences, South Kensington Campus, Imperial College London, London SW7 2AZ, UK; (S.P.F.); (R.M.G.)
| | - R. Mine Guzel
- Department of Life Sciences, South Kensington Campus, Imperial College London, London SW7 2AZ, UK; (S.P.F.); (R.M.G.)
| | - Jessica Iorio
- Department of Experimental and Clinical Medicine, University of Florence, viale GB Morgagni 50, 50134 Florence, Italy; (E.L.); (J.I.); (L.M.); (A.A.)
| | - Lapo Bencini
- Department of Oncology, Division of Oncologic Surgery and Robotics, Azienda Ospedaliero-Universitaria Careggi, Largo Brambilla 3, 50134 Florence, Italy; (L.B.); (G.C.); (N.G.)
| | - Emanuela Scarpi
- Unit of Biostatistics and Clinical Trials, IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, Via P Maroncelli 40, 47014 Meldola, Italy;
| | - Luca Messerini
- Department of Experimental and Clinical Medicine, University of Florence, viale GB Morgagni 50, 50134 Florence, Italy; (E.L.); (J.I.); (L.M.); (A.A.)
| | - Vincenzo Villanacci
- Institute of Pathology, ASST Spedali Civili di Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy;
| | - Giulia Cerino
- Department of Oncology, Division of Oncologic Surgery and Robotics, Azienda Ospedaliero-Universitaria Careggi, Largo Brambilla 3, 50134 Florence, Italy; (L.B.); (G.C.); (N.G.)
| | - Niccolo’ Ghezzi
- Department of Oncology, Division of Oncologic Surgery and Robotics, Azienda Ospedaliero-Universitaria Careggi, Largo Brambilla 3, 50134 Florence, Italy; (L.B.); (G.C.); (N.G.)
| | - Giuseppe Perrone
- Pathology Unit, Campus Bio-Medico University, via A del Portillo 200, 00128 Rome, Italy;
| | - Mustafa B. A. Djamgoz
- Department of Life Sciences, South Kensington Campus, Imperial College London, London SW7 2AZ, UK; (S.P.F.); (R.M.G.)
- Cyprus International University, Biotechnology Research Centre, Haspolat, Mersin 10, Cyprus
| | - Annarosa Arcangeli
- Department of Experimental and Clinical Medicine, University of Florence, viale GB Morgagni 50, 50134 Florence, Italy; (E.L.); (J.I.); (L.M.); (A.A.)
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14
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Gould HJ, Miller PR, Edenfield S, Sherman KJ, Brady CK, Paul D. Emergency Use of Targeted Osmotic Lysis for the Treatment of a Patient with Aggressive Late-Stage Squamous Cell Carcinoma of the Cervix. ACTA ACUST UNITED AC 2021; 28:2115-2122. [PMID: 34201380 PMCID: PMC8293172 DOI: 10.3390/curroncol28030196] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/26/2021] [Accepted: 06/06/2021] [Indexed: 12/17/2022]
Abstract
Upregulation of voltage-gated sodium channels (VGSCs) and Na+/K+-ATPase (sodium pumps) is common across most malignant carcinomas. Targeted osmotic lysis (TOL) is a developing technology in which the concomitant stimulation of VGSCs and pharmacological blockade of sodium pumps causes rapid selective osmotic lysis of carcinoma cells. This treatment of cervical carcinoma is evidence that TOL is a safe, well-tolerated and effective treatment for aggressive advanced carcinomas that has the potential to extend life without compromising its quality. TOL is likely to have broad application for the treatment of advanced-stage carcinomas.
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Affiliation(s)
- Harry J. Gould
- Department of Neurology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
- Oleander Medical Technologies, Baton Rouge, LA 70803, USA; (P.R.M.); (D.P.)
- Correspondence: ; Tel.: +1-504-568-5080
| | - Paige R. Miller
- Oleander Medical Technologies, Baton Rouge, LA 70803, USA; (P.R.M.); (D.P.)
| | - Samantha Edenfield
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA; (S.E.); (K.J.S.)
| | - Kelly Jean Sherman
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA; (S.E.); (K.J.S.)
| | - Chad K. Brady
- Department of Radiology, West Virginia University Medical School, Morgantown, WV 26506, USA;
| | - Dennis Paul
- Oleander Medical Technologies, Baton Rouge, LA 70803, USA; (P.R.M.); (D.P.)
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA; (S.E.); (K.J.S.)
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15
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Levin M. Bioelectrical approaches to cancer as a problem of the scaling of the cellular self. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2021; 165:102-113. [PMID: 33961843 DOI: 10.1016/j.pbiomolbio.2021.04.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 04/26/2021] [Accepted: 04/29/2021] [Indexed: 10/21/2022]
Abstract
One lens with which to understand the complex phenomenon of cancer is that of developmental biology. Cancer is the inevitable consequence of a breakdown of the communication that enables individual cells to join into computational networks that work towards large-scale, morphogenetic goals instead of more primitive, unicellular objectives. This perspective suggests that cancer may be a physiological disorder, not necessarily due to problems with the genetically-specified protein hardware. One aspect of morphogenetic coordination is bioelectric signaling, and indeed an abnormal bioelectric signature non-invasively reveals the site of incipient tumors in amphibian models. Functionally, a disruption of resting potential states triggers metastatic melanoma phenotypes in embryos with no genetic defects or carcinogen exposure. Conversely, optogenetic or molecular-biological modulation of bioelectric states can override powerful oncogenic mutations and prevent or normalize tumors. The bioelectrically-mediated information flows that harness cells toward body-level anatomical outcomes represent a very attractive and tractable endogenous control system, which is being targeted by emerging approaches to cancer.
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Affiliation(s)
- Michael Levin
- Allen Discovery Center at Tufts University, 200 Boston Ave., Suite 4600, Medford, MA, 02155, USA.
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16
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Phillips JA, Hutchings C, Djamgoz MBA. Clinical Potential of Nerve Input to Tumors: A Bioelectricity Perspective. Bioelectricity 2021; 3:14-26. [PMID: 34476375 DOI: 10.1089/bioe.2020.0051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
We support the notion that the neural connections of the tumor microenvironment (TME) and the associated 'bioelectricity' play significant role in the pathophysiology of cancer. In several cancers, the nerve input promotes the cancer process. While straightforward surgical denervation of tumors, therefore, could improve prognosis, resulting side effects of such a procedure would be unpredictable and irreversible. On the other hand, tumor innervation can be manipulated effectively for therapeutic purposes by alternative novel approaches broadly termed "electroceuticals." In this perspective, we evaluate the clinical potential of targeting the TME first through manipulation of the nerve input itself and second by application of electric fields directly to the tumor. The former encompasses several different biophysical and biochemical approaches. These include implantable devices, nanoparticles, and electroactive polymers, as well as optogenetics and chemogenetics. As regard bioelectrical manipulation of the tumor itself, the "tumor-treating field" technique, applied to gliomas commonly in combination with chemotherapy, is evaluated. Also, as electroceuticals, drugs acting on ion channels and neurotransmitter receptors are highlighted for completeness. It is concluded, first, that electroceuticals comprise a broad range of biomedical tools. Second, such electroceuticals present significant clinical potential for exploiting the neural component of the TME as a strategy against cancer. Finally, the inherent bioelectric characteristics of tumors themselves are also amenable to complementary approaches. Collectively, these represent an evolving, dynamic field and further progress and applications can be expected to follow both conceptually and technically.
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Affiliation(s)
- Jade A Phillips
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Charlotte Hutchings
- Department of Life Sciences, Imperial College London, London, United Kingdom
| | - Mustafa B A Djamgoz
- Department of Life Sciences, Imperial College London, London, United Kingdom.,Biotechnology Research Center, Cyprus International University, Nicosia, North Cyprus
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17
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Sodium ion channels as potential therapeutic targets for cancer metastasis. Drug Discov Today 2021; 26:1136-1147. [PMID: 33545383 DOI: 10.1016/j.drudis.2021.01.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/31/2020] [Accepted: 01/27/2021] [Indexed: 12/28/2022]
Abstract
Is it possible to develop drugs for the treatment of a specific type of metastatic cancer by targeting sodium ion channels?
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18
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Robinson AJ, Jain A, Sherman HG, Hague RJM, Rahman R, Sanjuan‐Alberte P, Rawson FJ. Toward Hijacking Bioelectricity in Cancer to Develop New Bioelectronic Medicine. ADVANCED THERAPEUTICS 2021. [DOI: 10.1002/adtp.202000248] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Andie J. Robinson
- Regenerative Medicine and Cellular Therapies, School of Pharmacy University of Nottingham Nottingham NG7 2RD UK
| | - Akhil Jain
- Regenerative Medicine and Cellular Therapies, School of Pharmacy University of Nottingham Nottingham NG7 2RD UK
| | - Harry G. Sherman
- Regenerative Medicine and Cellular Therapies, School of Pharmacy University of Nottingham Nottingham NG7 2RD UK
| | - Richard J. M. Hague
- Centre for Additive Manufacturing, Faculty of Engineering University of Nottingham Nottingham NG8 1BB UK
| | - Ruman Rahman
- Children's Brain Tumour Research Centre, Biodiscovery Institute, School of Medicine University of Nottingham Nottingham NG7 2RD UK
| | - Paola Sanjuan‐Alberte
- Regenerative Medicine and Cellular Therapies, School of Pharmacy University of Nottingham Nottingham NG7 2RD UK
- Department of Bioengineering and iBB‐Institute for Bioengineering and Biosciences, Instituto Superior Técnico Universidade de Lisboa Lisbon 1049‐001 Portugal
| | - Frankie J. Rawson
- Regenerative Medicine and Cellular Therapies, School of Pharmacy University of Nottingham Nottingham NG7 2RD UK
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19
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Aktas HG, Ayan H. Oleuropein: A Potential Inhibitor for Prostate Cancer Cell Motility by Blocking Voltage-Gated Sodium Channels. Nutr Cancer 2020; 73:1758-1767. [PMID: 32842786 DOI: 10.1080/01635581.2020.1807575] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In this study, we investigated whether olive leaf and oleuropein have the potential to stop cell motility, which a metastatic cell behavior by blocking voltage-gated sodium channels (VGSCs). For this purpose, it was first prepared the aqueous extract of olive leaves (AOLE). Then it was assayed the effect on the motility of MAT-LyLu, a highly metastatic Dunning rat prostate adenocarcinoma cells of this extract. The phenolic content of AOLE was analyzed using LC-MS/MS instrument. It was observed that oleuropein was the most finding compound in AOLE. Therefore, whether oleuropein was responsible for the inhibitory effect of AOLE on the MAT-LyLu cell movement was tested. Nontoxic oleuropein concentrations and those that did not affect proliferation on MAT-LyLu cells were determined. Subsequently, it was examined the effects of oleuropein on the lateral and vertical movement of MAT-LyLu cells. To elucidate the mechanism of oleuropein affecting cell motility, whether it suppressed mRNA expression of SCN9A, which encodes the VGSC was analyzed. Accordingly, oleuropein suppressed the movement of MAT-LyLu cells by reducing SCN9A mRNA expression. In conclusion, we report the first time that oleuropein might be considered as a potential antimetastatic agent for prostate cancer due to its blocking effect on VGSC-mediated cell motility.
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Affiliation(s)
- Hatice Gumushan Aktas
- Faculty of Arts & Sciences, Biology Department, Harran University, Sanliurfa, Turkey
| | - Huda Ayan
- Faculty of Arts & Sciences, Biology Department, Harran University, Sanliurfa, Turkey
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20
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Paul D, Maggi P, Piero FD, Scahill SD, Sherman KJ, Edenfield S, Gould HJ. Targeted Osmotic Lysis of Highly Invasive Breast Carcinomas Using Pulsed Magnetic Field Stimulation of Voltage-Gated Sodium Channels and Pharmacological Blockade of Sodium Pumps. Cancers (Basel) 2020; 12:cancers12061420. [PMID: 32486340 PMCID: PMC7352419 DOI: 10.3390/cancers12061420] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 12/11/2022] Open
Abstract
Abstract: Concurrent activation of voltage-gated sodium channels (VGSCs) and blockade of Na+ pumps causes a targeted osmotic lysis (TOL) of carcinomas that over-express the VGSCs. Unfortunately, electrical current bypasses tumors or tumor sections because of the variable resistance of the extracellular microenvironment. This study assesses pulsed magnetic fields (PMFs) as a potential source for activating VGSCs to initiate TOL in vitro and in vivo as PMFs are unaffected by nonconductive tissues. In vitro, PMFs (0-80 mT, 10 msec pulses, 15 pps for 10 min) combined with digoxin-lysed (500 nM) MDA-MB-231 breast cancer cells stimulus-dependently. Untreated, stimulation-only, and digoxin-only control cells did not lyse. MCF-10a normal breast cells were also unaffected. MDA-MB-231 cells did not lyse in a Na+-free buffer. In vivo, 30 min of PMF stimulation of MDA-MB-231 xenografts in J/Nu mice or 4T1 homografts in BALB/c mice, concurrently treated with 7 mg/kg digoxin reduced tumor size by 60-100%. Kidney, spleen, skin and muscle from these animals were unaffected. Stimulation-only and digoxin-only controls were similar to untreated tumors. BALB/C mice with 4T1 homografts survived significantly longer than mice in the three control groups. The data presented is evidence that the PMFs to activate VGSCs in TOL provide sufficient energy to lyse highly malignant cells in vitro and to reduce tumor growth of highly malignant grafts and improve host survival in vivo, thus supporting targeted osmotic lysis of cancer as a possible method for treating late-stage carcinomas without compromising noncancerous tissues.
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Affiliation(s)
- Dennis Paul
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA; (D.P.); (S.D.S.); (K.J.S.); (S.E.)
| | - Paul Maggi
- Department of Physics, Louisiana State University, Baton Rouge, LA 70808, USA.;
| | - Fabio Del Piero
- Department of Pathobiological Sciences and Louisiana Animal Disease Diagnostic Laboratory (LADDL), Louisiana State University School of Veterinary Medicine, Baton Rouge, LA 70808, USA.;
| | - Steven D. Scahill
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA; (D.P.); (S.D.S.); (K.J.S.); (S.E.)
| | - Kelly Jean Sherman
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA; (D.P.); (S.D.S.); (K.J.S.); (S.E.)
| | - Samantha Edenfield
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA; (D.P.); (S.D.S.); (K.J.S.); (S.E.)
| | - Harry J. Gould
- Department of Neurology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, USA
- Correspondence: ; Tel.: +1-504-568-5080
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21
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Rizaner N, Uzun S, Fraser SP, Djamgoz MBA, Altun S. Riluzole: Anti-invasive effects on rat prostate cancer cells under normoxic and hypoxic conditions. Basic Clin Pharmacol Toxicol 2020; 127:254-264. [PMID: 32304618 DOI: 10.1111/bcpt.13417] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 04/03/2020] [Accepted: 04/08/2020] [Indexed: 11/30/2022]
Abstract
Anti-invasive effects of riluzole and ranolazine, a neuro-protectant and an anti-anginal drug, respectively, on Mat-LyLu rat prostate cancer (PCa) cells were tested in vitro (a) at non-toxic doses and (b) under both normoxic and hypoxic conditions, the latter common to growing tumours. Tetrodotoxin (TTX) was used as a positive control. Hypoxia had no effect on cell viability but reduced growth at 48 hours. Riluzole (5 μmol/L) or ranolazine (20 μmol/L) had no effect on cell viability or growth under normoxia or hypoxia over 24 hours. Matrigel invasion was not affected by hypoxia but inhibited by TTX, ranolazine and riluzole under a range of conditions. The expression of Nav1.7 mRNA, the prevailing, pro-invasive voltage-gated sodium channel α-subunit (VGSCα), was up-regulated by hypoxia. Riluzole had no effect on Nav1.7 mRNA expression in normoxia but significantly reduced it in hypoxia. VGSCα protein expression in plasma membrane was reduced in hypoxia; riluzole increased it but only under hypoxia. It was concluded (a) that riluzole and ranolazine have anti-invasive effects on rat PCa cells and (b) that Nav1.7 mRNA and protein expression can be modulated by riluzole under hypoxia. Overall, therefore, riluzole and ranolazine may ultimately be "repurposed" as anti-metastatic drugs against PCa.
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Affiliation(s)
- Nahit Rizaner
- Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, Imperial College London, London, UK.,Biotechnology Research Centre, Cyprus International University, Haspolat, Turkey
| | - Sercan Uzun
- Department of Biology, Faculty of Science, Istanbul University, Istanbul, Turkey
| | - Scott P Fraser
- Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, Imperial College London, London, UK
| | - Mustafa B A Djamgoz
- Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, Imperial College London, London, UK.,Biotechnology Research Centre, Cyprus International University, Haspolat, Turkey
| | - Seyhan Altun
- Department of Biology, Faculty of Science, Istanbul University, Istanbul, Turkey.,Department of Molecular Biology and Genetics, Faculty of Science and Letters, Istanbul Kultur University, Istanbul, Turkey
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22
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The Interplay of Dysregulated pH and Electrolyte Imbalance in Cancer. Cancers (Basel) 2020; 12:cancers12040898. [PMID: 32272658 PMCID: PMC7226178 DOI: 10.3390/cancers12040898] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 04/01/2020] [Accepted: 04/02/2020] [Indexed: 12/11/2022] Open
Abstract
Cancer cells and tissues have an aberrant regulation of hydrogen ion dynamics driven by a combination of poor vascular perfusion, regional hypoxia, and increased the flux of carbons through fermentative glycolysis. This leads to extracellular acidosis and intracellular alkalinization. Dysregulated pH dynamics influence cancer cell biology, from cell transformation and tumorigenesis to proliferation, local growth, invasion, and metastasis. Moreover, this dysregulated intracellular pH (pHi) drives a metabolic shift to increased aerobic glycolysis and reduced mitochondrial oxidative phosphorylation, referred to as the Warburg effect, or Warburg metabolism, which is a selective feature of cancer. This metabolic reprogramming confers a thermodynamic advantage on cancer cells and tissues by protecting them against oxidative stress, enhancing their resistance to hypoxia, and allowing a rapid conversion of nutrients into biomass to enable cell proliferation. Indeed, most cancers have increased glucose uptake and lactic acid production. Furthermore, cancer cells have very dysregulated electrolyte balances, and in the interaction of the pH dynamics with electrolyte, dynamics is less well known. In this review, we highlight the interconnected roles of dysregulated pH dynamics and electrolytes imbalance in cancer initiation, progression, adaptation, and in determining the programming and reprogramming of tumor cell metabolism.
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23
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Bonzanni M, Payne SL, Adelfio M, Kaplan DL, Levin M, Oudin MJ. Defined extracellular ionic solutions to study and manipulate the cellular resting membrane potential. Biol Open 2020; 9:bio048553. [PMID: 31852666 PMCID: PMC6994931 DOI: 10.1242/bio.048553] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 12/04/2019] [Indexed: 12/19/2022] Open
Abstract
All cells possess an electric potential across their plasma membranes and can generate and receive bioelectric signals. The cellular resting membrane potential (RMP) can regulate cell proliferation, differentiation and apoptosis. Current approaches to measure the RMP rely on patch clamping, which is technically challenging, low-throughput and not widely available. It is therefore critical to develop simple strategies to measure, manipulate and characterize the RMP. Here, we present a simple methodology to study the RMP of non-excitable cells and characterize the contribution of individual ions to the RMP using a voltage-sensitive dye. We define protocols using extracellular solutions in which permeable ions (Na+, Cl- and K+) are substituted with non-permeable ions [N-Methyl-D-glucamine (NMDG), gluconate, choline, SO42-]. The resulting RMP modifications were assessed with both patch clamp and a voltage sensitive dye. Using an epithelial and cancer cell line, we demonstrate that the proposed ionic solutions can selectively modify the RMP and help determine the relative contribution of ionic species in setting the RMP. The proposed method is simple and reproducible and will make the study of bioelectricity more readily available to the cell biology community.This article has an associated First Person interview with the first author of the paper.
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Affiliation(s)
- Mattia Bonzanni
- Department of Biomedical Engineering, Tufts University, Medford, 02155 MA, USA
- Allen Discovery Center, Tufts University, Medford, 02155 MA, USA
| | - Samantha L Payne
- Department of Biomedical Engineering, Tufts University, Medford, 02155 MA, USA
| | - Miryam Adelfio
- Department of Biomedical Engineering, Tufts University, Medford, 02155 MA, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, 02155 MA, USA
- Allen Discovery Center, Tufts University, Medford, 02155 MA, USA
| | - Michael Levin
- Allen Discovery Center, Tufts University, Medford, 02155 MA, USA
| | - Madeleine J Oudin
- Department of Biomedical Engineering, Tufts University, Medford, 02155 MA, USA
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24
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Missair A, Cata JP, Votta-Velis G, Johnson M, Borgeat A, Tiouririne M, Gottumukkala V, Buggy D, Vallejo R, Marrero EBD, Sessler D, Huntoon MA, Andres JD, Casasola ODL. Impact of perioperative pain management on cancer recurrence: an ASRA/ESRA special article. Reg Anesth Pain Med 2019; 44:13-28. [PMID: 30640648 DOI: 10.1136/rapm-2018-000001] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 05/31/2018] [Accepted: 06/05/2018] [Indexed: 12/31/2022]
Abstract
Cancer causes considerable suffering and 80% of advanced cancer patients experience moderate to severe pain. Surgical tumor excision remains a cornerstone of primary cancer treatment, but is also recognized as one of the greatest risk factors for metastatic spread. The perioperative period, characterized by the surgical stress response, pharmacologic-induced angiogenesis, and immunomodulation results in a physiologic environment that supports tumor spread and distant reimplantation.In the perioperative period, anesthesiologists may have a brief and uniquewindow of opportunity to modulate the unwanted consequences of the stressresponse on the immune system and minimize residual disease. This reviewdiscusses the current research on analgesic therapies and their impact ondisease progression, followed by an evidence-based evaluation of perioperativepain interventions and medications.
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Affiliation(s)
- Andres Missair
- Department of Anesthesiology, Veterans Affairs Hospital, Miami, Florida, USA .,Department of Anesthesiology, University of Miami, Miami, Florida, USA
| | - Juan Pablo Cata
- Anesthesiology and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Gina Votta-Velis
- Department of Anesthesiology, University of Illinois Hospital and Health Sciences System, Chicago, Illinois, USA
| | - Mark Johnson
- Department of Anesthesiology, Mater Misericordiae University Hospital, Dublin, Ireland
| | - Alain Borgeat
- Department of Anesthesiology, University of Zurich, Balgrist, Switzerland
| | - Mohammed Tiouririne
- Department of Anesthesiology, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Vijay Gottumukkala
- Anesthesiology and Perioperative Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Donal Buggy
- Department of Anesthesiology, Mater Misericordiae University Hospital, Dublin, Ireland
| | - Ricardo Vallejo
- Department of Anesthesiology, Illinois Wesleyan University, Bloomington, Illinois, USA
| | - Esther Benedetti de Marrero
- Department of Anesthesiology, Veterans Affairs Hospital, Miami, Florida, USA.,Department of Anesthesiology, University of Miami, Miami, Florida, USA
| | - Dan Sessler
- Department of Anesthesiology and Pain Management, Cleveland Clinic, Cleveland, Ohio, USA
| | - Marc A Huntoon
- Department of Anesthesiology, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Jose De Andres
- Department of Anesthesiology, General University Hospital, Valencia, Spain
| | - Oscar De Leon Casasola
- Department of Anesthesiology, University of Buffalo / Roswell Park Cancer Institute, Buffalo, New York, USA
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25
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Cata JP, Owusu-Agyemang P, Kapoor R, Lonnqvist PA. Impact of Anesthetics, Analgesics, and Perioperative Blood Transfusion in Pediatric Cancer Patients: A Comprehensive Review of the Literature. Anesth Analg 2019; 129:1653-1665. [PMID: 31743187 DOI: 10.1213/ane.0000000000004314] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cancer is the leading cause of death by disease in developed countries. Children and adolescents with cancer need surgical interventions (ie, biopsy or major surgery) to diagnose, treat, or palliate their malignancies. Surgery is a period of high vulnerability because it stimulates the release of inflammatory mediators, catecholamines, and angiogenesis activators, which coincides with a period of immunosuppression. Thus, during and after surgery, dormant tumors or micrometastasis (ie, minimal residual disease) can grow and become clinically relevant metastasis. Anesthetics (ie, volatile agents, dexmedetomidine, and ketamine) and analgesics (ie, opioids) may also contribute to the growth of minimal residual disease or disease progression. For instance, volatile anesthetics have been implicated in immunosuppression and direct stimulation of cancer cell survival and proliferation. Contrarily, propofol has shown in vitro anticancer effects. In addition, perioperative blood transfusions are not uncommon in children undergoing cancer surgery. In adults, an association between perioperative blood transfusions and cancer progression has been described for some malignancies. Transfusion-related immunomodulation is one of the mechanisms by which blood transfusions can promote cancer progression. Other mechanisms include inflammation and the infusion of growth factors. In the present review, we discuss different aspects of tumorigenesis, metastasis, angiogenesis, the immune system, and the current studies about the impact of anesthetics, analgesics, and perioperative blood transfusions on pediatric cancer progression.
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Affiliation(s)
- Juan P Cata
- From the Department of Anesthesiology and Perioperative Medicine, University of Texas MD Anderson Cancer Center, Houston, Texas
- Anesthesiology and Surgical Oncology Research Group, Houston, Texas
| | - Pascal Owusu-Agyemang
- From the Department of Anesthesiology and Perioperative Medicine, University of Texas MD Anderson Cancer Center, Houston, Texas
- Anesthesiology and Surgical Oncology Research Group, Houston, Texas
| | - Ravish Kapoor
- From the Department of Anesthesiology and Perioperative Medicine, University of Texas MD Anderson Cancer Center, Houston, Texas
- Anesthesiology and Surgical Oncology Research Group, Houston, Texas
| | - Per-Arne Lonnqvist
- Department of Physiology & Pharmacology, Karolinska Institutet, Stockholm, Sweden
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In-vitro effects of the FS50 protein from salivary glands of Xenopsylla cheopis on voltage-gated sodium channel activity and motility of MDA-MB-231 human breast cancer cells. Anticancer Drugs 2019; 29:880-889. [PMID: 29912729 DOI: 10.1097/cad.0000000000000662] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Voltage-gated sodium channel activity enhances the motility and oncogene expression of metastasic cancer cells that express a neonatal alternatively spliced form of the NaV1.5 isoform. We reported previously that FS50, a salivary protein from Xenopsylla cheopis, showed inhibitory activity against the NaV1.5 channel when assayed in HEK 293T cells and antiarrhythmia effects on rats and monkeys after induction of arrhythmia by BaCl2. This study aims to identify the effect of FS50 on voltage-gated sodium channel activity and the motility of MDA-MB-231 human breast cancer cells in vitro. NaV1.5 was abnormally expressed in the highly metastatic breast cancer cell line MDA-MB-231, but not in the MCF-7 cell line. FS50 significantly inhibited sodium current, migration, and invasion in a dose-dependent manner, but had no effect on the proliferation of MDA-MB-231 cells at the working concentrations (1.5-12 μmol/l) after a long-term treatment for 48 h. Meanwhile, FS50 decreased NaV1.5 mRNA expression without altering the total protein level in MDA-MB-231 cells. Correspondingly, the results also showed that MMP-9 activity and the ratio of MMP-9 mRNA to TIMP-1 mRNA were markedly decreased by FS50. Taken together, our findings highlighted for the first time an inhibitory effect of a salivary protein from a blood-feeding arthropod on breast cancer cells through the NaV1.5 channel. Furthermore, this study provided a new candidate leading molecule against antitumor cells expressing NaV1.5.
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Aydar E, Palmer C. Effect of Sigma-1 Receptors on Voltage-Gated Sodium Ion Channels in Colon Cancer Cell Line SW620. Bioelectricity 2019; 1:158-168. [PMID: 34471818 DOI: 10.1089/bioe.2019.0015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background: Voltage-gated sodium channels (VGSCs) play pivotal roles in the metastatic process in several cancers, including breast and colon cancers. Sigma-1 receptors are known to interact and form complexes with a number of ion channels aiding the delivery of the channel protein to the plasma membrane. Drugs that bind the Sigma-1 receptor are hypothesized to affect this process and reduce the delivery of the channel protein to the plasma membrane, in turn reducing the metastatic potential of the cells. Methods: Human colon cancer cell line SW620 was utilized as a model to investigate the interaction between the neonatal VGSC (nNav1.5) and the Sigma-1 receptor. This was accomplished using drugs that bind the Sigma-1 receptor, Sigma-1 receptor silencing, and antibodies that bind and block the nNav1.5 channel. Results: Sigma-1 receptor drugs SKF10047 and dimethyl tryptamine were found to alter (reduce) the adhesion of these cells by 46-54% at a 20 μM drug concentration. In a similar manner, gene silencing of the Sigma-1 receptor had a similar effect in reducing the adhesion of these cells to collagen-coated plates by 30%. The Sigma-1 receptor was found to be in a complex with nNav1.5 in SW620 cells, and Sigma-1 drugs or gene silencing of the Sigma-1 receptor results in a reduction of the surface expression of nNav1.5 by ∼50%. Culture of SW620 cells under hypoxic conditions resulted in upregulation of the Sigma-1 receptor and nNav1.5. In addition, surface expression of nNav1.5 protein increased under hypoxic culture conditions and this was inhibited by the application of SKF10047. Conclusions: It is proposed that in colon cancer cells, upregulated Sigma-1 receptor expression in hypoxia led to increased nNav1.5 protein expression at the plasma membrane and resulted in the cells switching to a more invasive state.
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Affiliation(s)
- Ebru Aydar
- Institute of Ophthalmology, University College London, London, United Kingdom
| | - Christopher Palmer
- School of Health Sciences, London Metropolitan University, London, United Kingdom
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González-González L, González-Ramírez R, Flores A, Avelino-Cruz JE, Felix R, Monjaraz E. Epidermal Growth Factor Potentiates Migration of MDA-MB 231 Breast Cancer Cells by Increasing NaV1.5 Channel Expression. Oncology 2019; 97:373-382. [PMID: 31430760 DOI: 10.1159/000501802] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 06/27/2019] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Breast cancer is one of the leading causes of death worldwide and is the result of dysregulation of various signaling pathways in mammary epithelial cells. The mortality rate in patients suffering from breast cancer is high because the tumor cells have a prominent invasive capacity towards the surrounding tissues. Previous studies carried out in tumor cell models show that voltage-gated ion channels may be important molecular actors that contribute to the migratory and invasive capacity of the tumor cells. METHODS In this study, by using an experimental strategy that combines cell and molecular biology assays with electrophysiological recording, we sought to determine whether the voltage-dependent sodium channel NaV1.5 regulates the migratory capacity of the human breast cancer cell line MDA-MB 231, when cells are maintained in the presence of epidermal growth factor (EGF), as an inductor of the epithelial-mesenchymal transition. RESULTS Our data show that EGF stimulates the migratory capacity of MDA-MB 231 cells, by regulating the functional expression of NaV1.5 channels. Consistent with this, the stimulatory actions of the growth factor were prevented by the use of tetrodotoxin, an Na+ channel selective blocker, as well as by resveratrol, an antioxidant that can also affect Na+ channel activity. DISCUSSION The understanding of molecular mechanisms, such as the EGF pathway in the progression of breast cancer is fundamental for the design of more effective therapeutic strategies for the disease.
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Affiliation(s)
| | - Ricardo González-Ramírez
- Department of Molecular Biology and Histocompatibility, Dr. Manuel Gea González General Hospital, Mexico City, Mexico
| | - Amira Flores
- Institute of Physiology, Meritorious Autonomous University of Puebla (BUAP), Puebla, Mexico
| | - José E Avelino-Cruz
- Institute of Physiology, Meritorious Autonomous University of Puebla (BUAP), Puebla, Mexico
| | - Ricardo Felix
- Department of Cell Biology, Center for Research and Advanced Studies of the National Polytechnic Institute (Cinvestav-IPN), Mexico City, Mexico,
| | - Eduardo Monjaraz
- Institute of Physiology, Meritorious Autonomous University of Puebla (BUAP), Puebla, Mexico
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Tuszynski J, Tilli TM, Levin M. Ion Channel and Neurotransmitter Modulators as Electroceutical Approaches to the Control of Cancer. Curr Pharm Des 2019; 23:4827-4841. [PMID: 28554310 PMCID: PMC6340161 DOI: 10.2174/1381612823666170530105837] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 05/17/2017] [Accepted: 05/23/2017] [Indexed: 11/22/2022]
Abstract
The activities of individual cells must be tightly coordinated in order to build and maintain complex 3-dimensional body structures during embryogenesis and regeneration. Thus, one way to view cancer is within systems biology as a network disorder affecting the ability of cells to properly interact with a morphodynamic field of instructive signals that keeps proliferation and migration orchestrated toward the anatomical needs of the host or-ganism. One layer of this set of instructive microenvironmental cues is bioelectrical. Voltage gradients among all somatic cells (not just excitable nerve and muscle) control cell behavior, and the ionic coupling of cells into networks via electrochemical synapses allows them to implement tissue-level patterning decisions. These gradients have been increasingly impli-cated in the induction and suppression of tumorigenesis and metastasis, in the emerging links between developmental bioelectricity to the cancer problem. Consistent with the well-known role of neurotransmitter molecules in transducing electrical activity to downstream cascades in the brain, serotonergic signaling has likewise been implicated in cancer. Here, we review these recent data and propose new approaches for manipulating bioelectric and neurotransmitter pathways in cancer biology based on a bioelectric view of cancer. To sup-port this methodology, we present new data on the effects of the SSRI Prozac and its analog (ZINC ID = ZINC06811610) on survival of both cancer (MCF7) and normal (MCF10A) breast cells exposed to these compounds. We found an IC50 concentration (25 μM for Pro-zac and 100 μM for the Prozac analog) at which these compounds inhibited tumor cell sur-vival and proliferation. Additionally, at these concentrations, we did not observe alterations in a non-tumoral cell line. This constitutes a proof-of-concept demonstration for our hy-pothesis that the use of both existing and novel drugs as electroceuticals could serve as an alternative to highly toxic chemotherapy strategies replacing or augmenting them with less toxic alternatives. We believe this new approach forms an exciting roadmap for future bio-medical advances.
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Affiliation(s)
- Jack Tuszynski
- Department of Oncology, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta. Canada
| | - Tatiana M Tilli
- Laboratory of Biological System Modeling, National Institute for Science and Technology on Innovation in Neglected Diseases (INCT/IDN), Center for Technological Development in Health (CDTS), Oswaldo Cruz Foundation (Fiocruz), Rio de Janeiro. Brazil
| | - Michael Levin
- Biology Department, and Allen Discovery Center, Tufts University, Medford, MA, 02155. United States
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Anti-metastatic effect of ranolazine in an in vivo rat model of prostate cancer, and expression of voltage-gated sodium channel protein in human prostate. Prostate Cancer Prostatic Dis 2019; 22:569-579. [DOI: 10.1038/s41391-019-0128-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 12/03/2018] [Accepted: 12/26/2018] [Indexed: 12/27/2022]
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Farooqi AA, de la Roche M, Djamgoz MBA, Siddik ZH. Overview of the oncogenic signaling pathways in colorectal cancer: Mechanistic insights. Semin Cancer Biol 2019; 58:65-79. [PMID: 30633978 DOI: 10.1016/j.semcancer.2019.01.001] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 12/29/2018] [Accepted: 01/07/2019] [Indexed: 02/07/2023]
Abstract
Colorectal cancer is a multifaceted disease which is therapeutically challenging. Based on insights gleaned from almost a quarter century of research, it is obvious that deregulation of spatio-temporally controlled signaling pathways play instrumental role in development and progression of colorectal cancer. High-throughput technologies have helped to develop a sharper and broader understanding of the wide ranging signal transduction cascades which also contribute to development of drug resistance, loss of apoptosis and, ultimately, of metastasis. In this review, we have set the spotlight on role of JAK/STAT, TGF/SMAD, Notch, WNT/β-Catenin, SHH/GLI and p53 pathways in the development and progression of colorectal cancer. We have also highlighted recent reports on TRAIL-mediated pathways and molecularly distinct voltage-gated sodium channels in colorectal cancer.
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Affiliation(s)
- Ammad Ahmad Farooqi
- Institute of Biomedical and Genetic Engineering (IBGE), Islamabad, Pakistan.
| | - Marc de la Roche
- Department of Biochemistry, University of Cambridge, 80 Tennis Court Road, Cambridge, CB2 1GA, United Kingdom.
| | - Mustafa B A Djamgoz
- Imperial College London, Department of Life Sciences, Neuroscience Solutions to Cancer Research Group, South Kensington Campus, London, SW7 2AZ, United Kingdom; Cyprus International University, Biotechnology Research Centre, Haspolat, Mersin 10, North Cyprus, Turkey.
| | - Zahid H Siddik
- Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
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33
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New local anesthetics. Best Pract Res Clin Anaesthesiol 2018; 32:179-185. [DOI: 10.1016/j.bpa.2018.06.010] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 06/19/2018] [Indexed: 11/30/2022]
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Gould HJ, Norleans J, Ward TD, Reid C, Paul D. Selective lysis of breast carcinomas by simultaneous stimulation of sodium channels and blockade of sodium pumps. Oncotarget 2018; 9:15606-15615. [PMID: 29643996 PMCID: PMC5884651 DOI: 10.18632/oncotarget.24581] [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: 10/29/2017] [Accepted: 02/21/2018] [Indexed: 01/23/2023] Open
Abstract
Sodium influx through voltage-gated sodium channels (VGSCs) coupled with balanced removal of sodium ions via Na+, K+-ATPase is a major determinant of cellular homeostasis and intracellular ionic concentration. Interestingly, many metastatic carcinomas express high levels of these channels. We hypothesized that if excess VGSCs are activated and Na+, K+-ATPase is simultaneously blocked, the intracellular Na+ concentration should increase, resulting in water movement into the cell, causing swelling and lytic cell death. MDA-MB-231 breast cancer cells over-express VGSCs by 7-fold. To test our hypothesis, we treated these cells in vitro with the Na+, K+-ATPase blocker, ouabain, and then stimulated with a sublethal electric current. For in vivo histologic and survival studies, MDA-MB-231 xenografts were established in Nu/J mice. Mice injected with saline or ouabain were electrically stimulated with trains of 10 msec 10V DC pulses. Within seconds to minutes, the cells swelled and lysed. MCF-10a cells, which express normal VGSCs levels, were unaffected by this treatment. Cells from the weakly-malignant cell line, MCF-7, which express 3-fold greater VGSCs than MCF-10a cells, displayed an intermediate time-to-lysis. The rate of lysis correlated directly with the degree of sodium channel expression and malignancy. We also demonstrated efficacy in cell lines from prostate, colon and lung carcinomas. Treated MDA-MB-231 xenografts showed 60-80% cell death. In survival studies, TOL-treated mice showed significantly slower tumor growth vs. controls. These results are evidence that this "targeted osmotic lysis" represents a novel method for selectively killing cancer cells and warrants further investigation as a potential treatment for advanced and end-stage breast cancer.
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Affiliation(s)
- Harry J Gould
- Department of Neurology, Louisiana State University Health Sciences Center, New Orleans, LA, USA.,Department of Anesthesiology, Louisiana State University Health Sciences Center, New Orleans, LA, USA.,Stanley S. Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, LA, USA.,Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, LA, USA.,Center of Excellence for Oral and Craniofacial Biology, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - Jack Norleans
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - T David Ward
- Department of Cell Biology and Anatomy, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - Chasiti Reid
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - Dennis Paul
- Department of Neurology, Louisiana State University Health Sciences Center, New Orleans, LA, USA.,Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA, USA.,Department of Anesthesiology, Louisiana State University Health Sciences Center, New Orleans, LA, USA.,Stanley S. Scott Cancer Center, Louisiana State University Health Sciences Center, New Orleans, LA, USA.,Neuroscience Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, LA, USA.,Center of Excellence for Oral and Craniofacial Biology, Louisiana State University Health Sciences Center, New Orleans, LA, USA
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Use of genetically encoded, light-gated ion translocators to control tumorigenesis. Oncotarget 2017; 7:19575-88. [PMID: 26988909 PMCID: PMC4991402 DOI: 10.18632/oncotarget.8036] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 02/11/2016] [Indexed: 01/01/2023] Open
Abstract
It has long been known that the resting potential of tumor cells is depolarized relative to their normal counterparts. More recent work has provided evidence that resting potential is not just a readout of cell state: it regulates cell behavior as well. Thus, the ability to control resting potential in vivo would provide a powerful new tool for the study and treatment of tumors, a tool capable of revealing living-state physiological information impossible to obtain using molecular tools applied to isolated cell components. Here we describe the first use of optogenetics to manipulate ion-flux mediated regulation of membrane potential specifically to prevent and cause regression of oncogene-induced tumors. Injection of mutant-KRAS mRNA induces tumor-like structures with many documented similarities to tumors, in Xenopus tadpoles. We show that expression and activation of either ChR2D156A, a blue-light activated cation channel, or Arch, a green-light activated proton pump, both of which hyperpolarize cells, significantly lowers the incidence of KRAS tumor formation. Excitingly, we also demonstrate that activation of co-expressed light-activated ion translocators after tumor formation significantly increases the frequency with which the tumors regress in a process called normalization. These data demonstrate an optogenetic approach to dissect the biophysics of cancer. Moreover, they provide proof-of-principle for a novel class of interventions, directed at regulating cell state by targeting physiological regulators that can over-ride the presence of mutations.
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36
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Lee A, Djamgoz MBA. Triple negative breast cancer: Emerging therapeutic modalities and novel combination therapies. Cancer Treat Rev 2017; 62:110-122. [PMID: 29202431 DOI: 10.1016/j.ctrv.2017.11.003] [Citation(s) in RCA: 231] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 11/01/2017] [Accepted: 11/03/2017] [Indexed: 12/11/2022]
Abstract
Triple negative breast cancer (TNBC) is a complex and aggressive subtype of breast cancer which lacks oestrogen receptors, progesterone receptors and HER2 amplification, thereby making it difficult to target therapeutically. In addition, TNBC has the highest rates of metastatic disease and the poorest overall survival of all breast cancer subtypes. Resultantly, development of targeted therapies for TNBC is urgently needed. Recent efforts aimed at molecular characterisation of TNBCs have revealed various emerging therapeutic targets including PARP1, receptor and non-receptor tyrosine kinases, immune-checkpoints, androgen receptor and epigenetic proteins. Key successes include that of the PARP inhibitor, olaparib, which prolonged progression-free survival in a trial of BRCA-mutated breast cancer and for which clinical approval (in this setting) appears imminent. Nevertheless, the heterogeneity of TNBC has limited the clinical benefits of many trialled therapies in 'unselected' patients. Further, drug resistance develops following use of many targeted monotherapies due to upregulation of compensatory signalling pathways. In this review, we evaluate the current status of investigational targeted treatments and present evidence for the role of novel biomarkers and combination therapies in increasing response rates and circumventing drug-induced resistance. Additionally, we discuss promising novel targets in metastatic TNBC identified through preclinical and/or epidemiological studies.
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Affiliation(s)
- Alice Lee
- Faculty of Medicine, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
| | - Mustafa B A Djamgoz
- Neuroscience Solution to Cancer Research Group, Department of Life Sciences, Faculty of Natural Sciences, Sir Alexander Fleming Building, Imperial College London, South Kensington Campus, London SW7 2AZ, UK.
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Yamaci RF, Fraser SP, Battaloglu E, Kaya H, Erguler K, Foster CS, Djamgoz MB. Neonatal Nav1.5 protein expression in normal adult human tissues and breast cancer. Pathol Res Pract 2017; 213:900-907. [DOI: 10.1016/j.prp.2017.06.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 05/03/2017] [Accepted: 06/04/2017] [Indexed: 01/15/2023]
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38
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Rhana P, Trivelato RR, Beirão PSL, Cruz JS, Rodrigues ALP. Is there a role for voltage-gated Na+ channels in the aggressiveness of breast cancer? ACTA ACUST UNITED AC 2017; 50:e6011. [PMID: 28591378 PMCID: PMC5463531 DOI: 10.1590/1414-431x20176011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 04/11/2017] [Indexed: 12/19/2022]
Abstract
Breast cancer is the most common cancer among women and its metastatic potential is responsible for numerous deaths. Thus, the need to find new targets for improving treatment, and even finding the cure, becomes increasingly greater. Ion channels are known to participate in several physiological functions, such as muscle contraction, cell volume regulation, immune response and cell proliferation. In breast cancer, different types of ion channels have been associated with tumorigenesis. Recently, voltage-gated Na+ channels (VGSC) have been implicated in the processes that lead to increased tumor aggressiveness. To explain this relationship, different theories, associated with pH changes, gene expression and intracellular Ca2+, have been proposed in an attempt to better understand the role of these ion channels in breast cancer. However, these theories are having difficulty being accepted because most of the findings are contrary to the present scientific knowledge. Several studies have shown that VGSC are related to different types of cancer, making them a promising pharmacological target against this debilitating disease. Molecular biology and cell electrophysiology have been used to look for new forms of treatment aiming to reduce aggressiveness and the disease progress.
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Affiliation(s)
- P Rhana
- Laboratório de Câncer de Mama, Canais Iônicos e AMP Cíclico, Faculdade de Ciências Humanas, Sociais e da Saúde, Universidade FUMEC, Belo Horizonte, MG, Brasil.,Laboratório de Membranas Excitáveis e de Biologia Cardiovascular, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - R R Trivelato
- Laboratório de Câncer de Mama, Canais Iônicos e AMP Cíclico, Faculdade de Ciências Humanas, Sociais e da Saúde, Universidade FUMEC, Belo Horizonte, MG, Brasil
| | - P S L Beirão
- Laboratório de Membranas Excitáveis e de Biologia Cardiovascular, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - J S Cruz
- Laboratório de Membranas Excitáveis e de Biologia Cardiovascular, Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - A L P Rodrigues
- Laboratório de Câncer de Mama, Canais Iônicos e AMP Cíclico, Faculdade de Ciências Humanas, Sociais e da Saúde, Universidade FUMEC, Belo Horizonte, MG, Brasil
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Wang J, Ou SW, Bai YF, Wang YJ, Xu ZQD, Luan GM. Multiple Nav1.5 isoforms are functionally expressed in the brain and present distinct expression patterns compared with cardiac Nav1.5. Mol Med Rep 2017; 16:719-729. [PMID: 28560448 PMCID: PMC5482195 DOI: 10.3892/mmr.2017.6654] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 03/08/2017] [Indexed: 02/01/2023] Open
Abstract
It has previously been demonstrated that there are various voltage gated sodium channel (Nav) 1.5 splice variants expressed in brain tissue. A total of nine Nav1.5 isoforms have been identified, however, the potential presence of further Nav1.5 variants expressed in brain neurons remains to be elucidated. The present study systematically investigated the expression of various Nav1.5 splice variants and their associated electrophysiological properties in the rat brain tissue, via biochemical analyses and whole-cell patch clamp recording. The results demonstrated that adult Nav1.5 was expressed in the rat, in addition to the neonatal Nav1.5, Nav1.5a and Nav1.5f isoforms. Further studies indicated that the expression level ratio of neonatal Nav1.5 compared with adult Nav1.5 decreased from 1:1 to 1:3 with age development from postnatal (P) day 0 to 90. This differed from the ratios observed in the developing rat hearts, in which the expression level ratio decreased from 1:4 to 1:19 from P0 to 90. The immunohistochemistry results revealed that Nav1.5 immunoreactivity was predominantly observed in neuronal cell bodies and processes, whereas decreased immunoreactivity was detected in the glial components. Electrophysiological analysis of Nav1.5 in the rat brain slices revealed that an Na current was detected in the presence of 300 nM tetrodotoxin (TTX), however this was inhibited by ~1 µM TTX. The TTX-resistant Na current was activated at −40 mV and reached the maximum amplitude at 0 mV. The results of the present study demonstrated that neonatal and adult Nav1.5 were expressed in the rat brain and electrophysiological analysis further confirmed the functional expression of Nav1.5 in brain neurons.
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Affiliation(s)
- Jun Wang
- Department of Neurosurgery, Beijing Sanbo Brain Hospital of Capital Medical University, Beijing 100093, P.R. China
| | - Shao-Wu Ou
- Department of Neurosurgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yun-Fei Bai
- Department of Neurobiology, Beijing Key Laboratory of Neural Regeneration and Repair, Beijing 100069, P.R. China
| | - Yun-Jie Wang
- Department of Neurosurgery, The First Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zhi-Qing David Xu
- Department of Neurobiology, Beijing Key Laboratory of Neural Regeneration and Repair, Beijing 100069, P.R. China
| | - Guo-Ming Luan
- Department of Neurosurgery, Beijing Sanbo Brain Hospital of Capital Medical University, Beijing 100093, P.R. China
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Das V, Kalyan G, Hazra S, Pal M. Understanding the role of structural integrity and differential expression of integrin profiling to identify potential therapeutic targets in breast cancer. J Cell Physiol 2017; 233:168-185. [DOI: 10.1002/jcp.25821] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 01/23/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Vishal Das
- Biological Sciences and Technology DivisionCSIR‐North East Institute of Science and TechnologyJorhat, AssamIndia
| | - Gazal Kalyan
- Department of BiotechnologyIndian Institute of Technology Roorkee (IITR)RoorkeeUttarakhandIndia
| | - Saugata Hazra
- Department of BiotechnologyIndian Institute of Technology Roorkee (IITR)RoorkeeUttarakhandIndia
- Centre for NanotechnologyIndian Institute of Technology RoorkeeRoorkeeUttarakhandIndia
| | - Mintu Pal
- Biological Sciences and Technology DivisionCSIR‐North East Institute of Science and TechnologyJorhat, AssamIndia
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Föhr KJ, Knippschild U, Herkommer A, Fauler M, Peifer C, Georgieff M, Adolph O. State-dependent block of voltage-gated sodium channels by the casein-kinase 1 inhibitor IC261. Invest New Drugs 2017; 35:277-289. [PMID: 28164251 DOI: 10.1007/s10637-017-0429-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 01/12/2017] [Indexed: 12/13/2022]
Abstract
Background and Purpose IC261 (3-[(2,4,6-trimethoxyphenyl)methylidenyl]-indolin-2-one) has previously been introduced as an isoform specific inhibitor of casein kinase 1 (CK1) causing cell cycle arrest or cell death of established tumor cell lines. However, it is reasonable to assume that not all antitumor activities of IC261 are mediated by the inhibition of CK1. Meanwhile there is growing evidence that functional voltage-gated sodium channels are also implicated in the progression of tumors as their blockage suppresses tumor migration and invasion of different tumor cell lines. Thus, we asked whether IC261 functionally inhibits voltage-gated sodium channels. Experimental Approach Electrophysiological experiments were performed using the patch-clamp technique at human heart muscle sodium channels heterologously expressed in human TsA cells. Key Results IC261 inhibits sodium channels in a state-dependent manner. IC261 does not interact with the open channel and has only a low affinity for the resting state of the hNav1.5 (human voltage-gated sodium channel; Kr: 120 μM). The efficacy of IC261 strongly increases with membrane depolarisation, indicating that the inactivated state is an important target. The results of different experimental approaches finally revealed an affinity of IC261 to the inactivated state between 1 and 2 μM. Conclusion and Implications IC261 inhibits sodium channels at a similar concentration necessary to reduce CK1δ/ε activity by 50% (IC50 value 1 μM). Thus, inhibition of sodium channels might contribute to the antitumor activity of IC261.
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Affiliation(s)
- Karl J Föhr
- Department of Anesthesiology, University Hospital of Ulm, Albert-Einstein-Allee 23, D-89075, Ulm, Germany.
| | - Uwe Knippschild
- Department of General and Visceral Surgery, University Hospital of Ulm, Albert-Einstein-Allee 23, D-89081, Ulm, Germany
| | - Anna Herkommer
- Department of Anesthesiology, University Hospital of Ulm, Albert-Einstein-Allee 23, D-89081, Ulm, Germany
| | - Michael Fauler
- Institute of General Physiology, University of Ulm, Albert-Einstein-Allee 11, D-89081, Ulm, Germany
| | - Christian Peifer
- Institute of Pharmacy, University of Kiel, Gutenbergstr. 76, D-24118, Kiel, Germany
| | - Michael Georgieff
- Department of Anesthesiology, University Hospital of Ulm, Albert-Einstein-Allee 23, D-89075, Ulm, Germany
| | - Oliver Adolph
- Department of Anesthesiology, University Hospital of Ulm, Albert-Einstein-Allee 23, D-89075, Ulm, Germany
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Fernandez-Gallardo M, González-Ramírez R, Sandoval A, Felix R, Monjaraz E. Adenosine Stimulate Proliferation and Migration in Triple Negative Breast Cancer Cells. PLoS One 2016; 11:e0167445. [PMID: 27911956 PMCID: PMC5135100 DOI: 10.1371/journal.pone.0167445] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 11/14/2016] [Indexed: 01/30/2023] Open
Abstract
Emerging evidence suggests that the adenosine (Ado) receptors may play crucial roles in tumor progression. Here, we show that Ado increases proliferation and migration in a triple negative breast cancer model, the MDA-MB 231 cell line. The use of specific agonists and antagonists evidenced that these effects depend on the activation of the A2B receptor, which then triggers an intracellular response mediated by the adenylate cyclase/PKA/cAMP signaling pathway. Ado also increases the expression of NaV1.5 channels, a potential biomarker in breast cancer. Together, these data suggest important roles of the A2B receptors and NaV1.5 channels in the Ado-induced increase in proliferation and migration of the MDA-MB 231 cells.
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Affiliation(s)
- Miriam Fernandez-Gallardo
- Laboratorio de Neuroendocrinología Molecular, Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla (BUAP), Puebla, México
| | - Ricardo González-Ramírez
- Departmento de Biología Molecular e Histocompatibilidad, Hospital General "Dr. Manuel Gea González", Secretaría de Salud, Ciudad de México, México
| | - Alejandro Sandoval
- Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México (UNAM), Tlalnepantla, México
| | - Ricardo Felix
- Departmento de Biología Celular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (Cinvestav-IPN), Ciudad de México, México
| | - Eduardo Monjaraz
- Laboratorio de Neuroendocrinología Molecular, Instituto de Fisiología, Benemérita Universidad Autónoma de Puebla (BUAP), Puebla, México
- * E-mail:
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Amith SR, Vincent KM, Wilkinson JM, Postovit LM, Fliegel L. Defining the Na +/H + exchanger NHE1 interactome in triple-negative breast cancer cells. Cell Signal 2016; 29:69-77. [PMID: 27751915 DOI: 10.1016/j.cellsig.2016.10.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Revised: 10/04/2016] [Accepted: 10/13/2016] [Indexed: 12/30/2022]
Abstract
Mounting evidence supports a major role for the Na+/H+ exchanger NHE1 in cancer progression and metastasis. NHE1 is hyperactive at the onset of oncogenic transformation, resulting in intracellular alkalinization and extracellular microenvironmental acidification. These conditions promote invasion and facilitate metastasis. However, the signal pathways governing the regulation of exchanger activity are still unclear. This is especially important in the aggressively metastatic, triple-negative basal breast cancer subtype. We used affinity chromatography followed by mass spectrometry to identify novel and putative interaction partners of NHE1 in MDA-MB-231 triple-negative breast cancer cells. NHE1 associated with several types of proteins including cytoskeletal proteins and chaperones. We validated protein interactions by co-immunoprecipitation for: 14-3-3, AKT, α-enolase, CHP1, HSP70 and HSP90. Additionally, we used The Cancer Genome Atlas (TCGA) to study NHE1 gene expression in primary patient breast tumours versus adjacent normal tissue. NHE1 expression was elevated in breast tumour samples and, when broken down by breast cancer subtype, NHE1 gene expression was significantly lower in tumours of the basal subtype compared to luminal and HER2+ subtypes. Reverse phase protein array (RPPA) analysis showed that NHE1 expression positively correlated with p90RSK expression in basal, but not luminal, primary tumours. Other proteins were negatively correlated with NHE1 expression in basal breast cancer tumours. Taken together, our data provides the first insight into the signalling molecules that form the NHE1 interactome in triple-negative breast cancer cells. These results will focus our search for novel targeted therapies.
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Affiliation(s)
- Schammim Ray Amith
- Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada.
| | - Krista Marie Vincent
- Department of Oncology, University of Alberta, Edmonton, Alberta T6G 2H7, Canada; Department of Anatomy and Cell Biology, University of Western Ontario, London, Ontario N6A 3K7, Canada.
| | - Jodi Marie Wilkinson
- Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada.
| | - Lynne Marie Postovit
- Department of Oncology, University of Alberta, Edmonton, Alberta T6G 2H7, Canada.
| | - Larry Fliegel
- Department of Biochemistry, University of Alberta, Edmonton, Alberta T6G 2H7, Canada.
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Aydar E, Stratton D, Fraser SP, Djamgoz MBA, Palmer C. Sigma-1 receptors modulate neonatal Na v1.5 ion channels in breast cancer cell lines. EUROPEAN BIOPHYSICS JOURNAL : EBJ 2016; 45:671-683. [PMID: 27160185 DOI: 10.1007/s00249-016-1135-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 04/05/2016] [Accepted: 04/20/2016] [Indexed: 01/07/2023]
Abstract
The main aim of this study was to investigate a possible functional connection between sigma-1 receptors and voltage-gated sodium channels (VGSCs) in human breast cancer cells. The hypothesis was that sigma-1 drugs could alter the metastatic properties of breast cancer cells via the VGSC. Evidence was found for expression of sigma-1 receptor and neonatal Nav1.5 (nNav1.5) expression in both MDA-MB-231 and MDA-MB-468 cells. Sigma-1 drugs (SKF10047 and dimethyltryptamine) did not affect cell proliferation or migration but significantly reduced adhesion to the substrate. Silencing sigma-1 receptor expression by siRNA similarly reduced the adhesion. Blocking nNav1.5 activity with a polyclonal antibody (NESOpAb) targeting an extracellular region of nNav1.5 also reduced the adhesion in both cell lines. Importantly, the results of combined treatments with NESOpAb and a sigma-1 drug or sigma-1 siRNA suggested that both treatments targeted the same mechanism. The possibility was tested, therefore, that the sigma-1 receptor and the nNav1.5 channel formed a physical, functional complex. This suggestion was supported by the results of co-immunoprecipitation experiments. Furthermore, application of sigma-1 drugs to the cells reduced the surface expression of nNav1.5 protein, which could explain how sigma-1 receptor activation could alter the metastatic behaviour of breast cancer cells. Overall, these results are consistent with the idea of a sigma-1 protein behaving like either a "chaperone" or a regulatory subunit associated with nNav1.5.
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Affiliation(s)
- Ebru Aydar
- Institute of Ophthalmology, University College London, 11/43 Bath Street, London, EC1V 9EL, UK
| | - Dan Stratton
- Faculty of Life Sciences, London Metropolitan University, London, N7 8DB, UK
| | - Scott P Fraser
- Neuroscience Solutions to Cancer Research Group, Department of Life Sciences, Imperial College London, Sir Alexander Fleming Building, London, SW7 2AZ, UK
| | - Mustafa B A Djamgoz
- Neuroscience Solutions to Cancer Research Group, Department of Life Sciences, Imperial College London, Sir Alexander Fleming Building, London, SW7 2AZ, UK
- Biotechnology Research Centre (BRC), Cyprus International University, Haspolat, Lefkosa, Cyprus
| | - Christopher Palmer
- Faculty of Life Sciences, London Metropolitan University, London, N7 8DB, UK.
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Xia J, Huang N, Huang H, Sun L, Dong S, Su J, Zhang J, Wang L, Lin L, Shi M, Bin J, Liao Y, Li N, Liao W. Voltage-gated sodium channel Nav 1.7 promotes gastric cancer progression through MACC1-mediated upregulation of NHE1. Int J Cancer 2016; 139:2553-69. [PMID: 27529686 DOI: 10.1002/ijc.30381] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 07/19/2016] [Accepted: 07/26/2016] [Indexed: 12/20/2022]
Abstract
Voltage-gated sodium channels (VGSCs), which are aberrantly expressed in several human cancers, affect cancer cell behavior; however, their role in gastric cancer (GC) and the link between these channels and tumorigenic signaling remain unclear. The aims of this study were to determine the clinicopathological significance and role of the VGSC Nav 1.7 in GC progression and to investigate the associated mechanisms. Here, we report that the SCN9A gene encoding Nav 1.7 was the most abundantly expressed VGSC subtype in GC tissue samples and two GC cell lines (BGC-823 and MKN-28 cells). SCN9A expression levels were also frequently found to be elevated in GC samples compared to nonmalignant tissues by real-time PCR. In the 319 GC specimens evaluated by immunohistochemistry, Nav 1.7 expression was correlated with prognosis, and transporter Na(+) /H(+) exchanger-1 (NHE1) and oncoprotein metastasis-associated in colon cancer-1 (MACC1) expression. Nav 1.7 suppression resulted in reduced voltage-gated sodium currents, decreased NHE1 expression, increased extracellular pH and decreased intracellular pH, and ultimately, reduced invasion and proliferation rates of GC cells and growth of GC xenografts in nude mice. Nav 1.7 inhibition led to reduced MACC1 expression, while MACC1 inhibition resulted in reduced NHE1 expression in vitro and in vivo. Mechanistically, the suppression of Nav 1.7 decreased NF-κB p65 nuclear translocation via p38 activation, thus reducing MACC1 expression. Downregulation of MACC1 decreased c-Jun phosphorylation and subsequently reduced NHE1 expression, whereas the addition of hepatocyte growth factor (HGF), a c-Met physiological ligand, reversed the effect. These results indicate that Nav 1.7 promotes GC progression through MACC1-mediated upregulation of NHE1. Therefore, Nav 1.7 is a potential prognostic marker and/or therapeutic target for GC.
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Affiliation(s)
- Jianling Xia
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Na Huang
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Hongxiang Huang
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Li Sun
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Shaoting Dong
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jinyu Su
- Department of Pathophysiology, Key Lab for Shock and Microcirculation Research, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, China
| | - Jingwen Zhang
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Lin Wang
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Li Lin
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Min Shi
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Jianping Bin
- Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Yulin Liao
- Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Nailin Li
- Karolinska Institute, Department of Medicine-Solna, Clinical Pharmacology Group, Karolinska University Hospital-Solna, Stockholm, 17176, Sweden
| | - Wangjun Liao
- Department of Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
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Inhibitory effects of neferine on Nav1.5 channels expressed in HEK293 cells. ACTA ACUST UNITED AC 2016; 36:487-493. [DOI: 10.1007/s11596-016-1613-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Accepted: 06/01/2016] [Indexed: 01/16/2023]
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Mohammed FH, Khajah MA, Yang M, Brackenbury WJ, Luqmani YA. Blockade of voltage-gated sodium channels inhibits invasion of endocrine-resistant breast cancer cells. Int J Oncol 2015; 48:73-83. [PMID: 26718772 PMCID: PMC4734602 DOI: 10.3892/ijo.2015.3239] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 09/24/2015] [Indexed: 12/18/2022] Open
Abstract
Voltage-gated Na+ channels (VGSCs) are membrane proteins which are normally expressed in excitable cells but have also been detected in cancer cells, where they are thought to be involved in malignancy progression. In this study we examined the ion current and expression profile of VGSC (Nav1.5) in estrogen receptor (ER)-positive (MCF-7) and silenced (pII) breast cancer cells and its possible influence on their proliferation, motility and invasion. VGSC currents were analysed by whole cell patch clamp recording. Nav1.5 expression and localization, in response to EGF stimulation, was examined by western blotting and immunofluorescence respectively. Cell invasion (under-agarose and Matrigel assays), motility (wound healing assay) and proliferation (MTT assay) were assessed in pII cells in response to VGSC blockers, phenytoin (PHT) and tetrodotoxin (TTX), or by siRNA knockdown of Nav1.5. The effect of PHT and TTX on modulating EGF-induced phosphorylation of Akt and ERK1/2 was determined by western blotting. Total matrix metalloproteinase (MMP) was determined using a fluorometric-based activity assay. The level of various human proteases was detected by using proteome profiler array kit. VGSC currents were detected in pII cells, but were absent in MCF-7. Nav1.5 showed cytoplasmic and perinuclear expression in both MCF-7 and pII cells, with enhanced expression upon EGF stimulation. Treatment of pII cells with PHT, TTX or siRNA significantly reduced invasion towards serum components and EGF, in part through reduction of P-ERK1/2 and proteases such as cathepsin E, kallikrein-10 and MMP-7, as well as total MMP activity. At high concentrations, PHT inhibited motility while TTX reduced cell proliferation. Pharmacological or genetic blockade of Nav1.5 may serve as a potential anti-metastatic therapy for breast cancer.
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Affiliation(s)
| | | | - Ming Yang
- Department of Biology, University of York, Heslington, York, YO10 5DD, UK
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Law R, Levin M. Bioelectric memory: modeling resting potential bistability in amphibian embryos and mammalian cells. Theor Biol Med Model 2015; 12:22. [PMID: 26472354 PMCID: PMC4608135 DOI: 10.1186/s12976-015-0019-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 09/27/2015] [Indexed: 12/20/2022] Open
Abstract
Background Bioelectric gradients among all cells, not just within excitable nerve and muscle, play instructive roles in developmental and regenerative pattern formation. Plasma membrane resting potential gradients regulate cell behaviors by regulating downstream transcriptional and epigenetic events. Unlike neurons, which fire rapidly and typically return to the same polarized state, developmental bioelectric signaling involves many cell types stably maintaining various levels of resting potential during morphogenetic events. It is important to begin to quantitatively model the stability of bioelectric states in cells, to understand computation and pattern maintenance during regeneration and remodeling. Method To facilitate the analysis of endogenous bioelectric signaling and the exploitation of voltage-based cellular controls in synthetic bioengineering applications, we sought to understand the conditions under which somatic cells can stably maintain distinct resting potential values (a type of state memory). Using the Channelpedia ion channel database, we generated an array of amphibian oocyte and mammalian membrane models for voltage evolution. These models were analyzed and searched, by simulation, for a simple dynamical property, multistability, which forms a type of voltage memory. Results We find that typical mammalian models and amphibian oocyte models exhibit bistability when expressing different ion channel subsets, with either persistent sodium or inward-rectifying potassium, respectively, playing a facilitative role in bistable memory formation. We illustrate this difference using fast sodium channel dynamics for which a comprehensive theory exists, where the same model exhibits bistability under mammalian conditions but not amphibian conditions. In amphibians, potassium channels from the Kv1.x and Kv2.x families tend to disrupt this bistable memory formation. We also identify some common principles under which physiological memory emerges, which suggest specific strategies for implementing memories in bioengineering contexts. Conclusion Our results reveal conditions under which cells can stably maintain one of several resting voltage potential values. These models suggest testable predictions for experiments in developmental bioelectricity, and illustrate how cells can be used as versatile physiological memory elements in synthetic biology, and unconventional computation contexts. Electronic supplementary material The online version of this article (doi:10.1186/s12976-015-0019-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Robert Law
- Department of Neuroscience, Brown University, Box G, Providence, RI, 02912, USA.
| | - Michael Levin
- Department of Biology and Tufts Center for Regenerative and Developmental Biology, Tufts University, 200 Boston Avenue, Medford, MA, 02155, USA.
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Aktas CC, Zeybek ND, Piskin AK. In vitro effects of phenytoin and DAPT on MDA-MB-231 breast cancer cells. Acta Biochim Biophys Sin (Shanghai) 2015. [PMID: 26206582 DOI: 10.1093/abbs/gmv066] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Voltage-gated sodium channel (VGSC) activity enhances cell behaviors related to metastasis, such as motility, invasion, and oncogene expression. Neonatal alternative splice form of Nav1.5 isoform is expressed in metastatic breast cancers. Furthermore, aberrant Notch signaling pathway can induce oncogenesis and may promote the progression of breast cancers. In this study, we aimed to analyze the effect of the nNav1.5 inhibitor phenytoin and Notch signal inhibitor N-[N-(3,5-difluorophenacetyl)-L-alanyl]-S-phenylglycine-t-butyl ester (DAPT) on triple negative breast cancer cell line (MDA-MB-231) via inhibition of nNav1.5 VGSC activity and Notch signaling, respectively. In order to determine the individual and combined effects of these inhibitors, the 4-[3-(4-iyodophenyl)-2-(4-nitrophenyl)-2H-5-tetrazolio]-1,3-benzene disulfonate (WST-1) test, wound healing assay, and zymography were performed to detect the proliferation, lateral motility, and matrix metalloproteinase-9 (MMP9) activity, respectively. The expressions of nNav1.5, Notch4, MMP9, and tissue inhibitor of metalloproteinases-1 (TIMP1) were also detected by quantitative real-time reverse transcriptase-polymerase chain reaction. DAPT caused an antiproliferative effect when the doses were higher than 10 µM, whereas phenytoin showed no inhibitory action either alone or in combination with DAPT on the MDA-MB-231 cells. Furthermore, it was found that the lateral motility was inhibited by both inhibitors; however, this inhibitory effect was partially rescued when they were used in combination. Meanwhile, the results showed that the MMP9 activity and the ratio of MMP9 mRNA to TIMP1 mRNA were only decreased by DAPT. Thus, we conclude that the combined effect of DAPT and phenytoin is not as beneficial as using DAPT alone on MDA-MB-231 breast cancer cells.
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Affiliation(s)
- Canan Cakir Aktas
- Department of Medical Biochemistry, Faculty of Medicine, Hacettepe University, Ankara 06100, Turkey
| | - N Dilara Zeybek
- Department of Histology and Embryology, Faculty of Medicine, Hacettepe University, Ankara 06100, Turkey
| | - A Kevser Piskin
- Department of Medical Biochemistry, Faculty of Medicine, Hacettepe University, Ankara 06100, Turkey
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