1
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Todesca LM, Gerke M, Bulk EE, Bachmann M, Rudersdorf A, Antonuzzo L, Pillozzi S, Düfer M, Szabo I, Schwab A. Targeting K Ca3.1 channels to overcome erlotinib resistance in non-small cell lung cancer cells. Cell Death Discov 2024; 10:2. [PMID: 38177097 PMCID: PMC10767088 DOI: 10.1038/s41420-023-01776-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 12/08/2023] [Accepted: 12/12/2023] [Indexed: 01/06/2024] Open
Abstract
Almost all non-small cell lung cancer (NSCLC) patients initially responding to EGFR tyrosine kinase inhibitors (TKIs) develop acquired resistance. Since KCa3.1 channels, expressed in mitochondria and plasma membrane, regulate similar behavioral traits of NSCLC cells as EGFR, we hypothesized that their blockade contributes to overcoming EGFR-TKI resistance. Meta-analysis of microarray data revealed that KCa3.1 channel expression in erlotinib-resistant NSCLC cells correlates with that of genes of integrin and apoptosis pathways. Using erlotinib-sensitive and -resistant NSCLC cells we monitored the role of mitochondrial KCa3.1 channels in integrin signaling by studying cell-matrix adhesion with single-cell force spectroscopy. Apoptosis was quantified with fluorescence-based assays. The function of mitochondrial KCa3.1 channels in these processes was assessed by measuring the mitochondrial membrane potential and by quantifying ROS production. Functional assays were supplemented by biochemical analyses. We show that KCa3.1 channel inhibition with senicapoc in erlotinib-resistant NSCLC cells increases cell adhesion by increasing β1-integrin expression, that in turn depends on mitochondrial ROS release. Increased adhesion impairs migration of NSCLC cells in a 3D matrix. At the same time, the senicapoc-dependent ROS production induces cytochrome C release and triggers apoptosis of erlotinib-resistant NSCLC cells. Thus, KCa3.1 channel blockade overcomes EGFR-TKI resistance by inhibiting NSCLC motility and inducing apoptosis.
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Affiliation(s)
| | - Matthias Gerke
- Institute of Physiology II, University of Münster, Münster, Germany
| | - Emma Etmar Bulk
- Institute of Physiology II, University of Münster, Münster, Germany
| | | | - Alisa Rudersdorf
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Münster, Germany
| | - Lorenzo Antonuzzo
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Serena Pillozzi
- Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
| | - Martina Düfer
- Institute of Pharmaceutical and Medicinal Chemistry, University of Münster, Münster, Germany
| | - Ildiko Szabo
- Department of Biology, University of Padova, Padua, Italy
| | - Albrecht Schwab
- Institute of Physiology II, University of Münster, Münster, Germany
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2
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Loeck T, Rugi M, Todesca LM, Kalinowska P, Soret B, Neumann I, Schimmelpfennig S, Najder K, Pethő Z, Farfariello V, Prevarskaya N, Schwab A. Correction to: The context‑dependent role of the Na +/Ca 2+‑exchanger (NCX) in pancreatic stellate cell migration. Pflugers Arch 2024; 476:147. [PMID: 37922097 PMCID: PMC10758363 DOI: 10.1007/s00424-023-02874-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2023]
Affiliation(s)
- Thorsten Loeck
- Institute of Physiology II, University of Münster, Robert‑Koch‑Straße 27b, 48149, Münster, Germany
| | - Micol Rugi
- Institute of Physiology II, University of Münster, Robert‑Koch‑Straße 27b, 48149, Münster, Germany
| | - Luca Matteo Todesca
- Institute of Physiology II, University of Münster, Robert‑Koch‑Straße 27b, 48149, Münster, Germany
| | - Paulina Kalinowska
- Institute of Physiology II, University of Münster, Robert‑Koch‑Straße 27b, 48149, Münster, Germany
| | - Benjamin Soret
- Institute of Physiology II, University of Münster, Robert‑Koch‑Straße 27b, 48149, Münster, Germany
- Université de Lille, Inserm, U1003 - PhyCell - Physiologie Cellulaire, F‑59000, Lille, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Ilka Neumann
- Institute of Physiology II, University of Münster, Robert‑Koch‑Straße 27b, 48149, Münster, Germany
| | - Sandra Schimmelpfennig
- Institute of Physiology II, University of Münster, Robert‑Koch‑Straße 27b, 48149, Münster, Germany
| | - Karolina Najder
- Institute of Physiology II, University of Münster, Robert‑Koch‑Straße 27b, 48149, Münster, Germany
| | - Zoltán Pethő
- Institute of Physiology II, University of Münster, Robert‑Koch‑Straße 27b, 48149, Münster, Germany
| | - Valerio Farfariello
- Université de Lille, Inserm, U1003 - PhyCell - Physiologie Cellulaire, F‑59000, Lille, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Natalia Prevarskaya
- Université de Lille, Inserm, U1003 - PhyCell - Physiologie Cellulaire, F‑59000, Lille, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Albrecht Schwab
- Institute of Physiology II, University of Münster, Robert‑Koch‑Straße 27b, 48149, Münster, Germany.
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3
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Loeck T, Rugi M, Todesca LM, Kalinowska P, Soret B, Neumann I, Schimmelpfennig S, Najder K, Pethő Z, Farfariello V, Prevarskaya N, Schwab A. The context-dependent role of the Na +/Ca 2+-exchanger (NCX) in pancreatic stellate cell migration. Pflugers Arch 2023; 475:1225-1240. [PMID: 37566113 PMCID: PMC10499968 DOI: 10.1007/s00424-023-02847-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 06/16/2023] [Accepted: 07/26/2023] [Indexed: 08/12/2023]
Abstract
Pancreatic stellate cells (PSCs) that can co-metastasize with cancer cells shape the tumor microenvironment (TME) in pancreatic ductal adenocarcinoma (PDAC) by producing an excessive amount of extracellular matrix. This leads to a TME characterized by increased tissue pressure, hypoxia, and acidity. Moreover, cells within the tumor secrete growth factors. The stimuli of the TME trigger Ca2+ signaling and cellular Na+ loading. The Na+/Ca2+ exchanger (NCX) connects the cellular Ca2+ and Na+ homeostasis. The NCX is an electrogenic transporter, which shuffles 1 Ca2+ against 3 Na+ ions over the plasma membrane in a forward or reverse mode. Here, we studied how the impact of NCX activity on PSC migration is modulated by cues from the TME. NCX expression was revealed with qPCR and Western blot. [Ca2+]i, [Na+]i, and the cell membrane potential were determined with the fluorescent indicators Fura-2, Asante NaTRIUM Green-2, and DiBAC4(3), respectively. PSC migration was quantified with live-cell imaging. To mimic the TME, PSCs were exposed to hypoxia, pressure, acidic pH (pH 6.6), and PDGF. NCX-dependent signaling was determined with Western blot analyses. PSCs express NCX1.3 and NCX1.9. [Ca2+]i, [Na+]i, and the cell membrane potential are 94.4 nmol/l, 7.4 mmol/l, and - 39.8 mV, respectively. Thus, NCX1 usually operates in the forward (Ca2+ export) mode. NCX1 plays a differential role in translating cues from the TME into an altered migratory behavior. When NCX1 is operating in the forward mode, its inhibition accelerates PSC migration. Thus, NCX1-mediated extrusion of Ca2+ contributes to a slow mode of migration of PSCs.
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Affiliation(s)
- Thorsten Loeck
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Micol Rugi
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Luca Matteo Todesca
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Paulina Kalinowska
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Benjamin Soret
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
- Université de Lille, Inserm, U1003 - PhyCell - Physiologie Cellulaire, F-59000, Lille, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Ilka Neumann
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Sandra Schimmelpfennig
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Karolina Najder
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Zoltán Pethő
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Valerio Farfariello
- Université de Lille, Inserm, U1003 - PhyCell - Physiologie Cellulaire, F-59000, Lille, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Natalia Prevarskaya
- Université de Lille, Inserm, U1003 - PhyCell - Physiologie Cellulaire, F-59000, Lille, France
- Laboratory of Excellence, Ion Channels Science and Therapeutics, Villeneuve d'Ascq, France
| | - Albrecht Schwab
- Institute of Physiology II, University of Münster, Robert-Koch-Straße 27b, 48149, Münster, Germany.
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4
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Thale I, Maskri S, Grey L, Todesca LM, Budde T, Maisuls I, Strassert CA, Koch O, Schwab A, Wünsch B. Imaging of K Ca 3.1 Channels in Tumor Cells with PET and Small-Molecule Fluorescent Probes. ChemMedChem 2023; 18:e202200551. [PMID: 36315933 PMCID: PMC10098740 DOI: 10.1002/cmdc.202200551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 10/31/2022] [Indexed: 01/20/2023]
Abstract
The Ca2+ activated K+ channel KCa 3.1 is overexpressed in several human tumor cell lines, e. g. clear cell renal carcinoma, prostate cancer, non-small cell lung cancer. Highly aggressive cancer cells use this ion channel for key processes of the metastatic cascade such as migration, extravasation and invasion. Therefore, small molecules, which are able to image this KCa 3.1 channel in vitro and in vivo represent valuable diagnostic and prognostic tool compounds. The [18 F]fluoroethyltriazolyl substituted senicapoc was used as positron emission tomography (PET) tracer and showed promising properties for imaging of KCa 3.1 channels in lung adenocarcinoma cells in mice. The novel senicapoc BODIPY conjugates with two F-atoms (9 a) and with a F-atom and a methoxy moiety (9 b) at the B-atom led to the characteristic punctate staining pattern resulting from labeling of single KCa 3.1 channels in A549-3R cells. This punctate pattern was completely removed by preincubation with an excess of senicapoc confirming the high specificity of KCa 3.1 labeling. Due to the methoxy moiety at the B-atom and the additional oxyethylene unit in the spacer, 9 b exhibits higher polarity, which improves solubility and handling without reduction of fluorescence quantum yield. Docking studies using a cryo-electron microscopy (EM) structure of the KCa 3.1 channel confirmed the interaction of 9 a and 9 b with a binding pocket in the channel pore.
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Affiliation(s)
- Insa Thale
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Institut für Pharmazeutische und Medizinische Chemie, Corrensstraße 48, 48149, Münster, Germany
| | - Sarah Maskri
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Institut für Pharmazeutische und Medizinische Chemie, Corrensstraße 48, 48149, Münster, Germany
| | - Lucie Grey
- Westfälische Wilhelms-Universität Münster, Institut für Pharmazeutische und Medizinische Chemie, Corrensstraße 48, 48149, Münster, Germany
| | - Luca Matteo Todesca
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Universitätsklinikum Münster, Institute of Physiology II, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Thomas Budde
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Universitätsklinikum Münster, Institute of Physiology I, Robert-Koch-Straße 27a, 48149, Münster, Germany
| | - Ivan Maisuls
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie CiMIC, SoN, Corrensstraße 28, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, CeNTech, Heisenbergstraße 11, 48149, Münster, Germany
| | - Cristian A Strassert
- Westfälische Wilhelms-Universität Münster, Institut für Anorganische und Analytische Chemie CiMIC, SoN, Corrensstraße 28, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, CeNTech, Heisenbergstraße 11, 48149, Münster, Germany
| | - Oliver Koch
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Institut für Pharmazeutische und Medizinische Chemie, Corrensstraße 48, 48149, Münster, Germany
| | - Albrecht Schwab
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Universitätsklinikum Münster, Institute of Physiology II, Robert-Koch-Straße 27b, 48149, Münster, Germany
| | - Bernhard Wünsch
- Westfälische Wilhelms-Universität Münster, GRK 2515, Chemical biology of ion channels (Chembion), Corrensstraße 48, 48149, Münster, Germany.,Westfälische Wilhelms-Universität Münster, Institut für Pharmazeutische und Medizinische Chemie, Corrensstraße 48, 48149, Münster, Germany
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5
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Bulk E, Todesca LM, Bachmann M, Szabo I, Rieke M, Schwab A. Functional expression of mitochondrial K Ca3.1 channels in non-small cell lung cancer cells. Pflugers Arch 2022; 474:1147-1157. [PMID: 36152073 PMCID: PMC9560933 DOI: 10.1007/s00424-022-02748-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/21/2022] [Accepted: 09/05/2022] [Indexed: 12/01/2022]
Abstract
Lung cancer is one of the leading causes of cancer-related deaths worldwide. The Ca2+-activated K+ channel KCa3.1 contributes to the progression of non-small cell lung cancer (NSCLC). Recently, KCa3.1 channels were found in the inner membrane of mitochondria in different cancer cells. Mitochondria are the main sources for the generation of reactive oxygen species (ROS) that affect the progression of cancer cells. Here, we combined Western blotting, immunofluorescence, and fluorescent live-cell imaging to investigate the expression and function of KCa3.1 channels in the mitochondria of NSCLC cells. Western blotting revealed KCa3.1 expression in mitochondrial lysates from different NSCLC cells. Using immunofluorescence, we demonstrate a co-localization of KCa3.1 channels with mitochondria of NSCLC cells. Measurements of the mitochondrial membrane potential with TMRM reveal a hyperpolarization following the inhibition of KCa3.1 channels with the cell-permeable blocker senicapoc. This is not the case when cells are treated with the cell-impermeable peptidic toxin maurotoxin. The hyperpolarization of the mitochondrial membrane potential is accompanied by an increased generation of ROS in NSCLC cells. Collectively, our results provide firm evidence for the functional expression of KCa3.1 channels in the inner membrane of mitochondria of NSCLC cells.
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Affiliation(s)
- Etmar Bulk
- Institute of Physiology II, University of Münster, 48149, Münster, Germany.
| | | | | | - Ildiko Szabo
- Department of Biology, University of Padova, Padua, Italy
| | - Marius Rieke
- Institute of Physiology II, University of Münster, 48149, Münster, Germany
| | - Albrecht Schwab
- Institute of Physiology II, University of Münster, 48149, Münster, Germany
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6
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Caliandro MF, Schmalbein F, Todesca LM, Mörgelin M, Rezaei M, Meißner J, Siepe I, Grosche J, Schwab A, Eble JA. A redox-dependent thiol-switch and a Ca 2+ binding site within the hinge region hierarchically depend on each other in α7β1 integrin regulation. Free Radic Biol Med 2022; 187:38-49. [PMID: 35605898 DOI: 10.1016/j.freeradbiomed.2022.05.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 05/17/2022] [Indexed: 11/23/2022]
Abstract
Integrin-mediated cell contacts with the extracellular matrix (ECM) are essential for cellular adhesion, force transmission, and migration. Several effectors, such as divalent cations and redox-active compounds, regulate ligand binding activities of integrins and influence their cellular functions. To study the role of the Ca2+ binding site within the hinge region of the integrin α7 subunit, we genetically abrogated it in the α7hiΔCa mutant. This mutant folded correctly, associated with the β1 subunit and was exposed on the cell surface, but showed reduced ligand binding and weaker cell adhesion to laminin-111. Thus, it resembles the α7hiΔSS mutant, in which the redox-regulated pair of cysteines, closeby to the Ca2+ binding site within the hinge, was abrogated. Comparing both mutants in adhesion strength and cell migration revealed that both Ca2+ complexation and redox-regulation within the hinge interdepend on each other. Moreover, protein-chemical analyses of soluble integrin ectodomains containing the same α7 hinge mutations suggest that integrin activation via the subunit α hinge is primed by the formation of the cysteine pair-based crosslinkage. Then, this allows Ca2+ complexation within the hinge, which is another essential step for integrin activation and ligand binding. Thus, the α hinge is an allosteric integrin regulation site, in which both effectors, Ca2+ and redox-active compounds, synergistically and hierarchically induce far-ranging conformational changes, such as the extension of the integrin ectodomain, resulting in integrin activation of ECM ligand binding and altered integrin-mediated cell functions.
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Affiliation(s)
- Michele F Caliandro
- University of Münster, Institute of Physiological Chemistry and Pathobiochemistry, Waldeyerstr. 15, 48149, Münster, Germany
| | - Felix Schmalbein
- University of Münster, Institute of Physiological Chemistry and Pathobiochemistry, Waldeyerstr. 15, 48149, Münster, Germany
| | - Luca Matteo Todesca
- University of Münster, Institute of Physiology II, Robert-Koch-Str. 27b, 48149, Münster, Germany
| | | | - Maryam Rezaei
- University of Münster, Institute of Physiological Chemistry and Pathobiochemistry, Waldeyerstr. 15, 48149, Münster, Germany
| | - Juliane Meißner
- University of Münster, Institute of Physiological Chemistry and Pathobiochemistry, Waldeyerstr. 15, 48149, Münster, Germany
| | - Isabel Siepe
- University of Münster, Institute of Physiological Chemistry and Pathobiochemistry, Waldeyerstr. 15, 48149, Münster, Germany
| | - Julius Grosche
- University of Münster, Institute of Physiological Chemistry and Pathobiochemistry, Waldeyerstr. 15, 48149, Münster, Germany
| | - Albrecht Schwab
- University of Münster, Institute of Physiology II, Robert-Koch-Str. 27b, 48149, Münster, Germany
| | - Johannes A Eble
- University of Münster, Institute of Physiological Chemistry and Pathobiochemistry, Waldeyerstr. 15, 48149, Münster, Germany.
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7
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Chamlali M, Kouba S, Rodat-Despoix L, Todesca LM, Pethö Z, Schwab A, Ouadid-Ahidouch H. Orai3 Calcium Channel Regulates Breast Cancer Cell Migration through Calcium-Dependent and -Independent Mechanisms. Cells 2021; 10:cells10123487. [PMID: 34943998 PMCID: PMC8700618 DOI: 10.3390/cells10123487] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 12/04/2021] [Accepted: 12/08/2021] [Indexed: 12/13/2022] Open
Abstract
Orai3 calcium (Ca2+) channels are implicated in multiple breast cancer processes, such as proliferation and survival as well as resistance to chemotherapy. However, their involvement in the breast cancer cell migration processes remains vague. In the present study, we exploited MDA-MB-231 and MDA-MB-231 BrM2 basal-like estrogen receptor-negative (ER-) cell lines to assess the direct role of Orai3 in cell migration. We showed that Orai3 regulates MDA-MB-231 and MDA-MB-231 BrM2 cell migration in two distinct ways. First, we showed that Orai3 remodels cell adhesive capacities by modulating the intracellular Ca2+ concentration. Orai3 silencing (siOrai3) decreased calpain activity, cell adhesion and migration in a Ca2+-dependent manner. In addition, Orai3 interacts with focal adhesion kinase (FAK) and regulates the actin cytoskeleton, in a Ca2+-independent way. Thus, siOrai3 modulates cell morphology by altering F-actin polymerization via a loss of interaction between Orai3 and FAK. To summarize, we demonstrated that Orai3 regulates cell migration through a Ca2+-dependent modulation of calpain activity and, in a Ca2+-independent manner, the actin cytoskeleton architecture via FAK.
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Affiliation(s)
- Mohamed Chamlali
- Laboratory of Cellular and Molecular Physiology, UR UPJV 4667, University of Picardie Jules Verne, 33 Rue Saint Leu, 80000 Amiens, France; (M.C.); (S.K.); (L.R.-D.)
| | - Sana Kouba
- Laboratory of Cellular and Molecular Physiology, UR UPJV 4667, University of Picardie Jules Verne, 33 Rue Saint Leu, 80000 Amiens, France; (M.C.); (S.K.); (L.R.-D.)
| | - Lise Rodat-Despoix
- Laboratory of Cellular and Molecular Physiology, UR UPJV 4667, University of Picardie Jules Verne, 33 Rue Saint Leu, 80000 Amiens, France; (M.C.); (S.K.); (L.R.-D.)
| | - Luca Matteo Todesca
- Institute of Physiology II, University of Münster, Robert-Koch-Str. 27b, 48149 Münster, Germany; (L.M.T.); (Z.P.); (A.S.)
| | - Zoltán Pethö
- Institute of Physiology II, University of Münster, Robert-Koch-Str. 27b, 48149 Münster, Germany; (L.M.T.); (Z.P.); (A.S.)
| | - Albrecht Schwab
- Institute of Physiology II, University of Münster, Robert-Koch-Str. 27b, 48149 Münster, Germany; (L.M.T.); (Z.P.); (A.S.)
| | - Halima Ouadid-Ahidouch
- Laboratory of Cellular and Molecular Physiology, UR UPJV 4667, University of Picardie Jules Verne, 33 Rue Saint Leu, 80000 Amiens, France; (M.C.); (S.K.); (L.R.-D.)
- Correspondence: ; Tel.: +33-322827646
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8
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Todesca LM, Maskri S, Brömmel K, Thale I, Wünsch B, Koch O, Schwab A. Targeting K ca3.1 Channels in Cancer. Cell Physiol Biochem 2021; 55:131-144. [PMID: 34043300 DOI: 10.33594/000000374] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/26/2021] [Indexed: 11/06/2022] Open
Abstract
The Kca3.1 channels, previously designated as IK1 or SK4 channels and encoded by the KCNN4 gene, are activated by a rise of the intracellular Ca2+ concentration. These K+ channels are widely expressed in many organs and involved in many pathologies. In particular, Kca3.1 channels have been studied intensively in the context of cancer. They are not only a marker and a valid prognostic tool for cancer patients, but have an important share in driving cancer progression. Their function is required for many characteristic features of the aggressive cancer cell behavior such as migration, invasion and metastasis as well as proliferation and therapy resistance. In the context of cancer, another property of Kca3.1 is now emerging. These channels can be a target for novel small molecule-based imaging probes, as it has been validated in case of fluorescently labeled senicapoc-derivatives. The aim of this review is (i) to give an overview on the role of Kca3.1 channels in cancer progression and in shaping the cancer microenvironment, (ii) discuss the potential of using Kca3.1 targeting drugs for cancer imaging, (iii) and highlight the possibility of combining molecular dynamics simulations to image inhibitor binding to Kca3.1 channels in order to provide a deeper understanding of Kca3.1 channel pharmacology. Alltogether, Kca3.1 is an attractive therapeutic target so that senicapoc, originally developed for the treatment of sickle cell anemia, should be repurposed for the treatment of cancer patients.
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Affiliation(s)
- Luca Matteo Todesca
- Institut für Physiologie II, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Sarah Maskri
- Institute for Pharmaceutical and Medicinal Chemistry, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Kathrin Brömmel
- Medizinische Klinik A, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Insa Thale
- Institute for Pharmaceutical and Medicinal Chemistry, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Bernhard Wünsch
- Institute for Pharmaceutical and Medicinal Chemistry, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Oliver Koch
- Institute for Pharmaceutical and Medicinal Chemistry, Westfälische Wilhelms-Universität Münster, Münster, Germany
| | - Albrecht Schwab
- Institut für Physiologie II, Westfälische Wilhelms-Universität Münster, Münster, Germany,
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Pethő Z, Najder K, Carvalho T, McMorrow R, Todesca LM, Rugi M, Bulk E, Chan A, Löwik CWGM, Reshkin SJ, Schwab A. pH-Channeling in Cancer: How pH-Dependence of Cation Channels Shapes Cancer Pathophysiology. Cancers (Basel) 2020; 12:E2484. [PMID: 32887220 PMCID: PMC7565548 DOI: 10.3390/cancers12092484] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/25/2020] [Accepted: 08/26/2020] [Indexed: 12/20/2022] Open
Abstract
Tissue acidosis plays a pivotal role in tumor progression: in particular, interstitial acidosis promotes tumor cell invasion, and is a major contributor to the dysregulation of tumor immunity and tumor stromal cells. The cell membrane and integral membrane proteins commonly act as important sensors and transducers of altered pH. Cell adhesion molecules and cation channels are prominent membrane proteins, the majority of which is regulated by protons. The pathophysiological consequences of proton-sensitive ion channel function in cancer, however, are scarcely considered in the literature. Thus, the main focus of this review is to highlight possible events in tumor progression and tumor immunity where the pH sensitivity of cation channels could be of great importance.
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Affiliation(s)
- Zoltán Pethő
- Institute of Physiology II, University Münster, 48147 Münster, Germany; (K.N.); (L.M.T.); (M.R.); (E.B.); (A.S.)
| | - Karolina Najder
- Institute of Physiology II, University Münster, 48147 Münster, Germany; (K.N.); (L.M.T.); (M.R.); (E.B.); (A.S.)
| | - Tiago Carvalho
- Department of Biosciences, Biotechnologies, and Biopharmaceutics, University of Bari, 90126 Bari, Italy; (T.C.); (S.J.R.)
| | - Roisin McMorrow
- Department of Radiology and Nuclear Medicine, Erasmus Medical Center, 3035 GD Rotterdam, The Netherlands; (R.M.); (C.W.G.M.L.)
| | - Luca Matteo Todesca
- Institute of Physiology II, University Münster, 48147 Münster, Germany; (K.N.); (L.M.T.); (M.R.); (E.B.); (A.S.)
| | - Micol Rugi
- Institute of Physiology II, University Münster, 48147 Münster, Germany; (K.N.); (L.M.T.); (M.R.); (E.B.); (A.S.)
| | - Etmar Bulk
- Institute of Physiology II, University Münster, 48147 Münster, Germany; (K.N.); (L.M.T.); (M.R.); (E.B.); (A.S.)
| | - Alan Chan
- Percuros B.V., 2333 CL Leiden, The Netherlands;
| | - Clemens W. G. M. Löwik
- Department of Radiology and Nuclear Medicine, Erasmus Medical Center, 3035 GD Rotterdam, The Netherlands; (R.M.); (C.W.G.M.L.)
- Department of Oncology CHUV, UNIL and Ludwig Cancer Center, 1011 Lausanne, Switzerland
| | - Stephan J. Reshkin
- Department of Biosciences, Biotechnologies, and Biopharmaceutics, University of Bari, 90126 Bari, Italy; (T.C.); (S.J.R.)
| | - Albrecht Schwab
- Institute of Physiology II, University Münster, 48147 Münster, Germany; (K.N.); (L.M.T.); (M.R.); (E.B.); (A.S.)
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Abstract
Ion channels are a major class of membrane proteins that play central roles in signaling within and among cells, as well as in the coupling of extracellular events with cellular responses. Dysregulated ion channel activity plays a causative role in many diseases including cancer. Here, we will review their role in lung cancer. Lung cancer is one of the most frequently diagnosed cancers, and it causes the highest number of deaths of all cancer types. The overall 5-year survival rate of lung cancer patients is only 19% and decreases to 5% when patients are diagnosed with stage IV. Thus, new therapeutical strategies are urgently needed. The important contribution of ion channels to the progression of various types of cancer has been firmly established so that ion channel-based therapeutic concepts are currently developed. Thus far, the knowledge on ion channel function in lung cancer is still relatively limited. However, the published studies clearly show the impact of ion channel inhibitors on a number of cellular mechanisms underlying lung cancer cell aggressiveness such as proliferation, migration, invasion, cell cycle progression, or adhesion. Additionally, in vivo experiments reveal that ion channel inhibitors diminish tumor growth in mice. Furthermore, some studies give evidence that ion channel inhibitors can have an influence on the resistance or sensitivity of lung cancer cells to common chemotherapeutics such as paclitaxel or cisplatin.
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Affiliation(s)
- Etmar Bulk
- Institute of Physiology II, University of Münster, Münster, Germany.
| | | | - Albrecht Schwab
- Institute of Physiology II, University of Münster, Münster, Germany
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