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Park SJ, Silic MR, Staab PL, Chen J, Zackschewski EL, Zhang G. Evolution of two-pore domain potassium channels and their gene expression in zebrafish embryos. Dev Dyn 2024; 253:722-749. [PMID: 38270285 PMCID: PMC11269526 DOI: 10.1002/dvdy.690] [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: 09/27/2023] [Revised: 12/10/2023] [Accepted: 01/03/2024] [Indexed: 01/26/2024] Open
Abstract
BACKGROUND The two-pore domain potassium (K2P) channels are a major type of potassium channels that maintain the cell membrane potential by conducting passive potassium leak currents independent of voltage change. They play prominent roles in multiple physiological processes, including neuromodulation, perception of pain, breathing and mood control, and response to volatile anesthetics. Mutations in K2P channels have been linked to many human diseases, such as neuronal and cardiovascular disorders and cancers. Significant progress has been made to understand their protein structures, physiological functions, and pharmacological modifiers. However, their expression and function during embryonic development remain largely unknown. RESULTS We employed the zebrafish model and identified 23 k2p genes using BLAST search and gene cloning. We first analyzed vertebrate K2P channel evolution by phylogenetic and syntenic analyses. Our data revealed that the six subtypes of the K2P genes have already evolved in invertebrates long before the emergence of vertebrates. Moreover, the vertebrate K2P gene number increased, most likely due to two whole-genome duplications. Furthermore, we examined zebrafish k2p gene expression during early embryogenesis by in situ hybridization. Each subgroup's genes showed similar but distinct gene expression domains with some exceptions. Most of them were expressed in neural tissues consistent with their known function of neural excitability regulation. However, a few k2p genes were expressed temporarily in specific tissues or organs, suggesting that these K2P channels may be needed for embryonic development. CONCLUSIONS Our phylogenetic and developmental analyses of K2P channels shed light on their evolutionary history and potential roles during embryogenesis related to their physiological functions and human channelopathies.
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Affiliation(s)
- Sung Jun Park
- Department of Comparative Pathobiology, Purdue University, 625 Harrison Street, West Lafayette, Indiana. 47906. USA
| | - Martin R. Silic
- Department of Comparative Pathobiology, Purdue University, 625 Harrison Street, West Lafayette, Indiana. 47906. USA
| | - Peyton L. Staab
- Department of Comparative Pathobiology, Purdue University, 625 Harrison Street, West Lafayette, Indiana. 47906. USA
| | - Jiapei Chen
- Department of Comparative Pathobiology, Purdue University, 625 Harrison Street, West Lafayette, Indiana. 47906. USA
| | - Ethan L. Zackschewski
- Department of Comparative Pathobiology, Purdue University, 625 Harrison Street, West Lafayette, Indiana. 47906. USA
| | - GuangJun Zhang
- Department of Comparative Pathobiology, Purdue University, 625 Harrison Street, West Lafayette, Indiana. 47906. USA
- Purdue University Center for Cancer Research, Purdue University, 625 Harrison Street, West Lafayette, Indiana. 47906. USA
- Purdue Institute for Inflammation, Immunology and Infectious Diseases (PI4D), Purdue University, 625 Harrison Street, West Lafayette, Indiana. 47906. USA
- Purdue Institute for Integrative Neuroscience, Purdue University, 625 Harrison Street, West Lafayette, Indiana. 47906. USA
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2
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Berrell N, Monkman J, Donovan M, Blick T, O'Byrne K, Ladwa R, Tan CW, Kulasinghe A. Spatial resolution of the head and neck cancer tumor microenvironment to identify tumor and stromal features associated with therapy response. Immunol Cell Biol 2024. [PMID: 39048134 DOI: 10.1111/imcb.12811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 05/29/2024] [Accepted: 07/05/2024] [Indexed: 07/27/2024]
Abstract
Head and neck cancer (HNC) is the seventh most common cancer globally, resulting in 440 000 deaths per year. While there have been advancements in chemoradiotherapy and surgery, relapse occurs in more than half of HNCs, and these patients have a median survival of 10 months and a 2-year survival of < 20%. Only a subset of patients displays durable benefits from immunotherapies in metastatic and recurrent HNC, making it critical to understand the tumor microenvironment (TME) underpinning therapy responses in HNC. To recognize biological differences within the TME that may be predictive of immunotherapy response, we applied cutting-edge geospatial whole-transcriptome profiling (NanoString GeoMx Digital Spatial Profiler) and spatial proteomics profiling (Akoya PhenoCycler-Fusion) on a tumor microarray consisting of 25 cores from 12 patients that included 4 immunotherapy-unresponsive (8 cores) and 2 immunotherapy-responsive patients (5 cores), as well as 6 immunotherapy naïve patients (12 cores). Through high-plex, regional-based transcriptomic mapping of the tumor and TME, pathways involved with the complement system and hypoxia were identified to be differentially expressed in patients who went on to experience a poor immunotherapy response. Single-cell, targeted proteomic analysis found that immune cell infiltration of the cancer cell mass and interactions of CD8 T cells with tumor and other immune cells were associated with positive immunotherapy response. The relative abundance of specific tumor phenotypes and their interactions with various immune cells was identified to be different between response groups. This study demonstrates how spatial transcriptomics and proteomics can resolve novel alterations in the TME of HNC that may contribute to therapy sensitivity and resistance.
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Affiliation(s)
- Naomi Berrell
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Wesley Research Institute, Level 8 East Wing, The Wesley Hospital, Auchenflower, QLD, Australia
| | - James Monkman
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - Meg Donovan
- Wesley Research Institute, Level 8 East Wing, The Wesley Hospital, Auchenflower, QLD, Australia
| | - Tony Blick
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
| | - Ken O'Byrne
- Princess Alexandra Hospital, Brisbane, QLD, Australia
| | - Rahul Ladwa
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Princess Alexandra Hospital, Brisbane, QLD, Australia
| | - Chin Wee Tan
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, Melbourne, VIC, Australia
- Department of Medical Biology, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, VIC, Australia
| | - Arutha Kulasinghe
- Frazer Institute, Faculty of Medicine, The University of Queensland, Brisbane, QLD, Australia
- Wesley Research Institute, Level 8 East Wing, The Wesley Hospital, Auchenflower, QLD, Australia
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3
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Ohya S, Kito H, Kajikuri J, Yamaguchi Y, Matsui M. Transcriptional Up-Regulation of FBXW7 by K Ca1.1 K + Channel Inhibition through the Nrf2 Signaling Pathway in Human Prostate Cancer LNCaP Cell Spheroid Model. Int J Mol Sci 2024; 25:6019. [PMID: 38892210 PMCID: PMC11172474 DOI: 10.3390/ijms25116019] [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: 04/13/2024] [Revised: 05/25/2024] [Accepted: 05/29/2024] [Indexed: 06/21/2024] Open
Abstract
The tumor suppressor gene F-box and WD repeat domain-containing (FBXW) 7 reduces cancer stemness properties by promoting the protein degradation of pluripotent stem cell markers. We recently demonstrated the transcriptional repression of FBXW7 by the three-dimensional (3D) spheroid formation of several cancer cells. In the present study, we found that the transcriptional activity of FBXW7 was promoted by the inhibition of the Ca2+-activated K+ channel, KCa1.1, in a 3D spheroid model of human prostate cancer LNCaP cells through the Akt-Nrf2 signaling pathway. The transcriptional activity of FBXW7 was reduced by the siRNA-mediated inhibition of the CCAAT-enhancer-binding protein C/EBP δ (CEBPD) after the transfection of miR223 mimics in the LNCaP spheroid model, suggesting the transcriptional regulation of FBXW7 through the Akt-Nrf2-CEBPD-miR223 transcriptional axis in the LNCaP spheroid model. Furthermore, the KCa1.1 inhibition-induced activation of FBXW7 reduced (1) KCa1.1 activity and protein levels in the plasma membrane and (2) the protein level of the cancer stem cell (CSC) markers, c-Myc, which is a molecule degraded by FBXW7, in the LNCaP spheroid model, indicating that KCa1.1 inhibition-induced FBXW7 activation suppressed CSC conversion in KCa1.1-positive cancer cells.
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Affiliation(s)
- Susumu Ohya
- Department of Pharmacology, Graduate School of Medical Sciences, Nagoya City University, Nagoya 467-8601, Japan; (H.K.); (J.K.); (Y.Y.); (M.M.)
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4
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Bischof H, Maier S, Koprowski P, Kulawiak B, Burgstaller S, Jasińska J, Serafimov K, Zochowska M, Gross D, Schroth W, Matt L, Juarez Lopez DA, Zhang Y, Bonzheim I, Büttner FA, Fend F, Schwab M, Birkenfeld AL, Malli R, Lämmerhofer M, Bednarczyk P, Szewczyk A, Lukowski R. mitoBK Ca is functionally expressed in murine and human breast cancer cells and potentially contributes to metabolic reprogramming. eLife 2024; 12:RP92511. [PMID: 38808578 PMCID: PMC11136494 DOI: 10.7554/elife.92511] [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] [Indexed: 05/30/2024] Open
Abstract
Alterations in the function of K+ channels such as the voltage- and Ca2+-activated K+ channel of large conductance (BKCa) reportedly promote breast cancer (BC) development and progression. Underlying molecular mechanisms remain, however, elusive. Here, we provide electrophysiological evidence for a BKCa splice variant localized to the inner mitochondrial membrane of murine and human BC cells (mitoBKCa). Through a combination of genetic knockdown and knockout along with a cell permeable BKCa channel blocker, we show that mitoBKCa modulates overall cellular and mitochondrial energy production, and mediates the metabolic rewiring referred to as the 'Warburg effect', thereby promoting BC cell proliferation in the presence and absence of oxygen. Additionally, we detect mitoBKCa and BKCa transcripts in low or high abundance, respectively, in clinical BC specimens. Together, our results emphasize, that targeting mitoBKCa could represent a treatment strategy for selected BC patients in future.
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Affiliation(s)
- Helmut Bischof
- Department of Pharmacology, Toxicology and Clinical Pharmacy, Institute of Pharmacy, University of TübingenTübingenGermany
| | - Selina Maier
- Department of Pharmacology, Toxicology and Clinical Pharmacy, Institute of Pharmacy, University of TübingenTübingenGermany
- Dr Margarete Fischer-Bosch Institute of Clinical PharmacologyStuttgartGermany
| | - Piotr Koprowski
- Laboratory of Intracellular Ion Channels, Nencki Institute of Experimental Biology, Polish Academy of SciencesWarsawPoland
| | - Bogusz Kulawiak
- Laboratory of Intracellular Ion Channels, Nencki Institute of Experimental Biology, Polish Academy of SciencesWarsawPoland
| | - Sandra Burgstaller
- Department of Pharmacology, Toxicology and Clinical Pharmacy, Institute of Pharmacy, University of TübingenTübingenGermany
- NMI Natural and Medical Sciences Institute at the University of TübingenReutlingenGermany
- Center for Medical Research, CF Bioimaging, Medical University of GrazGrazAustria
| | - Joanna Jasińska
- Laboratory of Intracellular Ion Channels, Nencki Institute of Experimental Biology, Polish Academy of SciencesWarsawPoland
| | - Kristian Serafimov
- Institute of Pharmaceutical Sciences, Pharmaceutical (Bio-)Analysis, University of TübingenTübingenGermany
| | - Monika Zochowska
- Laboratory of Intracellular Ion Channels, Nencki Institute of Experimental Biology, Polish Academy of SciencesWarsawPoland
| | - Dominic Gross
- Department of Pharmacology, Toxicology and Clinical Pharmacy, Institute of Pharmacy, University of TübingenTübingenGermany
| | - Werner Schroth
- Dr Margarete Fischer-Bosch Institute of Clinical PharmacologyStuttgartGermany
- University of TübingenTübingenGermany
| | - Lucas Matt
- Department of Pharmacology, Toxicology and Clinical Pharmacy, Institute of Pharmacy, University of TübingenTübingenGermany
| | | | - Ying Zhang
- Department of Pharmacology, Toxicology and Clinical Pharmacy, Institute of Pharmacy, University of TübingenTübingenGermany
| | - Irina Bonzheim
- Institute of Pathology and Neuropathology, University Hospital TübingenTübingenGermany
| | - Florian A Büttner
- Dr Margarete Fischer-Bosch Institute of Clinical PharmacologyStuttgartGermany
- University of TübingenTübingenGermany
| | - Falko Fend
- Institute of Pathology and Neuropathology, University Hospital TübingenTübingenGermany
| | - Matthias Schwab
- Dr Margarete Fischer-Bosch Institute of Clinical PharmacologyStuttgartGermany
- iFIT Cluster of Excellence (EXC 2180) “Image-guided and Functionally Instructed Tumor Therapies”, University of TübingenTübingenGermany
- Department of Clinical Pharmacology, Universityhostpital of TübingenTübingenGermany
- Department of Biochemistry and Pharmacy, University of TübingenTübingenGermany
- German Cancer Consortium (DKTK), German Cancer Research Center, Partner Site TübingenTübingenGermany
| | - Andreas L Birkenfeld
- Medical Clinic IV, University Hospital TübingenTübingenGermany
- Institute for Diabetes Research and Metabolic Diseases (IDM) of the Helmholtz Center Munich at the Eberhard Karls University Tübingen, University of TübingenTübingenGermany
- German Center for Diabetes Research (DZD)NeuherbergGermany
| | - Roland Malli
- Center for Medical Research, CF Bioimaging, Medical University of GrazGrazAustria
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of GrazGrazAustria
- BioTechMed GrazGrazAustria
| | - Michael Lämmerhofer
- Institute of Pharmaceutical Sciences, Pharmaceutical (Bio-)Analysis, University of TübingenTübingenGermany
| | - Piotr Bednarczyk
- Department of Physics and Biophysics, Warsaw University of Life Sciences (SGGW)WarsawPoland
| | - Adam Szewczyk
- Laboratory of Intracellular Ion Channels, Nencki Institute of Experimental Biology, Polish Academy of SciencesWarsawPoland
| | - Robert Lukowski
- Department of Pharmacology, Toxicology and Clinical Pharmacy, Institute of Pharmacy, University of TübingenTübingenGermany
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5
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Guergan S, Boeer B, Fugunt R, Helms G, Roehm C, Solomianik A, Neugebauer A, Nuessle D, Schuermann M, Brunecker K, Jurjut O, Boehme KA, Dammeier S, Enderle MD, Bettio S, Gonzalez-Menendez I, Staebler A, Brucker SY, Kraemer B, Wallwiener D, Fend F, Hahn M. Optical Emission Spectroscopy for the Real-Time Identification of Malignant Breast Tissue. Diagnostics (Basel) 2024; 14:338. [PMID: 38337854 PMCID: PMC10855719 DOI: 10.3390/diagnostics14030338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/12/2024] Open
Abstract
Breast conserving resection with free margins is the gold standard treatment for early breast cancer recommended by guidelines worldwide. Therefore, reliable discrimination between normal and malignant tissue at the resection margins is essential. In this study, normal and abnormal tissue samples from breast cancer patients were characterized ex vivo by optical emission spectroscopy (OES) based on ionized atoms and molecules generated during electrosurgical treatment. The aim of the study was to determine spectroscopic features which are typical for healthy and neoplastic breast tissue allowing for future real-time tissue differentiation and margin assessment during breast cancer surgery. A total of 972 spectra generated by electrosurgical sparking on normal and abnormal tissue were used for support vector classifier (SVC) training. Specific spectroscopic features were selected for the classification of tissues in the included breast cancer patients. The average classification accuracy for all patients was 96.9%. Normal and abnormal breast tissue could be differentiated with a mean sensitivity of 94.8%, a specificity of 99.0%, a positive predictive value (PPV) of 99.1% and a negative predictive value (NPV) of 96.1%. For 66.6% patients all classifications reached 100%. Based on this convincing data, a future clinical application of OES-based tissue differentiation in breast cancer surgery seems to be feasible.
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Affiliation(s)
- Selin Guergan
- Department of Women’s Health, Tuebingen University Hospital, 72076 Tübingen, Germany; (B.B.); (R.F.); (G.H.); (C.R.); (A.S.); (S.Y.B.); (B.K.); (D.W.); (M.H.)
| | - Bettina Boeer
- Department of Women’s Health, Tuebingen University Hospital, 72076 Tübingen, Germany; (B.B.); (R.F.); (G.H.); (C.R.); (A.S.); (S.Y.B.); (B.K.); (D.W.); (M.H.)
| | - Regina Fugunt
- Department of Women’s Health, Tuebingen University Hospital, 72076 Tübingen, Germany; (B.B.); (R.F.); (G.H.); (C.R.); (A.S.); (S.Y.B.); (B.K.); (D.W.); (M.H.)
| | - Gisela Helms
- Department of Women’s Health, Tuebingen University Hospital, 72076 Tübingen, Germany; (B.B.); (R.F.); (G.H.); (C.R.); (A.S.); (S.Y.B.); (B.K.); (D.W.); (M.H.)
| | - Carmen Roehm
- Department of Women’s Health, Tuebingen University Hospital, 72076 Tübingen, Germany; (B.B.); (R.F.); (G.H.); (C.R.); (A.S.); (S.Y.B.); (B.K.); (D.W.); (M.H.)
| | - Anna Solomianik
- Department of Women’s Health, Tuebingen University Hospital, 72076 Tübingen, Germany; (B.B.); (R.F.); (G.H.); (C.R.); (A.S.); (S.Y.B.); (B.K.); (D.W.); (M.H.)
| | - Alexander Neugebauer
- Erbe Elektromedizin GmbH, Waldhoernlestr. 17, 72072 Tübingen, Germany; (A.N.); (D.N.); (M.S.); (O.J.); (K.A.B.); (S.D.); (M.D.E.)
| | - Daniela Nuessle
- Erbe Elektromedizin GmbH, Waldhoernlestr. 17, 72072 Tübingen, Germany; (A.N.); (D.N.); (M.S.); (O.J.); (K.A.B.); (S.D.); (M.D.E.)
| | - Mirjam Schuermann
- Erbe Elektromedizin GmbH, Waldhoernlestr. 17, 72072 Tübingen, Germany; (A.N.); (D.N.); (M.S.); (O.J.); (K.A.B.); (S.D.); (M.D.E.)
| | - Kristin Brunecker
- Erbe Elektromedizin GmbH, Waldhoernlestr. 17, 72072 Tübingen, Germany; (A.N.); (D.N.); (M.S.); (O.J.); (K.A.B.); (S.D.); (M.D.E.)
| | - Ovidiu Jurjut
- Erbe Elektromedizin GmbH, Waldhoernlestr. 17, 72072 Tübingen, Germany; (A.N.); (D.N.); (M.S.); (O.J.); (K.A.B.); (S.D.); (M.D.E.)
| | - Karen A. Boehme
- Erbe Elektromedizin GmbH, Waldhoernlestr. 17, 72072 Tübingen, Germany; (A.N.); (D.N.); (M.S.); (O.J.); (K.A.B.); (S.D.); (M.D.E.)
| | - Sascha Dammeier
- Erbe Elektromedizin GmbH, Waldhoernlestr. 17, 72072 Tübingen, Germany; (A.N.); (D.N.); (M.S.); (O.J.); (K.A.B.); (S.D.); (M.D.E.)
| | - Markus D. Enderle
- Erbe Elektromedizin GmbH, Waldhoernlestr. 17, 72072 Tübingen, Germany; (A.N.); (D.N.); (M.S.); (O.J.); (K.A.B.); (S.D.); (M.D.E.)
| | - Sabrina Bettio
- Institute of Pathology and Neuropathology, Tuebingen University Hospital, 72076 Tübingen, Germany; (S.B.); (I.G.-M.); (A.S.); (F.F.)
| | - Irene Gonzalez-Menendez
- Institute of Pathology and Neuropathology, Tuebingen University Hospital, 72076 Tübingen, Germany; (S.B.); (I.G.-M.); (A.S.); (F.F.)
| | - Annette Staebler
- Institute of Pathology and Neuropathology, Tuebingen University Hospital, 72076 Tübingen, Germany; (S.B.); (I.G.-M.); (A.S.); (F.F.)
| | - Sara Y. Brucker
- Department of Women’s Health, Tuebingen University Hospital, 72076 Tübingen, Germany; (B.B.); (R.F.); (G.H.); (C.R.); (A.S.); (S.Y.B.); (B.K.); (D.W.); (M.H.)
| | - Bernhard Kraemer
- Department of Women’s Health, Tuebingen University Hospital, 72076 Tübingen, Germany; (B.B.); (R.F.); (G.H.); (C.R.); (A.S.); (S.Y.B.); (B.K.); (D.W.); (M.H.)
| | - Diethelm Wallwiener
- Department of Women’s Health, Tuebingen University Hospital, 72076 Tübingen, Germany; (B.B.); (R.F.); (G.H.); (C.R.); (A.S.); (S.Y.B.); (B.K.); (D.W.); (M.H.)
| | - Falko Fend
- Institute of Pathology and Neuropathology, Tuebingen University Hospital, 72076 Tübingen, Germany; (S.B.); (I.G.-M.); (A.S.); (F.F.)
| | - Markus Hahn
- Department of Women’s Health, Tuebingen University Hospital, 72076 Tübingen, Germany; (B.B.); (R.F.); (G.H.); (C.R.); (A.S.); (S.Y.B.); (B.K.); (D.W.); (M.H.)
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6
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Ćurčić V, Olszewski M, Maciejewska N, Višnjevac A, Srdić-Rajić T, Dobričić V, García-Sosa AT, Kokanov SB, Araškov JB, Silvestri R, Schüle R, Jung M, Nikolić M, Filipović NR. Quinoline-based thiazolyl-hydrazones target cancer cells through autophagy inhibition. Arch Pharm (Weinheim) 2024; 357:e2300426. [PMID: 37991233 DOI: 10.1002/ardp.202300426] [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: 08/01/2023] [Revised: 10/23/2023] [Accepted: 10/26/2023] [Indexed: 11/23/2023]
Abstract
Heterocyclic pharmacophores such as thiazole and quinoline rings have a significant role in medicinal chemistry. They are considered privileged structures since they constitute several Food and Drug Administration (FDA)-approved drugs for cancer treatment. Herein, we report the synthesis, in silico evaluation of the ADMET profiles, and in vitro investigation of the anticancer activity of a series of novel thiazolyl-hydrazones based on the 8-quinoline (1a-c), 2-quinoline (2a-c), and 8-hydroxy-2-quinolyl moiety (3a-c). The panel of several human cancer cell lines and the nontumorigenic human embryonic kidney cell line HEK-293 were used to evaluate the compound-mediated in vitro anticancer activities, leading to [2-(2-(quinolyl-8-ol-2-ylmethylene)hydrazinyl)]-4-(4-methoxyphenyl)-1,3-thiazole (3c) as the most promising compound. The study revealed that 3c blocks the cell-cycle progression of a human colon cancer cell line (HCT-116) in the S phase and induces DNA double-strand breaks. Also, our findings demonstrate that 3c accumulates in lysosomes, ultimately leading to the cell death of the hepatocellular carcinoma cell line (Hep-G2) and HCT-116 cells, by the mechanism of autophagy inhibition.
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Affiliation(s)
- Vladimir Ćurčić
- Faculty of Chemistry, University of Belgrade, Belgrade, Serbia
| | - Mateusz Olszewski
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | - Natalia Maciejewska
- Department of Pharmaceutical Technology and Biochemistry, Faculty of Chemistry, Gdansk University of Technology, Gdansk, Poland
| | | | - Tatjana Srdić-Rajić
- Department of Experimental Oncology, Institute for Oncology and Radiology of Serbia, Belgrade, Serbia
| | - Vladimir Dobričić
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Belgrade, Belgrade, Serbia
| | | | - Sanja B Kokanov
- Faculty of Chemistry, University of Belgrade, Belgrade, Serbia
| | | | - Romano Silvestri
- Laboratory affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Department of Drug Chemistry and Technologies, Sapienza University of Rome, Rome, Italy
| | - Roland Schüle
- Klinik für Urologie und Zentrale Klinische Forschung, Klinikum der Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
- Deutsches Konsortium für Translationale Krebsforschung, Standort Freiburg, Freiburg, Germany
- CIBSS Centre of Biological Signalling Studies, University of Freiburg, Freiburg, Germany
| | - Manfred Jung
- Deutsches Konsortium für Translationale Krebsforschung, Standort Freiburg, Freiburg, Germany
- CIBSS Centre of Biological Signalling Studies, University of Freiburg, Freiburg, Germany
- Institute of Pharmaceutical Sciences, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany
| | - Milan Nikolić
- Faculty of Chemistry, University of Belgrade, Belgrade, Serbia
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7
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Marakhova II, Yurinskaya VE, Domnina AP. The Role of Intracellular Potassium in Cell Quiescence, Proliferation, and Death. Int J Mol Sci 2024; 25:884. [PMID: 38255956 PMCID: PMC10815214 DOI: 10.3390/ijms25020884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/28/2023] [Accepted: 01/06/2024] [Indexed: 01/24/2024] Open
Abstract
This brief review explores the role of intracellular K+ during the transition of cells from quiescence to proliferation and the induction of apoptosis. We focus on the relationship between intracellular K+ and the growth and proliferation rates of different cells, including transformed cells in culture as well as human quiescent T cells and mesenchymal stem cells, and analyze the concomitant changes in K+ and water content in both proliferating and apoptotic cells. Evidence is discussed indicating that during the initiation of cell proliferation and apoptosis changes in the K+ content in cells occur in parallel with changes in water content and therefore do not lead to significant changes in the intracellular K+ concentration. We conclude that K+, as a dominant intracellular ion, is involved in the regulation of cell volume during the transit from quiescence, and the content of K+ and water in dividing cells is higher than in quiescent or differentiated cells, which can be considered to be a hallmark of cell proliferation and transformation.
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Affiliation(s)
- Irina I. Marakhova
- Department of Intracellular Signalling and Transport, Institute of Cytology of the Russian Academy of Sciences, Tikhoretsky Avenue 4, 194064 Saint-Petersburg, Russia
| | - Valentina E. Yurinskaya
- Department of Molecular Cell Physiology, Institute of Cytology of the Russian Academy of Sciences, Tikhoretsky Avenue 4, 194064 Saint-Petersburg, Russia
| | - Alisa P. Domnina
- Department of Intracellular Signalling and Transport, Institute of Cytology of the Russian Academy of Sciences, Tikhoretsky Avenue 4, 194064 Saint-Petersburg, Russia
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8
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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] [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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Ohya S, Kajikuri J, Kito H, Matsui M. Down-Regulation of CYP3A4 by the K Ca1.1 Inhibition Is Responsible for Overcoming Resistance to Doxorubicin in Cancer Spheroid Models. Int J Mol Sci 2023; 24:15672. [PMID: 37958656 PMCID: PMC10648085 DOI: 10.3390/ijms242115672] [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: 10/10/2023] [Revised: 10/26/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023] Open
Abstract
The large-conductance Ca2+-activated K+ channel, KCa1.1, plays a pivotal role in cancer progression, metastasis, and the acquisition of chemoresistance. Previous studies indicated that the pharmacological inhibition of KCa1.1 overcame resistance to doxorubicin (DOX) by down-regulating multidrug resistance-associated proteins in the three-dimensional spheroid models of human prostate cancer LNCaP, osteosarcoma MG-63, and chondrosarcoma SW-1353 cells. Investigations have recently focused on the critical roles of intratumoral, drug-metabolizing cytochrome P450 enzymes (CYPs) in chemoresistance. In the present study, we examined the involvement of CYPs in the acquisition of DOX resistance and its overcoming by inhibiting KCa1.1 in cancer spheroid models. Among the CYP isoforms involved in DOX metabolism, CYP3A4 was up-regulated by spheroid formation and significantly suppressed by the inhibition of KCa1.1 through the transcriptional repression of CCAAT/enhancer-binding protein, CEBPB, which is a downstream transcription factor of the Nrf2 signaling pathway. DOX resistance was overcome by the siRNA-mediated inhibition of CYP3A4 and treatment with the potent CYP3A4 inhibitor, ketoconazole, in cancer spheroid models. The phosphorylation levels of Akt were significantly reduced by inhibiting KCa1.1 in cancer spheroid models, and KCa1.1-induced down-regulation of CYP3A4 was reversed by the treatment with Akt and Nrf2 activators. Collectively, the present results indicate that the up-regulation of CYP3A4 is responsible for the acquisition of DOX resistance in cancer spheroid models, and the inhibition of KCa1.1 overcame DOX resistance by repressing CYP3A4 transcription mainly through the Akt-Nrf2-CEBPB axis.
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Affiliation(s)
- Susumu Ohya
- Department of Pharmacology, Graduate School of Medical Sciences, Nagoya City University, Nagoya 467-8601, Japan; (J.K.); (H.K.); (M.M.)
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Eskandari N, Gentile S. Potassium channels activity unveils cancer vulnerability. CURRENT TOPICS IN MEMBRANES 2023; 92:1-14. [PMID: 38007264 DOI: 10.1016/bs.ctm.2023.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2023]
Abstract
"No cell could exist without ion channels" (Clay Armstrong; 1999). Since the discovery in the early 1950s, that ions move across biological membranes, the idea that changes of ionic gradients can generate biological signals has fascinated scientists in any fields. Soon later (1960s) it was found that ionic flows were controlled by a class of specific and selective proteins called ion channels. Thus, it became clear that the concerted activities of these proteins can initiate, arrest, and finely tune a variety of biochemical cascades which offered the opportunity to better understand both biology and pathology. Cancer is a disease that is notoriously difficult to treat due its heterogeneous nature which makes it the deadliest disease in the developed world. Recently, emerging evidence has established that potassium channels are critical modulators of several hallmarks of cancer including tumor growth, metastasis, and metabolism. Nevertheless, the role of potassium ion channels in cancer biology and the therapeutic potential offered by targeting these proteins has not been explored thoroughly. This chapter is addressed to both cancer biologists and ion channels scientists and it aims to shine a light on the established and potential roles of potassium ion channels in cancer biology and on the therapeutic benefit of targeting potassium channels with activator molecules.
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Affiliation(s)
- Najmeh Eskandari
- Department of Cell and Molecular Pharmacology & Experimental Therapeutics, Medical University of South Carolina, Charleston, SC, United States
| | - Saverio Gentile
- Department of Cell and Molecular Pharmacology & Experimental Therapeutics, Medical University of South Carolina, Charleston, SC, United States.
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11
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Wawrzkiewicz-Jałowiecka A, Lalik A, Lukasiak A, Richter-Laskowska M, Trybek P, Ejfler M, Opałka M, Wardejn S, Delfino DV. Potassium Channels, Glucose Metabolism and Glycosylation in Cancer Cells. Int J Mol Sci 2023; 24:ijms24097942. [PMID: 37175655 PMCID: PMC10178682 DOI: 10.3390/ijms24097942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
Potassium channels emerge as one of the crucial groups of proteins that shape the biology of cancer cells. Their involvement in processes like cell growth, migration, or electric signaling, seems obvious. However, the relationship between the function of K+ channels, glucose metabolism, and cancer glycome appears much more intriguing. Among the typical hallmarks of cancer, one can mention the switch to aerobic glycolysis as the most favorable mechanism for glucose metabolism and glycome alterations. This review outlines the interconnections between the expression and activity of potassium channels, carbohydrate metabolism, and altered glycosylation in cancer cells, which have not been broadly discussed in the literature hitherto. Moreover, we propose the potential mediators for the described relations (e.g., enzymes, microRNAs) and the novel promising directions (e.g., glycans-orinented drugs) for further research.
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Affiliation(s)
- Agata Wawrzkiewicz-Jałowiecka
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, 44-100 Gliwice, Poland
| | - Anna Lalik
- Department of Systems Biology and Engineering, Silesian University of Technology, 44-100 Gliwice, Poland
- Biotechnology Center, Silesian University of Technology, 44-100 Gliwice, Poland
| | - Agnieszka Lukasiak
- Department of Physics and Biophysics, Institute of Biology, Warsaw University of Life Sciences, 02-776 Warsaw, Poland
| | - Monika Richter-Laskowska
- The Centre for Biomedical Engineering, Łukasiewicz Research Network-Krakow Institute of Technology, 30-418 Krakow, Poland
| | - Paulina Trybek
- Institute of Physics, University of Silesia in Katowice, 41-500 Chorzów, Poland
| | - Maciej Ejfler
- Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, 44-100 Gliwice, Poland
| | - Maciej Opałka
- Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, 44-100 Gliwice, Poland
| | - Sonia Wardejn
- Faculty of Automatic Control, Electronics and Computer Science, Silesian University of Technology, 44-100 Gliwice, Poland
| | - Domenico V Delfino
- Section of Pharmacology, Department of Medicine and Surgery, University of Perugia, 06129 Perugia, Italy
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