1
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Szerlauth A, Madácsy T, Samu GF, Bíró P, Erdélyi M, Varga G, Xu ZP, Maléth J, Szilágyi I. Reduction of intracellular oxidative stress with a copper-incorporated layered double hydroxide. Chem Commun (Camb) 2024; 60:1325-1328. [PMID: 38197520 DOI: 10.1039/d3cc05762c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2024]
Abstract
Biocompatible Cu(II)-doped layered double hydroxide (CMA) nanoparticles were developed to combat reactive oxygen species. The 2-dimensional nanozymes showed both superoxide dismutase- and catalase-like activities in chemical assays, while proving as efficient antioxidants in the reduction of intracellular oxidative stress. The results indicate the great promise of CMA in antioxidant therapies.
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Affiliation(s)
- Adél Szerlauth
- MTA-SZTE Momentum Biocolloids Research Group, Interdisciplinary Excellence Center, University of Szeged, H-6720 Szeged, Hungary.
| | - Tamara Madácsy
- MTA-SZTE Momentum Epithelial Cell Signaling and Secretion Research Group, Interdisciplinary Excellence Center, University of Szeged, H-6720 Szeged, Hungary
| | - Gergely Ferenc Samu
- Department of Molecular and Analytical Chemistry, University of Szeged, H-6720 Szeged, Hungary
| | - Péter Bíró
- Department of Optics and Quantum Electronics, University of Szeged, H-6720 Szeged, Hungary
| | - Miklós Erdélyi
- Department of Optics and Quantum Electronics, University of Szeged, H-6720 Szeged, Hungary
| | - Gábor Varga
- Department of Applied and Environmental Chemistry, University of Szeged, H-6720 Szeged, Hungary
| | - Zhi Ping Xu
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, QLD-4072 Brisbane, Australia
| | - József Maléth
- MTA-SZTE Momentum Epithelial Cell Signaling and Secretion Research Group, Interdisciplinary Excellence Center, University of Szeged, H-6720 Szeged, Hungary
| | - István Szilágyi
- MTA-SZTE Momentum Biocolloids Research Group, Interdisciplinary Excellence Center, University of Szeged, H-6720 Szeged, Hungary.
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2
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Varga Á, Madácsy T, Görög M, Kiss A, Susánszki P, Szabó V, Jójárt B, Dudás K, Farkas G, Szederkényi E, Lázár G, Farkas A, Ayaydin F, Pallagi P, Maléth J. Human pancreatic ductal organoids with controlled polarity provide a novel ex vivo tool to study epithelial cell physiology. Cell Mol Life Sci 2023; 80:192. [PMID: 37380797 DOI: 10.1007/s00018-023-04836-2] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 05/31/2023] [Accepted: 06/04/2023] [Indexed: 06/30/2023]
Abstract
Epithelial ion and fluid secretion determine the physiological functions of a broad range of organs, such as the lung, liver, or pancreas. The molecular mechanism of pancreatic ion secretion is challenging to investigate due to the limited access to functional human ductal epithelia. Patient-derived organoids may overcome these limitations, however direct accessibility of the apical membrane is not solved. In addition, due to the vectorial transport of ions and fluid the intraluminal pressure in the organoids is elevated, which may hinder the study of physiological processes. To overcome these, we developed an advanced culturing method for human pancreatic organoids based on the removal of the extracellular matrix that induced an apical-to-basal polarity switch also leading to reversed localization of proteins with polarized expression. The cells in the apical-out organoids had a cuboidal shape, whereas their resting intracellular Ca2+ concentration was more consistent compared to the cells in the apical-in organoids. Using this advanced model, we demonstrated the expression and function of two novel ion channels, the Ca2+ activated Cl- channel Anoctamin 1 (ANO1) and the epithelial Na+ channel (ENaC), which were not considered in ductal cells yet. Finally, we showed that the available functional assays, such as forskolin-induced swelling, or intracellular Cl- measurement have improved dynamic range when performed with apical-out organoids. Taken together our data suggest that polarity-switched human pancreatic ductal organoids are suitable models to expand our toolset in basic and translational research.
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Affiliation(s)
- Árpád Varga
- Department of Medicine, University of Szeged, Szeged, Hungary
- ELRN-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, Department of Medicine, University of Szeged, Szeged, 6720, Hungary
- HCEMM-USZ Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary
| | - Tamara Madácsy
- Department of Medicine, University of Szeged, Szeged, Hungary
- ELRN-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, Department of Medicine, University of Szeged, Szeged, 6720, Hungary
- HCEMM-USZ Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary
| | - Marietta Görög
- Department of Medicine, University of Szeged, Szeged, Hungary
- ELRN-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, Department of Medicine, University of Szeged, Szeged, 6720, Hungary
| | - Aletta Kiss
- Department of Medicine, University of Szeged, Szeged, Hungary
- ELRN-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, Department of Medicine, University of Szeged, Szeged, 6720, Hungary
| | - Petra Susánszki
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Viktória Szabó
- Department of Medicine, University of Szeged, Szeged, Hungary
- ELRN-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, Department of Medicine, University of Szeged, Szeged, 6720, Hungary
- HCEMM-USZ Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary
| | - Boldizsár Jójárt
- Department of Medicine, University of Szeged, Szeged, Hungary
- ELRN-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, Department of Medicine, University of Szeged, Szeged, 6720, Hungary
- HCEMM-USZ Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary
| | - Krisztina Dudás
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Gyula Farkas
- Department of Surgery, University of Szeged, Szeged, Hungary
| | | | - György Lázár
- Department of Surgery, University of Szeged, Szeged, Hungary
| | - Attila Farkas
- HCEMM-USZ Functional Cell Biology and Immunology Advanced Core Facility, University of Szeged, Szeged, Hungary
| | - Ferhan Ayaydin
- HCEMM-USZ Functional Cell Biology and Immunology Advanced Core Facility, University of Szeged, Szeged, Hungary
| | - Petra Pallagi
- Department of Medicine, University of Szeged, Szeged, Hungary
- ELRN-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, Department of Medicine, University of Szeged, Szeged, 6720, Hungary
- HCEMM-USZ Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary
| | - József Maléth
- Department of Medicine, University of Szeged, Szeged, Hungary.
- ELRN-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, Department of Medicine, University of Szeged, Szeged, 6720, Hungary.
- HCEMM-USZ Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary.
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3
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Szerlauth A, Varga Á, Madácsy T, Sebők D, Bashiri S, Skwarczynski M, Toth I, Maléth J, Szilagyi I. Confinement of Triple-Enzyme-Involved Antioxidant Cascade in Two-Dimensional Nanostructure. ACS Mater Lett 2023; 5:565-573. [PMID: 36776691 PMCID: PMC9906813 DOI: 10.1021/acsmaterialslett.2c00580] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 01/12/2023] [Indexed: 06/18/2023]
Abstract
Application of antioxidant enzymes in medical or industrial processes is limited due to their high sensitivity to environmental conditions. Incorporation of such enzymes in nanostructures provides a promising route to obtain highly efficient and robust biocatalytic system to scavenge reactive oxygen species (ROS). Here, this question was addressed by confinement of superoxide dismutase (SOD), horseradish peroxidase (HRP), and catalase (CAT) enzymes into nanostructures containing polyelectrolyte building blocks (alginate (Alg) and trimethyl chitosan (TMC)) and delaminated layered double hydroxide (dLDH) nanoparticle support. The nanocomposite possessed excellent structural and colloidal stability, while antioxidant tests revealed that the enzymes remained active upon immobilization and the developed composite greatly reduced intracellular oxidative stress in two-dimensional cell cultures. Moreover, it effectively prevented hydrogen peroxide-induced double stranded DNA breaks, which is a common consequence of oxidative stress. The results provide important tools to design complex nanostructures with multienzymatic antioxidant activities for ROS scavenging.
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Affiliation(s)
- Adel Szerlauth
- MTA-SZTE
Lendület Biocolloids Research Group, Interdisciplinary Excellence
Centre, University of Szeged, H-6720 Szeged, Hungary
| | - Árpád Varga
- MTA-SZTE
Lendület Epithelial Cell Signaling and Secretion Research Group,
Interdisciplinary Excellence Centre, University
of Szeged, H-6720 Szeged, Hungary
| | - Tamara Madácsy
- MTA-SZTE
Lendület Epithelial Cell Signaling and Secretion Research Group,
Interdisciplinary Excellence Centre, University
of Szeged, H-6720 Szeged, Hungary
| | - Dániel Sebők
- Department
of Applied and Environmental Chemistry, University of Szeged, H-6720 Szeged, Hungary
| | - Sahra Bashiri
- School
of Chemistry and Molecular Biosciences, University of Queensland, QLD-4072 St. Lucia, Australia
| | - Mariusz Skwarczynski
- School
of Chemistry and Molecular Biosciences, University of Queensland, QLD-4072 St. Lucia, Australia
| | - Istvan Toth
- School
of Chemistry and Molecular Biosciences, University of Queensland, QLD-4072 St. Lucia, Australia
| | - József Maléth
- MTA-SZTE
Lendület Epithelial Cell Signaling and Secretion Research Group,
Interdisciplinary Excellence Centre, University
of Szeged, H-6720 Szeged, Hungary
| | - Istvan Szilagyi
- MTA-SZTE
Lendület Biocolloids Research Group, Interdisciplinary Excellence
Centre, University of Szeged, H-6720 Szeged, Hungary
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4
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Madácsy T, Varga Á, Papp N, Tél B, Pallagi P, Szabó V, Kiss A, Fanczal J, Rakonczay Z, Tiszlavicz L, Rázga Z, Hohwieler M, Kleger A, Gray M, Hegyi P, Maléth J. Impaired regulation of PMCA activity by defective CFTR expression promotes epithelial cell damage in alcoholic pancreatitis and hepatitis. Cell Mol Life Sci 2022; 79:265. [PMID: 35484438 DOI: 10.1007/s00018-022-04287-1] [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: 01/05/2022] [Revised: 03/09/2022] [Accepted: 04/04/2022] [Indexed: 11/28/2022]
Abstract
Alcoholic pancreatitis and hepatitis are frequent, potentially lethal diseases with limited treatment options. Our previous study reported that the expression of CFTR Cl- channel is impaired by ethanol in pancreatic ductal cells leading to more severe alcohol-induced pancreatitis. In addition to determining epithelial ion secretion, CFTR has multiple interactions with other proteins, which may influence intracellular Ca2+ signaling. Thus, we aimed to investigate the impact of ethanol-mediated CFTR damage on intracellular Ca2+ homeostasis in pancreatic ductal epithelial cells and cholangiocytes. Human and mouse pancreas and liver samples and organoids were used to study ion secretion, intracellular signaling, protein expression and interaction. The effect of PMCA4 inhibition was analyzed in a mouse model of alcohol-induced pancreatitis. The decreased CFTR expression impaired PMCA function and resulted in sustained intracellular Ca2+ elevation in ethanol-treated and mouse and human pancreatic organoids. Liver samples derived from alcoholic hepatitis patients and ethanol-treated mouse liver organoids showed decreased CFTR expression and function, and impaired PMCA4 activity. PMCA4 co-localizes and physically interacts with CFTR on the apical membrane of polarized epithelial cells, where CFTR-dependent calmodulin recruitment determines PMCA4 activity. The sustained intracellular Ca2+ elevation in the absence of CFTR inhibited mitochondrial function and was accompanied with increased apoptosis in pancreatic epithelial cells and PMCA4 inhibition increased the severity of alcohol-induced AP in mice. Our results suggest that improving Ca2+ extrusion in epithelial cells may be a potential novel therapeutic approach to protect the exocrine pancreatic function in alcoholic pancreatitis and prevent the development of cholestasis in alcoholic hepatitis.
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Affiliation(s)
- Tamara Madácsy
- Department of Medicine, University of Szeged, Szeged, 6720, Hungary.,HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, 6720, Hungary
| | - Árpád Varga
- Department of Medicine, University of Szeged, Szeged, 6720, Hungary.,HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, 6720, Hungary
| | - Noémi Papp
- Department of Medicine, University of Szeged, Szeged, 6720, Hungary.,HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, 6720, Hungary
| | - Bálint Tél
- Department of Medicine, University of Szeged, Szeged, 6720, Hungary.,HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, 6720, Hungary.,First Department of Pediatrics, Semmelweis University, Budapest, Hungary
| | - Petra Pallagi
- Department of Medicine, University of Szeged, Szeged, 6720, Hungary.,HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, 6720, Hungary
| | - Viktória Szabó
- Department of Medicine, University of Szeged, Szeged, 6720, Hungary.,HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, 6720, Hungary
| | - Aletta Kiss
- Department of Medicine, University of Szeged, Szeged, 6720, Hungary.,HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, 6720, Hungary
| | - Júlia Fanczal
- Department of Medicine, University of Szeged, Szeged, 6720, Hungary.,HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, 6720, Hungary
| | - Zoltan Rakonczay
- Department of Pathophysiology, University of Szeged, Szeged, 6720, Hungary
| | | | - Zsolt Rázga
- Department of Pathology, University of Szeged, Szeged, Hungary
| | - Meike Hohwieler
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Alexander Kleger
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Mike Gray
- Biosciences Institute, Newcastle University, Newcastle upon Tyne, England
| | - Péter Hegyi
- Institute for Translational Medicine, University of Pécs, Pécs, Hungary.,Centre for Translational Medicine and Division for Pancreatic Disorders, Semmelweis University, Budapest, Hungary
| | - József Maléth
- Department of Medicine, University of Szeged, Szeged, 6720, Hungary. .,HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, 6720, Hungary. .,HCEMM-USZ Molecular Gastroenterology Research Group, University of Szeged, Szeged, 6720, Hungary.
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5
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Pallagi P, Görög M, Papp N, Madácsy T, Varga Á, Crul T, Szabó V, Molnár M, Dudás K, Grassalkovich A, Szederkényi E, Lázár G, Venglovecz V, Hegyi P, Maléth J. Bile acid- and ethanol-mediated activation of Orai1 damages pancreatic ductal secretion in acute pancreatitis. J Physiol 2022; 600:1631-1650. [PMID: 35081662 DOI: 10.1113/jp282203] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [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: 08/02/2021] [Accepted: 12/21/2021] [Indexed: 11/08/2022] Open
Abstract
KEY POINTS Sustained intracellular Ca2+ overload in pancreatic acinar and ductal cells is a hallmark of biliary and alcohol-induced acute pancreatitis, which leads to impaired ductal ion and fluid secretion. Orai1 is a plasma membrane Ca2+ channel that mediates extracellular Ca2+ influx upon endoplasmic reticulum Ca2+ depletion. Our results showed that Orai1 is expressed on the luminal plasma membrane of the ductal cells and selective Orai1 inhibition impaired Stim1-dependent extracellular Ca2+ influx evoked by bile acids or ethanol combined with non-oxidative ethanol metabolites. The prevention of sustained extracellular Ca2+ influx protected ductal cell secretory functions in in vitro models and maintained exocrine pancreatic secretion in in vivo AP models. Orai1 inhibition prevents the bile acid-, and alcohol-induced damage of the pancreatic ductal secretion and holds the potential of improving the outcome of acute pancreatitis. ABSTRACT Regardless of its etiology, sustained intracellular Ca2+ overload is a well-known hallmark of acute pancreatitis (AP). Toxic Ca2+ elevation induces pancreatic ductal cell damage characterized by impaired ion- and fluid secretion -essential to wash out the protein-rich fluid secreted by acinar cells while maintaining the alkaline intra-ductal pH under physiological conditions- and mitochondrial dysfunction. While prevention of ductal cell injury decreases the severity of AP, no specific drug target has yet been identified in the ductal cells. Although Orai1 -a store operated Ca2+ influx channel- is known to contribute to sustained Ca2+ overload in acinar cells, details concerning its expression and function in ductal cells are currently lacking. In this study, we demonstrate that functionally active Orai1 channels reside dominantly in the apical plasma membrane of pancreatic ductal cells. Selective CM5480-mediated Orai1 inhibition impairs Stim1-dependent extracellular Ca2+ influx evoked by bile acids or ethanol combined with non-oxidative ethanol metabolites. Furthermore, prevention of sustained extracellular Ca2+ influx protects ductal cell secretory function in vitro and decrease pancreatic ductal cell death. Finally, Orai1-inhibition partially restores and maintains proper exocrine pancreatic secretion in in vivo AP models. In conclusion, our results indicate that Orai1 inhibition prevents AP-related ductal cell function impairment and holds the potential of improving disease outcome. Abstract figure legend This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Petra Pallagi
- HCEMM-SZTE Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary.,Department of Medicine, University of Szeged, Szeged, Hungary.,ELKH-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Marietta Görög
- Department of Medicine, University of Szeged, Szeged, Hungary.,ELKH-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Noémi Papp
- Department of Medicine, University of Szeged, Szeged, Hungary.,ELKH-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Tamara Madácsy
- HCEMM-SZTE Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary.,Department of Medicine, University of Szeged, Szeged, Hungary.,ELKH-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Árpád Varga
- HCEMM-SZTE Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary.,Department of Medicine, University of Szeged, Szeged, Hungary.,ELKH-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Tim Crul
- HCEMM-SZTE Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary.,Department of Medicine, University of Szeged, Szeged, Hungary.,ELKH-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Viktória Szabó
- HCEMM-SZTE Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary.,Department of Medicine, University of Szeged, Szeged, Hungary.,ELKH-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Melinda Molnár
- Department of Medicine, University of Szeged, Szeged, Hungary.,ELKH-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Krisztina Dudás
- Department of Medicine, University of Szeged, Szeged, Hungary.,ELKH-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | | | | | - György Lázár
- Department of Surgery, University of Szeged, Szeged
| | - Viktória Venglovecz
- Department of Pharmacology and Pharmacotherapy, University of Szeged, Szeged, Hungary
| | - Péter Hegyi
- Department of Medicine, University of Szeged, Szeged, Hungary.,Hungary Centre for Translational Medicine, Semmelweis University, Budapest, Hungary.,Institute for Translational Medicine and First Department Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - József Maléth
- HCEMM-SZTE Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary.,Department of Medicine, University of Szeged, Szeged, Hungary.,ELKH-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, Szeged, Hungary
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6
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Balla Z, Kormányos ES, Kui B, Bálint ER, Fűr G, Orján EM, Iványi B, Vécsei L, Fülöp F, Varga G, Harazin A, Tubak V, Deli MA, Papp C, Gácser A, Madácsy T, Venglovecz V, Maléth J, Hegyi P, Kiss L, Rakonczay Z. Kynurenic Acid and Its Analogue SZR-72 Ameliorate the Severity of Experimental Acute Necrotizing Pancreatitis. Front Immunol 2021; 12:702764. [PMID: 34745090 PMCID: PMC8567016 DOI: 10.3389/fimmu.2021.702764] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 09/29/2021] [Indexed: 11/13/2022] Open
Abstract
The pathophysiology of acute pancreatitis (AP) is not well understood, and the disease does not have specific therapy. Tryptophan metabolite L-kynurenic acid (KYNA) and its synthetic analogue SZR-72 are antagonists of the N-methyl-D-aspartate receptor (NMDAR) and have immune modulatory roles in several inflammatory diseases. Our aims were to investigate the effects of KYNA and SZR-72 on experimental AP and to reveal their possible mode of action. AP was induced by intraperitoneal (i.p.) injection of L-ornithine-HCl (LO) in SPRD rats. Animals were pretreated with 75-300 mg/kg KYNA or SZR-72. Control animals were injected with physiological saline instead of LO, KYNA and/or SZR-72. Laboratory and histological parameters, as well as pancreatic and systemic circulation were measured to evaluate AP severity. Pancreatic heat shock protein-72 and IL-1β were measured by western blot and ELISA, respectively. Pancreatic expression of NMDAR1 was investigated by RT-PCR and immunohistochemistry. Viability of isolated pancreatic acinar cells in response to LO, KYNA, SZR-72 and/or NMDA administration was assessed by propidium-iodide assay. The effects of LO and/or SZR-72 on neutrophil granulocyte function was also studied. Almost all investigated laboratory and histological parameters of AP were significantly reduced by administration of 300 mg/kg KYNA or SZR-72, whereas the 150 mg/kg or 75 mg/kg doses were less or not effective, respectively. The decreased pancreatic microcirculation was also improved in the AP groups treated with 300 mg/kg KYNA or SZR-72. Interestingly, pancreatic heat shock protein-72 expression was significantly increased by administration of SZR-72, KYNA and/or LO. mRNA and protein expression of NMDAR1 was detected in pancreatic tissue. LO treatment caused acinar cell toxicity which was reversed by 250 µM KYNA or SZR-72. Treatment of acini with NMDA (25, 250, 2000 µM) did not influence the effects of KYNA or SZR-72. Moreover, SZR-72 reduced LO-induced H2O2 production of neutrophil granulocytes. KYNA and SZR-72 have dose-dependent protective effects on LO-induced AP or acinar toxicity which seem to be independent of pancreatic NMDA receptors. Furthermore, SZR-72 treatment suppressed AP-induced activation of neutrophil granulocytes. This study suggests that administration of KYNA and its derivative could be beneficial in AP.
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Affiliation(s)
- Zsolt Balla
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | | | - Balázs Kui
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Emese Réka Bálint
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - Gabriella Fűr
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - Erik Márk Orján
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - Béla Iványi
- Department of Pathology, University of Szeged, Szeged, Hungary
| | - László Vécsei
- Department of Neurology, Interdisciplinary Excellence Centre, University of Szeged, Szeged, Hungary.,Hungarian Academy of Sciences-University of Szeged Neuroscience Research Group, Hungarian Academy of Sciences - University of Szeged, Szeged, Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical Chemistry, University of Szeged, Szeged, Hungary.,Stereochemistry Research Team, Hungarian Academy of Sciences - University of Szeged, Szeged, Hungary
| | - Gabriella Varga
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - András Harazin
- Institute of Biophysics, Biological Research Centre, Szeged, Hungary
| | | | - Mária A Deli
- Institute of Biophysics, Biological Research Centre, Szeged, Hungary
| | - Csaba Papp
- Department of Microbiology, University of Szeged, Szeged, Hungary.,Hungarian Academy of Sciences-University of Szeged Lendület Mycobiome Research Group, University of Szeged, Szeged, Hungary
| | - Attila Gácser
- Department of Microbiology, University of Szeged, Szeged, Hungary.,Hungarian Academy of Sciences-University of Szeged Lendület Mycobiome Research Group, University of Szeged, Szeged, Hungary
| | - Tamara Madácsy
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Viktória Venglovecz
- Department of Pharmacology and Pharmacotherapy, University of Szeged, Szeged, Hungary
| | - József Maléth
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Péter Hegyi
- Department of Medicine, University of Szeged, Szeged, Hungary.,Hungarian Academy of Sciences-University of Szeged Translational Gastroenterology Research Group, Szeged, Hungary.,Institute for Translational Medicine, University of Pécs, Pécs, Hungary
| | - Lóránd Kiss
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - Zoltán Rakonczay
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
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7
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Déri S, Borbás J, Hartai T, Hategan L, Csányi B, Visnyovszki Á, Madácsy T, Maléth J, Hegedűs Z, Nagy I, Arora R, Labro AJ, Környei L, Varró A, Sepp R, Ördög B. Impaired cytoplasmic domain interactions cause co-assembly defect and loss of function in the p.Glu293Lys KNCJ2 variant isolated from an Andersen-Tawil syndrome patient. Cardiovasc Res 2021; 117:1923-1934. [PMID: 32810216 DOI: 10.1093/cvr/cvaa249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/16/2020] [Accepted: 08/12/2020] [Indexed: 02/07/2023] Open
Abstract
AIMS Subunit interactions at the cytoplasmic domain interface (CD-I) have recently been shown to control gating in inward rectifier potassium channels. Here we report the novel KCNJ2 variant p.Glu293Lys that has been found in a patient with Andersen-Tawil syndrome type 1 (ATS1), causing amino acid substitution at the CD-I of the inward rectifier potassium channel subunit Kir2.1. Neither has the role of Glu293 in gating control been investigated nor has a pathogenic variant been described at this position. This study aimed to assess the involvement of Glu293 in CD-I subunit interactions and to establish the pathogenic role of the p.Glu293Lys variant in ATS1. METHODS AND RESULTS The p.Glu293Lys variant produced no current in homomeric form and showed dominant-negative effect over wild-type (WT) subunits. Immunocytochemical labelling showed the p.Glu293Lys subunits to distribute in the subsarcolemmal space. Salt bridge prediction indicated the presence of an intersubunit salt bridge network at the CD-I of Kir2.1, with the involvement of Glu293. Subunit interactions were studied by the NanoLuc® Binary Technology (NanoBiT) split reporter assay. Reporter constructs carrying NanoBiT tags on the intracellular termini produced no bioluminescent signal above background with the p.Glu293Lys variant in homomeric configuration and significantly reduced signals in cells co-expressing WT and p.Glu293Lys subunits simultaneously. Extracellularly presented reporter tags, however, generated comparable bioluminescent signals with heteromeric WT and p.Glu293Lys subunits and with homomeric WT channels. CONCLUSIONS Loss of function and dominant-negative effect confirm the causative role of p.Glu293Lys in ATS1. Co-assembly of Kir2.1 subunits is impaired in homomeric channels consisting of p.Glu293Lys subunits and is partially rescued in heteromeric complexes of WT and p.Glu293Lys Kir2.1 variants. These data point to an important role of Glu293 in mediating subunit assembly, as well as in gating of Kir2.1 channels.
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Affiliation(s)
- Szilvia Déri
- Department of Pharmacology and Pharmacotherapy, University of Szeged, Dóm tér 12, PO Box 427, Szeged 6720, Hungary
- Department of Pharmacology and Pharmacotherapy, Interdisciplinary Excellence Centre, University of Szeged, Dóm tér 12, 6720 Szeged, Hungary
| | - János Borbás
- 2nd Department of Internal Medicine and Cardiology Centre, University of Szeged, Semmelweis u. 8, 6725 Szeged, Hungary
| | - Teodóra Hartai
- Department of Pharmacology and Pharmacotherapy, University of Szeged, Dóm tér 12, PO Box 427, Szeged 6720, Hungary
| | - Lidia Hategan
- 2nd Department of Internal Medicine and Cardiology Centre, University of Szeged, Semmelweis u. 8, 6725 Szeged, Hungary
| | - Beáta Csányi
- 2nd Department of Internal Medicine and Cardiology Centre, University of Szeged, Semmelweis u. 8, 6725 Szeged, Hungary
| | - Ádám Visnyovszki
- Department of Pharmacology and Pharmacotherapy, University of Szeged, Dóm tér 12, PO Box 427, Szeged 6720, Hungary
| | - Tamara Madácsy
- 1st Department of Internal Medicine, University of Szeged, Korányi fasor 8-10, 6720 Szeged, Hungary, Hungary
| | - József Maléth
- 1st Department of Internal Medicine, University of Szeged, Korányi fasor 8-10, 6720 Szeged, Hungary, Hungary
| | - Zoltán Hegedűs
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences, Temesvári krt. 62, 6726 Szeged, Hungary
- Department of Biochemistry and Medical Chemistry, University of Pécs, Szigeti út 12, 7624 Pécs, Hungary
| | - István Nagy
- Institute of Biochemistry, Biological Research Centre the Hungarian Academy of Sciences, Temesvári krt. 62, 6726 Szeged, Hungary
- Seqomics Biotechnology Ltd, Vállalkozók útja 7, 6782 Mórahalom, Hungary
| | - Rohit Arora
- Department of Veterinary Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Alain J Labro
- Department of Biomedical Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
- Department of Basic Medical Sciences, University of Ghent, C. Heymanslaan 10, 9000 Ghent, Belgium
| | - László Környei
- Gottsegen György National Institute of Cardiology, Haller u. 9, 1096 Budapest, Hungary
| | - András Varró
- Department of Pharmacology and Pharmacotherapy, University of Szeged, Dóm tér 12, PO Box 427, Szeged 6720, Hungary
- Department of Pharmacology and Pharmacotherapy, Interdisciplinary Excellence Centre, University of Szeged, Dóm tér 12, 6720 Szeged, Hungary
- MTA-SZTE Research Group for Cardiovascular Pharmacology, Hungarian Academy of Sciences, Dóm tér 12, 6720 Szeged, Hungary
| | - Róbert Sepp
- 2nd Department of Internal Medicine and Cardiology Centre, University of Szeged, Semmelweis u. 8, 6725 Szeged, Hungary
| | - Balázs Ördög
- Department of Pharmacology and Pharmacotherapy, University of Szeged, Dóm tér 12, PO Box 427, Szeged 6720, Hungary
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8
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Breunig M, Merkle J, Wagner M, Melzer MK, Barth TFE, Engleitner T, Krumm J, Wiedenmann S, Cohrs CM, Perkhofer L, Jain G, Krüger J, Hermann PC, Schmid M, Madácsy T, Varga Á, Griger J, Azoitei N, Müller M, Wessely O, Robey PG, Heller S, Dantes Z, Reichert M, Günes C, Bolenz C, Kuhn F, Maléth J, Speier S, Liebau S, Sipos B, Kuster B, Seufferlein T, Rad R, Meier M, Hohwieler M, Kleger A. Modeling plasticity and dysplasia of pancreatic ductal organoids derived from human pluripotent stem cells. Cell Stem Cell 2021; 28:1105-1124.e19. [PMID: 33915078 DOI: 10.1016/j.stem.2021.03.005] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 12/22/2020] [Accepted: 03/09/2021] [Indexed: 12/14/2022]
Abstract
Personalized in vitro models for dysplasia and carcinogenesis in the pancreas have been constrained by insufficient differentiation of human pluripotent stem cells (hPSCs) into the exocrine pancreatic lineage. Here, we differentiate hPSCs into pancreatic duct-like organoids (PDLOs) with morphological, transcriptional, proteomic, and functional characteristics of human pancreatic ducts, further maturing upon transplantation into mice. PDLOs are generated from hPSCs inducibly expressing oncogenic GNAS, KRAS, or KRAS with genetic covariance of lost CDKN2A and from induced hPSCs derived from a McCune-Albright patient. Each oncogene causes a specific growth, structural, and molecular phenotype in vitro. While transplanted PDLOs with oncogenic KRAS alone form heterogenous dysplastic lesions or cancer, KRAS with CDKN2A loss develop dedifferentiated pancreatic ductal adenocarcinomas. In contrast, transplanted PDLOs with mutant GNAS lead to intraductal papillary mucinous neoplasia-like structures. Conclusively, PDLOs enable in vitro and in vivo studies of pancreatic plasticity, dysplasia, and cancer formation from a genetically defined background.
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Affiliation(s)
- Markus Breunig
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Jessica Merkle
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Martin Wagner
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Michael K Melzer
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany; Department of Urology, Ulm University, Ulm, Germany
| | | | - Thomas Engleitner
- Institute of Molecular Oncology and Functional Genomics, Center for Translational Cancer Research and Department of Medicine II, School of Medicine, Technical University of Munich, Munich, Germany
| | - Johannes Krumm
- Chair of Proteomics and Bioanalytics, Technical University of Munich, Freising, Germany
| | - Sandra Wiedenmann
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany; Helmholtz Pioneer Campus, Helmholtz Zentrum München, Neuherberg, Germany
| | - Christian M Cohrs
- Paul Langerhans Institute Dresden (PLID) of the Helmholtz Zentrum München at the University Clinic Carl Gustav Carus of Technische Universität Dresden, Helmholtz Zentrum München, Neuherberg, Germany; Institute of Physiology, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany; German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Lukas Perkhofer
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Gaurav Jain
- Institute of Molecular Oncology and Functional Genomics, Center for Translational Cancer Research and Department of Medicine II, School of Medicine, Technical University of Munich, Munich, Germany
| | - Jana Krüger
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Patrick C Hermann
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Maximilian Schmid
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Tamara Madácsy
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary; MTA-SZTE Momentum Epithelial Cell Signalling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Árpád Varga
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary; MTA-SZTE Momentum Epithelial Cell Signalling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Joscha Griger
- Institute of Molecular Oncology and Functional Genomics, Center for Translational Cancer Research and Department of Medicine II, School of Medicine, Technical University of Munich, Munich, Germany
| | - Ninel Azoitei
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Martin Müller
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Oliver Wessely
- Department of Cardiovascular & Metabolic Sciences, Lerner Research Institute, Cleveland, OH 44195, USA
| | - Pamela G Robey
- Skeletal Biology Section, National Institute of Dental and Craniofacial Research, National Institutes of Health, US Department of Health and Human Services, Bethesda, MD 20892, USA
| | - Sandra Heller
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Zahra Dantes
- Medical Clinic and Polyclinic II, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | - Maximilian Reichert
- Medical Clinic and Polyclinic II, Klinikum rechts der Isar, Technical University Munich, Munich, Germany
| | | | | | - Florian Kuhn
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - József Maléth
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary; MTA-SZTE Momentum Epithelial Cell Signalling and Secretion Research Group, University of Szeged, Szeged, Hungary; HCEMM-SZTE Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary
| | - Stephan Speier
- Paul Langerhans Institute Dresden (PLID) of the Helmholtz Zentrum München at the University Clinic Carl Gustav Carus of Technische Universität Dresden, Helmholtz Zentrum München, Neuherberg, Germany; Institute of Physiology, Faculty of Medicine, Technische Universität Dresden, Dresden, Germany; German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Stefan Liebau
- Institute of Neuroanatomy & Developmental Biology (INDB), Eberhard Karls University Tübingen, Tübingen, Germany
| | - Bence Sipos
- Department of Internal Medicine VIII, University Hospital Tübingen, Tübingen, Germany
| | - Bernhard Kuster
- Chair of Proteomics and Bioanalytics, Technical University of Munich, Freising, Germany; Bavarian Biomolecular Mass Spectrometry Center (BayBioMS), Technical University of Munich, Freising, Germany
| | - Thomas Seufferlein
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Roland Rad
- Institute of Molecular Oncology and Functional Genomics, Center for Translational Cancer Research and Department of Medicine II, School of Medicine, Technical University of Munich, Munich, Germany
| | - Matthias Meier
- Helmholtz Pioneer Campus, Helmholtz Zentrum München, Neuherberg, Germany
| | - Meike Hohwieler
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany
| | - Alexander Kleger
- Department of Internal Medicine I, Ulm University Hospital, Ulm, Germany.
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9
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Judit Szántó K, Madácsy T, Kata D, Ferenci T, Rutka M, Bálint A, Bor R, Fábián A, Milassin Á, Jójárt B, Szepes Z, Nagy F, Molnár T, Földesi I, Maléth J, Farkas K. Advances in the optimization of therapeutic drug monitoring using serum, tissue and faecal anti-tumour necrosis factor concentration in patients with inflammatory bowel disease treated with TNF-α antagonists. Expert Opin Biol Ther 2021; 21:539-548. [PMID: 33583295 DOI: 10.1080/14712598.2021.1890712] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
INTRODUCTION The relationship between clinical outcomes and serum anti-TNF levels is controversial. The aim of this study was to perform simultaneous analyses of serum, mucosal, and fecal anti-TNF-α levels. METHODS Consecutive IBD patients who received maintenance anti-TNF-α therapy were enrolled. The number of TNF-α positive cells in the mucosa was detected using immunofluorescent labeling on biopsy samples. Serum, mucosal and fecal anti-TNF-α, serum anti-drug antibody, and fecal calprotectin levels were determined using ELISA. Each patient underwent body composition analysis as well. RESULTS Data of 50 patients were analyzed. The number TNF-α positive cells was significantly higher in the inflamed part of the colon than in the un-inflamed part of the colon. Tissue and fecal drug levels did not show any association with serum drug levels; moreover, serum anti-TNF concentration did not correlate with endoscopic activity. Mucosal anti-TNF levels were higher only in IFX-treated patients in remission and IFX-treated patients with detectable fecal anti-TNF had lower tissue drug levels. Presence of the drug in the feces was significantly different according to disease activity. CONCLUSION Fecal drug concentration is suggested to be a better predictor of endoscopic activity and loss of response, and fecal drug monitoring may improve the estimation accuracy of tissue drug levels.
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Affiliation(s)
| | - Tamara Madácsy
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Diána Kata
- Department of Laboratory Medicine, University of Szeged, Szeged, Hungary
| | - Tamás Ferenci
- Physiological Controls Research Center, John von Neumann Faculty of Informatics, Institute of Biomatics, Óbuda University, Budapest, Hungary
| | - Mariann Rutka
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Anita Bálint
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Renáta Bor
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Anna Fábián
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Ágnes Milassin
- Department of Medicine, University of Szeged, Szeged, Hungary
| | | | - Zoltán Szepes
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Ferenc Nagy
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Tamás Molnár
- Department of Medicine, University of Szeged, Szeged, Hungary
| | - Imre Földesi
- Department of Laboratory Medicine, University of Szeged, Szeged, Hungary
| | - József Maléth
- Department of Medicine, University of Szeged, Szeged, Hungary.,HCEMM-SZTE Molecular Gastroenterology Research Group, University of Szeged, Szeged, Hungary.,HAS-USZ Momentum Epithelial Cell Signalling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Klaudia Farkas
- Department of Medicine, University of Szeged, Szeged, Hungary
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10
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Pallagi P, Madácsy T, Varga Á, Maléth J. Intracellular Ca 2+ Signalling in the Pathogenesis of Acute Pancreatitis: Recent Advances and Translational Perspectives. Int J Mol Sci 2020; 21:ijms21114005. [PMID: 32503336 PMCID: PMC7312053 DOI: 10.3390/ijms21114005] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [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: 05/05/2020] [Revised: 05/26/2020] [Accepted: 06/01/2020] [Indexed: 12/12/2022] Open
Abstract
Intracellular Ca2+ signalling is a major signal transductional pathway in non-excitable cells, responsible for the regulation of a variety of physiological functions. In the secretory epithelial cells of the exocrine pancreas, such as acinar and ductal cells, intracellular Ca2+ elevation regulates digestive enzyme secretion in acini or fluid and ion secretion in ductal cells. Although Ca2+ is a uniquely versatile orchestrator of epithelial physiology, unregulated global elevation of the intracellular Ca2+ concentration is an early trigger for the development of acute pancreatitis (AP). Regardless of the aetiology, different forms of AP all exhibit sustained intracellular Ca2+ elevation as a common hallmark. The release of endoplasmic reticulum (ER) Ca2+ stores by toxins (such as bile acids or fatty acid ethyl esters (FAEEs)) or increased intrapancreatic pressure activates the influx of extracellular Ca2+ via the Orai1 Ca2+ channel, a process known as store-operated Ca2+ entry (SOCE). Intracellular Ca2+ overload can lead to premature activation of trypsinogen in pancreatic acinar cells and impaired fluid and HCO3- secretion in ductal cells. Increased and unbalanced reactive oxygen species (ROS) production caused by sustained Ca2+ elevation further contributes to cell dysfunction, leading to mitochondrial damage and cell death. Translational studies of AP identified several potential target molecules that can be modified to prevent intracellular Ca2+ overload. One of the most promising drugs, a selective inhibitor of the Orai1 channel that has been shown to inhibit extracellular Ca2+ influx and protect cells from injury, is currently being tested in clinical trials. In this review, we will summarise the recent advances in the field, with a special focus on the translational aspects of the basic findings.
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Affiliation(s)
- Petra Pallagi
- First Department of Medicine, University of Szeged, H6720 Szeged, Hungary; (P.P.); (T.M.); (Á.V.)
- HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, H6720 Szeged, Hungary
- HCEMM-SZTE Molecular Gastroenterology Research Group, University of Szeged, H6720 Szeged, Hungary
| | - Tamara Madácsy
- First Department of Medicine, University of Szeged, H6720 Szeged, Hungary; (P.P.); (T.M.); (Á.V.)
- HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, H6720 Szeged, Hungary
- HCEMM-SZTE Molecular Gastroenterology Research Group, University of Szeged, H6720 Szeged, Hungary
| | - Árpád Varga
- First Department of Medicine, University of Szeged, H6720 Szeged, Hungary; (P.P.); (T.M.); (Á.V.)
- HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, H6720 Szeged, Hungary
- HCEMM-SZTE Molecular Gastroenterology Research Group, University of Szeged, H6720 Szeged, Hungary
| | - József Maléth
- First Department of Medicine, University of Szeged, H6720 Szeged, Hungary; (P.P.); (T.M.); (Á.V.)
- HAS-USZ Momentum Epithelial Cell Signaling and Secretion Research Group, University of Szeged, H6720 Szeged, Hungary
- HCEMM-SZTE Molecular Gastroenterology Research Group, University of Szeged, H6720 Szeged, Hungary
- Correspondence: or ; Tel.: +36-(62)-342-877 or +36-70-41-66500
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11
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Fanczal J, Pallagi P, Görög M, Diszházi G, Almássy J, Madácsy T, Varga Á, Csernay-Biró P, Katona X, Tóth E, Molnár R, Rakonczay Z, Hegyi P, Maléth J. TRPM2-mediated extracellular Ca 2+ entry promotes acinar cell necrosis in biliary acute pancreatitis. J Physiol 2020; 598:1253-1270. [PMID: 31917868 DOI: 10.1113/jp279047] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 10/01/2019] [Accepted: 12/24/2019] [Indexed: 01/05/2023] Open
Abstract
KEY POINTS Acute biliary pancreatitis is a significant clinical challenge as currently no specific pharmaceutical treatment exists. Intracellular Ca2+ overload, increased reactive oxygen species (ROS) production, mitochondrial damage and intra-acinar digestive enzyme activation caused by bile acids are hallmarks of acute biliary pancreatitis. Transient receptor potential melastatin 2 (TRPM2) is a non-selective cation channel that has recently emerged as an important contributor to oxidative-stress-induced cellular Ca2+ overload across different diseases. We demonstrated that TRPM2 is expressed in the plasma membrane of mouse pancreatic acinar and ductal cells, which can be activated by increased oxidative stress induced by H2 O2 treatment and contributed to bile acid-induced extracellular Ca2+ influx in acinar cells, which promoted acinar cell necrosis in vitro and in vivo. These results suggest that the inhibition of TRPM2 may be a potential treatment option for biliary pancreatitis. ABSTRACT Acute biliary pancreatitis poses a significant clinical challenge as currently no specific pharmaceutical treatment exists. Disturbed intracellular Ca2+ signalling caused by bile acids is a hallmark of the disease, which induces increased reactive oxygen species (ROS) production, mitochondrial damage, intra-acinar digestive enzyme activation and cell death. Because of this mechanism of action, prevention of toxic cellular Ca2+ overload is a promising therapeutic target. Transient receptor potential melastatin 2 (TRPM2) is a non-selective cation channel that has recently emerged as an important contributor to oxidative-stress-induced cellular Ca2+ overload across different diseases. However, the expression and possible functions of TRPM2 in the exocrine pancreas remain unknown. Here we found that TRPM2 is expressed in the plasma membrane of mouse pancreatic acinar and ductal cells, which can be activated by increased oxidative stress induced by H2 O2 treatment. TRPM2 activity was found to contribute to bile acid-induced extracellular Ca2+ influx in acinar cells, but did not have the same effect in ductal cells. The generation of intracellular ROS in response to bile acids was remarkably higher in pancreatic acinar cells compared to isolated ducts, which can explain the difference between acinar and ductal cells. This activity promoted acinar cell necrosis in vitro independently from mitochondrial damage or mitochondrial fragmentation. In addition, bile-acid-induced experimental pancreatitis was less severe in TRPM2 knockout mice, whereas the lack of TRPM2 had no protective effect in cerulein-induced acute pancreatitis. Our results suggest that the inhibition of TRPM2 may be a potential treatment option for biliary pancreatitis.
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Affiliation(s)
- Júlia Fanczal
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary
| | - Petra Pallagi
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary.,HAS-USZ Momentum Epithelial Cell Signalling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Marietta Görög
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary.,HAS-USZ Momentum Epithelial Cell Signalling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Gyula Diszházi
- Department of Physiology, University of Debrecen, Debrecen, Hungary
| | - János Almássy
- Department of Physiology, University of Debrecen, Debrecen, Hungary
| | - Tamara Madácsy
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary.,HAS-USZ Momentum Epithelial Cell Signalling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Árpád Varga
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary.,HAS-USZ Momentum Epithelial Cell Signalling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Péter Csernay-Biró
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary
| | - Xénia Katona
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary.,HAS-USZ Momentum Epithelial Cell Signalling and Secretion Research Group, University of Szeged, Szeged, Hungary
| | - Emese Tóth
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary
| | - Réka Molnár
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary
| | - Zoltán Rakonczay
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - Péter Hegyi
- HAS-USZ Momentum Translational Gastroenterology Research Group, University of Szeged, Szeged, Hungary.,Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - József Maléth
- First Department of Internal Medicine, University of Szeged, Szeged, Hungary.,HAS-USZ Momentum Epithelial Cell Signalling and Secretion Research Group, University of Szeged, Szeged, Hungary.,Department of Public Health, University of Szeged, Szeged, Hungary
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12
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Madácsy T, Pallagi P, Maleth J. Cystic Fibrosis of the Pancreas: The Role of CFTR Channel in the Regulation of Intracellular Ca 2+ Signaling and Mitochondrial Function in the Exocrine Pancreas. Front Physiol 2018; 9:1585. [PMID: 30618777 PMCID: PMC6306458 DOI: 10.3389/fphys.2018.01585] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [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: 07/31/2018] [Accepted: 10/23/2018] [Indexed: 12/26/2022] Open
Abstract
Cystic fibrosis (CF) is the most common genetic disorder that causes a significant damage in secretory epithelial cells due to the defective ion flux across the cystic fibrosis transmembrane conductance regulator (CFTR) Cl- channel. Pancreas is one of the organs most frequently damaged by the disease leading to pancreatic insufficiency, abdominal pain and an increased risk of acute pancreatitis in CF patients causing a significant decrease in the quality of life. CFTR plays a central role in the pancreatic ductal secretory functions by carrying Cl- and HCO3 - ions across the apical membrane. Therefore pathophysiological studies in CF mostly focused on the effects of impaired ion secretion by pancreatic ductal epithelial cells leading to exocrine pancreatic damage. However, several studies indicated that CFTR has a central role in the regulation of intracellular signaling processes and is now more widely considered as a signaling hub in epithelial cells. In contrast, elevated intracellular Ca2+ level was observed in the lack of functional CFTR in different cell types including airway epithelial cells. In addition, impaired CFTR expression has been correlated with damaged mitochondrial function in epithelial cells. These alterations of intracellular signaling in CF are not well characterized in the exocrine pancreas yet. Therefore in this review we would like to summarize the complex role of CFTR in the exocrine pancreas with a special focus on the intracellular signaling and mitochondrial function.
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Affiliation(s)
- Tamara Madácsy
- First Department of Medicine, University of Szeged, Szeged, Hungary.,HAS-USZ Momentum Epithel Cell Signalling and Secretion Research Group, Szeged, Hungary
| | - Petra Pallagi
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Jozsef Maleth
- First Department of Medicine, University of Szeged, Szeged, Hungary.,HAS-USZ Momentum Epithel Cell Signalling and Secretion Research Group, Szeged, Hungary.,Department of Public Health, University of Szeged, Szeged, Hungary
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Szentesi A, Tóth E, Bálint E, Fanczal J, Madácsy T, Laczkó D, Ignáth I, Balázs A, Pallagi P, Maléth J, Rakonczay Z, Kui B, Illés D, Márta K, Blaskó Á, Demcsák A, Párniczky A, Pár G, Gódi S, Mosztbacher D, Szücs Á, Halász A, Izbéki F, Farkas N, Hegyi P. Analysis of Research Activity in Gastroenterology: Pancreatitis Is in Real Danger. PLoS One 2016; 11:e0165244. [PMID: 27776171 PMCID: PMC5077088 DOI: 10.1371/journal.pone.0165244] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 10/07/2016] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVE Biomedical investment trends in 2015 show a huge decrease of investment in gastroenterology. Since academic research usually provides the basis for industrial research and development (R&D), our aim was to understand research trends in the field of gastroenterology over the last 50 years and identify the most endangered areas. METHODS We searched for PubMed hits for gastrointestinal (GI) diseases for the 1965-2015 period. Overall, 1,554,325 articles were analyzed. Since pancreatology was identified as the most endangered field of research within gastroenterology, we carried out a detailed evaluation of research activity in pancreatology. RESULTS In 1965, among the major benign GI disorders, 51.9% of the research was performed on hepatitis, 25.7% on pancreatitis, 21.7% on upper GI diseases and only 0.7% on the lower GI disorders. Half a century later, in 2015, research on hepatitis and upper GI diseases had not changed significantly; however, studies on pancreatitis had dropped to 10.7%, while work on the lower GI disorders had risen to 23.4%. With regard to the malignant disorders (including liver, gastric, colon, pancreatic and oesophageal cancer), no such large-scale changes were observed in the last 50 years. Detailed analyses revealed that besides the drop in research activity in pancreatitis, there are serious problems with the quality of the studies as well. Only 6.8% of clinical trials on pancreatitis were registered and only 5.5% of these registered trials were multicentre and multinational (more than five centres and nations), i.e., the kind that provides the highest level of impact and evidence level. CONCLUSIONS There has been a clear drop in research activity in pancreatitis. New international networks and far more academic R&D activities should be established in order to find the first therapy specifically for acute pancreatitis.
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Affiliation(s)
- Andrea Szentesi
- Institute for Translational Medicine, University of Pécs, Pécs, Hungary
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Emese Tóth
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Emese Bálint
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Júlia Fanczal
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Tamara Madácsy
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Dorottya Laczkó
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Imre Ignáth
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Anita Balázs
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Petra Pallagi
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - József Maléth
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Zoltán Rakonczay
- First Department of Medicine, University of Szeged, Szeged, Hungary
- Department of Pathophysiology, University of Szeged, Szeged, Hungary
| | - Balázs Kui
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Dóra Illés
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Katalin Márta
- Institute for Translational Medicine, University of Pécs, Pécs, Hungary
| | - Ágnes Blaskó
- Institute for Translational Medicine, University of Pécs, Pécs, Hungary
| | - Alexandra Demcsák
- Department of Pediatrics and Pediatric Health Center, University of Szeged, Szeged, Hungary
| | | | - Gabriella Pár
- Department of Gastroenterology, First Department of Medicine, University of Pécs, Pécs, Hungary
| | - Szilárd Gódi
- Department of Translational Medicine, First Department of Medicine, University of Pécs, Pécs, Hungary
| | - Dóra Mosztbacher
- Department of Pediatrics, János Balassa Hospital of County Tolna, Szekszárd, Hungary
| | - Ákos Szücs
- First Department of Surgery, Semmelweis University, Budapest, Hungary
| | - Adrienn Halász
- First Department of Medicine, St. George University Teaching Hospital of County Fejér, Székesfehérvár, Hungary
| | - Ferenc Izbéki
- First Department of Medicine, St. George University Teaching Hospital of County Fejér, Székesfehérvár, Hungary
| | - Nelli Farkas
- Institute of Bioanalysis, University of Pécs, Pécs, Hungary
| | - Péter Hegyi
- Institute for Translational Medicine, University of Pécs, Pécs, Hungary
- First Department of Medicine, University of Szeged, Szeged, Hungary
- Department of Translational Medicine, First Department of Medicine, University of Pécs, Pécs, Hungary
- Hungarian Academy of Sciences—University of Szeged, Momentum Gastroenterology Multidisciplinary Research Group, Szeged, Hungary
- * E-mail:
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Maléth J, Madácsy T, Pallagi P, Balázs A, Venglovecz V, Rakonczay Z, Hegyi P. Pancreatic epithelial fluid and bicarbonate secretion is significantly elevated in the absence of peripheral serotonin. Gut 2015; 64:1497-8. [PMID: 26069275 DOI: 10.1136/gutjnl-2015-309776] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 05/04/2015] [Indexed: 12/08/2022]
Affiliation(s)
- József Maléth
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Tamara Madácsy
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Petra Pallagi
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Anita Balázs
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Viktória Venglovecz
- Department of Pharmacology and Pharmacotherapy, University of Szeged, Szeged, Hungary
| | - Zoltán Rakonczay
- First Department of Medicine, University of Szeged, Szeged, Hungary
| | - Péter Hegyi
- First Department of Medicine, University of Szeged, Szeged, Hungary MTA-SZTE Momentum Translational Gastroenterology Research Group, University of Szeged, Szeged, Hungary
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