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Ester L, Cabrita I, Ventzke M, Kieckhöfer E, Christodoulou M, Mandel AM, Diefenhardt P, Fabretti F, Benzing T, Habbig S, Schermer B. The role of the FSGS disease gene product and nuclear pore protein NUP205 in regulating nuclear localization and activity of transcriptional regulators YAP and TAZ. Hum Mol Genet 2023; 32:3153-3165. [PMID: 37565816 PMCID: PMC10630254 DOI: 10.1093/hmg/ddad135] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/31/2023] [Accepted: 08/10/2023] [Indexed: 08/12/2023] Open
Abstract
Mutations in genes encoding nuclear pore proteins (NUPs) lead to the development of steroid-resistant nephrotic syndrome and focal segmental glomerulosclerosis (FSGS). However, the precise molecular mechanisms by which NUP dysfunction contributes to podocyte injury preceding FSGS remain unclear. The tightly regulated activity of Yes-associated protein (YAP) and WW-domain-containing transcription regulator 1 (TAZ), the transcriptional effectors of the Hippo pathway, is crucial for podocytes and the maintenance of the glomerular filter. In this study, we investigate the impact of NUPs on the regulation of YAP/TAZ nuclear import and activity in podocytes. In unbiased interactome studies using quantitative label-free mass spectrometry, we identify the FSGS disease gene products NUP107, NUP133, NUP205, and Exportin-5 (XPO5) as components of YAP and TAZ protein complexes in podocytes. Moreover, we demonstrate that NUP205 is essential for YAP/TAZ nuclear import. Consistently, both the nuclear interaction of YAP/TAZ with TEA domain transcription factor 1 and their transcriptional activity were dependent on NUP205 expression. Additionally, we elucidate a regulatory feedback mechanism whereby YAP activity is modulated in response to TAZ-mediated NUP205 expression. In conclusion, this study establishes a connection between the FSGS disease protein NUP205 and the activity of the transcriptional regulators and Hippo effectors YAP and TAZ and it proposes a potential pathological role of YAP/TAZ dysregulation in podocytes of patients with pathogenic NUP205 variants.
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Affiliation(s)
- Lioba Ester
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Inês Cabrita
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Michel Ventzke
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Emilia Kieckhöfer
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Marita Christodoulou
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Amrei M Mandel
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Paul Diefenhardt
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Francesca Fabretti
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Thomas Benzing
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Sandra Habbig
- Department of Pediatrics, University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
| | - Bernhard Schermer
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Kerpener Str. 62, 50937 Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Faculty of Medicine and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
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Centeio R, Cabrita I, Schreiber R, Kunzelmann K. TMEM16A/F support exocytosis but do not inhibit Notch-mediated goblet cell metaplasia of BCi-NS1.1 human airway epithelium. Front Physiol 2023; 14:1157704. [PMID: 37234411 PMCID: PMC10206426 DOI: 10.3389/fphys.2023.1157704] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 04/26/2023] [Indexed: 05/28/2023] Open
Abstract
Cl- channels such as the Ca2+ activated Cl- channel TMEM16A and the Cl- permeable phospholipid scramblase TMEM16F may affect the intracellular Cl- concentration ([Cl-]i), which could act as an intracellular signal. Loss of airway expression of TMEM16A induced a massive expansion of the secretory cell population like goblet and club cells, causing differentiation into a secretory airway epithelium. Knockout of the Ca2+-activated Cl- channel TMEM16A or the phospholipid scramblase TMEM16F leads to mucus accumulation in intestinal goblet cells and airway secretory cells. We show that both TMEM16A and TMEM16F support exocytosis and release of exocytic vesicles, respectively. Lack of TMEM16A/F expression therefore causes inhibition of mucus secretion and leads to goblet cell metaplasia. The human basal epithelial cell line BCi-NS1.1 forms a highly differentiated mucociliated airway epithelium when grown in PneumaCult™ media under an air liquid interface. The present data suggest that mucociliary differentiation requires activation of Notch signaling, but not the function of TMEM16A. Taken together, TMEM16A/F are important for exocytosis, mucus secretion and formation of extracellular vesicles (exosomes or ectosomes) but the present data do no not support a functional role of TMEM16A/F in Notch-mediated differentiation of BCi-NS1.1 cells towards a secretory epithelium.
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Affiliation(s)
- Raquel Centeio
- Physiological Institute, University of Regensburg, Regensburg, Germany
| | - Inês Cabrita
- Department II of Internal Medicine and Center for Molecular Medicine Cologne, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Rainer Schreiber
- Physiological Institute, University of Regensburg, Regensburg, Germany
| | - Karl Kunzelmann
- Physiological Institute, University of Regensburg, Regensburg, Germany
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Ousingsawat J, Centeio R, Cabrita I, Talbi K, Zimmer O, Graf M, Göpferich A, Schreiber R, Kunzelmann K. Airway Delivery of Hydrogel-Encapsulated Niclosamide for the Treatment of Inflammatory Airway Disease. Int J Mol Sci 2022; 23:ijms23031085. [PMID: 35163010 PMCID: PMC8835663 DOI: 10.3390/ijms23031085] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/03/2022] [Accepted: 01/17/2022] [Indexed: 11/16/2022] Open
Abstract
Repurposing of the anthelminthic drug niclosamide was proposed as an effective treatment for inflammatory airway diseases such as asthma, cystic fibrosis, and chronic obstructive pulmonary disease. Niclosamide may also be effective for the treatment of viral respiratory infections, such as SARS-CoV-2, respiratory syncytial virus, and influenza. While systemic application of niclosamide may lead to unwanted side effects, local administration via aerosol may circumvent these problems, particularly when the drug is encapsulated into small polyethylene glycol (PEG) hydrospheres. In the present study, we examined whether PEG-encapsulated niclosamide inhibits the production of mucus and affects the pro-inflammatory mediator CLCA1 in mouse airways in vivo, while effects on mucociliary clearance were assessed in excised mouse tracheas. The potential of encapsulated niclosamide to inhibit TMEM16A whole-cell Cl- currents and intracellular Ca2+ signalling was assessed in airway epithelial cells in vitro. We achieved encapsulation of niclosamide in PEG-microspheres and PEG-nanospheres (Niclo-spheres). When applied to asthmatic mice via intratracheal instillation, Niclo-spheres strongly attenuated overproduction of mucus, inhibited secretion of the major proinflammatory mediator CLCA1, and improved mucociliary clearance in tracheas ex vivo. These effects were comparable for niclosamide encapsulated in PEG-nanospheres and PEG-microspheres. Niclo-spheres inhibited the Ca2+ activated Cl- channel TMEM16A and attenuated mucus production in CFBE and Calu-3 human airway epithelial cells. Both inhibitory effects were explained by a pronounced inhibition of intracellular Ca2+ signals. The data indicate that poorly dissolvable compounds such as niclosamide can be encapsulated in PEG-microspheres/nanospheres and deposited locally on the airway epithelium as encapsulated drugs, which may be advantageous over systemic application.
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Affiliation(s)
- Jiraporn Ousingsawat
- Physiological Institute, University of Regensburg, University Street 31, 93040 Regensburg, Germany; (J.O.); (R.C.); (I.C.); (K.T.); (R.S.)
| | - Raquel Centeio
- Physiological Institute, University of Regensburg, University Street 31, 93040 Regensburg, Germany; (J.O.); (R.C.); (I.C.); (K.T.); (R.S.)
| | - Inês Cabrita
- Physiological Institute, University of Regensburg, University Street 31, 93040 Regensburg, Germany; (J.O.); (R.C.); (I.C.); (K.T.); (R.S.)
| | - Khaoula Talbi
- Physiological Institute, University of Regensburg, University Street 31, 93040 Regensburg, Germany; (J.O.); (R.C.); (I.C.); (K.T.); (R.S.)
| | - Oliver Zimmer
- Department of Pharmaceutical Technology, University of Regensburg, 93040 Regensburg, Germany; (O.Z.); (M.G.); (A.G.)
| | - Moritz Graf
- Department of Pharmaceutical Technology, University of Regensburg, 93040 Regensburg, Germany; (O.Z.); (M.G.); (A.G.)
| | - Achim Göpferich
- Department of Pharmaceutical Technology, University of Regensburg, 93040 Regensburg, Germany; (O.Z.); (M.G.); (A.G.)
| | - Rainer Schreiber
- Physiological Institute, University of Regensburg, University Street 31, 93040 Regensburg, Germany; (J.O.); (R.C.); (I.C.); (K.T.); (R.S.)
| | - Karl Kunzelmann
- Physiological Institute, University of Regensburg, University Street 31, 93040 Regensburg, Germany; (J.O.); (R.C.); (I.C.); (K.T.); (R.S.)
- Correspondence: ; Tel.: +49-(0)941-943-4302; Fax: +49-(0)941-943-4315
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Talbi K, Cabrita I, Kraus A, Hofmann S, Skoczynski K, Kunzelmann K, Buchholz B, Schreiber R. The chloride channel CFTR is not required for cyst growth in an ADPKD mouse model. FASEB J 2021; 35:e21897. [PMID: 34473378 DOI: 10.1096/fj.202100843r] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 05/24/2021] [Revised: 08/09/2021] [Accepted: 08/18/2021] [Indexed: 01/01/2023]
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) is characterized by the development of bilateral renal cysts which enlarge continuously, leading to compression of adjacent intact nephrons. The growing cysts lead to a progressive decline in renal function. Cyst growth is driven by enhanced cell proliferation and chloride secretion into the cyst lumen. Chloride secretion is believed to occur mainly by the cAMP-activated cystic fibrosis transmembrane conductance regulator (CFTR), with some contribution by the calcium-activated chloride channel TMEM16A. However, our previous work suggested TMEM16A as a major factor for renal cyst formation. The contribution of CFTR to cyst formation has never been demonstrated in an adult ADPKD mouse model. We used mice with an inducible tubule-specific Pkd1 knockout, which consistently develop polycystic kidneys upon deletion of Pkd1. Cellular properties, ion currents, and cyst development in these mice were compared with that of mice carrying a co-deletion of Pkd1 and Cftr. Knockout of Cftr did not reveal any significant impact on cyst formation in the ADPKD mouse model. Furthermore, knockout of Cftr did not attenuate the largely augmented cell proliferation observed in Pkd1 knockout kidneys. Patch clamp analysis on primary renal epithelial cells lacking expression of Pkd1 indicated an only marginal contribution of CFTR to whole cell Cl- currents, which were clearly dominated by calcium-activated TMEM16A currents. In conclusion, CFTR does not essentially contribute to renal cyst formation in mice caused by deletion of Pkd1. Enhanced cell proliferation and chloride secretion is caused primarily by upregulation of the calcium-activated chloride channel TMEM16A.
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Affiliation(s)
- Khaoula Talbi
- Department of Physiology, University of Regensburg, Regensburg, Germany
| | - Inês Cabrita
- Department of Physiology, University of Regensburg, Regensburg, Germany
| | - Andre Kraus
- Department of Nephrology and Hypertension, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Sascha Hofmann
- Department of Physiology, University of Regensburg, Regensburg, Germany
| | - Kathrin Skoczynski
- Department of Nephrology and Hypertension, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Karl Kunzelmann
- Department of Physiology, University of Regensburg, Regensburg, Germany
| | - Bjoern Buchholz
- Department of Nephrology and Hypertension, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - Rainer Schreiber
- Department of Physiology, University of Regensburg, Regensburg, Germany
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Cabrita I, Benedetto R, Wanitchakool P, Lerias J, Centeio R, Ousingsawat J, Schreiber R, Kunzelmann K. TMEM16A Mediates Mucus Production in Human Airway Epithelial Cells. Am J Respir Cell Mol Biol 2021; 64:50-58. [PMID: 33026825 DOI: 10.1165/rcmb.2019-0442oc] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
TMEM16A is a Ca2+-activated chloride channel that was shown to enhance production and secretion of mucus in inflamed airways. It is, however, not clear whether TMEM16A directly supports mucus production, or whether mucin and TMEM16A are upregulated independently during inflammatory airway diseases such as asthma and cystic fibrosis (CF). We examined this question using BCi-NS1 cells, a human airway basal cell line that maintains multipotent differentiation capacity, and the two human airway epithelial cell lines, Calu-3 and CFBE. The data demonstrate that exposure of airway epithelial cells to IL-8 and IL-13, two cytokines known to be enhanced in CF and asthma, respectively, leads to an increase in mucus production. Expression of MUC5AC was fully dependent on expression of TMEM16A, as shown by siRNA knockdown of TMEM16A. In addition, different inhibitors of TMEM16A attenuated IL-13-induced mucus production. Interestingly, in CFBE cells expressing F508 delCFTR, IL-13 was unable to upregulate membrane expression of TMEM16A or Ca2+-activated whole cell currents. The regulator of TMEM16A, CLCA1, strongly augmented both Ca2+- and cAMP-activated Cl- currents in cells expressing wtCFTR but failed to augment membrane expression of TMEM16A in F508 delCFTR-expressing CFBE cells. The data confirm the functional relationship between CFTR and TMEM16A and suggest an impaired upregulation of TMEM16A by IL-13 or CLCA1 in cells expressing the most frequent CF-causing mutation F508 delCFTR.
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Affiliation(s)
- Inês Cabrita
- Physiological Institute, University of Regensburg, Regensburg, Germany
| | - Roberta Benedetto
- Physiological Institute, University of Regensburg, Regensburg, Germany
| | | | - Joana Lerias
- Physiological Institute, University of Regensburg, Regensburg, Germany
| | - Raquel Centeio
- Physiological Institute, University of Regensburg, Regensburg, Germany
| | | | - Rainer Schreiber
- Physiological Institute, University of Regensburg, Regensburg, Germany
| | - Karl Kunzelmann
- Physiological Institute, University of Regensburg, Regensburg, Germany
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Park JH, Ousingsawat J, Cabrita I, Bettels RE, Große-Onnebrink J, Schmalstieg C, Biskup S, Reunert J, Rust S, Schreiber R, Kunzelmann K, Marquardt T. TMEM16A deficiency: a potentially fatal neonatal disease resulting from impaired chloride currents. J Med Genet 2020; 58:247-253. [PMID: 32487539 DOI: 10.1136/jmedgenet-2020-106978] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 04/14/2020] [Accepted: 04/18/2020] [Indexed: 12/13/2022]
Abstract
INTRODUCTION TMEM16A is a calcium-activated chloride channel expressed in various secretory epithelia. Two siblings presented in early infancy with reduced intestinal peristalsis and recurrent episodes of haemorrhagic diarrhoea. In one of them, the episodes were characterised by hepatic pneumatosis with gas bubbles in the portal vein similar to necrotising enterocolitis of the newborn. METHODS Exome sequencing identified a homozygous truncating pathogenic variant in ANO1. Expression analysis was performed using reverse transcription PCR, western blot and immunohistochemistry. Electrophysiological and cell biological studies were employed to characterise the effects on ion transport both in patient respiratory epithelial cells and in transfected HEK293 cells. RESULTS The identified variant led to TMEM16A dysfunction, which resulted in abolished calcium-activated Cl- currents. Secondarily, CFTR function is affected due to the close interplay between both channels without inducing cystic fibrosis (CF). CONCLUSION TMEM16A deficiency is a potentially fatal disorder caused by abolished calcium-activated Cl- currents in secretory epithelia. Secondary impairment of CFTR function did not cause a CF phenotyp, which may have implications for CF treatment.
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Affiliation(s)
- Julien H Park
- Department of Paediatrics, University Hospital Münster, Münster, Nordrhein-Westfalen, Germany
| | | | - Inês Cabrita
- Department of Physiology, University of Regensburg, Regensburg, Bayern, Germany
| | - Ruth E Bettels
- Department of Paediatrics, University Hospital Münster, Münster, Nordrhein-Westfalen, Germany
| | - Jörg Große-Onnebrink
- Department of Paediatrics, University Hospital Münster, Münster, Nordrhein-Westfalen, Germany
| | - Christian Schmalstieg
- Department of Paediatrics, University Hospital Münster, Münster, Nordrhein-Westfalen, Germany
| | | | - Janine Reunert
- Department of Paediatrics, University Hospital Münster, Münster, Nordrhein-Westfalen, Germany
| | - Stephan Rust
- Department of Paediatrics, University Hospital Münster, Münster, Nordrhein-Westfalen, Germany
| | - Rainer Schreiber
- Department of Physiology, University of Regensburg, Regensburg, Bayern, Germany
| | - Karl Kunzelmann
- Department of Physiology, University of Regensburg, Regensburg, Bayern, Germany
| | - Thorsten Marquardt
- Department of Paediatrics, University Hospital Münster, Münster, Nordrhein-Westfalen, Germany
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Centeio R, Cabrita I, Benedetto R, Talbi K, Ousingsawat J, Schreiber R, Sullivan JK, Kunzelmann K. Pharmacological Inhibition and Activation of the Ca 2+ Activated Cl - Channel TMEM16A. Int J Mol Sci 2020; 21:ijms21072557. [PMID: 32272686 PMCID: PMC7177308 DOI: 10.3390/ijms21072557] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/26/2020] [Accepted: 04/02/2020] [Indexed: 12/14/2022] Open
Abstract
TMEM16A is a Ca2+ activated Cl− channel with important functions in airways, intestine, and other epithelial organs. Activation of TMEM16A is proposed as a therapy in cystic fibrosis (CF) to reinstall airway Cl− secretion and to enhance airway surface liquid (ASL). This CFTR-agnostic approach is thought to improve mucociliary clearance and lung function in CF. This could indeed improve ASL, however, mucus release and airway contraction may also be induced by activators of TMEM16A, particularly in inflamed airways of patients with asthma, COPD, or CF. Currently, both activators and inhibitors of TMEM16A are developed and examined in different types of tissues. Here we compare activation and inhibition of endogenous and overexpressed TMEM16A and analyze potential off-target effects. The three well-known blockers benzbromarone, niclosamide, and Ani9 inhibited both TMEM16A and ATP-induced Ca2+ increase by variable degrees, depending on the cell type. Niclosamide, while blocking Ca2+ activated TMEM16A, also induced a subtle but significant Ca2+ store release and inhibited store-operated Ca2+ influx. Niclosamide, benzbromarone and Ani9 also affected TMEM16F whole cell currents, indicating limited specificity for these inhibitors. The compounds Eact, cinnamaldehyde, and melittin, as well as the phosphatidylinositol diC8-PIP2 are the reported activators of TMEM16A. However, the compounds were unable to activate endogenous TMEM16A in HT29 colonic epithelial cells. In contrast, TMEM16A overexpressed in HEK293 cells was potently stimulated by these activators. We speculate that overexpressed TMEM16A might have a better accessibility to intracellular Ca2+, which causes spontaneous activity even at basal intracellular Ca2+ concentrations. Small molecules may therefore potentiate pre-stimulated TMEM16A currents, but may otherwise fail to activate silent endogenous TMEM16A.
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Affiliation(s)
- Raquel Centeio
- Physiological Institute, University of Regensburg, D-93053 Regensburg, Germany; (R.C.); (I.C.); (R.B.); (K.T.); (J.O.); (R.S.)
| | - Inês Cabrita
- Physiological Institute, University of Regensburg, D-93053 Regensburg, Germany; (R.C.); (I.C.); (R.B.); (K.T.); (J.O.); (R.S.)
| | - Roberta Benedetto
- Physiological Institute, University of Regensburg, D-93053 Regensburg, Germany; (R.C.); (I.C.); (R.B.); (K.T.); (J.O.); (R.S.)
| | - Khaoula Talbi
- Physiological Institute, University of Regensburg, D-93053 Regensburg, Germany; (R.C.); (I.C.); (R.B.); (K.T.); (J.O.); (R.S.)
| | - Jiraporn Ousingsawat
- Physiological Institute, University of Regensburg, D-93053 Regensburg, Germany; (R.C.); (I.C.); (R.B.); (K.T.); (J.O.); (R.S.)
| | - Rainer Schreiber
- Physiological Institute, University of Regensburg, D-93053 Regensburg, Germany; (R.C.); (I.C.); (R.B.); (K.T.); (J.O.); (R.S.)
| | | | - Karl Kunzelmann
- Physiological Institute, University of Regensburg, D-93053 Regensburg, Germany; (R.C.); (I.C.); (R.B.); (K.T.); (J.O.); (R.S.)
- * Correspondence: ; Tel.: +49-(0)941-943-4302; Fax: +49-(0)941-943-4315
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Kunzelmann K, Centeio R, Wanitchakool P, Cabrita I, Benedetto R, Saha T, Hoque KM, Schreiber R. Control of Ion Transport by Tmem16a Expressed in Murine Intestine. Front Physiol 2019; 10:1262. [PMID: 31680994 PMCID: PMC6797858 DOI: 10.3389/fphys.2019.01262] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 07/03/2019] [Accepted: 09/17/2019] [Indexed: 12/30/2022] Open
Abstract
Cl– secretion by the human and murine intestinal epithelium occurs through the cystic fibrosis transmembrane conductance regulator (cftr). However, the Ca2+ activated Cl– channel Tmem16a was shown to contribute to Cl– secretion, mainly, but not exclusively, as a basolaterally located Cl– channel that controls basolateral Ca2+ signaling, and thus activation of basolateral Ca2+ dependent Sk4 K+ channels. In intestinal goblet cells, Tmem16a was shown to regulated Ca2+ signals required for exocytosis of mucus. Because a recent report denied the existence and functional role of Tmem16a in murine intestine, we reexamined in detail expression of mRNA and protein for Tmem16a in mouse colon. In experiments using short-circuited Ussing chamber and whole cell patch-clamp techniques, we further compared ion transport in wild type (WT) colon with that in mice with intestinal epithelial specific knockout of Tmem16a. As reported earlier we fully confirm expression of Tmem16a in colonic epithelial cells and the role of Tmem16a for both Ca2+-dependent and cAMP-regulated ion secretion.
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Affiliation(s)
- Karl Kunzelmann
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
| | - Raquel Centeio
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
| | | | - Inês Cabrita
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
| | - Roberta Benedetto
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
| | - Tultul Saha
- Division of Pathophysiology, National Institute of Cholera and Enteric Diseases, Kolkata, India
| | - Kazi Mirajul Hoque
- Division of Pathophysiology, National Institute of Cholera and Enteric Diseases, Kolkata, India.,Department of Physiology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Rainer Schreiber
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
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Cabrita I, Benedetto R, Schreiber R, Kunzelmann K. Niclosamide repurposed for the treatment of inflammatory airway disease. JCI Insight 2019; 4:128414. [PMID: 31391337 DOI: 10.1172/jci.insight.128414] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 07/02/2019] [Indexed: 12/22/2022] Open
Abstract
Inflammatory airway diseases, such as asthma, cystic fibrosis (CF), and chronic obstructive pulmonary disease (COPD), are characterized by mucus hypersecretion and airway plugging. In both CF and asthma, enhanced expression of the Ca2+-activated Cl- channel TMEM16A is detected in mucus-producing club/goblet cells and airway smooth muscle. TMEM16A contributes to mucus hypersecretion and bronchoconstriction, which are both inhibited by blockers of TMEM16A, such as niflumic acid. Here we demonstrate that the FDA-approved drug niclosamide, a potent inhibitor of TMEM16A identified by high-throughput screening, is an inhibitor of both TMEM16A and TMEM16F. In asthmatic mice, niclosamide reduced mucus production and secretion, as well as bronchoconstriction, and showed additional antiinflammatory effects. Using transgenic asthmatic mice, we found evidence that TMEM16A and TMEM16F are required for normal mucus production/secretion, which may be due to their effects on intracellular Ca2+ signaling. TMEM16A and TMEM16F support exocytic release of mucus and inflammatory mediators, both of which are blocked by niclosamide. Thus, inhibition of mucus and cytokine release, bronchorelaxation, and reported antibacterial effects make niclosamide a potentially suitable drug for the treatment of inflammatory airway diseases, such as CF, asthma, and COPD.
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Benedetto R, Ousingsawat J, Cabrita I, Pinto M, Lérias JR, Wanitchakool P, Schreiber R, Kunzelmann K. Plasma membrane-localized TMEM16 proteins are indispensable for expression of CFTR. J Mol Med (Berl) 2019; 97:711-722. [PMID: 30915480 DOI: 10.1007/s00109-019-01770-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 02/22/2019] [Accepted: 03/05/2019] [Indexed: 10/27/2022]
Abstract
The cystic fibrosis transmembrane conductance regulator (CFTR) is the secretory chloride channel in epithelial tissues that has a central role in cystic fibrosis (CF) lung and gastrointestinal disease. A recent publication demonstrates a close association between CFTR and TMEM16A, the calcium-activated chloride channel. Thus, no CFTR chloride currents could be detected in airways and large intestine from mice lacking epithelial expression of TMEM16A. Here, we demonstrate that another plasma membrane-localized TMEM16 paralogue, TMEM16F, can compensate for the lack of TMEM16A. Using TMEM16 knockout mice, human lymphocytes, and a number of human cell lines with endogenous protein expression or heterologous expression, we demonstrate that CFTR can only function in the presence of either TMEM16A or TMEM16F. Double knockout of intestinal epithelial TMEM16A/F expression did not produce offsprings, suggesting a lethal phenotype in utero. Plasma membrane-localized TMEM16A or TMEM16F is required for exocytosis and expression of CFTR in the plasma membrane. TMEM16A/F proteins may therefore have an impact on disease severity in CF. KEY MESSAGES: • Cystic fibrosis is caused by the defective Cl- channel cystic fibrosis transmembrane conductance regulator (CFTR). • A close relationship exists between CFTR and the calcium-activated chloride channels TMEM16A/TMEM16F. • In conditional airway and intestinal knockout mice, lymphocytes from Scott disease patients and in overexpressing cells, CFTR is not functional in the absence of TMEM16A and TMEM16F. • TMEM16A and TMEM16F support membrane exocytosis and are essential for plasma membrane insertion of CFTR.
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Affiliation(s)
- Roberta Benedetto
- Physiological Institute, University of Regensburg, University Street 31, D-93053, Regensburg, Germany
| | - Jiraporn Ousingsawat
- Physiological Institute, University of Regensburg, University Street 31, D-93053, Regensburg, Germany
| | - Inês Cabrita
- Physiological Institute, University of Regensburg, University Street 31, D-93053, Regensburg, Germany
| | - Madalena Pinto
- Physiological Institute, University of Regensburg, University Street 31, D-93053, Regensburg, Germany
| | - Joana R Lérias
- Physiological Institute, University of Regensburg, University Street 31, D-93053, Regensburg, Germany
| | - Podchanart Wanitchakool
- Physiological Institute, University of Regensburg, University Street 31, D-93053, Regensburg, Germany
| | - Rainer Schreiber
- Physiological Institute, University of Regensburg, University Street 31, D-93053, Regensburg, Germany
| | - Karl Kunzelmann
- Physiological Institute, University of Regensburg, University Street 31, D-93053, Regensburg, Germany.
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11
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Kunzelmann K, Ousingsawat J, Cabrita I, Doušová T, Bähr A, Janda M, Schreiber R, Benedetto R. TMEM16A in Cystic Fibrosis: Activating or Inhibiting? Front Pharmacol 2019; 10:3. [PMID: 30761000 PMCID: PMC6362895 DOI: 10.3389/fphar.2019.00003] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [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: 08/30/2018] [Accepted: 01/04/2019] [Indexed: 12/26/2022] Open
Abstract
The inflammatory airway disease cystic fibrosis (CF) is characterized by airway obstruction due to mucus hypersecretion, airway plugging, and bronchoconstriction. The cystic fibrosis transmembrane conductance regulator (CFTR) chloride channel is dysfunctional in CF, leading to defects in epithelial transport. Although CF pathogenesis is still disputed, activation of alternative Cl- channels is assumed to improve lung function in CF. Two suitable non-CFTR Cl- channels are present in the airway epithelium, the Ca2+ activated channel TMEM16A and SLC26A9. Activation of these channels is thought to be feasible to improve hydration of the airway mucus and to increase mucociliary clearance. Interestingly, both channels are upregulated during inflammatory lung disease. They are assumed to support fluid secretion, necessary to hydrate excess mucus and to maintain mucus clearance. During inflammation, however, TMEM16A is upregulated particularly in mucus producing cells, with only little expression in ciliated cells. Recently it was shown that knockout of TMEM16A in ciliated cells strongly compromises Cl- conductance and attenuated mucus secretion, but does not lead to a CF-like lung disease and airway plugging. Along this line, activation of TMEM16A by denufosol, a stable purinergic ligand, failed to demonstrate any benefit to CF patients in earlier studies. It rather induced adverse effects such as cough. A number of studies suggest that TMEM16A is essential for mucus secretion and possibly also for mucus production. Evidence is now provided for a crucial role of TMEM16A in fusion of mucus-filled granules with the apical plasma membrane and cellular exocytosis. This is probably due to local Ca2+ signals facilitated by TMEM16A. Taken together, TMEM16A supports fluid secretion by ciliated airway epithelial cells, but also maintains excessive mucus secretion during inflammatory airway disease. Because TMEM16A also supports airway smooth muscle contraction, inhibition rather than activation of TMEM16A might be the appropriate treatment for CF lung disease, asthma and COPD. As a number of FDA-approved and well-tolerated drugs have been shown to inhibit TMEM16A, evaluation in clinical trials appears timely.
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Affiliation(s)
- Karl Kunzelmann
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
| | | | - Inês Cabrita
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
| | - Tereza Doušová
- Department of Pediatrics, Second Faculty of Medicine, University Hospital Motol, Charles University in Prague, Prague, Czechia
| | - Andrea Bähr
- Institute of Molecular Animal Breeding and Biotechnology, Ludwig-Maximilians-Universität München, Munich, Germany
- Innere Medizin I, Klinikum Rechts der Isar der TU München, München, Germany
| | - Melanie Janda
- Institute of Molecular Animal Breeding and Biotechnology, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Rainer Schreiber
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
| | - Roberta Benedetto
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
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12
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Abstract
Transmembrane member 16A (TMEM16A) is the Ca2+-activated chloride channel in airways and intestine. It has been associated with goblet cell metaplasia, as expression of TMEM16A is strongly up-regulated in cystic fibrosis and asthma during mucus hypersecretion. However, the possible role of TMEM16A for mucus production or mucus secretion remains obscure, and whether TMEM16A controls the function of intestinal goblet cells is entirely unknown. Basal mucus secretion in lungs occurs through low levels of ATP in the airway surface liquid. Here, we report for the first time that TMEM16A is essential for basal secretion of mucus in airways and intestine. Airway-ciliated and intestinal epithelial-specific knockout of TMEM16A ( TMEM16Aflox/floxFoxJ1, TMEM16Aflox/floxVil1) leads to accumulation of mucus in airway club (Clara) cells and intestinal goblet cells, respectively. Acute ATP-induced mucus secretion by airway club cells is inhibited when TMEM16A is knocked out in ciliated cells, possibly as a result of compromised release of prosecretory cytokines. Knockdown or inhibition of TMEM16A in human Calu3 airway epithelial cells indicates compromised IL-8 release. In intestinal goblet cells lacking expression of TMEM16A, mucus accumulates as a result of compromised ATP-induced secretion. In contrast, cholinergic mucus secretion by compound exocytosis is independent of TMEM16A. The data demonstrate a previously unrecognized role of TMEM16A for membrane exocytosis and describe a novel, ATP-driven pathway for intestinal mucus secretion. We conclude that ATP-dependent mucus secretion in both airways and intestine requires TMEM16A. The present results may form the basis for a novel, therapeutic approach for the treatment of mucus hypersecretion in inflammatory airway and intestinal disease.-Benedetto, R., Cabrita, I., Schreiber, R., Kunzelmann, K. TMEM16A is indispensable for basal mucus secretion in airways and intestine.
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Affiliation(s)
- Roberta Benedetto
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
| | - Inês Cabrita
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
| | - Rainer Schreiber
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
| | - Karl Kunzelmann
- Institut für Physiologie, Universität Regensburg, Regensburg, Germany
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13
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Simões F, Ousingsawat J, Wanitchakool P, Fonseca A, Cabrita I, Benedetto R, Schreiber R, Kunzelmann K. CFTR supports cell death through ROS-dependent activation of TMEM16F (anoctamin 6). Pflugers Arch 2017; 470:305-314. [DOI: 10.1007/s00424-017-2065-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 07/25/2017] [Accepted: 08/28/2017] [Indexed: 12/11/2022]
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14
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Cabrita I, Benedetto R, Fonseca A, Wanitchakool P, Sirianant L, Skryabin BV, Schenk LK, Pavenstädt H, Schreiber R, Kunzelmann K. Differential effects of anoctamins on intracellular calcium signals. FASEB J 2017; 31:2123-2134. [PMID: 28183802 DOI: 10.1096/fj.201600797rr] [Citation(s) in RCA: 77] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 01/23/2017] [Indexed: 01/04/2023]
Abstract
The Ca2+-activated Cl- channel TMEM16A [anoctamin (ANO)1] is homologous to yeast Ist2 and has been shown to tether the cortical endoplasmic reticulum (ER) to the plasma membrane. We therefore examined whether ANO1 and other members of the ANO family affect intracellular Ca2+ ([Ca2+]i) signals. It is shown that expression of ANO1 augments Ca2+ store release upon stimulation of GPCRs, whereas knockdown of ANO1, or lack of Ano1 expression in Ano1-/- animals, as shown in an earlier report, inhibits Ca2+ release. ANO6, and -10 show similar effects, whereas expression of ANO4, -8, and -9 attenuate filling of the ER store. The impact of ANO1 and -4 were examined in more detail. ANO1 colocalized and interacted with IP3R, whereas ANO4 colocalized with SERCA Ca2+ pumps and interacted with ORAI-1 channels, respectively. ANO1 Cl currents were rapidly activated exclusively through Ca2+ store release, and remained untouched by influx of extracellular Ca2+ In contrast expression of ANO4 caused a delayed activation of membrane-localized ANO6 channels, solely through store-operated Ca2+ entry via ORAI. Ca2+ signals were inhibited by knocking down expression of endogenous ANO1, -5, -6, and -10 and were also reduced in epithelial cells from Ano10-/- mice. The data suggest that ANOs affect compartmentalized [Ca2+]i signals, which may explain some of the cellular defects related to ANO mutations.-Cabrita, I., Benedetto, R., Fonseca, A., Wanitchakool, P., Sirianant, L., Skryabin, B. V., Schenk, L. K., Pavenstädt, H., Schreiber, R., Kunzelmann, K. Differential effects of anoctamins on intracellular calcium signals.
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Affiliation(s)
- Inês Cabrita
- Physiological Institute, University of Regensburg, Regensburg, Germany;
| | - Roberta Benedetto
- Physiological Institute, University of Regensburg, Regensburg, Germany
| | - Ana Fonseca
- Physiological Institute, University of Regensburg, Regensburg, Germany
| | | | - Lalida Sirianant
- Physiological Institute, University of Regensburg, Regensburg, Germany
| | - Boris V Skryabin
- Department of Medicine (TRAM), University of Münster, Münster, Germany; and
| | - Laura K Schenk
- Department of Internal Medicine D, Universitätsklinikum Münster, Albert-Schweitzer-Campus, Münster, Germany
| | - Hermann Pavenstädt
- Department of Internal Medicine D, Universitätsklinikum Münster, Albert-Schweitzer-Campus, Münster, Germany
| | - Rainer Schreiber
- Physiological Institute, University of Regensburg, Regensburg, Germany
| | - Karl Kunzelmann
- Physiological Institute, University of Regensburg, Regensburg, Germany;
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Wanitchakool P, Ousingsawat J, Sirianant L, Cabrita I, Faria D, Schreiber R, Kunzelmann K. Cellular defects by deletion of ANO10 are due to deregulated local calcium signaling. Cell Signal 2016; 30:41-49. [PMID: 27838374 DOI: 10.1016/j.cellsig.2016.11.006] [Citation(s) in RCA: 36] [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: 09/27/2016] [Accepted: 11/07/2016] [Indexed: 12/20/2022]
Abstract
TMEM16K (ANO10) belongs to a family of ion channels and phospholipid scramblases. Mutations in ANO10 cause neurological and immunological defects, and abrogated ion transport. Here we show that Ano10 knockout in epithelial cells leads to defective ion transport, attenuated volume regulation and deranged Ca2+ signaling. Intestinal epithelial cells from Ano10 null mice are reduced in size and demonstrate an almost abolished spontaneous and TNFα-induced apoptosis. Similar defects were found in mouse peritoneal Ano10 null macrophages and in human THP1 macrophages with reduced ANO10 expression. A cell cycle dependent colocalization of Ano10 with acetylated tubulin, centrioles, and a submembranous tubulin containing compartment was observed in Fisher rat thyroid cells. Axs, the Drosophila ortholog of ANO10 is known for its role in mitotic spindle formation and association with the endoplasmic reticulum and Ca2+ signaling. We therefore propose that mutations in ANO10 cause cellular defects and genetic disorders through deranged local Ca2+ signaling.
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Affiliation(s)
- Podchanart Wanitchakool
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
| | - Jiraporn Ousingsawat
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
| | - Lalida Sirianant
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
| | - Inês Cabrita
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
| | - Diana Faria
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
| | - Rainer Schreiber
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
| | - Karl Kunzelmann
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany.
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16
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Ousingsawat J, Cabrita I, Wanitchakool P, Sirianant L, Krautwald S, Linkermann A, Schreiber R, Kunzelmann K. Ca 2+ signals, cell membrane disintegration, and activation of TMEM16F during necroptosis. Cell Mol Life Sci 2016; 74:173-181. [PMID: 27535660 DOI: 10.1007/s00018-016-2338-3] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [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: 02/17/2016] [Revised: 08/08/2016] [Accepted: 08/09/2016] [Indexed: 11/29/2022]
Abstract
Activated receptor-interacting protein kinase 3 (RIPK3) and mixed lineage kinase domain like (MLKL) are essential components of the necroptotic pathway. Phosphorylated MLKL (pMLKL) is thought to induce membrane leakage, leading to cell swelling and disintegration of the cell membrane. However, the molecular identity of the necroptotic membrane pore remains unclear, and the role of pMLKL for membrane permeabilization is currently disputed. We observed earlier that the phospholipid scramblase and ion channel TMEM16F/anoctamin 6 cause large membrane currents, cell swelling, and cell death when activated by a strong increase in intracellular Ca2+. We, therefore, asked whether TMEM16F is also central to necroptotic cell death and other cellular events during necroptosis. Necroptosis was induced by TNFα, smac mimetic, and Z-VAD (TSZ) in NIH3T3 fibroblasts and the four additional cell lines HT29, 16HBE, H441, and L929. Time-dependent changes in intracellular Ca2+, cell morphology, and membrane currents were recorded. TSZ induced a small and only transient oscillatory rise in intracellular Ca2+, which was paralleled by the activation of outwardly rectifying Cl- currents, which were typical for TMEM16F/ANO6. Ca2+ oscillations were due to Ca2+ release from endoplasmic reticulum, and were independent of extracellular Ca2+. The initial TSZ-induced cell swelling was followed by cell shrinkage. Using typical channel blockers and siRNA-knockdown, the Cl- currents were shown to be due to the activation of ANO6. However, the knockdown of ANO6 or inhibitors of ANO6 did not inhibit necroptotic cell death. The present data demonstrate the activation of ANO6 during necroptosis, which, however, is not essential for cell death.
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Affiliation(s)
- Jiraporn Ousingsawat
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Inês Cabrita
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Podchanart Wanitchakool
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Lalida Sirianant
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Stefan Krautwald
- Division of Nephrology and Hypertension, Christian-Albrechts-University, Kiel, Germany
| | - Andreas Linkermann
- Division of Nephrology and Hypertension, Christian-Albrechts-University, Kiel, Germany
| | - Rainer Schreiber
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany
| | - Karl Kunzelmann
- Institut für Physiologie, Universität Regensburg, Universitätsstraße 31, 93053, Regensburg, Germany.
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Muraru D, Addetia K, Veronesi F, Corsi C, Mor-Avi V, Yamat M, Weinert L, Lang R, Badano L, Faita F, Di Lascio N, Bruno R, Bianchini E, Ghiadoni L, Sicari R, Gemignani V, Angelis A, Ageli K, Ioakimidis N, Chrysohoou C, Agelakas A, Felekos I, Vaina S, Aznaourides K, Vlachopoulos C, Stefanadis C, Nemes A, Szolnoky G, Gavaller H, Gonczy A, Kemeny L, Forster T, Ramalho A, Placido R, Marta L, Menezes M, Magalhaes A, Cortez Dias N, Martins S, Almeida A, Pinto F, Nunes Diogo A, Botezatu CD, Enache R, Popescu B, Nastase O, Coman M, Ghiorghiu I, Calin A, Rosca M, Beladan C, Ginghina C, Grapsa J, Cabrita I, Durighel G, O'regan D, Dawson D, Nihoyannopoulos P, Pellicori P, Kallvikbacka-Bennett A, Zhang J, Lukaschuk E, Joseph A, Bourantas C, Loh H, Bragadeesh T, Clark A, Cleland J, Kallvikbacka-Bennett A, Pellicori P, Lomax S, Putzu P, Diercx R, Parsons S, Dicken B, Zhang J, Clark A, Cleland J, Vered Z, Adirevitz L, Dragu R, Blatt A, Karev E, Malca Y, Roytvarf A, Marek D, Sovova E, Berkova M, Cihalik C, Taborsky M, Lindqvist P, Tossavainen E, Soderberg S, Gonzales M, Gustavsson S, Henein M, Sonne C, Bott-Fluegel L, Hauck S, Lesevic H, Hadamitzky M, Wolf P, Kolb C, Bandera F, Pellegrino M, Generati G, Donghi V, Alfonzetti E, Castelvecchio S, Menicanti L, Guazzi M, Buchyte S, Rinkuniene D, Jurkevicius R, Smarz K, Zaborska B, Jaxa-Chamiec T, Maciejewski P, Budaj A, Santoro A, Federico Alvino F, Giovanni Antonelli G, Roberta Molle R, Matteo Bertini M, Stefano Lunghetti S, Sergio Mondillo S, Henri C, Magne J, Dulgheru R, Laaraibi S, Voilliot D, Kou S, Pierard L, Lancellotti P, Szulik M, Stabryla-Deska J, Kalinowski M, Sliwinska A, Szymala M, Lenarczyk R, Kalarus Z, Kukulski T, Yiangou K, Azina C, Yiangou A, Ioannides M, Chimonides S, Baysal S, Pirat B, Okyay K, Bal U, Muderrisoglu H, Popovic D, Ostojic M, Petrovic M, Vujisic-Tesic B, Arandjelovic A, Petrovic I, Banovic M, Popovic B, Vukcevic V, Damjanovic S, Velasco Del Castillo S, Onaindia Gandarias J, Arana Achaga X, Laraudogoitia Zaldumbide E, Rodriguez Sanchez I, Cacicedo De Bobadilla A, Romero Pereiro A, Aguirre Larracoechea U, Salinas T, Subinas A, Elzbieciak M, Wita K, Grabka M, Chmurawa J, Doruchowska A, Turski M, Filipecki A, Wybraniec M, Mizia-Stec K, Varho V, Karjalainen P, Lehtinen T, Airaksinen J, Ylitalo A, Kiviniemi T, Gargiulo P, Galderisi M, D' Amore C, Lo Iudice F, Savarese G, Casaretti L, Pellegrino A, Fabiani I, La Mura L, Perrone Filardi P, Kim JY, Chung W, Yu J, Choi Y, Park C, Youn H, Lee M, Nagy A, Manouras A, Gunyeli E, Gustafsson U, Shahgaldi K, Winter R, Johnsson J, Zagatina A, Krylova L, Zhuravskaya N, Vareldzyan Y, Tyurina T, Clitsenko O, Khalifa EA, Ashour Z, Elnagar W, Jung I, Seo H, Lee S, Lim D, Mizariene V, Verseckaite R, Janenaite J, Jonkaitiene R, Jurkevicius R, Sanchez Espino A, Bonaque Gonzalez J, Merchan Ortega G, Bolivar Herrera N, Ikuta I, Macancela Quinones J, Gomez Recio M, Silva Fazendas Adame PR, Caldeira D, Stuart B, Almeida S, Cruz I, Ferreira A, Freire G, Lopes L, Cotrim C, Pereira H, Mediratta A, Addetia K, Moss J, Nayak H, Yamat M, Weinert L, Mor-Avi V, Lang R, Al Amri I, Debonnaire P, Van Der Kley F, Schalij M, Bax J, Ajmone Marsan N, Delgado V, Schmidt FP, Gniewosz T, Jabs A, Munzel T, Jansen T, Kaempfner D, Hink U, Von Bardeleben R, Jose J, George O, Joseph G, Jose J, Adawi S, Najjar R, Ahronson D, Shiran A, Van Riel A, Boerlage - Van Dijk K, De Bruin - Bon H, Araki M, Meregalli P, Koch K, Vis M, Mulder B, Baan J, Bouma B, Marciniak A, Elton D, Glover K, Campbell I, Sharma R, Batalha S, Lourenco C, Oliveira Da Silva C, Manouras A, Shahgaldi K, Caballero L, Garcia-Lara J, Gonzalez-Carrillo J, Oliva M, Saura D, Garcia-Navarro M, Espinosa M, Pinar E, Valdes M, De La Morena G, Barreiro Perez M, Lopez Perez M, Roy D, Brecker S, Sharma R, Venkateshvaran A, Dash PK, Sola S, Barooah B, Govind SC, Winter R, Shahgaldi K, Brodin LA, Manouras A, Saura Espin D, Caballero Jimenez L, Gonzalez Carrillo J, Oliva Sandoval M, Lopez Ruiz M, Garcia Navarro M, Espinosa Garcia M, Valdes Chavarri M, De La Morena Valenzuela G, Gatti G, Dell'angela L, Pinamonti B, Benussi B, Sinagra G, Pappalardo A, Hernandez V, Saavedra J, Gonzalez A, Iglesias P, Civantos S, Guijarro G, Monereo S, Ikeda M, Toh N, Oe H, Tanabe Y, Watanabe N, Ito H, Ciampi Q, Cortigiani L, Pratali L, Rigo F, Villari B, Picano E, Sicari R, Yoon J, Sohn J, Kim Y, Chang H, Hong G, Kim T, Ha J, Choi B, Rim S, Choi E, Tibazarwa K, Sliwa K, Wonkam A, Mayosi B, Oryshchyn N, Ivaniv Y, Pavlyk S, Lourenco MR, Azevedo O, Moutinho J, Nogueira I, Fernandes M, Pereira V, Quelhas I, Lourenco A, Sunbul M, Tigen K, Karaahmet T, Dundar C, Ozben B, Guler A, Cincin A, Bulut M, Sari I, Basaran Y, Baydar O, Kadriye Kilickesmez K, Ugur Coskun U, Polat Canbolat P, Veysel Oktay V, Umit Yasar Sinan U, Okay Abaci O, Cuneyt Kocas C, Sinan Uner S, Serdar Kucukoglu S, Zaroui A, Mourali M, Ben Said R, Asmi M, Aloui H, Kaabachi N, Mechmeche R, Saberniak J, Hasselberg N, Borgquist R, Platonov P, Holst A, Edvardsen T, Haugaa K, Lourenco MR, Azevedo O, Nogueira I, Moutinho J, Fernandes M, Pereira V, Quelhas I, Lourenco A, Eran A, Yueksel D, Er F, Gassanov N, Rosenkranz S, Baldus S, Guedelhoefer H, Faust M, Caglayan E, Matveeva N, Nartsissova G, Chernjavskij A, Ippolito R, De Palma D, Muscariello R, Santoro C, Raia R, Schiano-Lomoriello V, Gargiulo F, Galderisi M, Lipari P, Bonapace S, Zenari L, Valbusa F, Rossi A, Lanzoni L, Canali G, Molon G, Campopiano E, Barbieri E, Ikonomidis I, Varoudi M, Papadavid E, Theodoropoulos K, Papadakis I, Pavlidis G, Triantafyllidi H, Anastasiou - Nana M, Rigopoulos D, Lekakis J, Sunbul M, Tigen K, Ozen G, Durmus E, Kivrak T, Cincin A, Ozben B, Atas H, Direskeneli H, Basaran Y, Stevanovic A, Dekleva M, Trajic S, Paunovic N, Simic A, Khan S, Mushemi-Blake S, Jouhra F, Dennes W, Monaghan M, Melikian N, Shah A, Maceira Gonzalez AM, Lopez-Lereu M, Monmeneu J, Igual B, Estornell J, Boraita A, Kosmala W, Rojek A, Bialy D, Mysiak A, Przewlocka-Kosmala M, Popescu I, Mancas S, Mornos C, Serbescu I, Ionescu G, Ionac A, Gaudron P, Niemann M, Herrmann S, Hu K, Liu D, Wojciech K, Frantz S, Bijnens B, Ertl G, Weidemann F, Maceira Gonzalez AM, Cosin-Sales J, Ruvira J, Diago J, Aguilar J, Igual B, Lopez-Lereu M, Monmeneu J, Estornell J, Cruz C, Pinho T, Madureira A, Lebreiro A, Dias C, Ramos I, Silva Cardoso J, Julia Maciel M, De Meester P, Van De Bruaene A, Herijgers P, Voigt JU, Budts W, Franzoso F, Voser E, Wohlmut C, Kellenberger C, Valsangiacomo Buechel E, Carrero C, Benger J, Parcerisa M, Falconi M, Oberti P, Granja M, Cagide A, Del Pasqua A, Secinaro A, Antonelli G, Iacomino M, Toscano A, Chinali M, Esposito C, Carotti A, Pongiglione G, Rinelli G, Youssef Moustafa A, Al Murayeh M, Al Masswary A, Al Sheikh K, Moselhy M, Dardir M, Deising J, Butz T, Suermeci G, Liebeton J, Wennemann R, Tzikas S, Van Bracht M, Prull M, Trappe HJ, Martin Hidalgo M, Delgado Ortega M, Ruiz Ortiz M, Mesa Rubio D, Carrasco Avalos F, Seoane Garcia T, Pan Alvarez-Ossorio M, Lopez Aguilera J, Puentes Chiachio M, Suarez De Lezo Cruz Conde J, Petrovic MT, Giga V, Stepanovic J, Tesic M, Jovanovic I, Djordjevic-Dikic A, Generati G, Pellegrino M, Bandera F, Donghi V, Alfonzetti E, Guazzi M, Piatkowski R, Kochanowski J, Scislo P, Opolski G, Zagatina A, Zhuravskaya N, Krylova L, Vareldzhyan Y, Tyurina T, Clitsenko O, Bombardini T, Gherardi S, Leone O, Picano E, Michelotto E, Ciccarone A, Tarantino N, Ostuni V, Rubino M, Genco W, Santoro G, Carretta D, Romito R, Colonna P, Cameli M, Lunghetti S, Lisi M, Curci V, Cameli P, Focardi M, Favilli R, Galderisi M, Mondillo S, Hoffmann R, Barletta G, Von Bardeleben S, Kasprzak J, Greis C, Vanoverschelde J, Becher H, Machida T, Izumo M, Suzuki K, Kaimijima R, Mizukoshi K, Manabe-Uematsu M, Takai M, Harada T, Akashi Y, Martin Garcia A, Arribas-Jimenez A, Cruz-Gonzalez I, Nieto F, Iscar A, Merchan S, Martin-Luengo C, Brecht A, Theres L, Spethmann S, Dreger H, Baumann G, Knebel F, Jasaityte R, Heyde B, Rademakers F, Claus P, D'hooge J, Lervik Nilsen LC, Lund J, Brekke B, Stoylen A, Giraldeau G, Duchateau N, Gabrielli L, Penela D, Evertz R, Mont L, Brugada J, Berruezo A, Bijnens B, Sitges M, Kordybach M, Kowalski M, Hoffman P, Pilichowska E, Zaborska B, Baran J, Kulakowski P, Budaj A, Wahi S, Vollbon W, Leano R, Thomas A, Bricknell K, Holland D, Napier S, Stanton T, Teferici D, Qirko S, Petrela E, Dibra A, Bajraktari G, Bara P, Sanchis Ruiz L, Gabrielli L, Andrea R, Falces C, Duchateau N, Perez-Villa F, Bijnens B, Sitges M, Sulemane S, Panoulas V, Bratsas A, Tam F, Nihoyannopoulos P, Abduch M, Alencar A, Coracin F, Barban A, Saboya R, Dulley F, Mathias W, Vieira M, Buccheri S, Mangiafico S, Arcidiacono A, Bottari V, Leggio S, Tamburino C, Monte IP, Cruz C, Lebreiro A, Pinho T, Dias C, Silva Cardoso J, Julia Maciel M, Spitzer E, Beitzke D, Kaneider A, Pavo N, Gottsauner-Wolf M, Wolf F, Loewe C, Mushtaq S, Andreini D, Pontone G, Bertella E, Conte E, Baggiano A, Annoni A, Cortinovis S, Fiorentini C, Pepi M, Gustafsson M, Alehagen U, Dahlstrom U, Johansson P, Faden G, Faggiano P, Albertini L, Reverberi C, Gaibazzi N, Taylor RJ, Moody W, Umar F, Edwards N, Townend J, Steeds R, Leyva F, Mihaila S, Muraru D, Piasentini E, Peluso D, Casablanca S, Naso P, Puma L, Iliceto S, Vinereanu D, Badano L, Ciciarello FL, Agati L, Cimino S, De Luca L, Petronilli V, Fedele F, Tsverava M. Poster Session Saturday 14 December - AM: 14/12/2013, 08:30-12:30 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hugues T, Lacroix-Hugues V, Yaici K, Gibelin P, Cabrita I, Pires S, Nunes A, Sousa C, Cortez-Dias N, Pinto F, Hrynkiewicz-Szymanska A, Braksator W, Szymanski F, Chmielewski M, Dluzniewski M, Alonso Fernandez P, Andres Lahuerta A, Miro Palau V, Buendia Fuentes F, Igual Munoz B, Osa Saez A, Quesada Carmona A, Tejada Ponce D, Munoz B, Salvador Sanz A, Imamura S, Hirata KH, Kubo T, Orii M, Tanimono T, Takemoto K, Ino Y, Yamaguchi T, Imanishi T, Akasaka T, Kinoshita T, Asai T, Suzuki T, Krestjyaninov M, Ruzov V, Imamura S, Hirata KH, Kubo T, Orii M, Tanimoto T, Yamano T, Ino Y, Yamaguchi T, Imanishi T, Akasaka T, Junca Puig G, Sistach EF, Delgado Ramis L, Lopez Ayerbe J, Vallejo Camazon N, Gual Capllonch F, Teis Soley A, Camara Rosell M, Ruyra Baliarda X, Bayes-Genis A, Alonso fernandez P, Igual Munoz B, Andres Lahuerta A, Maceira Gonzalez A, Hernandez C, Bel Minguez A, Miro Palau V, Munoz Igual B, Montero Argudo A, Salvador Sanz A, Antit S, fennira S, Zairi I, Kamoun S, Kraiem S, Matsuyama A, Hirata KH, Kubo T, Orii M, Takemoto K, Tanimoto T, Yamano T, Ino Y, Imanishi T, Akasaka T, Van De Heyning C, Magne J, Pierard L, Davin L, Bruyere P, De Maeyer C, Paelinck B, Vrints C, Lancellotti P, Wang J, fang F, Liu M, Liang Y, Yu C, Lam Y, Kenny C, Monaghan M, Ercan S, Kervancioglu S, Davutoglu V, Cakici M, Ozkur A, Oylumlu M, Sari I, Sikora-Puz A, Mizia M, Gieszczyk-Strozik K, Matyjaszczyk-Zbieg K, Haberka M, Mizia-Stec K, Gasior Z, Wos S, Deja M, Jasinski M, Enescu O, florescu M, Mihalcea D, Rimbas R, Cinteza M, Vinereanu D. Club 35 Poster Session Wednesday 5 December * Right ventricular systolic function. Eur Heart J Cardiovasc Imaging 2012. [DOI: 10.1093/ehjci/jes247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Totzeck M, Hendgen-Cotta U, Rammos C, Petrescu A, Stock P, Goedecke A, Shiva S, Kelm M, Rassaf T, Duerr GD, Heuft T, Klaas T, Suchan G, Roell W, Zimmer A, Welz A, Fleischmann BK, Dewald O, Luedde M, Carter N, Lutz M, Sosna J, Jacoby C, Floegel U, Hippe HJ, Adam D, Heikenwaelder M, Frey N, Sobierajski J, Luedicke P, Hendgen-Cotta U, Lue H, Totzeck M, Dewor M, Kelm M, Bernhagen J, Rassaf T, Cortez-Dias N, Costa M, Carrilho-Ferreira P, Silva D, Jorge C, Robalo Martins S, Fiuza M, Pinto FJ, Nunes Diogo A, Enguita FJ, Tsiachris D, Tsioufis C, Kasiakogias A, Flessas D, Antonakis V, Kintis K, Giakoumis M, Hatzigiannis P, Katsimichas T, Stefanadis C, Andrikou E, Tsioufis C, Thomopoulos C, Kasiakogias A, Tzamou V, Andrikou I, Bafakis I, Lioni L, Kintis K, Stefanadis C, Lazaros G, Tsiachris D, Tsioufis C, Vlachopoulos C, Brili S, Chrysohoou C, Tousoulis D, Stefanadis C, Santos De Sousa CI, Pires S, Nunes A, Cortez Dias N, Belo A, Cabrita I, Pinto FJ, Benova T, Radosinska J, Viczenczova C, Bacova B, Knezl V, Dosenko V, Navarova J, Zeman M, Tribulova N, Maceira Gonzalez AM, Cosin Sales J, Igual B, Ruvira J, Diago JL, Aguilar J, Lopez Lereu MP, Monmeneu JV, Estornell J, Choi JC, Cha KS, Lee HW, Yun EY, Ahn JH, Oh JH, Choi JH, Lee HC, Hong TJ, Manzano Fernandez S, Lopez-Cuenca A, Januzzi JL, Mateo-Martinez A, Sanchez-Martinez M, Parra-Pallares S, Orenes-Pinero E, Romero-Aniorte AI, Valdes-Chavarri M, Marin F, Bouzas Mosquera A, Peteiro J, Broullon FJ, Alvarez Garcia N, Couto Mallon D, Bouzas Zubeldia B, Martinez Ruiz D, Yanez Wonenburger JC, Fabregas Casal R, Castro Beiras A, Backus BE, Six AJ, Cullen L, Greenslade J, Than M, Kameyama T, Sato T, Noto T, Nakadate T, Ueno H, Yamada K, Inoue H, Albrecht-Kuepper B, Kretschmer A, Kast R, Baerfacker L, Schaefer S, Kolkhof P, Andersson C, Kober L, Christensen SB, Nguyen CD, Nielsen MB, Olsen AMS, Gislason GH, Torp-Pedersen C, Shigekiyo M, Harada K, Lieu H, Neutel J, Maddock S, Goldsmith S, Koren M, Antwerp BV, Burnett J, Christensen SB, Charlot MG, Madsen M, Andersson C, Kober L, Gustafsson F, Torp-Pedersen C, Gislason GH, Cavusoglu Y, Mert KU, Nadir A, Mutlu F, Gencer E, Ulus T, Birdane A, Lim HS, Tahk SJ, Yang HM, Kim JW, Seo KW, Choi BJ, Choi SY, Yoon MH, Hwang GS, Shin JH, Russ MA, Wackerl C, Hochadel M, Brachmann J, Mudra H, Zeymer U, Weber MA, Menozzi A, Saia F, Valgimigli M, Belotti LM, Casella G, Manari A, Cremonesi A, Piovaccari G, Guastaroba P, Marzocchi A, Kuramitsu S, Iwabuchi M, Haraguchi T, Domei T, Nagae A, Hyodo M, Takabatake Y, Yokoi H, Toyota F, Nobuyoshi M, Kaitani K, Hanazawa K, Izumi C, Nakagawa Y, Ando K, Arita T, Nobuyoshi M, Shizuta S, Kimura T, Isshiuki T, Trucco ME, Tolosana JM, Castel MA, Borras R, Sitges M, Khatib M, Arbelo E, Berruezo A, Brugada J, Mont L, Romanov A, Pokushalov E, Prokhorova D, Chernyavskiy A, Shabanov V, Goscinska-Bis K, Bis J, Bochenek A, Gersak B, Karaskov A, Linde C, Daubert C, Bergemann TL, Abraham WT, Gold MR, Van Boven N, Bogaard K, Ruiter JH, Kimman GP, Kardys I, Umans VA, Cipriani M, Lunati M, Landolina M, Vittori C, Vargiu S, Ghio S, Petracci B, Campo C, Bisetti S, Frigerio M, Bongiorni MG, Soldati E, Segreti L, Zucchelli G, Di Cori A, De Lucia R, Viani S, Paperini L, Boem A, Levorato D, Kutarski A, Malecka B, Zabek A, Czajkowski M, Chudzik M, Kutarski A, Mitkowski P, Maciag A, Kempa M, Golzio PG, Fanelli A, Vinci M, Pelissero E, Morello M, Grosso Marra W, Gaita F, Kutarski A, Czajkowski M, Pietura R, Golzio PG, Vinci M, Pelissero E, Fanelli A, Ferraris F, Gaita F, Cuypers JAAE, Menting ME, Opic P, Utens EMWJ, Van Domburg RT, Helbing WA, Witsenburg M, Van Den Bosch AE, Bogers AJJC, Roos-Hesselink JW, Van Der Linde D, Takkenberg JJM, Rizopoulos D, Heuvelman HJ, Witsenburg M, Budts W, Van Dijk APJ, Bogers AJJC, Oechslin EN, Roos-Hesselink JW, Diller GP, Kempny A, Liodakis E, Alonso-Gonzalez R, Orwat S, Dimopoulos K, Swan L, Li W, Gatzoulis MA, Baumgartner H, Andrade AC, Voges I, Jerosch-Herold M, Pham M, Hart C, Hansen T, Kramer HH, Rickers C, Kempny A, Wustmann K, Borgia F, Dimopoulos K, Uebing A, Piorkowski A, Yacoub MH, Gatzoulis MA, Swan L, Diller GP, Mueller J, Weber R, Pringsheim M, Hoerer J, Hess J, Hager A, Hu K, Liu D, Niemann M, Herrmann S, Cikes M, Stoerk S, Knob S, Ertl G, Bijnens B, Weidemann F, Mornos C, Cozma D, Dragulescu D, Ionac A, Mornos A, Petrescu L, Mingo S, Ruiz Bautista L, Monivas Palomero V, Prados C, Maiz L, Giron R, Martinez M, Cavero Gibanel MA, Segovia J, Pulpon L, Kato H, Kubota S, Takasawa Y, Kumamoto T, Iacoviello M, Puzzovivo A, Forleo C, Lattarulo MS, Monitillo F, Antoncecchi V, Malerba G, Marangelli V, Favale S, Ruiz Bautista L, Mingo S, Monivas V, Segovia J, Prados C, Maiz L, Giron R, Martinez MT, Gonzalez Estecha M, Alonso Pulpon LA, Ren B, De Groot-De Laat L, Mcghie J, Vletter W, Ten Cate F, Geleijnse M, Looi JL, Lam YY, Yu CM, Lee PW, Apor A, Sax B, Huttl T, Nagy A, Kovacs A, Merkely B, Vecera J, Bartunek J, Vanderheyden M, Mertens P, Bodea O, Penicka M, Biaggi P, Gaemperli O, Corti R, Gruenenfelder J, Felix C, Bettex D, Datta S, Jenni R, Tanner F, Herzog B, Fattouch K, Murana G, Castrovinci S, Sampognaro R, Bertolino EC, Caccamo G, Ruvolo G, Speziale G, Lancellotti P. Saturday, 25 August 2012. Eur Heart J 2012. [DOI: 10.1093/eurheartj/ehs280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Lopes MH, Freire M, Galhetas M, Gulyurtlu I, Cabrita I. Leachability of automotive shredder residues burned in a fluidized bed system. Waste Manag 2009; 29:1760-1765. [PMID: 19131234 DOI: 10.1016/j.wasman.2008.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2008] [Accepted: 11/13/2008] [Indexed: 05/27/2023]
Abstract
This paper presents the results of the study of a combustible fraction of automotive shredder residues (CASRs) and the corresponding ashes generated by combustion on a fluidized bed pilot with the aim to understand the influence of thermal treatment regarding properties for final disposal, such as landfilling. The chemical composition was evaluated and the leachability behaviour of ashes and CASR was investigated using the three more commonly used tests: the European Standard EN 12457, the US TCLP-EPA 1311 and the Dutch availability test EA NEN 7371. Different results were obtained depending on the specific conditions of the methods employed. It was found that both the CASR and the ashes contained large amounts of toxic metals and other undesirable elements, such as Cl and S. For the CASR, in addition to the leachability of organic matter above the limit set for hazardous materials, the release of heavy metals, either under alkaline and acidic conditions was significant, revealing the serious risks associated to the landfilling practices still being undertaken worldwide. Release of organic matter from ashes was insignificant, but solubility of sulphates increased and chlorides exceed the hazardous limits in the case of fly ashes. Toxic metals were found to leach from the ashes only under acidic conditions, except Pb and Cu which also leached from finer ashes at alkaline pH. Cr also leached from ashes at alkaline pH values. Both the Dutch availability and TCLP revealed much higher leaching intensities than the European Standard due to the acidity of leachants. However, it was found that ashes may be more resistant to acidification because they exhibit much higher acid neutralization capacity (ANC) than the untreated CASR. The study undertaken shows that thermal valorisation of the combustible fraction of ASR may avoid the risks associated with their landfilling; however, care has to be taken with the ashes because they also behave as hazardous residues. Although, the mass reduction provided by thermal treatment may make landfilling less expensive, a more profitable reutilization of the ashes should be developed.
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Affiliation(s)
- M H Lopes
- INETI/DEECA, Estrada do Paço do Lumiar, 22, Ed. J, 1649-038 Lisboa, Portugal.
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Helena Lopes M, Abelha P, Lapa N, Oliveira JS, Cabrita I, Gulyurtlu I. The behaviour of ashes and heavy metals during the co-combustion of sewage sludges in a fluidised bed. Waste Manag 2003; 23:859-870. [PMID: 14583249 DOI: 10.1016/s0956-053x(03)00025-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Co-combustion tests of dry sewage sludges with coal were performed in a pilot bubbling FBC aiming at the characterization of ashes and determining the behaviour of heavy metals in the process. The tests showed compliance with the regulatory levels as far as heavy metal emissions were concerned. The bottom ashes, which accounted for about 70% of the total ash production, were obtained in a granular form, with diameters ranging from 0.5 to 4 mm. The heavy metals were distributed in ashes obtained from different locations of the installation and their concentrations were found to vary depending on the location of capture. The increase in heavy metals content in bottom ashes was not found to lead to higher leachability and ecotoxicity compared to sewage sludges, suggesting that there could be opportunities for their further use. Mercury suffered vaporisation inside the reactor, thus leaving bottom ashes free of contamination by it. However, there was observed a strong retention of mercury in cyclone ashes due to the presence of unburned carbon which probably acted as an adsorbent. The effluent mercury was also found to be mostly associated with the particulate fraction, being less than 20% emitted in gaseous forms. The results suggested that the combustion of the sewage sludge could successfully be carried out and the amount of unburned carbon leaving the combustor but captured in cyclone was large enough to ensure substantial retention of mercury at low temperatures, hence could contribute to an improvement of the mercury release which still remains an issue of great concern to resolve during combustion of waste materials.
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Affiliation(s)
- M Helena Lopes
- INETI-DEECA, Estrada do Paço do Lumiar, 22, 1649 -038 Lisboa, Portugal.
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