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Tizoxanide Antiviral Activity on Dengue Virus Replication. Viruses 2023; 15:v15030696. [PMID: 36992406 PMCID: PMC10055917 DOI: 10.3390/v15030696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Accepted: 03/04/2023] [Indexed: 03/11/2023] Open
Abstract
Dengue virus is an important circulating arbovirus in Brazil responsible for high morbidity and mortality worldwide, representing a huge economic and social burden, in addition to affecting public health. In this study, the biological activity, toxicity, and antiviral activity against dengue virus type 2 (DENV-2) of tizoxanide (TIZ) was evaluated in Vero cell culture. TIZ has a broad spectrum of action in inhibiting different pathogens, including bacteria, protozoa, and viruses. Cells were infected for 1 h with DENV-2 and then treated for 24 h with different concentrations of the drug. The quantification of viral production indicated the antiviral activity of TIZ. The protein profiles in infected Vero cells treated and not treated with TIZ were analyzed using the label-free quantitative proteomic approach. TIZ was able to inhibit virus replication mainly intracellularly after DENV-2 penetration and before the complete replication of the viral genome. Additionally, the study of the protein profile of infected not-treated and infected-treated Vero cells showed that TIZ interferes with cellular processes such as intracellular trafficking and vesicle-mediated transport and post-translational modifications when added after infection. Our results also point to the activation of immune response genes that would eventually lead to a decrease of DENV-2 production. TIZ is a promising therapeutic molecule for the treatment of DENV-2 infections.
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Bettaieb L, Brulé M, Chomy A, Diedro M, Fruit M, Happernegg E, Heni L, Horochowska A, Housseini M, Klouyovo K, Laratte A, Leroy A, Lewandowski P, Louvieaux J, Moitié A, Tellier R, Titah S, Vanauberg D, Woesteland F, Prevarskaya N, Lehen’kyi V. Ca 2+ Signaling and Its Potential Targeting in Pancreatic Ductal Carcinoma. Cancers (Basel) 2021; 13:3085. [PMID: 34205590 PMCID: PMC8235326 DOI: 10.3390/cancers13123085] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/02/2021] [Accepted: 06/13/2021] [Indexed: 01/05/2023] Open
Abstract
Pancreatic cancer (PC) is a major cause of cancer-associated mortality in Western countries (and estimated to be the second cause of cancer deaths by 2030). The main form of PC is pancreatic adenocarcinoma, which is the fourth most common cause of cancer-related death, and this situation has remained virtually unchanged for several decades. Pancreatic ductal adenocarcinoma (PDAC) is inherently linked to the unique physiology and microenvironment of the exocrine pancreas, such as pH, mechanical stress, and hypoxia. Of them, calcium (Ca2+) signals, being pivotal molecular devices in sensing and integrating signals from the microenvironment, are emerging to be particularly relevant in cancer. Mutations or aberrant expression of key proteins that control Ca2+ levels can cause deregulation of Ca2+-dependent effectors that control signaling pathways determining the cells' behavior in a way that promotes pathophysiological cancer hallmarks, such as enhanced proliferation, survival and invasion. So far, it is essentially unknown how the cancer-associated Ca2+ signaling is regulated within the characteristic landscape of PDAC. This work provides a complete overview of the Ca2+ signaling and its main players in PDAC. Special consideration is given to the Ca2+ signaling as a potential target in PDAC treatment and its role in drug resistance.
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Affiliation(s)
- Louay Bettaieb
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Maxime Brulé
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Axel Chomy
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Mel Diedro
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Malory Fruit
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Eloise Happernegg
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Leila Heni
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Anaïs Horochowska
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Mahya Housseini
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Kekely Klouyovo
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Agathe Laratte
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Alice Leroy
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Paul Lewandowski
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Joséphine Louvieaux
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Amélie Moitié
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Rémi Tellier
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Sofia Titah
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Dimitri Vanauberg
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Flavie Woesteland
- Option Biology, Master Biology-Health, Faculty of Medicine Henry Warembourg, University of Lille, 59120 Loos, France; (L.B.); (M.B.); (A.C.); (M.D.); (M.F.); (E.H.); (L.H.); (A.H.); (M.H.); (K.K.); (A.L.); (A.L.); (P.L.); (J.L.); (A.M.); (R.T.); (S.T.); (D.V.); (F.W.)
| | - Natalia Prevarskaya
- Laboratory of Cell Physiology, INSERM U1003, Laboratory of Excellence Ion Channels Science and Therapeutics, Department of Biology, Faculty of Science and Technologies, University of Lille, 59650 Villeneuve d’Ascq, France;
- University Lille, Inserm, U1003-PHYCEL-Physiologie Cellulaire, F-59000 Lille, France
| | - V’yacheslav Lehen’kyi
- Laboratory of Cell Physiology, INSERM U1003, Laboratory of Excellence Ion Channels Science and Therapeutics, Department of Biology, Faculty of Science and Technologies, University of Lille, 59650 Villeneuve d’Ascq, France;
- University Lille, Inserm, U1003-PHYCEL-Physiologie Cellulaire, F-59000 Lille, France
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3
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Hagelkruys A, Wirnsberger G, Stadlmann J, Wöhner M, Horrer M, Vilagos B, Jonsson G, Kogler M, Tortola L, Novatchkova M, Bönelt P, Hoffmann D, Koglgruber R, Steffen U, Schett G, Busslinger M, Bergthaler A, Klein C, Penninger JM. A crucial role for Jagunal homolog 1 in humoral immunity and antibody glycosylation in mice and humans. J Exp Med 2021; 218:e20200559. [PMID: 32930709 PMCID: PMC7953624 DOI: 10.1084/jem.20200559] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 07/17/2020] [Accepted: 08/18/2020] [Indexed: 12/28/2022] Open
Abstract
Jagunal homolog 1 (JAGN1) has been identified as a critical regulator of neutrophil biology in mutant mice and rare-disease patients carrying JAGN1 mutations. Here, we report that Jagn1 deficiency results in alterations in the endoplasmic reticulum (ER) of antibody-producing cells as well as decreased antibody production and secretion. Consequently, mice lacking Jagn1 in B cells exhibit reduced serum immunoglobulin (Ig) levels at steady state and fail to mount an efficient humoral immune response upon immunization with specific antigens or when challenged with viral infections. We also demonstrate that Jagn1 deficiency in B cells results in aberrant IgG N-glycosylation leading to enhanced Fc receptor binding. Jagn1 deficiency in particular affects fucosylation of IgG subtypes in mice as well as rare-disease patients with loss-of-function mutations in JAGN1. Moreover, we show that ER stress affects antibody glycosylation. Our data uncover a novel and key role for JAGN1 and ER stress in antibody glycosylation and humoral immunity in mice and humans.
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Affiliation(s)
- Astrid Hagelkruys
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
| | - Gerald Wirnsberger
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
- Apeiron Biologics AG, Vienna, Austria
| | - Johannes Stadlmann
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
- Institute of Biochemistry, University of Natural Resource and Life Sciences, Vienna, Austria
| | - Miriam Wöhner
- Research Institute of Molecular Pathology, Vienna Biocenter, Vienna, Austria
| | - Marion Horrer
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
| | - Bojan Vilagos
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Gustav Jonsson
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
| | - Melanie Kogler
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
| | - Luigi Tortola
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
- Institute of Molecular Health Sciences, ETH Zurich, Zurich, Switzerland
| | - Maria Novatchkova
- Research Institute of Molecular Pathology, Vienna Biocenter, Vienna, Austria
| | - Peter Bönelt
- Research Institute of Molecular Pathology, Vienna Biocenter, Vienna, Austria
| | - David Hoffmann
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
| | - Rubina Koglgruber
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
| | - Ulrike Steffen
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Georg Schett
- Department of Internal Medicine 3-Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Meinrad Busslinger
- Research Institute of Molecular Pathology, Vienna Biocenter, Vienna, Austria
| | - Andreas Bergthaler
- CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria
| | - Christoph Klein
- Department of Pediatrics, Dr. von Hauner Children’s Hospital, Ludwig Maximilians University, Munich, Germany
| | - Josef M. Penninger
- Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Vienna, Austria
- Department of Medical Genetics, Life Science Institute, University of British Columbia, Vancouver, Canada
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4
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Liu X, Wang D, Yang W, Wu X. Oxymatrine exerts anti-fibrotic effects in a rat model of hepatic fibrosis by suppressing endoplasmic reticulum stress. J Int Med Res 2020; 48:300060520961681. [PMID: 33044865 PMCID: PMC7556176 DOI: 10.1177/0300060520961681] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective This study evaluated the anti-fibrotic effects of oxymatrine and the role of endoplasmic reticulum (ER) stress in hepatic fibrosis (HF) in animal models. Methods The HF rat model was established by exposure to NaAsO2, followed by treatment with oxymatrine. Biomarkers of HF and ER stress were measured. The difference in protein expression between groups was evaluated using isobaric tag for relative and absolute quantification (iTRAQ) analysis. The mechanism by which oxymatrine modulated ER stress to alleviate arsenic-induced HF was evaluated using LX2 hepatic stellate cells in vitro. Results The rat model mimicked the pathological and physical phenotypes of HF including ER stress, oxidative stress, impaired liver function, and fibrosis. Treatment with oxymatrine suppressed these responses. Moreover, apoptosis, inflammation, and hepatic stellate cell activation were also inhibited by oxymatrine treatment. The differentially expressed proteins and pathways related to ER stress were identified in the HF and oxymatrine-treated groups via iTRAQ analysis combined with liquid chromatography–mass spectrometry. LX2 cells were activated by NaAsO2in vitro. Meanwhile, oxymatrine suppressed the activation of LX2 cells by alleviating ER stress and regulating cellular calcium homeostasis. Conclusions Oxymatrine could reverse NaAsO2-induced HF by alleviating ER stress.
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Affiliation(s)
- Xiaodong Liu
- Department of Pharmacy, Second Affiliated Hospital of Mudanjiang Medical University, Mudanjiang, China
| | - Dong Wang
- Department of Medical Comprehensive, Second Affiliated Hospital of Mudanjiang Medical University, Mudanjiang, China
| | - Wenping Yang
- Department of Medical Comprehensive, Second Affiliated Hospital of Mudanjiang Medical University, Mudanjiang, China
| | - Xiaomeng Wu
- Department of Pharmacy, Second Affiliated Hospital of Mudanjiang Medical University, Mudanjiang, China
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5
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Chen J, Sitsel A, Benoy V, Sepúlveda MR, Vangheluwe P. Primary Active Ca 2+ Transport Systems in Health and Disease. Cold Spring Harb Perspect Biol 2020; 12:cshperspect.a035113. [PMID: 31501194 DOI: 10.1101/cshperspect.a035113] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Calcium ions (Ca2+) are prominent cell signaling effectors that regulate a wide variety of cellular processes. Among the different players in Ca2+ homeostasis, primary active Ca2+ transporters are responsible for keeping low basal Ca2+ levels in the cytosol while establishing steep Ca2+ gradients across intracellular membranes or the plasma membrane. This review summarizes our current knowledge on the three types of primary active Ca2+-ATPases: the sarco(endo)plasmic reticulum Ca2+-ATPase (SERCA) pumps, the secretory pathway Ca2+- ATPase (SPCA) isoforms, and the plasma membrane Ca2+-ATPase (PMCA) Ca2+-transporters. We first discuss the Ca2+ transport mechanism of SERCA1a, which serves as a reference to describe the Ca2+ transport of other Ca2+ pumps. We further highlight the common and unique features of each isoform and review their structure-function relationship, expression pattern, regulatory mechanisms, and specific physiological roles. Finally, we discuss the increasing genetic and in vivo evidence that links the dysfunction of specific Ca2+-ATPase isoforms to a broad range of human pathologies, and highlight emerging therapeutic strategies that target Ca2+ pumps.
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Affiliation(s)
- Jialin Chen
- Laboratory of Cellular Transport Systems, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium
| | - Aljona Sitsel
- Laboratory of Cellular Transport Systems, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium
| | - Veronick Benoy
- Laboratory of Cellular Transport Systems, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium
| | - M Rosario Sepúlveda
- Department of Cell Biology, Faculty of Sciences, University of Granada, 18071 Granada, Spain
| | - Peter Vangheluwe
- Laboratory of Cellular Transport Systems, Department of Cellular and Molecular Medicine, KU Leuven, 3000 Leuven, Belgium
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6
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Dolfini D, Minuzzo M, Sertic S, Mantovani R. NF-YA overexpression protects from glutamine deprivation. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2019; 1867:118571. [PMID: 31706909 DOI: 10.1016/j.bbamcr.2019.118571] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 09/20/2019] [Accepted: 10/03/2019] [Indexed: 12/20/2022]
Abstract
The heterotrimeric transcription factor NF-Y binds to CCAAT boxes of genes of glutamine metabolism. We set out to study the role of the regulatory NF-YA subunit in this pathway. We produced U2OS and A549 clones stably overexpressing -OE- the two splicing isoforms of NF-YA. NF-YA OE cells show normal growth and colony formation rates, but they become resistant to cell death upon glutamine deprivation. Increased mRNA and protein expression of the key biosynthetic enzyme GLUL in U2OS entails increased production of endogenous glutamine upon deprivation. The use of GLUL inhibitors dampens the NF-YA-mediated effect. NF-YA OE prevents activation of the pro-apoptotic transcription factor CHOP/DDIT3. Elevated basal levels of SERCA1/2, coding for the molecular target of Thapsigargin, correlate with resistance of NF-YA OE cells to the drug. The work represents a proof-of-principle that elevated levels of NF-YA, as found in some tumor types, helps altering cancer metabolic pathways.
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Affiliation(s)
- Diletta Dolfini
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy.
| | - Mario Minuzzo
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy
| | - Sarah Sertic
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy
| | - Roberto Mantovani
- Dipartimento di Bioscienze, Università degli Studi di Milano, Via Celoria 26, 20133 Milano, Italy.
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7
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McDonnell SJ, Spiller DG, White MRH, Prior IA, Paraoan L. ER stress-linked autophagy stabilizes apoptosis effector PERP and triggers its co-localization with SERCA2b at ER-plasma membrane junctions. Cell Death Discov 2019; 5:132. [PMID: 31508245 PMCID: PMC6718399 DOI: 10.1038/s41420-019-0212-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/24/2019] [Accepted: 07/29/2019] [Indexed: 01/01/2023] Open
Abstract
Specific molecular interactions that underpin the switch between ER stress-triggered autophagy-mediated cellular repair and cellular death by apoptosis are not characterized. This study reports the unexpected interaction elicited by ER stress between the plasma membrane (PM)-localized apoptosis effector PERP and the ER Ca2+ pump SERCA2b. We show that the p53 effector PERP, which specifically induces apoptosis when expressed above a threshold level, has a heterogeneous distribution across the PM of un-stressed cells and is actively turned over by the lysosome. PERP is upregulated following sustained starvation-induced autophagy, which precedes the onset of apoptosis indicating that PERP protein levels are controlled by a lysosomal pathway that is sensitive to cellular physiological state. Furthermore, ER stress stabilizes PERP at the PM and induces its increasing co-localization with SERCA2b at ER–PM junctions. The findings highlight a novel crosstalk between pro-survival autophagy and pro-death apoptosis pathways and identify, for the first time, accumulation of an apoptosis effector to ER–PM junctions in response to ER stress.
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Affiliation(s)
- Samantha J McDonnell
- 1Department of Eye and Vision Science, Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, L7 8TX UK
| | - David G Spiller
- 2Systems Microscopy Centre, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT UK
| | - Michael R H White
- 3School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PT UK
| | - Ian A Prior
- 4Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3BX UK
| | - Luminita Paraoan
- 1Department of Eye and Vision Science, Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool, L7 8TX UK
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8
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Thorat RG, Brooks BA, Nichols B, Harned AM. Stereoselective synthesis of the C14-C23 fragment of biselyngbyolide A and B enabled by transition metal catalysis. Tetrahedron 2018; 74:7277-7281. [PMID: 30636818 PMCID: PMC6327972 DOI: 10.1016/j.tet.2018.10.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Transition met al catalysis has enabled the highly stereoselective and protecting group-free synthesis of the C14-C23 fragment of the apoptosis-inducing natural products biselyngbyolide A and B. A Pd-catalyzed Stille reaction between a vinyl stannane and a crotyl carbonate formed the skipped diene with complete control of the the trisubstituted bond and excellent control over the branched/linear products. A Cu-catalyzed Stahl oxidation was used to form the requisite aldehyde needed for a Ag-catalyzed asymmetric allylation. The latter provided the final fragment with excellent stereochemical control.
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Affiliation(s)
- Rakesh G. Thorat
- Texas Tech University, Department of Chemistry & Biochemistry, 1204 Boston Ave., Lubbock, TX, 79409-1061, USA
| | - Bailey A. Brooks
- Texas Tech University, Department of Chemistry & Biochemistry, 1204 Boston Ave., Lubbock, TX, 79409-1061, USA
| | - Brandon Nichols
- Texas Tech University, Department of Chemistry & Biochemistry, 1204 Boston Ave., Lubbock, TX, 79409-1061, USA
| | - Andrew M. Harned
- Texas Tech University, Department of Chemistry & Biochemistry, 1204 Boston Ave., Lubbock, TX, 79409-1061, USA
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9
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Roest G, Hesemans E, Welkenhuyzen K, Luyten T, Engedal N, Bultynck G, Parys JB. The ER Stress Inducer l-Azetidine-2-Carboxylic Acid Elevates the Levels of Phospho-eIF2α and of LC3-II in a Ca 2+-Dependent Manner. Cells 2018; 7:E239. [PMID: 30513588 PMCID: PMC6316609 DOI: 10.3390/cells7120239] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 11/27/2018] [Accepted: 11/28/2018] [Indexed: 12/11/2022] Open
Abstract
Accumulation of misfolded proteins in the endoplasmic reticulum (ER) activates the unfolded protein response (UPR) to reduce protein load and restore homeostasis, including via induction of autophagy. We used the proline analogue l-azetidine-2-carboxylic acid (AZC) to induce ER stress, and assessed its effect on autophagy and Ca2+ homeostasis. Treatment with 5 mM AZC did not induce poly adenosine diphosphate ribose polymerase (PARP) cleavage while levels of binding immunoglobulin protein (BiP) and phosphorylated eukaryotic translation initiation factor 2α (eIF2α) increased and those of activating transcription factor 6 (ATF6) decreased, indicating activation of the protein kinase RNA-like ER kinase (PERK) and the ATF6 arms of the UPR but not of apoptosis. AZC treatment in combination with bafilomycin A1 (Baf A1) led to elevated levels of the lipidated form of the autophagy marker microtubule-associated protein light chain 3 (LC3), pointing to activation of autophagy. Using the specific PERK inhibitor AMG PERK 44, we could deduce that activation of the PERK branch is required for the AZC-induced lipidation of LC3. Moreover, both the levels of phospho-eIF2α and of lipidated LC3 were strongly reduced when cells were co-treated with the intracellular Ca2+ chelator 1,2-bis(O-aminophenoxy)ethane-N,N,N',N'-tetraaceticacid tetra(acetoxy-methyl) ester (BAPTA-AM) but not when co-treated with the Na⁺/K⁺ ATPase inhibitor ouabain, suggesting an essential role of Ca2+ in AZC-induced activation of the PERK arm of the UPR and LC3 lipidation. Finally, AZC did not trigger Ca2+ release from the ER though appeared to decrease the cytosolic Ca2+ rise induced by thapsigargin while also decreasing the time constant for Ca2+ clearance. The ER Ca2+ store content and mitochondrial Ca2+ uptake however remained unaffected.
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Affiliation(s)
- Gemma Roest
- Laboratory for Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine & Leuven Kanker Instituut, KU Leuven, Campus Gasthuisberg O/N-1 B-802, Herestraat 49, BE-3000 Leuven, Belgium.
| | - Evelien Hesemans
- Laboratory for Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine & Leuven Kanker Instituut, KU Leuven, Campus Gasthuisberg O/N-1 B-802, Herestraat 49, BE-3000 Leuven, Belgium.
| | - Kirsten Welkenhuyzen
- Laboratory for Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine & Leuven Kanker Instituut, KU Leuven, Campus Gasthuisberg O/N-1 B-802, Herestraat 49, BE-3000 Leuven, Belgium.
| | - Tomas Luyten
- Laboratory for Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine & Leuven Kanker Instituut, KU Leuven, Campus Gasthuisberg O/N-1 B-802, Herestraat 49, BE-3000 Leuven, Belgium.
| | - Nikolai Engedal
- Centre for Molecular Medicine Norway, Nordic EMBL Partnership for Molecular Medicine, University of Oslo, P.O. Box 1137 Blindern, N-0318 Oslo, Norway.
| | - Geert Bultynck
- Laboratory for Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine & Leuven Kanker Instituut, KU Leuven, Campus Gasthuisberg O/N-1 B-802, Herestraat 49, BE-3000 Leuven, Belgium.
| | - Jan B Parys
- Laboratory for Molecular and Cellular Signaling, Department of Cellular and Molecular Medicine & Leuven Kanker Instituut, KU Leuven, Campus Gasthuisberg O/N-1 B-802, Herestraat 49, BE-3000 Leuven, Belgium.
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10
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Intrinsic attenuation of post-irradiation calcium and ER stress imparts significant radioprotection to lepidopteran insect cells. Biochem Biophys Res Commun 2018. [PMID: 29534965 DOI: 10.1016/j.bbrc.2018.03.078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Sf9 lepidopteran insect cells are 100-200 times more radioresistant than mammalian cells. This distinctive feature thus makes them suitable for studies exploring radioprotective molecular mechanisms. It has been established from previous studies of our group that downstream mitochondrial apoptotic signaling pathways in Sf9 cells are quite similar to mammalian cells, implicating the upstream signaling pathways in their extensive radioresistance. In the present study, intracellular and mitochondrial calcium levels remained unaltered in Sf9 cells in response to radiation, in sharp contrast to human (HEK293T) cells. The isolated mitochondria from Sf9 cells exhibited nearly 1.5 times greater calcium retention capacity than mammalian cells, highlighting their inherent stress resilience. Importantly, UPR/ER stress marker proteins (p-eIF2α, GRP4 and SERCA) remained unaltered by radiation and suggested highly attenuated ER and calcium stress. Lack of SERCA induction further corroborates the lack of radiation-induced calcium mobilization in these cells. The expression of CaMKII, an important effector molecule of calcium signaling, did not alter in response to radiation. Inhibiting CaMKII by KN-93 or suppressing CaM by siRNA failed to alter Sf9 cells response to radiation and suggests CaM-CaMKII independent radiation signaling. Therefore, this study suggests that attenuated calcium signaling/ER stress is an important determinant of lepidopteran cell radioresistance.
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11
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Mahanine drives pancreatic adenocarcinoma cells into endoplasmic reticular stress-mediated apoptosis through modulating sialylation process and Ca 2+-signaling. Sci Rep 2018; 8:3911. [PMID: 29500369 PMCID: PMC5834441 DOI: 10.1038/s41598-018-22143-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 02/16/2018] [Indexed: 11/19/2022] Open
Abstract
Endoplasmic reticulum (ER) stress results from protein unfolding/misfolding during cellular maturation, which requires a coordinated action of several chaperones and enzymes and Ca2+ signalling. ER-stress possibly has a positive effect on survival of pancreatic cancer cell. Therefore, detailed insights into this complex signaling network are urgently needed. Here, we systematically analyzed the impact of ER stress-mediated unfolded protein response (UPR) and Ca2+-signaling cross-talk for the survival of pancreatic adenocarcinoma (PDAC) cells. We observed enhanced ER activity and initiation of UPR signaling induced by a carbazole alkaloid (mahanine). This event triggers a time-dependent increase of intracellular Ca2+ leakage from ER and subsequently Ca2+ signaling induced by enhanced reactive oxygen species (ROS) produced by this pro-oxidant agent. In addition, we observed an altered glycosylation, in particular with regard to reduced linkage-specific sialic acids possibly due to decreased sialyltransferase activity. Changes in sialylation entailed enhanced expression of the ganglioside GD3 in the treated cells. GD3, an inducer of apoptosis, inhibited pancreatic xenograft tumor. Taken together, our study describes a molecular scenario how PDAC cells are driven into apoptosis by mahanine by UPR-driven ER stress-associated and ROS-mediated calcium signaling and possibly defective sialylation.
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12
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Thorat RG, Harned AM. Rapid, enantioselective synthesis of the C1–C13 fragment of biselyngbyolide B. Chem Commun (Camb) 2018; 54:241-243. [DOI: 10.1039/c7cc08004b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using catalytic transformations for C–C bond formation allows for a nine-step synthesis of the biselyngbyolide C1–C13 fragment.
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Affiliation(s)
- Rakesh G. Thorat
- Texas Tech University
- Department of Chemistry & Biochemistry
- Lubbock
- USA
| | - Andrew M. Harned
- Texas Tech University
- Department of Chemistry & Biochemistry
- Lubbock
- USA
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13
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Bower DV, Lansdale N, Navarro S, Truong TV, Bower DJ, Featherstone NC, Connell MG, Al Alam D, Frey MR, Trinh LA, Fernandez GE, Warburton D, Fraser SE, Bennett D, Jesudason EC. SERCA directs cell migration and branching across species and germ layers. Biol Open 2017; 6:1458-1471. [PMID: 28821490 PMCID: PMC5665464 DOI: 10.1242/bio.026039] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Accepted: 08/14/2017] [Indexed: 12/24/2022] Open
Abstract
Branching morphogenesis underlies organogenesis in vertebrates and invertebrates, yet is incompletely understood. Here, we show that the sarco-endoplasmic reticulum Ca2+ reuptake pump (SERCA) directs budding across germ layers and species. Clonal knockdown demonstrated a cell-autonomous role for SERCA in Drosophila air sac budding. Live imaging of Drosophila tracheogenesis revealed elevated Ca2+ levels in migratory tip cells as they form branches. SERCA blockade abolished this Ca2+ differential, aborting both cell migration and new branching. Activating protein kinase C (PKC) rescued Ca2+ in tip cells and restored cell migration and branching. Likewise, inhibiting SERCA abolished mammalian epithelial budding, PKC activation rescued budding, while morphogens did not. Mesoderm (zebrafish angiogenesis) and ectoderm (Drosophila nervous system) behaved similarly, suggesting a conserved requirement for cell-autonomous Ca2+ signaling, established by SERCA, in iterative budding.
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Affiliation(s)
- Danielle V Bower
- Division of Biological Sciences, California Institute of Technology, Pasadena, CA 91125, USA
- The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA
- Department of Diagnostic, Interventional and Pediatric Radiology, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland, and the Department of Biomedical Research, University of Bern, 3008 Bern, Switzerland
| | - Nick Lansdale
- Department of Biochemistry & Centre for Cell Imaging, Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK
- Division of Child Health, Institute of Translational Medicine, University of Liverpool, Liverpool L12 2AP, UK
| | - Sonia Navarro
- The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA
- Craniofacial Biology, Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, CA 90089, USA
| | - Thai V Truong
- Division of Biological Sciences, California Institute of Technology, Pasadena, CA 91125, USA
- Biological Sciences and Molecular and Computational Biology, Translational Imaging Center, University of Southern California, Los Angeles, CA 90089, USA
| | - Dan J Bower
- Center for Space and Habitability, University of Bern, 3012 Bern, Switzerland
| | - Neil C Featherstone
- Department of Biochemistry & Centre for Cell Imaging, Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK
| | - Marilyn G Connell
- Department of Biochemistry & Centre for Cell Imaging, Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK
| | - Denise Al Alam
- The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA
| | - Mark R Frey
- The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA
| | - Le A Trinh
- Division of Biological Sciences, California Institute of Technology, Pasadena, CA 91125, USA
- Biological Sciences and Molecular and Computational Biology, Translational Imaging Center, University of Southern California, Los Angeles, CA 90089, USA
| | - G Esteban Fernandez
- The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA
| | - David Warburton
- The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA
| | - Scott E Fraser
- Division of Biological Sciences, California Institute of Technology, Pasadena, CA 91125, USA
- Biological Sciences and Biomedical Engineering, University of Southern California, Los Angeles, CA 90089, USA
- Biological Sciences and Molecular and Computational Biology, Translational Imaging Center, University of Southern California, Los Angeles, CA 90089, USA
| | - Daimark Bennett
- Department of Biochemistry & Centre for Cell Imaging, Institute of Integrative Biology, University of Liverpool, Liverpool L69 7ZB, UK
| | - Edwin C Jesudason
- Division of Biological Sciences, California Institute of Technology, Pasadena, CA 91125, USA
- The Saban Research Institute, Children's Hospital Los Angeles, Los Angeles, CA 90027, USA
- NHS Lothian, Edinburgh, EH14 1TY, UK
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14
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Vierra NC, Dadi PK, Milian SC, Dickerson MT, Jordan KL, Gilon P, Jacobson DA. TALK-1 channels control β cell endoplasmic reticulum Ca 2+ homeostasis. Sci Signal 2017; 10:eaan2883. [PMID: 28928238 PMCID: PMC5672804 DOI: 10.1126/scisignal.aan2883] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Ca2+ handling by the endoplasmic reticulum (ER) serves critical roles in controlling pancreatic β cell function and becomes perturbed during the pathogenesis of diabetes. ER Ca2+ homeostasis is determined by ion movements across the ER membrane, including K+ flux through K+ channels. We demonstrated that K+ flux through ER-localized TALK-1 channels facilitated Ca2+ release from the ER in mouse and human β cells. We found that β cells from mice lacking TALK-1 exhibited reduced basal cytosolic Ca2+ and increased ER Ca2+ concentrations, suggesting reduced ER Ca2+ leak. These changes in Ca2+ homeostasis were presumably due to TALK-1-mediated ER K+ flux, because we recorded K+ currents mediated by functional TALK-1 channels on the nuclear membrane, which is continuous with the ER. Moreover, overexpression of K+-impermeable TALK-1 channels in HEK293 cells did not reduce ER Ca2+ stores. Reduced ER Ca2+ content in β cells is associated with ER stress and islet dysfunction in diabetes, and islets from TALK-1-deficient mice fed a high-fat diet showed reduced signs of ER stress, suggesting that TALK-1 activity exacerbated ER stress. Our data establish TALK-1 channels as key regulators of β cell ER Ca2+ and suggest that TALK-1 may be a therapeutic target to reduce ER Ca2+ handling defects in β cells during the pathogenesis of diabetes.
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Affiliation(s)
- Nicholas C Vierra
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA
| | - Prasanna K Dadi
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA
| | - Sarah C Milian
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA
| | - Matthew T Dickerson
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA
| | - Kelli L Jordan
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA
| | - Patrick Gilon
- Pôle d'endocrinologie, diabète et nutrition, Institut de recherche expérimentale et clinique, Université catholique de Louvain, Brussels 1200, Belgium
| | - David A Jacobson
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN 37232, USA.
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15
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Fragoso-Medina J, Rodriguez G, Zarain-Herzberg A. The CCAAT box in the proximal SERCA2 gene promoter regulates basal and stress-induced transcription in cardiomyocytes. Mol Cell Biochem 2017; 442:19-28. [DOI: 10.1007/s11010-017-3189-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Accepted: 09/01/2017] [Indexed: 10/18/2022]
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16
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Li WH, Yu J, Lin YP, Tan X, Song Y. Effect of electroacupuncture at Neiguan (PC 6) and Baihui (GV 20) on CHOP and caspase-12 gene expressions in rats after ischemia-reperfusion injury. JOURNAL OF ACUPUNCTURE AND TUINA SCIENCE 2017. [DOI: 10.1007/s11726-017-0967-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Pytel D, Gao Y, Mackiewicz K, Katlinskaya YV, Staschke KA, Paredes MCG, Yoshida A, Qie S, Zhang G, Chajewski OS, Wu L, Majsterek I, Herlyn M, Fuchs SY, Diehl JA. PERK Is a Haploinsufficient Tumor Suppressor: Gene Dose Determines Tumor-Suppressive Versus Tumor Promoting Properties of PERK in Melanoma. PLoS Genet 2016; 12:e1006518. [PMID: 27977682 PMCID: PMC5207760 DOI: 10.1371/journal.pgen.1006518] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Revised: 01/03/2017] [Accepted: 12/01/2016] [Indexed: 02/01/2023] Open
Abstract
The unfolded protein response (UPR) regulates cell fate following exposure of cells to endoplasmic reticulum stresses. PERK, a UPR protein kinase, regulates protein synthesis and while linked with cell survival, exhibits activities associated with both tumor progression and tumor suppression. For example, while cells lacking PERK are sensitive to UPR-dependent cell death, acute activation of PERK triggers both apoptosis and cell cycle arrest, which would be expected to contribute tumor suppressive activity. We have evaluated these activities in the BRAF-dependent melanoma and provide evidence revealing a complex role for PERK in melanoma where a 50% reduction is permissive for BrafV600E-dependent transformation, while complete inhibition is tumor suppressive. Consistently, PERK mutants identified in human melanoma are hypomorphic with dominant inhibitory function. Strikingly, we demonstrate that small molecule PERK inhibitors exhibit single agent efficacy against BrafV600E-dependent tumors highlighting the clinical value of targeting PERK. PERK is critical for progression of specific cancers and has provided stimulus for the generation of small molecule PERK inhibitors. Paradoxically, the anti-proliferative and pro-death functions of PERK have potential tumor suppressive qualities. We demonstrate that PERK can function as either a tumor suppressor or a pro-adaptive tumor promoter and the nature of its function is determined by gene dose. Preclinical studies suggest a therapeutic threshold exists for PERK inhibitors.
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Affiliation(s)
- Dariusz Pytel
- Department of Biochemistry and Molecular Biology, Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Yan Gao
- Department of Biochemistry and Molecular Biology, Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Katarzyna Mackiewicz
- Department of Biochemistry and Molecular Biology, Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Yuliya V. Katlinskaya
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Kirk A. Staschke
- Oncology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Lilly Corporate Center dc1104, Indianapolis, Indiana, United States of America
| | - Maria C. G. Paredes
- Oncology Discovery Research, Lilly Research Laboratories, Eli Lilly and Company, Lilly Corporate Center dc1104, Indianapolis, Indiana, United States of America
| | - Akihiro Yoshida
- Department of Biochemistry and Molecular Biology, Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Shuo Qie
- Department of Biochemistry and Molecular Biology, Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Gao Zhang
- Molecular and Cellular Oncogenesis Program, The Wistar Institute, Philadelphia, Pennsylvania, United States of America
| | - Olga S. Chajewski
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Lawrence Wu
- Molecular and Cellular Oncogenesis Program, The Wistar Institute, Philadelphia, Pennsylvania, United States of America
| | - Ireneusz Majsterek
- Department of Clinical Chemistry and Biochemistry, Medical University of Lodz, Lodz, Poland
| | - Meenhard Herlyn
- Molecular and Cellular Oncogenesis Program, The Wistar Institute, Philadelphia, Pennsylvania, United States of America
| | - Serge Y. Fuchs
- Department of Biomedical Sciences, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - J. Alan Diehl
- Department of Biochemistry and Molecular Biology, Hollings Cancer Center, Medical University of South Carolina, Charleston, South Carolina, United States of America
- * E-mail:
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18
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Duan XQ, Li YH, Zhang XY, Zhao ZT, Wang Y, Wang H, Li GS, Jing L. Mechanisms of Intracellular Calcium Homeostasis in MC3T3-E1 Cells and Bone Tissues of Sprague-Dawley Rats Exposed to Fluoride. Biol Trace Elem Res 2016; 170:331-9. [PMID: 26276564 DOI: 10.1007/s12011-015-0465-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 07/29/2015] [Indexed: 10/23/2022]
Abstract
Calcium homeostasis of osteoblasts (OBs) has an important role in the physiology and pathology of bone tissue. In order to study the mechanisms of intracellular calcium homeostasis, MC3T3-E1 cells and Sprague-Dawley rats were treated with different concentrations of fluoride. Then, we examined intracellular-free calcium ion ([Ca(2+)]i) in MC3T3-E1 cells as well as mRNA and protein levels of Cav1.2, the main subunit of L-type voltage-dependent calcium channels (VDCCs), Na(+)/Ca(2+) exchange carriers (NCS), and plasma membrane Ca(2+)-ATPase (PMCA), inositol 1,4,5-trisphosphate receptor (IP3R) channels, sarco/endoplasmic reticulum calcium ATPase 2b (SERCA2b)/ATP2A2 in vitro, and rat bone tissues in vivo. Our results showed that [Ca(2+)]i of fluoride-treated OBs increased in a concentration-dependent manner with an increase in the concentration of fluoride. We also found that the low dose of fluoride led to high expression levels of Cav1.2, NCS-1, and PMCA and low expression levels of IP3R and SERCA2b/ATP2A2, while the high dose of fluoride induced an increase in SERCA2b/ATP2A2 levels and decrease in Cav1.2, PMCA, NCS-1, and IP3R levels. These results demonstrate that calcium channels and calcium pumps of plasma and endoplasmic reticulum (ER) membranes keep intracellular calcium homeostasis by regulating Cav1.2, NCS-1, PMCA, IP3R, and SERCA2b/ATP2A2 expression.
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Affiliation(s)
- Xiao-qin Duan
- The Second Hospital Norman Bethune of Jilin University, Changchun, 130041, People's Republic of China
| | - Yan-hui Li
- The Second Hospital Norman Bethune of Jilin University, Changchun, 130041, People's Republic of China
| | - Xiu-yun Zhang
- Institute of Endemic Disease of Jilin University, 1163 Xinmin Street, Changchun, 130021, People's Republic of China
| | - Zhi-tao Zhao
- Institute of Endemic Disease of Jilin University, 1163 Xinmin Street, Changchun, 130021, People's Republic of China
| | - Ying Wang
- The First Hospital Norman Bethune of Jilin University, Changchun, 130021, People's Republic of China
| | - Huan Wang
- The Second Hospital Norman Bethune of Jilin University, Changchun, 130041, People's Republic of China
| | - Guang-sheng Li
- Institute of Endemic Disease of Jilin University, 1163 Xinmin Street, Changchun, 130021, People's Republic of China
| | - Ling Jing
- Institute of Endemic Disease of Jilin University, 1163 Xinmin Street, Changchun, 130021, People's Republic of China.
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19
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Kollipara L, Buchkremer S, Weis J, Brauers E, Hoss M, Rütten S, Caviedes P, Zahedi RP, Roos A. Proteome Profiling and Ultrastructural Characterization of the Human RCMH Cell Line: Myoblastic Properties and Suitability for Myopathological Studies. J Proteome Res 2016; 15:945-55. [PMID: 26781476 DOI: 10.1021/acs.jproteome.5b00972] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Studying (neuro)muscular disorders is a major topic in biomedicine with a demand for suitable model systems. Continuous cell culture (in vitro) systems have several technical advantages over in vivo systems and became widely used tools for discovering physiological/pathophysiological mechanisms in muscle. In particular, myoblast cell lines are suitable model systems to study complex biochemical adaptations occurring in skeletal muscle and cellular responses to altered genetic/environmental conditions. Whereas most in vitro studies use extensively characterized murine C2C12 cells, a comprehensive description of an equivalent human cell line, not genetically manipulated for immortalization, is lacking. Therefore, we characterized human immortal myoblastic RCMH cells using scanning (SEM) and transmission electron microscopy (TEM) and proteomics. Among more than 6200 identified proteins we confirm the known expression of proteins important for muscle function. Comparing the RCMH proteome with two well-defined nonskeletal muscle cells lines (HeLa, U2OS) revealed a considerable enrichment of proteins important for muscle function. SEM/TEM confirmed the presence of agglomerates of cytoskeletal components/intermediate filaments and a prominent rough ER. In conclusion, our results indicate RMCH as a suitable in vitro model for investigating muscle function-related processes such as mechanical stress burden and mechanotransduction, EC coupling, cytoskeleton, muscle cell metabolism and development, and (ER-associated) myopathic disorders.
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Affiliation(s)
- Laxmikanth Kollipara
- Leibniz-Institut für Analytische Wissenschaften, ISAS e.V. , Otto-Hahn-Str. 6b, 44227 Dortmund, Germany
| | - Stephan Buchkremer
- Institute of Neuropathology, RWTH Aachen University Hospital , Pauwelsstrasse 30, D-52074 Aachen, Germany
| | - Joachim Weis
- Institute of Neuropathology, RWTH Aachen University Hospital , Pauwelsstrasse 30, D-52074 Aachen, Germany
| | - Eva Brauers
- Institute of Neuropathology, RWTH Aachen University Hospital , Pauwelsstrasse 30, D-52074 Aachen, Germany
| | - Mareike Hoss
- Electron Microscopic Facility, Institute of Pathology, RWTH Aachen University Hospital , D-52074 Aachen, Germany
| | - Stephan Rütten
- Electron Microscopic Facility, Institute of Pathology, RWTH Aachen University Hospital , D-52074 Aachen, Germany
| | - Pablo Caviedes
- Programa de Farmacología Molecular y Clínica, ICBM, Facultad de Medicina, Universidad de Chile , Santiago 1058, Chile
| | - René P Zahedi
- Leibniz-Institut für Analytische Wissenschaften, ISAS e.V. , Otto-Hahn-Str. 6b, 44227 Dortmund, Germany
| | - Andreas Roos
- Leibniz-Institut für Analytische Wissenschaften, ISAS e.V. , Otto-Hahn-Str. 6b, 44227 Dortmund, Germany.,Institute of Neuropathology, RWTH Aachen University Hospital , Pauwelsstrasse 30, D-52074 Aachen, Germany
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20
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Gustavo Vazquez-Jimenez J, Chavez-Reyes J, Romero-Garcia T, Zarain-Herzberg A, Valdes-Flores J, Manuel Galindo-Rosales J, Rueda A, Guerrero-Hernandez A, Olivares-Reyes JA. Palmitic acid but not palmitoleic acid induces insulin resistance in a human endothelial cell line by decreasing SERCA pump expression. Cell Signal 2015; 28:53-9. [PMID: 26475209 DOI: 10.1016/j.cellsig.2015.10.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2015] [Revised: 09/05/2015] [Accepted: 10/11/2015] [Indexed: 10/22/2022]
Abstract
Palmitic acid is a negative regulator of insulin activity. At the molecular level, palmitic acid reduces insulin stimulated Akt Ser473 phosphorylation. Interestingly, we have found that incubation with palmitic acid of human umbilical vein endothelial cells induced a biphasic effect, an initial transient elevation followed by a sustained reduction of SERCA pump protein levels. However, palmitic acid produced a sustained inhibition of SERCA pump ATPase activity. Insulin resistance state appeared before there was a significant reduction of SERCA2 expression. The mechanism by which palmitic acid impairs insulin signaling may involve endoplasmic reticulum stress, because this fatty acid induced activation of both PERK, an ER stress marker, and JNK, a kinase associated with insulin resistance. None of these effects were observed by incubating HUVEC-CS cells with palmitoleic acid. Importantly, SERCA2 overexpression decreased the palmitic acid-induced insulin resistance state. All these results suggest that SERCA pump might be the target of palmitic acid to induce the insulin resistance state in a human vascular endothelial cell line. Importantly, these data suggest that HUVEC-CS cells respond to palmitic acid-exposure with a compensatory overexpression of SERCA pump within the first hour, which eventually fades out and insulin resistance prevails.
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Affiliation(s)
- J Gustavo Vazquez-Jimenez
- Department of Biochemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, CINVESTAV-IPN, Mexico DF 07360, Mexico
| | - Jesus Chavez-Reyes
- Department of Biochemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, CINVESTAV-IPN, Mexico DF 07360, Mexico
| | - Tatiana Romero-Garcia
- Department of Biochemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, CINVESTAV-IPN, Mexico DF 07360, Mexico
| | - Angel Zarain-Herzberg
- Department of Biochemistry, School of Medicine, National Autonomous University of Mexico, DF 04510, Mexico
| | - Jesus Valdes-Flores
- Department of Biochemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, CINVESTAV-IPN, Mexico DF 07360, Mexico
| | - J Manuel Galindo-Rosales
- Department of Biochemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, CINVESTAV-IPN, Mexico DF 07360, Mexico
| | - Angelica Rueda
- Department of Biochemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, CINVESTAV-IPN, Mexico DF 07360, Mexico
| | - Agustin Guerrero-Hernandez
- Department of Biochemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, CINVESTAV-IPN, Mexico DF 07360, Mexico
| | - J Alberto Olivares-Reyes
- Department of Biochemistry, Center for Research and Advanced Studies of the National Polytechnic Institute, CINVESTAV-IPN, Mexico DF 07360, Mexico.
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Drop in endo/sarcoplasmic calcium precedes the unfolded protein response in Brefeldin A-treated vascular smooth muscle cells. Eur J Pharmacol 2015; 764:328-339. [DOI: 10.1016/j.ejphar.2015.07.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 07/08/2015] [Accepted: 07/10/2015] [Indexed: 11/22/2022]
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22
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Endoplasmic Reticulum Stress-Related Genes in Yellow Catfish Pelteobagrus fulvidraco: Molecular Characterization, Tissue Expression, and Expression Responses to Dietary Copper Deficiency and Excess. G3-GENES GENOMES GENETICS 2015; 5:2091-104. [PMID: 26276384 PMCID: PMC4592992 DOI: 10.1534/g3.115.019950] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Two endoplasmic reticulum (ER) molecular chaperones [glucose-regulated protein 78 (grp78) and calreticulin (crt)] and three ER stress sensors [PKR-like ER kinase (perk), inositol requiring enzyme (ire)-1α, and activating transcription factor (atf)-6α] cDNAs were first characterized from yellow catfish, Pelteobagrus fulvidraco. The predicted amino acid sequences for the yellow catfish grp78, crt, perk, ire-1α, and atf-6α revealed that the proteins contained all of the structural features that were characteristic of the five genes in other species, including the KDEL motif, signal peptide, sensor domain, and effector domain. mRNAs of the five genes mentioned above were expressed in various tissues, but their mRNA levels varied among tissues. Dietary Cu excess, but not Cu deficiency, activated the chaperones (grp78 and crt) and folding sensors in ER, and the UPR signaling pathways (i.e., perk–eif2α and the ire1–xbp1) in a tissue-specific manner. For the first time, our study cloned grp78, crt, perk, ire-1α, and atf-6α genes in yellow catfish and demonstrated their differential expression among tissues. Moreover, the present study also indicated differential regulation of these ER stress–related genes by dietary Cu deficiency and excess, which will be beneficial for us to evaluate effects of dietary Cu levels in fish at the molecular level, based on the upstream pathway of lipid metabolism (the ER) and thus provide novel insights regarding the nutrition of Cu in fish.
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23
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Morita M, Ogawa H, Ohno O, Yamori T, Suenaga K, Toyoshima C. Biselyngbyasides, cytotoxic marine macrolides, are novel and potent inhibitors of the Ca2+pumps with a unique mode of binding. FEBS Lett 2015; 589:1406-11. [DOI: 10.1016/j.febslet.2015.04.056] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 04/24/2015] [Accepted: 04/27/2015] [Indexed: 01/07/2023]
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24
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Fan L, Li A, Li W, Cai P, Yang B, Zhang M, Gu Y, Shu Y, Sun Y, Shen Y, Wu X, Hu G, Wu X, Xu Q. Novel role of Sarco/endoplasmic reticulum calcium ATPase 2 in development of colorectal cancer and its regulation by F36, a curcumin analog. Biomed Pharmacother 2014; 68:1141-8. [DOI: 10.1016/j.biopha.2014.10.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Accepted: 10/16/2014] [Indexed: 11/29/2022] Open
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25
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Zatyka M, Da Silva Xavier G, Bellomo EA, Leadbeater W, Astuti D, Smith J, Michelangeli F, Rutter GA, Barrett TG. Sarco(endo)plasmic reticulum ATPase is a molecular partner of Wolfram syndrome 1 protein, which negatively regulates its expression. Hum Mol Genet 2014; 24:814-27. [PMID: 25274773 DOI: 10.1093/hmg/ddu499] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Wolfram syndrome is an autosomal recessive disorder characterized by neurodegeneration and diabetes mellitus. The gene responsible for the syndrome (WFS1) encodes an endoplasmic reticulum (ER)-resident transmembrane protein that is involved in the regulation of the unfolded protein response (UPR), intracellular ion homeostasis, cyclic adenosine monophosphate production and regulation of insulin biosynthesis and secretion. In this study, single cell Ca(2+) imaging with fura-2 and direct measurements of free cytosolic ATP concentration ([ATP]CYT) with adenovirally expressed luciferase confirmed a reduced and delayed rise in cytosolic free Ca(2+) concentration ([Ca(2+)]CYT), and additionally, diminished [ATP]CYT rises in response to elevated glucose concentrations in WFS1-depleted MIN6 cells. We also observed that sarco(endo)plasmic reticulum ATPase (SERCA) expression was elevated in several WFS1-depleted cell models and primary islets. We demonstrated a novel interaction between WFS1 and SERCA by co-immunoprecipitation in Cos7 cells and with endogenous proteins in human neuroblastoma cells. This interaction was reduced when cells were treated with the ER stress inducer dithiothreitol. Treatment of WFS1-depleted neuroblastoma cells with the proteasome inhibitor MG132 resulted in reduced accumulation of SERCA levels compared with wild-type cells. Together these results reveal a role for WFS1 in the negative regulation of SERCA and provide further insights into the function of WFS1 in calcium homeostasis.
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Affiliation(s)
| | - Gabriela Da Silva Xavier
- Department of Cell Biology, Division of Medicine, Faculty of Medicine, Imperial Centre for Translation and Experimental Medicine, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK
| | - Elisa A Bellomo
- Department of Cell Biology, Division of Medicine, Faculty of Medicine, Imperial Centre for Translation and Experimental Medicine, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK
| | | | - Dewi Astuti
- Department of Medical and Molecular Genetics
| | - Joel Smith
- Department of Medical and Molecular Genetics
| | - Frank Michelangeli
- School of Clinical and Experimental Medicine, The Medical School School of Biosciences, University of Birmingham, Birmingham B15 2TT, UK and
| | - Guy A Rutter
- Department of Cell Biology, Division of Medicine, Faculty of Medicine, Imperial Centre for Translation and Experimental Medicine, Hammersmith Hospital, Du Cane Road, London W12 0NN, UK
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26
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Vandecaetsbeek I, Holemans T, Wuytack F, Vangheluwe P. High-throughput measurement of the Ca2+-dependent ATPase activity in COS microsomes. Cold Spring Harb Protoc 2014; 2014:865-75. [PMID: 25086012 DOI: 10.1101/pdb.prot076885] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
We provide a detailed procedure to determine the Ca(2+)-dependent ATPase activity in COS or HEK293 cells overexpressing a Ca(2+) pump. The ATPase activity is determined by the Baginsky method, which allows measurement of the steady-state production of inorganic phosphate (Pi). We have adapted this widely applied method into a sensitive, fast, and semi-high-throughput protocol suitable for use in a 96-well plate format.
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Affiliation(s)
- Ilse Vandecaetsbeek
- Laboratory of Cellular Transport Systems, Department of Cellular and Molecular Medicine, KU Leuven, B3000 Leuven, Belgium
| | - Tine Holemans
- Laboratory of Cellular Transport Systems, Department of Cellular and Molecular Medicine, KU Leuven, B3000 Leuven, Belgium
| | - Frank Wuytack
- Laboratory of Cellular Transport Systems, Department of Cellular and Molecular Medicine, KU Leuven, B3000 Leuven, Belgium
| | - Peter Vangheluwe
- Laboratory of Cellular Transport Systems, Department of Cellular and Molecular Medicine, KU Leuven, B3000 Leuven, Belgium
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27
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Li Y, Guo Y, Tang J, Jiang J, Chen Z. New insights into the roles of CHOP-induced apoptosis in ER stress. Acta Biochim Biophys Sin (Shanghai) 2014; 46:629-40. [PMID: 25016584 DOI: 10.1093/abbs/gmu048] [Citation(s) in RCA: 317] [Impact Index Per Article: 31.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Endoplasmic reticulum stress (ER stress) is triggered due to a loss of homeostasis in the ER, resulting in accumulation of misfolded proteins in the ER lumen. ER stress activates a series of adaptive mechanisms known as the unfolded protein response. Perturbation of the ER is a powerful inducer of the transcription factor C/EBP homologous protein (CHOP). Although it has been proved that excessive or adverse stress to the ER triggers apoptosis, the specific mechanisms underlying these processes induced by CHOP remain unclear. By now, CHOP-induced apoptosis in ER stress has been implicated in numerous human diseases, such as neurodegenerative diseases, diabetes, ischemic diseases, tumor, and so on. In this review, we summarized the current understanding of the roles of CHOP in the development of several diseases from the laboratory to the clinic.
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28
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Henderson MJ, Wires ES, Trychta KA, Richie CT, Harvey BK. SERCaMP: a carboxy-terminal protein modification that enables monitoring of ER calcium homeostasis. Mol Biol Cell 2014; 25:2828-39. [PMID: 25031430 PMCID: PMC4161517 DOI: 10.1091/mbc.e14-06-1141] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Depletion of ER calcium can lead to cell death and is implicated in numerous diseases. Secreted ER calcium-monitoring proteins (SERCaMPs) are secreted in response to ER calcium depletion. SERCaMPs identified ER calcium depletion in primary neurons exposed to glutamate, hyperthermia, and coxibs and in rat liver after a single exposure to thapsigargin. Endoplasmic reticulum (ER) calcium homeostasis is disrupted in diverse pathologies, including neurodegeneration, cardiovascular diseases, and diabetes. Temporally defining calcium dysregulation during disease progression, however, has been challenging. Here we describe secreted ER calcium-monitoring proteins (SERCaMPs), which allow for longitudinal monitoring of ER calcium homeostasis. We identified a carboxy-terminal modification that is sufficient to confer release of a protein specifically in response to ER calcium depletion. A Gaussia luciferase (GLuc)–based SERCaMP provides a simple and sensitive method to monitor ER calcium homeostasis in vitro or in vivo by analyzing culture medium or blood. GLuc-SERCaMPs revealed ER calcium depletion in rat primary neurons exposed to various ER stressors. In vivo, ER calcium disruption in rat liver was monitored over several days by repeated sampling of blood. Our results suggest that SERCaMPs will have broad applications for the long-term monitoring of ER calcium homeostasis and the development of therapeutic approaches to counteract ER calcium dysregulation.
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Affiliation(s)
- Mark J Henderson
- Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD 21224
| | - Emily S Wires
- Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD 21224
| | - Kathleen A Trychta
- Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD 21224
| | - Christopher T Richie
- Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD 21224
| | - Brandon K Harvey
- Intramural Research Program, National Institute on Drug Abuse, Baltimore, MD 21224
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29
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Lopez JJ, Palazzo A, Chaabane C, Albarran L, Polidano E, Lebozec K, Dally S, Nurden P, Enouf J, Debili N, Bobe R. Crucial role for endoplasmic reticulum stress during megakaryocyte maturation. Arterioscler Thromb Vasc Biol 2013; 33:2750-8. [PMID: 24115034 DOI: 10.1161/atvbaha.113.302184] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
OBJECTIVE Apoptotic-like phase is an essential step for the platelet formation from megakaryocytes. How controlled is this signaling pathway remained poorly understood. The aim of this study was to determine whether endoplasmic reticulum (ER) stress-induced apoptosis occurs during thrombopoiesis. APPROACH AND RESULTS Investigation of ER stress and maturation markers in different models of human thrombopoiesis (CHRF, DAMI, MEG-01 cell lines, and hematopoietic stem cells: CD34(+)) as well as in immature pathological platelets clearly indicated that ER stress occurs transiently during thrombopoiesis. Direct ER stress induction by tunicamycin, an inhibitor of N-glycosylation, or by sarco/endoplasmic reticulum Ca(2+) ATPase type 3b overexpression, which interferes with reticular calcium, leads to some degree of maturation in megakaryocytic cell lines. On the contrary, exposure to salubrinal, a phosphatase inhibitor that prevents eukaryotic translation initiation factor 2α-P dephosphorylation and inhibits ER stress-induced apoptosis, decreased both expression of maturation markers in MEG-01 and CD34(+) cells as well as numbers of mature megakaryocytes and proplatelet formation in cultured CD34(+) cells. CONCLUSIONS Taken as a whole, our research suggests that transient ER stress activation triggers the apoptotic-like phase of the thrombopoiesis process.
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Affiliation(s)
- Jose J Lopez
- From the Inserm U770, Université Paris-Sud, Le Kremlin-Bicêtre, France (J.J.L., C.C., L.A., E.P., S.D., J.E., R.B.); INSERM UMR1009, Institut Gustave Roussy, Université Paris-Sud, Villejuif, France (A.P., K.L., N.D.); and Centre de Référence des Pathologies Plaquettaires, Plateforme Technologique d'Innovation Biomédicale, Hôpital Xavier Arnozan, Pessac, France (P.N.)
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30
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Bálint Z, Zabini D, Konya V, Nagaraj C, Végh AG, Váró G, Wilhelm I, Fazakas C, Krizbai IA, Heinemann A, Olschewski H, Olschewski A. Double-stranded RNA attenuates the barrier function of human pulmonary artery endothelial cells. PLoS One 2013; 8:e63776. [PMID: 23755110 PMCID: PMC3670875 DOI: 10.1371/journal.pone.0063776] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2013] [Accepted: 04/05/2013] [Indexed: 11/18/2022] Open
Abstract
Circulating RNA may result from excessive cell damage or acute viral infection and can interact with vascular endothelial cells. Despite the obvious clinical implications associated with the presence of circulating RNA, its pathological effects on endothelial cells and the governing molecular mechanisms are still not fully elucidated. We analyzed the effects of double stranded RNA on primary human pulmonary artery endothelial cells (hPAECs). The effect of natural and synthetic double-stranded RNA (dsRNA) on hPAECs was investigated using trans-endothelial electric resistance, molecule trafficking, calcium (Ca2+) homeostasis, gene expression and proliferation studies. Furthermore, the morphology and mechanical changes of the cells caused by synthetic dsRNA was followed by in-situ atomic force microscopy, by vascular-endothelial cadherin and F-actin staining. Our results indicated that exposure of hPAECs to synthetic dsRNA led to functional deficits. This was reflected by morphological and mechanical changes and an increase in the permeability of the endothelial monolayer. hPAECs treated with synthetic dsRNA accumulated in the G1 phase of the cell cycle. Additionally, the proliferation rate of the cells in the presence of synthetic dsRNA was significantly decreased. Furthermore, we found that natural and synthetic dsRNA modulated Ca2+ signaling in hPAECs by inhibiting the sarco-endoplasmic Ca2+-ATPase (SERCA) which is involved in the regulation of the intracellular Ca2+ homeostasis and thus cell growth. Even upon synthetic dsRNA stimulation silencing of SERCA3 preserved the endothelial monolayer integrity. Our data identify novel mechanisms by which dsRNA can disrupt endothelial barrier function and these may be relevant in inflammatory processes.
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Affiliation(s)
- Zoltán Bálint
- Experimental Anesthesiology, Department of Anesthesia and Intensive Care Medicine, Medical University of Graz, Graz, Austria
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Diana Zabini
- Experimental Anesthesiology, Department of Anesthesia and Intensive Care Medicine, Medical University of Graz, Graz, Austria
| | - Viktoria Konya
- Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Graz, Austria
| | - Chandran Nagaraj
- Experimental Anesthesiology, Department of Anesthesia and Intensive Care Medicine, Medical University of Graz, Graz, Austria
| | - Attila G. Végh
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - György Váró
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - Imola Wilhelm
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - Csilla Fazakas
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - István A. Krizbai
- Institute of Biophysics, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - Akos Heinemann
- Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Graz, Austria
| | - Horst Olschewski
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
| | - Andrea Olschewski
- Experimental Anesthesiology, Department of Anesthesia and Intensive Care Medicine, Medical University of Graz, Graz, Austria
- Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
- * E-mail:
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31
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Li Y, Zhu W, Tao J, Xin P, Liu M, Li J, Wei M. Fasudil protects the heart against ischemia-reperfusion injury by attenuating endoplasmic reticulum stress and modulating SERCA activity: the differential role for PI3K/Akt and JAK2/STAT3 signaling pathways. PLoS One 2012; 7:e48115. [PMID: 23118936 PMCID: PMC3485283 DOI: 10.1371/journal.pone.0048115] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 09/20/2012] [Indexed: 11/22/2022] Open
Abstract
Disordered calcium homeostasis can lead to endoplasmic reticulum (ER) stress. Our previous data showed that time course activation of ER stress contributes to time-related increase in ischemia-reperfusion (I/R) injury. However, it has not been tested whether PI3K/Akt and JAK2/STAT3 pathways play differential roles in reducing ER stress to protect the heart. In the present study, using fasudil which is a specific inhibitor of ROCK, we aimed to investigate whether improved SERCA expression and activity accounts for reduced ER stress by ROCK inhibition, specifically whether PI3K/Akt and JAK2/STAT3 pathways are differentially involved in modulating SERCA activity to reduce ER stress and hence I/R injury. The results showed that during the reperfusion period following 45 min of coronary ligation the infarct size (IS) increased from 3 h of reperfusion (45.4±5.57%) to 24 h reperfusion (64.21±5.43, P<0.05), which was associated with ER stress dependent apoptosis signaling activation including CHOP, Caspase-12 and JNK (P<0.05, respectively).The dynamic ER stress activation was also related to impaired SERCA activity at 24 h of reperfusion. Administration of fasudil at 10 mg/Kg significantly attenuated ROCK activation during reperfusion and resulted in an improved SERCA activity which was closely associated with decreases in temporal activation of ER stress and IS changes. Interestingly, while both PI3K/Akt and JAK2/STAT3 signaling pathways played equal role in the protection offered by ROCK inhibition at 3 h of reperfusion, the rescued SERCA expression and activity at 24 h of reperfusion by fasudil was mainly due to JAK2/STAT3 activation, in which PI3K/Akt signaling shared much less roles.
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Affiliation(s)
- Yapeng Li
- Division of Cardiology, Shanghai Sixth Hospital, Shanghai Jiao Tong University School of Medicine, State Key Discipline Division, Shanghai, People's of Republic of China
| | - Wei Zhu
- Division of Cardiology, Shanghai Sixth Hospital, Shanghai Jiao Tong University School of Medicine, State Key Discipline Division, Shanghai, People's of Republic of China
- * E-mail: (WZ); (MW)
| | - Jianping Tao
- Division of Cardiology, Shanghai Sixth Hospital, Shanghai Jiao Tong University School of Medicine, State Key Discipline Division, Shanghai, People's of Republic of China
| | - Ping Xin
- Division of Cardiology, Shanghai Sixth Hospital, Shanghai Jiao Tong University School of Medicine, State Key Discipline Division, Shanghai, People's of Republic of China
| | - Mingya Liu
- Division of Cardiology, Shanghai Sixth Hospital, Shanghai Jiao Tong University School of Medicine, State Key Discipline Division, Shanghai, People's of Republic of China
| | - Jingbo Li
- Division of Cardiology, Shanghai Sixth Hospital, Shanghai Jiao Tong University School of Medicine, State Key Discipline Division, Shanghai, People's of Republic of China
| | - Meng Wei
- Division of Cardiology, Shanghai Sixth Hospital, Shanghai Jiao Tong University School of Medicine, State Key Discipline Division, Shanghai, People's of Republic of China
- * E-mail: (WZ); (MW)
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32
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Identification of antibody-interacting proteins that contribute to the production of recombinant antibody in mammalian cells. Appl Microbiol Biotechnol 2012; 96:971-9. [DOI: 10.1007/s00253-012-4132-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2012] [Revised: 04/20/2012] [Accepted: 04/22/2012] [Indexed: 10/28/2022]
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33
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Zhang C, Gao J, Zhang L. Effect of laminarin on the expression of GRP78 and GRP94 in rat after unilateral ureteral obstruction. ACTA ACUST UNITED AC 2012; 46:267-72. [DOI: 10.3109/00365599.2012.663405] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Cui Zhang
- College of Pharmacy, Harbin University of Commerce,
Harbin, Heilongjiang Province, PR China
| | - Jing Gao
- College of Pharmacy, Harbin University of Commerce,
Harbin, Heilongjiang Province, PR China
| | - Lan Zhang
- College of Pharmacy, Harbin University of Commerce,
Harbin, Heilongjiang Province, PR China
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34
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Wang Y, Bruce AT, Tu C, Ma K, Zeng L, Zheng P, Liu Y, Liu Y. Protein aggregation of SERCA2 mutants associated with Darier disease elicits ER stress and apoptosis in keratinocytes. J Cell Sci 2011; 124:3568-80. [PMID: 22045735 DOI: 10.1242/jcs.084053] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Mutations in sarcoplasmic/endoplasmic reticulum calcium ATPase 2 (SERCA2) underlie Darier disease (DD), a dominantly inherited skin disorder characterized by loss of keratinocyte adhesion (acantholysis) and abnormal keratinization (dyskeratosis) resulting in characteristic mucocutaneous abnormalities. However, the molecular pathogenic mechanism by which these changes influence keratinocyte adhesion and viability remains unknown. We show here that SERCA2 protein is extremely sensitive to endoplasmic reticulum (ER) stress, which typically results in aggregation and insolubility of the protein. Depletion of ER calcium stores is not necessary for the aggregation but accelerates the progression. Systematic analysis of diverse mutants identical to those found in DD patients demonstrated that the ER stress initiator is the SERCA2 mutant protein itself. These SERCA2 proteins were found to be less soluble, to aggregate and to be more polyubiquitinylated. After transduction into primary human epidermal keratinocytes, mutant SERCA2 aggregates elicited ER stress, caused increased numbers of cells to round up and detach from the culture plate, and induced apoptosis. These mutant induced events were exaggerated by increased ER stress. Furthermore, knockdown SERCA2 in keratinocytes rendered the cells resistant to apoptosis induction. These features of SERCA2 and its mutants establish a mechanistic base to further elucidate the molecular pathogenesis underlying acantholysis and dyskeratosis in DD.
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Affiliation(s)
- Yin Wang
- Department of Surgery, Division of Immunotherapy, Section of General Surgery, University of Michigan Medical Center, Ann Arbor, MI 48109, USA.
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35
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Vandecaetsbeek I, Vangheluwe P, Raeymaekers L, Wuytack F, Vanoevelen J. The Ca2+ pumps of the endoplasmic reticulum and Golgi apparatus. Cold Spring Harb Perspect Biol 2011; 3:cshperspect.a004184. [PMID: 21441596 DOI: 10.1101/cshperspect.a004184] [Citation(s) in RCA: 154] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The various splice variants of the three SERCA- and the two SPCA-pump genes in higher vertebrates encode P-type ATPases of the P(2A) group found respectively in the membranes of the endoplasmic reticulum and the secretory pathway. Of these, SERCA2b and SPCA1a represent the housekeeping isoforms. The SERCA2b form is characterized by a luminal carboxy terminus imposing a higher affinity for cytosolic Ca(2+) compared to the other SERCAs. This is mediated by intramembrane and luminal interactions of this extension with the pump. Other known affinity modulators like phospholamban and sarcolipin decrease the affinity for Ca(2+). The number of proteins reported to interact with SERCA is rapidly growing. Here, we limit the discussion to those for which the interaction site with the ATPase is specified: HAX-1, calumenin, histidine-rich Ca(2+)-binding protein, and indirectly calreticulin, calnexin, and ERp57. The role of the phylogenetically older and structurally simpler SPCAs as transporters of Ca(2+), but also of Mn(2+), is also addressed.
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Affiliation(s)
- Ilse Vandecaetsbeek
- Laboratory of Ca-transport ATPases, Department of Molecular Cell Biology, K.U. Leuven, Leuven, Belgium
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Xin W, Lu X, Li X, Niu K, Cai J. Attenuation of endoplasmic reticulum stress-related myocardial apoptosis by SERCA2a gene delivery in ischemic heart disease. Mol Med 2010; 17:201-10. [PMID: 21152695 DOI: 10.2119/molmed.2010.00197] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2010] [Accepted: 12/03/2010] [Indexed: 11/06/2022] Open
Abstract
Previous studies suggested that endoplasmic reticulum (ER) stress-associated apoptosis plays an important role in the pathogenesis of ischemic heart disease. Gene transfer of sarco/endoplasmic reticulum Ca(2+) ATPase 2a (SERCA2a) attenuates myocardial apoptosis in a variety of heart failure models. This study is to investigate the effects of SERCA2a gene delivery on the myocardial apoptosis and ER stress pathway in a porcine ischemic heart disease model. Eighteen pigs were either subjected to ameroid implantation in the coronary artery or sham operation. Eight wks after gene delivery, the protein level and activity of SERCA2a were measured. Myocardial apoptosis was determined using terminal deoxynucleotidyl transferase-mediated DNA nick-end labeling assay. Regional myocardial perfusion and function were evaluated by (99m)Tc-sestamibi ((99m)Tc-MIBI) single photon emission computed tomography and echocardiography. The ER stress signaling was assessed by Western blot. SERCA2a protein level and activity were significantly decreased in the ischemic myocardium and restored to normal after SERCA2a gene transfer. Restoration of SERCA2a expression significantly improved the cardiac function, although no improvement of regional myocardial perfusion was detected. Restoration of SERCA2a significantly attenuated myocardial apoptosis and reversed the activation of unfolded protein response (UPR) pathway and the ER stress-associated apoptosis pathways. These findings demonstrate a robust role of SERCA2a in attenuation of ischemic myocardial apoptosis, correlating with reverse activation of the ER stress-associated apoptosis pathways, suggesting that the beneficial effects of SERCA2a gene transfer may involve the attenuation of ER stress-associated myocardial apoptosis.
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Affiliation(s)
- Wei Xin
- First Department of Geriatric Cardiology, Chinese PLA General Hospital, Beijing, China
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Dong Y, Zhang M, Wang S, Liang B, Zhao Z, Liu C, Wu M, Choi HC, Lyons TJ, Zou MH. Activation of AMP-activated protein kinase inhibits oxidized LDL-triggered endoplasmic reticulum stress in vivo. Diabetes 2010; 59:1386-96. [PMID: 20299472 PMCID: PMC2874699 DOI: 10.2337/db09-1637] [Citation(s) in RCA: 159] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2009] [Accepted: 02/24/2010] [Indexed: 01/18/2023]
Abstract
OBJECTIVE The oxidation of LDLs is considered a key step in the development of atherosclerosis. How LDL oxidation contributes to atherosclerosis remains poorly defined. Here we report that oxidized and glycated LDL (HOG-LDL) causes aberrant endoplasmic reticulum (ER) stress and that the AMP-activated protein kinase (AMPK) suppressed HOG-LDL-triggered ER stress in vivo. RESEARCH DESIGN AND METHODS ER stress markers, sarcoplasmic/endoplasmic reticulum Ca(2+) ATPase (SERCA) activity and oxidation, and AMPK activity were monitored in cultured bovine aortic endothelial cells (BAECs) exposed to HOG-LDL or in isolated aortae from mice fed an atherogenic diet. RESULTS Exposure of BAECs to clinically relevant concentrations of HOG-LDL induced prolonged ER stress and reduced SERCA activity but increased SERCA oxidation. Chronic administration of Tempol (a potent antioxidant) attenuated both SERCA oxidation and aberrant ER stress in mice fed a high-fat diet in vivo. Likewise, AMPK activation by pharmacological (5'-aminoimidazole-4-carboxymide-1-beta-d-ribofuranoside, metformin, and statin) or genetic means (adenoviral overexpression of constitutively active AMPK mutants) significantly mitigated ER stress and SERCA oxidation and improved the endothelium-dependent relaxation in isolated mouse aortae. Finally, Tempol administration markedly attenuated impaired endothelium-dependent vasorelaxation, SERCA oxidation, ER stress, and atherosclerosis in ApoE(-/-) and ApoE(-/-)/AMPKalpha2(-/-) fed a high-fat diet. CONCLUSION We conclude that HOG-LDL, via enhanced SERCA oxidation, causes aberrant ER stress, endothelial dysfunction, and atherosclerosis in vivo, all of which are inhibited by AMPK activation.
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Affiliation(s)
- Yunzhou Dong
- Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; and
| | - Miao Zhang
- Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; and
| | - Shuangxi Wang
- Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; and
| | - Bin Liang
- Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; and
| | - Zhengxing Zhao
- Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; and
| | - Chao Liu
- Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; and
| | - Mingyuan Wu
- Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; and
| | - Hyoung Chul Choi
- Department of Pharmacology, College of Medicine, Yeungnam University, Daegu, Korea
| | - Timothy J. Lyons
- Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; and
| | - Ming-Hui Zou
- Section of Endocrinology and Diabetes, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma; and
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Vandecaetsbeek I, Raeymaekers L, Wuytack F, Vangheluwe P. Factors controlling the activity of the SERCA2a pump in the normal and failing heart. Biofactors 2009; 35:484-99. [PMID: 19904717 DOI: 10.1002/biof.63] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Heart failure is the leading cause of death in western countries and is often associated with impaired Ca(2+) handling in the cardiomyocyte. In fact, cardiomyocyte relaxation and contraction are tightly controlled by the activity of the cardiac sarco(endo)plasmic reticulum (ER/SR) Ca(2+) pump SERCA2a, pumping Ca(2+) from the cytosol into the lumen of the ER/SR. This review addresses three important facets that control the SERCA2 activity in the heart. First, we focus on the alternative splicing of the SERCA2 messenger, which is strictly regulated in the developing heart. This splicing controls the formation of three SERCA2 splice variants with different enzymatic properties. Second, we will discuss the role and regulation of SERCA2a activity in the normal and failing heart. The two well-studied Ca(2+) affinity modulators phospholamban and sarcolipin control the activity of SERCA2a within a narrow window. An aberrantly high or low Ca(2+) affinity is often observed in and may even trigger cardiac failure. Correcting SERCA2a activity might therefore constitute a therapeutic approach to improve the contractility of the failing heart. Finally, we address the controversies and unanswered questions of other putative regulators of the cardiac Ca(2+) pump, such as sarcalumenin, HRC, S100A1, Bcl-2, HAX-1, calreticulin, calnexin, ERp57, IRS-1, and -2.
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Affiliation(s)
- Ilse Vandecaetsbeek
- Department of Molecular Cell Biology, Laboratory of Ca(2+)-transport ATPases, K.U.Leuven, Leuven, Belgium
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Bobe R, Bredoux R, Corvazier E, Lacabaratz-Porret C, Martin V, Kovács T, Enouf J. How many Ca2+ATPase isoforms are expressed in a cell type? A growing family of membrane proteins illustrated by studies in platelets. Platelets 2009; 16:133-50. [PMID: 16011958 DOI: 10.1080/09537100400016847] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Ca(2+) signaling plays a key role in normal and abnormal platelet functions. Understanding platelet Ca(2+) signaling requires the knowledge of proteins involved in this process. Among these proteins are Ca(2+)ATPases or Ca(2+) pumps that deplete the cytosol of Ca(2+) ions. Here, we will particularly focus on two Ca(2+) pump families: the plasma membrane Ca(2+)ATPases (PMCAs) that extrude cytosolic Ca(2+) towards the extracellular medium and the sarco/endoplasmic reticulum Ca(2+)ATPases (SERCAs) that pump Ca(2+) into the endoplasmic reticulum (ER). In the present review, we will summarize data on platelet Ca(2+)ATPases including their identification and biogenesis. First of all, we will present the Ca(2+)ATPase genes and their isoforms expressed in platelets. We will especially focus on a member of the SERCA family, SERCA3, recently found to give rise to a number of species-specific isoforms. Next, we will describe the differences in Ca(2+)ATPase patterns observed in human and rat platelets. Last, we will analyze how the expression of Ca(2+)ATPase isoforms changes during megakaryocytic maturation and show that megakaryocytopoiesis is associated with a profound reorganization of the expression and/or activity of Ca(2+)ATPases. Taken together, these data provide new aspects of investigations to better understand normal and abnormal platelet Ca(2+) signaling.
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Affiliation(s)
- R Bobe
- INSERM U.689 E6, IFR139 Lariboisière, Hôpital Lariboisière, 8 Rue Guy Patin, 75475 Paris Cedex 10, France
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40
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Hiss DC, Gabriels GA. Implications of endoplasmic reticulum stress, the unfolded protein response and apoptosis for molecular cancer therapy. Part I: targeting p53, Mdm2, GADD153/CHOP, GRP78/BiP and heat shock proteins. Expert Opin Drug Discov 2009; 4:799-821. [PMID: 23496268 DOI: 10.1517/17460440903052559] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND In eukaryotes, endoplasmic reticulum stress (ERS) and the unfolded protein response (UPR) are coordinately regulated to maintain steady-state levels and activities of various cellular proteins to ensure cell survival. OBJECTIVE This review (Part I of II) focuses on specific ERS and UPR signalling regulators, their expression in the cancer phenotype and apoptosis, and proposes how their implication in these processes can be rationalised into proteasome inhibition, apoptosis induction and the development of more efficacious targeted molecular cancer therapies. METHOD In this review, we contextualise many ERS and UPR client proteins that are deregulated or mutated in cancers and show links between ERS and the UPR, their implication in oncogenic transformation, tumour progression and escape from immune surveillance, apoptosis inhibition, angiogenesis, metastasis, acquired drug resistance and poor cancer prognosis. CONCLUSION Evasion of programmed cell death or apoptosis is a hallmark of cancer that enables tumour cells to proliferate uncontrollably. Successful eradication of cancer cells through targeting ERS- and UPR-associated proteins to induce apoptosis is currently being pursued as a central tenet of anticancer drug discovery.
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Affiliation(s)
- Donavon C Hiss
- Head, Molecular Oncology Research Programme University of the Western Cape, Department of Medical BioSciences, Bellville, 7535, South Africa +27 21 959 2334 ; +27 21 959 1563 ;
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Zhao M, Brown DM, Maccallum J, Proudfoot L. Effect of Nippostrongylus brasiliensis L3 ES on inflammatory mediator gene transcription in lipopolysaccharide lung inflammation. Parasite Immunol 2009; 31:50-6. [PMID: 19121083 DOI: 10.1111/j.1365-3024.2008.01073.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The anti-inflammatory properties of parasitic helminths have been largely linked to their excretory-secretory (ES) products. Some studies have noted a lack of TNF-alpha production and limited recruitment of neutrophils into the lungs after Nippostrongylus brasiliensis infection. We previously reported that instillation of ES from L3 larvae of N. brasiliensis to the lungs could inhibit the recruitment of neutrophils on a background of LPS-induced inflammation. A similar reduction in neutrophil recruitment was observed in this study. This reduction was associated with the significant inhibition in gene transcription of the adhesion molecule, ICAM-1, and the chemokine, MIP-2 in bronchoalveolar lavage (BAL) cells. The LPS-stimulated gene transcription of the pro-inflammatory cytokines TNF-alpha and IL-1beta was also significantly reduced by L3 ES. Inducible nitric oxide synthase (iNOS) is normally elevated in classically activated macrophages, however, in this case gene transcription of iNOS was inhibited by L3 ES and may suggest a phenotype change to anti-inflammatory. The general inhibition of pro-inflammatory mediators observed in this study suggests that infective stage L3 larvae excrete and/or secrete inhibitory products capable of modifying the normally potent LPS inflammatory response.
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Affiliation(s)
- M Zhao
- School of Life Sciences, Napier University, Edinburgh, UK
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Chami M, Oulès B, Szabadkai G, Tacine R, Rizzuto R, Paterlini-Bréchot P. Role of SERCA1 truncated isoform in the proapoptotic calcium transfer from ER to mitochondria during ER stress. Mol Cell 2009; 32:641-51. [PMID: 19061639 DOI: 10.1016/j.molcel.2008.11.014] [Citation(s) in RCA: 177] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2007] [Revised: 08/05/2008] [Accepted: 11/14/2008] [Indexed: 10/21/2022]
Abstract
Among the new players at the endoplasmic reticulum (ER)-mitochondria interface regulating interorganelle calcium signaling, those specifically involved during ER stress are not known at present. We report here that the truncated variant of the sarcoendoplasmic reticulum Ca(2+)-ATPase 1 (S1T) amplifies ER stress through the PERK-eIF2alpha-ATF4-CHOP pathway. S1T, which is localized in the ER-mitochondria microdomains, determines ER Ca(2+) depletion due to increased Ca(2+) leak, an increased number of ER-mitochondria contact sites, and inhibition of mitochondria movements. This leads to increased Ca(2+) transfer to mitochondria in both resting and stimulated conditions and activation of the mitochondrial apoptotic pathway. Interestingly, S1T knockdown was shown to prevent ER stress, mitochondrial Ca(2+) overload, and subsequent apoptosis. Thus, by bridging ER stress to apoptosis through increased ER-mitochondria Ca(2+) transfer, S1T acts as an essential determinant of cellular fate.
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Aspergillus parasiticus crzA, which encodes calcineurin response zinc-finger protein, is required for aflatoxin production under calcium stress. Int J Mol Sci 2008; 9:2027-2043. [PMID: 19325734 PMCID: PMC2635607 DOI: 10.3390/ijms9102027] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2008] [Revised: 10/27/2008] [Accepted: 10/28/2008] [Indexed: 11/17/2022] Open
Abstract
Two morphologically different Aspergillus parasiticus strains, one producing aflatoxins, abundant conidia but few sclerotia (BN9) and the other producing O-methyl-sterimatocystin (OMST), copious sclerotia but a low number of conidia (RH), were used to assess the role of crzA which encodes a putative calcium-signaling pathway regulatory protein. Under standard culture conditions, BN9ΔcrzA mutants conidiated normally but decreased slightly in radial growth, regardless of illumination conditions. RHΔcrzA mutants produced only conidia under light and showed decreased conidiation and delayed sclerotial formation in the dark. Regulation of conidiation of both A. parasiticus strains by light was independent of crzA. Increased concentrations of lithium, sodium, and potassium impaired conidiation and sclerotial formation of the RHΔcrzA mutants but they did not affect conidiation of the BN9ΔcrzA mutants. Vegetative growth and asexual development of both ΔcrzA mutants were hypersensitive to increased calcium concentrations. Calcium supplementation (10 mM) resulted in 3-fold and 2-fold decreases in the relative expression of the endoplasmic reticulum calcium ATPase 2 gene in the BN9 and RH parental strains, respectively, but changes in both ΔcrzA mutants were less significant. Compared to the parental strains, the ΔcrzA mutants barely produced aflatoxins or OMST after the calcium supplementation. The relative expression levels of aflatoxin biosynthesis genes, nor1, ver1, and omtA, in both ΔcrzA mutants were decreased significantly, but the decreases in the parental strains were at much lower extents. CrzA is required for growth and development and for aflatoxin biosynthesis under calcium stress conditions.
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A pharmacoproteomic approach implicates eukaryotic elongation factor 2 kinase in ER stress-induced cell death. Cell Death Differ 2008; 15:589-99. [PMID: 18188169 DOI: 10.1038/sj.cdd.4402296] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Apoptosis triggered by endoplasmic reticulum (ER) stress has been implicated in many diseases but its cellular regulation remains poorly understood. Previously, we identified salubrinal (sal), a small molecule that protects cells from ER stress-induced apoptosis by selectively activating a subset of endogenous ER stress-signaling events. Here, we use sal as a probe in a proteomic approach to discover new information about the endogenous cellular response to ER stress. We show that sal induces phosphorylation of the translation elongation factor eukaryotic translation elongation factor 2 (eEF-2), an event that depends on eEF-2 kinase (eEF-2K). ER stress itself also induces eEF-2K-dependent eEF-2 phosphorylation, and this pathway promotes translational arrest and cell death in this context, identifying eEF-2K as a hitherto unknown regulator of ER stress-induced apoptosis. Finally, we use both sal and ER stress models to show that eEF-2 phosphorylation can be activated by at least two signaling mechanisms. Our work identifies eEF-2K as a new component of the ER stress response and underlines the utility of novel small molecules in discovering new cell biology.
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Bigelow DJ. Nitrotyrosine-modified SERCA2: a cellular sensor of reactive nitrogen species. Pflugers Arch 2008; 457:701-10. [DOI: 10.1007/s00424-007-0429-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2007] [Revised: 12/06/2007] [Accepted: 12/10/2007] [Indexed: 12/31/2022]
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Insulin induces chaperone and CHOP gene expressions in adipocytes. Biochem Biophys Res Commun 2007; 365:826-32. [PMID: 18035047 DOI: 10.1016/j.bbrc.2007.11.045] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2007] [Accepted: 11/13/2007] [Indexed: 11/21/2022]
Abstract
Adipocyte secretes bioactive proteins called adipocytokines, and biosynthesis of secretory proteins requires molecular chaperones and folding enzymes in endoplasmic reticulum (ER). ER chaperones are known to be induced by unfolded protein response (UPR) and growth factors, however, it has not been determined how ER chaperones expression is regulated in adipocytes. Here we show that insulin treatment induced GRP78 and ERO1L mRNA levels in 3T3-L1 adipocytes. Insulin also upregulated CHOP mRNA levels, but did not induce phosphorylation of eIF2alpha. Pretreatment with insulin protected 3T3-L1 adipocytes against thapsigargin-mediated phosphorylation of eIF2alpha but did not against DTT-mediated one. In vivo mice study showed that GRP78 and CHOP expressions were regulated by feeding conditions. These results suggest that insulin signaling is important to induce mRNA expressions of GRP78 and CHOP, and may have a protective role against UPR.
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Seiderer J, Dambacher J, Kühnlein B, Pfennig S, Konrad A, Török HP, Haller D, Göke B, Ochsenkühn T, Lohse P, Brand S. The role of the selenoprotein S (SELS) gene -105G>A promoter polymorphism in inflammatory bowel disease and regulation of SELS gene expression in intestinal inflammation. ACTA ACUST UNITED AC 2007; 70:238-46. [PMID: 17661913 DOI: 10.1111/j.1399-0039.2007.00888.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Recently, a -105G>A promoter polymorphism coding for selenoprotein S (SELS) has been shown to increase proinflammatory cytokine expression. We, therefore, analyzed SELS expression and potential phenotypic consequences of the -105G>A polymorphism in patients with inflammatory bowel disease (IBD). SELS mRNA was measured by quantitative polymerase chain reaction (PCR) in intestinal epithelial cells (IEC) after stimulation with proinflammatory cytokines and in human colonic biopsies of IBD patients as well as in murine models of ileitis and murine cytomegalovirus (MCMV) colitis. Genomic DNA from 563 individuals (Crohn's disease: n = 205; ulcerative colitis: n = 154; controls: n = 204) was analyzed for the presence of the SELS-105G>A polymorphism and the three nucleotide-binding oligomerization domain-containing protein 2 (NOD2)/caspase recruitment domain-containing protein 15 (CARD15) variants p.Arg702Trp, p.Gly908Arg and p.Leu1007fsX1008. SELS mRNA expression was increased in IEC after stimulation with proinflammatory cytokines, while its expression was not significantly altered in murine ileitis and MCMV colitis and in inflamed ileal and colonic lesions in IBD patients compared with normal controls. The SELS-105G>A polymorphism was observed with similar frequencies in IBD patients and controls and was not associated with a certain disease phenotype or serum tumor necrosis factor alpha (TNF-alpha) levels in these patients. Medium serum TNF-alpha was 1.27 pg/ml in IBD patients, while none of the controls had TNF-alpha concentrations above the detection threshold (P < 0.0001). SELS mRNA expression is upregulated by proinflammatory cytokines in IECs but the SELS-105G>A polymorphism is not associated with IBD susceptibility and does not contribute to a certain disease phenotype or increased TNF-alpha levels in IBD patients.
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Affiliation(s)
- J Seiderer
- Department of Internal Medicine II-Grosshadern, University of Munich, Marchioninistrasse 15, D-81377 Munich, Germany
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Zylinska L, Kozaczuk A, Szemraj J, Kargas C, Kowalska I. Functional importance of PMCA isoforms in growth and development of PC12 cells. Ann N Y Acad Sci 2007; 1099:254-69. [PMID: 17446466 DOI: 10.1196/annals.1387.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Intracellular Ca2+ in neuronal cells is an essential regulatory ion responsible for excitability, synaptic plasticity, and neurite outgrowth. Plasma membrane calcium ATPase (PMCA) is the most sensitive enzyme in decreasing of the Ca2+ concentration. The diverse PMCA isoforms composition in the membranes suggests their specific function in the cell, and whereas PMCA1 and 4 appear to be ubiquitous, PMCA2 and 3 are characteristic isoforms for excitable cells. The aim of our study was to elucidate if and how the elimination of neuron-specific isoforms affects the pattern of cell growth and development. We have obtained stable-transfected PC12 cell lines with a suppressed expression of PMCA2, PMCA3, or both neuron-specific isoforms. The modified profile of PMCA generated considerable changes in morphology of examined PC12 lines, suggesting the activation of a differentiation process to pseudoneuronal phenotype. Experiments with Fura-2/AM-loaded cells revealed an increased cytosolic Ca2+ concentration in the cell lines with blocked PMCA2 isoform. The suppression of PMCA2 concomitantly altered expression of sarco/endoplasmic Ca2+-ATPase 2 isoform (SERCA2) at the protein level. Comparative flow cytometry analysis, using Annexin V/PI conjugate, showed the difference in the mean percentage of apoptotic cells in modified PC12 lines. Our data suggest that specific PMCA isoforms presence can regulate the intact cell development; however, it may involve multiple unidentified yet signaling pathways.
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Affiliation(s)
- Ludmila Zylinska
- Department of Molecular Neurochemistry, Medical University, 6/8 Mazowiecka Street, 92-215 Lodz, Poland.
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Lee DI, Sumbilla C, Lee M, Natesavelalar C, Klein MG, Ross DD, Inesi G, Hussain A. Mechanisms of resistance and adaptation to thapsigargin in androgen-independent prostate cancer PC3 and DU145 cells. Arch Biochem Biophys 2007; 464:19-27. [PMID: 17475205 DOI: 10.1016/j.abb.2007.03.040] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2007] [Revised: 03/29/2007] [Accepted: 03/30/2007] [Indexed: 10/23/2022]
Abstract
Cells with increasing resistance to the sarcoplasmic/endoplasmic reticulum Ca(2+)-ATPase (SERCA) inhibitor thapsigargin (TG), ranging from 60-fold (PC3/TG(10) cells) to 1350-fold (PC3/TG(2000) cells), were derived from PC3 cells. SERCA2 is overexpressed in all PC3/TG cells but retains sensitivity to TG. siRNA-mediated downregulation of SERCA completely or partially reverses TG resistance in PC3/TG(10) or PC3/TG(2000) cells, respectively; thus SERCA overexpression mediates resistance in PC3/TG(10) cells but is not the only resistance mechanism in PC3/TG(2000) cells. By contrast, SERCA is not overexpressed in TG-resistant DU145/TG cells derived from DU145 cells. DU145/TG cells retain resistance while in PC3/TG cells resistance decreases upon removal of TG selection. The transport proteins PGP/BCRP/MRP1 and anti-apoptotic proteins Bcl2/Bcl(XL) are not involved in mediating resistance in either cell line. PARP and caspase 3 cleavage in response to other drugs demonstrate that the apoptotic pathways tested remain intact in these cells. Further, no cross-resistance occurs to other drugs. Thus, novel TG-specific resistance mechanisms are recruited by these cancer cells.
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Affiliation(s)
- Dong I Lee
- Department of Biochemistry and Molecular Biology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
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Decca MB, Carpio MA, Bosc C, Galiano MR, Job D, Andrieux A, Hallak ME. Post-translational arginylation of calreticulin: a new isospecies of calreticulin component of stress granules. J Biol Chem 2007; 282:8237-45. [PMID: 17197444 PMCID: PMC2702537 DOI: 10.1074/jbc.m608559200] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Post-translational arginylation consists of the covalent union of an arginine residue to a Glu, Asp, or Cys amino acid at the N-terminal position of proteins. This reaction is catalyzed by the enzyme arginyl-tRNA protein transferase. Using mass spectrometry, we have recently demonstrated in vitro the post-translational incorporation of arginine into the calcium-binding protein calreticulin (CRT). To further study arginylated CRT we raised an antibody against the peptide (RDPAIYFK) that contains an arginine followed by the first 7 N-terminal amino acids of mature rat CRT. This antibody specifically recognizes CRT obtained from rat soluble fraction that was arginylated in vitro and also recognizes endogenous arginylated CRT from NIH 3T3 cells in culture, indicating that CRT arginylation takes place in living cells. Using this antibody we found that arginylation of CRT is Ca2+-regulated. In vitro and in NIH 3T3 cells in culture, the level of arginylated CRT increased with the addition of a Ca2+ chelator to the medium, whereas a decreased arginine incorporation into CRT was found in the presence of Ca2+. The arginylated CRT was observed in the cytosol, in contrast to the non-arginylated CRT that is in the endoplasmic reticulum. Under stress conditions, arginylated CRT was found associated to stress granules. These results suggest that CRT arginylation occurs in the cytosolic pool of mature CRT (defined by an Asp acid N-terminal) that is probably retrotranslocated from the endoplasmic reticulum.
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Affiliation(s)
- Maria B. Decca
- Centro de Investigaciones en Quimica Biologica de Cordoba
Universidad Nacional de CordobaAR
| | - Marcos A. Carpio
- Centro de Investigaciones en Quimica Biologica de Cordoba
Universidad Nacional de CordobaAR
| | - Christophe Bosc
- Organisation Fonctionnelle du Cytosquelette
INSERM : U366Universite Joseph Fourier - Grenoble ICEA : DSV/IRTSVIFR2717, Rue Des Martyrs
38054 GRENOBLE CEDEX 9,FR
| | - Mauricio R. Galiano
- Centro de Investigaciones en Quimica Biologica de Cordoba
Universidad Nacional de CordobaAR
| | - Didier Job
- Organisation Fonctionnelle du Cytosquelette
INSERM : U366Universite Joseph Fourier - Grenoble ICEA : DSV/IRTSVIFR2717, Rue Des Martyrs
38054 GRENOBLE CEDEX 9,FR
| | - Annie Andrieux
- Organisation Fonctionnelle du Cytosquelette
INSERM : U366Universite Joseph Fourier - Grenoble ICEA : DSV/IRTSVIFR2717, Rue Des Martyrs
38054 GRENOBLE CEDEX 9,FR
| | - Marta E. Hallak
- Centro de Investigaciones en Quimica Biologica de Cordoba
Universidad Nacional de CordobaAR
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