1
|
Aguayo-Ortiz R, Espinoza-Fonseca LM. Linking Biochemical and Structural States of SERCA: Achievements, Challenges, and New Opportunities. Int J Mol Sci 2020; 21:ijms21114146. [PMID: 32532023 PMCID: PMC7313052 DOI: 10.3390/ijms21114146] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/05/2020] [Accepted: 06/08/2020] [Indexed: 02/07/2023] Open
Abstract
Sarcoendoplasmic reticulum calcium ATPase (SERCA), a member of the P-type ATPase family of ion and lipid pumps, is responsible for the active transport of Ca2+ from the cytoplasm into the sarcoplasmic reticulum lumen of muscle cells, into the endoplasmic reticulum (ER) of non-muscle cells. X-ray crystallography has proven to be an invaluable tool in understanding the structural changes of SERCA, and more than 70 SERCA crystal structures representing major biochemical states (defined by bound ligand) have been deposited in the Protein Data Bank. Consequently, SERCA is one of the best characterized components of the calcium transport machinery in the cell. Emerging approaches in the field, including spectroscopy and molecular simulation, now help integrate and interpret this rich structural information to understand the conformational transitions of SERCA that occur during activation, inhibition, and regulation. In this review, we provide an overview of the crystal structures of SERCA, focusing on identifying metrics that facilitate structure-based categorization of major steps along the catalytic cycle. We examine the integration of crystallographic data with different biophysical approaches and computational methods to link biochemical and structural states of SERCA that are populated in the cell. Finally, we discuss the challenges and new opportunities in the field, including structural elucidation of functionally important and novel regulatory complexes of SERCA, understanding the structural basis of functional divergence among homologous SERCA regulators, and bridging the gap between basic and translational research directed toward therapeutic modulation of SERCA.
Collapse
|
2
|
Papp B, Launay S, Gélébart P, Arbabian A, Enyedi A, Brouland JP, Carosella ED, Adle-Biassette H. Endoplasmic Reticulum Calcium Pumps and Tumor Cell Differentiation. Int J Mol Sci 2020; 21:ijms21093351. [PMID: 32397400 PMCID: PMC7247589 DOI: 10.3390/ijms21093351] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 05/01/2020] [Accepted: 05/02/2020] [Indexed: 12/21/2022] Open
Abstract
Endoplasmic reticulum (ER) calcium homeostasis plays an essential role in cellular calcium signaling, intra-ER protein chaperoning and maturation, as well as in the interaction of the ER with other organelles. Calcium is accumulated in the ER by sarco/endoplasmic reticulum calcium ATPases (SERCA enzymes) that generate by active, ATP-dependent transport, a several thousand-fold calcium ion concentration gradient between the cytosol (low nanomolar) and the ER lumen (high micromolar). SERCA enzymes are coded by three genes that by alternative splicing give rise to several isoforms, which can display isoform-specific calcium transport characteristics. SERCA expression levels and isoenzyme composition vary according to cell type, and this constitutes a mechanism whereby ER calcium homeostasis is adapted to the signaling and metabolic needs of the cell, depending on its phenotype, its state of activation and differentiation. As reviewed here, in several normal epithelial cell types including bronchial, mammary, gastric, colonic and choroid plexus epithelium, as well as in mature cells of hematopoietic origin such as pumps are simultaneously expressed, whereas in corresponding tumors and leukemias SERCA3 expression is selectively down-regulated. SERCA3 expression is restored during the pharmacologically induced differentiation of various cancer and leukemia cell types. SERCA3 is a useful marker for the study of cell differentiation, and the loss of SERCA3 expression constitutes a previously unrecognized example of the remodeling of calcium homeostasis in tumors.
Collapse
Affiliation(s)
- Bela Papp
- Institut National de la Santé et de la Recherche Médicale, UMR U976, Institut Saint-Louis, 75010 Paris, France
- Institut de Recherche Saint-Louis, Hôpital Saint-Louis, Université de Paris, 75010 Paris, France
- CEA, DRF-Institut Francois Jacob, Department of Hemato-Immunology Research, Hôpital Saint-Louis, 75010 Paris, France;
- Correspondence: or
| | - Sophie Launay
- EA481, UFR Santé, Université de Bourgogne Franche-Comté, 25000 Besançon, France;
| | - Pascal Gélébart
- Department of Clinical Science-Hematology Section, Haukeland University Hospital, University of Bergen, 5021 Bergen, Norway;
| | - Atousa Arbabian
- Laboratoire d’Innovation Vaccins, Institut Pasteur de Paris, 75015 Paris, France;
| | - Agnes Enyedi
- Second Department of Pathology, Semmelweis University, 1091 Budapest, Hungary;
| | - Jean-Philippe Brouland
- Institut Universitaire de Pathologie, Centre Hospitalier Universitaire Vaudois, 1011 Lausanne, Switzerland;
| | - Edgardo D. Carosella
- CEA, DRF-Institut Francois Jacob, Department of Hemato-Immunology Research, Hôpital Saint-Louis, 75010 Paris, France;
| | - Homa Adle-Biassette
- AP-HP, Service d’Anatomie et Cytologie Pathologiques, Hôpital Lariboisière, 75010 Paris, France;
- Université de Paris, NeuroDiderot, Inserm UMR 1141, 75019 Paris, France
| |
Collapse
|
3
|
Zhang Y, Li F, Liu L, Jiang H, Hu H, Du X, Ge X, Cao J, Wang Y. Salinomycin triggers endoplasmic reticulum stress through ATP2A3 upregulation in PC-3 cells. BMC Cancer 2019; 19:381. [PMID: 31023247 PMCID: PMC6482559 DOI: 10.1186/s12885-019-5590-8] [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: 05/02/2018] [Accepted: 04/09/2019] [Indexed: 02/06/2023] Open
Abstract
Background Salinomycin is a monocarboxylic polyether antibiotic and is a potential chemotherapy drug. Our previous studies showed that salinomycin inhibited cell growth and targeted CSCs in prostate cancer. However, the precise target of salinomycin action is unclear. Methods In this work, we analyzed and identified differentially expressed genes (DEGs) after treatment with or without salinomycin using a gene expression microarray in vitro (PC-3 cells) and in vivo (NOD/SCID mice xenograft model generated from implanted PC-3 cells). Western blotting and immunohistochemical staining were used to analyze the expression of ATP2A3 and endoplasmic reticulum (ER) stress biomarkers. Flow cytometry was used to analyze the cell cycle, apoptosis and intracellular Ca2+ concentration. Results A significantly upregulated gene, ATPase sarcoplasmatic/endoplasmatic reticulum Ca2+ transporting 3 (ATP2A3), was successfully identified. In subsequent studies, we found that ATP2A3 overexpression could trigger ER stress and exert anti-cancer effects in PC-3 and DU145 cells. ATP2A3 was slightly expressed, but the ER stress biomarkers showed strong staining in prostate cancer tissues. We also found that salinomycin could trigger ER stress, which might be related to ATP2A3-mediated Ca2+ release in PC-3 cells. Furthermore, we found that salinomycin-triggered ER stress could promote apoptosis and thus exert anti-cancer effects in prostate cancer cells. Conclusion This study demonstrates that ATP2A3 might be one of the potential targets for salinomycin, which can inhibit Ca2+ release and trigger ER stress to exert anti-cancer effects.
Collapse
Affiliation(s)
- Yunsheng Zhang
- Clinical Research Institute, The Second Affiliated Hospital, University of South China; Clinical Research Center For Breast & Thyroid Disease Prevention In Hunan Province, Hengyang, 421001, People's Republic of China
| | - Fang Li
- College of Nursing, Hunan Polytechnic of Environment and Biology, Hengyang, 421005, People's Republic of China
| | - Luogen Liu
- Clinical Research Institute, The Second Affiliated Hospital, University of South China, Hengyang, 421001, People's Republic of China
| | - Hongtao Jiang
- Department of Urology, The Second Hospital, University of South China, Hengyang, 421001, People's Republic of China
| | - Hua Hu
- Cancer Research Institute, The Second Hospital, University of South China, Hengyang, 421001, People's Republic of China
| | - Xiaobo Du
- Department of Urology, The First People's Hospital Yueyang, Yueyang, 414000, People's Republic of China
| | - Xin Ge
- Clinical Research Institute, The Second Affiliated Hospital, University of South China, Hengyang, 421001, People's Republic of China
| | - Jingsong Cao
- Medical College, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, University of South China, Hengyang, 421001, People's Republic of China
| | - Yi Wang
- Department of Urology, The Second Affiliated Hospital of Hainan Medical University, Haikou 570102; Clinical Research Institute, The Second Affiliated Hospital, University of South China, Hengyang, 421001, People's Republic of China.
| |
Collapse
|
4
|
Lipskaia L, Keuylian Z, Blirando K, Mougenot N, Jacquet A, Rouxel C, Sghairi H, Elaib Z, Blaise R, Adnot S, Hajjar RJ, Chemaly ER, Limon I, Bobe R. Expression of sarco (endo) plasmic reticulum calcium ATPase (SERCA) system in normal mouse cardiovascular tissues, heart failure and atherosclerosis. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2014; 1843:2705-18. [PMID: 25110346 DOI: 10.1016/j.bbamcr.2014.08.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 07/29/2014] [Accepted: 08/01/2014] [Indexed: 11/26/2022]
Abstract
UNLABELLED The sarco(endo)plasmic reticulum Ca(2+)ATPases (SERCA) system, a key regulator of calcium cycling and signaling, is composed of several isoforms. We aimed to characterize the expression of SERCA isoforms in mouse cardiovascular tissues and their modulation in cardiovascular pathologies (heart failure and/or atherosclerosis). Five isoforms (SERCA2a, 2b, 3a, 3b and 3c) were detected in the mouse heart and thoracic aorta. Absolute mRNA quantification revealed SERCA2a as the dominant isoform in the heart (~99%). Both SERCA2 isoforms co-localized in cardiomyocytes (CM) longitudinal sarcoplasmic reticulum (SR), SERCA3b was located at the junctional SR. In the aorta, SERCA2a accounted for ~91% of total SERCA and SERCA2b for ~5%. Among SERCA3, SERCA3b was the most expressed (~3.3%), mainly found in vascular smooth muscle cells (VSMC), along with SERCA2a and 2b. In failing CM, SERCA2a was down-regulated by 2-fold and re-localized from longitudinal to junctional SR. A strong down-regulation of SERCA2a was also observed in atherosclerotic vessels containing mainly synthetic VSMCs. The proportion of both SERCA2b and SERCA3b increased to 9.5% and 8.3%, respectively. IN CONCLUSION 1) SERCA2a is the major isoform in both cardiac and vascular myocytes; 2) the expression of SERCA2a mRNA is ~30 fold higher in the heart compared to vascular tissues; and 3) nearly half the amount of SERCA2a mRNA is measured in both failing cardiomyocytes and synthetic VSMCs compared to healthy tissues, with a relocation of SERCA2a in failing cardiomyocytes. Thus, SERCA2a is the principal regulator of excitation-contraction coupling in both CMs and contractile VSMCs.
Collapse
Affiliation(s)
- Larissa Lipskaia
- Mount Sinai School of Medicine, Cardiovascular Research Center, NY, USA; Inserm, U955, Equipe 8, Créteil, France; Université Paris-Est, Faculté de médecine, Créteil, France
| | - Zela Keuylian
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 8256 B2A, IBPS, F-75005, Paris, France; INSERM U1155, Tenon Hospital, Paris, France
| | - Karl Blirando
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 8256 B2A, IBPS, F-75005, Paris, France
| | | | | | - Clotilde Rouxel
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 8256 B2A, IBPS, F-75005, Paris, France
| | - Haifa Sghairi
- INSERM U770, Le Kremlin-Bicetre, France; Université Paris-sud, Le Kremlin-Bicetre, France
| | - Ziane Elaib
- INSERM U770, Le Kremlin-Bicetre, France; Université Paris-sud, Le Kremlin-Bicetre, France
| | - Regis Blaise
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 8256 B2A, IBPS, F-75005, Paris, France
| | - Serge Adnot
- Inserm, U955, Equipe 8, Créteil, France; Université Paris-Est, Faculté de médecine, Créteil, France
| | - Roger J Hajjar
- Mount Sinai School of Medicine, Cardiovascular Research Center, NY, USA
| | - Elie R Chemaly
- Mount Sinai School of Medicine, Cardiovascular Research Center, NY, USA; Department of Biomedical Engineering, University of Virginia, School of Medicine, Charlottesville, VA, USA
| | - Isabelle Limon
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 8256 B2A, IBPS, F-75005, Paris, France
| | - Regis Bobe
- INSERM U770, Le Kremlin-Bicetre, France; Université Paris-sud, Le Kremlin-Bicetre, France.
| |
Collapse
|
5
|
Lipskaia L, Hadri L, Lopez JJ, Hajjar RJ, Bobe R. Benefit of SERCA2a gene transfer to vascular endothelial and smooth muscle cells: a new aspect in therapy of cardiovascular diseases. Curr Vasc Pharmacol 2014; 11:465-79. [PMID: 23905641 DOI: 10.2174/1570161111311040010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Revised: 01/29/2013] [Accepted: 02/13/2013] [Indexed: 01/16/2023]
Abstract
Despite the great progress in cardiovascular health and clinical care along with marked decline in morbidity and mortality, cardiovascular diseases remain the leading causes of death and disability in the developed world. New therapeutic approaches, targeting not only systematic but also causal dysfunction, are ultimately needed to provide a valuable alternative for treatment of complex cardiovascular diseases. In heart failure, there are currently a number of trials that have been either completed or are ongoing targeting the sarcoplasmic reticulum calcium ATPase pump (SERCA2a) gene transfer in the context of heart failure. Recently, a phase 2 trial was completed, demonstrating safety and suggested benefit of adeno-associated virus type 1/SERCA2a gene transfer in advanced heart failure, supporting larger confirmatory trials. The experimental and clinical data suggest that, when administrated through perfusion, virus vector carrying SERCA2a can also transduce vascular endothelial and smooth muscle cells (EC and SMC) thereby improving the clinical benefit of gene therapy. Indeed, recent advances in understanding the molecular basis of vascular dysfunction point towards a reduction of sarcoplasmic reticulum Ca2+ uptake and an impairment of Ca2+ cycling in vascular EC and SMC from patients and preclinical models with cardiac diseases or with cardiovascular risk factors such as diabetes, hypercholesterolemia, coronary artery diseases, as well as other conditions such as pulmonary hypertension. In recent years, several studies have established that SERCA2a gene-based therapy could be an efficient option to treat vascular dysfunction. This review focuses on the recent finding showing the beneficial effects of SERCA2a gene transfer in vascular EC and SMC.
Collapse
Affiliation(s)
- Larissa Lipskaia
- Mount Sinai School of Medicine, Department of Cardiology, New York, NY 10029-6574, USA
| | | | | | | | | |
Collapse
|
6
|
Dally S, Corvazier E, Bredoux R, Bobe R, Enouf J. Multiple and diverse coexpression, location, and regulation of additional SERCA2 and SERCA3 isoforms in nonfailing and failing human heart. J Mol Cell Cardiol 2010; 48:633-44. [DOI: 10.1016/j.yjmcc.2009.11.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2009] [Revised: 11/02/2009] [Accepted: 11/22/2009] [Indexed: 11/27/2022]
|
7
|
Korosec B, Glavac D, Volavsek M, Ravnik-Glavac M. ATP2A3 gene is involved in cancer susceptibility. ACTA ACUST UNITED AC 2009; 188:88-94. [PMID: 19100511 DOI: 10.1016/j.cancergencyto.2008.10.007] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2008] [Accepted: 10/09/2008] [Indexed: 11/30/2022]
Abstract
The sarco/endoplasmatic reticulum calcium-ATPase (SERCA) translocates Ca(2+) from cytosol to the lumen of the ER and thus regulates Ca(2+) homeostasis, perturbations of which have been suggested to contribute to cancer. We have previously detected an increased number of alterations in the ATP2A2 gene in various cancer types and in the ATP2A3 gene in head and neck squamous cell carcinoma. Here, we further analyzed the ATP2A3 gene in colon, lung, and CNS cancers. We identified a statistically significant increase of alterations in each (colon cancer, p=0.0052, lung cancer, p=0.0026, CNS tumors, p=0.0045) cancer type, and all 3 types together (p=0.0016). Epigenetic study of the ATP2A3 gene indicated an unchanged methylation status, whereas expression of the ATP2A3 gene was normal for exon 14 mutations and reduced in connection with a nucleotide change in intron VI in all studied cancer types. Identification of a significant number of alterations in cancer patients suggests that ATP2A3 is involved in increased cancer susceptibility in humans. The mostly normal expression and methylation status of the ATP2A3 gene, as well as the absence of somatic alterations, further suggest that the ATP2A3 gene may not act as a classical tumor suppressor gene, but rather haplo-insufficiency of this gene may be enough to change the cell and tissue environment in such a way to predispose to cancer development.
Collapse
Affiliation(s)
- Branka Korosec
- Department of Molecular Genetics, Institute of Pathology, Faculty of Medicine, University of Ljubljana, Korytkova 2, 1000 Ljubljana, Slovenia
| | | | | | | |
Collapse
|
8
|
Redondo PC, Jardin I, Lopez JJ, Salido GM, Rosado JA. Intracellular Ca2+ store depletion induces the formation of macromolecular complexes involving hTRPC1, hTRPC6, the type II IP3 receptor and SERCA3 in human platelets. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2007; 1783:1163-76. [PMID: 18191041 DOI: 10.1016/j.bbamcr.2007.12.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2007] [Revised: 12/11/2007] [Accepted: 12/11/2007] [Indexed: 11/26/2022]
Abstract
Endogenously expressed human canonical transient receptor potential 1 (hTRPC1) and human canonical transient receptor potential 6 (hTRPC6) have been shown to play a role in store-operated Ca2+ entry (SOCE) in human platelets, where two mechanisms for SOCE, regulated by the dense tubular system (DTS) or the acidic granules, have been identified. In cells preincubated for 1 min with 100 microM flufenamic acid we show that hTRPC6 is involved in SOCE activated by both mechanisms, as demonstrated by selective depletion of the DTS or the acidic stores, using thapsigargin (TG) (10 nM) or 2,5-di-(tert-butyl)-1,4-hydroquinone (TBHQ) (20 microM), respectively, although it is more relevant after acidic store depletion. Co-immunoprecipitation experiments indicated that depletion of both stores separately results in time-dependent interaction between hTRPC1 and hTRPC6, and also between both hTRPCs and the type II IP3 receptor (IP3RII). The latter was greater after treatment with TG. TBHQ-induced coupling between hTRPC1 and 6 was transient and decreased after 30s of treatment, while that induced by TG increased for at least 3 min. TBHQ induced association between SERCA3, located in the acidic stores, hTRPC1, hTRPC6 and Orai1. TBHQ also evoked coupling between SERCA3 and IP3RII, presumably located in the DTS, thus suggesting interplay between both Ca2+ stores. Similarly, TG induces the interaction of SERCA2b with hTRPC1 and 6 and the IP3RII. The interactions between hTRPC1, hTRPC6, IP3RII and SERCA3 were impaired by disruption of the microtubules, supporting a role for microtubules in Ca2+ homeostasis. In conclusion, the present data demonstrate for the first time that hTRPC1, hTRPC6, IP3RII and SERCA3 are parts of a macromolecular protein complex activated by depletion of the intracellular Ca2+ stores in human platelets.
Collapse
Affiliation(s)
- Pedro C Redondo
- Department of Physiology, Development and Neuroscience, University of Cambridge, CB2 3EG Cambridge, UK.
| | | | | | | | | |
Collapse
|
9
|
Chaabane C, Dally S, Corvazier E, Bredoux R, Bobe R, Ftouhi B, Raies A, Enouf J. Platelet PMCA- and SERCA-type Ca2+ -ATPase expression in diabetes: a novel signature of abnormal megakaryocytopoiesis. J Thromb Haemost 2007; 5:2127-35. [PMID: 17883705 DOI: 10.1111/j.1538-7836.2007.02709.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Previous studies have shown platelet Ca(2+) abnormalities in diabetes mellitus and some reports suggest abnormal platelet production. Platelet Ca(2+) homeostasis is controlled by a multi-Ca(2+)-ATPase system that includes two plasma membrane Ca(2+)-ATPase (PMCA) and seven sarco/endoplasmic reticulum Ca(2+)-ATPase (SERCA) isoforms. In addition, we recently found that the expression of PMCA4b and SERCA3 isoforms may serve as new markers of abnormal megakaryocytopoiesis [Nurden P et al. Impaired megakaryocytopoiesis in type 2B von Willebrand disease with severe thrombocytopenia. Blood 2006; 108: 2587-95]. AIM To analyze the expression of major platelet Ca(2+)-ATPases in 27 patients with type 1 or type 2 diabetes (T1D or T2D) compared with normal donors. METHODS Investigation of protein and mRNA expressions of PMCA1b and PMCA4b, and SERCA2b, SERCA3a and SERCA3b, using specific Western blotting and reverse transcriptase-polymerase chain reaction, respectively. RESULTS Remarkably, all patients with T1D were found to present a higher expression of PMCA4b protein (212% +/- 28%; n = 10) and PMCA4b mRNA (155% +/- 16%; n = 17), coupled with a higher expression of SERCA3b mRNA (165% +/- 9%) in some cases. Patients with T2D (n = 10) were also studied for protein expression and were found to present similar major upregulation of the expression of PMCA4b protein (180% +/- 28%; n = 10). Lastly, five of 10 patients with T1D were studied for PMCA4b expression after insulin treatment, with four of five recovering normal expression (96% +/- 15%; n = 5). CONCLUSIONS Compared with the expression of PMCA4b upon platelet maturation, platelets from diabetic patients exhibit similarities with immature megakaryocytes. Thus, this study reinforces the idea that abnormal megakaryocytopoiesis can provide additional insights into diabetes and could represent a novel therapeutic target for antithrombotic drugs.
Collapse
Affiliation(s)
- C Chaabane
- U689 INSERM, CRCIL, Hôpital Lariboisière, Paris Cedex 10, France
| | | | | | | | | | | | | | | |
Collapse
|
10
|
Ribiczey P, Tordai A, Andrikovics H, Filoteo AG, Penniston JT, Enouf J, Enyedi Á, Papp B, Kovács T. Isoform-specific up-regulation of plasma membrane Ca2+ATPase expression during colon and gastric cancer cell differentiation. Cell Calcium 2007; 42:590-605. [PMID: 17433436 PMCID: PMC2096732 DOI: 10.1016/j.ceca.2007.02.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2006] [Revised: 02/09/2007] [Indexed: 02/06/2023]
Abstract
In this work we demonstrate a differentiation-induced up-regulation of the expression of plasma membrane Ca2+ATPase (PMCA) isoforms being present in various gastric/colon cancer cell types. We found PMCA1b as the major isoform in non-differentiated cancer cell lines, whereas the expression level of PMCA4b was significantly lower. Cell differentiation initiated with short chain fatty acids (SCFAs) and trichostatin A, or spontaneous differentiation of post-confluent cell cultures resulted in a marked induction of PMCA4b expression, while only moderately increased PMCA1b levels. Up-regulation of PMCA4b expression was demonstrated both at the protein and mRNA levels, and closely correlated with the induction of established differentiation markers. In contrast, the expression level of the Na+/K+-ATPase or that of the sarco/endoplasmic reticulum Ca2+ATPase 2 protein did not change significantly under these conditions. In membrane vesicles obtained from SCFA-treated gastric/colon cancer cells a marked increase in the PMCA-dependent Ca2+ transport activity was observed, indicating a general increase of PMCA function during the differentiation of these cancer cells. Because various PMCA isoforms display distinct functional characteristics, we suggest that up-regulated PMCA expression, together with a major switch in PMCA isoform pattern may significantly contribute to the differentiation of gastric/colon cancer cells. The analysis of PMCA expression may provide a new diagnostic tool for monitoring the tumor phenotype.
Collapse
Affiliation(s)
- Polett Ribiczey
- National Medical Centre, Institute of Haematology and Immunology, Budapest, Hungary
| | - Attila Tordai
- National Medical Centre, Institute of Haematology and Immunology, Budapest, Hungary
| | - Hajnalka Andrikovics
- National Medical Centre, Institute of Haematology and Immunology, Budapest, Hungary
| | - Adelaida G. Filoteo
- Department of Biochemistry and Molecular Biology, Mayo Foundation, Rochester, MN 55905, United States
| | | | - Jocelyne Enouf
- Institut National de la Santé et de la Recherche Médicale (INSERM) U689 E4, Paris, France
- Université Paris 7-Denis Diderot, IFR139, Site Lariboisière, Paris, France
| | - Ágnes Enyedi
- National Medical Centre, Institute of Haematology and Immunology, Budapest, Hungary
| | - Béla Papp
- INSERM, U718, Laboratoire de Biologie Cellulaire Hématopoïétique, Paris, France
- Université Paris 7-Denis Diderot, Faculté de médecine, IFR105-Saint Louis-Institut Universitaire d’Hématologie, Paris, France
| | - Tünde Kovács
- National Medical Centre, Institute of Haematology and Immunology, Budapest, Hungary
- *Corresponding author at: National Medical Centre, Institute of Haematology and Immunology, Diószegi u. 64, H-1113 Budapest, Hungary, Tel/Fax: 36-1-372-4353 E-mail address:
| |
Collapse
|
11
|
Akimoto T, Kusumi I, Suzuki K, Koyama T. Effects of calmodulin and protein kinase C modulators on transient Ca2+ increase and capacitative Ca2+ entry in human platelets: relevant to pathophysiology of bipolar disorder. Prog Neuropsychopharmacol Biol Psychiatry 2007; 31:136-41. [PMID: 16996188 DOI: 10.1016/j.pnpbp.2006.08.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2006] [Revised: 07/14/2006] [Accepted: 08/14/2006] [Indexed: 10/24/2022]
Abstract
Disturbed intracellular calcium (Ca(2+)) homeostasis has been implicated in bipolar disorder, which mechanisms may be involved in the dysregulation of protein kinase C (PKC) and calmodulin systems. In this study, we investigated a transient intracellular Ca(2+) increase induced by thapsigargin, an inhibitor of sarco/endoplasmic reticulum Ca(2+)-ATPase pump (SERCA), and a capacitative Ca(2+) entry followed by addition of extracellular Ca(2+), in the presence or absence of PKC/calmodulin modulators in the platelets of healthy subjects in order to elucidate the role of SERCA in Ca(2+) homeostasis and to assess how both PKC and calmodulin systems regulate the two Ca(2+) responses. Moreover, we also examined the thapsigargin-elicited transient Ca(2+) increase and capacitative Ca(2+) entry in patients with mood disorders. PKC and calmodulin systems have opposite regulatory effects on the transient Ca(2+) increase and capacitative Ca(2+) entry in the platelets of normal subjects. The inhibitory effect of PKC activation on capacitative Ca(2+) entry is significantly increased and the stimulatory effect of PKC inhibition is significantly decreased in bipolar disorder compared to major depressive disorder and normal controls. These results suggest the possibility that increased PKC activity may activate the inhibitory effect of capacitative Ca(2+) entry in bipolar disorder. However, this is a preliminary study using a small sample, thus further studies are needed to examine the PKC and calmodulin modulators on the capacitative Ca(2+) entry in a larger sample.
Collapse
Affiliation(s)
- Tatsuyuki Akimoto
- Department of Psychiatry, Hokkaido University Graduate School of Medicine, North 15-West 7, Kita-ku, Sapporo 060-8638, Japan
| | | | | | | |
Collapse
|
12
|
Brouland JP, Valleur P, Papp B. Expression des pompes calciques de type SERCA au cours de la différenciation cellulaire et de la tumorigenèse: application à la carcinogenèse colique. Ann Pathol 2006; 26:159-72. [PMID: 17127848 DOI: 10.1016/s0242-6498(06)70701-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Calcium homeostasis of the endoplasmic reticulum (ER) is involved in intracellular signaling pathways and is implicated in major cell functions such as cell growth, differentiation, protein synthesis and apoptosis. The accumulation of calcium in the ER is performed by specific sarco/endoplasmic reticulum calcium transport ATPases (SERCA iso-enzymes). The expression of biochemically distinct SERCA isoforms is cell type dependent and developmentally regulated. This review summarizes pertinent data about the modulation of the expression of SERCA enzymes during the differentiation of normal and tumor cells. These data support the implication of SERCA pumps and especially SERCA3 in the differentiation program of cancer and leukemia cells. During the multi-step process of colon carcinogenesis, the decrease of SERCA3 expression seems to be linked to enhanced APC/ss-catenin/TCF4 signaling and deficient Sp1-like factor-dependent transcription.
Collapse
Affiliation(s)
- Jean-Philippe Brouland
- Service d'Anatomie et de Cytologie Pathologiques, Hôpital Lariboisière, 75475 Paris Cedex 10, France.
| | | | | |
Collapse
|
13
|
Dally S, Bredoux R, Corvazier E, Andersen J, Clausen J, Dode L, Fanchaouy M, Gelebart P, Monceau V, Del Monte F, Gwathmey J, Hajjar R, Chaabane C, Bobe R, Raies A, Enouf J. Ca2+-ATPases in non-failing and failing heart: evidence for a novel cardiac sarco/endoplasmic reticulum Ca2+-ATPase 2 isoform (SERCA2c). Biochem J 2006; 395:249-58. [PMID: 16402920 PMCID: PMC1422767 DOI: 10.1042/bj20051427] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2005] [Revised: 12/08/2005] [Accepted: 01/11/2006] [Indexed: 01/24/2023]
Abstract
We recently documented the expression of a novel human mRNA variant encoding a yet uncharacterized SERCA [SR (sarcoplasmic reticulum)/ER (endoplasmic reticulum) Ca2+-ATPase] protein, SERCA2c [Gélébart, Martin, Enouf and Papp (2003) Biochem. Biophys. Res. Commun. 303, 676-684]. In the present study, we have analysed the expression and functional characteristics of SERCA2c relative to SERCA2a and SERCA2b isoforms upon their stable heterologous expression in HEK-293 cells (human embryonic kidney 293 cells). All SERCA2 proteins induced an increased Ca2+ content in the ER of intact transfected cells. In microsomes prepared from transfected cells, SERCA2c showed a lower apparent affinity for cytosolic Ca2+ than SERCA2a and a catalytic turnover rate similar to SERCA2b. We further demonstrated the expression of the endogenous SERCA2c protein in protein lysates isolated from heart left ventricles using a newly generated SERCA2c-specific antibody. Relative to the known uniform distribution of SERCA2a and SERCA2b in cardiomyocytes of the left ventricle tissue, SERCA2c was only detected in a confined area of cardiomyocytes, in close proximity to the sarcolemma. This finding led us to explore the expression of the presently known cardiac Ca2+-ATPase isoforms in heart failure. Comparative expression of SERCAs and PMCAs (plasma-membrane Ca2+-ATPases) was performed in four nonfailing hearts and five failing hearts displaying mixed cardiomyopathy and idiopathic dilated cardiomyopathies. Relative to normal subjects, cardiomyopathic patients express more PMCAs than SERCA2 proteins. Interestingly, SERCA2c expression was significantly increased (166+/-26%) in one patient. Taken together, these results demonstrate the expression of the novel SERCA2c isoform in the heart and may point to a still unrecognized role of PMCAs in cardiomyopathies.
Collapse
Key Words
- endoplasmic reticulum
- heart failure
- human embryonic kidney 293 cell (hek-293 cell)
- isoform
- plasma membrane ca2+-atpase (pmca)
- sarco/endoplasmic reticulum ca2+-atpase (serca)
- er, endoplasmic reticulum
- [ca2+]c, cytosolic ca2+ concentration
- [ca2+]er, er ca2+ content
- fura 2/am, fura 2 acetoxymethyl ester
- gapdh, glyceraldehyde-3-phosphate dehydrogenase
- hek-293 cell, human embryonic kidney 293 cell
- nnos, neuronal nitric oxide synthase
- pmca, plasma-membrane ca2+-atpase
- rt, reverse transcriptase
- sr, sarcoplasmic reticulum
- serca, sr/er ca2+-atpase
- spca, secretory-pathway ca2+-atpase
Collapse
Affiliation(s)
- Saoussen Dally
- *INSERM U689, IFR139, Hôpital Lariboisière, 8 Rue Guy Patin, 75475 Paris Cedex 10, France
| | - Raymonde Bredoux
- *INSERM U689, IFR139, Hôpital Lariboisière, 8 Rue Guy Patin, 75475 Paris Cedex 10, France
| | - Elisabeth Corvazier
- *INSERM U689, IFR139, Hôpital Lariboisière, 8 Rue Guy Patin, 75475 Paris Cedex 10, France
| | - Jens P. Andersen
- †Department of Physiology, Institute of Physiology and Biophysics, University of Aarhus, Aarhus, Denmark
| | - Johannes D. Clausen
- †Department of Physiology, Institute of Physiology and Biophysics, University of Aarhus, Aarhus, Denmark
| | - Leonard Dode
- ‡Laboratory of Physiology, Catholic University of Leuven, Leuven, Belgium
| | - Mohammed Fanchaouy
- *INSERM U689, IFR139, Hôpital Lariboisière, 8 Rue Guy Patin, 75475 Paris Cedex 10, France
| | - Pascal Gelebart
- *INSERM U689, IFR139, Hôpital Lariboisière, 8 Rue Guy Patin, 75475 Paris Cedex 10, France
| | - Virginie Monceau
- *INSERM U689, IFR139, Hôpital Lariboisière, 8 Rue Guy Patin, 75475 Paris Cedex 10, France
| | - Frederica Del Monte
- §Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, U.S.A
| | - Judith K. Gwathmey
- §Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, U.S.A
| | - Roger Hajjar
- §Cardiovascular Research Center, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, U.S.A
| | - Chiraz Chaabane
- *INSERM U689, IFR139, Hôpital Lariboisière, 8 Rue Guy Patin, 75475 Paris Cedex 10, France
| | - Régis Bobe
- *INSERM U689, IFR139, Hôpital Lariboisière, 8 Rue Guy Patin, 75475 Paris Cedex 10, France
| | - Aly Raies
- ∥Laboratoire des Microorganismes et Biomolécules Actives, Faculté des Sciences de Tunis, Tunisia
| | - Jocelyne Enouf
- *INSERM U689, IFR139, Hôpital Lariboisière, 8 Rue Guy Patin, 75475 Paris Cedex 10, France
| |
Collapse
|
14
|
Chang JP, Wong CJH, Davis PJ, Soetaert B, Fedorow C, Sawisky G. Role of Ca2+ stores in dopamine- and PACAP-evoked growth hormone release in goldfish. Mol Cell Endocrinol 2003; 206:63-74. [PMID: 12943990 DOI: 10.1016/s0303-7207(03)00234-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Growth hormone (GH) secretion, evoked by either pituitary adenylate cyclase-activating polypeptide (PACAP) or dopamine (DA), is dependent on both voltage-sensitive calcium channels (VSCC) and cAMP signaling in goldfish. We further characterized the involvement of Ca2+ in evoked release by PACAP and DA, by examining the sensitivity of evoked GH release to perturbations of Ca2+ signaling. Both VSCC and calmodulin/calmodulin-dependent kinase are involved in PACAP signaling as had been shown for DA. In spite of this apparent dependence on VSCC, blockade of TMB-8 but not ryanodine-sensitive intracellular Ca2+ stores inhibited both PACAP- and DA-evoked GH release. Using sarcoplasmic/endoplasmic reticulum Ca-ATPases (SERCA) inhibitors, we found BHQ blocked, whereas thapsigargin (Tg) enhanced stimulated GH release, suggesting that Tg-sensitive SERCA may counteract these cAMP-mobilizing neuroendocrine regulators by sequestering [Ca2+]i. As GH secretion stimulated by two endogenous gonadotropin-releasing hormones is not affected by Tg, it appears that distinct multiple Ca2+ stores mediate the hormone releasing response to different neuroendocrine regulators.
Collapse
Affiliation(s)
- J P Chang
- Department of Biological Sciences, University of Alberta, CW 405, Biological Sciences Building, Edmonton, Alta, Canada T6G 2E9.
| | | | | | | | | | | |
Collapse
|