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Privitera M, von Ziegler LM, Floriou-Servou A, Duss SN, Zhang R, Waag R, Leimbacher S, Sturman O, Roessler FK, Heylen A, Vermeiren Y, Van Dam D, De Deyn PP, Germain PL, Bohacek J. Noradrenaline release from the locus coeruleus shapes stress-induced hippocampal gene expression. eLife 2024; 12:RP88559. [PMID: 38477670 DOI: 10.7554/elife.88559] [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: 03/14/2024] Open
Abstract
Exposure to an acute stressor triggers a complex cascade of neurochemical events in the brain. However, deciphering their individual impact on stress-induced molecular changes remains a major challenge. Here, we combine RNA sequencing with selective pharmacological, chemogenetic, and optogenetic manipulations to isolate the contribution of the locus coeruleus-noradrenaline (LC-NA) system to the acute stress response in mice. We reveal that NA release during stress exposure regulates a large and reproducible set of genes in the dorsal and ventral hippocampus via β-adrenergic receptors. For a smaller subset of these genes, we show that NA release triggered by LC stimulation is sufficient to mimic the stress-induced transcriptional response. We observe these effects in both sexes, and independent of the pattern and frequency of LC activation. Using a retrograde optogenetic approach, we demonstrate that hippocampus-projecting LC neurons directly regulate hippocampal gene expression. Overall, a highly selective set of astrocyte-enriched genes emerges as key targets of LC-NA activation, most prominently several subunits of protein phosphatase 1 (Ppp1r3c, Ppp1r3d, Ppp1r3g) and type II iodothyronine deiodinase (Dio2). These results highlight the importance of astrocytic energy metabolism and thyroid hormone signaling in LC-mediated hippocampal function and offer new molecular targets for understanding how NA impacts brain function in health and disease.
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Affiliation(s)
- Mattia Privitera
- Laboratory of Molecular and Behavioral Neuroscience, Institute for Neuroscience, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
- Neuroscience Center Zurich, ETH Zurich and University of Zurich, Switzerland, Zurich, Switzerland
| | - Lukas M von Ziegler
- Laboratory of Molecular and Behavioral Neuroscience, Institute for Neuroscience, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
- Neuroscience Center Zurich, ETH Zurich and University of Zurich, Switzerland, Zurich, Switzerland
| | - Amalia Floriou-Servou
- Laboratory of Molecular and Behavioral Neuroscience, Institute for Neuroscience, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
- Neuroscience Center Zurich, ETH Zurich and University of Zurich, Switzerland, Zurich, Switzerland
| | - Sian N Duss
- Laboratory of Molecular and Behavioral Neuroscience, Institute for Neuroscience, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
- Neuroscience Center Zurich, ETH Zurich and University of Zurich, Switzerland, Zurich, Switzerland
| | - Runzhong Zhang
- Laboratory of Molecular and Behavioral Neuroscience, Institute for Neuroscience, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Rebecca Waag
- Laboratory of Molecular and Behavioral Neuroscience, Institute for Neuroscience, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
- Neuroscience Center Zurich, ETH Zurich and University of Zurich, Switzerland, Zurich, Switzerland
| | - Sebastian Leimbacher
- Laboratory of Molecular and Behavioral Neuroscience, Institute for Neuroscience, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Oliver Sturman
- Laboratory of Molecular and Behavioral Neuroscience, Institute for Neuroscience, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
- Neuroscience Center Zurich, ETH Zurich and University of Zurich, Switzerland, Zurich, Switzerland
| | - Fabienne K Roessler
- Laboratory of Molecular and Behavioral Neuroscience, Institute for Neuroscience, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
| | - Annelies Heylen
- Laboratory of Neurochemistry and Behavior, Experimental Neurobiology Unit, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
| | - Yannick Vermeiren
- Laboratory of Neurochemistry and Behavior, Experimental Neurobiology Unit, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
- Division of Human Nutrition and Health, Chair Group of Nutritional Biology, Wageningen University & Research (WUR), Wageningen, Netherlands
| | - Debby Van Dam
- Laboratory of Neurochemistry and Behavior, Experimental Neurobiology Unit, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
- Department of Neurology and Alzheimer Center, University of Groningen and University Medical Center Groningen (UMCG), Groningen, Netherlands
| | - Peter P De Deyn
- Laboratory of Neurochemistry and Behavior, Experimental Neurobiology Unit, Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium
- Department of Neurology and Alzheimer Center, University of Groningen and University Medical Center Groningen (UMCG), Groningen, Netherlands
- Department of Neurology, Memory Clinic of Hospital Network Antwerp (ZNA) Middelheim and Hoge Beuken, Antwerp, Belgium
| | - Pierre-Luc Germain
- Laboratory of Molecular and Behavioral Neuroscience, Institute for Neuroscience, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
- Neuroscience Center Zurich, ETH Zurich and University of Zurich, Switzerland, Zurich, Switzerland
- Computational Neurogenomics, Institute for Neuroscience, Department of Health Sciences and Technology, ETH Zürich, Zurich, Switzerland
- Laboratory of Statistical Bioinformatics, University of Zürich, Zürich, Switzerland
| | - Johannes Bohacek
- Laboratory of Molecular and Behavioral Neuroscience, Institute for Neuroscience, Department of Health Sciences and Technology, ETH Zurich, Zurich, Switzerland
- Neuroscience Center Zurich, ETH Zurich and University of Zurich, Switzerland, Zurich, Switzerland
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2
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Gonsalez SR, Gomes DS, de Souza AM, Ferrão FM, Vallotton Z, Gogulamudi VR, Lowe J, Casarini DE, Prieto MC, Lara LS. The Triad Na + Activated Na + Channel (Nax)-Salt Inducible KINASE (SIK) and (Na + + K +)-ATPase: Targeting the Villains to Treat Salt Resistant and Sensitive Hypertension. Int J Mol Sci 2023; 24:ijms24097887. [PMID: 37175599 PMCID: PMC10178781 DOI: 10.3390/ijms24097887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/04/2023] [Accepted: 04/19/2023] [Indexed: 05/15/2023] Open
Abstract
The Na+-activated Na+ channel (Nax) and salt-inducible kinase (SIK) are stimulated by increases in local Na+ concentration, affecting (Na+ + K+)-ATPase activity. To test the hypothesis that the triad Nax/SIK/(Na+ + K+)-ATPase contributes to kidney injury and salt-sensitive hypertension (HTN), uninephrectomized male Wistar rats (200 g; n = 20) were randomly divided into 4 groups based on a salt diet (normal salt diet; NSD-0.5% NaCl-or high-salt diet; HSD-4% NaCl) and subcutaneous administration of saline (0.9% NaCl) or deoxycorticosterone acetate (DOCA, 8 mg/kg), as follows: Control (CTRL), CTRL-Salt, DOCA, and DOCA-Salt, respectively. After 28 days, the following were measured: kidney function, blood pressure, (Na+ + K+)-ATPase and SIK1 kidney activities, and Nax and SIK1 renal expression levels. SIK isoforms in kidneys of CTRL rats were present in the glomerulus and tubular epithelia; they were not altered by HSD and/or HTN. CTRL-Salt rats remained normotensive but presented slight kidney function decay. HSD rats displayed augmentation of the Nax/SIK/(Na+ + K+)-ATPase pathway. HTN, kidney injury, and kidney function decay were present in all DOCA rats; these were aggravated by HSD. DOCA rats presented unaltered (Na+ + K+)-ATPase activity, diminished total SIK activity, and augmented SIK1 and Nax content in the kidney cortex. DOCA-Salt rats expressed SIK1 activity and downregulation in (Na+ + K+)-ATPase activity in the kidney cortex despite augmented Nax content. The data of this study indicate that the (Na+ + K+)-ATPase activity response to SIK is attenuated in rats under HSD, independent of HTN, as a mechanism contributing to kidney injury and salt-sensitive HTN.
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Affiliation(s)
- Sabrina R Gonsalez
- Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Campus Macaé, Rio de Janeiro 21941-901, Brazil
| | - Dayene S Gomes
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-971, Brazil
| | - Alessandro M de Souza
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-971, Brazil
| | - Fernanda M Ferrão
- Núcleo Multidisciplinar de Pesquisa em Biologia (NUMPEX-BIO), Universidade Federal do Rio de Janeiro, Campus Caxias, Rio de Janeiro 21941-901, Brazil
| | - Zoe Vallotton
- Department of Physiology, School of Medicine and Tulane Renal and Hypertension Center of Excellence, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Venkateswara R Gogulamudi
- Department of Physiology, School of Medicine and Tulane Renal and Hypertension Center of Excellence, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Jennifer Lowe
- Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-901, Brazil
| | - Dulce E Casarini
- Departamento de Medicina, Disciplina de Nefrologia, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04023-062, Brazil
| | - Minolfa C Prieto
- Department of Physiology, School of Medicine and Tulane Renal and Hypertension Center of Excellence, Tulane University School of Medicine, New Orleans, LA 70112, USA
| | - Lucienne S Lara
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-971, Brazil
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3
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Peng J, Zhao J, Tang Q, Wang J, Song W, Lu X, Huang X, Chen G, Zheng W, Zhang L, Han Y, Yan C, Wan Q, Chen L. Low intensity near-infrared light promotes bone regeneration via circadian clock protein cryptochrome 1. Int J Oral Sci 2022; 14:53. [PMID: 36376275 PMCID: PMC9663728 DOI: 10.1038/s41368-022-00207-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 09/04/2022] [Accepted: 10/12/2022] [Indexed: 11/16/2022] Open
Abstract
Bone regeneration remains a great clinical challenge. Low intensity near-infrared (NIR) light showed strong potential to promote tissue regeneration, offering a promising strategy for bone defect regeneration. However, the effect and underlying mechanism of NIR on bone regeneration remain unclear. We demonstrated that bone regeneration in the rat skull defect model was significantly accelerated with low-intensity NIR stimulation. In vitro studies showed that NIR stimulation could promote the osteoblast differentiation in bone mesenchymal stem cells (BMSCs) and MC3T3-E1 cells, which was associated with increased ubiquitination of the core circadian clock protein Cryptochrome 1 (CRY1) in the nucleus. We found that the reduction of CRY1 induced by NIR light activated the bone morphogenetic protein (BMP) signaling pathways, promoting SMAD1/5/9 phosphorylation and increasing the expression levels of Runx2 and Osterix. NIR light treatment may act through sodium voltage-gated channel Scn4a, which may be a potential responder of NIR light to accelerate bone regeneration. Together, these findings suggest that low-intensity NIR light may promote in situ bone regeneration in a CRY1-dependent manner, providing a novel, efficient and non-invasive strategy to promote bone regeneration for clinical bone defects.
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4
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Salt-inducible kinases: new players in pulmonary arterial hypertension? Trends Pharmacol Sci 2022; 43:806-819. [PMID: 35851157 DOI: 10.1016/j.tips.2022.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 06/16/2022] [Accepted: 06/17/2022] [Indexed: 12/13/2022]
Abstract
Salt-inducible kinases (SIKs) are serine/threonine kinases belonging to the AMP-activated protein kinase (AMPK) family. Accumulating evidence indicates that SIKs phosphorylate multiple targets, including histone deacetylases (HDACs) and cAMP response element-binding protein (CREB)-regulated transcriptional coactivators (CRTCs), to coordinate signaling pathways implicated in metabolism, cell growth, proliferation, apoptosis, and inflammation. These pathways downstream of SIKs are altered not only in pathologies like cancer, systemic hypertension, and inflammatory diseases, but also in pulmonary arterial hypertension (PAH), a multifactorial disease characterized by pulmonary vasoconstriction, inflammation and remodeling of pulmonary arteries owing to endothelial dysfunction and aberrant proliferation of smooth muscle cells (SMCs). In this opinion article, we present evidence of SIKs as modulators of key signaling pathways involved in PAH pathophysiology and discuss the potential of SIKs as therapeutic targets for PAH, emphasizing the need for deeper molecular insights on PAH.
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5
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António T, Cosme D, Igreja B, Fraga S, Serrão MP, Pires NM, Soares-da-Silva P. The role of salt-inducible kinases on the modulation of renal and intestinal Na +,K +-ATPase activity during short- and long-term high-salt intake. Eur J Pharmacol 2021; 904:174153. [PMID: 33989615 DOI: 10.1016/j.ejphar.2021.174153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 04/24/2021] [Accepted: 04/30/2021] [Indexed: 11/29/2022]
Abstract
Type 1 salt-inducible kinases (SIK1) has been shown to act as a mediator during the cellular adaptation to variations in intracellular sodium in a variety of cell types. Type 2 SIK (SIK2) modulates various biological functions and acts as a signal transmitter in various pathways. To evaluate the role of both SIK isoforms in renal and intestinal Na+,K+-ATPase (NKA) activity, we made use of constitutive sik1-/- (SIK1-KO), sik2-/- (SIK2-KO), double sik1-/-sik2-/- (double SIK1*2-KO) knockout and wild-type (WT) mice challenged to a standard (0.3% NaCl) or chronic high-salt (HS, 8% NaCl) diet intake for 48 h or 12 weeks. Long-term HS intake in WT was accompanied by 2-fold increase in jejunal NKA activity and slight (~30% reduction) decreases in NKA in the ileum and cecum; none of these changes was accompanied by changes in the expression of α1-NKA. The ablation of SIK1 and SIK2 prevented the marked increase in jejunal NKA activity following the long-term HS intake. The ablation of SIK1 and SIK2 in mice on a long-term HS intake impacted differently in the ileum and cecum. The most interesting finding is that in SIK2-KO mice marked reductions in NKA activity were observed in the ileum and cecum when compared to WT mice, both on normal and long-term HS intake. In summary, SIK1 or SIK2 ablation on chronic high-salt intake is accompanied by modulation of NKA along the intestinal tract, which differ from those after an acute high-salt intake, and this may represent an absorptive compensatory mechanism to keep electrolyte homeostasis.
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Affiliation(s)
- Tatiana António
- Unit of Pharmacology and Therapeutics, Department of Biomedicine, Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal; MedInUp - Center for Drug Discovery and Innovative Medicines, University of Porto, 4200-319, Porto, Portugal
| | - Dina Cosme
- Unit of Pharmacology and Therapeutics, Department of Biomedicine, Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal; MedInUp - Center for Drug Discovery and Innovative Medicines, University of Porto, 4200-319, Porto, Portugal
| | - Bruno Igreja
- Division of Research and Development, BIAL-Portela & C(a), S.A, 4745-457, Coronado, Portugal
| | - Sónia Fraga
- Unit of Pharmacology and Therapeutics, Department of Biomedicine, Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal; MedInUp - Center for Drug Discovery and Innovative Medicines, University of Porto, 4200-319, Porto, Portugal
| | - Maria Paula Serrão
- Unit of Pharmacology and Therapeutics, Department of Biomedicine, Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal; MedInUp - Center for Drug Discovery and Innovative Medicines, University of Porto, 4200-319, Porto, Portugal
| | - Nuno M Pires
- Division of Research and Development, BIAL-Portela & C(a), S.A, 4745-457, Coronado, Portugal
| | - Patrício Soares-da-Silva
- Unit of Pharmacology and Therapeutics, Department of Biomedicine, Faculty of Medicine, University of Porto, 4200-319, Porto, Portugal; MedInUp - Center for Drug Discovery and Innovative Medicines, University of Porto, 4200-319, Porto, Portugal; Division of Research and Development, BIAL-Portela & C(a), S.A, 4745-457, Coronado, Portugal.
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6
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Zhang C, van Leeuwen W, Blotenburg M, Aguilera-Gomez A, Brussee S, Grond R, Kampinga HH, Rabouille C. Activation of salt Inducible Kinases, IRE1 and PERK leads to Sec bodies formation in Drosophila S2 cells. J Cell Sci 2021; 134:272062. [PMID: 34350957 PMCID: PMC8445602 DOI: 10.1242/jcs.258685] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 07/21/2021] [Indexed: 11/20/2022] Open
Abstract
The phase separation of the non-membrane bound Sec bodies occurs in Drosophila S2 cells by coalescence of components of the endoplasmic reticulum (ER) exit sites under the stress of amino acid starvation. Here, we address which signaling pathways cause Sec body formation and find that two pathways are critical. The first is the activation of the salt-inducible kinases (SIKs; SIK2 and SIK3) by Na+ stress, which, when it is strong, is sufficient. The second is activation of IRE1 and PERK (also known as PEK in flies) downstream of ER stress induced by the absence of amino acids, which needs to be combined with moderate salt stress to induce Sec body formation. SIK, and IRE1 and PERK activation appear to potentiate each other through the stimulation of the unfolded protein response, a key parameter in Sec body formation. This work shows the role of SIKs in phase transition and re-enforces the role of IRE1 and PERK as a metabolic sensor for the level of circulating amino acids and salt. This article has an associated First Person interview with the first author of the paper. Summary: In S2 cells, the phase-separated Sec bodies form upon the combined activation of salt-inducible kinases, IRE1 and PERK.
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Affiliation(s)
- Chujun Zhang
- Hubrecht Institute of the KNAW & UMC Utrecht, Utrecht, The Netherlands
| | | | | | | | - Sem Brussee
- Hubrecht Institute of the KNAW & UMC Utrecht, Utrecht, The Netherlands
| | - Rianne Grond
- Hubrecht Institute of the KNAW & UMC Utrecht, Utrecht, The Netherlands
| | - Harm H Kampinga
- Department of Biomedical Sciences in Cells and Systems, UMC Groningen, The Netherlands
| | - Catherine Rabouille
- Hubrecht Institute of the KNAW & UMC Utrecht, Utrecht, The Netherlands.,Department of Biomedical Sciences in Cells and Systems, UMC Groningen, The Netherlands.,Section Cell Biology, Center for Molecular Medicine, University Medical Center Utrecht, The Netherlands
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7
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Pires NM, Igreja B, Soares-da-Silva P. Antagonistic modulation of SIK1 and SIK2 isoforms in high blood pressure and cardiac hypertrophy triggered by high-salt intake. Clin Exp Hypertens 2021; 43:428-435. [PMID: 33688765 DOI: 10.1080/10641963.2021.1896728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/18/2021] [Accepted: 02/18/2021] [Indexed: 10/21/2022]
Abstract
Salt-inducible kinases (SIKs) represent a subfamily of AMPK family kinases. SIK1 has been shown to act as a mediator during the cellular adaptation to variations in intracellular sodium in a variety of cell types. SIK2, as an isoform of the SIK family, modulates various biological functions and acts as a signal transmitter in various pathways. To evaluate the role of both SIK1 and SIK2 isoforms in blood pressure (BP), body fluid regulation and cardiac hypertrophy development, we made use of constitutive sik1-/- (SIK1-KO), sik2-/- (SIK2-KO), double sik1-/-sik2-/- (double SIK1*2-KO) knockout and wild-type (WT) mice challenged to a standard (0.3% NaCl) or chronic high-salt (HS, 8% NaCl) diet intake for 12 weeks.Mice, under a standard diet intake, had similar and normal BP. On a chronic HS intake, SIK1-KO and double SIK1*2-KO mice showed increased BP, but not WT and SIK2-KO mice. A chronic HS intake led to the development of cardiac left ventricle hypertrophy (LVH) in normotensive WT and hypertensive SIK1-KO mice, but not in SIK2-KO mice. Double SIK1*2-KO mice under standard diet intake show normal BP but an increased LV mass. Remarkably, in response to a dietary stress condition, there is an increase in BP but LVH remained unchanged in double SIK1*2-KO mice.In summary, SIK1 isoform is required for maintaining normal BP in response to HS intake. LVH triggered by HS intake requires SIK2 isoform and is independent of high BP.
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Affiliation(s)
- Nuno M Pires
- Division of Research and Development, BIAL-Portela & Cª, S.A, Coronado (S. Mamede & S. Romão), Portugal
| | - Bruno Igreja
- Division of Research and Development, BIAL-Portela & Cª, S.A, Coronado (S. Mamede & S. Romão), Portugal
| | - Patrício Soares-da-Silva
- Division of Research and Development, BIAL-Portela & Cª, S.A, Coronado (S. Mamede & S. Romão), Portugal
- Unit of Pharmacology and Therapeutics, Department of Biomedicine, Faculty of Medicine, University of Porto, Porto, Portugal
- MedInUp - Center for Drug Discovery and Innovative Medicines, University of Porto, Porto, Portugal
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8
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Lopez-Charcas O, Pukkanasut P, Velu SE, Brackenbury WJ, Hales TG, Besson P, Gomora JC, Roger S. Pharmacological and nutritional targeting of voltage-gated sodium channels in the treatment of cancers. iScience 2021; 24:102270. [PMID: 33817575 PMCID: PMC8010468 DOI: 10.1016/j.isci.2021.102270] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Voltage-gated sodium (NaV) channels, initially characterized in excitable cells, have been shown to be aberrantly expressed in non-excitable cancer tissues and cells from epithelial origins such as in breast, lung, prostate, colon, and cervix, whereas they are not expressed in cognate non-cancer tissues. Their activity was demonstrated to promote aggressive and invasive potencies of cancer cells, both in vitro and in vivo, whereas their deregulated expression in cancer tissues has been associated with metastatic progression and cancer-related death. This review proposes NaV channels as pharmacological targets for anticancer treatments providing opportunities for repurposing existing NaV-inhibitors or developing new pharmacological and nutritional interventions.
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Affiliation(s)
- Osbaldo Lopez-Charcas
- Université de Tours, EA4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine de Tours, 10 Boulevard Tonnellé, 37032 Tours, France
| | - Piyasuda Pukkanasut
- Department of Chemistry, The University of Alabama at Birmingham, CHEM 280. 901, 14th Street S, Birmingham, AL 35294, USA
| | - Sadanandan E. Velu
- Department of Chemistry, The University of Alabama at Birmingham, CHEM 280. 901, 14th Street S, Birmingham, AL 35294, USA
| | - William J. Brackenbury
- Department of Biology, York Biomedical Research Institute, University of York, Heslington, York YO10 5DD, UK
| | - Tim G. Hales
- Institute of Academic Anaesthesia, Division of Systems Medicine, School of Medicine, the University of Dundee, DD1 9SY, Dundee, UK
| | - Pierre Besson
- Université de Tours, EA4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine de Tours, 10 Boulevard Tonnellé, 37032 Tours, France
| | - Juan Carlos Gomora
- Instituto de Fisiología Celular, Circuito Exterior s/n Ciudad Universitaria, Universidad Nacional Autónoma de México, Mexico City, 04510 México
| | - Sébastien Roger
- Université de Tours, EA4245 Transplantation, Immunologie, Inflammation, Faculté de Médecine de Tours, 10 Boulevard Tonnellé, 37032 Tours, France
- Institut Universitaire de France, 75005 Paris, France
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9
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Wu Y, Yang Y, Gu H, Tao B, Zhang E, Wei J, Wang Z, Liu A, Sun R, Chen M, Fan Y, Mao R. Multi-omics analysis reveals the functional transcription and potential translation of enhancers. Int J Cancer 2020; 147:2210-2224. [PMID: 32573785 DOI: 10.1002/ijc.33132] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 04/22/2020] [Accepted: 05/19/2020] [Indexed: 12/23/2022]
Abstract
Enhancer can transcribe RNAs, however, most of them were neglected in traditional RNA-seq analysis workflow. Here, we developed a Pipeline for Enhancer Transcription (PET, http://fun-science.club/PET) for quantifying enhancer RNAs (eRNAs) from RNA-seq. By applying this pipeline on lung cancer samples and cell lines, we showed that the transcribed enhancers are enriched with histone marks and transcription factor motifs (JUNB, Hand1-Tcf3 and GATA4). By training a machine learning model, we demonstrate that enhancers can predict prognosis better than their nearby genes. Integrating the Hi-C, ChIP-seq and RNA-seq data, we observe that transcribed enhancers associate with cancer hallmarks or oncogenes, among which LcsMYC-1 (Lung cancer-specific MYC eRNA-1) potentially supports MYC expression. Surprisingly, a significant proportion of transcribed enhancers contain small protein-coding open reading frames (sORFs) and can be translated into microproteins. Our study provides a computational method for eRNA quantification and deepens our understandings of the DNA, RNA and protein nature of enhancers.
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Affiliation(s)
- Yingcheng Wu
- Laboratory of Medical Science, School of Medicine, Nantong University, Nantong, Jiangsu, China.,Department of Pathophysiology, School of Medicine, Nantong University, Nantong, Jiangsu, China
| | - Yang Yang
- Department of Thoracic Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Hongyan Gu
- Department of Respiratory Medicine, Nantong Sixth People's Hospital, Nantong, Jiangsu, China
| | - Baorui Tao
- Laboratory of Medical Science, School of Medicine, Nantong University, Nantong, Jiangsu, China
| | - Erhao Zhang
- Laboratory of Medical Science, School of Medicine, Nantong University, Nantong, Jiangsu, China
| | - Jinhuan Wei
- Laboratory of Medical Science, School of Medicine, Nantong University, Nantong, Jiangsu, China
| | - Zhou Wang
- School of Life Sciences, Nantong University, Nantong, Jiangsu, China
| | - Aifen Liu
- Laboratory of Medical Science, School of Medicine, Nantong University, Nantong, Jiangsu, China
| | - Rong Sun
- Laboratory of Medical Science, School of Medicine, Nantong University, Nantong, Jiangsu, China
| | - Miaomiao Chen
- Laboratory of Medical Science, School of Medicine, Nantong University, Nantong, Jiangsu, China
| | - Yihui Fan
- Laboratory of Medical Science, School of Medicine, Nantong University, Nantong, Jiangsu, China.,Department of Pathogenic Biology, School of Medicine, Nantong University, Nantong, Jiangsu, China
| | - Renfang Mao
- Laboratory of Medical Science, School of Medicine, Nantong University, Nantong, Jiangsu, China.,Department of Pathophysiology, School of Medicine, Nantong University, Nantong, Jiangsu, China
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10
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Sun Z, Jiang Q, Li J, Guo J. The potent roles of salt-inducible kinases (SIKs) in metabolic homeostasis and tumorigenesis. Signal Transduct Target Ther 2020; 5:150. [PMID: 32788639 PMCID: PMC7423983 DOI: 10.1038/s41392-020-00265-w] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 07/22/2020] [Indexed: 01/26/2023] Open
Abstract
Salt-inducible kinases (SIKs) belong to AMP-activated protein kinase (AMPK) family, and functions mainly involve in regulating energy response-related physiological processes, such as gluconeogenesis and lipid metabolism. However, compared with another well-established energy-response kinase AMPK, SIK roles in human diseases, especially in diabetes and tumorigenesis, are rarely investigated. Recently, the pilot roles of SIKs in tumorigenesis have begun to attract more attention due to the finding that the tumor suppressor role of LKB1 in non-small-cell lung cancers (NSCLCs) is unexpectedly mediated by the SIK but not AMPK kinases. Thus, here we tend to comprehensively summarize the emerging upstream regulators, downstream substrates, mouse models, clinical relevance, and candidate inhibitors for SIKs, and shed light on SIKs as the potential therapeutic targets for cancer therapies.
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Affiliation(s)
- Zicheng Sun
- Institute of Precision Medicine, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, China.,Department of Breast and Thyroid Surgery, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, China
| | - Qiwei Jiang
- Institute of Precision Medicine, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, China
| | - Jie Li
- Department of Breast and Thyroid Surgery, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, China.
| | - Jianping Guo
- Institute of Precision Medicine, the First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, China.
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11
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Salt Inducible Kinase Signaling Networks: Implications for Acute Kidney Injury and Therapeutic Potential. Int J Mol Sci 2019; 20:ijms20133219. [PMID: 31262033 PMCID: PMC6651122 DOI: 10.3390/ijms20133219] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 02/06/2023] Open
Abstract
A number of signal transduction pathways are activated during Acute Kidney Injury (AKI). Of particular interest is the Salt Inducible Kinase (SIK) signaling network, and its effects on the Renal Proximal Tubule (RPT), one of the primary targets of injury in AKI. The SIK1 network is activated in the RPT following an increase in intracellular Na+ (Na+in), resulting in an increase in Na,K-ATPase activity, in addition to the phosphorylation of Class IIa Histone Deacetylases (HDACs). In addition, activated SIKs repress transcriptional regulation mediated by the interaction between cAMP Regulatory Element Binding Protein (CREB) and CREB Regulated Transcriptional Coactivators (CRTCs). Through their transcriptional effects, members of the SIK family regulate a number of metabolic processes, including such cellular processes regulated during AKI as fatty acid metabolism and mitochondrial biogenesis. SIKs are involved in regulating a number of other cellular events which occur during AKI, including apoptosis, the Epithelial to Mesenchymal Transition (EMT), and cell division. Recently, the different SIK kinase isoforms have emerged as promising drug targets, more than 20 new SIK2 inhibitors and activators having been identified by MALDI-TOF screening assays. Their implementation in the future should prove to be important in such renal disease states as AKI.
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12
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Pires NM, Igreja B, Serrão MP, Matias EF, Moura E, António T, Campos FL, Brion L, Bertorello A, Soares-da-Silva P. Acute salt loading induces sympathetic nervous system overdrive in mice lacking salt-inducible kinase 1 (SIK1). Hypertens Res 2019; 42:1114-1124. [DOI: 10.1038/s41440-019-0249-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 11/29/2018] [Accepted: 01/22/2019] [Indexed: 01/11/2023]
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13
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Fabrication and application of noble metal nanoclusters as optical sensors for toxic metal ions. Anal Bioanal Chem 2018; 410:2485-2498. [DOI: 10.1007/s00216-017-0808-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 12/03/2017] [Accepted: 12/06/2017] [Indexed: 12/24/2022]
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14
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Gao WW, Tang HMV, Cheng Y, Chan CP, Chan CP, Jin DY. Suppression of gluconeogenic gene transcription by SIK1-induced ubiquitination and degradation of CRTC1. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2018; 1861:211-223. [PMID: 29408765 DOI: 10.1016/j.bbagrm.2018.01.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 01/23/2018] [Accepted: 01/29/2018] [Indexed: 12/21/2022]
Abstract
CRTCs are a group of three transcriptional coactivators required for CREB-dependent transcription. CREB and CRTCs are critically involved in the regulation of various biological processes such as cell proliferation, metabolism, learning and memory. However, whether CRTC1 efficiently induces gluconeogenic gene expression and how CRTC1 is regulated by upstream kinase SIK1 remain to be understood. In this work, we demonstrated SIK1-induced phosphorylation, ubiquitination and degradation of CRTC1 in the context of the regulation of gluconeogenesis. CRTC1 protein was destabilized by SIK1 but not SIK2 or SIK3. This effect was likely mediated by phosphorylation at S155, S167, S188 and S346 residues of CRTC1 followed by K48-linked polyubiquitination and proteasomal degradation. Expression of gluconeogenic genes such as that coding for phosphoenolpyruvate carboxykinase was stimulated by CRTC1, but suppressed by SIK1. Depletion of CRTC1 protein also blocked forskolin-induced gluconeogenic gene expression, knockdown or pharmaceutical inhibition of SIK1 had the opposite effect. Finally, SIK1-induced ubiquitination of CRTC1 was mediated by RFWD2 ubiquitin ligase at a site not equivalent to K628 in CRTC2. Taken together, our work reveals a regulatory circuit in which SIK1 suppresses gluconeogenic gene transcription by inducing ubiquitination and degradation of CRTC1. Our findings have implications in the development of new antihyperglycemic agents.
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Affiliation(s)
- Wei-Wei Gao
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Hei-Man Vincent Tang
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Yun Cheng
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Ching-Ping Chan
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong
| | - Chi-Ping Chan
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
| | - Dong-Yan Jin
- School of Biomedical Sciences, The University of Hong Kong, Pokfulam, Hong Kong; State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
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15
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Affiliation(s)
- Wenhu Zhou
- Xiangya
School of Pharmaceutical Sciences, Central South University, Changsha, Hunan 410013, China
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Runjhun Saran
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Juewen Liu
- Department
of Chemistry, Water Institute, and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
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16
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Zhang Y, Takemori H, Wang C, Fu J, Xu M, Xiong L, Li N, Wen X. Role of salt inducible kinase 1 in high glucose-induced lipid accumulation in HepG2 cells and metformin intervention. Life Sci 2017; 173:107-115. [DOI: 10.1016/j.lfs.2017.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 01/21/2017] [Accepted: 02/02/2017] [Indexed: 01/14/2023]
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17
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Hosseinzadeh Z, Singh Y, Shimshek DR, van der Putten H, Wagner CA, Lang F. Leucine-Rich Repeat Kinase 2 (Lrrk2)-Sensitive Na +/K + ATPase Activity in Dendritic Cells. Sci Rep 2017; 7:41117. [PMID: 28120865 PMCID: PMC5264149 DOI: 10.1038/srep41117] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 12/14/2016] [Indexed: 12/18/2022] Open
Abstract
Leucine-rich repeat kinase 2 (Lrrk2) has been implicated in the pathophysiology of Parkinson's disease. Lrrk2 is expressed in diverse cells including neurons and dendritic cells (DCs). In DCs Lrrk2 was shown to up-regulate Na+/Ca2+-exchanger activity. The elimination of Ca2+ by Na+/Ca2+ -exchangers requires maintenance of the Na+ gradient by the Na+/K+ -ATPase. The present study thus explored whether Lrrk2 impacts on Na+/K+ -ATPase expression and function. To this end DCs were isolated from gene-targeted mice lacking Lrrk2 (Lrrk2-/-) and their wild-type littermates (Lrrk2+/+). Na+/K+ -ATPase activity was estimated from K+ induced, ouabain sensitive, current determined by whole cell patch clamp. Na+/K+ -ATPase α1 subunit transcript and protein levels were determined by RT-qPCR and flow cytometry. As a result, the K+ induced current was significantly smaller in Lrrk2-/- than in Lrrk2+/+ DCs and was completely abolished by ouabain (100 μM) in both genotypes. The K+ induced, ouabain sensitive, current in Lrrk2+/+ DCs was significantly blunted by Lrrk2 inhibitor GSK2578215A (1 μM, 24 hours). The Na+/K+ -ATPase α1 subunit transcript and protein levels were significantly lower in Lrrk2-/- than in Lrrk2+/+ DCs and significantly decreased by Lrrk2 inhibitor GSK2578215A (1 μM, 24 hours). In conclusion, Lrrk2 is a powerful regulator of Na+/K+ -ATPase expression and activity in dendritic cells.
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Affiliation(s)
- Zohreh Hosseinzadeh
- Department of Cardiology, Vascular Medicine and Physiology, University of Tübingen, Gmelinstr. 5, D-72076 Tübingen, Germany
- Experimental Retinal Prosthetics Group, Institute for Ophthalmic Research, University of Tübingen, Tübingen, Germany
| | - Yogesh Singh
- Department of Cardiology, Vascular Medicine and Physiology, University of Tübingen, Gmelinstr. 5, D-72076 Tübingen, Germany
| | - Derya R. Shimshek
- Department of Neuroscience, Novartis Institutes for BioMedical Research, CH-4002 Basel, Switzerland
| | - Herman van der Putten
- Department of Neuroscience, Novartis Institutes for BioMedical Research, CH-4002 Basel, Switzerland
- National Contest for Life (NCL) Foundation, 203555 Hamburg, Germany
| | - Carsten A. Wagner
- Institute of Physiology, University of Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
| | - Florian Lang
- Department of Cardiology, Vascular Medicine and Physiology, University of Tübingen, Gmelinstr. 5, D-72076 Tübingen, Germany
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18
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Zhou W, Ding J, Liu J. A Selective Na(+) Aptamer Dissected by Sensitized Tb(3+) Luminescence. Chembiochem 2016; 17:1563-70. [PMID: 27238890 DOI: 10.1002/cbic.201600174] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Indexed: 02/04/2023]
Abstract
A previous study of two RNA-cleaving DNAzymes, NaA43 and Ce13d, revealed the possibility of a common Na(+) aptamer motif. Because Na(+) binding to DNA is a fundamental biochemical problem, the interaction between Ce13d and Na(+) was studied in detail by using sensitized Tb(3+) luminescence spectroscopy. Na(+) displaces Tb(3+) from the DNAzyme, and thus quenches the emission from Tb(3+) . The overall requirement for Na(+) binding includes the hairpin and the highly conserved 16-nucleotide loop in the enzyme strand, along with a few unpaired nucleotides in the substrate. Mutation studies indicate good correlation between Na(+) binding and cleavage activity, thus suggesting a critical role of Na(+) binding for the enzyme activity. Ce13d displayed a Kd of ∼20 mm with Na(+) (other monovalent cations: 40-60 mm). The Kd values for other metal ions are mainly due to non-specific competition. With a single nucleotide mutation, the specific Na(+) binding was lost. Another mutant improved Kd to 8 mm with Na(+) . This study has demonstrated a Na(+) aptamer with important biological implications and analytical applications. It has also defined the structural requirements for Na(+) binding and produced an improved mutant.
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Affiliation(s)
- Wenhu Zhou
- School of Pharmaceutical Sciences, Central South University, 172 Tongzipo Road, Changsha, Hunan, 410013, China.,Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada
| | - Jinsong Ding
- School of Pharmaceutical Sciences, Central South University, 172 Tongzipo Road, Changsha, Hunan, 410013, China
| | - Juewen Liu
- School of Pharmaceutical Sciences, Central South University, 172 Tongzipo Road, Changsha, Hunan, 410013, China. .,Department of Chemistry, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON, N2L 3G1, Canada.
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19
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Taub M, Garimella S, Kim D, Rajkhowa T, Cutuli F. Renal proximal tubule Na,K-ATPase is controlled by CREB-regulated transcriptional coactivators as well as salt-inducible kinase 1. Cell Signal 2015; 27:2568-78. [PMID: 26432356 PMCID: PMC4696386 DOI: 10.1016/j.cellsig.2015.09.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/17/2015] [Accepted: 09/28/2015] [Indexed: 01/11/2023]
Abstract
Sodium reabsorption by the kidney is regulated by locally produced natriuretic and anti-natriuretic factors, including dopamine and norepinephrine, respectively. Previous studies indicated that signaling events initiated by these natriuretic and anti-natriuretic factors achieve their effects by altering the phosphorylation of Na,K-ATPase in the renal proximal tubule, and that protein kinase A (PKA) and calcium-mediated signaling pathways are involved. The same signaling pathways also control the transcription of the Na,K-ATPase β subunit gene atp1b1 in renal proximal tubule cells. In this report, evidence is presented that (1) both the recently discovered cAMP-regulated transcriptional coactivators (CRTCs) and salt-inducible kinase 1 (SIK1) contribute to the transcriptional regulation of atp1b1 in renal proximal tubule (RPT) cells and (2) renal effectors, including norepinephrine, dopamine, prostaglandins, and sodium, play a role. Exogenously expressed CRTCs stimulate atp1b1 transcription. Evidence for a role of endogenous CRTCs includes the loss of transcriptional regulation of atp1b1 by a dominant-negative CRTC, as well as by a CREB mutant, with an altered CRTC binding site. In a number of experimental systems, SIK phosphorylates CRTCs, which are then sequestered in the cytoplasm, preventing their nuclear effects. Consistent with such a role of SIK in primary RPT cells, atp1b1 transcription increased in the presence of a dominant-negative SIK1, and in addition, regulation by dopamine, norepinephrine, and monensin was disrupted by a dominant-negative SIK1. These latter observations can be explained if SIK1 is phosphorylated and inactivated in the presence of these renal effectors. Our results support the hypothesis that Na,K-ATPase in the renal proximal tubule is regulated at the transcriptional level via SIK1 and CRTCs by renal effectors, in addition to the previously reported control of the phosphorylation of Na,K-ATPase.
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Affiliation(s)
- Mary Taub
- Biochemistry Department,School of Medicine and Biomedical SciencesUniversity at Buffalo,140 Farber Hall, 3435 Main Street,Buffalo, NY 14214, USA.
| | - Sudha Garimella
- Biochemistry Department,School of Medicine and Biomedical SciencesUniversity at Buffalo,140 Farber Hall, 3435 Main Street,Buffalo, NY 14214, USA
| | - Dongwook Kim
- Biochemistry Department,School of Medicine and Biomedical SciencesUniversity at Buffalo,140 Farber Hall, 3435 Main Street,Buffalo, NY 14214, USA
| | - Trivikram Rajkhowa
- Biochemistry Department,School of Medicine and Biomedical SciencesUniversity at Buffalo,140 Farber Hall, 3435 Main Street,Buffalo, NY 14214, USA
| | - Facundo Cutuli
- Biochemistry Department,School of Medicine and Biomedical SciencesUniversity at Buffalo,140 Farber Hall, 3435 Main Street,Buffalo, NY 14214, USA
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20
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Hammon M, Grossmann S, Linz P, Kopp C, Dahlmann A, Garlichs C, Janka R, Cavallaro A, Luft FC, Uder M, Titze J. 23Na Magnetic Resonance Imaging of the Lower Leg of Acute Heart Failure Patients during Diuretic Treatment. PLoS One 2015; 10:e0141336. [PMID: 26501774 PMCID: PMC4621023 DOI: 10.1371/journal.pone.0141336] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2015] [Accepted: 08/24/2015] [Indexed: 11/23/2022] Open
Abstract
Objective Na+ can be stored in muscle and skin without commensurate water accumulation. The aim of this study was to assess Na+ and H2O in muscle and skin with MRI in acute heart failure patients before and after diuretic treatment and in a healthy cohort. Methods Nine patients (mean age 78 years; range 58–87) and nine age and gender-matched controls were studied. They underwent 23Na/1H-MRI at the calf with a custom-made knee coil. Patients were studied before and after diuretic therapy. 23Na-MRI gray-scale measurements of Na+-phantoms served to quantify Na+-concentrations. A fat-suppressed inversion recovery sequence was used to quantify H2O content. Results Plasma Na+-levels did not change during therapy. Mean Na+-concentrations in muscle and skin decreased after furosemide therapy (before therapy: 30.7±6.4 and 43.5±14.5 mmol/L; after therapy: 24.2±6.1 and 32.2±12.0 mmol/L; p˂0.05 and p˂0.01). Water content measurements did not differ significantly before and after furosemide therapy in muscle (p = 0.17) and only tended to be reduced in skin (p = 0.06). Na+-concentrations in calf muscle and skin of patients before and after diuretic therapy were significantly higher than in healthy subjects (18.3±2.5 and 21.1±2.3 mmol/L). Conclusions 23Na-MRI shows accumulation of Na+ in muscle and skin in patients with acute heart failure. Diuretic treatment can mobilize this Na+-deposition; however, contrary to expectations, water and Na+-mobilization are poorly correlated.
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Affiliation(s)
- Matthias Hammon
- Department of Radiology, University Hospital Erlangen, Erlangen, Germany
| | - Susan Grossmann
- Department of Radiology, University Hospital Erlangen, Erlangen, Germany
| | - Peter Linz
- Department of Nephrology and Hypertension, University Hospital Erlangen, Erlangen, Germany
| | - Christoph Kopp
- Department of Nephrology and Hypertension, University Hospital Erlangen, Erlangen, Germany
| | - Anke Dahlmann
- Department of Nephrology and Hypertension, University Hospital Erlangen, Erlangen, Germany
| | - Christoph Garlichs
- Department of Cardiology, University Hospital Erlangen, Erlangen, Germany
| | - Rolf Janka
- Department of Radiology, University Hospital Erlangen, Erlangen, Germany
| | | | - Friedrich C Luft
- Experimental and Clinical Research Center, Charité Medical Faculty and the Max Delbrück Center for Molecular Medicine, Berlin, Germany; Department of Medicine, Vanderbilt University, Nashville, Tennessee, United States of America
| | - Michael Uder
- Department of Radiology, University Hospital Erlangen, Erlangen, Germany
| | - Jens Titze
- Department of Medicine, Vanderbilt University, Nashville, Tennessee, United States of America
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21
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Chiaradonna F, Cirulli C, Palorini R, Votta G, Alberghina L. New Insights into the Connection Between Histone Deacetylases, Cell Metabolism, and Cancer. Antioxid Redox Signal 2015; 23:30-50. [PMID: 24483782 DOI: 10.1089/ars.2014.5854] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
SIGNIFICANCE Histone deacetylases (HDACs) activity and cell metabolism are considered important targets for cancer therapy, as both are deregulated and associated with the onset and maintenance of tumors. RECENT ADVANCES Besides the classical function of HDACs as HDAC enzymes controlling the transcription, it is becoming increasingly evident that these proteins are involved in the regulation of several other cellular processes by their ability to deacetylate hundreds of proteins with different functions in both the cytoplasm and the nucleus. Importantly, recent high-throughput studies have identified as important target proteins several enzymes involved in different metabolic pathways. Conversely, it has been also shown that metabolic intermediates may control HDACs activity. Consequently, the acetylation/deacetylation of metabolic enzymes and the ability of metabolic intermediates to modulate HDACs may represent a cross-talk connecting cell metabolism, transcription, and other HDACs-controlled processes in physiological and pathological conditions. CRITICAL ISSUES Since metabolic alterations and HDACs deregulation are important cancer hallmarks, disclosing connections among them may improve our understanding on cancer mechanisms and reveal novel therapeutic protocols against this disease. FUTURE DIRECTIONS High-throughput metabolic studies performed by using more sophisticated technologies applied to the available models of conditional deletion of HDACs in cell lines or in mice will fill the gap in the current understanding and open directions for future research.
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Affiliation(s)
- Ferdinando Chiaradonna
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
| | - Claudia Cirulli
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
| | - Roberta Palorini
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
| | - Giuseppina Votta
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
| | - Lilia Alberghina
- 1 SYSBIO Centre of Systems Biology , Milan, Italy .,2 Department of Biotechnology and Biosciences, University of Milano-Bicocca , Milan, Italy
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22
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Torabi SF, Wu P, McGhee CE, Chen L, Hwang K, Zheng N, Cheng J, Lu Y. In vitro selection of a sodium-specific DNAzyme and its application in intracellular sensing. Proc Natl Acad Sci U S A 2015; 112:5903-8. [PMID: 25918425 PMCID: PMC4434688 DOI: 10.1073/pnas.1420361112] [Citation(s) in RCA: 243] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Over the past two decades, enormous progress has been made in designing fluorescent sensors or probes for divalent metal ions. In contrast, the development of fluorescent sensors for monovalent metal ions, such as sodium (Na(+)), has remained underdeveloped, even though Na(+) is one the most abundant metal ions in biological systems and plays a critical role in many biological processes. Here, we report the in vitro selection of the first (to our knowledge) Na(+)-specific, RNA-cleaving deoxyribozyme (DNAzyme) with a fast catalytic rate [observed rate constant (ko(bs)) ∼ 0.1 min(-1)], and the transformation of this DNAzyme into a fluorescent sensor for Na(+) by labeling the enzyme strand with a quencher at the 3' end, and the DNA substrate strand with a fluorophore and a quencher at the 5' and 3' ends, respectively. The presence of Na(+) catalyzed cleavage of the substrate strand at an internal ribonucleotide adenosine (rA) site, resulting in release of the fluorophore from its quenchers and thus a significant increase in fluorescence signal. The sensor displays a remarkable selectivity (>10,000-fold) for Na(+) over competing metal ions and has a detection limit of 135 µM (3.1 ppm). Furthermore, we demonstrate that this DNAzyme-based sensor can readily enter cells with the aid of α-helical cationic polypeptides. Finally, by protecting the cleavage site of the Na(+)-specific DNAzyme with a photolabile o-nitrobenzyl group, we achieved controlled activation of the sensor after DNAzyme delivery into cells. Together, these results demonstrate that such a DNAzyme-based sensor provides a promising platform for detection and quantification of Na(+) in living cells.
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Affiliation(s)
| | | | | | | | | | - Nan Zheng
- Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Jianjun Cheng
- Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Yi Lu
- Departments of Biochemistry, Chemistry, and Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
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23
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Orlov SN, Hamet P. Salt and gene expression: evidence for [Na+]i/[K+]i-mediated signaling pathways. Pflugers Arch 2014; 467:489-98. [PMID: 25479826 DOI: 10.1007/s00424-014-1650-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 10/27/2014] [Accepted: 11/07/2014] [Indexed: 01/11/2023]
Abstract
Our review focuses on the recent data showing that gene transcription and translation are under the control of signaling pathways triggered by modulation of the intracellular sodium/potassium ratio ([Na+]i/[K+]i). Side-by-side with sensing of osmolality elevation by tonicity enhancer-binding protein (TonEBP, NFAT5), [Na+]i/[K+]i-mediated excitation-transcription coupling may contribute to the transcriptomic changes evoked by high salt consumption. This novel mechanism includes the sensing of heightened Na+ concentration in the plasma, interstitial, and cerebrospinal fluids via augmented Na+ influx in the endothelium, immune system cells, and the subfornical organ, respectively. In these cells, [Na+]i/[K+]i ratio elevation, triggered by augmented Na+ influx, is further potentiated by increased production of endogenous Na+,K+-ATPase inhibitors documented in salt-sensitive hypertension.
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Affiliation(s)
- Sergei N Orlov
- Laboratory of Biological Membranes, Faculty of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1/12, Moscow, 119991, Russia,
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24
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Wolber LE, Girotto G, Buniello A, Vuckovic D, Pirastu N, Lorente-Cánovas B, Rudan I, Hayward C, Polasek O, Ciullo M, Mangino M, Steves C, Concas MP, Cocca M, Spector TD, Gasparini P, Steel KP, Williams FMK. Salt-inducible kinase 3, SIK3, is a new gene associated with hearing. Hum Mol Genet 2014; 23:6407-18. [PMID: 25060954 PMCID: PMC4222365 DOI: 10.1093/hmg/ddu346] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Hearing function is known to be heritable, but few significant and reproducible associations of genetic variants have been identified to date in the adult population. In this study, genome-wide association results of hearing function from the G-EAR consortium and TwinsUK were used for meta-analysis. Hearing ability in eight population samples of Northern and Southern European ancestry (n = 4591) and the Silk Road (n = 348) was measured using pure-tone audiometry and summarized using principal component (PC) analysis. Genome-wide association analyses for PC1-3 were conducted separately in each sample assuming an additive model adjusted for age, sex and relatedness of subjects. Meta-analysis was performed using 2.3 million single-nucleotide polymorphisms (SNPs) tested against each of the three PCs of hearing ability in 4939 individuals. A single SNP lying in intron 6 of the salt-inducible kinase 3 (SIK3) gene was found to be associated with hearing PC2 (P = 3.7×10(-8)) and further supported by whole-genome sequence in a subset. To determine the relevance of this gene in the ear, expression of the Sik3 protein was studied in mouse cochlea of different ages. Sik3 was expressed in murine hair cells during early development and in cells of the spiral ganglion during early development and adulthood. Our results suggest a developmental role of Sik3 in hearing and may be required for the maintenance of adult auditory function.
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Affiliation(s)
- Lisa E Wolber
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
| | - Giorgia Girotto
- Medical Genetics, Department of Reproductive Sciences, Development and Public Health, IRCCS-Burlo Garofolo Children Hospital, University of Trieste, Trieste 34100, Italy
| | - Annalisa Buniello
- Wolfson Centre for Age-Related Diseases, King's College London, London SE1 1UL, UK
| | - Dragana Vuckovic
- Medical Genetics, Department of Reproductive Sciences, Development and Public Health, IRCCS-Burlo Garofolo Children Hospital, University of Trieste, Trieste 34100, Italy
| | - Nicola Pirastu
- Medical Genetics, Department of Reproductive Sciences, Development and Public Health, IRCCS-Burlo Garofolo Children Hospital, University of Trieste, Trieste 34100, Italy
| | | | - Igor Rudan
- Centre for Population Health Sciences, University of Edinburgh, Teviot Place, Edinburgh EH8 9AG, UK
| | - Caroline Hayward
- MRC Human Genetics Unit, Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Edinburgh EH4 2XU, UK
| | - Ozren Polasek
- Department of Public Health, Faculty of Medicine, University of Split, Split 21000, Croatia
| | - Marina Ciullo
- Institute of Genetics and Biophysics "A. Buzzati-Traverso" CNR, Naples 80131, Italy and
| | - Massimo Mangino
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
| | - Claire Steves
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
| | - Maria Pina Concas
- Institute of Population Genetics, National Research Council of Italy, Sassari, Italy
| | - Massilimiliano Cocca
- Medical Genetics, Department of Reproductive Sciences, Development and Public Health, IRCCS-Burlo Garofolo Children Hospital, University of Trieste, Trieste 34100, Italy
| | - Tim D Spector
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK
| | - Paolo Gasparini
- Medical Genetics, Department of Reproductive Sciences, Development and Public Health, IRCCS-Burlo Garofolo Children Hospital, University of Trieste, Trieste 34100, Italy
| | - Karen P Steel
- Wolfson Centre for Age-Related Diseases, King's College London, London SE1 1UL, UK
| | - Frances M K Williams
- Department of Twin Research and Genetic Epidemiology, King's College London, London SE1 7EH, UK,
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Mäkinen VP, Civelek M, Meng Q, Zhang B, Zhu J, Levian C, Huan T, Segrè AV, Ghosh S, Vivar J, Nikpay M, Stewart AFR, Nelson CP, Willenborg C, Erdmann J, Blakenberg S, O'Donnell CJ, März W, Laaksonen R, Epstein SE, Kathiresan S, Shah SH, Hazen SL, Reilly MP, Lusis AJ, Samani NJ, Schunkert H, Quertermous T, McPherson R, Yang X, Assimes TL. Integrative genomics reveals novel molecular pathways and gene networks for coronary artery disease. PLoS Genet 2014; 10:e1004502. [PMID: 25033284 PMCID: PMC4102418 DOI: 10.1371/journal.pgen.1004502] [Citation(s) in RCA: 154] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 05/27/2014] [Indexed: 12/13/2022] Open
Abstract
The majority of the heritability of coronary artery disease (CAD) remains unexplained, despite recent successes of genome-wide association studies (GWAS) in identifying novel susceptibility loci. Integrating functional genomic data from a variety of sources with a large-scale meta-analysis of CAD GWAS may facilitate the identification of novel biological processes and genes involved in CAD, as well as clarify the causal relationships of established processes. Towards this end, we integrated 14 GWAS from the CARDIoGRAM Consortium and two additional GWAS from the Ottawa Heart Institute (25,491 cases and 66,819 controls) with 1) genetics of gene expression studies of CAD-relevant tissues in humans, 2) metabolic and signaling pathways from public databases, and 3) data-driven, tissue-specific gene networks from a multitude of human and mouse experiments. We not only detected CAD-associated gene networks of lipid metabolism, coagulation, immunity, and additional networks with no clear functional annotation, but also revealed key driver genes for each CAD network based on the topology of the gene regulatory networks. In particular, we found a gene network involved in antigen processing to be strongly associated with CAD. The key driver genes of this network included glyoxalase I (GLO1) and peptidylprolyl isomerase I (PPIL1), which we verified as regulatory by siRNA experiments in human aortic endothelial cells. Our results suggest genetic influences on a diverse set of both known and novel biological processes that contribute to CAD risk. The key driver genes for these networks highlight potential novel targets for further mechanistic studies and therapeutic interventions. Sudden death due to heart attack ranks among the top causes of death in the world, and family studies have shown that genetics has a substantial effect on heart disease risk. Recent studies suggest that multiple genetic factors each with modest effects are necessary for the development of CAD, but the genes and molecular processes involved remain poorly understood. We conducted an integrative genomics study where we used the information of gene-gene interactions to capture groups of genes that are most likely to increase heart disease risk. We not only confirmed the importance of several known CAD risk processes such as the metabolism and transport of cholesterol, immune response, and blood coagulation, but also revealed many novel processes such as neuroprotection, cell cycle, and proteolysis that were not previously implicated in CAD. In particular, we highlight several genes such as GLO1 with key regulatory roles within these processes not detected by the first wave of genetic analyses. These results highlight the value of integrating population genetic data with diverse resources that functionally annotate the human genome. Such integration facilitates the identification of novel molecular processes involved in the pathogenesis of CAD as well as potential novel targets for the development of efficacious therapeutic interventions.
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Affiliation(s)
- Ville-Petteri Mäkinen
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, California, United States of America
- South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
- School of Molecular and Biomedical Science, University of Adelaide, Adelaide, South Australia, Australia
| | - Mete Civelek
- Department of Medicine/Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Qingying Meng
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Bin Zhang
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Jun Zhu
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, United States of America
| | - Candace Levian
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Tianxiao Huan
- National Heart, Lung, and Blood Institute's Framingham Heart Study, Framingham, Massachusetts, United States of America
| | - Ayellet V. Segrè
- Broad Institute of Harvard and MIT, Cambridge, Massachusetts, United States of America
| | - Sujoy Ghosh
- Department of Cardiovascular and Metabolic Research, Biomedical Biotechnology Research Institute, North Carolina Central University, Durham, North Carolina, United States of America
- Program in Cardiovascular and Metabolic Disorders and Centre for Computational Biology, Duke-NUS Graduate Medical School, Singapore
| | - Juan Vivar
- Department of Cardiovascular and Metabolic Research, Biomedical Biotechnology Research Institute, North Carolina Central University, Durham, North Carolina, United States of America
| | - Majid Nikpay
- Atherogenomics Laboratory, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Alexandre F. R. Stewart
- John and Jennifer Ruddy Canadian Cardiovascular Research Center, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Christopher P. Nelson
- Department of Cardiovascular Sciences, University of Leicester, Glenfield Hospital, Leicester, United Kingdom
- National Institute for Health Research (NIHR) Leicester Cardiovascular Biomedical Research Unit, Glenfield Hospital, Leicester, United Kingdom
| | - Christina Willenborg
- Institut für Integrative und Experimentelle Genomik, University of Lübeck, Lübeck, Germany
| | - Jeanette Erdmann
- Institut für Integrative und Experimentelle Genomik, University of Lübeck, Lübeck, Germany
- DZHK (German Research Centre for Cardiovascular Research), partner site Hamburg, Kiel, Lübeck, Germany
| | - Stefan Blakenberg
- Clinic for General and Interventional Cardiology, University Heart Center Hamburg, Hamburg, Germany
| | - Christopher J. O'Donnell
- National Heart, Lung, and Blood Institute's Framingham Heart Study, Framingham, Massachusetts, United States of America
- Cardiology Division, Center for Human Genetic Research, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Winfried März
- Mannheim Institute of Public Health, Social and Preventive Medicine, Medical Faculty of Mannheim, University of Heidelberg, Mannheim, Germany
- Synlab Academy, Mannheim, Germany
| | - Reijo Laaksonen
- Science Center, Tampere University Hospital, Tampere, Finland
| | - Stephen E. Epstein
- Cardiovascular Research Institute, Washington Hospital Center, Washington, D.C., United States of America
| | - Sekar Kathiresan
- National Heart, Lung, and Blood Institute's Framingham Heart Study, Framingham, Massachusetts, United States of America
- Cardiology Division, Center for Human Genetic Research, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
- Cardiovascular Research Center, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, United States of America
| | - Svati H. Shah
- Department of Medicine, Duke University Medical Center, Durham, North Carolina, United States of America
| | | | - Muredach P. Reilly
- Cardiovascular Institute, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | | | - Aldons J. Lusis
- Department of Medicine/Division of Cardiology, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Nilesh J. Samani
- Department of Cardiovascular Sciences, University of Leicester, Glenfield Hospital, Leicester, United Kingdom
- National Institute for Health Research (NIHR) Leicester Cardiovascular Biomedical Research Unit, Glenfield Hospital, Leicester, United Kingdom
| | - Heribert Schunkert
- DZHK (German Research Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
- Deutsches Herzzentrum München, Technische Universität München, Munich, Germany
| | - Thomas Quertermous
- Department of Medicine, Stanford University School of Medicine, Stanford, California, United States of America
| | - Ruth McPherson
- Atherogenomics Laboratory, University of Ottawa Heart Institute, Ottawa, Ontario, Canada
| | - Xia Yang
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, California, United States of America
- * E-mail: (XY); (TLA)
| | - Themistocles L. Assimes
- Department of Medicine, Stanford University School of Medicine, Stanford, California, United States of America
- * E-mail: (XY); (TLA)
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26
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Popov S, Takemori H, Tokudome T, Mao Y, Otani K, Mochizuki N, Pires N, Pinho MJ, Franco-Cereceda A, Torielli L, Ferrandi M, Hamsten A, Soares-da-Silva P, Eriksson P, Bertorello AM, Brion L. Lack of salt-inducible kinase 2 (SIK2) prevents the development of cardiac hypertrophy in response to chronic high-salt intake. PLoS One 2014; 9:e95771. [PMID: 24752134 PMCID: PMC3994160 DOI: 10.1371/journal.pone.0095771] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Accepted: 03/28/2014] [Indexed: 01/01/2023] Open
Abstract
Cardiac left ventricle hypertrophy (LVH) constitutes a major risk factor for heart failure. Although LVH is most commonly caused by chronic elevation in arterial blood pressure, reduction of blood pressure to normal levels does not always result in regression of LVH, suggesting that additional factors contribute to the development of this pathology. We tested whether genetic preconditions associated with the imbalance in sodium homeostasis could trigger the development of LVH without concomitant increases in blood pressure. The results showed that the presence of a hypertensive variant of α-adducin gene in Milan rats (before they become hypertensive) resulted in elevated expression of genes associated with LVH, and of salt-inducible kinase 2 (SIK2) in the left ventricle (LV). Moreover, the mRNA expression levels of SIK2, α-adducin, and several markers of cardiac hypertrophy were positively correlated in tissue biopsies obtained from human hearts. In addition, we found in cardiac myocytes that α-adducin regulates the expression of SIK2, which in turn mediates the effects of adducin on hypertrophy markers gene activation. Furthermore, evidence that SIK2 is critical for the development of LVH in response to chronic high salt diet (HS) was obtained in mice with ablation of the sik2 gene. Increases in the expression of genes associated with LVH, as well as increases in LV wall thickness upon HS, occurred only in sik2+/+ but not in sik2−/− mice. Thus LVH triggered by HS or the presence of a genetic variant of α-adducin requires SIK2 and is independent of elevated blood pressure. Inhibitors of SIK2 may constitute part of a novel therapeutic regimen aimed at prevention/regression of LVH.
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Affiliation(s)
- Sergej Popov
- Membrane Signaling Networks, Department of Medicine, Karolinska Institutet, CMM, Karolinska University Hospital-Solna, Stockholm, Sweden
| | - Hiroshi Takemori
- Laboratory of Cell Signaling and Metabolism, National Institute for Biomedical Innovation, Osaka, Japan
| | - Takeshi Tokudome
- Department of Biochemistry, National Cerebral and Cardiovascular Research Institute, Osaka, Japan
| | - Yuanjie Mao
- Department of Biochemistry, National Cerebral and Cardiovascular Research Institute, Osaka, Japan
| | - Kentaro Otani
- Regenerative Medicine and Tissue Engineering, National Cerebral and Cardiovascular Research Institute, Osaka, Japan
| | - Naoki Mochizuki
- Cell Biology, National Cerebral and Cardiovascular Research Institute, Osaka, Japan
| | - Nuno Pires
- BIAL - Portela & C, S.A., S. Mamede do Coronado, Portugal
| | - Maria João Pinho
- MedInUP - Center for Drug Discovery and Innovative Medicines, University of Porto, Porto, Portugal
| | - Anders Franco-Cereceda
- Cardiothoracic Surgery Unit, Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Lucia Torielli
- Prassis Sigma-Tau Research Institute, Settimo Milanese, Milan, Italy
| | - Mara Ferrandi
- Prassis Sigma-Tau Research Institute, Settimo Milanese, Milan, Italy
| | - Anders Hamsten
- Cardiovascular Genetics and Genomics, Department of Medicine, Karolinska Institutet, CMM, Karolinska University Hospital-Solna, Stockholm, Sweden
| | - Patricio Soares-da-Silva
- BIAL - Portela & C, S.A., S. Mamede do Coronado, Portugal
- MedInUP - Center for Drug Discovery and Innovative Medicines, University of Porto, Porto, Portugal
| | - Per Eriksson
- Cardiovascular Genetics and Genomics, Department of Medicine, Karolinska Institutet, CMM, Karolinska University Hospital-Solna, Stockholm, Sweden
| | - Alejandro M. Bertorello
- Membrane Signaling Networks, Department of Medicine, Karolinska Institutet, CMM, Karolinska University Hospital-Solna, Stockholm, Sweden
| | - Laura Brion
- Membrane Signaling Networks, Department of Medicine, Karolinska Institutet, CMM, Karolinska University Hospital-Solna, Stockholm, Sweden
- * E-mail:
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Egbuonu AC, Ijeh II, Ezeanyika LU, Obidoa OO. Influence of L-arginine on the Heart Histology and Function Markers of Metabolic Syndrome in Female Wistar Albino Rats. JOURNAL OF MEDICAL SCIENCES 2013. [DOI: 10.3923/jms.2013.276.282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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28
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Emorine M, Septier C, Thomas-Danguin T, Salles C. Heterogeneous salt distribution in hot snacks enhances saltiness without loss of acceptability. Food Res Int 2013. [DOI: 10.1016/j.foodres.2013.01.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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29
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Kopp C, Linz P, Dahlmann A, Hammon M, Jantsch J, Müller DN, Schmieder RE, Cavallaro A, Eckardt KU, Uder M, Luft FC, Titze J. 23Na magnetic resonance imaging-determined tissue sodium in healthy subjects and hypertensive patients. Hypertension 2013; 61:635-40. [PMID: 23339169 DOI: 10.1161/hypertensionaha.111.00566] [Citation(s) in RCA: 289] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
High dietary salt intake is associated with hypertension; the prevalence of salt-sensitive hypertension increases with age. We hypothesized that tissue Na(+) might accumulate in hypertensive patients and that aging might be accompanied by Na(+) deposition in tissue. We implemented (23)Na magnetic resonance imaging to measure Na(+) content of soft tissues in vivo earlier, but had not studied essential hypertension. We report on a cohort of 56 healthy control men and women, and 57 men and women with essential hypertension. The ages ranged from 22 to 90 years. (23)Na magnetic resonance imaging measurements were made at the level of the calf. We observed age-dependent increases in Na(+) content in muscle in men, whereas muscle Na(+) content did not change with age in women. We estimated water content with conventional MRI and found no age-related increases in muscle water in men, despite remarkable Na(+) accumulation, indicating water-free Na(+) storage in muscle. With increasing age, there was Na(+) deposition in the skin in both women and men; however, skin Na(+) content remained lower in women. Similarly, this sex difference was found in skin water content, which was lower in women than in men. In contrast to muscle, increasing Na(+) content was paralleled with increasing skin water content. When controlled for age, we found that patients with refractory hypertension had increased tissue Na(+) content, compared with normotensive controls. These observations suggest that (23)Na magnetic resonance imaging could have utility in assessing the role of tissue Na(+) storage for cardiovascular morbidity and mortality in longitudinal studies.
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Affiliation(s)
- Christoph Kopp
- Vanderbilt University School of Medicine, Vanderbilt University, Nashville, TN 37232, USA
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30
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The information provided by the adrenal cortical steroids: a hypothesis. J Theor Biol 2012; 311:66-8. [PMID: 22771899 DOI: 10.1016/j.jtbi.2012.06.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 06/28/2012] [Indexed: 11/20/2022]
Abstract
We present the hypothesis that in vertebrates their closed blood circulation facilitated the evolution of the adrenal cortex as a central processing unit that provides the rest of the body with information on the effect of changes in the blood glucose and sodium levels on the functioning of the mitochondria, and of sodium transporters in the adrenal cortex. When cells in the glomerulosa can no longer increase the synthesis of aldosterone, the message to the body is that a higher level of sodium in the blood may damage the cells. When the fasiculata cells cannot increase the synthesis of glucorticoids, the message to the body is that their mitochondria cannot produce more ATP, and that higher levels of glucose in the blood may harm the organism.
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31
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New Insights into the Regulation of Na+,K+-ATPase by Ouabain. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2012; 294:99-132. [DOI: 10.1016/b978-0-12-394305-7.00002-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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32
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Marques FZ, Campain AE, Tomaszewski M, Zukowska-Szczechowska E, Yang YHJ, Charchar FJ, Morris BJ. Gene expression profiling reveals renin mRNA overexpression in human hypertensive kidneys and a role for microRNAs. Hypertension 2011; 58:1093-8. [PMID: 22042811 DOI: 10.1161/hypertensionaha.111.180729] [Citation(s) in RCA: 175] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The kidney has long been invoked in the etiology of essential hypertension. This could involve alterations in expression of specific genes and microRNAs (miRNAs). The aim of the present study was to identify, at the transcriptome-wide level, mRNAs and miRNAs that were differentially expressed between kidneys of 15 untreated hypertensive and 7 normotensive white male subjects of white European ancestry. By microarray technology we found 14 genes and 11 miRNAs that were differentially expressed in the medulla. We then selected and confirmed by real-time quantitative PCR expression differences for NR4A1, NR4A2, NR4A3, PER1, and SIK1 mRNAs and for the miRNAs hsa-miR-638 and hsa-let-7c. Luciferase reporter gene experiments in human kidney (HEK293) cells confirmed the predicted binding of hsa-let-7c to the 3' untranslated region of NR4A2 mRNA. In the renal cortex we found differential expression of 46 genes and 13 miRNAs. We then confirmed expression differences for AIFM1, AMBP, APOE, CD36, EFNB1, NDUFAF1, PRDX5, REN, RENBP, SLC13A1, STX4, and TNNT2 mRNAs and for miRNAs hsa-miR-21, hsa-miR-126, hsa-miR-181a, hsa-miR-196a, hsa-miR-451, hsa-miR-638, and hsa-miR-663. Functional experiments in HEK293 cells demonstrated that hsa-miR-663 can bind to the REN and APOE 3' untranslated regions and can regulate REN and APOE mRNA levels, whereas hsa-miR-181a regulated REN and AIFM1 mRNA. Our data demonstrated for the first time that miRNAs can regulate renin expression. The observed downregulation of 2 miRNAs in hypertension could explain the elevation in intrarenal renin mRNA. Renin, CD36, and other mRNAs, as well as miRNAs and associated pathways identified in the present study, provide novel insights into hypertension etiology.
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Affiliation(s)
- Francine Z Marques
- Basic & Clinical Genomics Laboratory, School of Medical Sciences and Bosch Institute, Building F13, University of Sydney, Sydney, New South Wales 2006, Australia
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Sekizawa N, Yoshimoto T, Hayakawa E, Suzuki N, Sugiyama T, Hirata Y. Transcriptome analysis of aldosterone-regulated genes in human vascular endothelial cell lines stably expressing mineralocorticoid receptor. Mol Cell Endocrinol 2011; 341:78-88. [PMID: 21664252 DOI: 10.1016/j.mce.2011.05.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 04/03/2011] [Accepted: 05/12/2011] [Indexed: 12/13/2022]
Abstract
A series of studies have demonstrated that endothelial cell is one of the target tissues of aldosterone. Here, we have conducted a transcriptome analysis of aldosterone-inducible genes in human endothelial cell lines stably expressing human mineralocorticoid receptor (MR) by retroviral system (MR-EAhy). We found that aldosterone in physiologic concentrations robustly induced MR-dependent transcriptional response in MR-EAhy. By DNA microarray analysis, we validated 12 aldosterone-up-regulated genes among which at least seven were concomitantly associated with increased protein expression. We also found five aldosterone-down-regulated genes. Among 11 aldosterone-up-regulated genes tested, mRNA expressions of three (ESM1, SNF1LK, ANGPTL4) were significantly up-regulated in aortic tissue from aldosterone-induced hypertensive rats compared to those from control rats, suggesting their potential pathophysiologic significance in vivo. In conclusion, using MR stably expressed human endothelial cell lines, we identified a variety of aldosterone-inducible genes, suggesting their possible roles in the development and/or the protection for aldosterone-induced vascular injury.
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Affiliation(s)
- Naoko Sekizawa
- Department of Clinical and Molecular Endocrinology, Tokyo Medical and Dental University Graduate School, Bunkyo-ku, Tokyo 113-8519, Japan
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Al Moamen NJ, Prasad V, Bodi I, Miller ML, Neiman ML, Lasko VM, Alper SL, Wieczorek DF, Lorenz JN, Shull GE. Loss of the AE3 anion exchanger in a hypertrophic cardiomyopathy model causes rapid decompensation and heart failure. J Mol Cell Cardiol 2010; 50:137-46. [PMID: 21056571 DOI: 10.1016/j.yjmcc.2010.10.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 10/13/2010] [Accepted: 10/24/2010] [Indexed: 02/08/2023]
Abstract
The AE3 Cl(-)/HCO(3)(-) exchanger is abundantly expressed in the sarcolemma of cardiomyocytes, where it mediates Cl(-)-uptake and HCO(3)(-)-extrusion. Inhibition of AE3-mediated Cl(-)/HCO(3)(-) exchange has been suggested to protect against cardiac hypertrophy; however, other studies indicate that AE3 might be necessary for optimal cardiac function. To test these hypotheses we crossed AE3-null mice, which appear phenotypically normal, with a hypertrophic cardiomyopathy mouse model carrying a Glu180Gly mutation in α-tropomyosin (TM180). Loss of AE3 had no effect on hypertrophy; however, survival of TM180/AE3 double mutants was sharply reduced compared with TM180 single mutants. Analysis of cardiac performance revealed impaired cardiac function in TM180 and TM180/AE3 mutants. TM180/AE3 double mutants were more severely affected and exhibited little response to β-adrenergic stimulation, a likely consequence of their more rapid progression to heart failure. Increased expression of calmodulin-dependent kinase II and protein phosphatase 1 and differences in methylation and localization of protein phosphatase 2A were observed, but were similar in single and double mutants. Phosphorylation of phospholamban on Ser16 was sharply increased in both single and double mutants relative to wild-type hearts under basal conditions, leading to reduced reserve capacity for β-adrenergic stimulation of phospholamban phosphorylation. Imaging analysis of isolated myocytes revealed reductions in amplitude and decay of Ca(2+) transients in both mutants, with greater reductions in TM180/AE3 mutants, consistent with the greater severity of their heart failure phenotype. Thus, in the TM180 cardiomyopathy model, loss of AE3 had no apparent anti-hypertrophic effect and led to more rapid decompensation and heart failure.
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Affiliation(s)
- Nabeel J Al Moamen
- Department of Molecular Genetics, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
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