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Ono K, Sato J, Suzuki H, Sawada M. Distribution of Signal Peptides in Microvesicles from Activated Macrophage Cells. Int J Mol Sci 2023; 24:12131. [PMID: 37569508 PMCID: PMC10418841 DOI: 10.3390/ijms241512131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
Extracellular vesicles, such as microvesicles (LEV) and exosomes (SEV), play an important role in intercellular signaling by encapsulating functional molecules and delivering them to specific cells. Recent studies showed that signal peptides (SPs), which are derived from sequences at the N-terminal of newly synthesized proteins, exhibited biological activity in the extracellular fluid. We previously reported that SPs were secreted into the extracellular fluid via SEV; however, it remains unclear whether the release of SPs occurs via LEV. In the present study, we demonstrated that SP fragments from human placental secreted alkaline phosphatase (SEAP) were present in LEV as well as SEV released from RAW-Blue cells, which stably express an NF-κB-inducible SEAP reporter. When RAW-Blue cells were treated with LPS at 0-10,000 ng/mL, SEAP SP fragments per particle were more abundant in LEV than in SEV, with fragments in LEV and SEV reaching a maximum at 1000 and 100 ng/mL, respectively. The content of SEAP SP fragments in LEV from IFNγ-stimulated RAW-Blue cells was higher than those from TNFα-stimulated cells, whereas that in SEV from TNFα-stimulated RAW-Blue cells was higher than those from IFNγ-stimulated cells. Moreover, the content of SEAP SP fragments in LEV and SEV decreased in the presence of W13, a calmodulin inhibitor. Collectively, these results indicate that the transportation of SP fragments to extracellular vesicles was changed by cellular activation, and calmodulin was involved in their transportation to LEV and SEV.
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Affiliation(s)
- Kenji Ono
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan (H.S.); (M.S.)
- Department of Molecular Pharmacokinetics, Nagoya University Graduate School of Medicine, Nagoya 464-8601, Aichi, Japan
| | - Junpei Sato
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan (H.S.); (M.S.)
- Department of Molecular Pharmacokinetics, Nagoya University Graduate School of Medicine, Nagoya 464-8601, Aichi, Japan
| | - Hiromi Suzuki
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan (H.S.); (M.S.)
- Department of Molecular Pharmacokinetics, Nagoya University Graduate School of Medicine, Nagoya 464-8601, Aichi, Japan
| | - Makoto Sawada
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan (H.S.); (M.S.)
- Department of Molecular Pharmacokinetics, Nagoya University Graduate School of Medicine, Nagoya 464-8601, Aichi, Japan
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2
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Ono K, Niwa M, Suzuki H, Kobayashi NB, Yoshida T, Sawada M. Calmodulin as a Key Regulator of Exosomal Signal Peptides. Cells 2022; 12:cells12010158. [PMID: 36611951 PMCID: PMC9818429 DOI: 10.3390/cells12010158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 12/16/2022] [Accepted: 12/27/2022] [Indexed: 01/04/2023] Open
Abstract
Signal peptides (SPs) and their fragments play important roles as biomarkers and substances with physiological functions in extracellular fluid. We previously reported that SP fragments were released into extracellular fluid via exosomes and bound to calmodulin (CaM), an exosomal component, in a cell-free system. However, it currently remains unclear whether CaM intracellularly interacts with SP fragments or is involved in the trafficking of these fragments to exosomes. Therefore, the present study examined the binding of CaM to SP fragments in T-REx AspALP cells, transformed HEK293 cells expressing amyloid precursor protein (APP) SP flanking a reporter protein, and their exosomes. APP SP fragments were detected in exosomes from T-REx AspALP cells in the absence of W13, a CaM inhibitor, but were present in lower amounts in exosomes from W13-treated cells. Cargo proteins, such as Alix, CD63, and CD81, were increased in W13-treated T-REx AspALP cells but were decreased in their exosomes. Furthermore, CaM interacted with heat shock protein 70 and CD81 in T-REx AspALP cells and this increased in the presence of W13. APP SP fragments were detected in intracellular CaM complexes in the absence of W13, but not in its presence. These results indicate that CaM functions as a key regulator of the transport of SP fragments into exosomes and plays novel roles in the sorting of contents during exosomal biogenesis.
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Affiliation(s)
- Kenji Ono
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan
- Department of Molecular Pharmacokinetics, Graduate School of Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan
- Correspondence: ; Tel.: +81-52-789-5002; Fax: +81-52-789-3994
| | - Mikio Niwa
- Institute for Advanced Sciences, Toagosei Co., Ltd., Tsukuba 300-2611, Ibaraki, Japan
| | - Hiromi Suzuki
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan
- Department of Molecular Pharmacokinetics, Graduate School of Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan
| | | | - Tetsuhiko Yoshida
- Institute for Advanced Sciences, Toagosei Co., Ltd., Tsukuba 300-2611, Ibaraki, Japan
| | - Makoto Sawada
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan
- Department of Molecular Pharmacokinetics, Graduate School of Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan
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3
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Goetze JP, Bartels ED, Shalmi TW, Andraud-Dang L, Rehfeld JF. Biochemistry of the Endocrine Heart. BIOLOGY 2022; 11:biology11070971. [PMID: 36101352 PMCID: PMC9311610 DOI: 10.3390/biology11070971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/22/2022] [Accepted: 06/24/2022] [Indexed: 11/25/2022]
Abstract
Simple Summary Besides being a muscle and an electrochemically active organ, the heart is a true endocrine organ. As endocrine cells, cardiac myocytes possess all the needed chemical necessities for translation, post-translational modifications, and complex peptide proteolysis. In addition, intracellular granules in the cells contain not only peptides destined for secretion but also important granin molecules involved in maintaining a regulated secretory pathway. In this review, we highlight the biochemical phenotype of the endocrine heart, recapitulating that the cardiac myocytes are truly and fully capable endocrine cells. Abstract Production and release of natriuretic peptides and other vasoactive peptides are tightly regulated in mammalian physiology and involved in cardiovascular homeostasis. As endocrine cells, the cardiac myocytes seem to possess almost all known chemical necessities for translation, post-translational modifications, and complex peptide proteolysis. In several ways, intracellular granules in the cells contain not only peptides destined for secretion but also important granin molecules involved in maintaining a regulated secretory pathway. In this review, we will highlight the biochemical phenotype of the endocrine heart recapitulating that the cardiac myocytes are capable endocrine cells. Understanding the basal biochemistry of the endocrine heart in producing and secreting peptides to circulation could lead to new discoveries concerning known peptide products as well as hitherto unidentified cardiac peptide products. In perspective, studies on natriuretic peptides in the heart have shown that the post-translational phase of gene expression is not only relevant for human physiology but may prove implicated also in the development and, perhaps one day, cure of human cardiovascular disease.
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Affiliation(s)
- Jens P Goetze
- Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, DK-2100 Copenhagen, Denmark
| | - Emil D Bartels
- Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, DK-2100 Copenhagen, Denmark
| | - Theodor W Shalmi
- Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, DK-2100 Copenhagen, Denmark
| | - Lilian Andraud-Dang
- Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, DK-2100 Copenhagen, Denmark
| | - Jens F Rehfeld
- Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, 9 Blegdamsvej, DK-2100 Copenhagen, Denmark
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Ono K, Niwa M, Suzuki H, Kobayashi NB, Yoshida T, Sawada M. Signal Sequence-Dependent Orientation of Signal Peptide Fragments to Exosomes. Int J Mol Sci 2022; 23:ijms23063137. [PMID: 35328557 PMCID: PMC8950404 DOI: 10.3390/ijms23063137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/09/2022] [Accepted: 03/11/2022] [Indexed: 12/04/2022] Open
Abstract
Signal peptides (SPs) not only mediate targeting to the endoplasmic reticulum (ER) but also play important roles as biomarkers and substances with physiological activity in extracellular fluids including blood. SPs are thought to be degraded intracellularly, making it unclear how they are transported from the ER to the extracellular fluid. In a recent study, we showed that a C-terminal fragment of the SP of a type I membrane protein, amyloid precursor protein (APP), was secreted into the extracellular fluid via exosomes using transformed HEK293 cells expressing APP SP flanking a reporter protein. In the present study, we demonstrate that a N-terminal fragment of the SP from a type II membrane protein, human placental secreted alkaline phosphatase (SEAP), is contained in exosomes and secreted into the extracellular fluid using HEK-Blue hTLR3 cells, which express both a human toll-like receptor 3 gene and an inducible SEAP reporter gene. When HEK-Blue hTLR3 cells were stimulated with a TLR3 ligand, a N-terminal fragment of SEAP SP in exosomes was increased in parallel with SEAP secretion in a concentration-dependent manner. These results indicated that SP fragments are exosomal components. In addition, migrating SP fragments were determined by characteristics of the signal–anchor sequence of membrane proteins. Furthermore, we found that SP fragments could bind to calmodulin (CALM), which is a cytosolic protein and also a component of exosomes, suggesting its involvement in the transportation of SP fragments from the endoplasmic reticulum to exosomes.
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Affiliation(s)
- Kenji Ono
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan; (H.S.); (M.S.)
- Department of Molecular Pharmacokinetics, Nagoya University Graduate School of Medicine, Nagoya 464-8601, Aichi, Japan
- Correspondence: ; Tel.: +81-52-789-5002; Fax: +81-52-789-3994
| | - Mikio Niwa
- Institute for Advanced Sciences, Toagosei Co., Ltd., Tsukuba 300-2611, Ibaraki, Japan; (M.N.); (N.B.K.); (T.Y.)
| | - Hiromi Suzuki
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan; (H.S.); (M.S.)
- Department of Molecular Pharmacokinetics, Nagoya University Graduate School of Medicine, Nagoya 464-8601, Aichi, Japan
| | - Nahoko Bailey Kobayashi
- Institute for Advanced Sciences, Toagosei Co., Ltd., Tsukuba 300-2611, Ibaraki, Japan; (M.N.); (N.B.K.); (T.Y.)
| | - Tetsuhiko Yoshida
- Institute for Advanced Sciences, Toagosei Co., Ltd., Tsukuba 300-2611, Ibaraki, Japan; (M.N.); (N.B.K.); (T.Y.)
| | - Makoto Sawada
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya 464-8601, Aichi, Japan; (H.S.); (M.S.)
- Department of Molecular Pharmacokinetics, Nagoya University Graduate School of Medicine, Nagoya 464-8601, Aichi, Japan
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5
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Ono K, Niwa M, Suzuki H, Kobayashi NB, Yoshida T, Sawada M. Secretion of signal peptides via extracellular vesicles. Biochem Biophys Res Commun 2021; 560:21-26. [PMID: 33964503 DOI: 10.1016/j.bbrc.2021.04.073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 04/18/2021] [Indexed: 11/26/2022]
Abstract
Signal peptides (SPs) consist of short peptide sequences present at the N-terminal of newly synthesizing proteins and act as a zip code for the translocation of the proteins to the endoplasmic reticulum (ER). It was thought that the SPs are intracellularly degraded after translocation to the ER; however, recent studies showed cleaved SPs have diverse roles for controlling cell functions in auto- and/or intercellular manners. In addition, it still remains obscure how SP fragments translocate away from the site where they are produced. Extracellular vesicles (EV) are important for intercellular communication and can transport functional molecules to specific cells. In this study, we show that SPs are involved in EV from T-REx AspALP cells that were transfected with a human APP SP-inducible expression vector. There was no difference in the average particle size or particle concentration of EV collected from T-REx AspALP cells and T-REx Mock cells. When the SP content in the EV was examined by mass spectrometry, the C-terminal fragment of APP SP was identified in the exosomes (SEV) of T-REx AspALP cells. In our preparation of SEV fractions, no ER-specific proteins were detected; therefore, SPs may be included in SEV but not in the debris of degraded ER. This is the first indication that SPs are secreted from cells via EV.
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Affiliation(s)
- Kenji Ono
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi, 464-8601, Japan; Department of Molecular Pharmacokinetics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, 464-8601, Japan.
| | - Mikio Niwa
- Institute for Advanced Sciences, Toagosei Co., Ltd., Tsukuba, Ibaraki, 300-2611, Japan
| | - Hiromi Suzuki
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi, 464-8601, Japan; Department of Molecular Pharmacokinetics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, 464-8601, Japan
| | | | - Tetsuhiko Yoshida
- Institute for Advanced Sciences, Toagosei Co., Ltd., Tsukuba, Ibaraki, 300-2611, Japan
| | - Makoto Sawada
- Department of Brain Function, Division of Stress Adaptation and Protection, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Aichi, 464-8601, Japan; Department of Molecular Pharmacokinetics, Nagoya University Graduate School of Medicine, Nagoya, Aichi, 464-8601, Japan
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6
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Polina I, Domondon M, Fox R, Sudarikova AV, Troncoso M, Vasileva VY, Kashyrina Y, Gooz MB, Schibalski RS, DeLeon-Pennell KY, Fitzgibbon WR, Ilatovskaya DV. Differential effects of low-dose sacubitril and/or valsartan on renal disease in salt-sensitive hypertension. Am J Physiol Renal Physiol 2020; 319:F63-F75. [PMID: 32463726 DOI: 10.1152/ajprenal.00125.2020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Diuretics and renin-angiotensin system blockers are often insufficient to control the blood pressure (BP) in salt-sensitive (SS) subjects. Abundant data support the proposal that the level of atrial natriuretic peptide may correlate with the pathogenesis of SS hypertension. We hypothesized here that increasing atrial natriuretic peptide levels with sacubitril, combined with renin-angiotensin system blockage by valsartan, can be beneficial for alleviation of renal damage in a model of SS hypertension, the Dahl SS rat. To induce a BP increase, rats were challenged with a high-salt 4% NaCl diet for 21 days, and chronic administration of vehicle or low-dose sacubitril and/or valsartan (75 μg/day each) was performed. Urine flow, Na+ excretion, and water consumption were increased on the high-salt diet compared with the starting point (0.4% NaCl) in all groups but remained similar among the groups at the end of the protocol. Upon salt challenge, we observed a mild decrease in systolic BP and urinary neutrophil gelatinase-associated lipocalin levels (indicative of alleviated tubular damage) in the valsartan-treated groups. Sacubitril, as well as sacubitril/valsartan, attenuated the glomerular filtration rate decline induced by salt. Alleviation of protein cast formation and lower renal medullary fibrosis were observed in the sacubitril/valsartan- and valsartan-treated groups, but not when sacubitril alone was administered. Interestingly, proteinuria was mildly mitigated only in rats that received sacubitril/valsartan. Further studies of the effects of sacubitril/valsartan in the setting of SS hypertension, perhaps involving a higher dose of the drug, are warranted to determine if it can interfere with the progression of the disease.
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Affiliation(s)
- Iuliia Polina
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Mark Domondon
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Rebecca Fox
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Anastasia V Sudarikova
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina.,Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | - Miguel Troncoso
- Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Valeriia Y Vasileva
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina.,Institute of Cytology, Russian Academy of Sciences, St. Petersburg, Russia
| | - Yuliia Kashyrina
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Monika Beck Gooz
- Department of Drug Discovery and Biomedical Sciences, Medical University of South Carolina, Charleston, South Carolina
| | - Ryan S Schibalski
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Kristine Y DeLeon-Pennell
- Division of Cardiology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina.,Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina
| | - Wayne R Fitzgibbon
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
| | - Daria V Ilatovskaya
- Division of Nephrology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
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7
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Abstract
Investigations into the mixed muscle-secretory phenotype of cardiomyocytes from the atrial appendages of the heart led to the discovery that these cells produce, in a regulated manner, two polypeptide hormones - the natriuretic peptides - referred to as atrial natriuretic factor or atrial natriuretic peptide (ANP) and brain or B-type natriuretic peptide (BNP), thereby demonstrating an endocrine function for the heart. Studies on the gene encoding ANP (NPPA) initiated the field of modern research into gene regulation in the cardiovascular system. Additionally, ANP and BNP were found to be the natural ligands for cell membrane-bound guanylyl cyclase receptors that mediate the effects of natriuretic peptides through the generation of intracellular cGMP, which interacts with specific enzymes and ion channels. Natriuretic peptides have many physiological actions and participate in numerous pathophysiological processes. Important clinical entities associated with natriuretic peptide research include heart failure, obesity and systemic hypertension. Plasma levels of natriuretic peptides have proven to be powerful diagnostic and prognostic biomarkers of heart disease. Development of pharmacological agents that are based on natriuretic peptides is an area of active research, with vast potential benefits for the treatment of cardiovascular disease.
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8
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Benitez-Amaro A, Revuelta-López E, Bornachea O, Cedó L, Vea À, Herrero L, Roglans N, Soler-Botija C, de Gonzalo-Calvo D, Nasarre L, Camino-López S, García E, Mato E, Blanco-Vaca F, Bayes-Genis A, Sebastian D, Laguna JC, Serra D, Zorzano A, Escola-Gil JC, Llorente-Cortes V. Low-density lipoprotein receptor-related protein 1 deficiency in cardiomyocytes reduces susceptibility to insulin resistance and obesity. Metabolism 2020; 106:154191. [PMID: 32112822 DOI: 10.1016/j.metabol.2020.154191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 02/14/2020] [Accepted: 02/24/2020] [Indexed: 02/09/2023]
Abstract
BACKGROUND Low-density lipoprotein receptor-related protein 1 (LRP1) plays a key role in fatty acid metabolism and glucose homeostasis. In the context of dyslipemia, LRP1 is upregulated in the heart. Our aim was to evaluate the impact of cardiomyocyte LRP1 deficiency on high fat diet (HFD)-induced cardiac and metabolic alterations, and to explore the potential mechanisms involved. METHODS We used TnT-iCre transgenic mice with thoroughly tested suitability to delete genes exclusively in cardiomyocytes to generate an experimental mouse model with conditional Lrp1 deficiency in cardiomyocytes (TNT-iCre+-LRP1flox/flox). FINDINGS Mice with Lrp1-deficient cardiomyocytes (cm-Lrp1-/-) have a normal cardiac function combined with a favorable metabolic phenotype against HFD-induced glucose intolerance and obesity. Glucose intolerance protection was linked to higher hepatic fatty acid oxidation (FAO), lower liver steatosis and increased whole-body energy expenditure. Proteomic studies of the heart revealed decreased levels of cardiac pro-atrial natriuretic peptide (pro-ANP), which was parallel to higher ANP circulating levels. cm-Lrp1-/- mice showed ANP signaling activation that was linked to increased fatty acid (FA) uptake and increased AMPK/ ACC phosphorylation in the liver. Natriuretic peptide receptor A (NPR-A) antagonist completely abolished ANP signaling and metabolic protection in cm-Lrp1-/- mice. CONCLUSIONS These results indicate that an ANP-dependent axis controlled by cardiac LRP1 levels modulates AMPK activity in the liver, energy homeostasis and whole-body metabolism.
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Affiliation(s)
- Aleyda Benitez-Amaro
- Institute of Biochemical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), Barcelona, Spain; Lipids and Cardiovascular Pathology Group, Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain
| | - Elena Revuelta-López
- Heart Failure and Cardiac Regeneration (ICREC) Research Program, Health Sciences Research Institute Germans Trias i Pujol (IGTP), Badalona, Barcelona, Spain; Centro de Investigación Biomédica en Red Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain
| | - Olga Bornachea
- Institute of Biochemical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), Barcelona, Spain; Lipids and Cardiovascular Pathology Group, Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain
| | - Lídia Cedó
- Metabolic Basis of Cardiovascular Risk, Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain
| | - Àngela Vea
- Institute of Biochemical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), Barcelona, Spain
| | - Laura Herrero
- Department of Biochemistry and Physiology, School of Pharmacy, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Nuria Roglans
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, School of Pharmacy and Food Sciences, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Spain
| | - Carolina Soler-Botija
- Heart Failure and Cardiac Regeneration (ICREC) Research Program, Health Sciences Research Institute Germans Trias i Pujol (IGTP), Badalona, Barcelona, Spain; Centro de Investigación Biomédica en Red Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain
| | - David de Gonzalo-Calvo
- Institute of Biochemical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), Barcelona, Spain; Lipids and Cardiovascular Pathology Group, Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain; Centro de Investigación Biomédica en Red Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain
| | - Laura Nasarre
- Institute of Biochemical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), Barcelona, Spain
| | - Sandra Camino-López
- Institute of Biochemical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), Barcelona, Spain
| | - Eduardo García
- Institute of Biochemical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), Barcelona, Spain; Lipids and Cardiovascular Pathology Group, Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain
| | - Eugenia Mato
- CIBER Bioingeniería, Biomateriales y Nanomedicina, CIBER-BBN, Instituto de Salud Carlos III, Madrid, Spain
| | - Francisco Blanco-Vaca
- Metabolic Basis of Cardiovascular Risk, Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain; Departament de Bioquímica, Biología Molecular i Biomedicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Antoni Bayes-Genis
- Heart Failure and Cardiac Regeneration (ICREC) Research Program, Health Sciences Research Institute Germans Trias i Pujol (IGTP), Badalona, Barcelona, Spain; Centro de Investigación Biomédica en Red Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain; Cardiology Service and Heart Failure Unit, Hospital Universitari Germans Trias i Pujol, Badalona, Spain, Department of Medicine, Autonomous University of Barcelona, Barcelona, Spain
| | - David Sebastian
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain; Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain; Departament de Bioquímica i Biomedicina Molecular, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Joan Carles Laguna
- Department of Pharmacology, Toxicology and Therapeutic Chemistry, School of Pharmacy and Food Sciences, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Spain
| | - Dolors Serra
- Department of Biochemistry and Physiology, School of Pharmacy, Institut de Biomedicina de la Universitat de Barcelona (IBUB), Universitat de Barcelona, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Madrid, Spain
| | - Antonio Zorzano
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain; Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Barcelona, Spain; Departament de Bioquímica i Biomedicina Molecular, Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Joan Carles Escola-Gil
- Metabolic Basis of Cardiovascular Risk, Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Madrid, Spain.
| | - Vicenta Llorente-Cortes
- Institute of Biochemical Research of Barcelona (IIBB)-Spanish National Research Council (CSIC), Barcelona, Spain; Lipids and Cardiovascular Pathology Group, Biomedical Research Institute Sant Pau (IIB Sant Pau), Barcelona, Spain; Centro de Investigación Biomédica en Red Enfermedades Cardiovasculares (CIBERCV), Instituto de Salud Carlos III, Madrid, Spain.
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9
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Abstract
Natriuretic peptides are structurally related, functionally diverse hormones. Circulating atrial natriuretic peptide (ANP) and brain natriuretic peptide (BNP) are delivered predominantly by the heart. Two C-type natriuretic peptides (CNPs) are paracrine messengers, notably in bone, brain, and vessels. Natriuretic peptides act by binding to the extracellular domains of three receptors, NPR-A, NPR-B, and NPR-C of which the first two are guanylate cyclases. NPR-C is coupled to inhibitory proteins. Atrial wall stress is the major regulator of ANP secretion; however, atrial pressure changes plasma ANP only modestly and transiently, and the relation between plasma ANP and atrial wall tension (or extracellular volume or sodium intake) is weak. Absence and overexpression of ANP-related genes are associated with modest blood pressure changes. ANP augments vascular permeability and reduces vascular contractility, renin and aldosterone secretion, sympathetic nerve activity, and renal tubular sodium transport. Within the physiological range of plasma ANP, the responses to step-up changes are unimpressive; in man, the systemic physiological effects include diminution of renin secretion, aldosterone secretion, and cardiac preload. For BNP, the available evidence does not show that cardiac release to the blood is related to sodium homeostasis or body fluid control. CNPs are not circulating hormones, but primarily paracrine messengers important to ossification, nervous system development, and endothelial function. Normally, natriuretic peptides are not powerful natriuretic/diuretic hormones; common conclusions are not consistently supported by hard data. ANP may provide fine-tuning of reno-cardiovascular relationships, but seems, together with BNP, primarily involved in the regulation of cardiac performance and remodeling. © 2017 American Physiological Society. Compr Physiol 8:1211-1249, 2018.
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Affiliation(s)
- Peter Bie
- Department of Cardiovascular and Renal Research, Institute of Molecular Medicine, University of Southern Denmark, Odense, Denmark
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Fu S, Ping P, Zhu Q, Ye P, Luo L. Brain Natriuretic Peptide and Its Biochemical, Analytical, and Clinical Issues in Heart Failure: A Narrative Review. Front Physiol 2018; 9:692. [PMID: 29922182 PMCID: PMC5996066 DOI: 10.3389/fphys.2018.00692] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 05/17/2018] [Indexed: 12/11/2022] Open
Abstract
Heart failure (HF) is a primary cause of morbidity and mortality worldwide. As the most widely studied and commonly applied natriuretic peptide (NP), B-type natriuretic peptide (BNP) has the effects of diuresis, natriuresis, vasodilation, anti-hypertrophy, and anti-fibrosis and it inhibits the renin-angiotensin-aldosterone and sympathetic nervous systems to maintain cardiorenal homeostasis and counteract the effects of HF. Both BNP and N-terminal pro B-type natriuretic peptide (NT-proBNP) are applied as diagnostic, managing, and prognostic tools for HF. However, due to the complexity of BNP system, the diversity of BNP forms and the heterogeneity of HF status, there are biochemical, analytical, and clinical issues on BNP not fully understood. Current immunoassays cross-react to varying degrees with pro B-type natriuretic peptide (proBNP), NT-proBNP and various BNP forms and cannot effectively differentiate between these forms. Moreover, current immunoassays have different results and may not accurately reflect cardiac function. It is essential to design assays that can recognize specific forms of BNP, NT-proBNP, and proBNP to obtain more clinical information. Not only the processing of proBNP (corin/furin) and BNP (neprilysin), but also the effects of glycosylation on proBNP processing and BNP assays, should be targeted in future studies to enhance their diagnostic, therapeutic, and prognostic values.
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Affiliation(s)
- Shihui Fu
- Department of Geriatric Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China.,Department of Cardiology and Hainan Branch, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Ping Ping
- Department of Pharmaceutical Care, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Qiwei Zhu
- Department of Geriatric Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Ping Ye
- Department of Geriatric Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China
| | - Leiming Luo
- Department of Geriatric Cardiology, Chinese People's Liberation Army General Hospital, Beijing, China
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11
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The multifaceted role of natriuretic peptides in metabolic syndrome. Biomed Pharmacother 2017; 92:826-835. [PMID: 28599248 DOI: 10.1016/j.biopha.2017.05.136] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 05/25/2017] [Accepted: 05/28/2017] [Indexed: 12/19/2022] Open
Abstract
Due to globalization and sophisticated western and sedentary lifestyle, metabolic syndrome has emerged as a serious public health challenge. Obesity is significantly increasing worldwide because of increased high calorie food intake and decreased physical activity leading to hypertension, dyslipidemia, atherosclerosis, and insulin resistance. Thus, metabolic syndrome constitutes cardiovascular disease, type 2 diabetes, obesity, and nonalcoholic fatty liver disease (NAFLD) and recently some cancers are also considered to be associated with this syndrome. There is increasing evidence of the involvement of natriuretic peptides (NP) in the pathophysiology of metabolic diseases. The natriuretic peptides are cardiac hormones, which are produced in the cardiac atrium, ventricles of the heart and the endothelium. These peptides are involved in the homeostatic control of body water, sodium intake, potassium transport, lipolysis in adipocytes and regulates blood pressure. The three known natriuretic peptide hormones present in the natriuretic system are atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP) and c-type natriuretic peptide (CNP). These three peptides primarily function as endogenous ligands and mainly act via their membrane receptors such as natriuretic peptide receptor A (NPR-A), natriuretic peptide receptor B (NPR-B) and natriuretic peptide receptor C (NPR-C) and regulate various physiological and metabolic functions. This review will shed light on the structure and function of natriuretic peptides and their receptors and their role in the metabolic syndrome.
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Solovyeva NI, Gureeva TA, Timoshenko OS, Moskvitina TA, Kugaevskaya EV. Furin as proprotein convertase and its role in normal and pathological biological processes. BIOCHEMISTRY (MOSCOW), SUPPLEMENT SERIES B: BIOMEDICAL CHEMISTRY 2017. [DOI: 10.1134/s1990750817020081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Nagai-Okatani C, Kangawa K, Minamino N. Three molecular forms of atrial natriuretic peptides: quantitative analysis and biological characterization. J Pept Sci 2017; 23:486-495. [PMID: 28120499 DOI: 10.1002/psc.2969] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/22/2016] [Accepted: 12/22/2016] [Indexed: 11/09/2022]
Abstract
Atrial natriuretic peptide (ANP) is primarily produced in the heart tissue and plays a pivotal role in maintaining cardiovascular homeostasis in endocrine and autocrine/paracrine systems and has clinical applications as a biomarker and a therapeutic agent for cardiac diseases. ANP is synthesized by atrial cardiomyocytes as a preprohormone that is processed by a signal peptidase and stored in secretory granules as a prohormone. Subsequent proteolytic processing of ANP by corin during the secretion process results in a bioactive form consisting of 28 amino acid residues. Mechanical stretch of the atrial wall and multiple humoral factors directly stimulates the transcription and secretion of ANP. Secreted ANP elicits natriuretic and diuretic effects via cyclic guanosine monophosphate produced through binding to the guanylyl cyclase-A/natriuretic peptide receptor-A. Circulating ANP is subjected to rapid clearance by a natriuretic peptide receptor-C-mediated mechanism and proteolytic degradation by neutral endopeptidase. In humans, ANP is present as three endogenous molecular forms: bioactive α-ANP, a homodimer of α-ANP designated as β-ANP, and an ANP precursor designated as proANP (also referred to as γ-ANP). The proANP and especially β-ANP, as minor forms in circulation, are notably increased in patients with cardiac diseases, suggesting the utility of monitoring the pathophysiological conditions that result in abnormal proANP processing that cannot be monitored by inactive N-terminal proANP-related fragments. Emerging plate-based sandwich immunoassays for individual quantitation of the three ANP forms enables evaluation of diagnostic implications and net ANP bioactivity. This new tool may provide further understanding in the pathophysiology of cardiac diseases. Copyright © 2017 European Peptide Society and John Wiley & Sons, Ltd.
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Affiliation(s)
- Chiaki Nagai-Okatani
- Biotechnology Research Institute for Drug Discovery, National Institute of Advanced Industrial Science and Technology, Ibaraki, Japan
| | - Kenji Kangawa
- National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Naoto Minamino
- Omics Research Center, National Cerebral and Cardiovascular Center, Osaka, Japan
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B-type natriuretic peptide signal peptide (BNPsp) in patients presenting with chest pain. Clin Biochem 2016; 49:645-650. [DOI: 10.1016/j.clinbiochem.2016.02.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Revised: 02/18/2016] [Accepted: 02/27/2016] [Indexed: 02/07/2023]
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15
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Semenov AG, Katrukha AG. Different Susceptibility of B-Type Natriuretic Peptide (BNP) and BNP Precursor (proBNP) to Cleavage by Neprilysin: The N-Terminal Part Does Matter. Clin Chem 2016; 62:617-22. [DOI: 10.1373/clinchem.2016.254524] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Accepted: 01/28/2016] [Indexed: 11/06/2022]
Abstract
Abstract
BACKGROUND
Protease neprilysin is known to be responsible for the degradation of natriuretic peptides. A recent heart failure (HF) drug, LCZ696 (EntrestoTM), that combines a neprilysin inhibitor and an angiotensin II receptor inhibitor was suggested to augment circulating B-type natriuretic peptide (BNP) concentrations, making the results of BNP measurements diagnostically ambiguous. Because the main form of measured BNP in HF patients is represented by its uncleaved precursor, proBNP, it is important to know the susceptibility of proBNP to cleavage by neprilysin.
METHODS
BNP 1–32 and nonglycosylated and glycosylated forms of proBNP 1–108 were incubated with neprilysin for different time periods. BNP immunoreactivity was analyzed using 2 sandwich immunoassays: one utilizing monoclonal antibody (mAb) KY-BNP-II (epitope 14–21) as capture with mAb 50E1 (epitope 26–32) for detection and a single-epitope sandwich BNP (SES-BNP) immunoassay specific to the epitope 11–17. Mass-spectrometry was applied to determine the sites of BNP cleavage.
RESULTS
In contrast to BNP, both forms of proBNP were resistant to degradation by neprilysin. The SES-BNP assay was much less susceptible to the BNP cleavage by neprilysin compared with the immunoassay utilizing antibodies specific to the region 14–21, comprising the site Arg17-Ile18, known as the site of BNP cleavage by neprilysin.
CONCLUSIONS
These findings suggest that modulation of neprilysin activity by specific inhibitors may not greatly influence the circulating concentrations of immunoreactive BNP, mostly represented in HF by proBNP, which is not susceptible to neprilysin. The different susceptibility of the BNP regions to neprilysin-dependent degradation highlights the importance of the choice of epitopes for reliable BNP immunodetection.
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Affiliation(s)
| | - Alexey G Katrukha
- HyTest Ltd., Turku, Finland
- School of Biology, Moscow State University, Moscow, Russia
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16
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Solovyeva N, Gureeva T, Timoshenko O, Moskvitina T, Kugaevskaya E. Furin as proprotein convertase and its role in normal and pathological biological processes. ACTA ACUST UNITED AC 2016; 62:609-621. [DOI: 10.18097/pbmc20166206609] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Furin belongs to serine intracellular Ca2+-dependent endopeptidases of the subtilisin family, also known as proprotein convertase (PC). Human furin is synthesized as zymogen with a molecular weight of 104 kDa, which is then activated by autocatalytic in two stages. This process can occur when zymogen migrates from the endoplasmic reticulum to the Golgi apparatus, where a large part of furin is accumulated. The molecular weigh t of the active furin is 98 kDa. Furin relates to enzymes with a narrow substrate specificity: it hydrolyzes peptide bonds at the site of paired basic amino acids and furin activity exhibits in a wide pH range 5-8. Its main biological function is activation of the functionally important protein precursors. It is accompanied by the launch of a cascade of reactions, which lead to appearance of biologically active molecules involved in realization of specific biological functions both in normal and in some patologicheskih processes. Furin substrates are biologically important proteins such as enzymes, hormones, growth factors and differentiation, receptors, adhesion proteins, proteins of blood plasma. Furin plays an important role in the development of processes such as proliferation, invasion, cell migration, survival, maintenance of homeostasis, embryogenesis, as well as the development of a number of pathologies, including cardiovascular, oncologic and neurodegenerative diseases. Furin and furin-like proprotein convertases participate as key factors in the realization of the regulatory functions of proteolytic enzymes, the value of which is currently being evaluated as most important in comparison with the degradative function of proteases.
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Affiliation(s)
| | - T.A. Gureeva
- Institute of Biomedical Chemistry, Moscow, Russia
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Lee J, Young J, Frampton C, Aldous S, Troughton R, Than M, Richards A, Pemberton C. A novel troponin T peptide in humans: Assay, biochemistry and preliminary findings in acute coronary syndromes. Int J Cardiol 2015; 190:68-74. [DOI: 10.1016/j.ijcard.2015.04.145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 03/17/2015] [Accepted: 04/16/2015] [Indexed: 10/23/2022]
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Lee J, Than M, Aldous S, Troughton R, Richards M, Pemberton CJ. CNP Signal Peptide in Patients with Cardiovascular Disease. Front Cardiovasc Med 2015; 2:28. [PMID: 26664899 PMCID: PMC4671342 DOI: 10.3389/fcvm.2015.00028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 05/30/2015] [Indexed: 11/30/2022] Open
Abstract
We have previously reported that signal peptide fragments of C-type natriuretic peptide (CNP) are present in the human circulation. Here, we provide the first preliminary assessment of the potential utility of CNP signal peptide (CNPsp) measurement in acute cardiovascular disease. Utilizing our specific and sensitive immunoassay, we assessed the potential of CNPsp measurement to assist in the identification of acute coronary syndromes in 494 patients presenting consecutively with chest pain. The diagnostic and prognostic potential of CNPsp were assessed in conjunction with a contemporary clinical troponin I assay, an investigational highly sensitive troponin T assay and NT-proBNP measurement. Utility was assessed via receiver operator curve characteristic analysis. CNPsp did not identify patients with myocardial infarction (MI) or those with unstable angina, nor did it assist the diagnostic ability of clinical or investigational troponin measurement. CNPsp levels were significantly elevated in patients presenting with atrial fibrillation (P < 0.05) and were significantly lower in those with a history of previous MI (P < 0.05). CNPsp could identify those at risk of mortality within 1 year (P < 0.05) and also could identify those at risk of death or re-infarction within 1 year (P < 0.01). This is the first exploratory report describing the potential of CNPsp measurement in acute cardiovascular disease. While CNPsp does not have utility in acute diagnosis, it may have potential in assisting risk prognosis with respect to mortality and re-infarction.
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Affiliation(s)
- Jacqui Lee
- Department of Medicine, Christchurch Heart Institute, University of Otago , Christchurch , New Zealand
| | - Martin Than
- Department of Medicine, Christchurch Heart Institute, University of Otago , Christchurch , New Zealand
| | - Sally Aldous
- Department of Medicine, Christchurch Heart Institute, University of Otago , Christchurch , New Zealand
| | - Richard Troughton
- Department of Medicine, Christchurch Heart Institute, University of Otago , Christchurch , New Zealand
| | - Mark Richards
- Department of Medicine, Christchurch Heart Institute, University of Otago , Christchurch , New Zealand
| | - Chris J Pemberton
- Department of Medicine, Christchurch Heart Institute, University of Otago , Christchurch , New Zealand
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Song W, Wang H, Wu Q. Atrial natriuretic peptide in cardiovascular biology and disease (NPPA). Gene 2015; 569:1-6. [PMID: 26074089 DOI: 10.1016/j.gene.2015.06.029] [Citation(s) in RCA: 130] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Revised: 05/18/2015] [Accepted: 06/09/2015] [Indexed: 12/11/2022]
Abstract
Atrial natriuretic peptide (ANP) is a cardiac hormone that regulates salt-water balance and blood pressure by promoting renal sodium and water excretion and stimulating vasodilation. ANP also has an anti-hypertrophic function in the heart, which is independent of its systemic blood pressure-lowering effect. In mice, ANP deficiency causes salt-sensitive hypertension and cardiac hypertrophy. Recent studies have shown that ANP plays an important role in regulating vascular remodeling and energy metabolism. Variants in the human NPPA gene, encoding the ANP precursor, are associated with hypertension, stroke, coronary artery disease, heart failure (HF) and obesity. ANP and related peptides are used as biomarkers for heart disease. Recombinant proteins and small molecules that enhance the ANP pathway have been developed to treat patients with HF. In this review, we discuss the role of ANP in cardiovascular biology and disease.
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Affiliation(s)
- Wei Song
- Departments of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA; First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Hao Wang
- Departments of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA; Department of Chemistry, Cleveland State University, Cleveland, OH 44155, USA
| | - Qingyu Wu
- Departments of Molecular Cardiology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH 44195, USA; Department of Chemistry, Cleveland State University, Cleveland, OH 44155, USA; Cyrus Tang Hematology Center, Soochow University, Suzhou 215123, China.
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20
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Taha MF, Javeri A. The expression of NPPA splice variants during mouse cardiac development. DNA Cell Biol 2014; 34:19-28. [PMID: 25260157 DOI: 10.1089/dna.2014.2600] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Natriuretic peptide precursor-A (NPPA) is an early and specific marker for functional myocardium of the embryonic heart. NPPA gene encodes for a precursor of atrial natriuretic peptide (ANP). So far, three alternatively spliced variants have been reported for NPPA in human. In mouse, no alternatively spliced transcript of NPPA has been reported. In the current study, we investigated the expression of NPPA gene during cardiac differentiation of mouse adipose-tissue-derived stem cells (ADSCs) and embryonic stem (ES) cells. As revealed by reverse-transcription polymerase chain reaction analysis, 2-week-differentiated cells expressed some cardiac-specific makers, including ANP. Three additional intron-retained splice variants of NPPA were also detected during cardiac differentiation of the ADSCs and ES cells. In addition, we detected three intron-retained splice variants of NPPA in 8.5-day mouse embryonic heart. In the mature cardiomyocytes of 1-week-old mice, only the correctly spliced isoform of NPPA gene was expressed. Freshly isolated stromal vascular fraction also expressed one intron-retained isoform of NPPA gene. In conclusion, our findings have provided evidence for the expression of intron-retained splices of NPPA mRNA during the early stages of mouse cardiogenesis as well as in the mouse adipose tissue.
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Affiliation(s)
- Masoumeh Fakhr Taha
- Department of Medical Biotechnology, National Institute of Genetic Engineering and Biotechnology (NIGEB) , Tehran, Iran
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21
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Goetze JP, Hansen LH, Terzic D, Zois NE, Albrethsen J, Timm A, Smith J, Soltysinska E, Lippert SK, Hunter I. Atrial natriuretic peptides in plasma. Clin Chim Acta 2014; 443:25-8. [PMID: 25158019 DOI: 10.1016/j.cca.2014.08.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 08/14/2014] [Accepted: 08/14/2014] [Indexed: 12/31/2022]
Abstract
Measurement of cardiac natriuretic peptides in plasma has gained a diagnostic role in the assessment of heart failure. Plasma measurement is though hampered by the marked instability of the hormones, which has led to the development of analyses that target N-terminal fragments from the prohormone. These fragments are stable in plasma and represent surrogate markers of the actual natriuretic hormone. Post-translational processing of the precursors, however, is revealing itself to be a complex event with new information still being reported on proteolysis, covalent modifications, and amino acid derivatizations. In this mini-review, we summarize measurement of the principal cardiac hormone, e.g. atrial natriuretic peptide (ANP) and its precursor fragments. We also highlight some of the analytical pitfalls and problems and the concurrent clinical "proof of concept". We conclude that biochemical research into proANP-derived peptides is still worthy of attention and that new biological insight may change our chemical perception of the markers.
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Affiliation(s)
- Jens P Goetze
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark.
| | - Lasse H Hansen
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | - Dijana Terzic
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | - Nora E Zois
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | - Jakob Albrethsen
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | - Annette Timm
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | - Julie Smith
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | - Ewa Soltysinska
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | - Solvej K Lippert
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
| | - Ingrid Hunter
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen, Denmark
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Abstract
Proteins and peptides are well-documented as useful marker adjuncts to cardiovascular clinical decision-making. Most markers measured derive from a defined, stable proprotein region of their respective gene. However, a neglected portion of preproproteins known as the signal peptide (SP) is also present in the circulation and may also present as a measurable marker. SPs were assumed to be degraded intracellularly after directing secretion, but a small, growing body of evidence is identifying SPs as not being degraded within and without cells. In this article, evidence for the persistence of SPs after translation is presented and their role as potential cardiovascular biomarkers is discussed.
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23
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Pemberton CJ, Siriwardena M, Kleffmann T, Richards AM. C-type natriuretic peptide (CNP) signal peptide fragments are present in the human circulation. Biochem Biophys Res Commun 2014; 449:301-6. [DOI: 10.1016/j.bbrc.2014.05.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 05/09/2014] [Indexed: 11/24/2022]
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25
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Yayan J. Emerging families of biomarkers for coronary artery disease: inflammatory mediators. Vasc Health Risk Manag 2013; 9:435-56. [PMID: 23983474 PMCID: PMC3751465 DOI: 10.2147/vhrm.s45704] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Introduction Inflammation has been implicated in the development of atherosclerosis in patients with acute coronary syndrome. C-reactive protein is an established nonspecific prognostic inflammatory biomarker for patients with acute coronary syndrome in the medical literature. This has led to a concerted effort to identify circulating inflammatory biomarkers to facilitate predicting the risk for and diagnosing coronary artery disease in at-risk subjects. The objective of this study was to search after novel inflammatory biomarkers reported as useful for diagnosing coronary artery disease. Methods The PubMed database was searched for reports published from January 1, 2000 to June 30, 2012 of novel circulating biomarkers for coronary artery disease in addition to the established biomarker, C-reactive protein. The search terms used were “infarction”, “biomarkers”, and “markers”, and only original articles describing clinical trials that were written in English were included. All published articles were separately examined carefully after novel inflammatory markers for acute coronary syndrome. All irrelevant publications without content pertaining to inflammatory biomarkers for acute coronary syndrome were excluded from this study. Our results reflect all articles concerning biomarkers in humans. Results The PubMed search yielded 4,415 research articles. After further analysis, all relevant published original articles examining 53 biomarkers were included in this review, which identified 46 inflammation biomarkers useful for detecting coronary artery disease. Conclusion The emergence of diverse novel biomarkers for coronary artery disease has provided insight into the varied pathophysiology of this disease. Inflammatory biomarkers have tremendous potential in aiding the prediction of acute coronary syndrome and recurrent ischemic episodes, and will eventually help improve patient care and management.
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Affiliation(s)
- Josef Yayan
- Department of internal Medicine, University Hospital of Saarland, Homburg/Saar, Germany.
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