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Nolze A, Matern S, Grossmann C. Calcineurin Is a Universal Regulator of Vessel Function-Focus on Vascular Smooth Muscle Cells. Cells 2023; 12:2269. [PMID: 37759492 PMCID: PMC10528183 DOI: 10.3390/cells12182269] [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: 07/19/2023] [Revised: 09/05/2023] [Accepted: 09/08/2023] [Indexed: 09/29/2023] Open
Abstract
Calcineurin, a serine/threonine phosphatase regulating transcription factors like NFaT and CREB, is well known for its immune modulatory effects and role in cardiac hypertrophy. Results from experiments with calcineurin knockout animals and calcineurin inhibitors indicate that calcineurin also plays a crucial role in vascular function, especially in vascular smooth muscle cells (VSMCs). In the aorta, calcineurin stimulates the proliferation and migration of VSMCs in response to vascular injury or angiotensin II administration, leading to pathological vessel wall thickening. In the heart, calcineurin mediates coronary artery formation and VSMC differentiation, which are crucial for proper heart development. In pulmonary VSMCs, calcineurin/NFaT signaling regulates the release of Ca2+, resulting in increased vascular tone followed by pulmonary arterial hypertension. In renal VSMCs, calcineurin regulates extracellular matrix secretion promoting fibrosis development. In the mesenteric and cerebral arteries, calcineurin mediates a phenotypic switch of VSMCs leading to altered cell function. Gaining deeper insights into the underlying mechanisms of calcineurin signaling will help researchers to understand developmental and pathogenetical aspects of the vasculature. In this review, we provide an overview of the physiological function and pathophysiology of calcineurin in the vascular system with a focus on vascular smooth muscle cells in different organs. Overall, there are indications that under certain pathological settings reduced calcineurin activity seems to be beneficial for cardiovascular health.
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Affiliation(s)
| | | | - Claudia Grossmann
- Julius Bernstein Institute of Physiology, Martin Luther University Halle-Wittenberg, 06112 Halle (Saale), Germany
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Ezzitouny M, Roselló-Lletí E, Portolés M, Sánchez-Lázaro I, Arnau-Vives MÁ, Tarazón E, Gil-Cayuela C, Lozano-Edo S, López-Vilella R, Almenar-Bonet L, Martínez-Dolz L. Value of SERCA2a as a Biomarker for the Identification of Patients with Heart Failure Requiring Circulatory Support. J Pers Med 2021; 11:jpm11111122. [PMID: 34834474 PMCID: PMC8622248 DOI: 10.3390/jpm11111122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 10/20/2021] [Accepted: 10/29/2021] [Indexed: 01/03/2023] Open
Abstract
Background: Heart failure (HF) alters the nucleo-cytoplasmic transport of cardiomyocytes and reduces SERCA2a levels, essential for intracellular calcium homeostasis. We consider in this study whether the molecules involved in these processes can differentiate those patients with advanced HF and the need for mechanical circulatory support (MCS) as a bridge to recovery or urgent heart transplantation from those who are clinically stable and who are transplanted in an elective code. Material and method: Blood samples from 29 patients with advanced HF were analysed by ELISA, and the plasma levels of Importin5, Nucleoporin153 kDa, RanGTPase-Activating Protein 1 and sarcoplasmic reticulum Ca2+ ATPase were compared between patients requiring MCS and those patients without a MCS need prior to heart transplantation. Results: SERCA2a showed significantly lower levels in patients who had MCS compared to those who did not require it (0.501 ± 0.530 ng/mL vs. 1.123 ± 0.661 ng/mL; p = 0.01). A SERCA2a cut-off point of 0.84 ng/mL (AUC 0.812 ± 0.085, 95% CI: 0.646–0.979; p = 0.004) provided a 92% sensitivity, 62% specificity, 91% negative predictive value and 67% positive predictive value. Conclusions: In this cohort, patients with advanced HF and a need for MCS have shown significantly lower levels of SERCA2a as compared to stable patients without a need for MCS prior to heart transplantation. This is a small study with preliminary findings, and larger-powered dedicated studies are required to confirm and validate these results.
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Affiliation(s)
- Meryem Ezzitouny
- Heart Failure and Transplant Unit, Cardiology Department, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.S.-L.); (M.Á.A.-V.); (S.L.-E.); (R.L.-V.); (L.A.-B.); (L.M.-D.)
- Correspondence: ; Fax: +34-96-124-58-49
| | - Esther Roselló-Lletí
- Myocardial Dysfunction and Heart Transplant Group, Health Research Institute La Fe, 46026 Valencia, Spain; (E.R.-L.); (M.P.); (E.T.); (C.G.-C.)
- Center for Biomedical Research Network on Cardiovascular Diseases (Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares: CIBERCV), 28029 Madrid, Spain
| | - Manuel Portolés
- Myocardial Dysfunction and Heart Transplant Group, Health Research Institute La Fe, 46026 Valencia, Spain; (E.R.-L.); (M.P.); (E.T.); (C.G.-C.)
- Center for Biomedical Research Network on Cardiovascular Diseases (Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares: CIBERCV), 28029 Madrid, Spain
| | - Ignacio Sánchez-Lázaro
- Heart Failure and Transplant Unit, Cardiology Department, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.S.-L.); (M.Á.A.-V.); (S.L.-E.); (R.L.-V.); (L.A.-B.); (L.M.-D.)
- Myocardial Dysfunction and Heart Transplant Group, Health Research Institute La Fe, 46026 Valencia, Spain; (E.R.-L.); (M.P.); (E.T.); (C.G.-C.)
- Center for Biomedical Research Network on Cardiovascular Diseases (Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares: CIBERCV), 28029 Madrid, Spain
| | - Miguel Ángel Arnau-Vives
- Heart Failure and Transplant Unit, Cardiology Department, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.S.-L.); (M.Á.A.-V.); (S.L.-E.); (R.L.-V.); (L.A.-B.); (L.M.-D.)
- Myocardial Dysfunction and Heart Transplant Group, Health Research Institute La Fe, 46026 Valencia, Spain; (E.R.-L.); (M.P.); (E.T.); (C.G.-C.)
- Center for Biomedical Research Network on Cardiovascular Diseases (Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares: CIBERCV), 28029 Madrid, Spain
| | - Estefanía Tarazón
- Myocardial Dysfunction and Heart Transplant Group, Health Research Institute La Fe, 46026 Valencia, Spain; (E.R.-L.); (M.P.); (E.T.); (C.G.-C.)
- Center for Biomedical Research Network on Cardiovascular Diseases (Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares: CIBERCV), 28029 Madrid, Spain
| | - Carolina Gil-Cayuela
- Myocardial Dysfunction and Heart Transplant Group, Health Research Institute La Fe, 46026 Valencia, Spain; (E.R.-L.); (M.P.); (E.T.); (C.G.-C.)
| | - Silvia Lozano-Edo
- Heart Failure and Transplant Unit, Cardiology Department, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.S.-L.); (M.Á.A.-V.); (S.L.-E.); (R.L.-V.); (L.A.-B.); (L.M.-D.)
| | - Raquel López-Vilella
- Heart Failure and Transplant Unit, Cardiology Department, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.S.-L.); (M.Á.A.-V.); (S.L.-E.); (R.L.-V.); (L.A.-B.); (L.M.-D.)
| | - Luis Almenar-Bonet
- Heart Failure and Transplant Unit, Cardiology Department, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.S.-L.); (M.Á.A.-V.); (S.L.-E.); (R.L.-V.); (L.A.-B.); (L.M.-D.)
- Myocardial Dysfunction and Heart Transplant Group, Health Research Institute La Fe, 46026 Valencia, Spain; (E.R.-L.); (M.P.); (E.T.); (C.G.-C.)
- Center for Biomedical Research Network on Cardiovascular Diseases (Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares: CIBERCV), 28029 Madrid, Spain
| | - Luis Martínez-Dolz
- Heart Failure and Transplant Unit, Cardiology Department, La Fe University and Polytechnic Hospital, 46026 Valencia, Spain; (I.S.-L.); (M.Á.A.-V.); (S.L.-E.); (R.L.-V.); (L.A.-B.); (L.M.-D.)
- Myocardial Dysfunction and Heart Transplant Group, Health Research Institute La Fe, 46026 Valencia, Spain; (E.R.-L.); (M.P.); (E.T.); (C.G.-C.)
- Center for Biomedical Research Network on Cardiovascular Diseases (Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares: CIBERCV), 28029 Madrid, Spain
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Williams RB, Johnson CN. A Review of Calcineurin Biophysics with Implications for Cardiac Physiology. Int J Mol Sci 2021; 22:ijms222111565. [PMID: 34768996 PMCID: PMC8583826 DOI: 10.3390/ijms222111565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 10/20/2021] [Accepted: 10/21/2021] [Indexed: 12/20/2022] Open
Abstract
Calcineurin, also known as protein phosphatase 2B, is a heterodimeric serine threonine phosphatase involved in numerous signaling pathways. During the past 50 years, calcineurin has been the subject of extensive investigation. Many of its cellular and physiological functions have been described, and the underlying biophysical mechanisms are the subject of active investigation. With the abundance of techniques and experimental designs utilized to study calcineurin and its numerous substrates, it is difficult to reconcile the available information. There have been a plethora of reports describing the role of calcineurin in cardiac disease. However, a physiological role of calcineurin in healthy cardiomyocyte function requires clarification. Here, we review the seminal biophysical and structural details that are responsible for the molecular function and inhibition of calcineurin. We then focus on literature describing the roles of calcineurin in cardiomyocyte physiology and disease.
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Affiliation(s)
- Ryan B. Williams
- Department of Chemistry, Mississippi State University, Starkville, MS 39759, USA;
| | - Christopher N. Johnson
- Department of Chemistry, Mississippi State University, Starkville, MS 39759, USA;
- Center for Arrhythmia Research and Therapeutics, Vanderbilt University Medical Center, Nashville, TN 37232, USA
- Correspondence:
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Nuclear factor of activated T-cells (NFAT) regulation of IL-1β-induced retinal vascular inflammation. Biochim Biophys Acta Mol Basis Dis 2021; 1867:166238. [PMID: 34343639 DOI: 10.1016/j.bbadis.2021.166238] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 07/27/2021] [Accepted: 07/29/2021] [Indexed: 12/20/2022]
Abstract
Chronic low-grade retinal inflammation is an essential contributor to the pathogenesis of diabetic retinopathy (DR). It is characterized by increased retinal cell expression and secretion of a variety of inflammatory cytokines; among these, IL-1β has the reputation of being a major driver of cytokine-induced inflammation. IL-1β and other cytokines drive inflammatory changes that cause damage to retinal cells, leading to the hallmark vascular lesions of DR; these include increased leukocyte adherence, vascular permeability, and capillary cell death. Nuclear factor of activated T-cells (NFAT) is a transcriptional regulator of inflammatory cytokines and adhesion molecules and is expressed in retinal cells. Consequently, it may influence multiple pathogenic steps early in DR. We investigated the NFAT-dependency of IL-1β-induced inflammation in human Müller cells (hMC) and human retinal microvascular endothelial cells (hRMEC). Our results show that an NFAT inhibitor, Inhibitor of NFAT-Calcineurin Association-6 (INCA-6), decreased IL-1β-induced expression of IL-1β and TNFα in hMC, while having no effect on VEGF, CCL2, or CCL5 expression. We also demonstrate that INCA-6 attenuated IL-1β-induced increases of IL-1β, TNFα, IL-6, CCL2, and CCL5 (inflammatory cytokines and chemokines), and ICAM-1 and E-selectin (leukocyte adhesion molecules) expression in hRMEC. INCA-6 similarly inhibited IL-1β-induced increases in leukocyte adhesion in both hRMEC monolayers in vitro and an acute model of retinal inflammation in vivo. Finally, INCA-6 rescued IL-1β-induced permeability in both hRMEC monolayers in vitro and an acute model of retinal inflammation in vivo. Taken together, these data demonstrate the potential of NFAT inhibition to mitigate retinal inflammation secondary to diabetes.
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Li X, Li J, Martinez EC, Froese A, Passariello CL, Henshaw K, Rusconi F, Li Y, Yu Q, Thakur H, Nikolaev VO, Kapiloff MS. Calcineurin Aβ-Specific Anchoring Confers Isoform-Specific Compartmentation and Function in Pathological Cardiac Myocyte Hypertrophy. Circulation 2020; 142:948-962. [PMID: 32611257 DOI: 10.1161/circulationaha.119.044893] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The Ca2+/calmodulin-dependent phosphatase calcineurin is a key regulator of cardiac myocyte hypertrophy in disease. An unexplained paradox is how the β isoform of the calcineurin catalytic A-subunit (CaNAβ) is required for induction of pathological myocyte hypertrophy, despite calcineurin Aα expression in the same cells. It is unclear how the pleiotropic second messenger Ca2+ drives excitation-contraction coupling while not stimulating hypertrophy by calcineurin in the normal heart. Elucidation of the mechanisms conferring this selectivity in calcineurin signaling should reveal new strategies for targeting the phosphatase in disease. METHODS Primary adult rat ventricular myocytes were studied for morphology and intracellular signaling. New Förster resonance energy transfer reporters were used to assay Ca2+ and calcineurin activity in living cells. Conditional gene deletion and adeno-associated virus-mediated gene delivery in the mouse were used to study calcineurin signaling after transverse aortic constriction in vivo. RESULTS CIP4 (Cdc42-interacting protein 4)/TRIP10 (thyroid hormone receptor interactor 10) was identified as a new polyproline domain-dependent scaffold for CaNAβ2 by yeast 2-hybrid screen. Cardiac myocyte-specific CIP4 gene deletion in mice attenuated pressure overload-induced pathological cardiac remodeling and heart failure. Blockade of CaNAβ polyproline-dependent anchoring using a competing peptide inhibited concentric hypertrophy in cultured myocytes; disruption of anchoring in vivo using an adeno-associated virus gene therapy vector inhibited cardiac hypertrophy and improved systolic function after pressure overload. Live cell Förster resonance energy transfer biosensor imaging of cultured myocytes revealed that Ca2+ levels and calcineurin activity associated with the CIP4 compartment were increased by neurohormonal stimulation, but minimally by pacing. Conversely, Ca2+ levels and calcineurin activity detected by nonlocalized Förster resonance energy transfer sensors were induced by pacing and minimally by neurohormonal stimulation, providing functional evidence for differential intracellular compartmentation of Ca2+ and calcineurin signal transduction. CONCLUSIONS These results support a structural model for Ca2+ and CaNAβ compartmentation in cells based on an isoform-specific mechanism for calcineurin protein-protein interaction and localization. This mechanism provides an explanation for the specific role of CaNAβ in hypertrophy and its selective activation under conditions of pathologic stress. Disruption of CaNAβ polyproline-dependent anchoring constitutes a rational strategy for therapeutic targeting of CaNAβ-specific signaling responsible for pathological cardiac remodeling in cardiovascular disease deserving of further preclinical investigation.
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Affiliation(s)
- Xiaofeng Li
- Interdisciplinary Stem Cell Institute, Department of Pediatrics, Leonard M. Miller School of Medicine, University of Miami, FL (X.L., J.L., E.C.M., C.L.P., K.H., F.R., H.T., M.S.K.)
| | - Jinliang Li
- Interdisciplinary Stem Cell Institute, Department of Pediatrics, Leonard M. Miller School of Medicine, University of Miami, FL (X.L., J.L., E.C.M., C.L.P., K.H., F.R., H.T., M.S.K.).,Departments of Ophthalmology and Medicine, Stanford Cardiovascular Institute, Stanford University, Palo Alto, CA (J.L., Y.L., Q.Y., H.T., M.S.K.)
| | - Eliana C Martinez
- Interdisciplinary Stem Cell Institute, Department of Pediatrics, Leonard M. Miller School of Medicine, University of Miami, FL (X.L., J.L., E.C.M., C.L.P., K.H., F.R., H.T., M.S.K.)
| | - Alexander Froese
- Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (A.F., V.O.N.)
| | - Catherine L Passariello
- Interdisciplinary Stem Cell Institute, Department of Pediatrics, Leonard M. Miller School of Medicine, University of Miami, FL (X.L., J.L., E.C.M., C.L.P., K.H., F.R., H.T., M.S.K.)
| | - Kathryn Henshaw
- Interdisciplinary Stem Cell Institute, Department of Pediatrics, Leonard M. Miller School of Medicine, University of Miami, FL (X.L., J.L., E.C.M., C.L.P., K.H., F.R., H.T., M.S.K.)
| | - Francesca Rusconi
- Interdisciplinary Stem Cell Institute, Department of Pediatrics, Leonard M. Miller School of Medicine, University of Miami, FL (X.L., J.L., E.C.M., C.L.P., K.H., F.R., H.T., M.S.K.)
| | - Yang Li
- Departments of Ophthalmology and Medicine, Stanford Cardiovascular Institute, Stanford University, Palo Alto, CA (J.L., Y.L., Q.Y., H.T., M.S.K.)
| | - Qian Yu
- Departments of Ophthalmology and Medicine, Stanford Cardiovascular Institute, Stanford University, Palo Alto, CA (J.L., Y.L., Q.Y., H.T., M.S.K.)
| | - Hrishikesh Thakur
- Interdisciplinary Stem Cell Institute, Department of Pediatrics, Leonard M. Miller School of Medicine, University of Miami, FL (X.L., J.L., E.C.M., C.L.P., K.H., F.R., H.T., M.S.K.).,Departments of Ophthalmology and Medicine, Stanford Cardiovascular Institute, Stanford University, Palo Alto, CA (J.L., Y.L., Q.Y., H.T., M.S.K.)
| | - Viacheslav O Nikolaev
- Institute of Experimental Cardiovascular Research, University Medical Center Hamburg-Eppendorf, Hamburg, Germany (A.F., V.O.N.)
| | - Michael S Kapiloff
- Interdisciplinary Stem Cell Institute, Department of Pediatrics, Leonard M. Miller School of Medicine, University of Miami, FL (X.L., J.L., E.C.M., C.L.P., K.H., F.R., H.T., M.S.K.).,Departments of Ophthalmology and Medicine, Stanford Cardiovascular Institute, Stanford University, Palo Alto, CA (J.L., Y.L., Q.Y., H.T., M.S.K.)
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Wang KCW, Tosh DN, Zhang S, McMillen IC, Duffield JA, Brooks DA, Morrison JL. IGF-2R-Gαq signaling and cardiac hypertrophy in the low-birth-weight lamb. Am J Physiol Regul Integr Comp Physiol 2015; 308:R627-35. [PMID: 25632020 DOI: 10.1152/ajpregu.00346.2014] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 12/29/2014] [Indexed: 01/19/2023]
Abstract
The cardiac insulin-like growth factor 2 receptor (IGF-2R) can induce cardiomyocyte hypertrophy in a heterotrimeric G protein receptor-coupled manner involving αq (Gαq) or αs (Gαs). We have previously shown increased left ventricular weight and cardiac IGF-2 and IGF-2R gene expression in low-birth-weight (LBW) compared with average-birth-weight (ABW) lambs. Here, we have investigated the cardiac expression of IGF-2 gene variants, the degree of histone acetylation, and the abundance of proteins in the IGF-2R downstream signaling pathway in ABW and LBW lambs. Samples from the left ventricle of ABW and LBW lambs were collected at 21 days of age. There was increased phospho-CaMKII protein with decreased HDAC 4 abundance in the LBW compared with ABW lambs. There was increased GATA 4 and decreased phospho-troponin I abundance in LBW compared with ABW lambs, which are markers of pathological cardiac hypertrophy and impaired or reduced contractility, respectively. There was increased histone acetylation of H3K9 at IGF-2R promoter and IGF-2R intron 2 differentially methylated region in the LBW lamb. In conclusion, histone acetylation of IGF-2R may lead to increased IGF-2R mRNA expression and subsequently mediate Gαq signaling early in life via CaMKII, resulting in an increased risk of left ventricular hypertrophy and cardiovascular disease in adult life.
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Affiliation(s)
- Kimberley C W Wang
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, Australia; and
| | - Darran N Tosh
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, Australia; and
| | - Song Zhang
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, Australia; and
| | - I Caroline McMillen
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, Australia; and
| | - Jaime A Duffield
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, Australia; and
| | - Doug A Brooks
- Mechanisms in Cell Biology and Disease Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, Australia
| | - Janna L Morrison
- Early Origins of Adult Health Research Group, School of Pharmacy and Medical Sciences, Sansom Institute for Health Research, University of South Australia, Adelaide, South Australia, Australia; and
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Prévilon M, Pezet M, Vinet L, Mercadier JJ, Rouet-Benzineb P. Gender-specific potential inhibitory role of Ca2+/calmodulin dependent protein kinase phosphatase (CaMKP) in pressure-overloaded mouse heart. PLoS One 2014; 9:e90822. [PMID: 24608696 PMCID: PMC3946626 DOI: 10.1371/journal.pone.0090822] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2013] [Accepted: 02/04/2014] [Indexed: 01/08/2023] Open
Abstract
Background Ca2+/calmodulin-dependent protein kinase phosphatase (CaMKP) has been proposed as a potent regulator of multifunctional Ca2+/calmodulin-dependent protein kinases (i.e., CaMKII). The CaMKII-dependent activation of myocyte enhancer factor 2 (MEF2) disrupts interactions between MEF2-histone deacetylases (HDACs), thereby de-repressing downstream gene transcription. Whether CaMKP modulates the CaMKII- MEF2 pathway in the heart is unknown. Here, we investigated the molecular and functional consequences of left ventricular (LV) pressure overload in the mouse of both genders, and in particular we evaluated the expression levels and localization of CaMKP and its association with CaMKII-MEF2 signaling. Methodology and Principal Findings Five week-old B6D1/F1 mice of both genders underwent a sham-operation or thoracic aortic constriction (TAC). Thirty days later, TAC was associated with pathological LV hypertrophy characterized by systolic and diastolic dysfunction. Gene expression was assessed by real-time PCR. Fetal gene program re-expression comprised increased RNA levels of brain natriuretic peptide and alpha-skeletal actin. Mouse hearts of both genders expressed both CaMKP transcript and protein. Activation of signalling pathways was studied by Western blot in LV lysates or subcellular fractions (nuclear and cytoplasmic). TAC was associated with increased CaMKP expression in male LVs whereas it tended to be decreased in females. The DNA binding activity of MEF2 was determined by spectrophotometry. CaMKP compartmentalization differed according to gender. In male TAC mice, nuclear CaMKP was associated with inactive CaMKII resulting in less MEF2 activation. In female TAC mice, active CaMKII (phospho-CaMKII) detected in the nuclear fraction, was associated with a strong MEF2 transcription factor-binding activity. Conclusions/Significance Gender-specific CaMKP compartmentalization is associated with CaMKII-mediated MEF2 activation in pressure-overloaded hearts. Therefore, CaMKP could be considered as an important novel cellular target for the development of new therapeutic strategies for heart diseases.
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Affiliation(s)
- Miresta Prévilon
- Inserm, UMRS-698, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
| | - Mylène Pezet
- CEFI-Institut Claude Bernard-IFR02, Paris, France
- Inserm, U823, Plateforme de Microscopie Photonique – Cytométrie en Flux, Institut Albert Bonniot Site Santé BP170–38042, Grenoble, France
| | - Laurent Vinet
- Inserm, UMRS-698, Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- Department of Cell Physiology and Metabolism, University of Geneva, Medical School, Genève, Switzerland
| | - Jean-Jacques Mercadier
- Université Paris Diderot, Sorbonne Paris Cité, Paris, France
- Inserm, UMRS-769, Université Paris-Sud, IFR141, LabEx LERMIT, Châtenay-Malabry, France
- AP-HP, Hôpital Bichat, Paris, France
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Shareef MA, Anwer LA, Poizat C. Cardiac SERCA2A/B: Therapeutic targets for heart failure. Eur J Pharmacol 2014; 724:1-8. [DOI: 10.1016/j.ejphar.2013.12.018] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2013] [Revised: 12/10/2013] [Accepted: 12/11/2013] [Indexed: 02/05/2023]
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Correa F, Buelna-Chontal M, Hernández-Reséndiz S, García-Niño WR, Roldán FJ, Soto V, Silva-Palacios A, Amador A, Pedraza-Chaverrí J, Tapia E, Zazueta C. Curcumin maintains cardiac and mitochondrial function in chronic kidney disease. Free Radic Biol Med 2013; 61:119-29. [PMID: 23548636 DOI: 10.1016/j.freeradbiomed.2013.03.017] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Revised: 03/21/2013] [Accepted: 03/22/2013] [Indexed: 01/14/2023]
Abstract
Curcumin, a natural pigment with antioxidant activity obtained from turmeric and largely used in traditional medicine, is currently being studied in the chemoprevention of several diseases for its pleiotropic effects and nontoxicity. In chronic renal failure, the pathogenic mechanisms leading to cardiovascular disorders have been associated with increased oxidative stress, a process inevitably linked with mitochondrial dysfunction. Thus, in this study we aimed at investigating if curcumin pretreatment exerts cardioprotective effects in a rat model of subtotal nephrectomy (5/6Nx) and its impact on mitochondrial homeostasis. Curcumin was orally administered (120mg/kg) to Wistar rats 7 days before nephrectomy and after surgery for 60 days (5/6Nx+curc). Renal dysfunction was detected a few days after nephrectomy, whereas changes in cardiac function were observed until the end of the protocol. Our results indicate that curcumin treatment protects against pathological remodeling, diminishes ischemic events, and preserves cardiac function in uremic rats. Cardioprotection was related to diminished reactive oxygen species production, decreased oxidative stress markers, increased antioxidant response, and diminution of active metalloproteinase-2. We also observed that curcumin's cardioprotective effects were related to maintaining mitochondrial function. Aconitase activity was significantly higher in the 5/6Nx + curc (408.5±68.7nmol/min/mg protein) than in the 5/6Nx group (104.4±52.3nmol/min/mg protein, P<0.05), and mitochondria from curcumin-treated rats showed enhanced oxidative phosphorylation capacities with both NADH-linked substrates and succinate plus rotenone (3.6±1 vs 1.1±0.9 and 3.1±0.7 vs 1.2±0.8, respectively, P<0.05). The mechanisms involved in cardioprotection included both direct antioxidant effects and indirect strategies that could be related to protein kinase C-activated downstream signaling.
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Affiliation(s)
- Francisco Correa
- Department of Cardiovascular Biomedicine, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080 DF, Mexico; Department of Biochemistry, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080 DF, Mexico
| | - Mabel Buelna-Chontal
- Department of Cardiovascular Biomedicine, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080 DF, Mexico; Department of Biochemistry, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080 DF, Mexico
| | - Sauri Hernández-Reséndiz
- Department of Biochemistry, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080 DF, Mexico
| | - Wylly R García-Niño
- Renal Pathophysiology Laboratory, Department of Nephrology, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080 DF, Mexico
| | - Francisco J Roldán
- Department of Echocardiography, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080 DF, Mexico
| | - Virgilia Soto
- Department of Pathology, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080, DF, Mexico
| | - Alejandro Silva-Palacios
- Department of Cardiovascular Biomedicine, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080 DF, Mexico
| | - Alejandra Amador
- Department of Cardiovascular Biomedicine, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080 DF, Mexico
| | | | - Edilia Tapia
- Renal Pathophysiology Laboratory, Department of Nephrology, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080 DF, Mexico
| | - Cecilia Zazueta
- Department of Cardiovascular Biomedicine, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080 DF, Mexico; Department of Biochemistry, National Institute of Cardiology Ignacio Chavez, Mexico City, 14080 DF, Mexico.
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McGahon MK, Yarham JM, Daly A, Guduric-Fuchs J, Ferguson LJ, Simpson DA, Collins A. Distinctive profile of IsomiR expression and novel microRNAs in rat heart left ventricle. PLoS One 2013; 8:e65809. [PMID: 23799049 PMCID: PMC3683050 DOI: 10.1371/journal.pone.0065809] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 05/03/2013] [Indexed: 12/20/2022] Open
Abstract
MicroRNAs (miRNAs) are single-stranded non-coding RNAs that negatively regulate target gene expression through mRNA cleavage or translational repression. There is mounting evidence that they play critical roles in heart disease. The expression of known miRNAs in the heart has been studied at length by microarray and quantitative PCR but it is becoming evident that microRNA isoforms (isomiRs) are potentially physiologically important. It is well known that left ventricular (patho)physiology is influenced by transmural heterogeneity of cardiomyocyte phenotype, and this likely reflects underlying heterogeneity of gene expression. Given the significant role of miRNAs in regulating gene expression, knowledge of how the miRNA profile varies across the ventricular wall will be crucial to better understand the mechanisms governing transmural physiological heterogeneity. To determinine miRNA/isomiR expression profiles in the rat heart we investigated tissue from different locations across the left ventricular wall using deep sequencing. We detected significant quantities of 145 known rat miRNAs and 68 potential novel orthologs of known miRNAs, in mature, mature* and isomiR formation. Many isomiRs were detected at a higher frequency than their canonical sequence in miRBase and have different predicted targets. The most common miR-133a isomiR was more effective at targeting a construct containing a sequence from the gelsolin gene than was canonical miR-133a, as determined by dual-fluorescence assay. We identified a novel rat miR-1 homolog from a second miR-1 gene; and a novel rat miRNA similar to miR-676. We also cloned and sequenced the rat miR-486 gene which is not in miRBase (v18). Signalling pathways predicted to be targeted by the most highly detected miRNAs include Ubiquitin-mediated Proteolysis, Mitogen-Activated Protein Kinase, Regulation of Actin Cytoskeleton, Wnt signalling, Calcium Signalling, Gap junctions and Arrhythmogenic Right Ventricular Cardiomyopathy. Most miRNAs are not expressed in a gradient across the ventricular wall, with exceptions including miR-10b, miR-21, miR-99b and miR-486.
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Affiliation(s)
- Mary K. McGahon
- Centre for Vision and Vascular Science, Queen’s University Belfast, Belfast, County Antrim, United Kingdom
| | - Janet M. Yarham
- Centre for Vision and Vascular Science, Queen’s University Belfast, Belfast, County Antrim, United Kingdom
| | - Aideen Daly
- Centre for Vision and Vascular Science, Queen’s University Belfast, Belfast, County Antrim, United Kingdom
| | - Jasenka Guduric-Fuchs
- Centre for Vision and Vascular Science, Queen’s University Belfast, Belfast, County Antrim, United Kingdom
| | - Lyndsey J. Ferguson
- Centre for Vision and Vascular Science, Queen’s University Belfast, Belfast, County Antrim, United Kingdom
| | - David A. Simpson
- Centre for Vision and Vascular Science, Queen’s University Belfast, Belfast, County Antrim, United Kingdom
| | - Anthony Collins
- Centre for Vision and Vascular Science, Queen’s University Belfast, Belfast, County Antrim, United Kingdom
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12
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Zarain-Herzberg A, Estrada-Avilés R, Fragoso-Medina J. Regulation of sarco(endo)plasmic reticulum Ca2+-ATPase and calsequestrin gene expression in the heart. Can J Physiol Pharmacol 2012; 90:1017-28. [DOI: 10.1139/y2012-057] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The precise control of Ca2+levels during the contraction–relaxation cycle in cardiac myocytes is extremely important for normal beat-to-beat contractile activity. The sarcoplasmic reticulum (SR) plays a key role controlling calcium concentration in the cytosol. The SR Ca2+-ATPase (SERCA2) transports Ca2+inside the SR lumen during relaxation of the cardiac myocyte. Calsequestrin (Casq2) is the main protein in the SR lumen, functioning as a Ca2+buffer and participating in Ca2+release by interacting with the ryanodine receptor 2 (RyR2) Ca2+-release channel. Alterations in normal Ca2+handling significantly contribute to the contractile dysfunction observed in cardiac hypertrophy and in heart failure. Transcriptional regulation of the SERCA2 gene has been extensively studied and some of the mechanisms regulating its expression have been elucidated. Overexpression of Sp1 factor in cardiac hypertrophy downregulates SERCA2 gene expression and increased levels of thyroid hormone up-regulates its transcription. Other hormones such norepinephrine, angiotensin II, endothelin-1, parathyroid hormone, prostaglandin-F2α, as well the cytokines tumor necrosis factor-α and interleukin-6 also downregulate SERCA2 expression. Calcium acting through the calcineurin–NFAT (nuclear factor of activated T cells) pathway has been suggested to regulate SERCA2 and CASQ2 gene expression. This review focuses on the current knowledge regarding transcriptional regulation of SERCA2 and CASQ2 genes in the normal and pathologic heart.
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Affiliation(s)
- Angel Zarain-Herzberg
- Department of Biochemistry, School of Medicine, National Autonomous University of México, D.F. 04510, Mexico
| | - Rafael Estrada-Avilés
- Department of Biochemistry, School of Medicine, National Autonomous University of México, D.F. 04510, Mexico
| | - Jorge Fragoso-Medina
- Department of Biochemistry, School of Medicine, National Autonomous University of México, D.F. 04510, Mexico
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Naranjo JR, Mellström B. Ca2+-dependent transcriptional control of Ca2+ homeostasis. J Biol Chem 2012; 287:31674-80. [PMID: 22822058 DOI: 10.1074/jbc.r112.384982] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Intracellular free Ca(2+) ions regulate many cellular functions, and in turn, the cell devotes many genes/proteins to keep tight control of the level of intracellular free Ca(2+). Here, we review recent work on Ca(2+)-dependent mechanisms and effectors that regulate the transcription of genes encoding proteins involved in the maintenance of the homeostasis of Ca(2+) in the cell.
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Affiliation(s)
- Jose R Naranjo
- National Center of Biotechnology, Consejo Superior de Investigaciones Científicas (CSIC) and the Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28049 Madrid, Spain.
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14
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Yao X, Tan G, He C, Gao Y, Pan S, Jiang H, Zhang Y, Sun X. Hydrogen Sulfide Protects Cardiomyocytes from Myocardial Ischemia-Reperfusion Injury by Enhancing Phosphorylation of Apoptosis Repressor with Caspase Recruitment Domain. TOHOKU J EXP MED 2012; 226:275-85. [DOI: 10.1620/tjem.226.275] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Xiaoyi Yao
- Department of Geriatrics, The Second Affiliated Hospital of Harbin Medical University
| | - Gang Tan
- The Hepatosplenic Surgery Center, The First Affiliated Hospital of Harbin Medical University
| | - Changjun He
- The Hepatosplenic Surgery Center, The First Affiliated Hospital of Harbin Medical University
| | - Yan Gao
- Department of ICU, The Fourth Affiliated Hospital of Harbin Medical University
| | - Shangha Pan
- The Hepatosplenic Surgery Center, The First Affiliated Hospital of Harbin Medical University
| | - Hongchi Jiang
- The Hepatosplenic Surgery Center, The First Affiliated Hospital of Harbin Medical University
| | - Yina Zhang
- Department of Geriatrics, The Second Affiliated Hospital of Harbin Medical University
| | - Xueying Sun
- The Hepatosplenic Surgery Center, The First Affiliated Hospital of Harbin Medical University
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Abstract
Western societies are rapidly aging, and cardiovascular diseases are the leading cause of death. In fact, age and cardiovascular diseases are positively correlated, and disease syndromes affecting the heart reach epidemic proportions in the very old. Genetic variations and molecular adaptations are the primary contributors to the onset of cardiovascular disease; however, molecular links between age and heart syndromes are complex and involve much more than the passage of time. Changes in CM (cardiomyocyte) structure and function occur with age and precede anatomical and functional changes in the heart. Concomitant with or preceding some of these cellular changes are alterations in gene expression often linked to signalling cascades that may lead to a loss of CMs or reduced function. An understanding of the intrinsic molecular mechanisms underlying these cascading events has been instrumental in forming our current understanding of how CMs adapt with age. In the present review, we describe the molecular mechanisms underlying CM aging and how these changes may contribute to the development of cardiovascular diseases.
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Prasad AM, Inesi G. Regulation and rate limiting mechanisms of Ca2+ ATPase (SERCA2) expression in cardiac myocytes. Mol Cell Biochem 2011; 361:85-96. [DOI: 10.1007/s11010-011-1092-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Accepted: 09/16/2011] [Indexed: 10/17/2022]
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Zarain-Herzberg A, Fragoso-Medina J, Estrada-Avilés R. Calcium-regulated transcriptional pathways in the normal and pathologic heart. IUBMB Life 2011; 63:847-55. [DOI: 10.1002/iub.545] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2011] [Accepted: 07/02/2011] [Indexed: 12/19/2022]
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Vega AV, Ramos-Mondragón R, Calderón-Rivera A, Zarain-Herzberg A, Avila G. Calcitonin gene-related peptide restores disrupted excitation-contraction coupling in myotubes expressing central core disease mutations in RyR1. J Physiol 2011; 589:4649-69. [PMID: 21825032 DOI: 10.1113/jphysiol.2011.210765] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Central core disease (CCD) is a congenital human myopathy associated with mutations in the gene encoding the skeletal muscle ryanodine receptor (RyR1), resulting in skeletal muscle weakness and lower limb deformities. The muscle weakness can be at least partially explained by a reduced magnitude of voltage-gated Ca(2+) release (VGCR). To date, only a few studies have focused on identifying potential therapeutic agents for CCD. Therefore, in this work we investigated the potential use of the calcitonin gene related peptide (CGRP) to restore VGCR in myotubes expressing CCD RyR1 mutants. We also examined the influence of CCD mutants on Ca(2+)-dependent processes involved in myogenesis (myoblast fusion and sarcoendoplasmic reticulum Ca(2+)-ATPase isoform 2 (SERCA2) gene expression). C2C12 cells were transfected with cDNAs encoding either wild-type RyR1 or CCD mutants, and then exposed to CGRP (100 nm, 1-4 h). Expression of the I4897T mutant significantly inhibited SERCA2 gene expression and myoblast fusion, whereas the Y523S mutant exerted the opposite effect. Interestingly, both mutants clearly inhibited VGCR (50%), due to a reduction in SR Ca(2+) content. However, no major changes due to CGRP or CCD mutants were observed in I(CaL). Our data suggest that the Y523S mutant results in store depletion via decompensated SR Ca(2+) leak, while the I4897T mutant inhibits SERCA2 gene expression. Remarkably, in both cases CGRP restored VGCR, likely to have been by enhancing phospholamban (PLB) phosphorylation, SERCA activity and SR Ca(2+) content. Taken together, our data show that in the C2C12 model system, changes in excitation-contraction coupling induced by the expression of RyR1 channels bearing CCD mutations Y523S or I4897T can be reversed by CGRP.
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Zhang Y, Golowasch J. Recovery of rhythmic activity in a central pattern generator: analysis of the role of neuromodulator and activity-dependent mechanisms. J Comput Neurosci 2011; 31:685-99. [PMID: 21573963 DOI: 10.1007/s10827-011-0338-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 04/05/2011] [Accepted: 04/25/2011] [Indexed: 12/22/2022]
Abstract
The pyloric network of decapods crustaceans can undergo dramatic rhythmic activity changes. Under normal conditions the network generates low frequency rhythmic activity that depends obligatorily on the presence of neuromodulatory input from the central nervous system. When this input is removed (decentralization) the rhythmic activity ceases. In the continued absence of this input, periodic activity resumes after a few hours in the form of episodic bursting across the entire network that later turns into stable rhythmic activity that is nearly indistinguishable from control (recovery). It has been proposed that an activity-dependent modification of ionic conductance levels in the pyloric pacemaker neuron drives the process of recovery of activity. Previous modeling attempts have captured some aspects of the temporal changes observed experimentally, but key features could not be reproduced. Here we examined a model in which slow activity-dependent regulation of ionic conductances and slower neuromodulator-dependent regulation of intracellular Ca(2+) concentration reproduce all the temporal features of this recovery. Key aspects of these two regulatory mechanisms are their independence and their different kinetics. We also examined the role of variability (noise) in the activity-dependent regulation pathway and observe that it can help to reduce unrealistic constraints that were otherwise required on the neuromodulator-dependent pathway. We conclude that small variations in intracellular Ca(2+) concentration, a Ca(2+) uptake regulation mechanism that is directly targeted by neuromodulator-activated signaling pathways, and variability in the Ca(2+) concentration sensing signaling pathway can account for the observed changes in neuronal activity. Our conclusions are all amenable to experimental analysis.
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Affiliation(s)
- Yili Zhang
- Federated Department of Biological Sciences, New Jersey Institute of Technology & Rutgers University, Newark, NJ, USA
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