1
|
Munch M, Bsharat O, Doyle M, Mair B, Cooze C, Kong D, Lundgren R, Rotstein B. 11C-Radiolabeling of α-amino acids via aldehyde-promoted isotopic exchange reaction. Nucl Med Biol 2022. [DOI: 10.1016/s0969-8051(22)00100-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
2
|
Wang JZ, Zelt JGE, Kaps N, Lavallee A, Renaud JM, Rotstein B, Beanlands RSB, Fallavollita JA, Canty JM, deKemp RA. Does quantification of [ 11C]meta-hydroxyephedrine and [ 13N]ammonia kinetics improve risk stratification in ischemic cardiomyopathy. J Nucl Cardiol 2022; 29:413-425. [PMID: 34341953 PMCID: PMC8807773 DOI: 10.1007/s12350-021-02732-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Accepted: 04/13/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND In ischemic cardiomyopathy patients, cardiac sympathetic nervous system dysfunction is a predictor of sudden cardiac arrest (SCA). This study compared abnormal innervation and perfusion measured by [11C]meta-hydroxyephedrine (HED) vs [13N]ammonia (NH3), conventional uptake vs parametric tracer analysis, and their SCA risk discrimination. METHODS This is a sub-study analysis of the prospective PAREPET trial, which followed ischemic cardiomyopathy patients with reduced left ventricular ejection fraction (LVEF ≤ 35%) for events of SCA. Using n = 174 paired dynamic HED and NH3 positron emission tomography (PET) scans, regional defect scores (%LV extent × severity) were calculated using HED and NH3 uptake, as well as HED distribution volume and NH3 myocardial blood flow by kinetic modeling. RESULTS During 4.1 years follow-up, there were 27 SCA events. HED defects were larger than NH3, especially in the lowest tertile of perfusion abnormality (P < .001). Parametric defects were larger than their respective tracer uptake defects (P < .001). SCA risk discrimination was not significantly improved with parametric or uptake mismatch (AUC = 0.73 or 0.70) compared to HED uptake defect scores (AUC = 0.67). CONCLUSION Quantification of HED distribution volume and NH3 myocardial blood flow produced larger defects than their respective measures of tracer uptake, but did not lead to improved SCA risk stratification vs HED uptake alone.
Collapse
Affiliation(s)
- Jean Z Wang
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
- Faculty of Medicine, University of Ottawa, 451 Smyth Rd, Ottawa, ON, K1H 8L1, Canada
| | - Jason G E Zelt
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
- Faculty of Medicine, University of Ottawa, 451 Smyth Rd, Ottawa, ON, K1H 8L1, Canada
| | - Nicole Kaps
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
| | - Aaryn Lavallee
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
| | - Jennifer M Renaud
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
- INVIA Medical Imaging Solutions, Ann Arbor, MI, USA
| | - Benjamin Rotstein
- Faculty of Medicine, University of Ottawa, 451 Smyth Rd, Ottawa, ON, K1H 8L1, Canada
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Rd, Ottawa, ON, K1H 8L1, Canada
| | - Rob S B Beanlands
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
- Faculty of Medicine, University of Ottawa, 451 Smyth Rd, Ottawa, ON, K1H 8L1, Canada
| | - James A Fallavollita
- VA Western New York Healthcare System, Buffalo, NY, USA
- Division of Cardiovascular Medicine, University at Buffalo, Buffalo, NY, USA
| | - John M Canty
- VA Western New York Healthcare System, Buffalo, NY, USA
- Division of Cardiovascular Medicine, University at Buffalo, Buffalo, NY, USA
| | - Robert A deKemp
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada.
- Faculty of Medicine, University of Ottawa, 451 Smyth Rd, Ottawa, ON, K1H 8L1, Canada.
| |
Collapse
|
3
|
Muñoz M, Eren Cimenci C, Goel K, Comtois-Bona M, Hossain M, McTiernan C, Zuñiga-Bustos M, Ross A, Truong B, Davis DR, Liang W, Rotstein B, Ruel M, Poblete H, Suuronen EJ, Alarcon EI. Nanoengineered Sprayable Therapy for Treating Myocardial Infarction. ACS Nano 2022; 16:3522-3537. [PMID: 35157804 DOI: 10.1021/acsnano.1c08890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
We report the development, as well as the in vitro and in vivo testing, of a sprayable nanotherapeutic that uses surface engineered custom-designed multiarmed peptide grafted nanogold for on-the-spot coating of an infarcted myocardial surface. When applied to mouse hearts, 1 week after infarction, the spray-on treatment resulted in an increase in cardiac function (2.4-fold), muscle contractility, and myocardial electrical conductivity. The applied nanogold remained at the treatment site 28 days postapplication with no off-target organ infiltration. Further, the infarct size in the mice that received treatment was found to be <10% of the total left ventricle area, while the number of blood vessels, prohealing macrophages, and cardiomyocytes increased to levels comparable to that of a healthy animal. Our cumulative data suggest that the therapeutic action of our spray-on nanotherapeutic is highly effective, and in practice, its application is simpler than other regenerative approaches for treating an infarcted heart.
Collapse
Affiliation(s)
- Marcelo Muñoz
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada
| | - Cagla Eren Cimenci
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Keshav Goel
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada
| | - Maxime Comtois-Bona
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada
| | - Mahir Hossain
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada
| | - Christopher McTiernan
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada
| | - Matias Zuñiga-Bustos
- Departamento de Bioinformática, Centro de Bioinformática, Simulación y Modelado (CBSM), Facultad de Ingeniería, Universidad de Talca, Campus Talca, 2 Norte 685, 3460000, Talca, Chile
| | - Alex Ross
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada
| | - Brenda Truong
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada
| | - Darryl R Davis
- University of Ottawa Heart Institute, Division of Cardiology, Department of Medicine, University of Ottawa, Ottawa, Ontario K1Y 4W7, Canada
- Cardiac Electrophysiology Lab, University of Ottawa, Ottawa, Ontario K1Y 4W7, Canada
| | - Wenbin Liang
- University of Ottawa Heart Institute, Division of Cardiology, Department of Medicine, University of Ottawa, Ottawa, Ontario K1Y 4W7, Canada
- Cardiac Electrophysiology Lab, University of Ottawa, Ottawa, Ontario K1Y 4W7, Canada
| | - Benjamin Rotstein
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
- Molecular Imaging Probes and Radiochemistry Laboratory, University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, Ontario K1Y 4W7, Canada
| | - Marc Ruel
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Horacio Poblete
- Departamento de Bioinformática, Centro de Bioinformática, Simulación y Modelado (CBSM), Facultad de Ingeniería, Universidad de Talca, Campus Talca, 2 Norte 685, 3460000, Talca, Chile
- Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Universidad de Talca, 2 Norte 685, 3460000 Talca, Chile
| | - Erik J Suuronen
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada
- Department of Cellular and Molecular Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, Canada
| | - Emilio I Alarcon
- BEaTS Research, Division of Cardiac Surgery, University of Ottawa Heart Institute, Ottawa, Ontario K1Y 4W7, Canada
- Molecular Imaging Probes and Radiochemistry Laboratory, University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, Ontario K1Y 4W7, Canada
| |
Collapse
|
4
|
Wang JZ, Zelt JGE, Kaps N, Lavallee A, Renaud JM, Rotstein B, Beanlands RSB, Fallavollita JA, Canty JM, deKemp RA. Correction to: Does quantification of [ 11C]meta-hydroxyephedrine and [ 13N]ammonia kinetics improve risk stratification in ischemic cardiomyopathy. J Nucl Cardiol 2021; 28:2419-2420. [PMID: 34448095 DOI: 10.1007/s12350-021-02779-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Jean Z Wang
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
- Faculty of Medicine, University of Ottawa, 451 Smyth Rd, Ottawa, ON, K1H 8L1, Canada
| | - Jason G E Zelt
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
- Faculty of Medicine, University of Ottawa, 451 Smyth Rd, Ottawa, ON, K1H 8L1, Canada
| | - Nicole Kaps
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
| | - Aaryn Lavallee
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
| | - Jennifer M Renaud
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
- INVIA Medical Imaging Solutions, Ann Arbor, MI, USA
| | - Benjamin Rotstein
- Faculty of Medicine, University of Ottawa, 451 Smyth Rd, Ottawa, ON, K1H 8L1, Canada
- Department of Biochemistry, Microbiology and Immunology, University of Ottawa, 451 Smyth Rd, Ottawa, ON, K1H 8L1, Canada
| | - Rob S B Beanlands
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada
- Faculty of Medicine, University of Ottawa, 451 Smyth Rd, Ottawa, ON, K1H 8L1, Canada
| | - James A Fallavollita
- VA Western New York Healthcare System, Buffalo, NY, USA
- Division of Cardiovascular Medicine, University at Buffalo, Buffalo, NY, USA
| | - John M Canty
- VA Western New York Healthcare System, Buffalo, NY, USA
- Division of Cardiovascular Medicine, University at Buffalo, Buffalo, NY, USA
| | - Robert A deKemp
- Department of Medicine (Cardiology), University of Ottawa Heart Institute, 40 Ruskin Street, Ottawa, ON, K1Y 4W7, Canada.
- Faculty of Medicine, University of Ottawa, 451 Smyth Rd, Ottawa, ON, K1H 8L1, Canada.
| |
Collapse
|
5
|
Munch M, Kong D, Qiqige Q, Cooze C, Lundgren R, Rotstein B. 11C-Carboxylation via organic photoredox-catalyzed isotopic exchange. Nucl Med Biol 2021. [DOI: 10.1016/s0969-8051(21)00310-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
6
|
Saint-Georges Z, Zayed VK, Dinelle K, Cassidy C, Soucy JP, Massarweh G, Rotstein B, Nery PB, Guimond S, deKemp R, Tuominen L. First-in-human imaging and kinetic analysis of vesicular acetylcholine transporter density in the heart using [ 18F]FEOBV PET. J Nucl Cardiol 2021; 28:50-54. [PMID: 32909238 PMCID: PMC7921026 DOI: 10.1007/s12350-020-02323-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 07/28/2020] [Indexed: 11/09/2022]
Abstract
In contrast to cardiac sympathetic activity which can be assessed with established PET tracers, there are currently no suitable radioligands to measure cardiac parasympathetic (cholinergic) activity. A radioligand able to measure cardiac cholinergic activity would be an invaluable clinical and research tool since cholinergic dysfunction has been associated with a wide array of pathologies (e.g., chronic heart failure, myocardial infarction, arrythmias). [18F]Fluoroethoxybenzovesamicol (FEOBV) is a cholinergic radiotracer that has been extensively validated in the brain. Whether FEOBV PET can be used to assess cholinergic activity in the heart is not known. Hence, this study aimed to evaluate the properties of FEOBV for cardiac PET imaging and cholinergic activity mapping. PET data were collected for 40 minutes after injection of 230 ± 50 MBq of FEOBV in four healthy participants (1 female; Age: 37 ± 10; BMI: 25 ± 2). Dynamic LV time activity curves were fitted with Logan graphical, 1-tissue compartment, and 2-tissue compartment models, yielding similar distribution volume estimates for each participant. Our initial data show that FEOBV PET has favorable tracer kinetics for quantification of cholinergic activity and is a promising new method for assessing parasympathetic function in the heart.
Collapse
Affiliation(s)
- Zacharie Saint-Georges
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada.
- The Royal's Institute of Mental Health Research, Ottawa, ON, Canada.
| | - Vanessa K Zayed
- The Royal's Institute of Mental Health Research, Ottawa, ON, Canada
| | - Katie Dinelle
- Brain Imaging Centre, The Royal's Institute of Mental Health Research, Ottawa, ON, Canada
| | - Clifford Cassidy
- The Royal's Institute of Mental Health Research, Ottawa, ON, Canada
| | - Jean-Paul Soucy
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Gassan Massarweh
- Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Benjamin Rotstein
- Department of Biochemistry, Microbiology, and Immunology, University of Ottawa, Ottawa, ON, Canada
- University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Pablo B Nery
- Division of Cardiology, University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Synthia Guimond
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada
- The Royal's Institute of Mental Health Research, Ottawa, ON, Canada
- Department of Psychoeducation and Psychology, Université du Québec en Outaouais, Gatineau, QC, Canada
- Department of Psychiatry, University of Ottawa, Ottawa, ON, Canada
| | - Robert deKemp
- University of Ottawa Heart Institute, Ottawa, ON, Canada
| | - Lauri Tuominen
- The Royal's Institute of Mental Health Research, Ottawa, ON, Canada
- Department of Psychiatry, University of Ottawa, Ottawa, ON, Canada
| |
Collapse
|
7
|
Lin HB, Naito K, Oh Y, Farber G, Kanaan G, Valaperti A, Dawood F, Zhang L, Li GH, Smyth D, Moon M, Liu Y, Liang W, Rotstein B, Philpott DJ, Kim KH, Harper ME, Liu PP. Innate Immune Nod1/RIP2 Signaling Is Essential for Cardiac Hypertrophy but Requires Mitochondrial Antiviral Signaling Protein for Signal Transductions and Energy Balance. Circulation 2020; 142:2240-2258. [PMID: 33070627 DOI: 10.1161/circulationaha.119.041213] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND Cardiac hypertrophy is a key biological response to injurious stresses such as pressure overload and, when excessive, can lead to heart failure. Innate immune activation by danger signals, through intracellular pattern recognition receptors such as nucleotide-binding oligomerization domain 1 (Nod1) and its adaptor receptor-interacting protein 2 (RIP2), might play a major role in cardiac remodeling and progression to heart failure. We hypothesize that Nod1/RIP2 are major contributors to cardiac hypertrophy, but may not be sufficient to fully express the phenotype alone. METHODS To elucidate the contribution of Nod1/RIP2 signaling to cardiac hypertrophy, we randomized Nod1-/-, RIP2-/-, or wild-type mice to transverse aortic constriction or sham operations. Cardiac hypertrophy, fibrosis, and cardiac function were examined in these mice. RESULTS Nod1 and RIP2 proteins were upregulated in the heart after transverse aortic constriction, and this was paralleled by increased expression of mitochondrial proteins, including mitochondrial antiviral signaling protein (MAVS). Nod1-/- and RIP2-/- mice subjected to transverse aortic constriction exhibited better survival, improved cardiac function, and decreased cardiac hypertrophy. Downstream signal transduction pathways that regulate inflammation and fibrosis, including NF (nuclear factor) κB and MAPK (mitogen-activated protein kinase)-GATA4/p300, were reduced in both Nod1-/- and RIP2-/- mice after transverse aortic constriction compared with wild-type mice. Coimmunoprecipitation of extracted cardiac proteins and confocal immunofluorescence microscopy showed that Nod1/RIP2 interaction was robust and that this complex also included MAVS as an essential component. Suppression of MAVS expression attenuated the complex formation, NF κB signaling, and myocyte hypertrophy. Interrogation of mitochondrial function compared in the presence or ablation of MAVS revealed that MAVS serves to suppress mitochondrial energy output and mediate fission/fusion related dynamic changes. The latter is possibly linked to mitophagy during cardiomyocytes stress, which may provide an intriguing link between innate immune activation and mitochondrial energy balance under stress or injury conditions. CONCLUSIONS We have identified that innate immune Nod1/RIP2 signaling is a major contributor to cardiac remodeling after stress. This process is critically joined by and regulated through the mitochondrial danger signal adapter MAVS. This novel complex coordinates remodeling, inflammatory response, and mitochondrial energy metabolism in stressed cardiomyocytes. Thus, Nod1/RIP2/MAVS signaling complex may represent an attractive new therapeutic approach toward heart failure.
Collapse
Affiliation(s)
- Han-Bin Lin
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Kotaro Naito
- Cardiology, Keiyu Hospital, Yokohama, Japan (K.N.).,University Health Network (K.N., A.V., F.D., M.M., Y.L., P.P.L.), University of Toronto, Canada
| | - Yena Oh
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Gedaliah Farber
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Georges Kanaan
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine (G.K., B.R., M.-E.H.), University of Ottawa, Canada
| | - Alan Valaperti
- Department of Clinical Immunology of the University Hospital Zurich, Switzerland (A.V.).,University Health Network (K.N., A.V., F.D., M.M., Y.L., P.P.L.), University of Toronto, Canada
| | - Fayez Dawood
- University Health Network (K.N., A.V., F.D., M.M., Y.L., P.P.L.), University of Toronto, Canada
| | - Liyong Zhang
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Guo Hua Li
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - David Smyth
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Mark Moon
- Department of Physiology, Institute of Medical Science (M.M., P.P.L.), University of Toronto, Canada.,University Health Network (K.N., A.V., F.D., M.M., Y.L., P.P.L.), University of Toronto, Canada
| | - Youan Liu
- University Health Network (K.N., A.V., F.D., M.M., Y.L., P.P.L.), University of Toronto, Canada
| | - Wenbin Liang
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Benjamin Rotstein
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine (G.K., B.R., M.-E.H.), University of Ottawa, Canada
| | | | - Kyoung-Han Kim
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada
| | - Mary-Ellen Harper
- Department of Biochemistry, Microbiology, and Immunology, Faculty of Medicine (G.K., B.R., M.-E.H.), University of Ottawa, Canada
| | - Peter P Liu
- University of Ottawa Heart Institute (H.-B.L., Y.O., G.F., L.Z., G.H.L., D.S., W.L., B.R., K.-H.K., P.P.L.), University of Ottawa, Canada.,Departments of Medicine and Cellular and Molecular Medicine (H.-B.L., Y.O., L.Z., G.H.L., D.S., W.L., K.-H.K., P.P.L.), University of Ottawa, Canada.,Department of Physiology, Institute of Medical Science (M.M., P.P.L.), University of Toronto, Canada.,University Health Network (K.N., A.V., F.D., M.M., Y.L., P.P.L.), University of Toronto, Canada
| |
Collapse
|
8
|
Volk T, Wang S, Rotstein B, Paululat A. Matricellular proteins in development: perspectives from the Drosophila heart. Matrix Biol 2014; 37:162-6. [PMID: 24726952 DOI: 10.1016/j.matbio.2014.03.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2013] [Revised: 03/16/2014] [Accepted: 03/25/2014] [Indexed: 12/29/2022]
Abstract
The Drosophila model represents an attractive system in which to study the functional contribution of specific genes to organ development. Within the embryo, the heart tube serves as an informative developmental paradigm to analyze functional aspects of matricellular proteins. Here, we describe two essential extracellular matricellular proteins, Multiplexin (Mp) and Lonely heart (Loh). Each of these proteins contributes to the development and morphogenesis of the heart tube by regulating the activity/localization of essential extracellular proteins. Mp, which is secreted by heart cardioblasts and is specifically distributed in the lumen of the heart tube, binds to the signaling protein Slit, and facilitates its local signaling at the heart's luminal domain. Loh is an ADAMTS-like protein, which serves as an adapter protein to Pericardin (a collagen-like protein), promoting its specific localization at the abluminal domain of the heart tube. We also introduce the Drosophila orthologues of matricellular proteins present in mammals, including Thrombospondin, and SPARC, and discuss a possible role for Teneurins (Ten-A and Ten-M) in the heart. Understanding the role of these proteins provides a novel developmental perspective into the functional contribution of matricellular proteins to organ development.
Collapse
Affiliation(s)
- T Volk
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100, Israel
| | - S Wang
- Department of Molecular Genetics, Weizmann Institute of Science, Rehovot 76100, Israel
| | - B Rotstein
- Fachbereich Biologie/Chemie, Universität Osnabrück, Barbarastr. 11, D-49069 Osnabrueck, Germany
| | - A Paululat
- Fachbereich Biologie/Chemie, Universität Osnabrück, Barbarastr. 11, D-49069 Osnabrueck, Germany
| |
Collapse
|
9
|
|