How to mend a broken heart Ron Summers
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1 How to mend a broken heart Ron Summers Professor of Information Engineering Loughborough University
2 Content Acknowledgements Genesis of Multiscale Engineering Concept Physiological Context Normal Heart Development Development in Congenital Heart Disease Modelling and Simulation Possible Future Scenarios Identifying the Engineering Components
3 1. Acknowledgements Dr Hiten Vyas Prof Jean-Marc Schleich (Rennes) Dr Jean-Louis Dillenseger (Rennes) Dr Lucile Houyel (Paris) Dr Fanny Bajolle (Paris) Dr Tariq Abdulla (Warwick)
4 2. Genesis of Multiscale Engineering Concept Computational Analysis Tools Databases (Distributed, Various Formats) Genomics Sequencing, Gene mining & discovery Gene Expression Microarray experiments Proteomics Protein Expression, Structure, Function, Interactions Systems Biology Regulation, Metabolic Pathways, Protein Pathways, Cellular Processes (Patho)- Physiology Organ Systems, Chemical Pathology Epidemiology Disease spread, Resistance, Disease evolution Bio-, Pharma- applications Information-driven discovery Tissue engineering Clinical Trials Summers & Vyas, 2004
5 2. Genesis of Multiscale Engineering Concept Definition of multiscale modelling multiscale modelling is the field of solving physical problems which have important features at multiple scales, particularly multiple spatial and (or) temporal scales. Wikipedia, accessed 2010
6 3. Physiological Context The Physiome Project Organ Organism Health Cell Molecule Genes Tissue Structure to Function: Experiments, Databases Problem Formulation Engineering the Solutions Quantitative System Modelling Archiving & Dissemination From Genome to Function Bassingthwaighte, 2002
7 3. Physiological Context The Physiome Project Hunter, Robbins & Noble, 2002
8 3. Physiological Context after Summers et al., 2011
9 4. Normal Heart Development Srivastava & Olson 2000
10 4. Normal Heart Development Abdulla et al., 2011
11 4. Normal Heart Development Epithelial to Mesenchymal Transition Notch Delta Abdulla et al., 2010
12 Protein Level 4. Normal Heart Development Abdulla et al., 2011
13 4. Normal Heart Development Anatomical Perspective
14 4. Normal Heart Development
15 5. Development in Congenital Heart Disease Clinical drivers for an engineering intervention: Why is it important to better understand congenital heart defects? What is the Tetralogy of Fallot from an anatomical standpoint? Which embryological processes are involved in the formation of the Tetralogy of Fallot?
16 5. Development in Congenital Heart Disease Why is it important to know more about congenital heart defects and particularly about the Tetralogy of Fallot? Congenital heart defects are the most common congenital anomaly observed in newborns about 5-10 per 1000 births 10% of childhood mortality Tetralogy of Fallot is the most common form of cyanotic congenital heart disease. It affects 9%- 15% of all infants with congenital heart disease and represents 55-70% of cyanotic congenital malformations We need to improve our knowledge about this abnormality
17 5. Development in Congenital Heart Disease Tetralogy of Fallot Pulmonary Stenosis Ventricular Septal Defect by malalignment Dextroposition of the Aorta (aortic overriding) Right ventricular hypertrophy
18 5. Development in Congenital Heart Disease Inter-ventricular septal defect Pulmonary stenosis LV RV Anatomy of the Tetralogy of Fallot
19 5. Development in Congenital Heart Disease * Conal septum deviated anteriorly * Conal septum in normal position * * Tetralogy of Fallot Normal Heart
20 5. Development in Congenital Heart Disease Which embryological processes are involved in the Tetralogy of Fallot? Scale of tissue and cells Bajolle, Zaffran & Bonnet., 2009
21 5. Development in Congenital Heart Disease Which embryological processes are involved in the Tetralogy of Fallot? Scale of genetic signalling Olson, 2006
22 6. Modelling & Simulation Wildtype Notch1 BMP2 in vitro Epithelial to Mesenchymal Transition Luna-Zurita et al., 2010
23 6. Modelling & Simulation Wildtype Abdulla et al., 2011
24 6. Modelling & Simulation Notch1 Abdulla et al., 2011
25 6. Modelling & Simulation BMP2 Abdulla et al., 2011
26 7. Possible Future Scenarios Scale Linking Summers et al., 2011
27 7. Possible Future Scenarios Anatomic Re-determination of Tetralogy of Fallot
28 8. Identifying the Engineering Components Systems Engineering Contribution Multiscale Framework Methodology Cybernetics Modelling & Simulation Cellular Potts models in vivo & in vitro samples Microscopy
29 8. Identifying the Engineering Components Direct or indirect activation of stretch activated channels Intercellular Load Cadherins Extracellular Load Intracellular Load Integrins Titin Adaptative or maladaptative growth Cytoskeletal Architecture Cytoskeletal Remodeling Functional Response - Signalling - Excitability - Impulse propagation - Contractility - Gene expression Mechanotransduction in the cardiovascular system after McCain & Parker, 2011
30 8. Identifying the Engineering Components Olympus Fluoview FV-1000 Laser Scanning Confocal Microscope
31 8. Identifying the Engineering Components Liebling et al., 2006
32 Thank You!
33 References H. Vyas and R. Summers, ''Impact of Semantic Web on Bio-Informatics'', SSCC11, Amalfi, Italy, January 2004, ISBN , [CD-ROM]. Shephard, 2006 Bassingthwaighte, 2002 P. J. Hunter, P. Robbins, and D. Noble, The IUPS human Physiome Project., European Journal of Physiology, vol. 445, no. 1, pp. 1-9, Oct R. Summers, T. Abdulla, L. Houyel, and J. M. Schleich, Progress with a Multiscale Systems Engineering Approach to Cardiac Development, Automatika, vol. 52, no. 1, pp , D. Srivastava and E. N. Olson, A genetic blueprint for cardiac development., Nature, vol. 407, no. 6801, pp , Sep T. Abdulla, R. A. Imms, J.-M Schleich, and R. Summers, Towards Multiscale Systems Modeling of Endocardial to Mesenchymal Transition, in 33rd Annual International Conference of the IEEE EMBS, 2011, pp T. Abdulla, R. A. Imms, J.-M. Schleich, and R. Summers, Systems modelling of EMT cell signalling pathways in heart valve development, in VPH 2010, F. Bajolle, S. Zaffran, and D. Bonnet, Genetics and embryological mechanisms of congenital heart diseases., Archives of Cardiovascular Diseases, vol. 102, no. 1, pp , E. N. Olson, Gene regulatory networks in the evolution and development of the heart., Science, vol. 313, no. 5795, pp , L. Luna-Zurita et al., Integration of a Notch-dependent mesenchymal gene program and Bmp2-driven cell invasiveness regulates murine cardiac valve formation, The Journal of Clinical Investigation, vol. 120, no. 10, pp , T. Abdulla, J.-M Schleich, and R. Summers, Multiscale Modelling of Notch-Mediated Lateral Induction, in Proceedings of the IEEE-EMBS International Conference on Biomedical and Health Informatics (BHI 2012), 2012, vol. 25, pp M. L. McCain and K. K. Parker, Mechanotransduction: the role of mechanical stress, myocyte shape, and cytoskeletal architecture on cardiac function., European Journal of Physiology, vol. 462, no. 1, pp , Jul M. Liebling et al., Rapid three-dimensional imaging and analysis of the beating embryonic heart reveals functional changes during development., Developmental Dynamics, vol. 235, no. 11, pp , Nov
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