Multi-Scale Computational Modeling of Spatial Calcium Handling From Nanodomain to Whole-Heart: Overview and Perspectives
Regulation of intracellular calcium is a critical component of cardiac electrophysiology and excitation-contraction coupling. The calcium spark, the fundamental element of the intracellular calcium transient, is initiated in specialized nanodomains which co-locate the ryanodine receptors and L-type...
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Frontiers Media S.A.
2022-03-01
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| Series: | Frontiers in Physiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fphys.2022.836622/full |
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| author | Michael A. Colman Enrique Alvarez-Lacalle Blas Echebarria Daisuke Sato Henry Sutanto Henry Sutanto Jordi Heijman |
| author_facet | Michael A. Colman Enrique Alvarez-Lacalle Blas Echebarria Daisuke Sato Henry Sutanto Henry Sutanto Jordi Heijman |
| author_sort | Michael A. Colman |
| collection | DOAJ |
| description | Regulation of intracellular calcium is a critical component of cardiac electrophysiology and excitation-contraction coupling. The calcium spark, the fundamental element of the intracellular calcium transient, is initiated in specialized nanodomains which co-locate the ryanodine receptors and L-type calcium channels. However, calcium homeostasis is ultimately regulated at the cellular scale, by the interaction of spatially separated but diffusively coupled nanodomains with other sub-cellular and surface-membrane calcium transport channels with strong non-linear interactions; and cardiac electrophysiology and arrhythmia mechanisms are ultimately tissue-scale phenomena, regulated by the interaction of a heterogeneous population of coupled myocytes. Recent advances in imaging modalities and image-analysis are enabling the super-resolution reconstruction of the structures responsible for regulating calcium homeostasis, including the internal structure of nanodomains themselves. Extrapolating functional and imaging data from the nanodomain to the whole-heart is non-trivial, yet essential for translational insight into disease mechanisms. Computational modeling has important roles to play in relating structural and functional data at the sub-cellular scale and translating data across the scales. This review covers recent methodological advances that enable image-based modeling of the single nanodomain and whole cardiomyocyte, as well as the development of multi-scale simulation approaches to integrate data from nanometer to whole-heart. Firstly, methods to overcome the computational challenges of simulating spatial calcium dynamics in the nanodomain are discussed, including image-based modeling at this scale. Then, recent whole-cell models, capable of capturing a range of different structures (such as the T-system and mitochondria) and cellular heterogeneity/variability are discussed at two different levels of discretization. Novel methods to integrate the models and data across the scales and simulate stochastic dynamics in tissue-scale models are then discussed, enabling elucidation of the mechanisms by which nanodomain remodeling underlies arrhythmia and contractile dysfunction. Perspectives on model differences and future directions are provided throughout. |
| first_indexed | 2024-12-11T09:56:54Z |
| format | Article |
| id | doaj.art-6db110e315834c2eabb55759d539e7c8 |
| institution | Directory Open Access Journal |
| issn | 1664-042X |
| language | English |
| last_indexed | 2024-12-11T09:56:54Z |
| publishDate | 2022-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physiology |
| spelling | doaj.art-6db110e315834c2eabb55759d539e7c82022-12-22T01:12:13ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2022-03-011310.3389/fphys.2022.836622836622Multi-Scale Computational Modeling of Spatial Calcium Handling From Nanodomain to Whole-Heart: Overview and PerspectivesMichael A. Colman0Enrique Alvarez-Lacalle1Blas Echebarria2Daisuke Sato3Henry Sutanto4Henry Sutanto5Jordi Heijman6School of Biomedical Sciences, University of Leeds, Leeds, United KingdomDepartament de Fisica, Universitat Politècnica de Catalunya-BarcelonaTech, Barcelona, SpainDepartament de Fisica, Universitat Politècnica de Catalunya-BarcelonaTech, Barcelona, SpainDepartment of Pharmacology, School of Medicine, University of California, Davis, Davis, CA, United StatesDepartment of Physiology and Pharmacology, State University of New York Downstate Health Sciences University, Brooklyn, NY, United StatesDepartment of Cardiology, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, NetherlandsDepartment of Cardiology, Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, NetherlandsRegulation of intracellular calcium is a critical component of cardiac electrophysiology and excitation-contraction coupling. The calcium spark, the fundamental element of the intracellular calcium transient, is initiated in specialized nanodomains which co-locate the ryanodine receptors and L-type calcium channels. However, calcium homeostasis is ultimately regulated at the cellular scale, by the interaction of spatially separated but diffusively coupled nanodomains with other sub-cellular and surface-membrane calcium transport channels with strong non-linear interactions; and cardiac electrophysiology and arrhythmia mechanisms are ultimately tissue-scale phenomena, regulated by the interaction of a heterogeneous population of coupled myocytes. Recent advances in imaging modalities and image-analysis are enabling the super-resolution reconstruction of the structures responsible for regulating calcium homeostasis, including the internal structure of nanodomains themselves. Extrapolating functional and imaging data from the nanodomain to the whole-heart is non-trivial, yet essential for translational insight into disease mechanisms. Computational modeling has important roles to play in relating structural and functional data at the sub-cellular scale and translating data across the scales. This review covers recent methodological advances that enable image-based modeling of the single nanodomain and whole cardiomyocyte, as well as the development of multi-scale simulation approaches to integrate data from nanometer to whole-heart. Firstly, methods to overcome the computational challenges of simulating spatial calcium dynamics in the nanodomain are discussed, including image-based modeling at this scale. Then, recent whole-cell models, capable of capturing a range of different structures (such as the T-system and mitochondria) and cellular heterogeneity/variability are discussed at two different levels of discretization. Novel methods to integrate the models and data across the scales and simulate stochastic dynamics in tissue-scale models are then discussed, enabling elucidation of the mechanisms by which nanodomain remodeling underlies arrhythmia and contractile dysfunction. Perspectives on model differences and future directions are provided throughout.https://www.frontiersin.org/articles/10.3389/fphys.2022.836622/fullcardiac electrophysiologycalcium handling in cardiomyocytesexcitation-contraction couplingcomputational modeling methodsmulti-scale model |
| spellingShingle | Michael A. Colman Enrique Alvarez-Lacalle Blas Echebarria Daisuke Sato Henry Sutanto Henry Sutanto Jordi Heijman Multi-Scale Computational Modeling of Spatial Calcium Handling From Nanodomain to Whole-Heart: Overview and Perspectives Frontiers in Physiology cardiac electrophysiology calcium handling in cardiomyocytes excitation-contraction coupling computational modeling methods multi-scale model |
| title | Multi-Scale Computational Modeling of Spatial Calcium Handling From Nanodomain to Whole-Heart: Overview and Perspectives |
| title_full | Multi-Scale Computational Modeling of Spatial Calcium Handling From Nanodomain to Whole-Heart: Overview and Perspectives |
| title_fullStr | Multi-Scale Computational Modeling of Spatial Calcium Handling From Nanodomain to Whole-Heart: Overview and Perspectives |
| title_full_unstemmed | Multi-Scale Computational Modeling of Spatial Calcium Handling From Nanodomain to Whole-Heart: Overview and Perspectives |
| title_short | Multi-Scale Computational Modeling of Spatial Calcium Handling From Nanodomain to Whole-Heart: Overview and Perspectives |
| title_sort | multi scale computational modeling of spatial calcium handling from nanodomain to whole heart overview and perspectives |
| topic | cardiac electrophysiology calcium handling in cardiomyocytes excitation-contraction coupling computational modeling methods multi-scale model |
| url | https://www.frontiersin.org/articles/10.3389/fphys.2022.836622/full |
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