Modelling the pathology and treatment of cardiac fibrosis in vascularised atrial and ventricular cardiac microtissues
<p><strong>Introduction:</strong> Recent advances in human cardiac 3D approaches have yielded progressively more complex and physiologically relevant culture systems. However, their application in the study of complex pathological processes, such as inflammation and fibros...
| Autors principals: | , , , , , , , , , , , |
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| Format: | Journal article |
| Idioma: | English |
| Publicat: |
Frontiers Media
2023
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| _version_ | 1826310996046643200 |
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| author | Reyat, JS di Maio, A Grygielska, B Pike, J Kemble, S Rodriguez-Romero, A Simoglou Karali, C Croft, AP Psaila, B Simões, F Rayes, J Khan, AO |
| author_facet | Reyat, JS di Maio, A Grygielska, B Pike, J Kemble, S Rodriguez-Romero, A Simoglou Karali, C Croft, AP Psaila, B Simões, F Rayes, J Khan, AO |
| author_sort | Reyat, JS |
| collection | OXFORD |
| description | <p><strong>Introduction:</strong> Recent advances in human cardiac 3D approaches have yielded progressively more complex and physiologically relevant culture systems. However, their application in the study of complex pathological processes, such as inflammation and fibrosis, and their utility as models for drug development have been thus far limited.</p>
<p><strong>Methods:</strong> In this work, we report the development of chamber-specific, vascularised human induced pluripotent stem cell-derived cardiac microtissues, which allow for the multi-parametric assessment of cardiac fibrosis.</p>
<p><strong>Results:</strong> We demonstrate the generation of a robust vascular system in the microtissues composed of endothelial cells, fibroblasts and atrial or ventricular cardiomyocytes that exhibit gene expression signatures, architectural, and electrophysiological resemblance to <em>in vivo</em>-derived anatomical cardiac tissues. Following pro-fibrotic stimulation using TGFβ, cardiac microtissues recapitulated hallmarks of cardiac fibrosis, including myofibroblast activation and collagen deposition. A study of Ca<sup>2+</sup> dynamics in fibrotic microtissues using optical mapping revealed prolonged Ca<sup>2+</sup> decay, reflecting cardiomyocyte dysfunction, which is linked to the severity of fibrosis. This phenotype could be reversed by TGFβ receptor inhibition or by using the BET bromodomain inhibitor, JQ1.</p>
<p><strong>Discussion:</strong> In conclusion, we present a novel methodology for the generation of chamber-specific cardiac microtissues that is highly scalable and allows for the multi-parametric assessment of cardiac remodelling and pharmacological screening.</p> |
| first_indexed | 2024-03-07T08:01:53Z |
| format | Journal article |
| id | oxford-uuid:4bec8b82-538c-45b7-8f4a-c29a8910e4ad |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:01:53Z |
| publishDate | 2023 |
| publisher | Frontiers Media |
| record_format | dspace |
| spelling | oxford-uuid:4bec8b82-538c-45b7-8f4a-c29a8910e4ad2023-10-02T10:05:33ZModelling the pathology and treatment of cardiac fibrosis in vascularised atrial and ventricular cardiac microtissuesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4bec8b82-538c-45b7-8f4a-c29a8910e4adEnglishSymplectic ElementsFrontiers Media2023Reyat, JSdi Maio, AGrygielska, BPike, JKemble, SRodriguez-Romero, ASimoglou Karali, CCroft, APPsaila, BSimões, FRayes, JKhan, AO<p><strong>Introduction:</strong> Recent advances in human cardiac 3D approaches have yielded progressively more complex and physiologically relevant culture systems. However, their application in the study of complex pathological processes, such as inflammation and fibrosis, and their utility as models for drug development have been thus far limited.</p> <p><strong>Methods:</strong> In this work, we report the development of chamber-specific, vascularised human induced pluripotent stem cell-derived cardiac microtissues, which allow for the multi-parametric assessment of cardiac fibrosis.</p> <p><strong>Results:</strong> We demonstrate the generation of a robust vascular system in the microtissues composed of endothelial cells, fibroblasts and atrial or ventricular cardiomyocytes that exhibit gene expression signatures, architectural, and electrophysiological resemblance to <em>in vivo</em>-derived anatomical cardiac tissues. Following pro-fibrotic stimulation using TGFβ, cardiac microtissues recapitulated hallmarks of cardiac fibrosis, including myofibroblast activation and collagen deposition. A study of Ca<sup>2+</sup> dynamics in fibrotic microtissues using optical mapping revealed prolonged Ca<sup>2+</sup> decay, reflecting cardiomyocyte dysfunction, which is linked to the severity of fibrosis. This phenotype could be reversed by TGFβ receptor inhibition or by using the BET bromodomain inhibitor, JQ1.</p> <p><strong>Discussion:</strong> In conclusion, we present a novel methodology for the generation of chamber-specific cardiac microtissues that is highly scalable and allows for the multi-parametric assessment of cardiac remodelling and pharmacological screening.</p> |
| spellingShingle | Reyat, JS di Maio, A Grygielska, B Pike, J Kemble, S Rodriguez-Romero, A Simoglou Karali, C Croft, AP Psaila, B Simões, F Rayes, J Khan, AO Modelling the pathology and treatment of cardiac fibrosis in vascularised atrial and ventricular cardiac microtissues |
| title | Modelling the pathology and treatment of cardiac fibrosis in vascularised atrial and ventricular cardiac microtissues |
| title_full | Modelling the pathology and treatment of cardiac fibrosis in vascularised atrial and ventricular cardiac microtissues |
| title_fullStr | Modelling the pathology and treatment of cardiac fibrosis in vascularised atrial and ventricular cardiac microtissues |
| title_full_unstemmed | Modelling the pathology and treatment of cardiac fibrosis in vascularised atrial and ventricular cardiac microtissues |
| title_short | Modelling the pathology and treatment of cardiac fibrosis in vascularised atrial and ventricular cardiac microtissues |
| title_sort | modelling the pathology and treatment of cardiac fibrosis in vascularised atrial and ventricular cardiac microtissues |
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