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Birla RK. State of the art in Purkinje bioengineering. Tissue Cell 2024; 90:102467. [PMID: 39053130 DOI: 10.1016/j.tice.2024.102467] [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: 02/29/2024] [Revised: 06/09/2024] [Accepted: 07/08/2024] [Indexed: 07/27/2024]
Abstract
This review article will cover the recent developments in the new evolving field of Purkinje bioengineering and the development of human Purkinje networks. Recent work has progressed to the point of a methodological and systematic process to bioengineer Purkinje networks. This involves the development of 3D models based on human anatomy, followed by the development of tunable biomaterials, and strategies to reprogram stem cells to Purkinje cells. Subsequently, the reprogrammed cells and the biomaterials are coupled to bioengineer Purkinje networks, which are then tested using a small animal injury model. In this article, we discuss this process as a whole and then each step separately. We then describe potential applications of bioengineered Purkinje networks and challenges in the field that need to be overcome to move this field forward. Although the field of Purkinje bioengineering is new and in a state of infancy, it holds tremendous potential, both for therapeutic applications and to develop tools that can be used for disease modeling.
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Affiliation(s)
- Ravi K Birla
- Laboratory for Regenerative Tissue Repair, Texas Children's Hospital, Houston, TX, USA; Center for Congenital Cardiac Research, Texas Children's Hospital, Houston, TX, USA; Division of Congenital Heart Surgery, Texas Children's Hospital, Houston, TX, USA; Department of Surgery, Baylor College of Medicine, Houston, TX, USA; Division of Pediatric Surgery, Department of Surgery, Texas Children's Hospital, Houston, TX, USA.
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Ma J, Ross L, Grube C, Wang HS. Toxicity of low dose bisphenols in human iPSC-derived cardiomyocytes and human cardiac organoids - Impact on contractile function and hypertrophy. CHEMOSPHERE 2024; 353:141567. [PMID: 38417488 DOI: 10.1016/j.chemosphere.2024.141567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 02/23/2024] [Accepted: 02/25/2024] [Indexed: 03/01/2024]
Abstract
Bisphenol A (BPA) and its analogs are common environmental chemicals with various adverse health impacts, including cardiac toxicity. In this study, we examined the long term effect of low dose BPA and three common BPA analogs, bisphenol S (BPS), bisphenol F (BPF), and bisphenol AF (BPAF), in human induced pluripotent stem cell-derived cardiomyocytes (hiPSC-CMs) based models. HiPSC-CMs and human cardiac organoids were exposed to these chemicals for 4-5 or 20 days. 1 nM BPA, BPS, and BPAF, but not BPF, resulted in suppressed myocyte contractility, retarded contraction kinetics, and aberrant Ca2+ transients in hiPSC-CMs. In cardiac organoids, BPAF and BPA, but not the other bisphenols, resulted in suppressed contraction and Ca2+ transients, and aberrant contraction kinetics. The order of toxicities was BPAF > BPA>∼BPS > BPF and the toxicities of BPAF and BPA were more pronounced under longer exposure. The impact of BPAF on myocyte contraction and Ca2+ handling was mediated by reduction of sarcoplasmic reticulum Ca2+ load and inhibition of L-type Ca2+ channel involving alternation of Ca2+ handling proteins. Impaired myocyte Ca2+ handling plays a key role in cardiac pathophysiology and is a characteristic of cardiac hypertrophy; therefore we examined the potential pro-hypertrophic cardiotoxicity of these bisphenols. Four to five day exposure to BPAF did not cause hypertrophy in normal hiPSC-CMs, but significantly exacerbated the hypertrophic phenotype in myocytes with existing hypertrophy induced by endothelin-1, characterized by increased cell size and elevated expression of the hypertrophic marker proBNP. This pro-hypertrophic cardiotoxicity was also occurred in cardiac organoids, with BPAF having the strongest toxicity, followed by BPA. Our findings demonstrate that long term exposures to BPA and some of its analogs cause contractile dysfunction and abnormal Ca2+ handling, and have potential pro-hypertrophic cardiotoxicity in human heart cells/tissues, and suggest that some bisphenol chemicals may be a risk factor for cardiac hypertrophy in human hearts.
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Affiliation(s)
- Jianyong Ma
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267 USA.
| | - Leah Ross
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267 USA
| | - Christian Grube
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267 USA
| | - Hong-Sheng Wang
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH 45267 USA
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Brimmer S, Ji P, Birla AK, Keswani SG, Caldarone CA, Birla RK. Recent advances in biological pumps as a building block for bioartificial hearts. Front Bioeng Biotechnol 2023; 11:1061622. [PMID: 36741765 PMCID: PMC9895798 DOI: 10.3389/fbioe.2023.1061622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 01/04/2023] [Indexed: 01/22/2023] Open
Abstract
The field of biological pumps is a subset of cardiac tissue engineering and focused on the development of tubular grafts that are designed generate intraluminal pressure. In the simplest embodiment, biological pumps are tubular grafts with contractile cardiomyocytes on the external surface. The rationale for biological pumps is a transition from planar 3D cardiac patches to functional biological pumps, on the way to complete bioartificial hearts. Biological pumps also have applications as a standalone device, for example, to support the Fontan circulation in pediatric patients. In recent years, there has been a lot of progress in the field of biological pumps, with innovative fabrication technologies. Examples include the use of cell sheet engineering, self-organized heart muscle, bioprinting and in vivo bio chambers for vascularization. Several materials have been tested for biological pumps and included resected aortic segments from rodents, type I collagen, and fibrin hydrogel, to name a few. Multiple bioreactors have been tested to condition biological pumps and replicate the complex in vivo environment during controlled in vitro culture. The purpose of this article is to provide an overview of the field of the biological pumps, outlining progress in the field over the past several years. In particular, different fabrication methods, biomaterial platforms for tubular grafts and examples of bioreactors will be presented. In addition, we present an overview of some of the challenges that need to be overcome for the field of biological pumps to move forward.
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Affiliation(s)
- Sunita Brimmer
- Laboratory for Regenerative Tissue Repair, Texas Children’s Hospital, Houston, TX, United States,Center for Congenital Cardiac Research, Texas Children’s Hospital, Houston, TX, United States,Division of Congenital Heart Surgery, Texas Children’s Hospital, Houston, TX, United States
| | - Pengfei Ji
- Laboratory for Regenerative Tissue Repair, Texas Children’s Hospital, Houston, TX, United States,Center for Congenital Cardiac Research, Texas Children’s Hospital, Houston, TX, United States,Division of Congenital Heart Surgery, Texas Children’s Hospital, Houston, TX, United States
| | - Aditya K. Birla
- Laboratory for Regenerative Tissue Repair, Texas Children’s Hospital, Houston, TX, United States,Center for Congenital Cardiac Research, Texas Children’s Hospital, Houston, TX, United States
| | - Sundeep G. Keswani
- Laboratory for Regenerative Tissue Repair, Texas Children’s Hospital, Houston, TX, United States,Center for Congenital Cardiac Research, Texas Children’s Hospital, Houston, TX, United States,Department of Surgery, Baylor College of Medicine, Houston, TX, United States,Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital, Houston, TX, United States
| | - Christopher A. Caldarone
- Center for Congenital Cardiac Research, Texas Children’s Hospital, Houston, TX, United States,Division of Congenital Heart Surgery, Texas Children’s Hospital, Houston, TX, United States,Department of Surgery, Baylor College of Medicine, Houston, TX, United States,Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital, Houston, TX, United States
| | - Ravi K. Birla
- Laboratory for Regenerative Tissue Repair, Texas Children’s Hospital, Houston, TX, United States,Center for Congenital Cardiac Research, Texas Children’s Hospital, Houston, TX, United States,Division of Congenital Heart Surgery, Texas Children’s Hospital, Houston, TX, United States,Department of Surgery, Baylor College of Medicine, Houston, TX, United States,Division of Pediatric Surgery, Department of Surgery, Texas Children’s Hospital, Houston, TX, United States,*Correspondence: Ravi K. Birla,
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Okhovatian S, Mohammadi MH, Rafatian N, Radisic M. Engineering Models of the Heart Left Ventricle. ACS Biomater Sci Eng 2022; 8:2144-2160. [PMID: 35523206 DOI: 10.1021/acsbiomaterials.1c00636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Despite capturing the imagination of scientists for decades, the goal of creating an artificial heart for transplantation proved to be significantly more challenging than initially anticipated. Toward this goal, recent ground-breaking studies demonstrate the development of functional left ventricular (LV) models. LV models are artificially constructed 3D chambers that are capable of containing liquid within the engineered cavity and exhibit the functionality of native LV including contraction, ejection of fluid, and electrical impulse propagation. Various hydrogels and polymers have been used in manufacturing of LV models, relying on techniques such as electrospinning, bioprinting, casting, and molding. Most studies scaled down the models based on the dimensions of the human or rat ventricle. Initially, neonatal rat cardiomyocytes were the cell type of choice for construction the LV models. Yet, as the stem cell biology field advanced, recent studies focused on the use of cardiomyocytes derived from human induced pluripotent stem cells. In this review, we first describe the physiological characteristics of the human heart, to establish the parameter space for modeling. We then elaborate on current advances in the field and compare recently developed LV models among themselves and with the native human left ventricle. Fabrication methods, cell types, biomaterials, functional properties, and disease modeling capability are some of the major parameters that have distinguished these models. We also highlight some of the current challenges in this field, such as vascularization, cell composition and fidelity, and discuss potential solutions to overcome them.
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Affiliation(s)
- Sargol Okhovatian
- Institute of Biomaterials Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Mohammad Hossein Mohammadi
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada
| | - Naimeh Rafatian
- Institute of Biomaterials Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada
| | - Milica Radisic
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 3E5, Canada.,Institute of Biomaterials Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada.,Toronto General Research Institute, Toronto, Ontario M5G 2C4, Canada
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