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Al-Saadi J, Waldén M, Sandell M, Sohlmér J, Grankvist R, Friberger I, Andersson A, Carlsten M, Chien K, Lundberg J, Witman N, Holmin S. Endovascular transplantation of mRNA-enhanced mesenchymal stromal cells results in superior therapeutic protein expression in swine heart. Mol Ther Methods Clin Dev 2024; 32:101225. [PMID: 38516693 PMCID: PMC10950887 DOI: 10.1016/j.omtm.2024.101225] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 02/23/2024] [Indexed: 03/23/2024]
Abstract
Heart failure has a poor prognosis and no curative treatment exists. Clinical trials are investigating gene- and cell-based therapies to improve cardiac function. The safe and efficient delivery of these therapies to solid organs is challenging. Herein, we demonstrate the feasibility of using an endovascular intramyocardial delivery approach to safely administer mRNA drug products and perform cell transplantation procedures in swine. Using a trans-vessel wall (TW) device, we delivered chemically modified mRNAs (modRNA) and mRNA-enhanced mesenchymal stromal cells expressing vascular endothelial growth factor A (VEGF-A) directly to the heart. We monitored and mapped the cellular distribution, protein expression, and safety tolerability of such an approach. The delivery of modRNA-enhanced cells via the TW device with different flow rates and cell concentrations marginally affect cell viability and protein expression in situ. Implanted cells were found within the myocardium for at least 3 days following administration, without the use of immunomodulation and minimal impact on tissue integrity. Finally, we could increase the protein expression of VEGF-A over 500-fold in the heart using a cell-mediated modRNA delivery system compared with modRNA delivered in saline solution. Ultimately, this method paves the way for future research to pioneer new treatments for cardiac disease.
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Affiliation(s)
- Jonathan Al-Saadi
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
- Department of Neuroradiology, Karolinska University Hospital, 171 64 Stockholm, Sweden
- MedTechLabs, Stockholm, Sweden
| | - Mathias Waldén
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
| | - Mikael Sandell
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
- MedTechLabs, Stockholm, Sweden
- Division of Micro and Nanosystems, KTH Royal Institute of Technology, Malvinas väg 10, 114 28 Stockholm, Sweden
| | - Jesper Sohlmér
- Department of Cell and Molecular Biology, Karolinska Institute, Solnavägen 9, 171 65 Stockholm, Sweden
| | - Rikard Grankvist
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
| | - Ida Friberger
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
| | - Agneta Andersson
- Department of Medicine, Huddinge, Center for Hematology and Regenerative Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Mattias Carlsten
- Department of Medicine, Huddinge, Center for Hematology and Regenerative Medicine, Karolinska Institutet, Stockholm, Sweden
- Center for Cell Therapy and Allogeneic Stem Cell Transplantation, Karolinska Comprehensive Cancer Center, Karolinska University Hospital, Stockholm, Sweden
| | - Kenneth Chien
- Department of Cell and Molecular Biology, Karolinska Institute, Solnavägen 9, 171 65 Stockholm, Sweden
| | - Johan Lundberg
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
- Department of Neuroradiology, Karolinska University Hospital, 171 64 Stockholm, Sweden
- MedTechLabs, Stockholm, Sweden
| | - Nevin Witman
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
| | - Staffan Holmin
- Department of Clinical Neuroscience, Karolinska Institute, Tomtebodavägen 18A, 171 65 Stockholm, Sweden
- Department of Neuroradiology, Karolinska University Hospital, 171 64 Stockholm, Sweden
- MedTechLabs, Stockholm, Sweden
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