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Article

The Roles of Bone Marrow-Derived Stem Cells in Coronary Collateral Growth Induced by Repetitive Ischemia

1
Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH 44272, USA
2
Department of Anatomy and Neuroscience, Northeast Ohio Medical University, Rootstown, OH 44272, USA
*
Authors to whom correspondence should be addressed.
Cells 2023, 12(2), 242; https://doi.org/10.3390/cells12020242
Submission received: 7 December 2022 / Revised: 29 December 2022 / Accepted: 4 January 2023 / Published: 6 January 2023
(This article belongs to the Special Issue The Role of Oxidative Stress in Cardiovascular Diseases)

Abstract

Many clinical trials have attempted to use stem cells to treat ischemic heart diseases (IHD), but the benefits have been modest. Though coronary collaterals can be a “natural bypass” for IHD patients, the regulation of coronary collateral growth (CCG) and the role of endogenous stem cells in CCG are not fully understood. In this study, we used a bone marrow transplantation scheme to study the role of bone marrow stem cells (BMSCs) in a rat model of CCG. Transgenic GFP rats were used to trace BMSCs after transplantation; GFP bone marrow was harvested or sorted for bone marrow transplantation. After recovering from transplantation, the recipient rats underwent 10 days of repetitive ischemia (RI), with echocardiography before and after RI, to measure cardiac function and myocardial blood flow. At the end of RI, the rats were sacrificed for the collection of bone marrow for flow cytometry or heart tissue for imaging analysis. Our study shows that upon RI stimulation, BMSCs homed to the recipient rat hearts’ collateral-dependent zone (CZ), proliferated, differentiated into endothelial cells, and engrafted in the vascular wall for collateral growth. These RI-induced collaterals improved coronary blood flow and cardiac function in the recipients’ hearts during ischemia. Depletion of donor CD34+ BMSCs led to impaired CCG in the recipient rats, indicating that this cell population is essential to the process. Overall, these results show that BMSCs contribute to CCG and suggest that regulation of the function of BMSCs to promote CCG might be a potential therapeutic approach for IHD.
Keywords: bone marrow stem cells; coronary collateral growth; repetitive ischemia; coronary blood flow; coronary microcirculation bone marrow stem cells; coronary collateral growth; repetitive ischemia; coronary blood flow; coronary microcirculation

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MDPI and ACS Style

Enrick, M.; Jamaiyar, A.; Ohanyan, V.; Juguilon, C.; Kolz, C.; Shi, X.; Janota, D.; Wan, W.; Richardson, D.; Stevanov, K.; et al. The Roles of Bone Marrow-Derived Stem Cells in Coronary Collateral Growth Induced by Repetitive Ischemia. Cells 2023, 12, 242. https://doi.org/10.3390/cells12020242

AMA Style

Enrick M, Jamaiyar A, Ohanyan V, Juguilon C, Kolz C, Shi X, Janota D, Wan W, Richardson D, Stevanov K, et al. The Roles of Bone Marrow-Derived Stem Cells in Coronary Collateral Growth Induced by Repetitive Ischemia. Cells. 2023; 12(2):242. https://doi.org/10.3390/cells12020242

Chicago/Turabian Style

Enrick, Molly, Anurag Jamaiyar, Vahagn Ohanyan, Cody Juguilon, Christopher Kolz, Xin Shi, Danielle Janota, Weiguo Wan, Devan Richardson, Kelly Stevanov, and et al. 2023. "The Roles of Bone Marrow-Derived Stem Cells in Coronary Collateral Growth Induced by Repetitive Ischemia" Cells 12, no. 2: 242. https://doi.org/10.3390/cells12020242

APA Style

Enrick, M., Jamaiyar, A., Ohanyan, V., Juguilon, C., Kolz, C., Shi, X., Janota, D., Wan, W., Richardson, D., Stevanov, K., Hakobyan, T., Shockling, L., Diaz, A., Usip, S., Dong, F., Zhang, P., Chilian, W. M., & Yin, L. (2023). The Roles of Bone Marrow-Derived Stem Cells in Coronary Collateral Growth Induced by Repetitive Ischemia. Cells, 12(2), 242. https://doi.org/10.3390/cells12020242

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