| Autor: |
Lim, Amos A., Pouyabahar, Delaram, Ashraf, Mishal, Huang, Kate, Lohbihler, Michelle, Murareanu, Brandon M., Chang, Matthew L., Kwan, Maggie, Alibhai, Faisal J., Tran, Thinh, Mazine, Amine, Laflamme, Michael A., Bader, Gary D., Laksman, Zachary, Protze, Stephanie |
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| Zdroj: |
Nature Communications; 11/27/2024, Vol. 15 Issue 1, p1-22, 22p |
| Abstrakt: |
The sinoatrial node regulates the heart rate throughout life. Failure of this primary pacemaker results in life-threatening, slow heart rhythm. Despite its critical function, the cellular and molecular composition of the human sinoatrial node is not resolved. Particularly, no cell surface marker to identify and isolate sinoatrial node pacemaker cells has been reported. Here we use single-nuclei/cell RNA sequencing of fetal and human pluripotent stem cell-derived sinoatrial node cells to reveal that they consist of three subtypes of pacemaker cells: Core Pacemaker, Sinus Venosus, and Transitional Cells. Our study identifies a host of sinoatrial node pacemaker markers including MYH11, BMP4, and the cell surface antigen CD34. We demonstrate that sorting for CD34+ cells from stem cell differentiation cultures enriches for sinoatrial node cells exhibiting a functional pacemaker phenotype. This sinoatrial node pacemaker cell surface marker is highly valuable for stem cell-based disease modeling, drug discovery, cell replacement therapies, and the targeted delivery of therapeutics to sinoatrial node cells in vivo using antibody-drug conjugates. Lim et al. identify CD34 as a surface marker of the heart's sinoatrial node pacemaker cells, enabling their isolation from stem cell differentiation cultures, advancing future disease modeling, drug discovery, and biological pacemaker applications. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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