Journal
STEM CELL REPORTS
Volume 17, Issue 7, Pages 1772-1785Publisher
CELL PRESS
DOI: 10.1016/j.stemcr.2022.05.003
Keywords
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Categories
Funding
- Leducq Foundation [18CVD05]
- Japan Society for the Promotion of Science (JSPS) KAKENHI [15H05722, 20H05626, 17H04176, 21H02912]
- Research Center Network for Realization of Regenerative Medicine, Japan Agency of Medical Research and Development (AMED) [JP19bm0104001, JP19bm0204003, JP19bm0804008, JP20bm0804022]
- Research on Regulatory Science of Pharmaceuticals and Medical Devices, AMED [JP19mk0104117]
- Research Project for Practical Applications of Regenerative Medicine, AMED [JP19bk0104095]
- iPS Cell Research Fund
- SECOM Science and Technology Foundation
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By combining miR-switch with MACS technology, we have developed a rapid and efficient method for purifying large amounts of PSC-derived cells. This method can detect specific miRNAs in target cells and use CD4 transgene as a selection marker for MACS, achieving cell purification.
For regenerative cell therapies using pluripotent stem cell (PSC)-derived cells, large quantities of purified cells are required. Magnetic -acti-vated cell sorting (MACS) is a powerful approach to collect target antigen-positive cells; however, it remains a challenge to purify various cell types efficiently at large scale without using antibodies specific to the desired cell type. Here we develop a technology that combines microRNA (miRNA)-responsive mRNA switch (miR-switch) with MACS (miR-switch-MACS) to purify large amounts of PSC-derived cells rapidly and effectively. We designed miR-switches that detect specific miRNAs expressed in target cells and controlled the translation of a CD4-coding transgene as a selection marker for MACS. For the large-scale purification of induced PSC-derived cardiomyocytes (iPSC-CMs), we transferred miR-208a-CD4 switch-MACS and obtained purified iPSC-CMs efficiently. Moreover, miR-375-CD4 switch-MACS highly purified pancreatic insulin-producing cells and their progenitors expressing Chromogranin A. Overall, the miR-switch-MACS method can efficiently purify target PSC-derived cells for cell replacement therapy.
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