Label-Free and High-Throughput Removal of Residual Undifferentiated Cells From iPSC-Derived Spinal Cord Progenitor Cells.
Stem Cells Transl Med
; 13(4): 387-398, 2024 Apr 15.
Article
en En
| MEDLINE
| ID: mdl-38321361
ABSTRACT
The transplantation of spinal cord progenitor cells (SCPCs) derived from human-induced pluripotent stem cells (iPSCs) has beneficial effects in treating spinal cord injury (SCI). However, the presence of residual undifferentiated iPSCs among their differentiated progeny poses a high risk as these cells can develop teratomas or other types of tumors post-transplantation. Despite the need to remove these residual undifferentiated iPSCs, no specific surface markers can identify them for subsequent removal. By profiling the size of SCPCs after a 10-day differentiation process, we found that the large-sized group contains significantly more cells expressing pluripotent markers. In this study, we used a sized-based, label-free separation using an inertial microfluidic-based device to remove tumor-risk cells. The device can reduce the number of undifferentiated cells from an SCPC population with high throughput (ie, >3 million cells/minute) without affecting cell viability and functions. The sorted cells were verified with immunofluorescence staining, flow cytometry analysis, and colony culture assay. We demonstrated the capabilities of our technology to reduce the percentage of OCT4-positive cells. Our technology has great potential for the "downstream processing" of cell manufacturing workflow, ensuring better quality and safety of transplanted cells.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Traumatismos de la Médula Espinal
/
Células Madre Pluripotentes Inducidas
/
Células-Madre Neurales
Límite:
Humans
Idioma:
En
Revista:
Stem Cells Transl Med
Año:
2024
Tipo del documento:
Article
País de afiliación:
Singapur
Pais de publicación:
Reino Unido