Ex Vivo Gene Therapy Using Patient IPSC-derived NSCs Reverses Pathology in the Brain of a Homologous Mouse Model
Overview
Affiliations
Neural stem cell (NSC) transplantation is a promising strategy for delivering therapeutic proteins in the brain. We evaluated a complete process of ex vivo gene therapy using human induced pluripotent stem cell (iPSC)-derived NSC transplants in a well-characterized mouse model of a human lysosomal storage disease, Sly disease. Human Sly disease fibroblasts were reprogrammed into iPSCs, differentiated into a stable and expandable population of NSCs, genetically corrected with a transposon vector, and assessed for engraftment in NOD/SCID mice. Following neonatal intraventricular transplantation, the NSCs engraft along the rostrocaudal axis of the CNS primarily within white matter tracts and survive for at least 4 months. Genetically corrected iPSC-NSCs transplanted post-symptomatically into the striatum of adult Sly disease mice reversed neuropathology in a zone surrounding the grafts, while control mock-corrected grafts did not. The results demonstrate the potential for ex vivo gene therapy in the brain using human NSCs from autologous, non-neural tissues.
Human iPSC-derived neural stem cells engraft and improve pathophysiology of MPS I mice.
Calhoun C, Kan S, Stover A, Harb J, Monuki E, Wang R Mol Ther Methods Clin Dev. 2025; 32(4):101367.
PMID: 39764351 PMC: 11701249. DOI: 10.1016/j.omtm.2024.101367.
Carvalho S, Santos J, Moreira L, Goncalves M, David H, Matos L Biomedicines. 2023; 11(4).
PMID: 37189853 PMC: 10135551. DOI: 10.3390/biomedicines11041234.
Generation and characterization of an immunodeficient mouse model of mucopolysaccharidosis type II.
Smith M, Belur L, Karlen A, Podetz-Pedersen K, Erlanson O, Laoharawee K Mol Genet Metab. 2023; 138(4):107539.
PMID: 37023503 PMC: 10705040. DOI: 10.1016/j.ymgme.2023.107539.
Gene-modified neural progenitor cells for the treatment of neuropathic lysosomal storage diseases.
Mandolfo O, Bigger B Neural Regen Res. 2023; 18(9):1954-1955.
PMID: 36926718 PMC: 10233779. DOI: 10.4103/1673-5374.367845.
Placci M, Giannotti M, Muro S Adv Drug Deliv Rev. 2023; 197:114683.
PMID: 36657645 PMC: 10629597. DOI: 10.1016/j.addr.2022.114683.