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Modeling amyotrophic lateral sclerosis in pure human iPSc-derived motor neurons isolated by a novel FACS double selection technique

Abstract : Amyotrophic lateral sclerosis (ALS) is a severe and incurable neurodegenerative disease. Human motor neurons generated from induced pluripotent stem cells (iPSc) offer new perspectives for disease modeling and drug testing in ALS. In standard iPSc-derived cultures, however, the two major phenotypic alterations of ALS--degeneration of motor neuron cell bodies and axons--are often obscured by cell body clustering, extensive axon criss-crossing and presence of unwanted cell types. Here, we succeeded in isolating 100% pure and standardized human motor neurons by a novel FACS double selection based on a p75(NTR) surface epitope and an HB9::RFP lentivirus reporter. The p75(NTR)/HB9::RFP motor neurons survive and grow well without forming clusters or entangled axons, are electrically excitable, contain ALS-relevant motor neuron subtypes and form functional connections with co-cultured myotubes. Importantly, they undergo rapid and massive cell death and axon degeneration in response to mutant SOD1 astrocytes. These data demonstrate the potential of FACS-isolated human iPSc-derived motor neurons for improved disease modeling and drug testing in ALS and related motor neuron diseases.
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https://hal-pasteur.archives-ouvertes.fr/pasteur-03255509
Contributor : Stéphane Blanchard Connect in order to contact the contributor
Submitted on : Wednesday, June 9, 2021 - 3:45:49 PM
Last modification on : Tuesday, October 19, 2021 - 10:52:01 PM

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Diana Toli, Dorothée Buttigieg, Stéphane Blanchard, Thomas Lemonnier, Boris Lamotte d'Incamps, et al.. Modeling amyotrophic lateral sclerosis in pure human iPSc-derived motor neurons isolated by a novel FACS double selection technique. Neurobiology of Disease, Elsevier, 2015, 82, pp.269-280. ⟨10.1016/j.nbd.2015.06.011⟩. ⟨pasteur-03255509⟩

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