Protocol for the induction of human spinal motor neurons from human induced pluripotent stem cells for studying amyotrophic lateral sclerosis
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Updated: Jun 11, 2026

Conversion of Human Induced Pluripotent Stem Cells iPSCs into Functional Spinal and Cranial Motor Neurons Using PiggyBac Vectors
Published on: May 1, 2019
Selena Setsu1, Satoru Morimoto2, Shiho Nakamura2
1Keio University Regenerative Medicine Research Center, Kanagawa 210-0821, Japan; Laboratory of RNA Function, Institute for Quantitative Biosciences, The University of Tokyo, Tokyo 113-0032, Japan; Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo 277-0822, Japan.
Abstract:
Here, we present a protocol for inducing spinal lower motor neurons (LMNs) from human induced pluripotent stem cells (iPSCs). We describe steps for preparation of a chemically induced transitional state (CTraS), transduction with Sendai virus, and LMN differentiation and maintenance. We then detail procedures for live imaging for single-cell-based survival analysis and neurite length of LMNs using BioStation and immunocytochemistry for induction efficiency check. This protocol is optimized for amyotrophic lateral sclerosis (ALS) research and large-scale screening. For complete details on the use and execution of this protocol, please refer to Setsu et al.1.
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