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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Neurosci. | doi: 10.3389/fnins.2019.01141

MicroRNA-based separation of cortico-fugal projection neuron-like cells derived from embryonic stem cells

  • 1Center for iPS Cell Research and Application, Kyoto University, Japan
  • 2Department of Neurosurgery, Kyoto University Hospital, Japan

The purification of pluripotent stem cell-derived cortico-fugal projection neurons (PSC-CFuPNs) is useful for disease modeling and cell therapies related to the dysfunction of cortical motor neurons, such as amyotrophic lateral sclerosis or stroke. However, no CFuPN-specific surface markers for the purification are known. Recently, microRNAs (miRNAs) have been reported as alternatives to surface markers. Here we investigated this possibility by applying the miRNA switch, an mRNA technology, to enrich PSC-CFuPNs. An array study of miRNAs in mouse fetal brain tissue revealed that CFuPNs highly express miRNA-124-3p at E14.5 and E16.5. In response, we designed a miRNA switched that responds to miRNA-124-3p and applied it to mouse embryonic stem cell (ESC)-derived cortical neurons. Flow cytometry and qPCR analyses showed the miRNA-124-3p switch enriched CFuPN-like cells from this population. Immunocytechemical analysis confirmed vGlut1/Emx1/Bcl11b triple positive CFuPN-like cells were increased from 6.5% to 42%. Thus, our miRNA-124-3p switch can uniquely enrich live CFuPN-like cells from mouse ESC-derived cortical neurons.

Keywords: microRNA-responsive mRNA switch, Embryonic stem cell derived-neuron, cell sorting, Corticofugal projection neuron, miRNA- 124-3p

Received: 18 Aug 2019; Accepted: 10 Oct 2019.

Copyright: © 2019 Sunohara, Morizane, Matsuura, Miyamoto, Saito and Takahashi. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Prof. Jun Takahashi, Center for iPS Cell Research and Application, Kyoto University, Kyoto, 606-8507, Kyōto, Japan, jbtaka@cira.kyoto-u.ac.jp