Human Keratinocytes Adopt Neuronal Fates After In Utero Transplantation in the Developing Rat Brain.

Abstract:

:Human skin contains keratinocytes in the epidermis. Such cells share their ectodermal origin with the central nervous system (CNS). Recent studies have demonstrated that terminally differentiated somatic cells can adopt a pluripotent state, or can directly convert its phenotype to neurons, after ectopic expression of transcription factors. In this article we tested the hypothesis that human keratinocytes can adopt neural fates after culturing them in suspension with a neural medium. Initially, keratinocytes expressed Keratins and Vimentin. After neural induction, transcriptional upregulation of NESTIN, SOX2, VIMENTIN, SOX1, and MUSASHI1 was observed, concomitant with significant increases in NESTIN detected by immunostaining. However, in vitro differentiation did not yield the expression of neuronal or astrocytic markers. We tested the differentiation potential of control and neural-induced keratinocytes by grafting them in the developing CNS of rats, through ultrasound-guided injection. For this purpose, keratinocytes were transduced with lentivirus that contained the coding sequence of green fluorescent protein. Cell sorting was employed to select cells with high fluorescence. Unexpectedly, 4 days after grafting these cells in the ventricles, both control and neural-induced cells expressed green fluorescent protein together with the neuronal proteins βIII-Tubulin and Microtubule-Associated Protein 2. These results support the notion that in vivo environment provides appropriate signals to evaluate the neuronal differentiation potential of keratinocytes or other non-neural cell populations.

journal_name

Cell Transplant

journal_title

Cell transplantation

authors

Tenorio-Mina A,Cortés D,Esquivel-Estudillo J,López-Ornelas A,Cabrera-Wrooman A,Lara-Rodarte R,Escobedo-Avila I,Vargas-Romero F,Toledo-Hernández D,Estudillo E,Acevedo-Fernández JJ,Tapia JS,Velasco I

doi

10.1177/0963689720978219

subject

Has Abstract

pub_date

2021-01-01 00:00:00

pages

963689720978219

eissn

0963-6897

issn

1555-3892

journal_volume

30

pub_type

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