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Preparation of Rat Oligodendrocyte Progenitor Cultures and Quantification of Oligodendrogenesis Using Dual-infrared Fluorescence Scanning

Preparation of Rat Oligodendrocyte Progenitor Cultures and Quantification of Oligodendrogenesis Using Dual-infrared Fluorescence Scanning

Published on: February 17, 2016

Endothelin-1 regulates oligodendrocyte development.

Ana Gadea¹, Adan Aguirre, Tarik F Haydar

¹Center for Neuroscience Research, Children's Research Institute, Children's National Medical Center, Washington, DC 20010, USA.

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience

|August 14, 2009

Summary

Endothelin-1 (ET-1), an astrocyte signal, guides oligodendrocyte progenitor cell (OPC) migration and differentiation. ET-1 regulates OPCs via specific receptors, impacting brain development and myelination.

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Differentiation of Embryonic Stem Cells into Oligodendrocyte Precursors

Differentiation of Embryonic Stem Cells into Oligodendrocyte Precursors

Published on: May 19, 2010

Area of Science:

Neuroscience
Developmental Biology
Cell Biology

Background:

Oligodendrocyte progenitor cells (OPCs) are crucial for myelination in the postnatal brain.
The signaling pathways governing OPC migration and differentiation remain incompletely understood.

Purpose of the Study:

To investigate the role of endothelin-1 (ET-1) as an astrocyte-derived signal regulating OPC behavior.
To elucidate the mechanisms by which ET-1 influences OPC migration and differentiation.

Main Methods:

In vivo and in vitro OPC cultures.
Analysis of ET(A) and ET(B) receptor expression and function in OPCs.
Assessment of ET-1 effects on ERK and CREB phosphorylation.
Chemotaxis and chemokinesis assays.
Multiphoton time-lapse imaging of OPC migration.
Slice culture experiments to study differentiation.

Main Results:

OPCs express functional ET(A) and ET(B) receptors mediating ET-1 signaling.
ET-1 enhances OPC migration through chemotactic and chemokinetic effects.
ET-1 inhibits OPC differentiation from the O4(+) to O1(+) stage.
Astrocyte-conditioned medium promotes OPC migration via ET receptor activation.
ET receptor antagonists and anti-ET-1 antibodies inhibit OPC migration from the SVZ.
Inhibition of ET receptor activity promotes OPC differentiation in the corpus callosum.

Conclusions:

Endothelin-1 (ET-1) is a key astrocyte-derived soluble factor regulating OPC migration and differentiation.
ET-1 signaling through ET(A) and ET(B) receptors plays a critical role in postnatal brain development and myelination.