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Phenotypic changes in satellite glial cells in cultured trigeminal ganglia

Published online by Cambridge University Press:  28 October 2011

Vitali Belzer ,
Nathanael Shraer  and
Menachem Hanani
Vitali Belzer
Affiliation:
Laboratory of Experimental Surgery, Hadassah-Hebrew University Medical Center, Mount Scopus, Jerusalem 91240, Israel
Nathanael Shraer
Affiliation:
Laboratory of Experimental Surgery, Hadassah-Hebrew University Medical Center, Mount Scopus, Jerusalem 91240, Israel
Menachem Hanani*
Affiliation:
Laboratory of Experimental Surgery, Hadassah-Hebrew University Medical Center, Mount Scopus, Jerusalem 91240, Israel
*
Correspondence should be addressed to: Menachem Hanani, Ph.D., Laboratory of Experimental Surgery, Hadassah University Hospital, Mount Scopus, Jerusalem 91240, Israel phone: +972-2-5844721 fax: +972-2-5823515 email: hananim@cc.huji.ac.il
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Abstract

Satellite glial cells (SGCs) are specialized cells that form a tight sheath around neurons in sensory ganglia. In recent years, there is increasing interest in SGCs and they have been studied in both intact ganglia and in tissue culture. Here we studied phenotypic changes in SGCs in cultured trigeminal ganglia from adult mice, containing both neurons and SGCs, using phase optics, immunohistochemistry and time-lapse photography. Cultures were followed for up to 14 days. After isolation virtually every sensory neuron is ensheathed by SGCs, as in the intact ganglia. After one day in culture, SGCs begin to migrate away from their parent neurons, but in most cases the neurons still retain an intact glial cover. At later times in culture, there is a massive migration of SGCs away from the neurons and they undergo clear morphological changes, and at 7 days they become spindle-shaped. At one day in culture SGCs express the glial marker glutamine synthetase, and also the purinergic receptor P2X7. From day 2 in culture the glutamine synthetase expression is greatly diminished, whereas that of P2X7 is largely unchanged. We conclude that SGCs retain most of their characteristics for about 24 h after culturing, but undergo major phenotypic changes at later times.

Keywords

Tissue culturesatellite glial cellstrigeminal ganglionglutamine synthetaseP2X7 receptors
Type
Research Article
Information
Neuron Glia Biology , Volume 6 , Issue 4 , November 2010 , pp. 237 - 243
Copyright
Copyright © Cambridge University Press 2011

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