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Longitudinal glia in the fly CNS: pushing the envelope on glial diversity and neuron-glial interactions

Published online by Cambridge University Press:  06 July 2007

Stephanie M. Stacey
Affiliation:
Graduate Program in Neurological Sciences, Montreal, QC, Canada
Graham B. Thomas
Affiliation:
Graduate Program in Neurological Sciences, Montreal, QC, Canada
Alain LabbÉ
Affiliation:
Centre for Research in Neuroscience, Montreal, QC, Canada
Donald J. Van Meyel*
Affiliation:
Centre for Research in Neuroscience, Montreal, QC, Canada Department of Neurology and Neurosurgery, McGill University, Montreal, QC, Canada McGill University Health Centre Research Institute, Montreal, QC, Canada
*
*Correspondence should be addressed to Donald J. Van Meyel, McGill University Centre for Research in Neuroscience Montreal General Hospital, 1650 Cedar Avenue, L7-221 Montreal, Quebec, Canada H3G 1A4 email: [email protected]

Abstract

Interactions between neurons and glial cells are crucial for nervous system development and function in all complex organisms, and many functional, morphological and molecular features of glia are well conserved among species. Here we review studies of the longitudinal glia (LG) in the Drosophila CNS. The LG envelop the neuropil in a membrane sheath, and have features resembling both oligodendrocytes and astrocytes. Because of their unique lineage, morphology and molecular features, the LG provide an excellent model to study the genetic mechanisms underlying glial subtype differentiation and diversity, glial morphogenesis and neuron–glial interactions during development. In addition, they are proving useful in understanding how glial cells maintain ion and neurotransmitter homeostasis and protect neurons from environmental insult.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2007

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