Document Detail

Purification and transfection of cochlear Schwann cells.
MedLine Citation:
PMID:  20837108     Owner:  NLM     Status:  MEDLINE    
Schwann cells line nerve fibers in the peripheral nervous system (PNS) and synthesize myelin. In addition, they support neuronal survival, neurite growth and regeneration. In dissociated cultures of postnatal mouse spiral ganglia, regenerating neurites spontaneously associate with Schwann cells. However, the mechanisms and consequences of interactions between cochlear Schwann cells and spiral ganglion neurites have not been examined. Further, the similarities and differences between cochlear Schwann cells and other PNS Schwann cells have not been studied. Experiments to examine these questions will rely on the ability to purify and characterize cochlear Schwann cells. Here we present methods for purifying Schwann cells from postnatal mouse cochleas and for transfecting them with expression plasmids. Dissociated spiral ganglia were plated on poly-D-lysine/laminin in medium containing neurotrophins, leukemia inhibitory factor (LIF), N2 supplement and serum and maintained for 5 days. Cells were harvested with trypsin/EDTA and subjected to an immuno-magnetic purification procedure. After 24 h in vitro, cultures were >85% Schwann cells. Nucleofection of purified Schwann cells with pMax-green fluorescent protein (pMax-GFP) plasmid, or with pEGFP-C-vimentin plasmid returned >45% transfection efficiency. These methods will allow the in-depth characterization of cochlear Schwann cells and an evaluation of their biochemical, functional, and genetic mechanisms that may promote neurite growth from the spiral ganglion.
D S Whitlon; D Tieu; M Grover
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-09-15
Journal Detail:
Title:  Neuroscience     Volume:  171     ISSN:  1873-7544     ISO Abbreviation:  Neuroscience     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-10-18     Completed Date:  2011-02-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7605074     Medline TA:  Neuroscience     Country:  United States    
Other Details:
Languages:  eng     Pagination:  23-30     Citation Subset:  IM    
Copyright Information:
Copyright © 2010 IBRO. Published by Elsevier Ltd. All rights reserved.
Department of Otolaryngology-Head and Neck Surgery, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
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MeSH Terms
Animals, Newborn
Cell Separation / methods
Cells, Cultured
Green Fluorescent Proteins / genetics
Neurites / metabolism
Receptors, Nerve Growth Factor / metabolism
SOXE Transcription Factors / metabolism
Schwann Cells / cytology*,  physiology*
Spiral Ganglion / cytology*,  growth & development*
Transfection / methods*
Tubulin / metabolism
Vimentin / metabolism
Reg. No./Substance:
0/Receptors, Nerve Growth Factor; 0/SOXE Transcription Factors; 0/Sox10 protein, mouse; 0/TNFRSF16 protein, mouse; 0/Tubulin; 0/Vimentin; 0/beta3 tubulin, mouse; 147336-22-9/Green Fluorescent Proteins

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