Transcriptomics

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Dynamic gene expression in Schwann cell for regulating myelination


ABSTRACT: To obtain the dynamic gene expression of myelinating Schwann cells, we have employed gene expression profiling microarray as a discovery platform to analyze the gene expression of Schwann cells in different stages of myelination in an DRG neuron and SC co-culture myelinating model. Rat Schwann cells and dorsal root ganglion (DRG) neurons were cocultured and induced myelination in DMEM medium containing 15% FBS, 50 ng/ml NGF and 50 μg/ml L-ascorbic acid for 21d. During the co-cultivation, myelinating SCs at different stages dissected by Laser microdissection (LMD) in myelination model (i.e. co-culture 1d, 3d, 7d, 14d, 21d), the Schwann cells without co-culture as control samples (i.e. co-culture 0d). The results from Euclidean distance matrix, principal component analysis, and hierarchical clustering indicated that 2 nodal transitions in temporal gene expressions could segregate 3 distinct transcriptional phases within the period of DRG/SC co-culture 21 days. The 3 phases were designated as “premyelination”, “myelination”, and “mature phase”, respectively, by referring to morphological observation of post co-culture changes and gene ontology (GO) analysis.

ORGANISM(S): Rattus norvegicus

PROVIDER: GSE163132 | GEO | 2022/09/21

REPOSITORIES: GEO

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