High-resolution transcriptome analysis reveals neuropathic pain gene-expression signatures in spinal microglia after nerve injury

Cited 34 time in scopus
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Title
High-resolution transcriptome analysis reveals neuropathic pain gene-expression signatures in spinal microglia after nerve injury
Author(s)
H Jeong; Y J Na; K Lee; Y H Kim; Y Lee; Min Ho Kang; B C Jiang; Young Il Yeom; L J Wu; Y J Gao; J Kim; S B Oh
Bibliographic Citation
Pain, vol. 157, no. 4, pp. 964-976
Publication Year
2016
Abstract
Microglial cells, the resident immune cells of the spinal cord, become activated in response to peripheral nerve injury. Microglia activation contributes to the development of neuropathic pain. Here we employed microarray analysis of individually collected pools of 10 spinal microglia cells to identify changes of levels and cell-to-cell expression variance of microglial genes during their activation after peripheral nerve injury. The analysis of microglia on postoperative day 1 (POD1) identified miR-29c as a critical factor for microglial activation and the development of neuropathic pain. Early POD1 microglia exhibited a very distinct expression profile compared to late POD7 microglia, possibly leading to the transition from initiation to maintenance of neuropathic pain. We found sample variance patterns that were consistent with the hypothesis that microglia were highly heterogeneous at the level of individual cells, and variation analysis identified 56 microglial genes potentially linked to the maintenance of neuropathic pain which included Gria1. This study provides insights into spinal microglial biology and reveals novel microglial targets for the treatment of neuropathic pain.
Keyword
Spinal microgliaGrai1High-resolution transcriptomemiR-29cNeuropathic pain
ISSN
0304-3959
Publisher
Kluwer
DOI
http://dx.doi.org/10.1097/j.pain.0000000000000470
Type
Article
Appears in Collections:
Division of Biomedical Research > Personalized Genomic Medicine Research Center > 1. Journal Articles
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