DNA methylation reprogramming after spinal nerve injury [RRBS]
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ABSTRACT:
PROVIDER: PRJNA472956 | ENA |
REPOSITORIES: ENA
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Project description:Purpose: Nerve injury-induced hyperactivity of primary sensory neurons in the dorsal root ganglion (DRG) contributes critically to chronic pain development, but its underlying mechanisms remain incompletely understood. Chronic neuropathic pain has a clear epigenetic component, however, most studies so far have focused on histone modifications. We determined changes of DNA methylation in the rat DRG, spinal cord, and prefrontal cortex after spinal nerve ligation (SNL).
2018-07-05 | GSE114865 | GEO
Project description:Purpose: Nerve injury-induced hyperactivity of primary sensory neurons in the dorsal root ganglion (DRG) contributes critically to chronic pain development, but its underlying mechanisms remain incompletely understood. Chronic neuropathic pain has a clear epigenetic component, however, most studies so far have focused on histone modifications. We determined changes of DNA methylation in the rat DRG, spinal cord, and prefrontal cortex after spinal nerve ligation (SNL).
2018-06-29 | GSE100641 | GEO
Project description:Genes are up and down regualted in DRG and spinal dorsal cord after peripheral nerve injury WT male adult with sciatic and femoral nerve transection 7 days, RNA was purified from ipilateral or contralateral L4-L6 DRGs or lumbar spinal dorsal cords
2015-12-10 | E-GEOD-66619 | biostudies-arrayexpress
Project description:Spinal cord injury (SCI) is a common but devastating trauma of the central nerve system. In this study, we reprogrammed cultured spinal-cord reactive astrocytes into neurons by Neurod1 expression. The mechanism of programmed conversion from astrocytes to neurons has not been clarified yet. Thus, we used label-free proteomics to identify differentially expressed proteins in Neurod1 over-expressed astrocytes and control group. A total of 1952 proteins were identified, including 92 significantly changed proteins. Among these proteins, 8 proteins were identified as candidates involving in the process of the reprogramming, based on their biological function and fold change in the bioinformatic analysis. Our study revealed that that Neurod1 can directly reprogram cultured spinal-cord reactive astrocytes into neurons, and several proteins that could play a significant role during the neuronal reprogramming were discovered.
2021-09-08 | PXD016097 | Pride
Project description:Neuropathic pain is a prevalent and debilitating chronic disease that is characterized by activation in glial cells in various pain-related regions within the central nervous system. Recent studies have suggested a sexually dimorphic role of microglia in the maintenance of neuropathic pain in rodents. Here, we utilized RNA sequencing analysis of microglia to identify whether there is a common neuropathic microglial signature and characterize the sex differences in microglia in pain-related regions in nerve injury and chemotherapy-induced peripheral neuropathy mouse models. Whilst mechanical allodynia and behavioral changes were observed in all models, transcriptomic analysis of microglia revealed no common transcriptional changes in spinal and supraspinal regions and in different neuropathic models. However, there was a substantial change in microglial gene expression within the ipsilateral lumbar spinal cord 7-days after chronic constriction injury (CCI) of the sciatic nerve. Both sexes upregulated genes associated with inflammation, phagosome, and lysosome activation, though males revealed a prominent global transcriptional shift not observed in female mice. This study demonstrates a lack of a common neuropathic microglial signature and indicates distinct sex differences in spinal microglia, suggesting they contribute to the sex-specific pain processing following nerve injury.
2021-07-27 | GSE180627 | GEO
Project description:Microglia activation contributes to the development of neuropathic pain. To identify changes of microglial gene expression during their activation after peripheral nerve injury, we employed microarray analysis of individually collected pools of 10 spinal microglia cells
2015-12-30 | GSE60670 | GEO
Project description:Activation of microglia in the spinal cord following peripheral nerve injury is critical for the development of long-lasting pain hypersensitivity. However, it remains unknown whether distinct microglia subpopulations or states contribute to different stages of pain development and maintenance. Here, we demonstrate, using single-cell RNA-sequencing, that microglia transcriptional states differ at early and late time points following nerve injury. Male microglia show more proliferation and distinct transcriptional changes in response to nerve injury comparing to females. Apolipoprotein E (Apoe) was the top upregulated gene in microglia at chronic time points after nerve injury in mice and polymorphisms in the APOE in humans are associated with chronic pain. Single-cell analysis of human spinal cord microglia reveals a subpopulation with a disease-related transcriptional signature. Our data provide a detailed analysis of transcriptional states of mouse and human spinal cord microglia and identify a previously unrecognized role for ApoE in neuropathic pain.
2020-12-07 | GSE162807 | GEO
Project description:ChIP-seq of H3K27acetylation in sham and injured nerve. Schwann cells play an important role in the response of peripheral nerve to injury. This study was designed to identify enhancers that are altered in sciatic nerve at 3 days post-injury to help identify pathways that mediate the gene expression reprogramming that occurs in Schwann cells after nerve injury. We employed ChIP-seq analysis of H3K27 acetylation as a mark of actively engaged enhancers, and compared enhancers in the distal stump of transected sciatic nerve compared to contralateral (sham) condition.
2014-12-15 | GSE63103 | GEO
Project description:As rats do not develop neuropathic pain like hypersensitivity as neonates post nerve injury but do as adults we have used these arrays to help define the processes involved in this process. Rat spinal cord (ipsilateral dorsal horn) was assayed 7 days post SNI injury to the sciatic nerve relative to sham injury. Two age groups of animals were tested Neonates (P10) and Adult (8-12wks). Experiment Overall Design: Six biologically indepenedent arrays were hybridized per assay point. Dorsal horn total RNA was prepared using standard Affymetrix protocols. Affymetrix Rat Expression 230A array used.
2009-11-10 | E-GEOD-18803 | biostudies-arrayexpress