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Single Cell RNAseq Uncovers a Robust Transcriptional Response to Morphine by Glia

ABSTRACT: Single Cell RNAseq Uncovers a Robust Transcriptional Response to Morphine by Glia

PROVIDER: PRJNA487317 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR7740860.fastq.gz	Fastqsanger.gz
	SRR7740870.fastq.gz	Fastqsanger.gz
	SRR7740861.fastq.gz	Fastqsanger.gz
	SRR7740871.fastq.gz	Fastqsanger.gz
	SRR7740862.fastq.gz	Fastqsanger.gz

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Single Cell RNAseq Uncovers a Robust Transcriptional Response to Morphine by Glia

Project description:Molecular and behavioral responses to opioids are thought to be primarily mediated by neurons, although there is accumulating evidence that other cell types play a prominent role in drug addiction. To investigate cell-type-specific opioid responses, we performed single-cell RNA sequencing of the nucleus accumbens of mice following acute morphine treatment. Differential expression analysis uncovered unique morphine-dependent transcriptional responses by oligodendrocytes and astrocytes. Further analysis using RNAseq of FACS-purified oligodendrocytes revealed a large cohort of morphine-regulated genes. Importantly, the affected genes are enriched for roles in cellular pathways intimately linked to oligodendrocyte maturation and myelination, including the unfolded protein response. Altogether, our data illuminate the morphine-dependent transcriptional response by oligodendrocytes and offer mechanistic insights into myelination defects associated with opioid abuse.

2018-08-23 | GSE118918 | GEO

Single nuclei RNAseq of rat area nucleus accumbens after morphine exposure

Project description:We performed single-nuclei RNAseq of Brown Norway rat nucleus accumbens after a single injection of morphine or after morhpine self-administration

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Single-Cell RNA-Seq Uncovers a Robust Transcriptional Response to Morphine by Glia.

Project description:Molecular and behavioral responses to opioids are thought to be primarily mediated by neurons, although there is accumulating evidence that other cell types play a prominent role in drug addiction. To investigate cell-type-specific opioid responses, we performed single-cell RNA sequencing (scRNA-seq) of the nucleus accumbens of mice following acute morphine treatment. Differential expression analysis uncovered unique morphine-dependent transcriptional responses by oligodendrocytes and astrocytes. We examined the expression of selected genes, including Cdkn1a and Sgk1, by FISH, confirming their induction by morphine in oligodendrocytes. Further analysis using RNA-seq of FACS-purified oligodendrocytes revealed a large cohort of morphine-regulated genes. The affected genes are enriched for roles in cellular pathways intimately linked to oligodendrocyte maturation and myelination, including the unfolded protein response. Altogether, our data illuminate the morphine-dependent transcriptional response by oligodendrocytes and offer mechanistic insights into myelination defects associated with opioid abuse.

| S-EPMC6357782 | biostudies-literature

Multi-task learning uncovers robust translation cis-regulatory features

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Morphine PVT TRAPSeq

Project description:Using an oral self-administration paradigm, we have seen morphine increase neural activity in the Paraventricular Nucleus of the Thalamus (PVT). Morphine binds primarily to Mu Opioid Receptors (MORs), which are highly expressed in the PVT. Translating Ribosome Affinity Purification (TRAP)-Sequencing was conducted on PVT neurons that express MORs

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Single nuclei RNAseq of rat area nucleus accumbens after morphine exposure

Project description:Single nuclei RNAseq of rat area nucleus accumbens after morphine exposure

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Morphine PVT TRAPSeq

Project description:Morphine PVT TRAPSeq

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Transcriptional profiling of Regulatory T cells isolated from mice exposed to Smoke, Morphine and Smoke plus Morphine

Project description:Purpose: The goals of this study were to identify gene expression signatures that are unique to Tregs from mice upon treatments with smoke, morphine and smoke plus morphine Methods and results: Wild-type mice were treated with cigarette smoke (SM) for a period of eight weeks, and/or the chronic continuous administration of morphine (M) via mini-pumps for the final four weeks CD4+CD25highCD127low Tregs from spleen were purified by cell sorting to generate mRNA transcription. Transcriptional profiling revealed a unique Treg signatures in SM, M or SM + M relative to control mice. Conclusion: Our study represents the first detailed analysis of splenic Treg transcriptome in mice exposure to smoke plus morphine.

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Effects of neonatal stress and morphine on murine hippocampal gene expression

Project description:Critically ill preterm infants experience multiple stressors while hospitalized. Morphine is commonly prescribed to ameliorate their pain and stress. We hypothesized that neonatal stress will have a dose-dependent effect on hippocampal gene expression, and these effects will be altered by morphine treatment. Male C57BL/6 mice were exposed to 5 treatment conditions between postnatal day 5 and 9: 1) Control, 2) mild stress + saline, 3) mild stress + morphine, 4) severe stress + saline and 5) severe stress + morphine. Hippocampal RNA was extracted and analyzed using Affymetrix Mouse Gene 1.0 ST Arrays. Single gene analysis and gene set analysis were used to compare groups with validation by qPCR. Stress resulted in enrichment of genes sets related to fear response, oxygen carrying capacity and NMDA receptor synthesis. Morphine downregulated gene sets related to immune function. Stress plus morphine resulted in enrichment of mitochondrial electron transport gene sets, and down-regulation of gene sets related to brain development and growth. We conclude that neonatal stress alone influences hippocampal gene expression, morphine alters a subset of stress-related changes in gene expression and influences other gene sets. Stress plus morphine show interaction effects not present with either stimulus alone. These changes may alter neurodevelopment. Male mice were exposed to 5 treatment conditions between postnatal day (P)5 and P9 (n=3/group), with birth recorded as P1. Litters were culled to n=7 maximum per dam. Groups included: 1) Untreated controls (CC), 2) mild stress + saline (MSS), 3) mild stress + morphine (MSM), 4) severe stress + saline (SSS) and 5) severe stress + morphine (SSM).

2013-08-30 | E-GEOD-50382 | biostudies-arrayexpress

Expression profiling of Ascl1-reprogrammed P12 Müller glia compared with freshly dissociated progenitors and Müller glia

Project description:Non-mammalian vertebrates have a robust ability to regenerate injured retinal neurons from Müller glia cells (MG) that activate the proneural factor Achaete-scute homolog 1 (Ascl1/Mash1) and de-differentiate into progenitors cells. In contrast, mammalian MG have a limited regenerative response and fail to upregulate Ascl1 after injury. To test whether Ascl1 could restore a neurogenic potential to mammalian MG, we over-expressed Ascl1 in dissociated mouse MG cultures and intact retinal explants. Ascl1-infected MG upregulate retinal progenitor-specific genes, while downregulating glial genes. Furthermore, Ascl1 remodeled the chromatin at its targets from a repressive to active configuration. MG-derived progenitors differentiated into cells that exhibited neuronal morphologies, expressed retinal subtype-specific neuronal markers, and displayed neuron-like physiological responses. These results indicate that a single transcription factor, Ascl1, can produce a neurogenic state in mature Muller glia. Expresssion profiling was used to determine the genes that were changed after Ascl1 infection of P12 cultured Müller glia compared with those present in P0 progenitors and P7-P21 Müller glia Retinas were dissociated and FAC-sorted from Hes5-GFP mice at P0, P7, P10, P14 or P21 and submitted for profiling. WT Retinas were dissociated at P12, grown for 1 week in culture, and infected with lentiviruses expressing Ascl1 or GFP for four days. Total RNA was extracted and submitted for profiling.

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