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Transcriptional profile of Tim-3+ and Tim-3- CD8+ T cells from trigeminal ganglion 8 days post HSV-1 infection

ABSTRACT: Transcriptional profile of Tim-3+ and Tim-3- CD8+ T cells from trigeminal ganglion 8 days post HSV-1 infection

PROVIDER: PRJNA574060 | ENA |

REPOSITORIES: ENA

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Transcriptional profile of Tim-3+ and Tim-3- CD8+ T cells from trigeminal ganglion 8 days post HSV-1 infection

Project description:The goal of this study was to compare the transcriptional profile between different subpopulations of CD8+ T cells in the trigeminal ganglion 8 days post HSV-1 infection. Within the HSV-1 infected TG, essentially all of the CD8+ T cells are virus specific and by using a tetramer for the immunodominant epitope from glycoprotein B (gB), we can separate the CD8+ T cell response into two populations: the gB-CD8+ T cells and the Subdom-CD8+ T cells. These populations have different levels of functionality during viral latency and express different checkpoint molecules that may influence this. Past work has shown that expression of PD-1 is associated with impaired functionality in this model and we are currently investigating the role of Tim-3, as there is little overlap in expression between Tim-3 and PD-1 and Tim-3 appears to mark functional cells when assessed by flow cytometry. By sorting cells first by using tetramer to create two populations of CD8+ T cells and then further separating these populations using expression of Tim-3 and PD-1, we have isolated subpopulations to assess what genes are up and downregulated in Tim-3+ cells compared to Tim-3- cells in each population.

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Project description:The sensitization of trigeminal ganglion neurons contributes to primary headache disorders such as migraine, but the specific neuronal and non-neuronal trigeminal subtypes involved remain unclear. We thus developed a cell atlas in which human and mouse trigeminal ganglia are transcriptionally and epigenomically profiled at single-cell resolution. These data describe evolutionarily conserved and human-specific gene expression patterns within each trigeminal ganglion cell type, as well as the transcription factors and gene regulatory elements that contribute to cell-type-specific gene expression. We then leverage these data to identify trigeminal ganglion cell types that are implicated both by human genetic variation associated with migraine and two mouse models of headache. This trigeminal ganglion cell atlas improves our understanding of the cell types, genes, and epigenomic features involved in headache pathophysiology and establishes a rich resource of cell-type-specific molecular features to guide the development of more selective treatments for headache and facial pain.

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RNA-seq: H3K9ac regulated by HDAC3 in trigeminal ganglion of SD rat trigeminal neuralgia model

Project description:RNA-seq: H3K9ac regulated by HDAC3 in trigeminal ganglion of SD rat trigeminal neuralgia model

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RNA-seq: H3K9ac regulated by HDAC3 in trigeminal ganglion of SD rat trigeminal neuralgia model

Project description:The epigenetic roles in trigeminal neuralgia (TN) still remain unclear. H3K9ac alteration in neuralgia is obscure and controversy. In this study, we established TN rat model via chronic compression, and further treated with 100 mg/kg/d carbamazepine (CBZ). RNA-seq were conducted to investigate the transcriptional profilings in control, TN and TN+CBZ.

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Project description:ChIP-seq to investigate H3K9ac regulation by HDAC3 in trigeminal ganglion of SD rat trigeminal neuralgia model

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ChIP-seq to investigate H3K9ac regulation by HDAC3 in trigeminal ganglion of SD rat trigeminal neuralgia model

Project description:The epigenetic roles in trigeminal neuralgia (TN) still remain unclear. H3K9ac alteration in neuralgia is obscure and controversy. In this study, we established TN rat model via chronic compression, and further treated with 100 mg/kg/d carbamazepine (CBZ). ChIP-seq were conducted to investigate the genome-wide distribution of H3K9ac and HDAC3 in control, TN and TN+CBZ.

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2022-05-24 | GSE186421 | GEO

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Project description:Trigeminal ganglion (TG) is the first station of sensory pathways in the orofacial region. The TG neurons communicate with satellite glial cells (SGCs), macrophages and other cells forming a functional unit that is responsible for processing of orofacial sensory information. Purinergic signaling, one of the most widespread autocrine and paracrine pathways, plays a crucial role in intercellular communication. The multidirectional action of purinergic signaling in different cell types contributes to the neuromodulation and orofacial sensation. To fully understand the purinergic signaling in these processes, it is essential to determine the shared and unique expression patterns of genes associated with purinergic signaling in different cell types. Here, we performed single-cell RNA sequencing of 22,969 cells isolated from normal mouse TGs. We identified 18 distinct cell populations, including 6 neuron subpopulations, 3 glial subpopulations, 7 immune cell subpopulations, fibroblasts, and endothelial cells. We also revealed the transcriptional features of genes associated with purinergic signaling, including purinergic receptors, extracellular adenosine triphosphate (eATP) release channels, eATP metabolism-associated enzymes, and eATP transporters) in each cell type. Our results have important implications for understanding and predicting the cell type-specific roles of the purinergic signaling in orofacial signal processing in the trigeminal primary sensory system.

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