RNA-seq of human nociceptor-like sensory neurons with varying Neurogenin 1 induction lengths
Ontology highlight
ABSTRACT:
PROVIDER: PRJEB55442 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| ERR10089558.fastq.gz | Fastqsanger.gz | |||
| ERR10089559.fastq.gz | Fastqsanger.gz | |||
| ERR10089560.fastq.gz | Fastqsanger.gz | |||
| ERR10089561.fastq.gz | Fastqsanger.gz | |||
| ERR10089562.fastq.gz | Fastqsanger.gz |
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Project description:The goal of this study was to analyze global gene expression in specific populations of nociceptor sensory neurons, the neurons that detect damaging/noxious stimuli. The dorsal root ganglia (DRG), trigeminal ganglia, and nodose ganglia are anatomically distinct peripheral sensory ganglia that contain nociceptors which innervate skin, gut, lungs, and other distinct organ tissues. We used flow cytometry to purify nociceptors from these ganglia and profiled their global gene expression signatures to compare gene expression between these different anatomically distinct nociceptors. Nav1.8-Cre were bred with Rosa26-TdTomato to generate Nav1.8-Cre/R26-TdTomato reporter progeny, where all peripheral nociceptor neurons are genetically marked with red fluroescence due to specific expression of the TTX- resistant sodium channel Nav1.8. Lumbar region dorsal root ganglia (DRG), trigeminal ganglia, and nodose ganglia were dissected from mice (3 mice were pooled/sample). Highly red fluorescent neurons were Facs purified, RNA extracted, and processed for microarray analysis.
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Project description:The goal of this study was to analyze global gene expression in specific populations of nociceptor sensory neurons, the neurons that detect damaging/noxious stimuli. The dorsal root ganglia (DRG), trigeminal ganglia, and nodose ganglia are anatomically distinct peripheral sensory ganglia that contain nociceptors which innervate skin, gut, lungs, and other distinct organ tissues. We used flow cytometry to purify nociceptors from these ganglia and profiled their global gene expression signatures to compare gene expression between these different anatomically distinct nociceptors.
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Project description:RNA-seq of human nociceptor-like sensory neurons at different ages of differentiation
| PRJEB55443 | ENA
Project description:Induced pluripotent stem cells were differentiated into neural crest progenitors and infected with a lentiviral construct that contains a doxycyclin-inducible Neurogenin 1(Ngn1) cassette. The samples represent RNA-sequencing from initial neural crest stage (day 0) and doxycyclin treatment (days 0 - 10) followed by differentiation without induction of Ngn1 (days 12 till end).
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Project description:Nociceptors are specialized sensory neurons implicated in the reception and transduction of painful stimuli. Many pain disorders directly affect nociceptors but mechanistic insight into underlying pathway regulations is limited by the translational paresis from animal models to human pain disorders. Although transcriptomic data are available for rodent and post-mortem patient samples, no comprehensive transcriptomic data are currently available for human nociceptor development. Here, we performed paired long and small RNA sequencing for six timepoints during nociceptor differentiation from three different human iPSC cell lines. Complex bioinformatics analyses for differential gene expression, protein-protein interactions and mRNA targeting by microRNAs revealed five distinct differentiation stages with critical hub genes and microRNAs guiding nociceptor development. The online resource platform NOCICEPTRA was specifically developed to visualize respective mRNA and microRNA trajectories, as well as query disease specific pathways, thereby enabling researchers to determine susceptibility windows for nociceptor-associated disorders as well as possible new treatment targets.
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Project description:Immune responses within barrier tissues are regulated, in part, by nociceptors, specialized peripheral sensory neurons that detect noxious stimuli. Previous work has shown that nociceptor ablation not only alters local responses at peripheral sites of immune challenge, but also within draining lymph nodes (LNs). The mechanism and significance of nociceptor-dependent modulation of LN homeostasis are unknown. Indeed, although sympathetic innervation of LNs is well documented, it has been unclear whether the LN parenchyma itself is innervated by sensory neurons. Here, using a combination of high-resolution imaging, retrograde viral tracing, optogenetics, and single-cell transcriptomics (scRNA-seq), we describe a sensory neuro-immune circuit that is preferentially located in the outermost cortex of skin-draining LNs. Transcriptomic profiling revealed that sensory neurons that innervate LNs are composed of at least four discrete subsets with a predominance of peptidergic nociceptors, an innervation pattern that is distinct from that in the surrounding skin. To identify potential LN-resident communication partners for LN-innervating sensory neurons, we employed scRNA-seq to generate an atlas of all murine LN cells and, based on receptor-ligand expression patterns, nominated candidate target populations among stromal and immune cells. We experimentally validated these inferred connections by comparing scRNA-seq signatures before and after selective optogenetic stimulation of LN-innervating axons. Acute neuronal activation triggered rapid transcriptional changes preferentially in endothelium and other nodal stroma cells, as well as in several innate leukocyte populations. Thus, LNs are monitored by a unique population of sensory neurons that possess profound immunomodulatory potential.
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