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Unknown,Transcriptomics,Genomics,Proteomics

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Conditioning lesion rat DRG time course

ABSTRACT: To identify potential regeneration-associated genes, rat dorsal root ganglia (DRG) were lesioned and then sampled at 4, 8, 12, 24, 48, 148, or 296 hrs A total of 23 samples were examined in 8 time points with 2-3 replicates each. For each array, lesioned and uninjured DRG samples were run in a two-color experiment. ----------------------------------------------------- submitters of this record cannot locate the raw data

ORGANISM(S): Rattus norvegicus

SUBMITTER: Ronald Hart

PROVIDER: E-GEOD-69466 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Conditioning lesion rat DRG time course

Project description:To identify potential regeneration-associated genes, rat dorsal root ganglia (DRG) were lesioned and then sampled at 4, 8, 12, 24, 48, 148, or 296 hrs

2015-07-06 | GSE69466 | GEO

cAMP treated rat DRGs

Project description:To identify potential regeneration-associated genes, rat cultures of dissociated dorsal root ganglia (DRG) cells were treated with dbcAMP for 0,3,6,12, or 18 hours. A total of 15 paired samples were examined in 5 time points with 3 replicates each. For each array, dbcAMP-treated and control samples were run in a two-color experiment. ----------------------------------------------------- submitters of this record cannot locate the raw data

2015-07-06 | E-GEOD-69467 | biostudies-arrayexpress

Genome-wide transcriptome analysis of neuron-enriched DRG cultures exposed to Wnt3a

Project description:To test the potential of canonical Wnt signalling to modulate nociception via transcriptional regulation in dorsal root ganglion (DRG) neurons, we performed a genome-wide transcriptome analysis of neuron-enriched DRG cultures treated with Wnt3a or vehicle for 6 hours. Total RNA obtained from neuron-enriched mouse DRG culture subjected to Wnt3a treatment for 6 hours was compared to a matched control (vehicle-treated) DRG culture.

2014-07-07 | E-GEOD-56880 | biostudies-arrayexpress

Comparative proteomics analysis of growth-primed adult dorsal root ganglia reveals key molecular mediators for peripheral nerve regeneration

Project description:Peripheral nerve injuries due to physical insults or chronic diseases are quite common, yet no pharmacological therapies are available for the effective repair of injured nerves. The slow growth rate of adult nerves and insufficient access to growth factors pose major hurdles in timely reinnervating target tissues and restoring functions after nerve injuries. A better understanding of the molecular changes that occur during the immediate regenerative reprogramming of neurons, stated here as in vivo priming, following nerve injury may reveal ideal candidates for future therapies. Hence, molecular profiling of neuronal soma within the first week of nerve injury has been the gold standard for revealing molecular candidates critical for nerve regeneration. A complementary in vitro regenerative priming approach was recently shown to induce enhanced outgrowth in adult sensory neurons. In this work, we exploited the in vitro priming model to reveal novel candidates for adult nerve regeneration. We performed the whole tissue proteomics analysis of in vitro primed DRGs and compared their molecular profile with that of the in vivo primed, and control DRGs. Through this approach, we identified several commonly and uniquely altered molecules in the in vitro and in vivo primed DRGs that have the potential to modulate adult nerve regrowth. We further validated the growth inducing potential of mesencephalic astrocyte-derived neurotrophic factor (MANF), one of the hits identified in our proteomics analysis, in primary adult sensory neurons. Overall, this study showed that in vitro priming partially reproduces the molecular features in in vivo primed adult sensory neurons. The shortlisted candidates presented here from the two priming approaches may serve as potential therapeutic targets for adult nerve regeneration.

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Transcription profiling of wild type dorsal root ganglia (DRG) taken from mice 10-12 weeks, DRG taken from NT-4 -/- mice of 4-5 weeks, NT-4 -/- mice of 12 weeks

Project description:Gene expression profiling was carried out to compare labeled cRNA derived from 3 experimental groups. Group 1 was mRNA extracted from wild type dorsal root ganglia (DRG) taken from mice 10-12 weeks of age, Group 2 was mRNA extracted from DRG taken from NT-4 -/- mice of 4-5 weeks of age. Group 3 was mRNA extracted from DRGs taken from NT-4 -/- mice of 12 weeks of age. In all cases mRNA was extracted from 6-10 mice per group. The experiment was carried out a total of three times.

2012-04-19 | E-MEXP-10 | biostudies-arrayexpress

MicroRNA profiling in dorsal root ganglion after sciatic nerve injury

Project description:Changes in microRNA (miRNA) expression in the mouse L4 and L5 dorsal root ganglion following unilateral sciatic nerve transection. The timepoint of 7 days post-axotomy was chosen to capture miRNA expression profiles at a time when the injured neurons were beginning to regenerate. Two condition experiment, paired control DRG vs axotomised DRG following unilateral sciatic nerve transection. 3 biological replicates, one replicate per array. Dye swap in Replicate 2.

2011-05-06 | E-GEOD-29096 | biostudies-arrayexpress

Mouse DRG RNA-Seq

Project description:Mouse DRG RNA-Seq

| PRJNA895420 | ENA

Regeneration occurs in the CNS of CAST/Ei mice as a consequence of enhanced Activin signaling

Project description:We screened nine genetically diverse inbred mouse strains for differences in axonal growth of adult dorsal root ganglion (DRG) neurons on CNS myelin. Naïve DRG neurite outgrowth on myelin was very limited, but preconditioning the neurons by a prior sciatic nerve crush increased axonal growth substantially across all strains, with by far the greatest change in neurons from CAST/Ei mice. Three independent in vivo CNS injury models revealed greater capacity for CNS axonal regeneration in CAST/Ei than C57BL/6 mice. Full-genome expression profiling of naïve and pre-conditioned DRGs across all strains revealed Activin-βA (Inhba) as the transcript whose expression most closely correlated with axonal growth on myelin. In vitro and in vivo gain- and loss-of-function experiments confirmed that Activin promotes axonal growth in the CNS. Substantial regeneration is possible, therefore, in the injured mammalian CNS when Activin signaling is intrinsically high, as in CAST/Ei or when extrinsically modulated in other strains. 9 strains, 4 replicates per strain, 2 conditions (naïve and axotomy) = 72 samples. 2 samples were excluded because technical outliers (AJ_AX5D_1 and AJ_NAIVE_4 excluded from the normalized data but included in the raw data)

2015-05-14 | E-GEOD-55424 | biostudies-arrayexpress

DRG-CSC co-culture tissue engineered model, CSCs monoculture model and DRG monoculture model

Project description:In this study, we constructed a tissue-engineered DRG-CSC (corneal stromal cells) co-cultured model (DS model), a CSC monoculture model (S model), and a DRG monoculture model (D model). Chicken DRGs were extracted from E7-E10 chicken embryo. Human CSCs were extracted in stromal lenticules from small incision lenticule extraction (SMILE). Transcriptional profiling of DRG in the DS model (DS-D), DRG in the D model(D-D), CSCs in the DS model (DS-S), CSCs in the S model (S-S) was analyzed. After 7 days of culture, RNA of each group was extracted.

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RNA-Seq of rat dorsal root ganglions treated with paclitaxel against untreated controls

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2023-10-16 | E-MTAB-13430 | biostudies-arrayexpress

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