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MicroRNA profiling by high-throughput sequencing in the substantia nigra and striatum of Multiple System Atrophy (MSA) transgenic mice and wild type controls

ABSTRACT: Multiple system atrophy (MSA) is a fatal rapidly progressive Ia-synucleinopathy, characterized by prominent Ia-synuclein accumulation in oligodendrocytes. In this study we investigated miRNA expression in the substantia nigra and striatum of MSA transgenic mice (Tg(Plp1-SNCA)1Haa) and wild type controls. This forms part of a larger study in which we investigated miRNA-mRNA regulatory network in substantia nigra and striatum of MSA transgenic mice in pre-motor stage of neurodegenration.

INSTRUMENT(S): Ion Torrent Proton

ORGANISM(S): Mus musculus

SUBMITTER: Rimpi Khurana

PROVIDER: E-MTAB-3993 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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miRNA microarray analysis of the substantia nigra and stratum in a mouse model of multiple system atrophy

Project description:Multiple system atrophy (MSA) is a fatal rapidly progressive Î±-synucleinopathy, characterized by prominent Î±-synuclein accumulation in oligodendrocytes. In this study we used Exiqon microarrays to investigate micro RNA expression in substantia nigra and striatum of MSA transgenic mice (Tg(Plp1-SNCA)1Haa) and wild type controls. This forms part of a larger study in which we investigated miRNA-mRNA regulatory network in substantia nagra and striatum of MSA transgenic mice in pre-motor stage of neurodegenration.

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Spiked human substantia nigra proteome data set for use as a spectral library for protein modelling and protein mapping

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Time Course of Gene Expression in the Substantia Nigra in Response to Intrastriatal 6-hydroxydopamine in the rat.

Project description:The 6-hydroxydopamine (6OHDA) rat model of parkinsonism is among the first, and most commonly used, animal models of Parkinson’s disease. It provides insight into the compensatory changes that occur in the brain after dopamine (DA) neuron degeneration. In order to better define the consequences of substantia nigra DA neuron loss on the neural and glial populations during and following nigrostriatal degeneration, tissue was collected and evaluated from the substantia nigra of 6OHDA or vehicle treated, or naïve rats at 1, 2, 4, 6 & 16 weeks. Comprehensive gene expression analysis was conducted to detect significant differences in gene expression. Comparisons were conducted within the same treatment groups over time as well as across treatments within the same post-treatment interval. Longitudinal expression patterns were parsed using a k-means clustering algorithm as a method for finding patterns indicative of neuronal loss, upregulation in response to lesion or surgical damage exclusive of lesion. Tissue was collected from the substantia nigra of 6OHDA treated, sham and naïve rats at 1, 2, 4, 6 & 16 weeks post-treatment. A unilateral striatal lesion was employed that results in a 99% striatal DA reduction and an 80% loss of DA neurons in the substantia nigra. 6OHDA lesions were confirmed via catecholamine quantitation by HPLC. RNA integrity was assessed with an Agilent 2100 Bioanalyzer with minimum RIN acceptance criteria of 8.0. Multidimensional plots and Pearson Correlations were used to establish group/treatment homogeneity. Tissue was subjected to comprehensive gene expression analysis using the Affymetrix Rat Gene 1.0ST array.

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Proteomic characterization of neuromelanin granules isolated from human substantia nigra by laser-microdissection

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2016-12-22 | PXD004987 | Pride

Transcription profiling of melanized domamine neurons isolated from male and female patients with Parkinson disease to investigate gender differences

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2008-01-19 | E-MEXP-1416 | biostudies-arrayexpress

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