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Age-mediated transcriptomic changes in adult mouse brain ventral tegmental area

ABSTRACT: Substantia nigra pars compacta (SNpc) is highly sensitive to normal aging and selectively degenerates in Parkinson's disease. However, ventral tegmental area (VTA), a region adjacent to SNpc, is less affected in PD. Until now, molecular mechanisms behind VTA aging have not been fully investigated using high throughput techniques. Here, aging-associated early changes in transcriptome of VTA were investigated comparing late middle-aged (18 months old) to young (2 months old) mice.

ORGANISM(S): Mus musculus

PROVIDER: GSE45044 | GEO | 2013/05/29

SECONDARY ACCESSION(S): PRJNA192891

REPOSITORIES: GEO

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Age-mediated transcriptomic changes in adult mouse brain ventral tegmental area

Project description:Substantia nigra pars compacta (SNpc) is highly sensitive to normal aging and selectively degenerates in Parkinson's disease. However, ventral tegmental area (VTA), a region adjacent to SNpc, is less affected in PD. Until now, molecular mechanisms behind VTA aging have not been fully investigated using high throughput techniques. Here, aging-associated early changes in transcriptome of VTA were investigated comparing late middle-aged (18 months old) to young (2 months old) mice. Three age groups of C57 wild type mice were used in microarray analysis: young (2 months old), middle aged (10 months old), and late-middle aged (18 months old) mice. Four replicates were included in each age group and each replicate was pooled from 5 mice (5 mice/replicate x 4 replicates x 3 age groups). Total RNA was isolated from VTA for hybridization on Affymetrix microarrays.

2013-05-29 | E-GEOD-45044 | biostudies-arrayexpress

Age-mediated transcriptomic changes in adult mouse substantia nigra

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RNA-SEQ profiling of dopaminergic neurons from the substantia nigra pars compacta and ventral tegmental area regions of the mouse mid-brain

Project description:RNA-SEQ profiling of dopaminergic neurons from the substantia nigra pars compacta and ventral tegmental area regions of the mouse mid-brain Murine midbrain dopaminergic neurons from the SNpc and VTA regions

2015-07-27 | E-GEOD-64452 | biostudies-arrayexpress

Age-mediated transcriptomic changes in adult mouse substantia nigra

Project description:Substantia nigra pars compacta (SNpc) is highly sensitive to normal aging and selectively degenerates in Parkinson's disease. Until now, molecular mechanisms behind SNpc aging have not been fully investigated using high throughput techniques. Here, aging-associated early changes in transcriptome of SNpc were investigated comparing late middle-aged (18 months old) to young (2 months old) mice. Three age groups of C57 wild type mice were used in microarray analysis: young (2 months old), middle aged (10 months old), and late-middle aged (18 months old) mice. Four replicates were included in each age group and each replicate was pooled from 4 mice (4 mice/replicate x 4 replicates x 3 age groups). Total RNA was isolated from SNpc for hybridization on Affymetrix microarrays.

2013-05-29 | E-GEOD-45043 | biostudies-arrayexpress

Transcription profiling of dopaminergic neurons of the substantia nigra pars compacta (SNc) and the ventral tegmental area from normal rats

Project description:The cardinal clinical features of Parkinson's disease result from selective loss of midbrain dopaminergic neurons. The goal of this experiment is to determine the gene expression profiles of these neurons by studying untreated rat substantia nigra pars compacta (SNc) and ventral tegmental area (VTA) dopaminergic neurons using laser capture microscopy to obtain region-specific neuronal mRNA.

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RNA-SEQ profiling of dopaminergic neurons from the substantia nigra pars compacta and ventral tegmental area regions of the mouse mid-brain

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Parkinson's disease mouse brain proteome profiling

Project description:We compared the proteome from a vulnerable region (Substantia nigra pars compacta, SNc) of wild-type and Parkinsonian mice to that of an adjacent, less vulnerable, region (Ventral tegmental area, VTA) and identified several proteins which exhibited both spatiotemporal- and genotype-restricted changes.

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Project description:We performed transcriptome analysis using RNA sequencing on substantia nigra pars compacta (SNpc) from mice after acute and chronic 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) treatment and Parkinson’s disease (PD) patients.

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Cumulative low doses of the organic pesticide rotenone in the adult rat substantia nigra pars compacta

Project description:Adult male Sprague Dawley rats (5 month-old at the beginning of the study) were subcutaneously exposed to 0.5 mg.kg/d rotenone or the corresponding solvent (PEG/DMSO, 1/1) for 28 days. At the end of the experiment, animals were sacrificed by decapitation and brains were rapidly taken out within 30-40 s. Total RNA was prepared from laser-capture microdissected rat substantia nigra pars compacta (Snpc). Changes in transcript abundance within SNpc were analyzed on samples from solvent and rotenone-exposed groups (n = 3 per group) using CodeLinkâ¢ Rat Whole Genome bioarrays containing 34,000 transcripts and EST probes (GE Healthcare, Amersham, Saclay, France). Two groups of rats were exposed either to rotenone (CR rats) or to solvents (CS rats) in order to analyse pesticides impact on gene expression.

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