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| Status |
Public on Jun 01, 2012 |
| Title |
Deep sequencing of small RNAs from Mouse brain during aging |
| Organism |
Mus musculus |
| Experiment type |
Non-coding RNA profiling by high throughput sequencing
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| Summary |
MicroRNAs (miRNAs) are endogenous small RNA molecules that regulate gene expression post-transcriptionally. Work in Caenorhabditis elegans has shown that specific miRNAs function in lifespan regulation and in a variety of age-associated pathways, but the roles of miRNAs in the aging of vertebrates are not well understood. We examined the expression of small RNAs in whole brains of young and old mice by deep sequencing and report here on the expression of 233 known miRNAs and identification of 41 novel miRNAs. Of these miRNAs, 75 known and 18 novel miRNAs exhibit greater than 2.0-fold expression changes. The majority of expressed miRNAs in our study decline in relative abundance in the aged brain, in agreement with trends observed in other miRNA studies in aging tissues and organisms. Target prediction analysis suggests that many of our novel aging-associated miRNAs target genes in the insulin signaling pathway, a central node of aging-associated genetic networks. These novel miRNAs may thereby regulate aging-related functions in the brain. Since mouse miRNAs are conserved in humans, the aging-affected brain miRNAs we report here may represent novel regulatory genes that function during aging in the human brain.
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| Overall design |
2 samples examined: Mouse brain from two young (5 months) and two old animals (24-25 months).
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| Contributor(s) |
de Lencastre A, Inukai S, Turner M, Slack F |
| Citation(s) |
22844398 |
| Submission date |
Dec 12, 2011 |
| Last update date |
Mar 08, 2019 |
| Contact name |
ALEXANDRE DE LENCASTRE |
| Organization name |
YALE UNIVERSITY
|
| Street address |
219 PROSPECT ST KBT 924
|
| City |
NEW HAVEN |
| ZIP/Postal code |
06511 |
| Country |
USA |
| |
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| Platforms (1) |
| GPL9185 |
Illumina Genome Analyzer (Mus musculus) |
|
| Samples (2) |
| GSM848188 |
Small RNAs from young mouse brain (5 months) |
| GSM848189 |
Small RNAs from aged mouse brain (24-25 months) |
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| Relations |
| BioProject |
PRJNA149571 |
