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Title: Proliferation and Tumorigenesis of a Murine Sarcoma Cell Line in the Absence of Dicer      
dateReleased:
08-20-2012
description:
MicroRNAs are a class of short ~22 nucleotide RNAs predicted to regulate nearly half of all protein-coding genes, including many involved in basal cellular processes and organismal development. Although both increases and decreases in the levels of specific miRNAs have been shown to promote tumor development, a global reduction in miRNAs is commonly observed in various human tumors. However, complete loss has not been documented, suggesting an essential function for miRNAs in tumorigenesis. Here we present the finding that transformed or immortalized Dicer-null somatic cells can be isolated readily in vitro, maintain the characteristics of Dicer-expressing controls and remain stably proliferative. Furthermore, Dicer-null cells from a sarcoma cell line, though depleted of miRNAs, are competent for tumor formation. Hence, miRNA levels in cancer may be maintained in vivo by a complex stabilizing selection in the intratumoral environment. Small RNAs from tumor cell lines (murine sarcoma KrasG12D, p53 -/-) with and without Dicer (Dicer f/-, Dicer -/-) were analyzed.
privacy:
not applicable
aggregation:
instance of dataset
ID:
E-GEOD-34825
refinement:
raw
alternateIdentifiers:
34825
keywords:
functional genomics
dateModified:
09-26-2012
availability:
available
types:
gene expression
name:
Mus musculus
accessURL: https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-34825/E-GEOD-34825.raw.1.zip
storedIn:
ArrayExpress
qualifier:
gzip compressed
format:
TXT
accessType:
download
authentication:
none
authorization:
none
accessURL: https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-34825/E-GEOD-34825.processed.1.zip
storedIn:
ArrayExpress
qualifier:
gzip compressed
format:
TXT
accessType:
download
authentication:
none
authorization:
none
accessURL: https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE34825
storedIn:
Gene Expression Omnibus
qualifier:
not compressed
format:
HTML
accessType:
landing page
primary:
true
authentication:
none
authorization:
none
abbreviation:
EBI
homePage: http://www.ebi.ac.uk/
ID:
SCR:004727
name:
European Bioinformatics Institute
homePage: https://www.ebi.ac.uk/arrayexpress/
ID:
SCR:002964
name:
ArrayExpress

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