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Title: Human glioblastoma cells: Tet-on(mutant p53 R175H expression) vs Tet-off(p53-null)      
dateReleased:
11-02-2011
description:
TP53 R175H mutation is one of the most common mutations in human cancers and cancer cells with this mutation stably express R175H protein in the nucleus. To identify the synthetic lethal gene interacted with the R175H, we conducted the high throughput screening by using tetracyclin inducible R175H expression system in SF126 cells and comprehensive shRNA library carried by lenti virus. We identified 906 candidate gene suppressions that may lead to accelerated cell growth inhibition under the presence of R175H. Inhibitor of differentiation 1 (ID1) was one of the candidate genes and suppression of ID1 by siRNA resulted in acceleration of growth inhibition of cell lines expressing endogenous R175H but not in TP53 null cell lines. The transient expression of R175H in TP53 null cell lines and suppression of ID1 and/or TP53 R175H in cell lines with endogenous R175H revealed that the cell growth inhibition by ID1 suppression was dependent on R175H expression but not other common p53 mutants (R273H). Flow cytometric (FACS) analysis exhibited that ID1 suppression resulted in G1 arrest and the arrest was accelerated by suppression of R175H. In conclusion, ID1 is a synthetic lethal gene interacted with R175H and is considered to be a novel molecular target of cancer therapy for R175H expressing cells. R175H expression(Tet-on) group was labeled by Cy5, and p53-null(Tet-off) group was labeled by Cy3. Three independent experiments were conducted (We have triplicate data).
privacy:
not applicable
aggregation:
instance of dataset
ID:
E-GEOD-33362
refinement:
raw
alternateIdentifiers:
33362
keywords:
functional genomics
dateModified:
05-03-2014
availability:
available
types:
gene expression
name:
Homo sapiens
ID:
A-GEOD-14820
name:
Decode RNAi Viral Screening Library - Human GIPZ Lentiviral shRNAmir
accessURL: https://www.ebi.ac.uk/arrayexpress/files/E-GEOD-33362/E-GEOD-33362.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-33362/E-GEOD-33362.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=GSE33362
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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