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Series GSE18246 Query DataSets for GSE18246
Status Public on Jun 09, 2010
Title Gene expression changes induced by the human aristolochic acid I in renal and hepatic tissue of mice
Organism Mus musculus
Experiment type Expression profiling by array
Summary Aristolochic acid (AA) is the causative agent of urothelial tumours associated with aristolochic acid nephropathy and is also implicated in the development of Balkan endemic nephropathy-associated urothelial tumours. These tumours contain AA-characteristic TP53 mutations. We examined gene expression changes in Hupki (human TP53 knock-in) mice after treatment with aristolochic acid I (AAI) by gavage (5 mg/kg body weight). After 3, 12 and 21 days of treatment gene expression profiles were investigated using Agilent Whole Mouse 44K Genome Oligo Array. Expression profiles were significantly altered by AAI treatment in both target (kidney) and non-target (liver) tissue. Renal pathology and DNA adduct analysis confirmed kidney as the target tissue of AAI-induced toxicity. Gene ontology for functional analysis revealed that processes related to apoptosis, cell cycle, stress response, immune system, inflammatory response and kidney development were altered in kidney. Canonical pathway analysis indicated Nfkb, aryl hydrocarbon receptor, Tp53 and cell cycle signalling as the most important pathways modulated in kidney. Expression of Nfkb1 and other Nfkb-target genes was confirmed by quantitative real-time PCR (qRT-PCR) and was consistent with the induction of Nfkb1 protein. Myc oncogene, frequently over-expressed in urothelial tumours, was up-regulated by AAI on the microarrays and confirmed by qRT-PCR and protein induction. Collectively we found that microarray gene expression analysis is a useful tool to define tissue-specific responses in AAI-induced toxicity. Several genes identified such as TP53, Rb1, Mdm2, Cdkn2a and Myc are frequently affected in human urothelial cancer, and may be valuable prognostic markers in future clinical studies.

Keywords: Carcinogen treatment
Overall design Two-color Agilent array. A reference design was chosen that all samples were hybridised to universal mouse reference RNA (UMRR). 12-condition experiment (2 mouse organs: kidney and liver; 2 treatments: AAI and water; 3 time points: 3, 12 and 21 days). Three biological replicates for each condition. One replicate per array.
Contributor(s) Arlt VM, Zuo J, Trenz K, Roufosse CA, Lord GL, Nortier JL, Schmeiser HH, Hollstein M, Phillips DH
Citation(s) 20232387
Submission date Sep 24, 2009
Last update date Jan 12, 2017
Contact name Ian Giddings
Phone +44 20 8722 4293
Fax +44 20 8722 4141
Organization name Institute of Cancer Research
Department Section of Molecular Carcinogenesis
Lab CANCER RESEARCH UK DNA Microarray Facility
Street address 15 Cotswold Road
City Sutton
State/province Surrey
ZIP/Postal code SM2 5NG
Country United Kingdom
Platforms (1)
GPL7202 Agilent-014868 Whole Mouse Genome Microarray 4x44K G4122F (Probe Name version)
Samples (36)
GSM455894 Kidney AAI-treated 03 days replicate 1
GSM455895 Kidney AAI-treated 03 days replicate 2
GSM455896 Kidney AAI-treated 03 days replicate 3
BioProject PRJNA119637

Download family Format
SOFT formatted family file(s) SOFTHelp
MINiML formatted family file(s) MINiMLHelp
Series Matrix File(s) TXTHelp

Supplementary file Size Download File type/resource
GSE18246_RAW.tar 110.2 Mb (http)(custom) TAR (of TXT)
Processed data included within Sample table

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