Dataset Information


Deregulated miRNAs in adrenocortical tumors

ABSTRACT: We performed miRNA expression profiling in a series of adrenocortical carcinomas, adrenocortical adenomas and normal adreno cortex using a microarray approach. Significant differentially expressed miRNAs among groups were identified using SAM analysis. Agilent microarray platform containing 903 miRNAs was used to determine miRNA expression profiles in 4 normal cortices, 26 adenomas and 22 adrenocortical carcinomas. SAM analysis was adopted to identify significant differentially expressed miRNAs between groups. SAM survival analysis was used to determine the association between miRNA expression and survival among carcinoma cases. The expression levels of candidate prognostic miRNAs were evaluated using qRT-PCR in the same cohort of adrenocortical carcinomas and association with survival was evaluated using Kaplan Meier curves and log rank tests.

ORGANISM(S): Homo sapiens  

SUBMITTER: Martin Bäckdahl   Stefano Caramuta  Pinar Akçakaya  Deniz Özata  Catharina Larsson  Xie Hong  David Velazquez-Fernandez  Jan Zedenius  Weng-Onn Lui 

PROVIDER: E-GEOD-22816 | ArrayExpress | 2011-06-01



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The role of microRNA deregulation in the pathogenesis of adrenocortical carcinoma.

Özata Deniz M DM   Caramuta Stefano S   Velázquez-Fernández David D   Akçakaya Pinar P   Xie Hong H   Höög Anders A   Zedenius Jan J   Bäckdahl Martin M   Larsson Catharina C   Lui Weng-Onn WO  

Endocrine-related cancer 20111027 6

Adrenocortical carcinoma (ACC) is an aggressive tumor showing frequent metastatic spread and poor survival. Although recent genome-wide studies of ACC have contributed to our understanding of the disease, major challenges remain for both diagnostic and prognostic assessments. The aim of this study was to identify specific microRNAs (miRNAs) associated with malignancy and survival of ACC patients. miRNA expression profiles were determined in a series of ACC, adenoma, and normal cortices using mic  ...[more]

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