GSM1547894[Accession] - GEO DataSets

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Items: 3

Select item 2000633861.

BCL11A is a triple-negative breast cancer gene with critical functions in stem and progenitor cells

(Submitter supplied) Triple negative breast cancer (TNBC) has poor prognostic outcome compared to other types of breast cancer1. At present the molecular and cellular mechanisms underlying TNBC pathology are not well understood1. Here we report that the transcription factor BCL11A is overexpressed in TNBC including basal-like breast cancer (BLBC) and that its genomic locus is amplified in up to 38% of BLBC tumours. BCL11A overexpression in immortalised human breast epithelial cells promotes tumour formation in xenograft models, whereas knockdown of BCL11A in TNBC cell lines suppresses their tumourigenic potential. In the DMBA-induced mouse mammary tumour model, Bcl11a is found to be essential for tumourigenesis since deletion of Bcl11a before DMBA treatment substantially decreases tumour formation, even in p53-null cells, and inactivation of Bcl11a in established tumours causes their regression. At the cellular level, BCL11A overexpression enhances clonogenicity in vitro whereas its deletion in the mouse causes a reduction in the number of mammary epithelial stem and progenitor cells. Thus, BCL11A has an important role in the genesis of TNBC and in normal mammary epithelial cells. This study highlights the importance of further investigation of BCL11A in breast cancer diagnosis and targeted therapies.

Organism:: Mus musculus; Homo sapiens

Type:: Expression profiling by array

Platforms:: GPL10904 GPL18752
7 Samples

Download data: TXT

Series

Accession:: GSE63386

ID:: 200063386

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Select item 1000187522.

Illumina MouseWG-6 v2.0 expression beadchip [gene symbol version]

(Submitter supplied) The MouseWG-6 v2.0 Expression BeadChip offer the most up-to-date content for whole-genome expression profiling in the mouse. Featuring content derived from the National Center for Biotechnology Information Reference Sequence (NCBI RefSeq) database (Build 36, Release 22). Please use the GEO Data Submission Report Plug-in v1.0 for Gene Expression which may be downloaded from https://icom.illumina.com/icom/software.ilmn?id=234 to format the normalized and raw data. more...