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Integration of BRCA1-mediated miRNA and mRNA signatures reveal miR-146a, miR-99b and miR-205 regulation of the TRAF2 and NFkB pathways (mRNA dataset)

ABSTRACT: BRCA1 deregulation is a frequent event in the pathogenesis of breast as well as other cancers. In addition to the DNA repair functions of BRCA1, it is involved in a wide range of cellular processes such as cell cycle, chromatin remodeling or transcription. However, the molecular events underlying BRCA1-associated tumorigenesis are still largely unknown. In order to deepen our understanding of BRCA1-associated tumorigenesis, we integrated data from mRNA and miRNA microarray experiments on the HCC1937 breast cancer cell line, and the isogenic HCC1937 stably expressing BRCA1, to obtain significant miRNA-mRNA relationships associated to the presence of the BRCA1 gene. Our results demonstrate that integration of mRNA and miRNA associated to BRCA1 expression was useful to discover new miRNA-gene interactions as molecular events underlying BRCA1-mediated tumorigenesis.

ORGANISM(S): Homo sapiens

PROVIDER: GSE30821 | GEO | 2011/12/24

SECONDARY ACCESSION(S): PRJNA154567

REPOSITORIES: GEO

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Integration of BRCA1-mediated miRNA and mRNA signatures reveal miR-146a, miR-99b and miR-205 regulation of the TRAF2 and NFkB pathways (mRNA dataset)

Project description:BRCA1 deregulation is a frequent event in the pathogenesis of breast as well as other cancers. In addition to the DNA repair functions of BRCA1, it is involved in a wide range of cellular processes such as cell cycle, chromatin remodeling or transcription. However, the molecular events underlying BRCA1-associated tumorigenesis are still largely unknown. In order to deepen our understanding of BRCA1-associated tumorigenesis, we integrated data from mRNA and miRNA microarray experiments on the HCC1937 breast cancer cell line, and the isogenic HCC1937 stably expressing BRCA1, to obtain significant miRNA-mRNA relationships associated to the presence of the BRCA1 gene. Our results demonstrate that integration of mRNA and miRNA associated to BRCA1 expression was useful to discover new miRNA-gene interactions as molecular events underlying BRCA1-mediated tumorigenesis. Transcriptional profiling of the BRCA1-null HCC1937 cell line and HCC1937 cells after stable transfection of BRCA1. Two-condition experiment: Universal Human Reference RNA (Stratagene, catalog #740000) (Cy3) vs. cell line (Cy5). Biological replicates: 3 HCC1937, 3 BRCA1-transfected HCC1937 cells.

2011-12-24 | E-GEOD-30821 | biostudies-arrayexpress

Integration of BRCA1-mediated miRNA and mRNA signatures reveal miR-146a, miR-99b and miR-205 regulation of the TRAF2 and NFkB pathways (miRNA dataset)

Project description:Microarray‐based techniques are being used to obtain miRNA and gene expression signatures associated with different samples. In order to deepen our understanding of BRCA1-associated tumorigenesis, we integrated data from microarray experiments to obtain significant miRNA-mRNA relationships associated with the presence of the BRCA1 gene. We obtained significant miRNA-gene-pathway relationships underlying the array signatures. Furthermore, we have demonstrated that miR-146a, miR-99b and miR-205, induced in HCC1937 BRCA1-expressing cells, commonly regulate the TRAF2 gene, a key regulator of NF-κB and MAPK pathways. In addition, re-expression of miR-146a, miR-99b or miR-205 in HCC1937 BRCA1-null cells was sufficient to modulate NF-κB activity. Thus, integration between miRNA-mRNA expression data allowed us to define genes and pathways controlled by miRNAs induced in the context of BRCA1 expression.

2011-12-24 | GSE30763 | GEO

Integration of BRCA1-mediated miRNA and mRNA signatures reveal miR-146a, miR-99b and miR-205 regulation of the TRAF2 and NFkB pathways (miRNA dataset)

Project description:Microarray?based techniques are being used to obtain miRNA and gene expression signatures associated with different samples. In order to deepen our understanding of BRCA1-associated tumorigenesis, we integrated data from microarray experiments to obtain significant miRNA-mRNA relationships associated with the presence of the BRCA1 gene. We obtained significant miRNA-gene-pathway relationships underlying the array signatures. Furthermore, we have demonstrated that miR-146a, miR-99b and miR-205, induced in HCC1937 BRCA1-expressing cells, commonly regulate the TRAF2 gene, a key regulator of NF-?B and MAPK pathways. In addition, re-expression of miR-146a, miR-99b or miR-205 in HCC1937 BRCA1-null cells was sufficient to modulate NF-?B activity. Thus, integration between miRNA-mRNA expression data allowed us to define genes and pathways controlled by miRNAs induced in the context of BRCA1 expression. Comparison of miRNA expression profiles between two isogenic cell lines differing in BRCA1 gene expression status. Single-color experiments in a pairwise comparison design with three technical replicates per cell line.

2011-12-24 | E-GEOD-30763 | biostudies-arrayexpress

Integration of BRCA1-mediated miRNA and mRNA signatures reveal miR-146a, miR-99b and miR-205 regulation of the TRAF2 and NFkB pathways

Project description:This SuperSeries is composed of the following subset Series: GSE30763: Integration of BRCA1-mediated miRNA and mRNA signatures reveal miR-146a, miR-99b and miR-205 regulation of the TRAF2 and NFkB pathways (miRNA dataset) GSE30821: Integration of BRCA1-mediated miRNA and mRNA signatures reveal miR-146a, miR-99b and miR-205 regulation of the TRAF2 and NFkB pathways (mRNA dataset) Refer to individual Series

2011-12-24 | E-GEOD-30822 | biostudies-arrayexpress

Integration of BRCA1-mediated miRNA and mRNA signatures reveal miR-146a, miR-99b and miR-205 regulation of the TRAF2 and NFkB pathways

| S-ECPF-GEOD-30822 | biostudies-other

Integration of BRCA1-mediated miRNA and mRNA signatures reveal miR-146a, miR-99b and miR-205 regulation of the TRAF2 and NFkB pathways (miRNA dataset)

| S-ECPF-GEOD-30763 | biostudies-other

Integration of BRCA1-mediated miRNA and mRNA signatures reveal miR-146a, miR-99b and miR-205 regulation of the TRAF2 and NFkB pathways (mRNA dataset)

| S-ECPF-GEOD-30821 | biostudies-other

Integration of BRCA1-mediated miRNA and mRNA signatures reveal miR-146a, miR-99b and miR-205 regulation of the TRAF2 and NFkB pathways

Project description:This SuperSeries is composed of the SubSeries listed below.

2011-12-24 | GSE30822 | GEO

The Anticancer Mechanism of the Ribonucleotide Reductase Inhibiting Drug COH29 Involves Suppression of DNA Repair

Project description:Mechanism of Action Study for COH29 Compare COH29 treatment in DNA-repair deficient cell line with truncated BRCA1 (HCC1937) versus phenotypically normal cell line with exogenous WT BRCA1 expression (HCC1937+BRCA1)

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Project description:In order to identify new targets for basal-like breast cancers, we performed Methyl-Seq of 10 breast cancer cell lines. Basal-like cell lines (MDAMB231, MDAMB436, HCC1937, SUM149, SUM1315 and MCF10A) were compared to luminal cell lines (MCF7 and T47D). Moreover we could also study BRCA1 influence on methylome of basal-like breast cancer. 4 of our cell lines are indeed BRCA1 mutated (MDAMB436, HCC1937, SUM149 and SUM1315) and we also developed 2 cell lines that come from the BRCA1 mutated SUM1315 cell line stably transfected with empty LXSN plasmid (SUM1315-LXSN) or with a BRCA1 coding plasmid (SUM1315-BRCA1).

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