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Primary Mammary Epithelial Cells: Control vs 1023-Treated

ABSTRACT: Gene expression profiling of primary mammary epithelial cells treated for 72 hours with compound 1023 compared to DMSO. Goal was to determine genes differntially regulated by treatment with the novel compound, 1023.

ORGANISM(S): Mus musculus

PROVIDER: GSE39249 | GEO | 2012/12/31

SECONDARY ACCESSION(S): PRJNA170342

REPOSITORIES: GEO

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Primary Mammary Epithelial Cells: Control vs 1023-Treated

Project description:Gene expression profiling of primary mammary epithelial cells treated for 72 hours with compound 1023 compared to DMSO. Goal was to determine genes differntially regulated by treatment with the novel compound, 1023. Two-condition experiment, DMSO vs. 1023. Biological replicates: 2 control replicates, 2 1023 replicates.

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Project description:The goal of this experiment was to identify genes that were expressed at higher levels in benign human mammary epithelial cells than in breast cancer cell lines and that were induced by 5AZA treatment in breast cancer cell lines. Six breast cancer cell lines were selected for demethylation studies based on known tumor suppressor gene expression regulation by promoter region hypermethylation: HCC1569 (CCND2), HCC1954 (SCGB3A1, APC, RASSF1A), MCF-7 (RAR-beta2), MDA-MB-231 (ESR1), UACC3199 (BRCA1), and BT-549 (hypermethylator phenotype). Other than MCF10A we specifically avoided immortalized benign human mammary epithelial cell lines for this experiment as these cells frequently show tumor suppressor gene methylation (e.g. p16) and gene expression profiles that are intermediate between normal breast epithelial cells and breast cancer. Instead, we opted to test six first-passage benign human mammary epithelial cell cultures (HME) generated in serum-free media from small fragments of normal breast tissue obtained from young women undergoing fibroadenoma excision. The 5AZA dose (0.5 microM) was selected based on evaluation of growth curves and induction of BNC1, SERPINB, and TKTL1 gene expression measured by RT-PCR in benign and malignant cells. The breast cancer cell lines, HME cultures, and MC10A cells were treated with 0.5 microM 5AZA (Sigma-Aldrich, St. Louis, MO) in DMSO or DMSO alone for six days after which the cells were harvested, and RNA prepared using the Illumina TotalPrep kit (AMIL1791, Life Technologies, Grand Island, NY). Whole genome expression was assessed using the Illumina HumanWG-6-v3 chip Gene expression was evaluated in 6 breast cancer cell lines, 6 primary breast epithelial cell cultures, and MCF10A cells after 6 days in DMSO or DMSO plus 0.5 microM 5AZA.

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Project description:Human mammary epithelial cells sorted by cell cycle

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Mouse mammary epithelial and stromal cells: Hormone Treated vs. Vehicle Control

Project description:Transcriptional profiling of different mouse mammary cellular compartments (basal, luminal and stromal) under define hormone treatments: estrogen, progesterone, estrogen plus progesterone and the vehicle control. Goal was to determine the effect of ovarian hormones on mammary cellular compartment gene expression.

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