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Transcriptional profiling of indolent and aggressive mammary lesions

ABSTRACT: We performed transcriptional profiling of tumor cells from indolent and aggressive lesions isolated from a mouse model of breast cancer. To initiate formation of mammary lesions, we delivered lentiviral particles carrying constitutively-activated Erbb2 tagged with HA and GFP (caErbB2) through the lactiferous glands of adult virgin female. Mammary glands bearing lesions were visualized under a fluorescence stereoscope, and regions harboring aggressive (>2mm, comprised of invasive lesions) and indolent (<2mm, enriched for in situ lesions) lesions were dissected away from each other. Lesions from multiple animals were pooled to obtain sufficient material for downstream analysis. Following tissue digestion, GFP-expressing epithelial cells were isolated by fluorescence-activated cell sorting (FACS), and then subjected to bulk RNA-seq.

ORGANISM(S): Mus musculus

PROVIDER: GSE162005 | GEO | 2021/06/17

REPOSITORIES: GEO

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