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Whole genome transcriptional profile of PyMT/SIRT6 vs PyMT mammary tumors

ABSTRACT: We compared the transcriptional profile of mammary tumors spontaneously developed in PyMT transgenic mice either bearing or not additional copies of the endogeneous SIRT6 gene.

ORGANISM(S): Mus musculus

PROVIDER: GSE93837 | GEO | 2017/01/20

SECONDARY ACCESSION(S): PRJNA362573

REPOSITORIES: GEO

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Consequences of sEH deletion in the polyoma middle T (PyMT) breast cancer tumor proteome

Project description:The aim of this investigation was to study the consequences of interfering with soluble epoxide hydrolase (sEH) expression on tumor growth and metastasis in genetically modified animals that spontaneously generate tumors without the exogenous application of high concentrations of epoxide mediators or inhibitors. Therefore, breast cancer development was studied in mice expressing the polyoma middle T oncogene (PyMT) under the control of the mouse mammary tumor virus promoter, to induce spontaneous mammary tumors. To facilitate the study of endogenous sEH activity in tumor growth, PyMT mice were then crossed with sEH-/- mice to generate sEH-deficient mice that spontaneously generate breast tumors (so called PyMTsEH mice). For these analyses, primary tumors were removed from 20 week old mice.

2021-09-14 | PXD026214 | Pride

Gene expression profiles of the mammary gland tumors from Nr1d1+/+;PyMT and Nr1d1-/-;PyMT mice

Project description:To investigate the role of NR1D1 in the progression of breast cancer, mammary gland tumor tissues were obtained from 14 weeks old FVB Nr1d1+/+;PyMT and Nr1d1-/-;PyMT mice and the gene expression patterns were analyzed by RNA-seq.

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Differential Gene expression in the mouse mammary tumors of PyMT-Malat1 wild-type (WT), PyMT-Malat1 knockout (KO) and PyMT-Malat1 knockout with Malat1 transgene expression (TG)

Project description:Previously, lncRNA Malat1 knockout mice were generated by insertional inactivation. By crossing this line to MMTV-PyMT mammary tumor mouse model, we produced PyMT;Malat1 wild-type (WT) and PyMT;Malat1 knockout (KO). Furthermore, we generated Malat1 transgenic mice by targeting ROSA26 locus and bred them to PyMT;Malat1 knockout mice to produce Malat1-rescued PyMT;Malat1 knockout;Malat1 transgenic animals (TG). Using mammary tumors from the three groups of animals, we performed RNA-Seq analysis to identify differentially up-regulated genes in KO tumors to find novel target genes of YAP-TEAD pathway.

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Single cell RNA sequencing on PyMT mammary gland tumor cells

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Expression data of MMTV-PyMT mice mammary tumor with or without JAM-A

Project description:Junction Adhesion Molecule-A (JAM-A) is present on leukocytes and platelets where it promotes cell adhesion and motility. We are interested in an interaction between JAM-A and tumor progression/metastases. To address this point, we mated JAM-A-/- mice and mouse mammary tumor model MMTV-PyMT mice which, which express polyoma middle T antigen under the control of mouse mammary tumor virus. MMTV-PyMT mice show 100% penetration of mammary tumor and highly metastases to lung. MMTV-PyMT mice without JAM-A show less primary tumor progression, therefore JAM-A enhance primary tumor progression. Then we are addressing the molecular mechanism of this phenomenon by in vivo. Furthermore, we would like to examine JAM-A deficient MMTV tumor signature. Each 3 MMTV-PyMT JAm-A+/+ (JamA+) and 3 MMTV JAM-A-/- (JamA-) mammary tumor were resected at early stages of tumor development for RNA extraction and hybridization on Affymetrix microarrays.

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Expression data of MMTV-PyMT mice mammary tumor with or without JAM-A

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Next generation sequencing of neutrophils from WT, PyMT and PyMT-Cxcr2-/- mice

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Project description:In this study, through coupling of our ISDoT tissue decellularisation technology with quantitative mass spectrometry, we explored the changing tumour matrisome during mammary tumourigenesis in the PyMT breast cancer model compared to age-matched healthy control mammary gland

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Expression array of carcinoma cell Mmp14-targeted MMTV-PyMT mammary tumors

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Expression data from MMTV-PyMT Induced Tumors

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