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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Transcriptomic analysis investigating the role of TNC in tumor progression using the MMTV-NeuNT mouse model

ABSTRACT: MMTV-NeuNT transgenic mouse model harbors an activated form of Neu (NeuNT). Mice develop stochastically multifocal mammary adenocarcinomas that metastasize to the lung (Muller et al., 1988). MMTV-NeuNT mouse model exhibits both intravascular and parenchymal metastasis which provides a good tool to comprehensively study breast cancer metastasis. In this study, we investigated the role of TNC in tumor progression using the MMTV-NeuNT mouse model. (3 MMTV-NeuNT TNC WT v/s 3 MMTV-NeuNT TNC KO). Breast tumor tissue were collected 3 months after first tumor palpation.

INSTRUMENT(S): affymetrix

ORGANISM(S): Mus musculus

SUBMITTER: Raphael Carapito

PROVIDER: E-MTAB-10149 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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RNA sequencing investigating the role of TNC in tumor progression using FVB TNC WT and TNC KO mice grafted with NT193 shC cells or NT193 shTNC cells

Project description:MMTV-NeuNT transgenic mouse model harbors an activated form of Neu (NeuNT). Mice develop stochastically multifocal mammary adenocarcinomas that metastasize to the lung (Muller et al., 1988). MMTV-NeuNT mouse model exhibits both intravascular and parenchymal metastasis which provides a good tool to comprehensively study breast cancer metastasis. In this study, we investigated the role of tenascin C (TNC) in tumor progression using the a syngeneic orthotopic grafting mouse model. NT193 cell line was isolated from MMTV-NeuNT TNC WT tumor tissue. TNC expression in these cells was turned down through shRNA strategy, giving rise to NT193 shTNC cells and their respective control NT193 shcTNC. These cells were grafted orthotopically into syngeneic FVB mice either WT or KO for TNC. In FVB WT mice, NT193 shcTNC tissue was treated with AMD3100 (plerixafor) (Sigma, A5602) at 5 mg/kg/day by peritumoral injection for 2 weeks before processing with NT193 shcTNC and NT193 shTNC tissue receiving phosphate buffered saline as a control.

2021-03-25 | E-MTAB-10135 | biostudies-arrayexpress

Characterization of Chemotherapy-treated PyMT Liver Matrisome

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2022-10-05 | PXD036736 | Pride

Differentiation of Mammary Tumors and Reduction in Metastasis Upon Malat1 LncRNA Loss

Project description:Genome-wide analyses have identified thousands of long non-coding RNAs (lncRNAs). Malat1 (Metastasis Associated Lung Adenocarcinoma Transcript 1) is among the most abundant lncRNAs whose expression is altered in numerous cancers. Here we report that genomic loss, as well as systemic knockdown of Malat1 using antisense oligonucleotides, in the MMTV-PyMT mouse mammary carcinoma model results in slower tumor growth accompanied by differentiation into highly cystic tumors and a significant reduction in lung metastasis. Further, Malat1 loss results in a reduction of branching morphogenesis in MMTV-PyMT and Her2/neu amplified tumor organoids consistent with the in vivo reduction in lung metastasis. At the molecular level, Malat1 knockdown results in alterations in gene expression and changes in splicing patterns of genes involved in differentiation and pro-tumorigenic signaling pathways. Together, these data indicate that the lncRNA Malat1 regulates critical processes in mammary cancer pathogenesis and represents a promising therapeutic target for inhibiting breast cancer metastasis. Transcriptome profiles of tumors and organoids after Malat1 knockdown using antisense olgonucleotides (ASOs).

2016-01-12 | E-GEOD-67647 | biostudies-arrayexpress

Activation of ER-alpha network in MMTV-Wnt/ILK mammary tumors

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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.

2010-10-01 | E-GEOD-22555 | biostudies-arrayexpress

Effects of tenascin-C on gene expression in mouse mammary gland tumor

Project description:Tenascin-C (TNC), a cancer-associated extracellular matrix glycoprotein, plays a pivotal role in tumor growth. However, the mechanism whereby TNC affects tumor biology remains unclear. We used microarrays to investigate change in global gene expression between tumors in wild-type (WT) mice, which express TNC, and tumors in TNC-knockout (TNKO) mice. We developed a non-TNC-producing mouse mammary tumor cell line (GLMT1). GLMT1 was inoculated in the drosal flank of WT mice and TNKO mice. After 14 days, the tumor were harvested and RNA was extracted. Subsequently, they were processed and hybridized on Affymetrix GeneChip Mouse Genome 430 2.0 Array

2016-02-10 | E-GEOD-77739 | biostudies-arrayexpress

Biomarkers of residual disease, disseminated tumor cells, and metastases in the MMTV-PyMT breast cancer model

Project description:Gene expression profiling of disseminated tumor cells in lung, lung metastatses and residual tumor cells in the MMTV-PyMT breast cancer model. Profiling gene expression change between disseminated tumor cells, lung metastases and residual tumor cells from the MMTV-PyMT breast cancer model.

2013-01-18 | E-GEOD-43566 | biostudies-arrayexpress

E-MTAB-10149

Project description:Transcriptomic analysis investigating the role of TNC in tumor progression using the MMTV-NeuNT mouse model

2023-06-15 | E-MTAB-10149 | ExpressionAtlas

Expression data from murine PBCs from mice with advanced mammary tumors and their tumor-free counterparts.

Project description:Female MMTV/c-MYC transgenic mice expressed the c-MYC proto-oncogene or a more stable point mutation variant (T58A) of the gene under the control of the hormone-responsive MMTV long terminal repeat (LTR) in an FVB/NJ background (Jackson Laboratories, Bar Harbor, ME). The hormones released during pregnancy and lactation have been shown to enhance expression of the oncogene. Thus, the mice were maintained in a continuous breeding program. Mice were monitored twice weekly for tumor development by palpation and tumors were measured twice weekly. Once the tumors reached 3cm3 the animals were sacrificed and tissue was obtained to confirm the tumors by histological analysis. As a control, female mice of the same age and background strain were maintained in the same facility and under the same breeding conditions as their transgenic counterparts.

2011-03-01 | GSE27563 | GEO

Project description:We previously identified a novel SNF1/AMPK-related protein kinase, Hunk, from a mammary tumor arising in an MMTV-neu transgenic mouse. The function of this kinase is unknown. Using targeted deletion in mice, we now demonstrate that Hunk is required for the metastasis of c-myc-induced mammary tumors, but is dispensable for normal development. Reconstitution experiments revealed that Hunk is sufficient to restore the metastatic potential of Hunk-deficient tumor cells, as well as defects in migration and invasion, and does so in a manner that requires its kinase activity. Consistent with a role for Hunk in the progression of human cancers, the human homologue of Hunk is overexpressed in aggressive subsets of carcinomas of the ovary, colon, and breast. In addition, a murine gene expression signature that distinguishes Hunk-wild type from Hunk-deficient mammary tumors predicts clinical outcome in women with breast cancer. Together, these findings establish a role for Hunk in metastasis and an in vivo function for this kinase. Hunk-deficient animals were crossed to mice harboring an MMTV-c-myc transgene (Leder et al., 1986). Hunk heterozygous, MMTV-c-myc mice were backcrossed to Hunk heterozygous animals. MMTV-c-myc female animals of each Hunk genotype were mated twice, then monitored twice weekly for mammary tumors. Mice possessing tumors with a maximum diameter of 20 mm were sacrificed and organs were examined at necropsy. Tumor nodules were identified by examination of organs through a Leica Wild MZ8 dissection microscope.

2009-12-31 | E-GEOD-14226 | biostudies-arrayexpress

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