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Transcriptome changes of endothelial cells in mouse breast tumors by STING activation II

ABSTRACT: In order to identify transciptomic changes of endothelial cells (Ecs) in response to STING activation, endothelial cells were soted using FACS and RNA-seq was performed. We compared ECs from 3 models; normal mammary fat pad, MMTV-PyMT spontaneous breast tumor, implanted breast tumor. Tumor cells derived from MMTV-PyMT spontaneous breast tumor were expanded on culture and implanted in mammary fat pad of female FVB mice to establish implanted breast tumor model.

ORGANISM(S): Mus musculus

PROVIDER: GSE159203 | GEO | 2020/10/28

REPOSITORIES: GEO

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Transcriptomic changes of tumor endothelial cells in spontaneous breast tumour model and implanted breast tumour model

Project description:To investigate the trancriptomic changes of tumor endothelial cells (ECs) in response to STING activation, tumor ECs from MMTV-PyMT mouse model or implanted breast tumour model were either treated by PBS or cGAMP were sorted by FACS and single-cell RNA seq was performed.

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Profiling protease and protease inhibitor gene expression in tumors and their microenvironment

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2008-07-20 | E-GEOD-6413 | biostudies-arrayexpress

Senescent stroma mediates immunosuppression and drives breast cancer progression [scRNA-seq]

Project description:Tumor-bearing mammary fat pads from MMTV-PyMT mice were digested with 2mg/mL Collagenase A and 2U/mL Dnase.

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Protein difference of breast cancer tissue in mice after radiation therapy and without radiation

Project description:In this study, radiation therapy was performed on mouse breast cancer spontaneous gene mice (MMTV-PyMT) to obtain radiation therapy model of breast cancer mice. To simulate clinical breast cancer radiotherapy and study the differential proteins of breast cancer radiotherapy resistance. MMTV-PyMT mice were randomly divided into two groups, and the radiotherapy group was given the same dose 5 times (3GY, once every 2 days) when the breast cancer tumor grew to an appropriate size (200mm3). The protein extracted from mouse tumor was analyzed by mass spectrometry.

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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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Effect of Spot14 Loss on Gene Expression Profile of MMTV-PyMT Mouse Tumors

Project description:The objective of this study was to determine the effect of Thyroid Hormone Responsive Protein Spot14 (Spot14) loss on the gene expression profiles of tumors from MMTV-Polyomavirus middle-T antigen (PyMT) mice. MMTV-PyMT/S14-heterozygous mice were crossed with S14-heterozygous mice and 1 cm tumors from MMTV-PyMT control (wild-type S14) or MMTV-PyMT/S14-null offspring were profiled using Affymetrix gene arrays. Tumor latency was not different between groups; however, tumors lacking S14 grew significantly slower than control tumors. Loss of S14 also decreased the levels of de novo synthesized fatty acids in mammary tumors. In additional studies, performed on MMTV-Neu mice, we found that S14 overexpression was associated with increased tumor cell proliferation and elevated levels of tumor fatty acids. Gene expression profiling revealed that S14 loss and overexpression in mouse mammary tumors altered pathways associated with proliferation and metabolism. This study provides important information about the role of S14 in mammary tumorigenesis and tumor metabolism. Microarray analysis was performed on 4 mammary tumors from MMTV-PyMT mice and 4 tumors from MMTV-PyMT/S14-null mice.

2014-09-01 | E-GEOD-55886 | biostudies-arrayexpress

Pleiotrophin drives a pro-metastatic immune niche within the breast tumor microenvironment

Project description:Here, we evaluated the effect of Pleiotrophin (PTN) depletion on tumor microenvironment. For this, we utilized a mouse monoclonal antibody against PTN, 3B10. We tested its therapeutic efficacy in 2 mouse breast cancer models, 4T1 (orthotopic, 4th mammary fat pad) and MMTV-PyMT (genetic model). Tumors from control IgG(C44) treated and 3B10 treated mice were sent for RNA sequencing to evaluate transcriptional changes. Additionally, PTN was knocked down in E0771 and E0771-LG syngeneic breast cancer lines. To evaluate transcriptional changes due to PTN depletion, shCtrl and PTN KD cells from E0771 and E0771-LG were evaluated by RNA sequencing. Overall, our results from these 4 sets of experiments show that depletion or blocking PTN results in inflammation related transcript changes suggesting function of PTN in immune regulation.

2023-02-16 | GSE200431 | GEO

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

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2021-09-14 | PXD026214 | Pride

Analysis of differentiation therapeutic approaches on murine breast cancer organoids

Project description:In this experiment, we have tested the effect of microRNA-203 as a potential differentiation inducer in breast cancer organoids, derived from the PyMT mouse model. MMTV-PyVT transgenic mice express the Polyoma Virus middle T antigen under the direction of the mouse mammary tumor virus promoter/enhancer. Hemizygous MMTV-PyMT females develop palpable mammary tumors which metastasize to the lung. These mice have high penetrance of early onset of mammary cancer compared to other mammary tumor models. PyMT mice were crossed with miR-203 knock-in mice, where miR-203 expression is induced upon DOX treatment. Thus, organoids derived from the mammary gland tumors of such mouse model where evaluated in vitro. miR-203 expression was therefore induced by Doxycycline in vitro, and compared to other well-defined differentiation media for breast cancer tissue, such as the mammary epithelial cell culture media and kit (CC-2551B; Lonza).

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Gene expression profiling of tumor cells and M2 macrophages from WT mice and mice with deletion of integrin beta3 in macrophage lineage cells (b3KOM)

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2015-12-11 | E-GEOD-75882 | biostudies-arrayexpress

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