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A Syngeneic ErbB2 Mammary Cancer Model for Preclinical Immunotherapy Trials

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Mus musculus

PROVIDER: GSE113380 | GEO | 2019/03/03

REPOSITORIES: GEO

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A Syngeneic ErbB2 Mammary Cancer Model for Preclinical Immunotherapy Trials.

Project description:In order to develop a practical model of breast cancer, with in vitro and syngeneic, immune-intact, in vivo growth capacity, we established a primary cell line derived from a mammary carcinoma in the transgenic FVB/N-Tg(MMTV-ErbB2*)NDL2-5Mul mouse, referred to as "NDLUCD". The cell line is adapted to standard cell culture and can be transplanted into syngeneic FVB/N mice. The line maintains a stable phenotype over multiple in vitro passages and rounds of in vivo transplantation. NDLUCD tumors in FVB/N mice exhibit high expression of ErbB2 and ErbB3 and signaling molecules downstream of ErbB2. The syngeneic transplant tumors elicit an immune reaction in the adjacent stroma, detected and characterized using histology, immunophenotyping, and gene expression. NDLUCD cells also express PD-L1 in vivo and in vitro, and in vivo transplants are reactive to anti-immune checkpoint therapy with responses conducive to immunotherapy studies. This new NDLUCD cell line model is a practical alternative to the more commonly used 4T1 cells, and our previously described FVB/N-Tg(MMTV-PyVT)634Mul derived Met-1fvb2 and FVB/NTg(MMTV-PyVTY315F/Y322F) derived DB-7fvb2 cell lines. The NDLUCD cells have, so far, remained genetically and phenotypically stable over many generations, with consistent and reproducible results in immune intact preclinical cohorts.

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A Syngeneic ErbB2 Mammary Cancer Model for Preclinical Immunotherapy Trials [microarray]

Project description:A cell line was derived from a mammary carcinoma in the transgenic FVB/N-Tg(MMTV-ErbB2)NDL2-5Mul mouse. The line, referred to as “NDL(UCD)” is adapted to standard cell culture and can be transplanted into syngeneic FVB/N mouse. The line maintains stable phenotype over multiple in vitro passages and rounds of in vivo transplantation. The cell line exhibits high expression of ErbB2 and ErbB3 and signaling molecules downstream ErbB2. The line was previously shown to be reactive to anti-immune checkpoint therapy with responses conducive to immunotherapy studies. Here, using both histology/immunophenotyping and gene expression/microarray analysis, we show that the syngeneic transplant tumors elicit an immune reaction in the adjacent stroma, with additional tumor infiltrating lymphocytes. We also show that this immune activating effect is greater in the syngeneic transplants than in the tumors arising in the transgenic mouse. We further analyzed the PD-1 and PD-L-1 expression in the model and found strong PD-L1 expression in the tumors and in vitro. Three distinct transplantable syngenic mouse models of mammary carcinoma were compared to identify differentially expressed genes.

2019-03-06 | GSE112723 | GEO

A Syngeneic ErbB2 Mammary Cancer Model for Preclinical Immunotherapy Trials [RNA-seq]

Project description:A cell line was derived from a mammary carcinoma in the transgenic FVB/N-Tg(MMTV-ErbB2)NDL2-5Mul mouse. The line, referred to as “NDL(UCD)” is adapted to standard cell culture and can be transplanted into syngeneic FVB/N mice. The line maintains a stable phenotype over multiple in vitro passages and rounds of in vivo transplantation. The cell line exhibits high expression of ErbB2 and ErbB3 and signaling molecules downstream from ErbB2. The line was previously shown to be reactive to anti-immune checkpoint therapy with responses conducive to immunotherapy studies. Here, using both histology/immunophenotyping and gene expression/microarray analysis, we show that the syngeneic transplant tumors elicit an immune reaction in the adjacent stroma, with additional tumor infiltrating lymphocytes. We also show that this immune activating effect is greater in the syngeneic transplants than in the primary tumors arising in the native transgenic mouse. We further analyzed the PD-1 and PD-L-1 expression in the model and found PD-L1 expression in the tumors and in vitro. In conclusion these data document the validity and utility of this cell line for in vivo preclinical immunotherapy trials.

2019-03-06 | GSE113379 | GEO

A Syngeneic ErbB2 Mammary Cancer Model for Preclinical Immunotherapy Trials

Project description:A Syngeneic ErbB2 Mammary Cancer Model for Preclinical Immunotherapy Trials

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A Syngeneic ErbB2 Mammary Cancer Model for Preclinical Immunotherapy Trials [microarray]

Project description:A Syngeneic ErbB2 Mammary Cancer Model for Preclinical Immunotherapy Trials [microarray]

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A Syngeneic ErbB2 Mammary Cancer Model for Preclinical Immunotherapy Trials [RNA-seq]

Project description:A Syngeneic ErbB2 Mammary Cancer Model for Preclinical Immunotherapy Trials [RNA-seq]

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A murine preclinical syngeneic transplantation model for breast cancer precision medicine.

Project description:We previously demonstrated that altered activity of lysophosphatidic acid in murine mammary glands promotes tumorigenesis. We have now established and characterized a heterogeneous collection of mouse-derived syngeneic transplants (MDSTs) as preclinical platforms for the assessment of personalized pharmacological therapies. Detailed molecular and phenotypic analyses revealed that MDSTs are the most heterogeneous group of genetically engineered mouse models (GEMMs) of breast cancer yet observed. Response of MDSTs to trametinib, a mitogen-activated protein kinase (MAPK) kinase inhibitor, correlated with RAS/MAPK signaling activity, as expected from studies in xenografts and clinical trials providing validation of the utility of the model. Sensitivity of MDSTs to talazoparib, a poly(adenosine 5'-diphosphate-ribose) polymerase (PARP) inhibitor, was predicted by PARP1 protein levels and by a new PARP sensitivity predictor (PSP) score developed from integrated analysis of drug sensitivity data of human cell lines. PSP score-based classification of The Cancer Genome Atlas breast cancer suggested that a subset of patients with limited therapeutic options would be expected to benefit from PARP-targeted drugs. These results indicate that MDSTs are useful models for studies of targeted therapies, and propose novel potential biomarkers for identification of breast cancer patients likely to benefit from personalized pharmacological treatments.

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A preclinical mouse model of nonalcoholic steatohepatitis and hepatocellular cancer that mimics human disease

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

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