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Microglia coordinate the anti-tumor immune response to breast cancer brain metastasis

ABSTRACT: Microglia coordinate the anti-tumor immune response to breast cancer brain metastasis

PROVIDER: PRJNA622584 | ENA |

REPOSITORIES: ENA

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Microglia coordinate the anti-tumor immune response to breast cancer brain metastasis [MITRG 10X data]

Project description:Microglia coordinate the anti-tumor immune response to breast cancer brain metastasis [MITRG 10X data]

| PRJNA622587 | ENA

Microglia coordinate the anti-tumor immune response to breast cancer brain metastasis [Foxn1 nu/nu 10X data]

Project description:Microglia coordinate the anti-tumor immune response to breast cancer brain metastasis [Foxn1 nu/nu 10X data]

| PRJNA622588 | ENA

Microglia coordinate the anti-tumor immune response to breast cancer brain metastasis [Foxn1 nu/nu 10X data]

Project description:We used single-cell RNA-sequencing to investigate the role of brain-resident microglia versus infiltrating cells in a mouse model of breast cancer brain metastasis (BCBM). We generated brain metastases with a cardiac-injection of the human triple-negative breast cancer cell line MDA-MB-231BR2 (231BR) into Foxn1 nu/nu mice and allowed tumors to grow in the brain for four weeks. We then compared astrocytes (ASCA2+CD45-) and myeloid cells (CD11b+CD45+) from these mice verses control Foxn1 nu/nu brains to find transcriptional changes associated with BCBM.

2023-09-01 | GSE147942 | GEO

Microglia coordinate the anti-tumor immune response to breast cancer brain metastasis [MITRG 10X data]

Project description:We used single-cell RNA-sequencing to investigate the role of myeloid cells in a humanized mouse model of breast cancer brain metastasis (BCBM). We generated brain metastases with a cardiac-injection of the human triple-negative breast cancer cell line MDA-MB-231BR2 (231BR) into MITRG mice and allowed tumors to grow in the brain for 25 days. We then took all human cells (includes myeloid cells and 231BR) from these mice verses control MITRG brains (only myeloid cells) to find transcriptional changes associated with BCBM.

2023-09-01 | GSE147948 | GEO

Microglia coordinate the anti-tumor immune response to breast cancer brain metastasis

Project description:This SuperSeries is composed of the SubSeries listed below.

2023-09-01 | GSE147949 | GEO

Heterogeneity of Brain Metastasis-associated Microglia and Macrophages

Project description:Heterogeneity of Brain Metastasis-associated Microglia and Macrophages

| PRJNA565762 | ENA

Microglia coordinate cellular interactions during spinal cord repair

Project description:Microglia coordinate cellular interactions during spinal cord repair

| PRJNA807737 | ENA

Microglia coordinate cellular interactions during spinal cord repair

Project description:Traumatic spinal cord injury (SCI) triggers a neuro-inflammatory response dominated by tissue-resident microglia and monocyte derived macrophages (MDMs). Since activated microglia and MDMs are morphologically identical and express similar phenotypic markers in vivo, identifying injury responses specifically coordinated by microglia has historically been challenging. Here, we pharmacologically depleted microglia and use anatomical, histopathological, tract tracing, bulk and single cell RNA sequencing to reveal the cellular and molecular responses to SCI controlled by microglia. We show that microglia are vital for SCI recovery and coordinate injury responses in CNS-resident glia and infiltrating leukocytes. Depleting microglia exacerbates tissue damage and worsens functional recovery. Conversely, restoring select microglia-dependent signaling axes, identified through sequencing data, in microglia depleted mice prevents secondary damage and promotes recovery. Additional bioinformatics analyses reveal that optimal repair after SCI and likely other forms of neurological disease, might be achieved by co-opting key ligand-receptor interactions between microglia, astrocytes and MDMs.

2022-06-01 | GSE196928 | GEO

Amyloid Beta Promotes Brain Metastasis

Project description:Brain metastasis is a significant cause of morbidity and mortality in multiple cancer types and represents an unmet clinical need. The mechanisms that mediate metastatic cancer growth in the brain parenchyma are largely unknown. Melanoma, which has the highest rate of brain metastasis among common cancer types, is an ideal model to study how cancer cells adapt to the brain parenchyma. We utilized pairs of brain metastasis-derived (BM) and non-brain metastasis-derived (NBM) melanoma short term cultures (STCs) obtained from the same patient. We performed TMT based multiplexed analysis of these cell lines using off-line fractionation to increase our proteomics coverage. Our unbiased proteomics analysis of these melanoma short-term cultures revealed that proteins implicated in neurodegenerative pathologies are differentially expressed in melanoma cells explanted from brain metastases compared to those derived from extracranial metastases. We showed that melanoma cells require amyloid beta for growth and survival in the brain parenchyma. Melanoma-secreted A beta activates surrounding astrocytes to a pro-metastatic, anti-inflammatory phenotype and prevents phagocytosis of melanoma by microglia. Finally, we demonstrate that pharmacological inhibition of Abeta decreases brain metastatic burden.

2022-02-10 | MSV000088814 | MassIVE

Heterogeneity of Brain Metastasis-associated Microglia and Macrophages

Project description:Brain metastasis (BrM) represents a challenging clinical issue. The most common treatment options are surgery and irradiation. Little is known about the complex cellular and molecular microenvironment of BrM, thus lacking molecular targets to combat this dismal disease. It is known that macrophages from the periphery (monocyte-derived macrophages, MDM) and microglia, the brain-resident macrophages, comprise the most abundant stromal cell types in BrM. However, it is not known if both cell types represent a homogeneous cell population with redundant functions or if there are differences due to their ontologic origin. Besides breast cancer and melanoma, the highest incidence of BrM can be found in lung cancer. To gain deeper insight into the myeloid immune landscape and the heterogeneity of BrM-associated immune cells, we here provide single cell RNA Seq data of microglia and MDMs which were associated with a lung cancer (LuCa) BrM, as well as with an irradiated LuCa BrM. Cells were FACS purified into 384 well plates, snap frozen on dry ice and single cell RNA-Seq performed. Together, our data hint towards cell type-specific heterogeneity both, before and upon application of irradiation.

2020-05-13 | GSE137512 | GEO

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