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Bulk ATAC-Seq of Trem2+ cells from mouse skin, mouse wound, and mouse basal cell carcinoma (BCC).

ABSTRACT: We used ATAC-Seq to exmaine the Trem2+ cells from different sources.

ORGANISM(S): Mus musculus

PROVIDER: GSE204948 | GEO | 2023/03/29

REPOSITORIES: GEO

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Bulk ATAC-Seq of Trem2+ cells from mouse skin, mouse wound, and mouse basal cell carcinoma (BCC).

Project description:Bulk ATAC-Seq of Trem2+ cells from mouse skin, mouse wound, and mouse basal cell carcinoma (BCC).

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Cortical bulk RNA sequencing of the microglia specific TREM2 inducible mouse models

Project description:We performed brain bulk RNA-seq aiming to study how microglia TREM2-WT or TREM2-R47H expression affect the overall brain transcriptomic profiles. Using WGCNA gene network analysis, we found the presynaptic transmission pathway was dysregulated after TREM2-R47H expression, not TREM2-WT. This finding was consistent with the impaired presynaptic transmission detected by electrophysiological recording in TREM2-R47H expressing mice. In addition, dysregulated circadian pathways were also identified in TREM2-R47H mice, not in TREM2-WT mice. Altogether, our bulk RNA-seq results provide additional evidence at transcriptomics level that TREM2-R47H expression in microglia affects neuronal functions and brain networks.

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Expression data from WT and TREM2 deficient microglia in a mouse model of Alzheimer's disease

Project description:We examined the role of TREM2 on microglia responses to amyloid-beta deposition in a mouse model of Alzheimer's disease Microglia were FACS-purified from 8.5 month old WT, Trem2-/-, 5XFAD, and Trem2-/- 5XFAD mice

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TREM2 regulates microglial cell activation in response to demyelination in vivo

Project description:Microglia are phagocytic cells that survey the brain and perform neuroprotective functions in response to tissue damage, but their activating receptors are largely unknown. Triggering receptor expressed on myeloid cells 2 (TREM2) is a microglial immunoreceptor whose loss-of-function mutations in humans cause presenile dementia, while genetic variants are associated with increased risk of neurodegenerative diseases. In myeloid cells, TREM2 has been involved in the regulation of phagocytosis, cell proliferation and inflammatory responses in vitro. However, it is unknown how TREM2 contributes to microglia function in vivo. Here, we identify a critical role for TREM2 in the activation and function of microglia during cuprizone (CPZ)-induced demyelination. TREM2-deficient (TREM2(-/-)) mice had defective clearance of myelin debris and more axonal pathology, resulting in impaired clinical performances compared to wild-type (WT) mice. TREM2(-/-) microglia proliferated less in areas of demyelination and were less activated, displaying a more resting morphology and decreased expression of the activation markers MHC II and inducible nitric oxide synthase as compared to WT. Mechanistically, gene expression and ultrastructural analysis of microglia suggested a defect in myelin degradation and phagosome processing during CPZ intoxication in TREM2(-/-) microglia. These findings place TREM2 as a key regulator of microglia activation in vivo in response to tissue damage. Two STAGE (6weeks 12 weeks),

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TREM2 interacts with TDP-43 and mediates microglial neuroprotection against TDP-43-related neurodegeneration

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Expression data from wild type (WT) and TREM2 null alveolar macrophages (AM)

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Expression data from WT and TREM2 deficient microglia in response to cuprizone mediated demyelination

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