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Sulfatide deficiency-induced astrogliosis and myelin lipid dyshomeostasis are independent of Trem2-mediated microglial activation_Female cerebrum study

ABSTRACT: Sulfatide deficiency-induced astrogliosis and myelin lipid dyshomeostasis are independent of Trem2-mediated microglial activation_Female cerebrum study

PROVIDER: PRJNA1240354 | ENA |

REPOSITORIES: ENA

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Sulfatide deficiency-induced astrogliosis and myelin lipid dyshomeostasis are independent of Trem2-mediated microglial activation_Male cerebrum study

Project description:Sulfatide deficiency-induced astrogliosis and myelin lipid dyshomeostasis are independent of Trem2-mediated microglial activation_Male cerebrum study

| PRJNA1240361 | ENA

Sulfatide deficiency-induced astrogliosis and myelin lipid dyshomeostasis are independent of Trem2-mediated microglial activation_Male cerebrum study

Project description:This study investigates the impact of central nervous system sulfatide (ST) deficiency on gene expression in the male mouse cerebrum tissues, both in the presence and absence of Trem2, using the NanoString Neuroinflammation panel.

2025-09-04 | GSE292643 | GEO

Sulfatide deficiency-induced astrogliosis and myelin lipid dyshomeostasis are independent of Trem2-mediated microglial activation_Female cerebrum study

Project description:This study investigates the impact of central nervous system sulfatide (ST) deficiency on gene expression in the female mouse cerebrum tissues, both in the presence and absence of Trem2, using the NanoString Neuroinflammation panel.

2025-09-04 | GSE292640 | GEO

Sulfatide deficiency-induced astrogliosis and myelin lipid dyshomeostasis are independent of Trem2-mediated microglial activation_Female spinal cord study

Project description:Sulfatide deficiency-induced astrogliosis and myelin lipid dyshomeostasis are independent of Trem2-mediated microglial activation_Female spinal cord study

| PRJNA1240358 | ENA

Sulfatide deficiency-induced astrogliosis and myelin lipid dyshomeostasis are independent of Trem2-mediated microglial activation_Female spinal cord study

Project description:This study investigates the impact of central nervous system sulfatide (ST) deficiency on gene expression in the female mouse spinal cord tissues, both in the presence and absence of Trem2, using the NanoString Neuroinflammation panel.

2025-09-04 | GSE292641 | GEO

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),

2015-07-06 | E-GEOD-70475 | biostudies-arrayexpress

Danionella cerebrum

Project description:Danionella cerebrum overview

| PRJNA1087479 | ENA

Acute TREM2 Blockade Impairs Remyelination by Reducing MAFB-High Microglia

Project description:We investigated the role of Triggering Receptor Expressed on Myeloid cells 2 (TREM2) in myelin regeneration in the brain. TREM2 is a receptor found on microglia, which are crucial for clearing myelin debris and promoting remyelination. Previous studies in a mouse model of demyelination induced by the copper-chelating agent Cuprizone (CPZ) have shown that stimulation of TREM2 with a monoclonal antibody reduces demyelination, while deleting the Trem2 gene in mice impairs remyelination. Here we blocked TREM2 function acutely with an antibody during both the demyelination and remyelination phases and analyzed the impact of the antibody on myelination and gene expression in single cells. We found that blocking TREM2 depleted a specific population of microglia characterized by high expression of the transcription factor MAFB during remyelination. These MAFB-high microglia were crucial for myelin repair, and their depletion led to impairment of myelinating oligodendrocytes. Importantly, we identified MAFB+ microglia in acute and acute-chronic brain lesions from individuals with multiple sclerosis (MS), but not in inactive lesions. We conclude that TREM2 is essential for maintaining a population of MAFB-high microglia that are critical for myelin repair. This finding has important implications for understanding demyelinating diseases like MS and suggests that stimulating TREM2 could be a potential therapeutic strategy.

2025-04-23 | GSE286194 | GEO

TREM2 regulates microglial cell activation in response to demyelination in vivo

2015-07-06 | GSE70475 | GEO

PLCG2 Regulates Divergent Microglial Functions via TREM2-Dependent and -Independent Signaling

Project description:We use genetically engineered human iPSC-derived microglia-like cells (iMG) to show that TREM2 signals through PLCγ2 to mediate cell survival, phagocytosis, and lipid metabolism following myelin challenge. Loss of TREM2 or PLCγ2 signaling leads to a shared signature of transcriptional dysregulation that underlies these phenotypes. However, PLCγ2 also signals downstream of Toll-like receptors to mediate inflammatory responses in a TREM2-independent manner. Therefore, PLCγ2 activity regulates divergent microglial functions via distinct TREM2-dependent and -independent signaling and may be involved in the transition to a microglial state associated with neurodegenerative disease.

2020-05-24 | GSE144120 | GEO

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