Effect of isolated neutrophils from Cd177 knockout mice post-SCI on microglia in a co-culture system
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PROVIDER: PRJNA1157350 | ENA |
REPOSITORIES: ENA
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Project description:To investigate the transcriptional effects of CD177+ neutrophils on microglia in spinal cord injuries (SCI), we adapted a co-culture system containing isolated neutrophils from Cd177 WT or KO mice post-SCI and isolated microglia. Each group had a biological repeat (n=3).
2024-09-10 | GSE276429 | GEO
Project description:To investigate the transcriptional effects of CD177+ neutrophils on macrophages in spinal cord injuries (SCI), we adapted a co-culture system containing isolated neutrophils from Cd177 WT or KO mice post-SCI and bone marrow-derived macrophages (BMDMs). Each group had a biological repeat (n=3).
2024-09-10 | GSE276427 | GEO
Project description:Effect of isolated neutrophils from Cd177 knockout mice post-SCI on macrophages in a co-culture system
| PRJNA1157347 | ENA
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
Project description:Microglia are resident myeloid cells of the central nervous system (CNS). Recently, single-cell RNA sequencing (scRNAseq) has enabled description of a disease-associated subtype of microglia (DAM) with a role in neurodegeneration and demyelination. In this study we use scRNAseq to investigate the temporal dynamics of immune cells harvested from the epicenter of traumatic spinal cord injury (SCI). As a consequence of SCI, homeostatic microglia undergo permanent transcriptional re-programming into a subtype of microglia with striking similarities to previoysly reported DAM as well as a distinct microglial state found during development. Using a microglia depletion model we showed that DAM in SCI are derived from homeostatic microglia and strongly enhance recovery of hind limb locomotor function following injury.
2021-12-24 | GSE142849 | GEO
Project description:Isolation of glia from Alzheimer's mice reveals inflammation and dysfunction. Reactive astrocytes and microglia are associated with amyloid plaques in Alzheimer's disease (AD). Yet, not much is known about the molecular alterations underlying this reactive phenotype. To get an insight into the molecular changes underlying AD induced astrocyte and microglia reactivity, we performed a transcriptional analysis on acutely isolated astrocytes and microglia from the cortex of aged controls and APPswe/PS1dE9 AD mice. As expected, both cell types acquired a proinflammatory phenotype, which confirms the validity of our approach. Interestingly, we observed that the immune alteration in astrocytes was relatively more pronounced than in microglia. Concurrently, our data reveal that astrocytes display a reduced expression of neuronal support genes and genes involved in neuronal communication. The microglia showed a reduced expression of phagocytosis and/or endocytosis genes. Co-expression analysis of a human AD expression data set and the astrocyte and microglia data sets revealed that the inflammatory changes in astrocytes were remarkably comparable in mouse and human AD, whereas the microglia changes showed less similarity. Based on these findings we argue that chronically proinflammatory astrocyte and microglia phenotypes, showing a reduction of genes involved in neuronal support and neuronal signaling, are likely to contribute to the neuronal dysfunction and cognitive decline in AD. 2 cell types from 2 conditions: cortical microglia and cortical astrocytes from 15-18 month old APPswe/PS1dE9 mice compared to wildtype littermates. Biological replicates: microglia from APPswe/PS1dE9, N=7, microglia from WT, N=7, astrocytes from APPswe/PS1dE9, N=4, microglia from WT, N=4
2015-11-04 | E-GEOD-74615 | biostudies-arrayexpress
Project description:Aggressive inflammation and excessive scar formation are the main cause to the difficulty of neural tissue repair after spinal cord injury (SCI). Microglia and astrocytes act as important role in this micro-environment of SCI and there is cross regulation between microglia and astrocytes. After SCI, MG0 polarized into MG1 and MG3 which were belong to pro-inflammatory phenotype microglia; Naive astrocytes polarized into Reactive and Scar-forming astrocytes. Growth arrest-specific 6 (Gas6) and its receptor Axl was declined in all these cells after SCI. In vitro study, Gas6 had the negative effect on cytotoxic astrocytes and pro-inflammatory microglia polarization and even the cross regulation between cytotoxic astrocytes and pro-inflammatory microglia. Further mechanism study indicated that Gas6 suppressed cytotoxic phenotype polarization of astrocytes through inhibited the activation of YES-associated protein (YAP) signal pathway and suppressed pro-inflammatory phenotype polarization of microglia through inhibited the activation of NF-κB/p65 and JAK/Stat3 signal pathways. In vivo study, Gas6 treatment suppressed cytotoxic astrocytes and pro-inflammatory microglia polarization at the injured site of spinal cord to facilitate tissue repair and loco-motor recovery.
2023-10-21 | GSE245470 | GEO
Project description:Pathologically activated neutrophils (PMN), termed myeloid-derived suppressor cells (PMN-MDSCs), are major negative regulators of anti-tumor immunity. The mechanisms responsible for the pathological activation of neutrophils upon infiltration into tumors are not well defined, thus limiting the selective targeting of these cells. Tumor cells and immune cells engage in bi-directional manipulation of their respective metabolism, thereby altering cell function to facilitate tumor progression. Targeting the metabolism of responding immune cells can improve cancer treatment when combined with existing therapeutic strategies. Here, we investigated the role of metabolism in the immunoinhibitory actions of tumor PMN-MDSCs.
2022-05-04 | ST002160 | MetabolomicsWorkbench