Single-cell transcriptome profiles of wild-type and IRF8KO microglia
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE266423 | GEO | 2024/07/01
REPOSITORIES: GEO
Similar Datasets
Project description:The role of the lineage-determining transcription factor IRF8 in microglia remains unelucidated. We report the genome-wide, transcriptome profiles of wild-type, IRF8KO, IRF8cKO, Batf3KO, 5xFAD, and 5xFAD/IRF8KO microglia. Deep-sequencing and subsequent differential analysis revealed the impacts of IRF8 on microglia-specific transcription programs, such as cell identity. Sall1 and Batf3 genes were identified as a downstream transcription factor of IRF8, and Batf3 dependent genes showed correlation with IRF8-dependent genes in microglia. The conditional depletion of IRF8 gene after microglial maturation (P14) increased or decreased the gene expression, most of which were shared with those of IRF8KO. This study provides a novel insight into understanding transcriptional programs in microglia.
2023-06-01 | GSE231403 | GEO
Project description:The role of the lineage-determining transcription factor IRF8 in microglia remains unelucidated. We analyzed the transcriptome diversity of wild-type and IRF8KO microglia. Deep-sequencing and subsequent differential analysis revealed the significance of the IRF8-dependent transcription on microglial heterogeneity and self-renewing. This study provides a novel insight into understanding IRF8-mediated transcriptional programs in microglia.
2023-06-01 | GSE231405 | GEO
Project description:The lineage-determining transcription factor IRF8's function in microglia is unclear. Our study aims to shed light on this by analyzing the genome-wide, temporal transcriptome profiles of wild-type and IRF8KO microglia. We used deep-sequencing and differential analysis to identify the effects of IRF8 on transcription programs in microglia, such as microglia identity gene expression. This study provides a new understanding of the transcriptional programs in microglia.
2024-07-01 | GSE266422 | GEO
Project description:The role of a transcription factor, Interferon Regulatory Factor 8 (IRF8), in microglia is yet to be fully understood. We conducted a study to examine the chromatin status of postnatal and adult wild-type (WT) and IRF8-knockout (IRF8KO) microglia through ATAC-Seq. We also added 5xFAD Alzheimer's disease microglia to observe any chromatin events that may be similar in disease-associated microglia. After deep-sequencing and differential analysis, we discovered that chromatin accessibility in microglia is dependent on IRF8. In the absence of IRF8, there was aberrant chromatin accessibility that potentially resulted in mRNA transcription of genes that were upregulated in IRF8KO microglia, which was distinct from 5xFAD microglia. This study contributes to a better understanding of epigenetic regulation in microglia.
2024-07-01 | GSE266421 | GEO
Project description:The role of the lineage-determining transcription factor, Interferon regulatory factor (IRF8), in microglia remains elucidated. We report the genome-wide methyl-CpG status in adult wild-type (WT) and IRF8-knockout (IRF8KO) microglia by whole-genome bisulfite-Seq (WGBS). Deep-sequencing and subsequent differential analysis revealed that IRF8KO microglia exhibited a cell-intrinsic methylation profile. Furthermore, the differentially methylated regions showed a significant correlation with IRF8-dependent chromatin accessibility in microglia. This study provides a novel insight into understanding epigenetic regulation in microglia.
2023-06-01 | GSE231404 | GEO
Project description:The role of the lineage-determining transcription factor, Interferon regulatory factor (IRF8), in microglia remains unelucidated. We report the genome-wide chromatin status in adult wild-type (WT) and IRF8-knockout (IRF8KO) microglia by ATAC-Seq. Deep-sequencing and subsequent differential analysis revealed that chromatin accessibility in microglia requires IRF8. At the same time, the loss of IRF8 gains aberrant chromatin accessibility that potentially confers mRNA transcription of the genes upregulated in IRF8KO microglia. This study provides a novel insight into understanding epigenetic regulation in microglia.
2023-06-01 | GSE231401 | GEO
Project description:The role of the lineage-determining transcription factor Interferon regulatory factor 8 (IRF8) in microglia remains elucidated. Here we report the genome-wide IRF8 binding profiles in microglia at various ages. CUT&RUN methodology revealed that IRF8 starts to bind to the genome around postnatal day 9 (P9), and its number increases with age. In comparison to peritoneal macrophages, microglia IRF8 showed a cell-intrinsic binding pattern. By co-occurrence analysis, most IRF8 was H3K4me1/H3K27ac-marked enhancers, and many of them bind to the H3K27ac(high) super-enhancer regions. In IRF8KO microglia, H3K4me1 and H3K27ac profiles were altered and deposited aberrantly on the genome. This study provides a novel insight into understanding epigenetic regulation in microglia.
2023-06-01 | GSE231402 | GEO
Project description:The superior olivary complex (SOC) is a prominent auditory brainstem center and represents one of the prime model systems to study the development of sensory circuits. We recently performed genome-wide microarray studies to analyze the SOC-related genetic program at postnatal day (P)4 and P25. Here, we extended this analysis by including two additional time points, P0 and P16. Data sets were validated by qRT-PCR. Statistical analysis were performed for the different developmental time points as well as with for differences between the SOC and our previously analyzed brain samples. This analysis revealed that after hearing-onset (P16 and P25), 918 oligos were up-regulated and 810 oligos down-regulated in the SOC compared to the two prehearing stages (P0 and P4). Of the up-regulated oligos, 530 were significantly higher expressed compared to the brain at P25. Concerning neurotransmission, SOC-related elevation was mainly observed for K+ channels, G-proteins, and myelination-related proteins, whereas Ca2+-related proteins showed a decreased expression. In the pre-hearing period, 47 oligos were up-regulated compared to the brain. Several of them were transcription factors, previously associated with other auditory structures, and might ensure coordinated development of peripheral and central auditory structures. Stage-specific comparison identified distinct genetic programs during development: Circuit formation/refinement at P4; myelination and circuit refinement/consolidation at P16; and neuroprotection at P25. Altogether, our study defines the genetic program of postnatal SOC development and provides strong functional candidates for various developmental processes. The genome wide expression during the postnatal development of the SOC was investigated at two different time points: at postnatal (P) day 0 (before hearing onset) and P16 (after hearing onset). Samples were hybridized onto two color platforms. At least 6 up to nine biological replicates per sample were performed.
2013-07-31 | E-GEOD-34003 | biostudies-arrayexpress
Project description:Microglia represent the resident innate immune cells of the retina and are important for retinal development and tissue homeostasis. However, dysfunctional microglia can have a negative impact on the structural and functional integrity of the retina under native and pathological conditions. In this study, we used interferon-regulating factor 8 (Irf8)-deficient mice to determine the transcriptional profile, morphology, and temporal-spatial distribution of microglia lacking Irf8 and to examine the effects on retinal development, tissue homeostasis, and choroidal neovascularization (CNV) formation. We hereby found a severely altered morphological phenotype accompanied by loss of microglia signature genes in IRF8 deficient microglia. An in-depth characterization by funduscopy, fluorescein angiography, optical coherence tomography and electroretinography revealed no major retinal abnormalities. However, in the laser-induced CNV model, Irf8-deficient microglia showed increased activity of biological processes critical for inflammation and cell adhesion and reduced cell number near the lesions, which was associated with significantly increased CNV lesion size. Our results suggest that Irf8 has negligible functions in the steady state but is critical in converting resident microglia to a reactive phenotype under pathologic conditions and thus can suppress retinal inflammation and CNV formation.
2021-08-27 | GSE182504 | GEO
Project description:The superior olivary complex (SOC) is an essential auditory brainstem structure involved in sound localization. In order to identify the genetic program underlying its maturation, we profiled the transcriptome of the rat SOC at postnatal days (P)0, P4, P16, and P25, using genome-wide microarrays (41,012 sequences). Differences in gene expression between two consecutive stages were highest between P4 versus P16 (3.6%), but dropped to 0.06% between P16 versus P25. To identify SOC-related genetic programs, we also profiled the brain at P4 and P25. Differentially expressed sequences between SOC and brain almost doubled from P4 (4.4%) to P25 (7.6%). These datademonstrate considerable molecular specification around hearing onset, which is rapidly finalized. Prior to hearing onset, several transcription factors associated with the peripheral auditory system were up-regulated, likely coordinating auditory system development. Additionally, serotonin-related genes and crystalline-gamma subunits were highly expressed. The molecular repertoire of mature neurons was sculpted by SOC-related up- and down-regulation of several protein categories, among which voltage-gated channels and myelination were prominent. Comparison with the brain revealed a significant enrichment of deafness-related oligos in the SOC-related genetic program (26 in the SOC, only 11 in the brain). Furthermore, 29 out of 453 SOC-related oligos mapped within 19 genetic intervals associated with hearing impairment. Together, we identified sequential genetic programs in the SOC, thereby pinpointing candidates which may guide its development and ensure proper function. The enrichment of deafness-related genes in the SOC may have implications for restoring hearing, as central auditory structures might be more severely affected than previously appreciated. This SuperSeries is composed of the SubSeries listed below. The genome wide expression during the postnatal development of the SOC was investigated at four different time points: at postnatal (P) day 0, P4, P16 and P25. Concerning the brain, P4 and P25 were used. Samples were hybridized onto two color platforms. At least 6 up to nine biological replicates per sample were performed.
2013-07-31 | E-GEOD-36470 | biostudies-arrayexpress