Microglia homeostasis mediated by epigenetic ARID1A to regulate neural progenitor cells response in brain development

We report the genomic characterization of H3K9me3 occupancy in microglia at E14 brain.CUT&Tag experiment was performed with antibody against H3K9me3. We generated genome-wide characterization of H3K9me3 occupancy in microglia and find that H3K9me3 was prone to bind the promoters and the intergenic regions. The number and proximity of H3K9me3 occupancy to the transcription start sites determined the probability of transcriptional regulation on genes expression.The genomic localization of H3K9me3 might reveal the importance role of ARID1A in chromatin landscape of microglia homeostatic state during cortical development. Detailed investigation of the binding profiles show that the enrichments of H3K9me3 peaks in the regulatory regions of Prg3 gene. This study provides a framework for the epigenetic regulation of ARID1A in microglia homeostasis. Overall design: We report the genomic characterization of H3K9me3 occupancy in microglia at E14 brain