Project description:To investigate cellular landscape of dural immune cells, dural immune cells from 30 P28 male mice and 30 P7 male mice were FACS sorted and single-cell RNA seqs were performed
Project description:To investigate heterogeneity of CNS border vasculatures, endothelial cells (EC) from 30 adult male mice were FACS sorted and single-cell RNA seqs were performed
Project description:To investigate heterogeneity of MHCII high CNS border-associated mononuclear phagocytes (BAMPs), MHCII high BAMPs from 30 adult male mice were FACS sorted and single-cell RNA seqs were performed
Project description:While macrophages in the meningeal compartments of the central nervous system (CNS) has been comprehensively characterized under steady state, studying their contribution to physiological and pathological processes has been severely hampered by the lack of specific targeting tools in vivo. Recent findings have shown that the dural sinus and its adjacent lymphatic vessels act as a neuroimmune interface. Notably, the cellular and functional heterogeneity of extrasinusoidal dural macrophages outside this immune hub is currently unclear. Therefore, we comprehensively characterized these cells using single-cell transcriptomics, fate mapping, confocal imaging, clonal analysis and transgenic mouse lines. Extrasinusoidal dural macrophages were clearly distinct from leptomeningeal and CNS parenchymal macrophages in terms of their origin, expansion kinetics and transcriptional profiles. Lastly, functional studies demonstrated that during autoimmune neuroinflammation, extrasinusoidal dural macrophages perform efferocytosis of granulocytes. Our results highlight a previously unappreciated myeloid cell diversity and provide insights into the brain’s innate immune system.
Project description:To investigate different responses of dural macrophage subsets to systemic viral infection, we collected the dura mater from mice 12 h after systemic LCMV infection and macrophages were sorted