Project description:The adult human lung harbours a significant proportion of immune cells, which are known to play a crucial role in both normal lung homeostasis and pathogenesis. In this work, we collected CD45-enriched human lung cells from 6 to 22 week post conception (pcw) and built a single-cell transcriptome and proteome atlas. We showed a biphasic mode of immune cell development peaking at 8-9 and 20 pcw respectively. The developing immune cells potentially modulate the maturation of the epithelium through signalling molecules. We demonstrated using the lung organoid model that IL-1ß was required for epithelium differentiation. Overall, we provide a resource for the community of lung biologists and immunologists and provide insights on the interaction between the innate immune system and epithelium during fetal development.
Project description:We performed single cell RNA sequencing (scRNA-seq) of NSCLC tumours and matched, adjacent, non-involved lung tissue from 24 patients. The data set is composed of approximately 900,000 cells from two different populations: CD235- (haematopoietic and non-haematopoietic cells depleted of erythrocytes), and CD45+ (all haematopoietic cells).
Project description:Obesity-driven pathological expansion of white adipose tissue (WAT) is a key driver of endothelial dysfunction. Contrary to this paradigm, early vascular alterations associated with over nutrition also exacerbate AT dysfunction. To dissect this complex cause and consequence relationship, here we perform a single-cell transcriptomics screen to generate a detailed landscape of endothelial heterogeneity and vascular alterations in murine model of obesity. Given the differences in ontogeny and function of distinct WAT depots, we demarcate key differences in subcutaneous and visceral WAT vasculature. In addition to descriptive taxonomy, we perform in-depth validation and characterization of our in silico data. We identify a sWAT specific fenestrated endothelial cell subtype, which is drastically reduced in obese conditions. This reduction was associated with a decrease in VEGFA expressing perivascular cells. The novel endothelial subtypes provide a basis for future research and new directions for therapeutic interventions.
Project description:Single-cell RNA-seq analysis of mouse CD4 T cells to understand the function of HDAC1 for pathogenic Th2 cells. Wildtype and HDAC1 KO cell from several sorted populations are covered. Hashtag oligos were used to enable multiplexing before analysis on a 10x chromium.