Project description:Comprehensive analyses of tissues at the single-cell level will benefit our understanding of genetic bases for complex traits. We performed single-cell RNA sequencing (scRNA-seq) analyses of peripheral blood mononuclear cells (PBMCs) from Holstein cattle, investigating their cell types and responses to lipopolysaccharide (LPS) treatment in vitro. The responses to LPS treatment include innate immunity activation of monocytes, macrophages, and dendritic cells, as well as B cell proliferation. The innate immunity responses are featured with CCL2 and CXCL2 proinflammatory cytokines. We detected trait-relevant cell types and found that DEGs induced by LPS were significantly associated with many complex traits of economic value in Holstein.
Project description:Comprehensive analyses of tissues at single-cell level will benefit our understanding of genetic bases for complex traits. Here we present an initial effort of single-cell transcriptomic analyses of cattle ruminal epithelial cells during the rumen development. We obtained 5064 and 1372 cells from Holstein ruminal epithelial cells before and after weaning, respectively. We reported 6 cell types across their temporal and spatial distributions, which were partially correlated with rumen epithelium layer’s structures and functions. We also reported a distinct sets of cell markers for these cell types, for example, CRA1, HMMR, MKI67, and EZH2 for the dividing epithelial cells and the TGFB pathway and the keratin gene family for keratinized epithelial cells. Our proposed a cell lineage model may contribute to the understanding of cattle rumen epithelial proliferation and development.
Project description:The transcriptome of PBMC from rheumatoid arthritis patient hasn't been compenhensively profiled, and heterogeneous characteristics of blood monocytes in RA patients are much unknown. We performed the single cell transcriptomic analysis of PBMC from rheumatoid arthritis (RA) patient, and monocyte populations were extracted during the analysis. CD127 expression associated expression pattern of inflammatory genes was identified in RA patient's blood monocytes.
Project description:To assess the impact of IgG1 and IgG4 variants of a TIGIT-Fc-LIGHT fusion protein on human PBMC expression, each fusion protein or an untreated control were incubated with human PBMC for 2 days in AIMV lymphoproliferative media. Both IgG1 and IgG4 variants of TIGIT-Fc-LIGHT induced broad immune cell activation on T, NK, and myeloid cells.