Project description:The cellular response to astrovirus infection is not well defined. We used single cell RNA sequencing (scRNA-seq) to determine cellular response to astrovirus early or late in infection.
Project description:Ribosome profiling (RiboSeq) is a high-throughput sequencing technique for globally mapping the positions of translating ribosomes on the transcriptome. We infected Caco2 cells with human astrovirus 1 (HAstV1). Cells were harvested at 12 hpi and either flash frozen with no pre-treatment (NT), or pre-treated with lactimidomycin for 30 minutes followed by flash freezing (LTM). These samples where then used for ribosome profiling.
Project description:We identified the differentially expressed miRNAs in Landes goose liver after overfeeding for 21 days using high-throughput sequencing. We obtained 21453493 and 21525819 clean reads in normal liver and fatty liver by high-throughput sequencing, respectively. Of these clean reads, we respectively gained 9244896 and 9847086 miRNAs sequences in two groups by filtering the known non-miRNA reads, such as rRNA, tRNA, snRNA, and snoRNA by screening against ncRNA deposited in the GenBank and Rfam databases. These findings provided insights into the expression profiles of miRNAs in goose liver, and deepened our understanding of miRNAs in hepatic steatosis of geese.
Project description:Infections of the central nervous system (CNS) in humans are on the rise due to changing environmental conditions and increase in vulnerable populations comprised of immunocompromised subjects with primary (genetic) or secondary (acquired) immunodeficiency. Many viruses take the opportunity to invade the CNS by capitalizing on impaired immunity of the host. Here we investigate neuropathogenesis of a rare CNS infection in immunocompromised patients caused by the astrovirus and show that it shares many features with another opportunistic infection of the CNS associated with human immunodeficiency virus. We show that astrovirus infects CNS neurons with a major impact on the brainstem. This leads to disrupted synaptic integrity loss of afferent innervation related to infected neurons and global impairment of both excitatory and inhibitory neurotransmission. In the settings of impaired peripheral adaptive immunity host responses to astrovirus infection are dominated by the microglia-macrophage-phagocytosis axis which may be a common compensatory defense mechanism employed by the CNS against opportunistic infections.
Project description:In this study, we cultured lion-headed goose myoblasts and induced their differentiation, followed by RNA-seq extraction of total RNA from proliferative and differentiated cells, respectively. The identified lncRNAs and mRNAs were analyzed, including enrichment analysis, alternative splicing, and construction of interaction networks.
