Project description:We infected two strains of mice, 129S1/SvImJ and 129X1/SvJ, with coxsackievirus type b3 (CVB3) at a dose of 500 pfu/g. 129S1 mice developed increased cardiopathology despite equal viral replication. We hypothesized that the increased cardiopathology might result from an ongoing pathologic host response that we could characterize by global expression profiling. Gene expression was assessed in hearts from 129S1 and 129X1 mice that were uninfected or infected for 6 days.
Project description:We infected two strains of mice, 129S1/SvImJ and 129X1/SvJ, with coxsackievirus type b3 (CVB3) at a dose of 500 pfu/g. 129S1 mice developed increased cardiopathology despite equal viral replication. We hypothesized that the increased cardiopathology might result from an ongoing pathologic host response that we could characterize by global expression profiling. Gene expression was assessed in hearts from 129S1 and 129X1 mice that were uninfected or infected for 6 days. Total RNA obtained from hearts of 3 129S1 and 3 129X1 that were infected or uninfected with CVB3(H3) at 500pfu/g and collected at day 6 post infection
Project description:ABSTRACT: Viral aseptic meningitis is a neuroinflammatory condition that occurs when viruses gain access to the central nervous system (CNS) and induce inflammation. The blood-brain barrier (BBB) is comprised of brain endothelial cells (BECs) that stringently regulate the passage of molecules, toxins, and pathogens from the circulation into the CNS. Through their unique properties, such as complex tight junctions, reduced rates of endocytosis, expression of efflux transporters, and restricted expression of leukocyte adhesion molecules, the BBB is often able to limit pathogen entry into the brain; however, certain neurotropic pathogens, such as coxsackievirus B3 (CVB3) are able to infect the CNS. We have previously demonstrated that CVB3 can infect and disrupt induced pluripotent stem cell-derived brain-like endothelial cells (iBECs), but the host response to this infection remains unknown. Here, we investigate global host transcriptional changes during CVB3 infection of iBECs using RNA sequencing. We validated our data set by exploring pathways altered by CVB3 using quantitative real-time PCR (qPCR) and enzyme-linked immunosorbent assay of upregulated cytokines and interferon signaling molecules. IMPORTANCE: Coxsackievirus B3 (CVB3) is a leading cause of viral aseptic meningitis that can cause severe disease in susceptible individuals. To gain access to the central nervous system, CVB3 must cross central nervous system barriers, such as the blood-brain barrier. Previously, we have shown that CVB3 infects a human stem cell-derived brain-like endothelial cell model. Here, we report the global transcriptome of stem cell-derived brain-like endothelial cells to CVB3 infection and provide proof-of-concept validation of the dataset using molecular biology techniques. These data could inform novel mechanisms of CVB3-mediated blood-brain barrier dysfunction. KEYWORDS: Coxsackievirus B3, blood-brain barrier, brain endothelial cells, RNA sequencing, induced pluripotent stem cells