Project description:The 2013-2016 Ebola Zaire virus (EBV) outbreak in West Africa resulted in over 28,000 cases and 11,000 deaths. Ebola virus disease (EVD) is a highly virulent systemic disease with a high case fatality rate of ~ 50%. EVD results in hemorrhagic fever marked by an exaggerated systemic inflammatory response, and impaired vascular and coagulation systems. The immune response of patients who either survived or died is characterized by strong differences. Notably, fatalities showed a diminished capacity to mount an appropriate immune response, resulting in high viremia and increased pro-inflammatory cytokine production. In this study, we analyzed 38 sequential samples collected from 12 patients: 8 survivors and 4 fatalities. Our analytical strategy combined three protein-based platforms covering three different fractions of the plasma proteome: the undepleted classical plasma proteome, the depleted plasma proteome, and cytokines/chemokines, using LC/MS- and antibody-based assays, resulting in over 1000 quantified host and pathogen proteins. For depletion of the most abundant plasma proteins, we advanced a perchloric acid-based precipitation method. This method is low cost, high-throughput and robust.
Project description:Immune patterns in Ebola patients were characterized depending on the outcome of the illness. Non-healthy controls were compared to Ebola patients to define the specificity of the immune response against Ebola virus infection.
Project description:The purpose is to obtain samples for mRNA analysis in human U937 cells infected with Zaire Ebola virus wild-type in the deltaVP30 background and delta-mucin virus. Human U937 cells (monocyte-like) expressing the Ebola VP30 protein were infected with Zaire Ebola virus wild-type (wild) in the delta-VP30 background and delta-mucin virus (encodes a GP lacking the mucin domain) (mucin). Infected samples were collected in quintuplet; time-matched mocks were collected in quintuplet in parallel with infected samples. Time points: 0, 8, 18, and 30 h post-infection.
Project description:Ebola virus can cause a severe and often fatal hemorrhagic fever in humans and other mammals, known as Ebola virus disease (EVD),the mechanism of how this pathogenesis comes about is not well understood, but it is well accepted that pathogenesis is significantly driven by a hyperactive immune response. To better understand the overall response to Ebola virus challenge, we undertook a transcriptomic analysis using the whole blood of EBOV infection patients.
Project description:Ebola virus can cause a severe and often fatal hemorrhagic fever in humans and other mammals, known as Ebola virus disease (EVD),the mechanism of how this pathogenesis comes about is not well understood, It is assumed that miRNA may have important roles in virus infection response. To better understand the function of miRNA in EBOV infection disease, we undertook a miRNA profiling analysis using the whole blood of EBOV infection patients.
Project description:Transcriptomic analyses showed that Ebola virus delta peptide triggers damage response and cell survival pathways. Delta peptide also downregulates the expression of transporters and exchangers that mediate absorption of ions, sugars, and small chain fatty acids.
