Project description:The SARS-CoV-2 outbreak started on December 2019 in China and rapidly spread worldwide. Clinical manifestations of Coronavirus-disease 2019 (COVID-19) vary broadly, ranging from asymptomatic infection to acute respiratory failure and death, yet the underlying mechanisms and predictive biomarkers for this high variability are still unknown. Emerging evidence has shown that circulating extracellular vesicles (EVs) and extracellular RNAs (exRNAs) are functionally involved in a number of physiologic and pathologic processes. To test the hypothesis that these extracellular components are a key determinant of severity in COVID-19, we collected 31 serum samples from mild COVID-19 patients at admission in single center. After standard therapy without corticosteroids, 9 of 31 patients became severe COVID-19. We analyzed exRNA profiles from the 31 serums and 10 healthy controls for predicting COVID-19 severity value.
Project description:The outbreak of Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection, has led to an unparalleled global health crisis. While the majority of COVID-19 patients present with mild respiratory issues, a subset of patients still develop severe symptoms and life-threatening complications. Notably, abnormal coagulation and thrombosis are significant contributors to mortality in severe COVID-19 patients. Therefore, this study stimulated aortic endothelial cells with SARS-Cov-2 S protein and performed transcriptome sequencing analysis.
Project description:The 2017-2019 foodborne outbreak of Salmonella enterica serovar Reading (S. Reading) in North America revealed the need for effective control of this serovar in turkey production. This study evaluated two live-attenuated Salmonella vaccines against an outbreak-associated strain of S. Reading in turkeys. At 1 day and 3 weeks of age, male turkey poults were either mock-vaccinated or given either an internally developed cross-protective vaccine and a commercially available vaccine. At 7 weeks of age, poults were challenged with S. Reading; one mock-vaccinated group was mock-challenged. Along with assessment of Salmonella colonization and dissemination, acute transcriptomic responses in the cecal tonsil were characterized at 2 days post inoculation and revealed decreased expression of genes encoding intestinal transporters and tight junction proteins. Vaccination with either vaccine mitigated most of the transcriptional changes in intestinal health-related genes induced by S. Reading in turkey cecal tonsil.
Project description:Coronavirus disease 2019 (COVID-19) is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), whose outbreak in 2019 led to an ongoing pandemic with devastating consequences for the global economy and human health. According to World Health Organization, COVID-19 has affected more than 481 million people worldwide, with 6 million confirmed deaths. The joint efforts of the scientific community have undoubtedly increased the pace of production of COVID-19 vaccines, but there is still so much uncharted ground to cover regarding the mechanisms of SARS-CoV-2 infection, replication and host response. This issues can be approached by proteomics with unprecedented capacity paving the way for the development of more efficient strategies for patient care. In this study, we present a deep proteome analysis that has been performed on a series of COVID-19 patients aiming to identify proteins assessing the dynamics of the disease at different age ranges