MENU
SEP 17, 2020 9:00 AM PDT

Coronaviruses: History, Biology and Innate Immune Antagonism

C.E. Credits: P.A.C.E. CE Florida CE
Speaker
  • Professor and Vice Chair Department of Microbiology, Co-Director, Penn Center for Research on Coronaviruses and Other Emerging Pathogens Perelman school of Medicine University of Pennsylvania
    BIOGRAPHY

Abstract

Part I:  Introduction and history coronaviruses dating back to the 1980s and coronavirus biology. I will describe the coronavirus life cycle pointing steps that may serve as targets of antiviral therapies that may effective against most if not all coronaviruses.

Part II. Coronaviruses are highly effective in antagonizing host innate immune responses, more specifically interferon (IFN) induction and signaling pathways. MERS-CoV and SARS-CoV fail to induce IFN early in infections of humans and in mouse models while IFN production in late disease may be pathogenic. Antagonism of host responses is carried out through expression of multiple viral accessory proteins as well as conserved replicase encoded proteins, sometimes with redundant activities. Our lab focuses on the double-stranded RNA induced antiviral pathways: type I and types III IFNs, oligoadenylate synthetase-ribonuclease (OAS-RNase L) and protein kinase R (PKR). Activation of these pathways leads to inhibition of viral replication, shut down of protein synthesis and apoptotic cell death. I will discuss coronavirus antagonism of these pathways using examples from our previous studies of the betacoronaviruses murine coronavirus MHV and MERS-CoV and recent data on SARS-CoV-2.

Learning Objectives:

1. Coronaviruses enter cells by two pathways, at the plasma membrane fusion or through endosomes

2. Coronaviruses encode 16 conserved non-structural proteins in the replicase locus, potential targets for pan coronavirus antivirals

3. Coronaviruses are adept at antagonizing activation of dsRNA induced antiviral pathways, including interferon signaling, OAS-RNase L and PKR


Show Resources
You May Also Like
FEB 24, 2021 10:00 AM PST
C.E. CREDITS
FEB 24, 2021 10:00 AM PST
DATE: February 24, 2021 TIME: 10am PST Automated lab instruments such as liquid handlers and cell sorters are increasingly common in all types of laboratories, driving fast results for labor...
JAN 21, 2021 8:00 AM PST
JAN 21, 2021 8:00 AM PST
Date: January 21, 2021 Time: 8:00am (PST), 11:00am (EST) Today, critical reagent characterization is a key component in the overall workflow to establish robust ligand binding assays (e.g.,...
APR 21, 2021 10:00 AM PDT
C.E. CREDITS
APR 21, 2021 10:00 AM PDT
Date: April 21, 2021 Time: 10:00am (PDT), 1:00pm (EDT) Serological testing for SARS-CoV-2 has been steadily adopted into clinical practice over the course of this pandemic. In this webinar,...
DEC 15, 2020 10:00 AM PST
C.E. CREDITS
DEC 15, 2020 10:00 AM PST
DATE: December 15, 2020 TIME: 10:00am PST Scientists from Thermo Fisher Scientific will walk us through the world of microorganisms. They will discuss their most recent research on viruses,...
MAR 16, 2021 10:00 AM PDT
C.E. CREDITS
MAR 16, 2021 10:00 AM PDT
Date: March 16, 2021 Time: 10:00am (PST) Scientific progress and breakthroughs today are often too expensive for most institutions to acquire. Each year, the National Institutes of Health (N...
APR 01, 2021 8:00 AM PDT
C.E. CREDITS
APR 01, 2021 8:00 AM PDT
Date: April 01, 2021 Time: 8:00am (PST), 11:00am (EST) Generating therapeutic antibodies is far more challenging than obtaining antibodies that merely recognize their targets. Engineering po...
Loading Comments...
Show Resources
Attendees
  • See more