In a recent bioRxiv preprint, the large team of researchers evaluated a SARS-CoV-2 Spike receptor-binding domain ferritin nanoparticle protein vaccine (RFN) in a nonhuman primate challenge model. This study addresses the need for a next-generation, efficacious vaccine with an increased pan-SARS breadth of coverage.
Beyond vaccination, the broad-spectrum antiviral medication remdesivir has robust clinical evidence and is known as the best antiviral treatment to reduce severe COVID-19 infection in hospitalized patients. Research led by John F.X. Diffley of the Chromosome Replication Laboratory suggests a potential therapeutic target for treatment development is the viral RNA cap methyltransferases, essential for viral protein translation and immune evasion.
A new preprint research paper posted to the medRxiv server explores the antibody response to COVID-19 vaccines in elderly residents of nursing homes in the USA. As of March 2021, there have been over 1.4 million infections from SARS-CoV-2 and over 175,000 deaths related to the pandemic among nursing home residents in the country.
Screening for SARS-CoV-2 non-structural protein 14 inhibitors
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) genome generates 16 distinct non-structural proteins (nsp) that constitute the enzymes and accessory proteins responsible for virus replication once inside a host cell. These protein complexes produce and cap RNA strands that will go on to be translated by the host machinery. Capping the RNA in a manner that is recognized as similar to endogenous mRNA ensures compatibility, lessens RNA degradation rates and lowers the probability of triggering an immune response in the host cell.
In a paper recently uploaded to the preprint server
et al. (April 8
th, 2021), inhibitors of one essential SARS-CoV-2 non-structural protein are explored, with four compounds, in particular, identified as potential antiviral leads that exhibit synergistic effects with antiviral drug remdesivir.
Pregnant women are at high risk for severe COVID-19 infection and death. Yet, insufficient safety data on babies has led many guidelines to leave the decision-making and potential threats to future mothers. While the vaccine trials did not directly test pregnant women, more real-world data suggests the vaccine may provide immunity benefits to newborns through breastmilk.