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Study highlights importance of positive and negative selection in evolution of SARS-CoV-2 variants

Researchers from the University of Colorado Anschutz Medical Campus have been investigating the changes imparted on the Gamma variant by three RBD mutations.

28 Dec 2021

Decline in protection against SARS-CoV-2 Omicron in prior infected and fully vaccinated

In a recent study posted to the medRxiv* preprint server, researchers investigated the distribution of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Delta and Omicron variants among coronavirus disease 2019 (COVID-19) positive individuals who were either naive, fully vaccinated, or had a previous infection to further investigate possible escape from vaccine- or infection-induced immunity by Omicron compared to Delta.

22 Dec 2021

Efficacy of SARS-CoV2 variant-specific replicating RNA vaccines on SARS-CoV-2 variants of concern

A new study evaluates the repRNA vaccine expressing the SARS-CoV-2 spike protein for the B.1.1.7 and B.1.351 variants in mice and hamsters.

19 Dec 2021

Casting a wider net in zebrafish imaging

In this interview, News-Medical talks to Dr. Alex Lubin and Dr. Jason Otterstrom, about the use of deep learning powered automated microscopy and image analysis for in vivo Zebrafish screening.

From IDEA Bio-Medical Ltd. 15 Dec 2021

Research suggests targeting fusion peptide-calcium interaction may help treat COVID-19

Researchers discovered that the entry of coronaviruses is a Ca2+-dependent process and focused their studies on the SARS-1 FP-Ca2+ interaction and its effect on membranes using electron spin resonance (ESR).

10 Dec 2021

Efficacy and safety of an RBD-based recombinant protein COVID-19 vaccine

A study developed a protein-based subunit vaccine, PHH-1V, that consisted of a recombinant RBD fusion heterodimer of the alpha) and beta variants of SARS-CoV-2.

26 Nov 2021

Antisense oligonucleotides engineered to inhibit SARS-CoV-2

In a paper recently uploaded to the bioRxiv* preprint server, structure-based ASOs are developed against SARS-CoV-2, intended to bond with RNA in its structured in situ form, rather than the more rarely encountered linear section, achieving greater affinity and specificity than linear ASOs, and demonstrating inhibition of virus replication in human cells.

30 Aug 2021

Study shows difference in antibody levels in response to SARS-CoV-2 infection and type of vaccination

In a recent study, researchers aimed to monitor the levels of the anti-SARS-CoV-2 spike IgG levels in populations that were subjected to routine tests.

24 Aug 2021

SARS-CoV-2 spike-specific antibodies induced in breast milk by COVID-19 vaccines

An interesting new paper examines how these vaccines can help young patient populations to withstand the virus.

27 Jul 2021

Natural compound 'pheophorbide a' demonstrates robust antiviral activity against SARS-CoV-2 in vitro

A team of scientists from France has recently demonstrated photosensitive antiviral activity of the natural compound pheophorbide a (Pba) against a broad range of enveloped viruses, including coronaviruses.

12 Jul 2021

Researchers conduct a SARS-CoV-2 serosurvey of blood donors in New Zealand

New research has been released, which focuses on the transmission and prevalence of SARS-CoV-2 in New Zealand, through a blood donor serosurvey.

22 Apr 2021

Numerous agents with anti-SARS-CoV-2 potential discovered with crystallographic screening

An international team of researchers focused on the macrodomain part of the non-structural protein 3 (Nsp3) gene product that SARS-CoV-2 uses to overturn the host cell’s natural antiviral response. The team provided a template that can help develop novel antivirals that are direct-acting and can combat the current pandemic.

16 Apr 2021

Researchers identify nonelectrical cells that transition the brain from plasticity to stability

Researchers exploring the developing central nervous system of fruit flies have identified nonelectrical cells that transition the brain from highly plastic into a less moldable, mature state.

8 Apr 2021

Comparing the transmission routes of two SARS-CoV-2 variants of concern

The research team had previously identified the UK variant as having higher viral RNA shedding than the D614G variant. However here, they wanted to compare the transmission of such variants through different routes of potential infection: direct contact, aerosol (airborne droplets), and fomite (objects which may be contaminated and therefore spread infectious agents).

30 Mar 2021

Researchers develop innovative biosensor that can detect and quantitate SARS-CoV-2 infection

Researchers have generated protease-activatable fluorescent and luminescent biosensors for SARS-CoV-2 MPro (main protease) and PLPro (papain-like protease) activity, one based on “flip” GFP (FlipGFP), and the other based on circularly permuted firefly luciferase (FFluc).

24 Mar 2021

Study suggests SARS-CoV-2 antibodies in breast milk are robust, neutralizing and durable

A new study addresses the issue of passive immunity to SARS-CoV-2 for newborns via breast milk.

23 Mar 2021

SLS announces appointment as an official distributor for the Merck Supelco® range of analytical products

SLS is pleased to announce further consolidation of its relationship with Merck through its appointment as an official distributor for the Supelco® range.

4 Mar 2021

SARS-CoV-2 variants do not substantially affect CD4+ and CD8+ T cell responses, study shows

Researchers from California in the United States have conducted a study showing that important adaptive immune responses to infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are not affected by four recently emerged variants of the virus.

3 Mar 2021

Understanding Absolute Stoichiometry of Oligomeric Protein Complexes Using SEC-MALS

News-Med interviews .... about using SEC-MALS to characterize the native oligomeric state of Nap proteins and their complexes.

24 Feb 2021

British and South African SARS-CoV-2 variants show some resistance to neutralizing antibodies

Researchers in France report impaired neutralization of two new SARS-CoV-2 variants by antibodies induced by vaccination or natural infection.

16 Feb 2021