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Researchers identify six “words” used by specific immune cells to call up immune defense genes

UCLA life scientists have identified six "words" that specific immune cells use to call up immune defense genes -- an important step toward understanding the language the body uses to marshal responses to threats.

13 May 2021

Tapeworm infection drug blocks SARS-CoV-2 damage in the lungs

New research published in the journal Nature found the presence of SARS-CoV-2 in the lungs resulted in abnormal pneumocytes and spike protein-mediated cell fusion. Their findings also showed that TMEM16F protein activation induces cell fusion. Therefore, drugs inhibiting the TMEM16F/Anoctamin6 calcium-activated ion channel, such as niclosamide, could serve as potential treatments for reducing the severity of COVID-19 infection.

12 Apr 2021

Researchers identify novel SARS-CoV-2 variant unregistered on genomic sequence databases

A team of scientists from the University of California Santa Cruz, USA, recently identified a novel variant (B.1.x) of SARS-CoV-2 that might be circulating in at least 20 US states and six countries globally.

7 Apr 2021

Natural selection and adaptation of SARS-CoV-2 in mammals

Researchers of the Hubei University of Medicine, China, have analyzed several mutations in different variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from mammal species that suggest natural selection and host adaptation are occurring in the virus.

6 Apr 2021

South Africa SARS-CoV-2 variant B.1.351 easily escapes Sputnik vaccine

A new preprint research paper posted to the medRxiv* server reports on vaccine resistance data that pushes the end of the pandemic further away.

6 Apr 2021

New study maps SARS-CoV-2 and host protein interactions in detail

A new study has developed a systemic map detailing the mechanistic interactions and disruptions between severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its host cell.

18 Mar 2021

Natural virus-induced immunity protective against UK and South African SARS-CoV-2 variants in hamster study

As new variants of SARS-CoV-2 continue to emerge, fueling the continued spread of the COVID-19 pandemic, a new study offers encouragement.

12 Mar 2021

SARS-CoV-2 proteins are potent suppressors of innate immunity

A new study describes the strong immune-suppressing activity of SARS-CoV-2 genes, among other coronavirus genes.

5 Mar 2021

Identification of neutralizing IFNL3 autoantibodies in severe COVID-19 cases

Scientists have recently developed a novel alternative molecular display technology called Molecular Indexing of Proteins by Self Assembly (MIPSA). Their research explains how this technology overcomes the critical disadvantages of PLATO and other full-length protein array technologies.

5 Mar 2021

SARS-CoV-2 ORF7a mutation limits host immune suppression, finds study

Researchers have identified a high variability in the C-terminal end of ORF7a in SARS-CoV-2 sequences collected from around the globe. They noted that mutations result in a defective suppression of interferon and lowered replication rate.

25 Feb 2021

The origin of SARS-CoV-2 furin cleavage site remains a mystery

A new study discusses the origin of the furin cleavage site on the SARS-CoV-2 spike protein, which is responsible for the virus’s relatively high infectivity compared to relatives in the betacoronavirus subgenus.

17 Feb 2021

Molecular surveillance of SARS-CoV-2 spike protein mutations using CovRadar

In a recent bioRxiv preprint research paper, scientists from Germany discuss how they made sequence information more easily accessible for epidemiologists and virologists.

7 Feb 2021

Why SARS-CoV-2 B.1.1.7 is more virulent

A new preprint research paper by scientists from Sweden and India attempts to provide a preliminary answer to these questions using computational modeling. The research, which appears on the bioRxiv* server, predicts increased virulence with the new variant. If validated, this could help public health authorities prepare for new variants' possible impact as they emerge.

2 Feb 2021

New platform using green algae tests for SARS-CoV-2 virus

Researchers at the University of California, San Diego, have demonstrated the potential of using green algae to make recombinant viral proteins that could be used in large scale assays to detect antibodies against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) - the agent that causes coronavirus disease 2019 (COVID-19).

1 Feb 2021

New platform for detecting and monitoring SARS-CoV-2 antibody responses

Researchers in the U.S. have released a new study that describes a powerful but inexpensive tool designed to detect and monitor specific antibodies to SARS-CoV-2 over time.

1 Feb 2021

Codon frequency optimization shows SARS-CoV-2 antiviral potential

A study conducted by researchers in the US has revealed that optimization of codon for bacterial expression causes the production of an inactive enzyme non-structural protein 12 (Nsp12), a catalytic subunit of RNA-dependent RNA polymerase of SARS-CoV-2.

26 Jan 2021

Researchers update automated computation tool for SARS-CoV-2 genome analysis

Researchers updated a previous version of an automated tool to include SARS-CoV-2 genome analysis. Genome analysis using the freely available software could help track the evolution of the virus and promptly identify variants that increase viral transmission or virulence.

22 Jan 2021

New SARS-CoV-2 variant emerges in the U.S.

Even as the rollout of vaccines all over the world brings a glimmer of hope that the current coronavirus disease 2019 (COVID-19) pandemic may end in the near future, new variants continue to emerge, some with the potential to escape vaccine-induced or therapeutic antibodies. Now, a new preprint research paper published on the bioRxiv server describes a new American variant that may have become the dominant strain in the USA.

18 Jan 2021

Antibody recognition of linear SARS-CoV-2 epitopes preserved in mutated B.1.1.7 strain

In a recent medRxiv research paper, the US scientists examined the effects of non-synonymous mutations in the circulating B.1.1.7 strain of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on linear antibody epitope signal for viral spike glycoprotein and nucleoprotein – and demonstrated that mutations should not result in immune evasion.

11 Jan 2021

High-affinity SARS-CoV-2 RBD drives mutation spread, forms basis of new COVID-19 inhibitor

Now, an intriguing recent study appeared on the bioRxiv * preprint server describes the use of in vitro evolution to elicit affinity maturation of the viral receptor-binding domain (RBD) of the spike protein to bind the host cell angiotensin-converting enzyme 2 (ACE2) with greater affinity.

7 Jan 2021