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Certain intestinal bacteria induce cross-reactive IgA responses to the SARS-CoV-2 spike RBD

A new study finds that human gut bacteria can induce antibodies of the immunoglobulin A (IgA) subtype that cross-react with the SARS-CoV-2 spike RBD.

15 Aug 2021

World-first trial of third dose COVID-19 booster vaccine shows improved protection in transplant patients

Scientists with the Ajmera Transplant Centre at UHN have conducted a first-in-the-world randomized placebo-controlled trial of third dose COVID-19 booster vaccine for transplant patients that shows substantially improved protection.

14 Aug 2021

L452R mutations may have triggered the emergence of several COVID-19 variants

Most of the recently risen coronavirus variants of interest or concern -- delta, kappa, epsilon, iota and lambda -- are universally carrying a mutation in amino acid L452 of the Spike protein that helps the virus bind to host cells.

13 Aug 2021

How replication and recombination contribute to emergence of SARS-CoV-2 variants

The coronavirus disease 2019 (COVID-19) pandemic has been caused by the rapid outbreak of a novel coronavirus, namely, severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). SARS-CoV-2 was first reported in late December 2019 in Wuhan, China. Since then, the virus has already claimed more than 4.3 million lives worldwide.

13 Aug 2021

SARS-CoV-2 variants containing L452R spike mutation more resistant to antibody-mediated neutralization

A team of scientists from Frankfurt, Germany, has recently explored the efficacy of vaccine- or infection-induced antibodies and therapeutic monoclonal antibodies in neutralizing kappa and delta variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

12 Aug 2021

Camelid nanobody anti-SARS-CoV-2 drug candidates

In a research paper recently published in the journal eLife, researchers from several US institutions have developed a nanobody-based candidate drug that effectively prevents and suppresses severe SARS-CoV-2 infection in animals.

12 Aug 2021

South Australian-developed SARS-CoV-2 vaccine shows promise to prevent COVID-19 lung infection

A South Australian-developed SARS-CoV-19 vaccine is preparing to progress to the final stages of human clinical trials after early animal testing confirmed its safety and effectiveness in preventing COVID-19 lung infection.

12 Aug 2021

SARS-CoV-2 detection by machine learning surface-enhanced Raman spectroscopy

Surface-enhanced Raman spectroscopy is a highly sensitive molecule characterization method, significantly more sensitive than ordinary Raman spectroscopy due to the excitation of Raman modes matching the plasmon resonance frequency of the surface metal utilized, usually gold, silver, or copper.

11 Aug 2021

VPS29 gene facilitates coronavirus cell entry

In a research paper recently uploaded to the bioRxiv* preprint server by Poston et al. (August 8th, 2021), common host factors amongst several zoonotic pathogens are explored by CRISPR-Cas9 screening in human lung cells, focusing in particular on the betacoronavirus genus.

11 Aug 2021

Evaluation of mRNA vaccine responses with a surrogate SARS-CoV-2 viral neutralization assay

In the current study, the authors evaluate several different competitive ELISAs that could be used to measure serum antibodies.

11 Aug 2021

COVID-19 vaccine likely protects people living with HIV, study shows

A Johns Hopkins Medicine research team has shown that people living with the human immunodeficiency virus (HIV) are likely to be protected against SARS-CoV-2, the virus that causes COVID-19, if they are fully vaccinated.

11 Aug 2021

COVID-19 booster shot in autumn will effectively protect against existing and future variants

Scientists at the University of Nottingham have confirmed that an autumn 'booster' dose of a Covid-19 vaccine will be an effective way to protect people from existing, and potentially future, variants of concern.

11 Aug 2021

Plant-based virus-like particle vaccine induces durable immune response against SARS-CoV-2 variants

Scientists from Germany and Belgium have recently described the immunogenicity of a plant-based virus-like particle vaccine against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The vaccine induces robust antibody and T cell responses for at least 6 months. Moreover, the vaccine demonstrates potent neutralizing efficacy against the B.1.1.7, B.1.351, and P1 variants of SARS-CoV-2.

11 Aug 2021

Study defines SARS-CoV-2 antibodies associated with neutralization and effector functions

A new study explores the polyclonal antibody response to SARS-CoV-2 in greater detail.

10 Aug 2021

Natural vs. vaccine-induced COVID-19 immunity

A new paper discusses the protection offered by immunity against COVID-19 following vaccination as compared to natural infection.

10 Aug 2021

IMBA researchers may have found the "Achilles' heel" of SARS-CoV-2 virus

Researchers identify two sugar-binding proteins that impede the viral entry of circulating SARS-CoV-2 variants.

10 Aug 2021

New platform can quickly identify common mutations on the SARS-CoV-2 virus

Researchers at the University of Colorado Boulder have developed a platform which can quickly identify common mutations on the SARS-CoV-2 virus that allow it to escape antibodies and infect cells.

10 Aug 2021

SARS-CoV-2 variants and their ability to infect mice

A new study published on the bioRxiv* preprint server has conducted in silico studies along with in vitro, in vivo, and in situ observations and indicated the mouse adaptation of SARS-CoV-2.

10 Aug 2021

Study shows impaired SARS-CoV-2 mRNA vaccine antibody response in individuals with chronic conditions

A recent study in Colorado used real-world data to evaluate if individuals with chronic conditions have reduced antibody response to COVID-19 mRNA vaccines. The study investigated whether some medical conditions may impact antibody response to the mRNA vaccines.

9 Aug 2021

Study of antibody responses to COVID-19 mRNA vaccine in convalescent individuals

In addition to clinical trials conducted to determine the safety and efficacy of the mRNA vaccines, additional studies began describing the serological response to the vaccines under "real-world" conditions, especially with the onset of the SARS-CoV-2 variants and case reports of vaccine escape.

9 Aug 2021

Spike Protein News and Research

Certain intestinal bacteria induce cross-reactive IgA responses to the SARS-CoV-2 spike RBD

World-first trial of third dose COVID-19 booster vaccine shows improved protection in transplant patients

L452R mutations may have triggered the emergence of several COVID-19 variants

How replication and recombination contribute to emergence of SARS-CoV-2 variants

SARS-CoV-2 variants containing L452R spike mutation more resistant to antibody-mediated neutralization

Camelid nanobody anti-SARS-CoV-2 drug candidates

South Australian-developed SARS-CoV-2 vaccine shows promise to prevent COVID-19 lung infection

SARS-CoV-2 detection by machine learning surface-enhanced Raman spectroscopy

VPS29 gene facilitates coronavirus cell entry

Evaluation of mRNA vaccine responses with a surrogate SARS-CoV-2 viral neutralization assay

COVID-19 vaccine likely protects people living with HIV, study shows

COVID-19 booster shot in autumn will effectively protect against existing and future variants

Plant-based virus-like particle vaccine induces durable immune response against SARS-CoV-2 variants

Study defines SARS-CoV-2 antibodies associated with neutralization and effector functions

Natural vs. vaccine-induced COVID-19 immunity

IMBA researchers may have found the "Achilles' heel" of SARS-CoV-2 virus

New platform can quickly identify common mutations on the SARS-CoV-2 virus

SARS-CoV-2 variants and their ability to infect mice

Study shows impaired SARS-CoV-2 mRNA vaccine antibody response in individuals with chronic conditions

Study of antibody responses to COVID-19 mRNA vaccine in convalescent individuals

Achieving and maintaining ISO/IEC 27001 and BS 10012 certifications

Expanding research and clinical options for children with cancer

Examining how pain could play a direct protective role in the gut

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