Glycans News and Research

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SARS-CoV-2 spike pocket is a putative target for antiviral design

In a methodologically rigorous study, researchers from the University of Oxford have recently shown how the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike glycoprotein harbors a lipid-binding pocket which modulates the stability of the prefusion trimer and provides conformational shielding from antibodies. Their findings are currently freely available on the bioRxiv* preprint server.

16 Aug 2020

De novo designed SARS-CoV-2 nanoparticle vaccine

In light of the continuing threat to public health, social functioning, and economic activity posed by the COVID-19 pandemic, scientists are working urgently to bring out a vaccine that is both safe and effective, and capable of mass production. A new paper published on the preprint server bioRxiv* in August 2020 shows that such a vaccine may be produced by using arrays of one severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) protein on a nanoparticle platform.

14 Aug 2020

C-type lectin receptors play a role in SARS-CoV-2 infection

A new study published on the preprint server bioRxiv in August 2020 confirms and extends earlier findings showing that a type of sugar-based receptor on innate immune cells promotes the entry of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) into other cells that carry the viral receptor, angiotensin-converting enzyme 2 (ACE2).

12 Aug 2020

Researchers identify a useful biomarker for intestinal diseases

Enzymes used by bacteria to break down mucus in the gut could provide a useful biomarker for intestinal diseases, according to new research published in Nature Communications.

11 Aug 2020

SARS-CoV-2 spike protein recognized by innate immune receptors in a glycan-dependent way

The spread of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) depends on its ability to infect new host cells following its replication and release from infected cells. This pivots on its ability to bind to cell surface receptors like the ACE2 enzyme.

3 Aug 2020

War of sugars - estrogen provides protection in COVID-19

Now a new study published on the preprint server bioRxiv in July 2020 reports that sex hormones could affect the function of the fusion protein that is dependent upon the human ACE2 receptor, thus preventing the entry of the virus into the host cell.

31 Jul 2020

Emergent SARS-CoV-2 D614G spike mutation more infective due to "open" morphology

Researchers from the Los Alamos National Laboratory and Duke Human Vaccine Institute & Department of Surgery demonstrated that globally prevalent severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) with the amino acid substitution D614G in the spike protein is much more infective due to profitable binding encounters with the host receptors.

28 Jul 2020

Seaweed extract outperforms remdesivir in inhibiting SARS-CoV-2 in cell studies

In a test of antiviral effectiveness against the virus that causes COVID-19, an extract from edible seaweeds substantially outperformed remdesivir, the current standard antiviral used to combat the disease.

24 Jul 2020

Scientists report two new cryo-EM structures of SARS-Cov-2 spike protein

Scientists report two new cryo-EM structures representing the pre- and postfusion conformations of the full-length SARS-CoV-2 spike (S) protein, an essential viral component responsible for host cell entry and the spread of infection.

22 Jul 2020

Study captures unexpected features of SARS-Cov-2 spike protein

The rod-like spike proteins on the surface of SARS CoV-2 are the tip of the spear of the COVID-19 pandemic.

22 Jul 2020

Glycome shift in epidermal stem cells could serve as potential biomarker of aging

Age shows nowhere better than on the skin. The ravages of time on skin and the epidermal stem cells that differentiate to replenish its outer layer have been hypothesized, but there has been no method to evaluate their aging at the molecular level.

21 Jul 2020

Involvement of nicotine receptors in COVID-19

Researchers from the University of Bristol, Oxford Brookes University and the University of California San Diego neatly demonstrated how the spike protein of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) exhibits high affinity for nicotinic acetylcholine receptors (nAChRs), with significant implications for coronavirus disease (COVID-19) pathology and infectivity. Their findings are published on the bioRxiv* preprint server.

20 Jul 2020

Compelling study shows heparin may protect against COVID-19

A compelling new study conducted by an international team of researchers has demonstrated that the widely used blood-thinning medication - heparin - can block infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the agent that causes coronavirus disease 2019 (COVID-19).

16 Jul 2020

Study of glycosylation on SARS-CoV-2 spike protein

The first intimation of the current COVID-19 crisis came with the news of severe pneumonic illness caused by an unknown agent in a Chinese city called Wuhan, issued on the last day of 2019. Following this, researchers found the cause to be a novel coronavirus, closely related to the earlier SARS virus, now called severe acute respiratory syndrome coronavirus 2.

8 Jul 2020

Spike proteins of SARS-CoV-2 covered by mobile glycans that shield its surface

A new study of the structural dynamics of the SARS-CoV-2 spike protein published in the preprint server bioRxiv in July 2020 reports on the epitopes that could be possible immune targets for the development of vaccines.

7 Jul 2020

Striking CryoEM image of SARS-CoV-2

A new study by researchers from the UK and Germany and published on the preprint server bioRxiv in June 2020 reports the results of a detailed study of the S protein on the intact virus, using cryoelectron microscopy (cryoEM) and tomography. This could help understand the conformation of the S protein on the virion and how it interacts with neutralizing antibodies.

30 Jun 2020

A glycan analysis of SARS-CoV-2 ACE2 complex

Researchers in the U.S. have produced molecular dynamic simulations of the Spike protein found on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and its interaction with the host cell receptor angiotensin-converting enzyme 2 (ACE2).

29 Jun 2020

Scientists create 'all-atom' model of SARS-CoV-2 spike protein

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causes the coronavirus disease (COVID-19), an illness that has spread across the globe, infecting more than 9 million people. The novel coronavirus invades cells through "spike proteins," which sticks and binds itself to a host cell.

23 Jun 2020

Researchers produce first fully-glycosylated full-length SARS-CoV-2 spike protein models

The virus SARS coronavirus 2 (SARS-CoV-2) is the known cause of coronavirus disease 2019 (COVID-19). The "spike" or S protein facilitates viral entry into host cells.

22 Jun 2020

Mutational targets of SARS-CoV-2 receptor-binding domain for vaccine-antiviral development

The COVID-19 pandemic has spread throughout the whole world within six months, causing millions of infections and hundreds of thousands of deaths. Yet there is no effective vaccine or antiviral to deal with it.

18 Jun 2020