Antigen News and Research

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Modified SARS-CoV-2 receptor-binding domain could increase vaccine efficacy, says study

A team of researchers from the USA and China have engineered a receptor-binding domain (RBD) that they claim improves the immunogenicity of multivalent SARS-CoV-2 vaccines. Their study, which was released on the bioRxiv* in November 2020, may help advance even more efficacious SARS-CoV-2 vaccine candidates in the future.

23 Nov 2020

Chicago seroprevalence study shows COVID-19 cases 16 times higher than currently predicted

A startling new case study of Chicago, led by a team of researchers at Northwestern University in Illinois, USA, suggests a 16-fold higher incidence of SARS-CoV-2 infection than previously thought. This is judging from seroprevalence (antibody presence blood testing) figures, rather than the number of RT-PCR-positives reported there (via swab sample testing of symptomatic patients).

23 Nov 2020

Study suggests neutralizing SARS-CoV-2 antibodies offer protection against reinfection

A new study published in November 2020 on the preprint server medRxiv* indicates that the chances of symptomatic infection are indeed much lower among the population with antibodies to the virus.

22 Nov 2020

Inexpensive, rapid-turnaround COVID-19 tests could eliminate the virus within weeks

Testing half the population weekly with inexpensive, rapid-turnaround COVID-19 tests would drive the virus toward elimination within weeks-- even if those tests are significantly less sensitive than gold-standard clinical tests, according to a new study published today by University of Colorado Boulder and Harvard University researchers.

20 Nov 2020

Lonza provides expansive selection of high-resolution HLA-typed primary cells to boost drug development

Lonza has announced that it now provides an expansive selection of high-resolution Human Leukocyte Antigen (HLA)-typed primary cells spanning all major cell and tissue types.

From Lonza 20 Nov 2020

Mosaic RBD nanoparticles elicit neutralizing antibodies against SARS-CoV-2

The researchers show that the mice immunized with homotypic or mosaic nanoparticles produced broad binding and neutralizing responses, in contrast to plasma antibodies elicited in humans by SARS-CoV-2 infection. The RBD nanoparticles induced cross-reactive IgG responses in the immunized mice.

19 Nov 2020

Seroprevalence meta-analysis predicts 643 million already infected by SARS-CoV-2 globally

A recent systematic review and meta-analysis conducted by a team of international scientists reveal low seroprevalence of anti-severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antibodies in the general population.

19 Nov 2020

Most COVID-19 convalescent individuals have long-lasting memory T cell responses

Recently, researchers from the Huazhong University of Science and Technology, China, and the University of Duisburg-Essen, Germany, conducted a comprehensive analysis of memory T cell responses against SARS-CoV-2 in individuals who have recovered from COVID-19.

18 Nov 2020

New understanding of glycan signatures of the SARS-COV-2 S1 spike protein

A team of scientists from the University of Oxford, UK, has revealed that site-specific glycosylation differs between spike proteins derived from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and a viral vector-based vaccine candidate.

18 Nov 2020

Optimizing SARS-COV-2 inactivation for COVID-19 research at lower biosafety levels

Researchers at Montana State University have validated and compared two methods for inactivating the causative agent of coronavirus disease 2019 (COVID-19) that would enable the virus to be studied at a lower biosafety level (BSL) than the one currently required.

18 Nov 2020

SARS-CoV-2 causes a unique cytokine storm, study finds

A new study published on the preprint server medRxiv* in November 2020 reports some of the unique elements of COVID-19-induced CRS and how understanding these distinctive characteristics of the disease could help in formulating specific interventions and therapies.

18 Nov 2020

Negative biopsies during active surveillance for prostate cancer are associated with long-term outcomes

Can early-stage prostate cancer "vanish" during follow-up? More likely the cancer is just "hidden"--either way, negative biopsies during active surveillance for prostate cancer are associated with excellent long-term outcomes, reports a study in The Journal of Urology®.

18 Nov 2020

Bioelectronic rapid test for COVID-19

A recent study presents a bioelectronic sensor platform to detect protein at the single-molecule level that is simple, rapid, and robust enough for widespread POC (point-of-care) or bedside application.

18 Nov 2020

Males may have higher but more transient SARS-CoV-2 immunity than females post-infection

Adding another piece to the puzzle that is coronavirus disease 2019 (COVID-19) serology, a new study published on the preprint server medRxiv* in November 2020 suggests that males have stronger but more transient anti-severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) protective immunity than females.

17 Nov 2020

Nanobodies: unharnessed potential in COVID-19 treatment

A new study published in the Journal of Biomolecular Structure and Dynamics in October 2020 discusses the use of nanobodies in diagnosing and treating this deadly disease.

16 Nov 2020

Global health leaders discuss the urgent funding needs of ACT Accelerator

Heads of state, global health leaders, scientists, and the private sector have come together at the Paris Peace Forum this week to discuss how to meet the urgent funding needs of the ACT Accelerator.

16 Nov 2020

Study reveals key role of IL-33 signaling molecule in parasite infections, other health conditions

De'Broski Herbert has a philosophy that's guided his career researching helminths, or parasitic worms, and their interaction with their hosts' immune systems: "Follow the worm."

15 Nov 2020

New saliva-based test found to accurately detect the presence of SARS-CoV-2 antibodies

A new saliva-based test developed by a team at Johns Hopkins Bloomberg School of Public Health has been found to accurately detect the presence of antibodies to SARS-CoV-2, the virus that causes COVID-19, from small samples of saliva, according to a study led by Bloomberg School researchers.

15 Nov 2020

SARS-CoV-2 immunity may last over six months through antibody evolution and B cell memory

With the coronavirus disease 2019 (COVID-19) pandemic infecting over 52.7 million people around the world, and killing over 1.2 million, a large amount of research has tried to better understand immune responses against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the pathogen that causes COVID-19.

15 Nov 2020

Promising SARS-CoV-2 N epitope for more accurate diagnostic and surveillance antibody testing

A new study published on the preprint server bioRxiv in November 2020 describes the virus's N protein as a promising epitope for serology.

12 Nov 2020

Antigen News and Research

Modified SARS-CoV-2 receptor-binding domain could increase vaccine efficacy, says study

Chicago seroprevalence study shows COVID-19 cases 16 times higher than currently predicted

Study suggests neutralizing SARS-CoV-2 antibodies offer protection against reinfection

Inexpensive, rapid-turnaround COVID-19 tests could eliminate the virus within weeks

Lonza provides expansive selection of high-resolution HLA-typed primary cells to boost drug development

Mosaic RBD nanoparticles elicit neutralizing antibodies against SARS-CoV-2

Seroprevalence meta-analysis predicts 643 million already infected by SARS-CoV-2 globally

Most COVID-19 convalescent individuals have long-lasting memory T cell responses

New understanding of glycan signatures of the SARS-COV-2 S1 spike protein

Optimizing SARS-COV-2 inactivation for COVID-19 research at lower biosafety levels

SARS-CoV-2 causes a unique cytokine storm, study finds

Negative biopsies during active surveillance for prostate cancer are associated with long-term outcomes

Bioelectronic rapid test for COVID-19

Males may have higher but more transient SARS-CoV-2 immunity than females post-infection

Nanobodies: unharnessed potential in COVID-19 treatment

Global health leaders discuss the urgent funding needs of ACT Accelerator

Study reveals key role of IL-33 signaling molecule in parasite infections, other health conditions

New saliva-based test found to accurately detect the presence of SARS-CoV-2 antibodies

SARS-CoV-2 immunity may last over six months through antibody evolution and B cell memory

Promising SARS-CoV-2 N epitope for more accurate diagnostic and surveillance antibody testing

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