Antigen News and Research

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Rational treatment strategies for SARS-CoV-2 derived from human pluripotent stem cells models

In a recent study posted to the bioRxiv* preprint server, researchers in Australia explored the molecular mechanisms of the pulmonary and cardiac complications caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection using human stem-cell-derived cardiac and lung cells.

27 Sep 2022

Study looks at boosting with variant-derived COVID vaccine

In a recent study posted to bioRxiv*, researchers at Washington University School of Medicine, St. Louis, demonstrated that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine booster elicits robust germinal center (GC) B cell responses.

26 Sep 2022

Study demonstrates how pan-sarbecovirus ORF7a protein plays a role in evading host immunity

In a new study, researchers demonstrated how sarbecovirus family down-regulates major histocompatibility complex-I (MHC-I) surface expression to evade cellular immunity.

26 Sep 2022

Systemic inflammation triggered by SARS-CoV-2 found to cause human testicular injury

In a new study, a team of researchers demonstrated that testicular injury in humans is not due to direct SARS-CoV-2 infection but more likely is an indirect effect of exposure to systemic inflammation or SARS-CoV-2 antigens.

26 Sep 2022

DNA nets effectively target the spike protein and detect COVID-19 virus at very low levels

Tiny nets woven from DNA strands can ensnare the spike protein of the virus that causes COVID-19, lighting up the virus for a fast-yet-sensitive diagnostic test – and also impeding the virus from infecting cells, opening a new possible route to antiviral treatment, according to a new study.

23 Sep 2022

New testing system for rapid detection of COVID-19

PCR tests have been hailed as the gold-standard in detecting and isolating COVID-19 cases. But they are more expensive than antigen tests and need a laboratory to process.

22 Sep 2022

Study explores the effect of age-associated B cells on COVID-19 vaccine-induced immunity

In a new study, a team of researchers explored the effect of immune checkpoint blockade (ICB)-induced expansion of age-associated B cells (ABCs) on COVID-19 vaccine-derived humoral immunity in patients with cancer and inborn errors of immunity (IEI).

22 Sep 2022

Population-wide cohort study detects increase in major arterial and venous thrombotic events immediately after COVID-19 diagnoses

In a new study, researchers explored the association between coronavirus disease 2019 (COVID-19) and vascular thrombotic events using a population-wide cohort study across England and Wales.

21 Sep 2022

Vaccination drives superior functional antibody breadth compared to natural infection with SARS-CoV-2

Researchers assessed the potency and breadth of antibody recognition and effector function among healthy and high-risk individuals following natural SARS-CoV-2 infection or mRNA COVID-19 vaccination.

21 Sep 2022

Researchers report development of a self-assembled trimeric RBD subunit vaccine able to prevent SARS-CoV-2 infection

The present study reported the development of a new self-assembled trimeric RBD subunit vaccine that could effectively prevent infection from SARS-CoV-2 variants, including the currently dominantly circulating Omicron variant.

21 Sep 2022

Vaccination-induced responses for Omicron subvariant neutralization

Researchers summarized existing data on SARS-CoV-2 Omicron variant’s sub-variant (BA.1, BA.1.1, BA.2, BA.2.12.1, BA.3, and BA.4/5) neutralization. They also performed a comparative assessment of cross-neutralizing responses of Omicron subvariants in comparison to the Wuhan-Hu-1 strain (prototype) antigen.

20 Sep 2022

Neutralizing antibody responses, breakthrough SARS-CoV-2 infections, and symptoms after booster BNT162b2 COVID-19 vaccinations

A new study evaluated neutralizing antibody (nAb) responses against the SARS-CoV-2 Omicron variant induced by booster vaccination with Pfizer-BioNTech’s BNT162b2 messenger ribonucleic acid vaccine.

20 Sep 2022

The potential of nanobody engineering in the development of SARS-CoV-2 antivirals and diagnostic tools

Researchers investigated nanobody engineering to develop antivirals and diagnostic tools against SARS-CoV-2.

20 Sep 2022

Monkeypox infection in a smallpox-vaccinated patient

In a recent study published in the Emerging Infectious Diseases journal, researchers at Madigan Army Medical Center assessed the characteristics of monkeypox infection in a patient vaccinated against smallpox.

20 Sep 2022

Molecular engineered low-cost highly effective RBD-based COVID vaccine

In a recent study posted to the bioRxiv* preprint server, an international team of researchers developed a second-generation severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) receptor binding domain (RBD) antigen (RBD-J6) by molecular engineering with two additional amino acid (aa) substitutions (S383D and L518D mutations) in a hydrophobic cryptic RBD core epitope to enhance stability and expression against SARS-CoV-2 variants of concern (VOCs).

19 Sep 2022

The relationship between antigen concentration and diagnostic test performance for SARS-CoV-2 on different types of samples

Researchers investigated how antigen concentration and viral load in different specimen types affected the performance of SARS-CoV-2 rapid diagnostic tests (RDTs).

19 Sep 2022

Monkeypox virus infection in an immunocompromised patient

Researchers assessed the manifestations of the monkeypox infection in an immunocompromised patient.

19 Sep 2022

Research examines the roles of cytokines during SARS-CoV-2 infection in rhesus macaques

In a recent study posted to the bioRxiv* preprint server, researchers in the United States assessed the role of two cytokines, interferon-gamma (IFN-γ) and interleukin-10 (IL-10), in regulating immune cell responses and inflammation early during severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in rhesus macaques.

18 Sep 2022

An improved COVID-19 vaccine shows promise against Omicron in experimental models

In a recent study published in the journal Science Translational Medicine, researchers in the United States designed a bivalent coronavirus disease 2019 (COVID-19) vaccine on the messenger ribonucleic acid (mRNA) platform.

18 Sep 2022

SARS-CoV-2 N escape mutations do not affect rapid antigen testing

A new study maps the escape mutations found in various strains of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) that could cause them to escape neutralization by antibodies or detection by rapid antigen tests that rely on antibody binding for a positive result.

16 Sep 2022

Antigen News and Research

Rational treatment strategies for SARS-CoV-2 derived from human pluripotent stem cells models

Study looks at boosting with variant-derived COVID vaccine

Study demonstrates how pan-sarbecovirus ORF7a protein plays a role in evading host immunity

Systemic inflammation triggered by SARS-CoV-2 found to cause human testicular injury

DNA nets effectively target the spike protein and detect COVID-19 virus at very low levels

New testing system for rapid detection of COVID-19

Study explores the effect of age-associated B cells on COVID-19 vaccine-induced immunity

Population-wide cohort study detects increase in major arterial and venous thrombotic events immediately after COVID-19 diagnoses

Vaccination drives superior functional antibody breadth compared to natural infection with SARS-CoV-2

Researchers report development of a self-assembled trimeric RBD subunit vaccine able to prevent SARS-CoV-2 infection

Vaccination-induced responses for Omicron subvariant neutralization

Neutralizing antibody responses, breakthrough SARS-CoV-2 infections, and symptoms after booster BNT162b2 COVID-19 vaccinations

The potential of nanobody engineering in the development of SARS-CoV-2 antivirals and diagnostic tools

Monkeypox infection in a smallpox-vaccinated patient

Molecular engineered low-cost highly effective RBD-based COVID vaccine

The relationship between antigen concentration and diagnostic test performance for SARS-CoV-2 on different types of samples

Monkeypox virus infection in an immunocompromised patient

Research examines the roles of cytokines during SARS-CoV-2 infection in rhesus macaques

An improved COVID-19 vaccine shows promise against Omicron in experimental models

SARS-CoV-2 N escape mutations do not affect rapid antigen testing

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