Antigen News and Research

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Longitudinal seroprevalence study among pregnant people indicates waning of immunity from natural SARS-CoV-2 infections

Researchers evaluated the seroprevalence and durability of antibodies against SARS-CoV-2 nucleocapsid protein among pregnant individuals and investigated transplacental antibody transfer.

3 Jan 2023

Bacterial outer membrane vesicles: utility as vaccines and novel engineering approaches

Scientists have described the utility of gram-negative bacteria-derived outer membrane vesicles as vaccines and methods to expand their applications.

3 Jan 2023

What is the global state of SARS-CoV-2 seroprevalence in children?

Researchers conducted a systematic review to assess global pediatric SARS-CoV-2 seroprevalence.

3 Jan 2023

Effects of hybrid immunity on humoral immune response following COVID mRNA vaccination in a cohort of essential and frontline workers

Researchers longitudinally evaluated humoral immune responses to the second and third doses of COVID-19 mRNA vaccines among individuals with and without prior history of SARS-CoV-2 infections.

3 Jan 2023

Novel approach may prevent antibodies from triggering immune rejection of transplant cells

Researchers at UCSF have developed a novel, potentially life-saving approach that may prevent antibodies from triggering immune rejection of engineered therapeutic and transplant cells.

2 Jan 2023

Alveolar macrophages present as antigens to promote virus-specific CD8+ T cell expansion

The human immune system is a highly complex network of cells, signals, and responses that is tightly regulated to ensure that the body can fight off infection without damaging its own tissues.

28 Dec 2022

Exploring T cell responses during COVID-19 breakthrough infection

Researchers assessed the de novo and recall T cell responses during coronavirus disease 2019 (COVID-19) breakthrough infection.

28 Dec 2022

An estimated 19 million US adults living with long-COVID

In a recent study published in the journal Clinical Infectious Diseases, a team of researchers examined the risk factors and prevalence and impact of long coronavirus disease (COVID) among a representative sample of adults in the United States (U.S.) and reported that close to 19 million U.S. adults suffer from long COVID.

26 Dec 2022

Researchers present a new strategy for self-adjuvanting vaccine development

This new article publication from Acta Pharmaceutica Sinica B, discusses a fully synthetic Tn-based three-component cancer vaccine using covalently linked TLR4 ligand MPLA and iNKT cell agonist KRN-7000 as built-in adjuvant effectively protects mice from tumor development.

23 Dec 2022

Novel mRNA-lipid nanoparticle vaccine encoding four mpox virus surface proteins generates robust immune responses against orthopoxviruses

Researchers described a messenger ribonucleic acid (mRNA)-lipid nanoparticle monkeypox vaccine encoding four conserved monkeypox virus surface proteins which induced monkeypox virus-specific immunity and elicited heterologous protection when challenged with lethal vaccinia virus.

23 Dec 2022

High efficacy of SARS-CoV-2 vaccines in preventing COVID-19 deaths in children and adolescents

A new study evaluated the effectiveness of coronavirus disease 2019 (COVID-19) vaccines in Argentinian children when severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Delta and Omicron were predominant.

23 Dec 2022

Beta-containing COVID-19 booster vaccine found to cross-neutralize variants in non-human primates

A new paper presents preliminary evidence that a new vaccine candidate, designed to boost immunity in already immunized individuals, and containing the adjuvanted Beta spike variant protein antigen, can induce a potent cross-neutralizing antibody response in non-human primate models that is detectable for up to three months.

23 Dec 2022

Simple laser irradiation speeds up the detection of very small amounts of proteins

Protein detection based on antigen–antibody reaction is vital in early diagnosis of a wide range of diseases. How to effectively detect proteins, however, has frequently bedeviled researchers.

22 Dec 2022

Extracellular vesicles enhance cancer immunotherapy

Nano-sized membrane bubbles known as extracellular vesicles activate the immune system in mice and seem to render their tumors sensitive to a type of immunotherapy drug called a checkpoint inhibitor.

22 Dec 2022

T-cell immunity remains effective against SARS-CoV-2 Omicron subvariants

Omicron subvariants effectively escape B-cell immune responses by modifying neutralizing antibody epitopes.

21 Dec 2022

New methods can advance the development of rapid diagnostics for many infectious diseases

Two companion studies report new artificial intelligence approaches for identification of molecular "fingerprints" for specific infections. The methods, used here to derive a fingerprint for COVID-19, can advance the development of rapid diagnostics for many infectious diseases.

21 Dec 2022

SARS-CoV-2 and human cold coronavirus OC43 inhibit stress granule formation through Nsp15 protein

Researchers investigated the mechanisms through which the human common cold Betacoronavirus OC43 (HCoV-OC43) and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) inhibit the formation of stress granules.

21 Dec 2022

Exploring environmental viral emissions after SARS-CoV-2 Human challenge

A recent study captured the dynamics of pre-symptomatic SARS-CoV-2 emissions and reported the extent, magnitude, and routes of viral transmission are heterogeneous, with nasal mucosa being an important source of viral transmission.

21 Dec 2022

Withdrawal of COVID-19 mitigation measures resulted in a rebound in Streptococcus pneumoniae cases in Germany

Researchers from Germany conducted a population-based surveillance study to ascertain the etiology of community acquired pneumonia (CAP) during the re-emergence of viral and bacterial respiratory diseases after the relaxation of coronavirus disease 2019 (COVID-19) containment and mitigation measures.

20 Dec 2022

Rising Medicare costs linked to increased use of new prostate cancer therapies

Medicare costs for treatment of metastatic prostate cancer have risen sharply within the last 15 years – reflecting increased use of new medications under Medicare Part D, reports a study in Urology Practice, an Official Journal of the American Urological Association.

20 Dec 2022

Antigen News and Research

Longitudinal seroprevalence study among pregnant people indicates waning of immunity from natural SARS-CoV-2 infections

Bacterial outer membrane vesicles: utility as vaccines and novel engineering approaches

What is the global state of SARS-CoV-2 seroprevalence in children?

Effects of hybrid immunity on humoral immune response following COVID mRNA vaccination in a cohort of essential and frontline workers

Novel approach may prevent antibodies from triggering immune rejection of transplant cells

Alveolar macrophages present as antigens to promote virus-specific CD8+ T cell expansion

Exploring T cell responses during COVID-19 breakthrough infection

An estimated 19 million US adults living with long-COVID

Researchers present a new strategy for self-adjuvanting vaccine development

Novel mRNA-lipid nanoparticle vaccine encoding four mpox virus surface proteins generates robust immune responses against orthopoxviruses

High efficacy of SARS-CoV-2 vaccines in preventing COVID-19 deaths in children and adolescents

Beta-containing COVID-19 booster vaccine found to cross-neutralize variants in non-human primates

Simple laser irradiation speeds up the detection of very small amounts of proteins

Extracellular vesicles enhance cancer immunotherapy

T-cell immunity remains effective against SARS-CoV-2 Omicron subvariants

New methods can advance the development of rapid diagnostics for many infectious diseases

SARS-CoV-2 and human cold coronavirus OC43 inhibit stress granule formation through Nsp15 protein

Exploring environmental viral emissions after SARS-CoV-2 Human challenge

Withdrawal of COVID-19 mitigation measures resulted in a rebound in Streptococcus pneumoniae cases in Germany

Rising Medicare costs linked to increased use of new prostate cancer therapies

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