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Mouse monoclonal antibodies protect against SARS-CoV-2 wildtype, UK and South African variants

A new preprint research paper posted to the bioRxiv server reports on the ability of a set of neutralizing mouse antibodies to protect mice against multiple lineages of SARS-CoV-2.

8 Apr 2021

Bispecific antibodies neutralize SARS-CoV-2 and its variants

A new bioRxiv preprint study led by Joshua Tan from the National Institute of Allergy and Infectious Diseases, National Institutes of Health, involves generating bispecific antibodies using a new method cross-linking the antibodies with adjacent spike proteins using dual N-terminal domain/receptor binding domain specificity.

7 Apr 2021

CoVIg-19 Plasma Alliance announces outcomes of NIH-funded Phase 3 ITAC clinical trial

The CoVIg-19 Plasma Alliance today announced that the Phase 3 Inpatient Treatment with Anti-Coronavirus Immunoglobulin (ITAC) clinical trial sponsored and funded by the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health (NIH), did not meet its endpoints. No serious safety signals were raised in the trial.

7 Apr 2021

70% of SARS-CoV-2 infected in Wuhan still have IgG antibodies

The coronavirus disease (COVID-19) first emerged in late December 2019 in Wuhan, China. Though it has been more than one year since the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was reported, it is still unclear how long the antibodies persist in those who have recovered.

7 Apr 2021

Study suggests T-cells don't determine survival in severe COVID-19

In the study, which appeared on the pre-print server medRxiv, the team found that when the monkeys were reinfected, the T cell-depleted animals showed anamnestic immune responses, the enhanced reaction of the body's immune system to an antigen that is related to an antigen previously encountered.

6 Apr 2021

Study finds CD8+ T cell responses detect all major SARS-CoV-2 variants

There have been concerns that several SARS-CoV-2 variants have mutations that allow them to evade the immune system. A new study published in the Open Forum Infectious Diseases suggests otherwise. Led by Aaron AR Tobian of Johns Hopkins University School of Medicine, results showed that except for one from the B.1.351 variant, CD8+ T cells showed a broad response to all SARS-CoV-2 variants.

2 Apr 2021

Can asymptomatic COVID-19 confer long-term immunity?

Researchers examined the antibody responses in symptomatic and asymptomatic individuals recovered from COVID-19 to see if there was a discernable difference in their humoral immune responses and long-term protection from reinfection with SARS-CoV-2.

1 Apr 2021

Male fetuses impair the maternal and placental immune response to SARS-CoV-2 infection in pregnancy, finds study

The ongoing COVID-19 pandemic, caused by SARS-CoV-2, is now established to be more likely to lead to symptomatic and serious illness in males relative to females. This may extend as far back as pregnancy, suggests a recent study.

31 Mar 2021

Study finds rapid increase in IgG and IgA antibody levels following COVID-19 mRNA vaccination

A new study describes the kinetics of the antibody response to the earliest approved vaccines against COVID-19, which were developed on an mRNA platform.

30 Mar 2021

Determination of vaccine-elicited SARS-CoV-2 antibodies in breastmilk

A new study has analyzed the levels of SARS-CoV-2 antibodies elicited by the novel COVID-19 vaccines in breastmilk.

30 Mar 2021

Researchers develop novel nanoadjuvant COVID-19 vaccine candidate

Researchers at the National Center for Nanoscience and Technology of China, the Chinese Academy of Sciences (CAS), introduced a new vaccine, which compromises the spike protein’s receptor-binding domain (RBD) and the manganese nanoadjuvant (MnARK), inducing humoral and cellular responses.

29 Mar 2021

Single Sputnik V vaccine dose elicits robust immune response in previously infected individuals

A new preprint research paper posted to the medRxiv server describes successful immunization of the vaccinated population with a single dose of the Russian-made Sputnik V vaccine.

29 Mar 2021

Antibody agents effective at neutralizing European, South African, and United States SARS-CoV-2 variants

Researchers in the United States have demonstrated the effectiveness of three antibody agents at neutralizing recently emerged variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) – the agent responsible for the coronavirus disease 2019 (COVID-19) pandemic.

28 Mar 2021

New blood test makes it easier to follow the progression of multiple myeloma

A new method makes it much easier to follow the progression of multiple myeloma, a form of blood cancer.

26 Mar 2021

Longitudinal study of SARS-CoV-2 antibodies following vaccination

A longitudinal study of IgG antibody levels in vaccinated healthcare workers was recently uploaded to the preprint server medRxiv*, suggesting that IgG levels could be a reliable indicator of successful vaccination.

26 Mar 2021

New study may shed light on inflammatory bowel disease

Researchers have found an unexpected synergy between a T-cell stimulatory protein -- the ICOS ligand -- and interleukin-10, an immunoregulatory cytokine, to prevent inflammatory bowel disease in mice.

26 Mar 2021

Study observes correlation between COVID-19 mortality and autoantibodies in corticosteroid treated patients

Corticosteroid anti-inflammatory drugs have been applied to COVID-19 patients over the course of the pandemic, though the results are mixed. In a recent study, the outcomes for such patients are collated, demonstrating a striking correlation between the development of autoantibodies and mortality.

25 Mar 2021

Immunoglobulin News and Research

Mouse monoclonal antibodies protect against SARS-CoV-2 wildtype, UK and South African variants

Bispecific antibodies neutralize SARS-CoV-2 and its variants

CoVIg-19 Plasma Alliance announces outcomes of NIH-funded Phase 3 ITAC clinical trial

70% of SARS-CoV-2 infected in Wuhan still have IgG antibodies

Study suggests T-cells don't determine survival in severe COVID-19

Study finds CD8+ T cell responses detect all major SARS-CoV-2 variants

Can asymptomatic COVID-19 confer long-term immunity?

Male fetuses impair the maternal and placental immune response to SARS-CoV-2 infection in pregnancy, finds study

Study finds rapid increase in IgG and IgA antibody levels following COVID-19 mRNA vaccination

Determination of vaccine-elicited SARS-CoV-2 antibodies in breastmilk

Researchers develop novel nanoadjuvant COVID-19 vaccine candidate

Single Sputnik V vaccine dose elicits robust immune response in previously infected individuals

Antibody agents effective at neutralizing European, South African, and United States SARS-CoV-2 variants

New blood test makes it easier to follow the progression of multiple myeloma

Longitudinal study of SARS-CoV-2 antibodies following vaccination

New study may shed light on inflammatory bowel disease

Study observes correlation between COVID-19 mortality and autoantibodies in corticosteroid treated patients

Could an mRNA vaccine second dose reduce cellular immunity in previously infected individuals?

Reduced mRNA COVID-19 vaccine response in nursing home residents

Epitope antibody testing is effective in detecting immune responses to SARS-CoV-2

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