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Man takes 217 COVID vaccines with no ill effects, shows immune boost

A case report of a 62-year-old man receiving 217 SARS-CoV-2 vaccinations over 29 months reveals no adverse effects, increased T-cells, and spike-specific antibodies, providing unique insights into the effects of hyper-vaccination on immune responses.

7 Mar 2024

Intensive fasting boosts red blood cells' immune powers against COVID-19, study finds

Researchers found that short-term intensive fasting enhances the immune function of red blood cells, including their ability to combat SARS-CoV-2, without affecting their oxygen-carrying capacity. The study reveals that this fasting regimen popular in Asia could offer a multifaceted benefit by amplifying the body's defenses without compromising essential functions.

4 Sep 2023

Antibiotics accelerate metastatic bone growth in mice with melanoma by depleting intestinal flora

The use of broad-spectrum antibiotics in mice with malignant melanoma, an aggressive form of skin cancer, accelerated their metastatic bone growth, likely because the drugs depleted the mice's intestinal flora and weakened their immune response, according to a new study by researchers at Emory University in Atlanta.

12 Sep 2022

Gut microbiota-derived metabolites offer protection against SARS-CoV-2

A new study investigated how the gut microbiome confers immunity to mammalian hosts against SARS-CoV-2 intranasal infection by generating short-chain fatty acids.

5 Aug 2022

Study evaluates if adults with obesity and a history of SARS-CoV-2 infection demonstrate poorer T cell immunity

Researchers assessed the association between obesity and T cell frequencies specific to the SARS-CoV-2 antigen.

1 Jul 2022

Study shows circular RNA vaccine provides robust protection against SARS-CoV-2 in mice and rhesus macaques

Researchers investigated the effectiveness of a circRNA vaccine against SARS-CoV-2 and its Delta and Omicron variants, which elicited significant antibody and T-cell responses in mice and rhesus macaques.

6 Apr 2022

ACE2 decoy receptor with robust neutralization against Omicron subvariants shows therapeutic potential

Researchers demonstrated the inhalation of an ACE2 decoy receptor, sACE22.v2.4-IgG1, increases survival and ameliorates lung injury in K18-hACE2 transgenic mice.

30 Mar 2022

Study evaluates COVID-19 vaccination with recombinant accessory protein-deficient SARS-CoV-2

Researchers assessed the impact of recombinant accessory protein-deficient severe acute respiratory syndrome coronavirus 2 immunization against SARS-CoV-2 transmission and disease severity.

18 Mar 2022

SARS-CoV-2 infection model generated from human tonsil epithelial organoids

Researchers evaluate the feasibility of tonsil epithelial cell-derived organoids as an ex vivo model for studying SARS-CoV-2 infection.

15 Mar 2022

Analyzing transcriptomic landscape of SARS-CoV-2-infected lung cells

In a new study, researchers used deep transcriptome analysis to examine the coding and non-coding transcriptional landscape of lung cells infected with SARS-CoV-2.

1 Mar 2022

Study proposes SARS-CoV-2-encoded peptide presented by HLA-E may suppress inhibition of natural killer cells

A recent study reported the abrogation of inhibition of the NK cells by a SARS-CoV-2-encoded protein presented by HLA-E.

23 Feb 2022

Targeting SARS-CoV-2 M protein may help ease severity of COVID-19

A new study, published on the medRxiv preprint server, focused on the production of human CD4+ T cell lines (TCLs), reactive to either S or M protein, and analyzed if the S and M structural proteins had intrinsic differences in driving antigen-specific CD4+ T cell responses.

27 Jan 2022

Attenuated tissue immune responses against SARS-CoV-2 in obese and non-obese patients

In a new study, researchers evaluated the single-cell transcriptomes from bronchiolar lavage in three adult cohorts comprising of obese and non-obese SARS-CoV-2 patients.

24 Jan 2022

Omicron infection induces cross-reactive immune responses

New research revealed that vaccine-breakthrough infections might elicit cross-reactive bNAbs against all variants of concern.

31 Dec 2021

Discovery of diverse sarbecovirus broadly neutralizing antibodies from SARS-CoV-2 “infected-vaccinated” humans

Scientists were inspired by the robust serum nAb responses in people who recovered from natural SARS-CoV-2 infection and were later vaccinated using mRNA vaccine. They isolated and characterized bnAbs from two COVID-19 convalescent donors who were recently vaccinated. These isolated bnAbs were found to be highly potent against sarbecoviruses. This research is available on the bioRxiv* preprint server.

13 Sep 2021

Antihistamines might be effective in long-COVID

A team of scientists from the United Kingdom has recently revealed the therapeutic benefits of histamine receptor antagonists in reducing long-term symptoms of coronavirus disease 2019 (COVID-19). They have also indicated that T cell immune responses to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection vary between asymptomatic COVID-19 and long-COVID.

8 Jun 2021

B.1.617.2 variant of SARS-CoV-2 is partially resistant to antibody-mediated neutralization

A team of scientists from France has recently conducted a study to evaluate the sensitivity of the B.1.617 variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) to antibody-mediated neutralization.

31 May 2021

Highly conserved neutralizing epitope identified on SARS-CoV-2 spike protein

A recent study conducted at the University of Texas at Austin, USA, has identified a highly conserved neutralizing antibody binding site on the spike S2 domain of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The study findings might help develop novel spike-targeting antibodies for widespread protection. The study is currently available on the bioRxiv preprint server.

2 Feb 2021

Study clarifies the effect of aging on hematopoietic stem cells

By transferring mouse aged hematopoietic stem cells (aged HSCs) to the environment of young mice (bone marrow niche), it was demonstrated that the pattern of stem cell gene expression was rejuvenated to that of young hematopoietic stem cells.

24 Dec 2020

Most SARS-CoV-2-infected individuals develop durable B cell-mediated immunity

Researchers from the Johns Hopkins University and The Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA, investigated the durability of B cell immunity following SARS-CoV-2 infection and recovery in their recent work published on the preprint server medRxiv.

3 Nov 2020