Ribonucleic Acid News and Research

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Researchers detect Zika virus RNA in free-ranging African bats

A team of Colorado State University scientists, led by veterinary postdoctoral fellow Dr. Anna Fagre, has detected Zika virus RNA in free-ranging African bats. RNA, or ribonucleic acid, is a molecule that plays a central role in the function of genes.

3 Jun 2021

Nanopore sequencing contradicts human genome integration of SARS-CoV-2

Now a new preprint research paper posted to the bioRxiv* server dismisses the possibility, raised by that study, that the virus inserts its genetic material into the host cell’s genome.

2 Jun 2021

E484K mutation may confer immune evasion capability on UK variant of SARS-CoV-2

A new medRxiv* preprint reports the immunomodulatory effect of the E484K mutation newly acquired by the United Kingdom (U.K.) variant.

2 Jun 2021

Scientists explain possible causes of anaphylaxis following mRNA COVID-19 vaccination

New research from a team of scientists at the Centre for Research in Molecular Modeling, Department of Chemistry and Biochemistry, Concordia University in Canada, has aimed to determine the potential causes of anaphylaxis or allergic reactions reported in some individuals after receiving COVID-19 vaccines, including the mRNA vaccines by Pfizer-BioNTech and Moderna.

1 Jun 2021

Could a mathematical application of information theory identify and predict SARS-CoV-2 mutations?

An interesting new study by researchers at the University of Portsmouth, UK, describes the use of a mathematical method to sequence genomes based on information theory. The method offers an alternative to clinical techniques, allowing mutations to be detected and possibly even predicted. In this way, it opens new research opportunities in bioinformatics and genetics.

31 May 2021

SARS-CoV-2 NSP14 induces potent inflammation via NF-κB pathways, finds study

SARS-CoV-2 has a single-stranded RNA genome encoding both structural and non-structural proteins. Of these, the latter is known to play a variety of roles in viral replication and the assembly of new viral particles, as well as in suppressing cellular immune responses. A new study reports the activity of one such protein, the non-structural protein 14 (NSP14), which activates the inflammatory mediator NF-κB to trigger intense inflammation.

31 May 2021

New LNP-based mRNA vaccine candidate protects against lethal SARS-CoV-2 in preclinical trials

A new study, published in Nano Letters, describes an effective new COVID-19 vaccine candidate based on a messenger ribonucleic acid (mRNA) platform.

28 May 2021

Pfizer-BioNTech COVID-19 vaccine may not be associated with adverse effects on fertility and breastfeeding, says study

A recent study by researchers in Singapore shows the absence of evidence for adverse effects on fertility or the presence of the vaccine mRNA (messenger ribonucleic acid) in breast milk, following the administration of the Pfizer BNT162B2 COVID-19 vaccine. This supports efforts to prevent the spread of false information about the effects of the vaccine.

27 May 2021

Could the marine compound plitidepsin promote recovery from moderate COVID-19?

A new paper by an international team of researchers describes experimental evidence of the antiviral efficacy of a marine compound called plitidepsin against SARS-CoV-2. The findings show that plitidepsin inhibits SARS-CoV at low concentrations, as observed by a thousand-fold reduction in genomic RNA and viral titers in cells exposed to the virus in culture when treated.

27 May 2021

SARS-CoV-2 UK variant may induce more inflammation, study suggests

Since COVID-19 was first detected in December 2019 in Wuhan, China, many different variants of its causative virus – SARS-CoV-2 – have emerged. Through increased viral fitness, some of these have risen to predominance over earlier variants in a remarkably short period of time. New research, by a team of scientists at major institutions in France, examines the reasons behind this phenomenon in one such variant of concern (VOC), the so-called UK variant.

25 May 2021

Research looks at viral presence around hospitalized COVID-19 patients

Researchers in Canada aimed to determine the burden of SARS-CoV-2 in the air and on surfaces in the rooms of patients hospitalized with COVID-19.

25 May 2021

Discovery of novel SARS-related coronaviruses in bats

In a recent study published on the bioRxiv* server, Peng Zhou, Zheng-Li Shi and colleagues at the Wuhan Institute of Virology, with collaboration from scientists at the University of Chinese Academy of Sciences in China, have identified a new lineage of SARS-related coronaviruses that utilize bat angiotensin-converting enzyme 2 (ACE2) receptors for cell entry, which is the same receptor used by SARS-CoV-2 to infect host cells.

25 May 2021

Do mixed COVID-19 vaccines provide immunity?

The initial results of the CombivacS trial found that the antibody levels in individuals increased by 150 times when the Pfizer messenger ribonucleic acid (mRNA) vaccine was given after a first dose of the AstraZeneca severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccine, with only mild common side effects.

24 May 2021

Why COVID-19 patients have more pathogenic bacteria in their noses

Researchers compared the nasal microbiome of coronavirus disease 2019 (COVID-19) patients, healthy individuals, and healthcare workers. These studies indicated an increase in the pathogen Pseudomonas aeruginosa present in the nasal microbiome of COVID-19 patients, which may be responsible for other secondary infections.

24 May 2021

Little evidence for mRNA COVID-19 vaccine-associated thrombocytopenia, suggests new FDA study

Even as a host of vaccines have been rolled out to counter the coronavirus disease 2019 (COVID-19) pandemic, some serious adverse effects have been reported, in the form of thrombocytopenia. A new study in the journal Vaccine reports the results of an evaluation of reported cases of this condition, using data from the Vaccine Adverse Event Reporting System (VAERS).

24 May 2021

Novel natural compounds may help treat COVID-19, study suggests

A new study in the journal Chemistry Europe reports two natural compounds identified by virtual screening and computational modeling as having great promise for the development of drugs against SARS-CoV-2.

24 May 2021

Pfizer-BioNTech vaccination not associated with platelet activation in new study

Among the devastating complications of severe or critical coronavirus disease 2019 (COVID-19), clot formation ranks high in the adverse impact it creates. An important question is whether SARS-CoV-2-spike-based vaccines also cause such coagulopathies. A new study, released as a preprint on the medRxiv* server, examines this risk for the first time.

21 May 2021

Facets of SARS-CoV-2 infection and animal models

A new study in the journal Frontiers in Cell and Developmental Biology discusses the ribonucleic acid (RNA) genome of the virus, and the mechanisms by which it establishes infection within the host cell. The researchers also summarize the development of animal models of COVID-19, which will both help understand the clinical features of the illness, and indicate new approaches for the treatment of the infection.

21 May 2021

Intranasal COVID-19 therapeutic shows promise in preclinical trials

Researchers from the US and Denmark recently described a novel therapeutic option that targets the SARS-CoV-2 ribonucleic acid (RNA) using locked nucleic acid antisense oligonucleotides (LNA ASOs). They identified an LNA ASO that binds to the 5’ leader sequence of SARS-CoV-2 ORF1a/b. This disrupts a highly conserved stem-loop structure with nanomolar efficacy and inhibits viral replication in host cells.

20 May 2021

Tokyo sees rapid rise of SARS-CoV-2 R.1 lineage

A new research paper posted to the preprint server medRxiv* reports the rise of a new lineage in Tokyo, Japan, bearing a combination of two biologically important mutations.

20 May 2021