Challenging long-held assumptions, Aarhus University researchers have demonstrated that the protein building blocks essential for life as we know it can form readily in space. This discovery, appearing in Nature Astronomy, significantly raises the statistical probability of finding extraterrestrial life.
Light is a universal stimulus that influences all living things. Cycles of light and dark help set the biological clocks for organisms ranging from single-celled bacteria to human beings. Some bacteria use photosynthesis to convert sunlight into energy just like plants, but other bacteria sense light for less well-known functions.
Monophosphorylation is a key rate-limiting step for the efficacy of broad-spectrum nucleoside antiviral drugs, and designing phosphate prodrugs is an …...
Background/Objectives: Beak and feather disease virus (BFDV) is the causative agent of psittacine beak and feather disease (PBFD), affecting psittacine birds. There is currently no commercial vaccine or treatment for this disease. This study developed a novel BFDV coat protein mRNA vaccine encapsidated by TMV coat protein to form pseudovirions (PsVs) and tested its immunogenicity alongside BFDV coat protein (CP) subunit and DNA vaccine candidates. Methods: mRNA and BFDV CP subunit vaccine candidates were produced in Nicotiana benthamiana and subsequently purified using PEG precipitation and gradient ultracentrifugation, respectively. The DNA vaccine candidate was produced in E. coli cells harbouring a plasmid with a BFDV1.1mer pseudogenome. Immunogenicity of the vaccine candidates was evaluated in African grey parrot chicks. Results: Successful purification of TMV PsVs harbouring the mRNA vaccine, and of the BFDV-CP subunit vaccine, was confirmed by SDS-PAGE and western blot analysis. TEM analyses confirmed formation of TMV PsVs, while RT-PCR and RT-qPCR cDNA amplification confirmed encapsidation of the mRNA vaccine candidate within TMV particles. Restriction digests verified presence of the BFDV1.1mer genome in the plasmid. Four groups of 5 ten-week-old African grey parrot (Psittacus erithacus) chicks were vaccinated and received two boost vaccinations 2 weeks apart. Blood samples were collected from all four groups on day 14, 28 and 42, and sera were analysed using indirect ELISA, which showed that all vaccine candidates successfully elicited specific anti-BFDV-CP immune responses. The subunit vaccine candidate showed the strongest immune response, indicated by higher binding titres (>6400), followed by the mRNA and DNA vaccine candidates. Conclusions: The candidate vaccines present an important milestone in the search for a protective vaccine against PBFD, and their inexpensive manufacture could considerably aid commercial vaccine development.
Experts warn the H5 bird flu strain could spark a pandemic more severe than Covid-19 as global surveillance intensifies amid rising concerns. Find out what happened.
Despite the ubiquity of cats in modern homes, we still don't know many details about the timing and routes of early cat domestication and dispersal into Europe and beyond, aside from the common association of cats with ancient Egyptian culture.
You may not realize you’ve benefited from HIV research. But if you’ve received a treatment that was approved through a recent clinical trial, received a CAR T cell for your cancer, or even just taken Paxlovid, you have.
A cell can act in astonishingly complex ways. It must decide for itself whether to grow and multiply, rest, specialize, age or die. This applies just as much to mammalian cells as it does to seemingly simple microbes.
The COVID-19 pandemic has profoundly altered various aspects of healthcare delivery and disease epidemiology, with childhood asthma and wheezing disorders presenting a uniquely compelling case study within this transformative dynamic.
Our group has previously reported on (E)-4-(1-(2-(5-(4-chlorophenyl)thiazol-2-yl)hydrazono)ethyl)phenol (3a) as an antiviral agent against DENV with a…...
Viral diseases cause significant economic losses within the equine population. Horses are susceptible to equine coronavirus (ECoV) and severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), although only ECoV has been associated to clinical disease.
Broad-spectrum antiviral agent (BSAA) drugs are essential in the fight against viral, especially emerging, diseases.However, their development faces …...
"A plague is upon us'' may have been a common phrase in ancient Jordan, where countless people perished from a mysterious malady that would shape both a society and an era of civilization.
This study examined mitochondrial and nuclear-encoded mitochondrial DNA methylation in Indian patients with severe COVID-19 and found region-specific differential methylation linked to disease severity.
In a multi-institutional study published today in Nature Nanotechnology, researchers from The University of Texas MD Anderson Cancer Center reported that engineered bispecific nanobodies successfully strengthened mucosal defenses in the respiratory tract, improving protection against influenza...
The only wild specimens of a rare blue parrot, which were recently returned to their natural habitat, have been diagnosed with an incurable, likely lethal virus, Brazil's government told AFP Thursday.
The importance of peripheral immunity in Alzheimer disease has gained much traction in recent years, mainly due to multiple genome-wide association studies identifying risk loci associated with genes expressed predominantly in the periphery.
Inside cells, RNAs and proteins form tiny, liquid-like droplets called biomolecular condensates. These droplets are essential for organizing cellular life, yet why some RNAs cluster more readily than others has remained unclear. Disruptions in condensate formation are linked to developmental defects, cancer, and neurodegenerative diseases.
The provided material outlines a molecular investigation into the five-amino-acid RLFRK sequence found within the SARS-CoV-2 Spike protein, which is present in both the virus and certain mRNA vaccines. The core hypothesis posits that this segment, located in the Receptor Binding Motif, could initiate T-cell mediated autoimmunity through molecular mimicry. Immunological evidence confirms that the RLFKRK sequence is both structurally exposed and efficiently processed and presented to T-cells following vaccination. Crucially, this viral peptide shares significant homology with essential human proteins, including Teneurin-4 (TENM4) and POMGNT1, which are important for proper neurological function. The investigation links this mechanism to individual genetic susceptibility by showing a computational prediction for strong binding to the HLA-DRB1*08:01 allele, an allele associated with autoimmune diseases like MS and SLE. Collectively, these findings establish a plausible mechanistic model for potential cross-reactive T-cell pathology in genetically predisposed individuals.
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A research team at CiQUS (University of Santiago de Compostela, Spain) has unveiled an innovative molecular approach that enables anticancer drugs to reach the nucleus of tumor cells, where they can exert their therapeutic effect. The study focused on doxorubicin, a widely used chemotherapy agent. Prolonged exposure to this drug often leads to the emergence of resistant cells, a major clinical challenge that this strategy successfully overcomes while preserving the drug's antitumor activity.
In the ever-evolving realm of therapeutic development, humanization of monoclonal antibodies and nanobodies is an essential step that significantly enhances their clinical applicability.The process aims to modify these proteins derived from non-human species to resemble their human counterparts more...
This video explores how COVID-19 infection alters the oral and gut microbiota and how these microbial changes correlate with SARS-CoV-2 viral load during hospitalization. The study provides deep insight into the microbial dysbiosis observed in infected patients and its potential impact on disease severity, immune response, and recovery. By linking oral–gut microbial networks with viral persistence, this research opens new perspectives for microbiome-based diagnostics and therapeutic interventions in infectious diseases.
Klein and colleagues characterize 04_A06, a new VH1-2-encoded broadly neutralizing antibody that has marked breadth and potency against extended multiclade HIV-1 pseudovirus panels and can maintain full viral suppression in HIV-1-infected humanized mice.
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