Virologia
Scientists film influenza viruses ‘surfing’ into human cells in real time
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An international team led by ETH Zurich and including researchers in Japan has used a new high‑resolution imaging technique to watch, live, as influenza viruses penetrate human cells. The work shows that cells actively engage with the virus, helping to draw it inside in a process that resembles surfing along the cell membrane, and could inform the development of targeted antiviral therapies.
TBE-tapausten määrä Ruotsissa on kolminkertaistunut kymmenessä vuodessa rokotusten yleistymisestä huolimatta. Uppsalan yliopiston virologian professori Åke Lundkvist epäilee viruksen muuttuneen, mikä saattaa heikentää rokotteen tehoa. Tutkijat analysoivat parhaillaan 12 000 puutiaista selvittääkseen tilannetta.
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Researchers at Caltech have discovered how viruses infect bacteria by disabling a key protein called MurJ, essential for cell wall construction. This mechanism, revealed through high-resolution imaging, suggests a new approach to combating antibiotic-resistant superbugs. The findings highlight convergent evolution in unrelated viruses blocking MurJ similarly.
Scientists at the University of Queensland have captured the first near‑atomic, high‑resolution 3D images of the yellow fever virus, detailing how the surface of the long‑used vaccine strain differs from virulent, disease‑causing strains. The work sheds light on how the virus is recognised by the immune system and could support improved vaccines for yellow fever and related mosquito‑borne diseases.
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Researchers at the University of British Columbia have discovered that viral infections in honey bee queens reduce their pheromone production, triggering workers to replace them through a process called supersedure. This finding explains many queen failures faced by beekeepers and suggests synthetic pheromones as a solution to stabilize hives. The study highlights the role of viruses, often spread by varroa mites, in disrupting colony health.