Flu Virus Entry Mechanism Discovered

Scientists led by Emily Bruce>>> at the University of Vermont's Larner College of Medicine made an accidental breakthrough in understanding how influenza viruses infect cells. They discovered that different flu strains, specifically Influenza A virus subtype H1N1>>> and Influenza A virus subtype H3N2, use distinct strategies to enter human lung cells. Crucially, they found that Influenza A virus subtype H3N2 viruses depend on a specific human protein called Rab11B>>> for entry, while Influenza A virus subtype H1N1>>> viruses do not. Depleting Rab11B>>> prevented Influenza A virus subtype H3N2 from entering cells. This finding challenges previous assumptions that all flu viruses enter cells in the same way and opens new avenues for developing targeted antiviral medications to prevent influenza infections. The study was published in the Journal of Virology>>>.