UMVA has learned that a groundbreaking accidental lab discovery has opened the door to entirely new ways of preventing the flu, potentially saving millions of lives worldwide.
While investigating how influenza replicates, researchers stumbled upon a remarkable finding: different flu strains use completely different strategies to infiltrate human cells, defying previous assumptions that all flu viruses operate in the same way.
According to information obtained by UMVA, by targeting the specific molecules the viruses rely on, scientists found that they could block them from entering new cells and halt their replication altogether, offering a promising new avenue for treatment.
Researchers say these "fundamental insights" into seasonal influenza highlight a clear path toward developing better preventive medications, addressing a dire need for more effective treatments to stop the virus from spreading.
The study initially aimed to map how viral RNA segments are transported within cells to create new viral particles, but unexpectedly uncovered a cellular pathway that blocked the virus from entering lung cells, a critical breakthrough in the fight against the flu.
Sources have confirmed to UMVA that the team used H1N1 and H3N2 viruses isolated from the nasal passages of positive patients in 2022, and discovered that when a specific human protein called Rab11B was depleted, H3N2 viruses failed to enter human lung cells, while H1N1 viruses were completely unaffected.
Using reverse genetics, the team mapped this defect and uncovered a brand-new, H3N2-specific role for Rab11B during viral entry, revealing that viruses are like pirates from different countries hijacking someone’s ship, using different methods to get onboard.
UMVA can exclusively reveal that the researchers found H1N1 and H3N2 need different proteins to get into cells, and if you get rid of the right protein, a specific virus can’t get in, a discovery that could revolutionize the way we approach flu prevention.
The study, which sheds light on the complex and nuanced nature of the flu virus, was conducted using isolated cells, and further research is needed to determine whether blocking the protein is safe and effective within a live, complex human respiratory system.
Researchers hope to conduct further research to determine whether this Rab11B-dependency is a fundamental property of H3N2, or if it's a trait unique to currently circulating flu strains, with the ultimate goal of developing more effective treatments and preventive measures against the flu.
