Influenza virus is a respiratory pathogen that can cause severe disease in humans. The virus enters the body through the nose or mouth and travels to the lungs, where it infects cells in the airways. The virus then hijacks the cell's machinery to replicate and produce new viruses.

New research has revealed how influenza virus hijacks human cells. The study, published in the journal Nature Microbiology, found that the virus uses a protein called hemagglutinin (HA) to bind to a receptor on the surface of human cells. This binding event triggers a signaling cascade that leads to the activation of a protein called nuclear factor kappa-B (NF-κB).

NF-κB is a transcription factor that regulates the expression of genes involved in inflammation and immune response. The activation of NF-κB by influenza virus leads to the production of inflammatory cytokines and chemokines, which attract immune cells to the site of infection. The immune cells then help to clear the virus from the body.

The study's findings provide new insights into the molecular mechanisms of influenza virus infection. This knowledge could lead to the development of new drugs to treat influenza and prevent its spread.

Key Findings:

* Influenza virus uses HA to bind to a receptor on the surface of human cells.

* This binding event triggers a signaling cascade that leads to the activation of NF-κB.

* NF-κB is a transcription factor that regulates the expression of genes involved in inflammation and immune response.

* The activation of NF-κB by influenza virus leads to the production of inflammatory cytokines and chemokines, which attract immune cells to the site of infection.

* The immune cells then help to clear the virus from the body.