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Influenza-Infected Lung Cells Send An SOS To The Immune System

Influenza can cause viral pneumonia in humans, leading to . The virus damages the alveolar , which release molecular attractants to bring to the site of infection. Until recently, the identity of these immune attractants was unknown.

In this issue of the Journal of Clinical Investigation, researchers led by Suzanne Herold at the report that produce granulocyte-colony stimulating factor (GM-CSF) to drive the accumulation of immune cells in a mouse model of influenza-associated pneumonia.

GM-CSF protected mice against influenza infection, while loss of GM-SCF compromised their immune response and resulted in a more severe . These results suggest that GM-CSF is crucial for protection and recovery from influenza-mediated lung injury and has implications for treatment of influenza-associated pneumonia.

“Alveolar epithelial cells orchestrate DC function in murine viral pneumonia”
Susanne Herold
UGLC, Giessen, UNK, DEU

Source

Journal of Clinical Investigation Sept. 10, 2012