Hao YinLook at this gorgeous movie on Neutrophil (Green) talking with #EndothelialCell (Blue), #Pericyte (Magenta) & #MastCell (Cyan) in Venule during #Diapedesis 2 h post-TNFα challenge 🤩
Perivascular #MastCell IL-17A->
⏫MC-proximal venular #Pericyte/Mural cell (not #EndothelialCell) Surface presentation of ICAM1 & CXCL1->
⏫#Neutrophil #Diapedesis in subendothelial space
Dr. Mathieu-Benoit Voisin lab @NatureComms 2022 @RegisJoulia
https://www.nature.com/articles/s41467-022-34695-7
Neutrophil breaching of the blood vessel pericyte layer during diapedesis requires mast cell-derived IL-17A - Nature Communications
The blood vessel wall is a complex multi-layered structure, yet upon injury or infection, neutrophil leukocytes are rapidly migrating from the blood stream to the affected tissues, by a process termed diapedesis. Authors here show that the final steps of diapedesis through the outer pericyte layer is regulated by perivascular mast cells via IL-17A production.