Interactions between platelets, leukocytes, and activated endothelial cells are important during microvascular occlusion; however, the regulatory mechanisms of these heterotypic cell-cell interactions remain unclear. Here, using intravital microscopy to evaluate mice lacking specific isoforms of the serine/threonine kinase AKT and bone marrow chimeras, we found that hematopoietic cell–associated AKT2 is important for neutrophil adhesion and crawling and neutrophil-platelet interactions on activated endothelial cells during TNF-α–induced venular inflammation. Studies with an AKT2-specific inhibitor and cells isolated from WT and
Jing Li, Kyungho Kim, Eunsil Hahm, Robert Molokie, Nissim Hay, Victor R. Gordeuk, Xiaoping Du, Jaehyung Cho
Neutrophil and platelet AKT2 regulate heterotypic neutrophil-platelet aggregation under shear conditions.