In this study, the authors show that layer V projection neurons require the presence of subcortical CX3CR1-positive microglia for survival. IGF1 secretion from these microglia appears to be necessary for this trophic effect. Inhibition of the microglial cell activation abrogates IGF1 secretion and compromises neuronal survival.
- Masaki Ueno
- Yuki Fujita
- Toshihide Yamashita