CSF1R + macrophage and osteoclast depletion impairs neural crest proliferation and craniofacial morphogenesis (opens in new tab)

ABSTRACTDespite a wealth of knowledge about the mechanisms underlying craniofacial morphogenesis during gestation, the roles of fetal macrophages and osteoclasts during this process remain less well characterized. Here, we used the pharmacological inhibitor PLX5622 to disrupt colony stimulating factor 1 receptor (CSF1R) signaling, which is essential for macrophage and osteoclast proliferation, differentiation and survival. Prenatal PLX5622 exposure in mouse resulted in ∼50% depletion of CSF1R...