The transcription factor PU.1 has a pivotal role in both the generation and
function of macrophages. To determine whether PU.1 is also involved in mic
roglial regulation, we investigated its expression following hypoxic-ischem
ia (HI) brain injury and in the BV-2 microglial cell line. We found that mi
croglia constitutively expressed high levels of PU.1 protein in both their
'resting' and 'activated' states. (C) 2000 Elsevier Science B.V. All rights
reserved.