TY - JOUR
T1 - Pak1 and its T212 phosphorylated form accumulate in neurones and epithelial cells of the developing rodent
AU - Zhong, J.L.
AU - Banerjee, M.D.
AU - Nikolic, M.
N1 - MEDLINE® is the source for the MeSH terms of this document.
PY - 2003/9/1
Y1 - 2003/9/1
N2 - The serine/threonine kinase Pak1 is a target of the RhoGTPases Rac and Cdc42 and an important regulator of cell morphology and migration. Recent work from several laboratories has indicated that Pak1 controls microtubule dynamics as well as the organisation of F-actin microfilaments. Pak1 is phosphorylated on T212 by the p35/Cdk5 or cyclin B1/Cdc2 kinase in postmitotic neurones and mitotic cells, respectively. To understand its function during development, we have carried out a detailed temporal and spatial analysis of Pak1 expression and phosphorylation on T212. In the embryonic forebrain, Pak1 and Pak1T212(PO) were seen to accumulate in the corpus callosum, intermediate zone, lateral olfactory tracts, and anterior commissures. Epithelial cells of the mouse embryo lung, kidney, intestine, and skin also exhibited high levels of Pak1 and Pak1T212(PO), suggesting a previously unsuspected role in epithelial differentiation. Pak1T212(PPO ) was undetectable in all adult tissues. Together, these data indicate a specific, developmentally regulated role of the Pak1 kinase.
AB - The serine/threonine kinase Pak1 is a target of the RhoGTPases Rac and Cdc42 and an important regulator of cell morphology and migration. Recent work from several laboratories has indicated that Pak1 controls microtubule dynamics as well as the organisation of F-actin microfilaments. Pak1 is phosphorylated on T212 by the p35/Cdk5 or cyclin B1/Cdc2 kinase in postmitotic neurones and mitotic cells, respectively. To understand its function during development, we have carried out a detailed temporal and spatial analysis of Pak1 expression and phosphorylation on T212. In the embryonic forebrain, Pak1 and Pak1T212(PO) were seen to accumulate in the corpus callosum, intermediate zone, lateral olfactory tracts, and anterior commissures. Epithelial cells of the mouse embryo lung, kidney, intestine, and skin also exhibited high levels of Pak1 and Pak1T212(PO), suggesting a previously unsuspected role in epithelial differentiation. Pak1T212(PPO ) was undetectable in all adult tissues. Together, these data indicate a specific, developmentally regulated role of the Pak1 kinase.
UR - http://www.scopus.com/inward/record.url?scp=0041857893&partnerID=8YFLogxK
U2 - 10.1002/dvdy.10351
DO - 10.1002/dvdy.10351
M3 - Article
AN - SCOPUS:0041857893
SN - 1058-8388
VL - 228
SP - 121
EP - 127
JO - Developmental Dynamics
JF - Developmental Dynamics
IS - 1
ER -