
AbstractOlfactory ensheathing cells (OECs) are candidates for therapeutic approaches for neural regeneration due to their ability to assist axon regrowth in central nervous system lesion models. However, little is understood about the processes and mechanisms underlying migration of these cells. We report here that novel lamellipodial protrusions, termed lamellipodial waves, are integral to OEC migration. Time‐lapse imaging of migrating OECs revealed that these highly dynamic waves progress along the shaft of the cells and are crucial for mediating cell–cell adhesion. Without these waves, cell–cell adhesion does not occur and migrational rates decline. The activity of waves is modulated by both glial cell line‐derived neurotrophic factor and inhibitors of the JNK and SRC kinases. Furthermore, the activity of lamellipodial waves can be modulated by Mek1, independently of leading edge activity. The ability to selectively regulate cell migration via lamellipodial waves has implications for manipulating the migratory behavior of OECs during neural repair. © 2007 Wiley‐Liss, Inc.
GDNF;Mek1, 571, MAP Kinase Kinase 4, MAP Kinase Kinase 1, 610, 320704 Cellular Nervous System, Mice, Transgenic, Cell Communication, repulsion, Mice, C1, Cell Movement, Cell Adhesion, Animals, Glial Cell Line-Derived Neurotrophic Factor, Pseudopodia, Enzyme Inhibitors, olfactory ensheathing cell, Cell Membrane, Neurosciences, 500, Olfactory Pathways, 730104 Nervous system and disorders, src-Family Kinases, lamellipodia, Neurosciences & Neurology, Neuroglia
GDNF;Mek1, 571, MAP Kinase Kinase 4, MAP Kinase Kinase 1, 610, 320704 Cellular Nervous System, Mice, Transgenic, Cell Communication, repulsion, Mice, C1, Cell Movement, Cell Adhesion, Animals, Glial Cell Line-Derived Neurotrophic Factor, Pseudopodia, Enzyme Inhibitors, olfactory ensheathing cell, Cell Membrane, Neurosciences, 500, Olfactory Pathways, 730104 Nervous system and disorders, src-Family Kinases, lamellipodia, Neurosciences & Neurology, Neuroglia
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