Motile membrane protrusions regulate cell-cell adhesion and migration of olfactory ensheathing glia.

Abstract:

:Olfactory 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.

journal_name

Glia

journal_title

Glia

authors

Windus LC,Claxton C,Allen CL,Key B,St John JA

doi

10.1002/glia.20586

subject

Has Abstract

pub_date

2007-12-01 00:00:00

pages

1708-19

issue

16

eissn

0894-1491

issn

1098-1136

journal_volume

55

pub_type

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