Functional Coordination of WAVE and WASP in C. elegans Neuroblast Migration.
Dev Cell
; 39(2): 224-238, 2016 10 24.
Article
in En
| MEDLINE
| ID: mdl-27780040
ABSTRACT
Directional cell migration is critical for metazoan development. We define two molecular pathways that activate the Arp2/3 complex during neuroblast migration in Caenorhabditis elegans. The transmembrane protein MIG-13/Lrp12 is linked to the Arp2/3 nucleation-promoting factors WAVE or WASP through direct interactions with ABL-1 or SEM-5/Grb2, respectively. WAVE mutations partially impaired F-actin organization and decelerated cell migration, and WASP mutations did not inhibit cell migration but enhanced migration defects in WAVE-deficient cells. Purified SEM-5 and MIG-2 synergistically stimulated the F-actin branching activity of WASP-Arp2/3 in vitro. In GFP knockin animals, WAVE and WASP were largely organized into separate clusters at the leading edge, and the amount of WASP was less than WAVE but could be elevated by WAVE mutations. Our results indicate that the MIG-13-WAVE pathway provides the major force for directional cell motility, whereas MIG-13-WASP partially compensates for its loss, underscoring their coordinated activities in facilitating robust cell migration.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Cell Movement
/
Proto-Oncogene Proteins c-abl
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Caenorhabditis elegans
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Caenorhabditis elegans Proteins
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Neurons
Type of study:
Prognostic_studies
Limits:
Animals
Language:
En
Journal:
Dev Cell
Journal subject:
EMBRIOLOGIA
Year:
2016
Document type:
Article
Affiliation country: