RRC ID 45845
Author Salzberg Y, Ramirez-Suarez NJ, Bülow HE.
Title The proprotein convertase KPC-1/furin controls branching and self-avoidance of sensory dendrites in Caenorhabditis elegans.
Journal PLoS Genet
Abstract Animals sample their environment through sensory neurons with often elaborately branched endings named dendritic arbors. In a genetic screen for genes involved in the development of the highly arborized somatosensory PVD neuron in C. elegans, we have identified mutations in kpc-1, which encodes the homolog of the proprotein convertase furin. We show that kpc-1/furin is necessary to promote the formation of higher order dendritic branches in PVD and to ensure self-avoidance of sister branches, but is likely not required during maintenance of dendritic arbors. A reporter for kpc-1/furin is expressed in neurons (including PVD) and kpc-1/furin can function cell-autonomously in PVD neurons to control patterning of dendritic arbors. Moreover, we show that kpc-1/furin also regulates the development of other neurons in all major neuronal classes in C. elegans, including aspects of branching and extension of neurites as well as cell positioning. Our data suggest that these developmental functions require proteolytic activity of KPC-1/furin. Recently, the skin-derived MNR-1/menorin and the neural cell adhesion molecule SAX-7/L1CAM have been shown to act as a tripartite complex with the leucine rich transmembrane receptor DMA-1 on PVD mechanosensory to orchestrate the patterning of dendritic branches. Genetic analyses show that kpc-1/furin functions in a pathway with MNR-1/menorin, SAX-7/L1CAM and DMA-1 to control dendritic branch formation and extension of PVD neurons. We propose that KPC-1/furin acts in concert with the 'menorin' pathway to control branching and growth of somatosensory dendrites in PVD.
Volume 10(9)
Pages e1004657
Published 2014-9-1
DOI 10.1371/journal.pgen.1004657
PMID 25232734
PMC PMC4169376
MeSH Amino Acid Sequence Animals Caenorhabditis elegans / physiology* Caenorhabditis elegans Proteins / chemistry Caenorhabditis elegans Proteins / genetics* Caenorhabditis elegans Proteins / metabolism Dendrites / metabolism* Furin / chemistry Furin / genetics* Furin / metabolism Molecular Sequence Data Mutation Phenotype Sensory Receptor Cells / metabolism* Sequence Alignment
IF 5.175
Times Cited 18
C.elegans tm5159