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Skin-derived cues control arborization of sensory dendrites in Caenorhabditis elegans.


ABSTRACT: Sensory dendrites depend on cues from their environment to pattern their growth and direct them toward their correct target tissues. Yet, little is known about dendrite-substrate interactions during dendrite morphogenesis. Here, we describe MNR-1/menorin, which is part of the conserved Fam151 family of proteins and is expressed in the skin to control the elaboration of "menorah"-like dendrites of mechanosensory neurons in Caenorhabditis elegans. We provide biochemical and genetic evidence that MNR-1 acts as a contact-dependent or short-range cue in concert with the neural cell adhesion molecule SAX-7/L1CAM in the skin and through the neuronal leucine-rich repeat transmembrane receptor DMA-1 on sensory dendrites. Our data describe an unknown pathway that provides spatial information from the skin substrate to pattern sensory dendrite development nonautonomously.

SUBMITTER: Salzberg Y 

PROVIDER: S-EPMC3881433 | biostudies-literature | 2013 Oct

REPOSITORIES: biostudies-literature

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Skin-derived cues control arborization of sensory dendrites in Caenorhabditis elegans.

Salzberg Yehuda Y   Díaz-Balzac Carlos A CA   Ramirez-Suarez Nelson J NJ   Attreed Matthew M   Tecle Eillen E   Desbois Muriel M   Kaprielian Zaven Z   Bülow Hannes E HE  

Cell 20131001 2


Sensory dendrites depend on cues from their environment to pattern their growth and direct them toward their correct target tissues. Yet, little is known about dendrite-substrate interactions during dendrite morphogenesis. Here, we describe MNR-1/menorin, which is part of the conserved Fam151 family of proteins and is expressed in the skin to control the elaboration of "menorah"-like dendrites of mechanosensory neurons in Caenorhabditis elegans. We provide biochemical and genetic evidence that M  ...[more]

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