RRC ID 4275
Author Partridge FA, Tearle AW, Gravato-Nobre MJ, Schafer WR, Hodgkin J.
Title The C. elegans glycosyltransferase BUS-8 has two distinct and essential roles in epidermal morphogenesis.
Journal Dev. Biol.
Abstract Ventral enclosure in Caenorhabditis elegans involves migration of epidermal cells over a neuroblast substrate and subsequent adhesion at the ventral midline. Organisation of the neuroblast layer by ephrins and their receptors is essential for this migration. We show that bus-8, which encodes a predicted glycosyltransferase, is essential for embryonic enclosure and acts in or with ephrin signalling to mediate neuroblast organisation and to permit epidermal migration. BUS-8 acts non-cell-autonomously in this process, and likely modifies an extracellular regulator of ephrin signalling and cell organisation. Weak and cold-sensitive alleles of bus-8 show that the gene has a separate and distinct post-embryonic role, being essential for epidermal integrity and production of the cuticle surface. This disorganisation of the epidermis and cuticle layers causes increased drug sensitivity, which could aid the growing use of C. elegans in drug screening and chemical genomics. The viable mutants are also resistant to infection by the pathogen Microbacterium nematophilum, due to failure of the bacterium to bind to the host surface. The two separate essential roles of BUS-8 in epidermal morphogenesis add to our growing understanding of the widespread importance of glycobiology in development.
Volume 317(2)
Pages 549-59
Published 2008-5-15
DOI 10.1016/j.ydbio.2008.02.060
PII S0012-1606(08)00191-7
PMID 18395708
MeSH Animals Caenorhabditis elegans / embryology* Caenorhabditis elegans / enzymology* Caenorhabditis elegans Proteins / genetics Caenorhabditis elegans Proteins / physiology* Cloning, Molecular Ephrins / metabolism Epidermis / embryology* Gene Components Glycosyltransferases / genetics Glycosyltransferases / physiology* Green Fluorescent Proteins Microscopy, Electron Morphogenesis / genetics Morphogenesis / physiology* Mutagenesis Signal Transduction / physiology*
IF 2.936
Times Cited 45
C.elegans tm1410