title: Notch inhibition of RAS signaling through MAP kinase phosphatase LIP-1 during C. elegans vulval development.
abstract: During Caenorhabditis elegans vulval development, a signal from the anchor cell stimulates the RTK/RAS/MAPK (receptor tyrosine kinase/RAS/mitogen-activated protein kinase) signaling pathway in the closest vulval precursor cell P6.p to induce the primary fate. A lateral signal from P6.p then activates the Notch signaling pathway in the neighboring cells P5.p and P7.p to prevent them from adopting the primary fate and to specify the secondary fate. The MAP kinase phosphatase LIP-1 mediates this lateral inhibition of the primary fate. LIN-12/NOTCH up-regulates lip-1 transcription in P5.p and P7.p where LIP-1 inactivates the MAP kinase to inhibit primary fate specification. LIP-1 thus links the two signaling pathways to generate a pattern.
authors.affiliation: Division of Cancer Research, Department of Pathology, University of Zürich, Schmelzbergstrasse 12, CH-8091 Zürich, Switzerland.
authors.forename: T
authors.initials: T
authors.lastname: Berset
authors.forename: E F
authors.initials: EF
authors.lastname: Hoier
authors.forename: G
authors.initials: G
authors.lastname: Battu
authors.forename: S
authors.initials: S
authors.lastname: Canevascini
authors.forename: A
authors.initials: A
authors.lastname: Hajnal
mesh_terms: D020816:Amino Acid Motifs; D000595:Amino Acid Sequence; D000818:Animals; D019521:Body Patterning; D017173:Caenorhabditis elegans / Q000166:cytology / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism; D029742:Caenorhabditis elegans Proteins; D020134:Catalytic Domain; D018797:Cell Cycle Proteins; D005260:Female; D005786:Gene Expression Regulation; D017238:Genes, Helminth; D015801:Helminth Proteins / Q000378:metabolism*; D020935:MAP Kinase Signaling System; D008565:Membrane Proteins / Q000378:metabolism*; D019950:Mitogen-Activated Protein Kinase 1; D008969:Molecular Sequence Data; D009154:Mutation; D017346:Protein Serine-Threonine Kinases / Q000378:metabolism*; D017434:Protein Structure, Tertiary; D017027:Protein Tyrosine Phosphatases / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism*; D020794:Receptor Protein-Tyrosine Kinases / Q000378:metabolism; D051880:Receptors, Notch; D011993:Recombinant Fusion Proteins / Q000378:metabolism; D015398:Signal Transduction; D013234:Stem Cells / Q000166:cytology / Q000378:metabolism; D015854:Up-Regulation; D014844:Vulva / Q000166:cytology / Q000254:growth & development; D018631:ras Proteins / Q000378:metabolism*
chemical_list: D029742:Caenorhabditis elegans Proteins; D018797:Cell Cycle Proteins; D015801:Helminth Proteins; C082460:Lin-12 protein, C elegans; D008565:Membrane Proteins; D051880:Receptors, Notch; D011993:Recombinant Fusion Proteins; D020794:Receptor Protein-Tyrosine Kinases; D017346:Protein Serine-Threonine Kinases; D019950:Mitogen-Activated Protein Kinase 1; C085697:mpk-1 protein, C elegans; C421904:lip-1 protein, C elegans; D017027:Protein Tyrosine Phosphatases; D018631:ras Proteins