Sökning: "Wingless"

Visar resultat 1 - 5 av 22 avhandlingar innehållade ordet Wingless.

  1. 1. The role of polysaccharide modifications during Drosophila development

    Författare :Florian Lüders; Institutionen för experimentell medicinsk vetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; ontogeni; growth animal ; embryologi; Development biology; Decapentaplegic; Hedgehog; Wingless; Sulfation; Pipe; Glycosaminoglycan; Glycosyltransferase; ontogeny; embryology; Utvecklingsbiologi;

    Sammanfattning : Glucosides attached to proteins and lipids have been shown to modulate the activity of signal transduction pathways regulating growth and patterning processes during animal development. In particular, O-linked glycans such as glycosaminoglycans (GAGs) have been implicated in modulation of growth factor signaling pathways. LÄS MER

  3. 2. Tumor progression in the ovary and colon. The interaction of Wnt-signaling, transcription and formation of prostaglandins

    Författare :Katarina Rask; Göteborgs universitet; []
    Nyckelord :CCAAT Enhancer Binding Proteins C EBPs ; Wingless Wnt Wnt signaling pathway; Cyclooxygenases COXs ; colorectal cancer CRC ; epithelial ovarian cancer EOC ;

    Sammanfattning : Alterations in cell-cell adhesion, intracellular signaling and transcriptional regulation are common events during transformation of cells to the malignant phenotype. Different cellular defense mechanisms, e.g. inflammatory responses, mediated by prostaglandins, have also been associated with tumor development. LÄS MER

  4. 3. Early Rostrocaudal Patterning of the CNS

    Författare :Ulrika Nordström; Thomas Edlund; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; CNS development; neural patterning; neural specification; Wnt; FGF; RA; Isthmic organizer; motor neurons; rostrocaudal patterning.; Developmental biology; Utvecklingsbiologi;

    Sammanfattning : The transformation of an initially uniform population of epiblast cells into an intricately complex central nervous system (CNS) is one of the most fascinating processes during embryonic development. Presumptive neural cells are initially specified as cells of forebrain character. LÄS MER

  5. 4. Studies on the role of Dally-like during Drosophila development

    Författare :Narmada Khare; Institutionen för experimentell medicinsk vetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Clinical biology; Drosophila; Dally-like; proteoglycans; signal transduction; Klinisk biologi;

    Sammanfattning : A cell is constantly subjected to cues from its surroundings in the form of signalling molecules e.g. Wingless (Wg), Insulin-like growth factor (IGF). As a result, important decisions regarding processes like growth, division, differentiation or migration are made. LÄS MER

  7. 5. Phylogenetic perspective on host plant use, colonization and speciation in butterflies

    Författare :Elisabet Weingartner; Sören Nylin; Niklas Wahlberg; Felix Sperling; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Oscillation hypothesis; speciation; Polygonia; Celastrina; Pararge; Terrestrial; freshwater and marine ecology; Terrestisk; limnisk och marin ekologi; zoologisk ekologi; Animal Ecology;

    Sammanfattning : In this thesis we have studied speciation in three butterfly genera Polygonia (Nymphalidae, Nymphalini), Pararge (Nymphalidae, Satyrinae) and Celastrina (Lycaenidae: Polyommatinae). In the first paper a dated phylogeny, based on molecular data, of Polygonia was constructed. We found strong conflict between the nDNA and mtDNA datasets. LÄS MER