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Browsing by Subject "Xenopus laevis"

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    • Article  

      1,2,3-Dithiazoles-new reversible melanin synthesis inhibitors: A chemical genomics study 

      Charalambous, Anna; Koyioni, Maria; Antoniades, Ioanna; Pegeioti, Despoina; Eleftheriou, Iro; Michaelidou, Sophia S.; Amelichev, Stanislav A.; Konstantinova, L. S.; Rakitin, O. A.; Koutentis, Panayiotis Andreas; Skourides, Paris A. (2015)
      A chemical genomic screen of an in-house library of small molecule heterocycles was carried out using Xenopus laevis embryos. This led to the identification of N-(4-chloro-5H-1,2,3-dithiazol-5-ylidene)-4-methoxyaniline ...

    • Article  

      Activation of endogenous FAK via expression of its amino terminal domain in xenopus embryos 

      Petridou, Nicoletta I.; Stylianou, Panayiota; Christodoulou, Neophytos; Rhoads, Daniel S.; Guan, Junlin; Skourides, Paris A. (2012)
      Background: The Focal Adhesion Kinase is a well studied tyrosine kinase involved in a wide number of cellular processes including cell adhesion and migration. It has also been shown to play important roles during embryonic ...

    • Article  

      Addressing the Functional Determinants of FAK during Ciliogenesis in Multiciliated Cells 

      Antoniades, Ioanna; Stylianou, Panayiota; Christodoulou, Neophytos; Skourides, Paris A. (2017)
      We previously identified focal adhesion kinase (FAK) as an important regulator of ciliogenesis in multiciliated cells. FAK and other focal adhesion (FA) proteins associate with the basal bodies and their striated rootlets ...

    • Article  

      Calpain2 protease: A new member of the Wnt/Ca2+ pathway modulating convergent extension movements in Xenopus 

      Zanardelli, Sara; Christodoulou, Neophytos; Skourides, Paris A. (2013)
      Calpains are a family of calcium-dependent intracellular cysteine proteases that regulate several physiological processes by limited cleavage of different substrates. The role of Calpain2 in embryogenesis is not clear with ...

    • Article  

      Cell-Autonomous Ca(2+) Flashes Elicit Pulsed Contractions of an Apical Actin Network to Drive Apical Constriction during Neural Tube Closure 

      Christodoulou, Neophytos; Skourides, Paris A. (2015)
      Neurulation is a critical period in all vertebrates and results in the formation of the neural tube, which gives rise to the CNS. Apical constriction is one of the fundamental morphogenetic movements that drives neural ...

    • Article  

      Comparing intracellular stability and targeting of sulfobetaine quantum dots with other surface chemistries in live cells 

      Muro, E.; Fragola, A.; Pons, T.; Lequeux, N.; Ioannou, Androulla; Skourides, Paris A.; Dubertret, B. (2012)
      The in vivo labeling of intracellular components with quantum dots (QDs) is very limited because of QD aggregation in the cell cytoplasm and/or QD confinement into lysosomal compartments. In order to improve intracellular ...

    • Article  

      A dominant-negative provides new insights into FAK regulation and function in early embryonic morphogenesis 

      Petridou, Nicoletta I.; Stylianou, Panayiota; Skourides, Paris A. (2013)
      FAK is a non-receptor tyrosine kinase involved in a wide variety of biological processes and crucial for embryonic development. In this manuscript, we report the generation of a new FAK dominant negative (FF), composed of ...

    • Article  

      The identification and characterization of KRAB-domain-containing zinc finger proteins 

      Constantinou-Deltas, Constantinos D.; Gilbert, J.; Bartlett, R. J.; Herbstreith, M.; Roses, A. D.; Lee, J. E. (1992)
      The zinc finger motif is a highly conserved tandemly repeated sequence of 28-30 amino acids that was first identified in transcription factor TFIIIA from Xenopus laevis. Subsequently, similar motifs were found and characterized ...

    • Doctoral Thesis  Open Access

      Identification of ciliary adhesion complexes and characterization of the role of FAK in ciliogenesis 

      Antoniades, Ioanna (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2015-11)
      Οι κροσσοί είναι σημαντικές δομές των κυττάρων και αποτελούν οργανίδια τα οποία προεκβάλλουν από την κορυφαία επιφάνεια των κυττάρων συμμετέχοντας σε καθοριστικές λειτουργίες των οργανισμών. Η δυσλειτουργία των κροσσών ...

    • Article  

      Imaging morphogenesis, in Xenopus with Quantum Dot nanocrystals 

      Stylianou, Panayiota; Skourides, Paris A. (2009)
      Mesoderm migration is a well studied morphogenetic movement that takes place during Xenopus gastrulation. The study of mesoderm migration and other morphogenetic movements has been primarily based on in vitro assays due ...

    • Article  

      In vivo, site-specific, covalent conjugation of quantum dots to proteins via split-intein splicing 

      Charalambous, Anna; Andreou, Maria I.; Antoniades, Ioanna; Christodoulou, Neophytos; Skourides, Paris A. (2012)
      The ability to target proteins with nanostructures and/or nanodevices in vivo is important for understanding and controlling their biological function. Quantum dots (QDs) serve as an ideal model nanostructure due to their ...

    • Doctoral Thesis  Open Access

      Molecular cloning and functional characterization of Xenopus Laevis Nucleotide Binding Protein 1 (xNUBP1) during early embryonic development 

      Ioannou, Andriani S. (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2013-06)
      Η Nubp1 (Nucleotide binding protein 1) είναι μια συντηρημένη ΑΤΡάση (τύπου P-loop) που συμμετέχει σε διάφορες διαδικασίες όπως το σχηματισμό των πρωτεϊνών σιδήρου-θείου, το διπλασιασμό του κεντροσωματίου και την ανάπτυξη ...

    • Doctoral Thesis  Open Access

      The role of Calpain2 during vertebrate embryonic development 

      Christodoulou, Neophytos D. (Πανεπιστήμιο Κύπρου, Σχολή Θετικών και Εφαρμοσμένων Επιστημών / University of Cyprus, Faculty of Pure and Applied Sciences, 2015-07)
      Οι Calpains είναι μια οικογένεια ασβεστο-εξαρτώμενων πρωτεασών που ρυθμίζουν διάφορες κυτταρικές λειτουργίες μέσω περιορισμένης πρωτεόλυσης διάφορων υποστρωμάτων. Ο ρόλος της Calpain2 στην εμβρυογένεση δεν είναι ξεκάθαρος ...

    • Article  

      Single-shot optical sectioning using two-color probes in HiLo fluorescence microscopy 

      Muro, E.; Vermeulen, P.; Ioannou, Androulla; Skourides, Paris A.; Dubertret, B.; Fragola, A.; Loriette, V. (2011)
      We describe a wide-field fluorescence microscope setup which combines HiLo microscopy technique with the use of a two-color fluorescent probe. It allows one-shot fluorescence optical sectioning of thick biological moving ...

    • Article  

      Spatially and temporally regulated α6 integrin cleavage during Xenopus laevis development 

      Demetriou, Manolis C.; Stylianou, Panayiota; Andreou, Maria I.; Yiannikouri, Olga; Tsaprailis, George; Cress, Anne E.; Skourides, Paris A. (2008)
      The α6 integrin is essential for early nervous system development in Xenopus laevis. We have previously reported a uPA cleaved form of integrin α6 (α6p), in invasive human prostate cancer tissue, whose presence correlates ...

    • Article  

      Xenopus laevis nucleotide binding protein 1 (xNubp1) is important for convergent extension movements and controls ciliogenesis via regulation of the actin cytoskeleton 

      Ioannou, Androulla; Santama, Niovi; Skourides, Paris A. (2013)
      Nucleotide binding protein 1 (Nubp1) is a highly conserved phosphate loop (P-loop) ATPase involved in diverse processes including iron-sulfur protein assembly, centrosome duplication and lung development. Here, we report ...

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