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Träfflista för sökning "WFRF:(Ohoka A) "

Search: WFRF:(Ohoka A)

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  • Acharya, B. S., et al. (author)
  • Introducing the CTA concept
  • 2013
  • In: Astroparticle physics. - : Elsevier BV. - 0927-6505 .- 1873-2852. ; 43, s. 3-18
  • Journal article (other academic/artistic)abstract
    • The Cherenkov Telescope Array (CTA) is a new observatory for very high-energy (VHE) gamma rays. CTA has ambitions science goals, for which it is necessary to achieve full-sky coverage, to improve the sensitivity by about an order of magnitude, to span about four decades of energy, from a few tens of GeV to above 100 TeV with enhanced angular and energy resolutions over existing VHE gamma-ray observatories. An international collaboration has formed with more than 1000 members from 27 countries in Europe, Asia, Africa and North and South America. In 2010 the CTA Consortium completed a Design Study and started a three-year Preparatory Phase which leads to production readiness of CTA in 2014. In this paper we introduce the science goals and the concept of CTA, and provide an overview of the project. (C) 2013 Elsevier B.V. All rights reserved.
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3.
  • Anton, KA, et al. (author)
  • PKA-regulated VASP phosphorylation promotes extrusion of transformed cells from the epithelium
  • 2014
  • In: Journal of cell science. - : The Company of Biologists. - 1477-9137 .- 0021-9533. ; 127:16Pt 16, s. 3425-3433
  • Journal article (peer-reviewed)abstract
    • At the early stages of carcinogenesis, transformation occurs in single cells within tissues. In an epithelial monolayer, such mutated cells are recognized by their normal neighbors and are often apically extruded. The apical extrusion requires cytoskeletal reorganization and cell shape changes, but it is poorly understood what molecular switches are involved in regulation of these processes. Here, using SILAC-based quantitative mass spectrometry we have identified proteins that are modulated in transformed cells upon their interaction with normal cells. Phosphorylation of VASP at serine 239 is specifically upregulated in RasV12-transformed cells when they are surrounded by normal cells. VASP phosphorylation is required for the cell shape changes and apical extrusion of Ras-transformed cells. Furthermore, PKA is activated in Ras-transformed cells surrounded by normal cells, leading to VASP phosphorylation. These results indicate that the PKA/VASP pathway is a crucial regulator for tumor cell extrusion from the epithelium and shed light on the events occurring at the early stage of carcinogenesis.
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