1 Ocak 2012 Dergi makalesi Açık Erişim

Yildiz-Unal, Aysegul; Korulu, Sirin; Karabay, Arzu

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{
  "@context": "https://schema.org/", 
  "@id": 87281, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "name": "Yildiz-Unal, Aysegul"
    }, 
    {
      "@type": "Person", 
      "name": "Korulu, Sirin"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Istanbul Tech Univ, Dept Mol Biol & Genet, Fac Sci & Letters, TR-34469 Istanbul, Turkey", 
      "name": "Karabay, Arzu"
    }
  ], 
  "datePublished": "2012-01-01", 
  "description": "The calcium-activated proteolytic enzyme calpain is one of the key proteins that can directly or indirectly drive neurons into apoptosis. The indirect way is through cyclin dependent kinase 5 (CDK5), a non-mitotic kinase, which is upregulated through calpain overactivation and followed by a subsequent increase in p53 and active caspase-3 levels under neurodegenerative conditions. The direct way is the upregulation of p53 by calpain itself, since p53 is a substrate for it. SpeedyRINGO is an atypical cell cycle regulator that has been shown to have protective effects in mitotic cells against apoptosis by inhibiting caspase-3 activation when p53 is present. Our aim was to reveal possible protective effects of SpeedyRINGO against calpain-induced caspase-3 activation in neurons which is crucial in terms of providing novel insights in preventing the caspase-3 activation cascade in neurodegeneration. For this reason, mRNA and protein levels were analyzed by qRT-PCR, western blotting, and immunofluorescence. We show that calpain overactivation leads to the upregulation of p53 and a subsequent increase in active caspase-3 level, indicating activation of apoptotic machinery in neurons. This calpain-directed caspase-3 activation upon upregulation of p53 is inhibited by the expression of SpeedyRINGO in rat hippocampal neurons. Therefore, SpeedyRINGO acts as a savior for neurons that are under apoptotisis due to caspase-3 activation.", 
  "headline": "Q111qc vSpeedyRINGO Inhibits Calpain-Directed Apoptosis in Neurons", 
  "identifier": 87281, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Q111qc vSpeedyRINGO Inhibits Calpain-Directed Apoptosis in Neurons", 
  "url": "https://aperta.ulakbim.gov.tr/record/87281"
}