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Antunović, Maja
2014Web Resource
Provider: - Institution: - Data provided by Europeana Collections- Vođeni pretpostavkom da protein FADD (engl. Fas-Associated protein with Death Domain) sudjeluje u prijenosu apoptotskih, nekroptotskih i autofagnih signala nakon primjene NB-UVB (engl. Narrowband Ultraviolet B) zračenja, istražili smo njegovu ulogu smrtonosnog adaptera na modelu mišjih embrionalnih fibroblasta koji nemaju gen za protein FADD. Rezultati ovog istraživanja pokazuju da divlji tip mišjih embrionalnih fibroblasta umire apoptotskim smrtonosnim mehanizmom nakon izlaganja NB-UVB zračenju i to aktivacijom mitohondrijskog puta, ali bez aktivacije proteina p53. Stanice koje nemaju gen za protein FADD nakon izlaganja NB-UVB zračenju umiru programiranom nekrozom i autofagijom, uz aktivaciju kaspaza 3 i 9, ali bez aktivacije proteina p53, Bax i Bcl-2. Rezultati ukazuju da su protein FADD, ali i kinaza RIP1 (engl. Receptor-interacting serine/threonine-protein kinase 1) nužni za pokretanje apoptotskog smrtonosnog mehanizma, dok protein FADD nije nužan za aktivaciju autofagije koja se javlja zajedno s programiranom nekrozom nakon izlaganja stanica NB-UVB zračenju.- Based on the presumption that FADD protein (Fas-Associated protein with Death Domain) intermediates apoptotic, necroptotic and autophagic signals after exposure to NB-UVB (Narrowband Ultraviolet B) irradiation, we tested its role of death adaptor using FADD knockout mouse embrionic fibroblasts. The results show that wild type mouse embryonic fibroblast die by triggering apoptotic death signals through mitochondrial control, but independently of p53. FADD knockout mouse embrionic fibroblasts die by programmed necrosis and autophagy, by activating caspase-3 and -9. Their necrotic programme does not involve p53 nor Bax and Bcl-2. The results show that protein FADD, as well as RIPK1 (Receptor-interacting serine/threonine-protein kinase 1), are essential for triggering apoptotic cell death mechanism. FADD protein is not necessary for autophagic mechanism followed by necroptosis after NB-UVB irradiation.- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
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