National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Influencing Notch signalling in virus associated tumours
Bujnovská, Ludmila ; Šmahelová, Jana (advisor) ; Grantz Šašková, Klára (referee)
The Notch signalling pathway affects cell differentiation, apoptosis and proliferation. It is an evolutionarily conserved signalling pathway important during embryogenesis and ontogenesis. Its deregulation can lead to carcinogenesis. Cells of various tumour types often contain gene mutations or other abnormalities in the Notch pathway. Its function with regard to oncogenesis has a dual character - in some cases it acts as an oncogenic pathway, in others it has a tumour-suppressive effect. This depends on the cellular context. A large group of tumours with proven abnormalities in the Notch signalling are head and neck squamous cell carcinomas (HNSCC). It is the 7th most common tumour type and the lethality rate is high. Almost 25 % of these tumours are etiologically related to human papillomavirus (HPV) infection. The cell cycle signalling pathways, including the Notch pathway, are the primary target of oncogenic viruses where HPV are no exception. This thesis describes changes in the Notch signalling pathway in HPV-induced HNSCC and the effect of viral oncoproteins E6 and E7 on this signalling pathway.

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