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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Study of dysregulation of DLX1 protein in myeloid leukemia cells in in vitro and in vivo models
 Jelínková, Alena ; Starková, Júlia (advisor) ; Čuřík, Nikola (referee)
The heterogeneous nature of acute myeloid leukemia (AML) worsens the results of patients treated with standard therapy. Understanding the processes of leukemogenesis can contribute to identification of more appropriate treatment. Family of DLX genes (Distal-less homeobox), belonging to the homeobox genes, are associated with haematological malignancies and solid tumors. In the analysis of expression data, the low level of the DLX1 gene was associated with a worse prognosis of patients with AML. In this work we studied phenotypic changes of cell lines with different expression of the DLX1 gene. We silenced the DLX1 gene in AML cell line (sh cells) and compared it to the parental line with higher expression of DLX1 (NSC cells). By cell cycle analysis and apoptosis assays in vitro and in vivo, we have observed the arrest of sh cells in the G0 phase and a lower number of apoptotic cells. Differences were found when measuring the absolute number of cells in time. In in vitro conditions there were less sh cells, in in vivo environment there was significantly higher number of sh cells engrafted in comparison to NSC cells. Further results have shown that sh cells have lower levels of pro-apoptotic proteins and exhibit a higher level of TGF-β targeting PAI-1 gene that activates replicative senescence. We...
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