Název: Nádorový metabolismus a jeho role v citlivosti leukemických buněk k L-asparagináze
Překlad názvu: Cancer metabolism and its role in the sensitivity to ASNase of leukemic cells to L-asparaginase
Autoři: Alquezar Artieda, Natividad ; Starková, Júlia (vedoucí práce) ; Procházka, Vít (oponent) ; Truksa, Jaroslav (oponent)
Typ dokumentu: Disertační práce
Rok: 2023
Jazyk: eng
Abstrakt: Cancer metabolism and its role in the sensitivity of leukemic cells to L- asparaginase ABSTRACT No ultimate treatment strategy exists for relapsed or non-responsive (15-20%) children with acute lymphoblastic leukemia (ALL). In this study, we aimed to elucidate the impact of metabolic rewiring in leukemic cells on poor therapy response and the emergence of resistance. This dissertation focuses on l-asparaginase (ASNase), a crucial chemotherapeutic agent and its effect on leukemia, using models of leukemic cell lines and primary cells of ALL patients. Cell metabolism was assessed by measuring metabolic pathways and nutrient influx using a Seahorse analyzer and stable isotope tracing. Main findings of the study demonstrated that the ASNase- therapy response was mitigated by the activity of the mechanistic target of rapamycin (mTOR)- regulated biosynthetic pathways. This phenomenon was induced by the bone marrow environment, which enabled the activation of the resistant mechanism in leukemic cells. We next found a correlation between the following metabolic features and lower sensitivity to ASNase: low ATP- linked respiration, high mitochondrial membrane potential and high glycolytic flux before therapy. The latter was shown to have prognostic implications. Moreover, high glycolytic flux was detected in T-ALL...
Klíčová slova: Akt pathway; Asparagine; cellular metabolism; childhood acute lymphoblastic leukemia; glutamine; l-asparaginase; mesenchymal stromal cells; metabolic profile; mTOR signaling pathway; PI3K

Instituce: Fakulty UK (VŠKP) (web)
Informace o dostupnosti dokumentu: Dostupné v digitálním repozitáři UK.
Původní záznam: http://hdl.handle.net/20.500.11956/186148

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-535222


Záznam je zařazen do těchto sbírek:
Školství > Veřejné vysoké školy > Univerzita Karlova > Fakulty UK (VŠKP)
Vysokoškolské kvalifikační práce > Disertační práce