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Camptothecin induces autophagy of v-myb-transformed monoblasts

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F04%3A00019786" target="_blank" >RIV/00216224:14310/04:00019786 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Camptothecin induces autophagy of v-myb-transformed monoblasts

  • Original language description

    Programmed cell death (PCD) pathways are frequently damaged during processes of malignant transformation. Abrogation of PCD can significantly affect the response of the cancer cell to a therapy. Therefore, understanding of molecular mechanisms regulatingPCD in cancer cells is of potential clinical interest. In this study we analyzed PCD pathways in the cells of two leukemia cell lines: human U937 promonocytes and chicken v-myb-transformed BM2 monoblasts. PCD of these cells was induced using three agents: arsenic trioxide induces PCD by elevation of the intracellular level of hydrogen peroxide, cycloheximide acts as inhibitor of proteosynthesis and camptothecin inhibits activity of DNA topoisomerase I thus causing DNA damage. We found the mechanisms ofPCD activated in BM2 and U937 cells by these agents partially different. Under conditions when U937 cells undergo caspase-mediated apoptosis, BM2 cells die by caspase-independent pathway. In addition, DNA damage caused by camptothecin re

  • Czech name

    Kamptotecin indukuje autofagii monoblastů transformovaných onkogenem v-myb

  • Czech description

    V této práci jsme studovali dráhy programované buněčné smrti (PCD) v linii lidských promocytů (U937) a kuřecích monoblastů transformovaných v-myb (BM2). PCD těchto buněk byla idnukována třemi činidly: oxidem arsenitým, cykloheximidem a kamptotecinem. Zjistili jsme, že za podmínek, kdy buňky U937 odumírají apoptózou, buňky BM2 používají jinou dráhu PCD, která je nezávislá na kaspázách. Poškození DNA způsobené u buněk BM2 kamptotecinem, způsobuje autofagii. Naše výsledky dokazují onkoprotein v-Myb může být významně zapojen do procesů regulace PCD v leikemických bnkách.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    EB - Genetics and molecular biology

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/GA301%2F03%2F1055" target="_blank" >GA301/03/1055: Study of molecular mechanisms causing v-Myb suppression using proteomics-based approach</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2004

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Differentiation

  • ISSN

    0301-4681

  • e-ISSN

  • Volume of the periodical

    72

  • Issue of the periodical within the volume

    6

  • Country of publishing house

    DE - GERMANY

  • Number of pages

    1

  • Pages from-to

    279

  • UT code for WoS article

  • EID of the result in the Scopus database