- Tytuł:
- Partial characterization of human choriocarcinoma cell line JAR cells in regard to oxidative stress.
- Autorzy:
-
Hallmann, Anna
Klimek, Jerzy
Masaoka, Makoto
Kamiński, Marcin
Kędzior, Jakub
Majczak, Anna
Niemczyk, Edyta
Woźniak, Michał
Trzonkowski, Piotr
Wakabayashi, Takashi - Powiązania:
- https://bibliotekanauki.pl/articles/1041517.pdf
- Data publikacji:
- 2004
- Wydawca:
- Polskie Towarzystwo Biochemiczne
- Tematy:
-
menadione
flow cytometry
JAR cells
placenta
H2O2
oxidative stress - Opis:
- Characterization of free radical-induced cell injury processes of placenta cells is of vital importance for clinical medicine for the maintenance of intrauterine fetal life. The present study has analyzed cell injury processes in cells of the choriocarcinoma cell line JAR treated with menadione, an anticancer drug, and Hg2O2 in comparison to osteosarcoma 143B cells using electron microscopic and flow cytometric techniques. Flow cytometry on JAR cells exposed to 100 μM menadione and double-stained with Annexin V and propidium iodide (PI) detected apoptotic cells reaching the maximum after 4 h of incubation with a rapid decrease thereafter. Viable cells became decreased to 46% of the control after 2 h of incubation, reaching 5% after 4 h. Cells stainable with both Annexin V and PI began to increase distinctly after 2 h of incubation, reaching 55% after 4 h. Electron microscopy showed that cells stainable with both dyes specified above had condensed nuclei and swollen cytoplasm, suggesting that they were undergoing a switch of the cell death mode from apoptosis to necrosis. On the other hand, 90% of 143B cells remained intact after 4 h of menadione treatment although the intracellular levels of superoxide were always higher than those of JAR cells treated with the drug. In contrast, JAR cells were more resistant than 143B cells to H2O2-induced cytotoxicity. These results may suggest that cytotoxicity of menadione cannot be explained simply by oxygen free radicals generated from the drug. The resistance of JAR cells to oxygen free radical-induced cytotoxicity may be advantageous for intrauterine fetal life.
- Źródło:
-
Acta Biochimica Polonica; 2004, 51, 4; 1023-1038
0001-527X - Pojawia się w:
- Acta Biochimica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł