Cancer
cells are defined by abnormal and unrestricted mitotic divisions, therefore
targeting mitosis is a useful strategy for cancer treatment. Two groups of
drugs that are most successfully used in the treatment of several types of
cancer, taxanes and vinca
alkaloids, exhibit their anti-tumor effects by causing a mitotic arrest.
However, not much is known about whether being arrested in mitosis affects the
sensitivity of cells to tumor-related stresses, such as oxidative and osmotic
stresses. In this study, we investigated whether mitosis affects the
sensitivity of Saccharomyces cerevisiae
cells to H2O2-induced oxidative stress and
sorbitol-induced osmotic stress. Mitotic and G1-arrests were induced by
nocodazole and alpha factor, respectively. The effects of nocodazole or alpha
factor treatments on the sensitivity of wild type (WT) and MAD3 deletion (mad3Δ) strains to
oxidative stress and osmotic stress were evaluated by the spotting and coloni
forming unit (cfu) assays as well as detection of reactive oxygen species (ROS)
production. Data were
analyzed using Student’s t-test and expressed as standard deviation (std), p<0.05 was considered significant. Our data indicate that mitosis
significantly increases resistance to oxidative stress, however it
does not have any significant effect on the osmotic stress resistance in yeast.
Primary Language | English |
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Subjects | Structural Biology |
Journal Section | Research Articles |
Authors | |
Publication Date | February 1, 2020 |
Submission Date | May 2, 2019 |
Acceptance Date | October 17, 2019 |
Published in Issue | Year 2020 |
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.