Abstract

Linifanib is known as an inhibitor of receptor tyrosine kinase. Even though it has been widely recognized as efficient inhibitor of receptor tyrosine kinases, anti-carcinogenic effect has not been investigated enough in ovarian cancer. In this study, we investigated the anti-cancer effect of linifanib on human ovary cancer SKOV3 cells. WST-1, cell counting assay, and observation of morphological changes were performed to evaluate the cytotoxic effect of linifanib in SKOV3 cells. We analyzed SKOV3 cells treated with linifanib using Muse cell analyzer. We focused on investigating the effect of linifanib on DNA damage in nucleus. Additionally, intracellular reactive oxygen species (ROS) level was measured through Muse cell analyzer. Western blotting was performed to evaluate the protein expression level related to apoptosis. We found that linifanib inhibited proliferation of SKOV3 cells. Our results showed that linifanib induced apoptosis in SKOV3 cells. Additionally, linifanib induced DNA damage in SKOV3 cells. We found that intracellular ROS level increased after treatment of linifanib in SKOV3 cells. Interestingly, FOXO3 was transferred from cytosol into nucleus after linifanib treatment. Taken together, our results supported that linifanib inhibited the proliferation of human ovary cancer SKOV3 cells, which suggested that linifanib might have the potential to be developed as drugs for ovarian cancer treatment.

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