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Antitumor Effect of KX-01 through Inhibiting Src Family Kinases and Mitosis

Cited 13 time in Web of Science Cited 13 time in Scopus
Issue Date
2017-07
Citation
Cancer Research and Treatment, Vol.49 No.3, pp.643-655
Keywords
Src kinase inhibitorMitotic catastropheMicrotubulesKX-01Triple negative breast neoplasms
Abstract
Purpose KX-01 is a novel dual inhibitor of Src and tubulin. Unlike previous Src inhibitors that failed to show clinical benefit during treatment of breast cancer, KX-01 can potentially overcome the therapeutic limitations of current Src inhibitors through inhibition of both Src and tubulin. The present study further evaluates the activity and mechanism of KX-01 in vitro and in vivo. Materials and Methods The antitumor effect of KX-01 in triple negative breast cancer (TNBC) cell lines was determined by MU assay. Wound healing and immunofluorescence assays were performed to evaluate the action mechanisms of KX-01. Changes in the cell cycle and molecular changes induced by KX-01 were also evaluated. A MDA-MB-231 mouse xenograft model was used to demonstrate the in vivo effects. Results KX-01 effectively inhibited the growth of breast cancer cell lines. The expression of phos-pho-Src and proliferative-signaling molecules were down-regulated in KX-01-sensitive TNBC cell lines. In addition, migration inhibition was observed by wound healing assay. KX-01-induced G2/M cell cycle arrest and increased the aneuploid cell population in KX-01-sensitive cell lines. Multi-nucleated cells were significantly increased after KX-01 treatment. Furthermore, KX-01 effectively delayed tumor growth in a MDA-MB-231 mouse xenograft model. Conclusion KX-01 effectively inhibited cell growth and migration of TNBC cells. Moreover, this study demonstrated that KX-01 showed antitumor effects through the inhibition of Src signaling and the induction of mitotic catastrophe. The antitumor effects of KX-01 were also demonstrated in vivo using a mouse xenograft model.
ISSN
1598-2998
URI
https://hdl.handle.net/10371/173101
DOI
https://doi.org/10.4143/crt.2016.168
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College of Medicine/School of Medicine (의과대학/대학원)Internal Medicine (내과학전공)Journal Papers (저널논문_내과학전공)
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