Abstract
Colorectal cancer (CRC) is the third most prevalent malignancy worldwide. New understandings about this disease are urgently required to guide clinical therapies. In this study, we focused on the effects of the small molecule PMN on CRC cells. PMN dose-dependently inhibited CRC cell proliferation through inducing mitotic arrest and apoptosis. PMN induced mitotic arrest via the disruption of spindle apparatus by inhibiting microtubule polymerization. PMN-induced mitotic arrest resulted in apoptosis and p53 upregulation. Furthermore, p53 upregulation sensitized PMN-induced mitotic cells to apoptosis. This study deepens the understanding of the effects of p53 on the response of CRC cells to PMN, providing the basis for the potential development of PMN as a lead compound of microtubule-destabilizers for p53-positive CRC treatment.
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