4.6 Article

Inhibiting WEE1 Augments the Antitumor Efficacy of Cisplatin in Urothelial Carcinoma by Enhancing the DNA Damage Process

Journal

CELLS
Volume 12, Issue 11, Pages -

Publisher

MDPI
DOI: 10.3390/cells12111471

Keywords

WEE1; urothelial carcinoma; chemotherapy; DNA damage; cell cycle; TP53 mutation

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The combination of the Wee1 inhibitor AZD-1775 with cisplatin shows promising anticancer efficacy in urothelial carcinoma (UC) and represents an innovative therapeutic strategy for overcoming resistance to cisplatin-based chemotherapy in UC.
Urothelial carcinoma (UC) is characterized by a high incidence of TP53 mutation, and overcoming resistance to cisplatin-based chemotherapy in UC is a major concern. Wee1 is a G2/M phase regulator that controls the DNA damage response to chemotherapy in TP53-mutant cancers. The combination of Wee1 blockade with cisplatin has shown synergistic efficacy in several types of cancers, but little is known regarding UC. The antitumor efficacy of the Wee1 inhibitor (AZD-1775) alone or in combination with cisplatin was evaluated in UC cell lines and a xenograft mouse model. AZD-1775 enhanced the anticancer activity of cisplatin by increasing cellular apoptosis. AZD-1775 inhibited the G2/M checkpoint, improving the sensitivity of mutant TP53 UC cells to cisplatin by enhancing the DNA damage process. We confirmed that AZD-1775 combined with cisplatin reduced tumor volume and proliferation activity and increased the markers of cell apoptosis and DNA damage in the mouse xenograft model. In summary, the Wee1 inhibitor AZD-1775 combined with cisplatin elicited a promising anticancer efficacy in UC, and constitutes an innovative and promising therapeutic strategy.

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