Zelnorm, an agonist of 5-Hydroxytryptamine 4-receptor, acts as a potential antitumor drug by targeting JAK/STAT3 signaling

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  • 作者:Zhang Lei, Song Qiaoling, Zhang Xinxin, Li Li, Xu Ximing, Xu Xiaohan, Li Xiaoyu, Wang Zhuoya, Lin Yuxi, Li Xin, Li Mengyuan, Su Fan, Wang Xin, Qiu Peiju, Guan Huashi, Tang Yu, Xu Wenfang, Yang Jinbo, Zhao Chenyang
  • 期刊:INVESTIGATIONAL NEW DRUGS
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The Janus kinase (JAK)/signal transducer and activator of transcription 3 (STAT3) signaling pathway plays central roles in cancer cell growth and survival. Drug repurposing strategies have provided a valuable approach for developing antitumor drugs. Zelnorm (tegaserod maleate) was originally designed as an agonist of 5-hydroxytryptamine 4 receptor (5-HT4R) and approved by the FDA for treating irritable bowel syndrome with constipation (IBS-C). Through the use of a high-throughput drug screening system, Zelnorm was identified as a JAK/STAT3 signaling inhibitor. Moreover, the inhibition of STAT3 phosphorylation by Zelnorm was independent of its original target 5-HT4R. Zelnorm could cause G1 cell cycle arrest, induce cell apoptosis and inhibit the growth of a variety of cancer cells. The present study identifies Zelnorm as a novel JAK/STAT3 signaling inhibitor and reveals a new clinical application of Zelnorm upon market reintroduction.

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