Summary
Background Hepatocellular carcinoma (HCC) is one of the most common cancers with a high mortality rate due to metastasis and relapse. Purpose Here, we reported a small-molecule pyridazinone compound, designated as IMB5036. Its antitumor activity against HCC and underlying mechanism were studied. Methods In vitro cytotoxicity, apoptosis, DNA breaks, and cell motility assays were performed. Protein expression was analyzed by Western blot and microarray analysis. A xenograft tumor model in athymic mice was used to evaluate the antitumor activity. Results IMB5036 displayed potent cytotoxicity against various HCC cell lines. It caused double DNA breakages and induced cell death via apoptosis. It also significantly inhibited the motility of HCC cells. Western blot showed that IMB5036 induced the up-regulation of E-cadherin, while down-regulation of N-cadherin. The gene expression profile analysis and Western blot assay revealed that IMB5036 down-regulated the expression of Tau protein. Analysis of the TCGA dataset revealed that high expression of Tau decreased the survival rate of HCC patients. In vivo experiments proved that IMB5036 significantly inhibited the growth of HCC xenografts in athymic mice. Conclusions These results collectively demonstrate IMB5036 can be a promising therapeutic candidate for patients with HCC.
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The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
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This work was supported by the CAMS Innovation Fund for Medical Sciences (No. 2021-I2M-1-030) and National Natural Science Foundation of China (No. 81201665 and 81972325).
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X.L., Q.Z. and Y.Q.D. performed the experiments, and analyzed the data. J.H.G. designed and performed the experiments, analyzed the data, and revised the manuscript. L.J.Y. revised the manuscript. Y.B.Z. designed the experiments, analyzed the data, and wrote the manuscript. T.Y. performed the analysis and revised the manuscript.
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Lv, X., Zhao, Q., Dong, Y. et al. IMB5036, a novel pyridazinone compound, inhibits hepatocellular carcinoma growth and metastasis. Invest New Drugs 40, 487–496 (2022). https://doi.org/10.1007/s10637-021-01210-6
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DOI: https://doi.org/10.1007/s10637-021-01210-6