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Coumarin derivative 7-isopentenyloxycoumarin induces in vivo antitumor activity by inhibit angiogenesis via CCL2 chemokine decrease

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Abstract

Cancer is one of the most urgent problems in medicine. In recent years, cancer is the second leading cause of death globally. In search for more effective and less toxic treatment against cancer, natural products are used as prototypes in the synthesis of new anticancer drugs. The aim of this study was to investigate the in vivo toxicity and the mechanism of antitumor action of 7-isopentenyloxycoumarin (UMB-07), a coumarin derivative with antitumor activity. The toxicity was evaluated in vitro (hemolysis assay), and in vivo (micronucleus and acute toxicity assays). Ehrlich ascites carcinoma model was used to evaluate in vivo antitumor activity of UMB-07 (12.5, 25, or 50 mg/kg, intraperitoneally, i.p.), after 9 days of treatment, as well as toxicity. UMB-07 (2000 μg/mL) induced only 0.8% of hemolysis in peripheral blood erythrocytes of mice. On acute toxicity assay, LD50 (50% lethal dose) was estimated at around 1000 mg/kg (i.p.), and no micronucleated erythrocytes were recorded after UMB-07 (300 mg/kg, i.p.) treatment. UMB-07 (25 and 50 mg/kg) reduced tumor volume and total viable cancer cells. In the mechanism action investigation, no changes were observed on the cell cycle analysis; however, UMB-07 reduced peritumoral microvessels density and CCL2 chemokine levels. In addition, UMB-07 showed weak toxicity on biochemical, hematological, and histological parameters after 9 days of antitumor treatment. The current findings suggest that UMB-07 has low toxicity and exerts antitumor effect by inhibit angiogenesis via CCL2 chemokine decrease.

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Funding

This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior-Brasil (CAPES)-Finance Code 001and CNPq.

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RMDC and JAFS conceived and designed the experiments; RMDC, TMB, TKGS, VMM, JAFS, RAA, RCF, FCL, MTB, and RCV performed the experiments; RMDC, JAFS, and MVS analyzed the data; FJBMJ and RSAA synthesized and provided the UMB-07; GCV performed the histopathological analysis; RMDC and MVS wrote the paper.

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Correspondence to Marianna Vieira Sobral.

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The authors declare that they have no competing interests.

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All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.

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da Cruz, R.M.D., Batista, T.M., de Sousa, T.K.G. et al. Coumarin derivative 7-isopentenyloxycoumarin induces in vivo antitumor activity by inhibit angiogenesis via CCL2 chemokine decrease. Naunyn-Schmiedeberg's Arch Pharmacol 393, 1701–1714 (2020). https://doi.org/10.1007/s00210-020-01884-4

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  • DOI: https://doi.org/10.1007/s00210-020-01884-4

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