Andrade, Silmara NunesEvangelista, Fernanda Cristina GontijoSeckler, Diego Eduardo LimaMarques, Deisielly RibeiroFreitas, Tulio ResendeNunes, Renata RachideOliveira, Júlia Teixeira deRibeiro, Rosy Iara Maciel de AzambujaSantos, Helio Batista dosThomé, Ralph GruppiTaranto, Alex GutterresSantos, Fabio Vieira dosViana, Gustavo Henrique RibeiroFreitas, Rossimiriam Pereira deHumberto, Jorge LuizSabino, Adriano de Paula2019-05-032019-05-032018ANDRADE, S. N. et al. Synthesis, cytotoxic activity, and mode of action of new Santacruzamate A analogs. Medicinal Chemistry Research, v. 27, n. 11/12, p. 2397–2413, dez. 2018. Disponível em: <https://link.springer.com/article/10.1007/s00044-018-2244-3>. Acesso em: 7 mar. 2019.1554-8120http://www.repositorio.ufop.br/handle/123456789/11179Breast and ovarian cancer are the most common cancers in women. Available cancer treatments, in general, have limited efficacy and frequent, undesirable side effects. Recently, scientists have focused on searching for new epigenetic modulators such as inhibitors of DNA methyltransferases and histone deacetylases (HDACs), with novel properties and selectivity. We report the synthesis of seven new analogs of Santacruzamate A. Molecular modeling showed that compounds 3–9 presented the best binding energies (kcal/mol) against HDAC4 compared to that of crystallographic ligand. The compounds were evaluated against MCF-7 and MDA-MB-231 (breast cancer), TOV-21G (ovarian adenocarcinoma), and WI-26VA4 (non-tumor lung fibroblasts) cells. Compound 5, the most potent and selective of the series, exhibited remarkably enhanced anticancer potency, with IC50 values for the tumor cells of 24.3–44.93 μM, compared with that of etoposide (12–18.57 μM) and doxorubicin (2.1–4.37 μM). Further investigation showed that compound 5 could promote DNA damage, increase the activity of caspases-3 and -9, and upregulate mRNA levels of p21, TP53, and BAK, suggesting apoptotic cell death of the tumor cells via the intrinsic pathway. This study demonstrated that synthetic analogs of santacruzamate A with zinc-linked groups are effective for improving both HDAC inhibition and antitumor activity.en-USrestritoApoptosisCancerArtigo publicado em periodicohttps://link.springer.com/article/10.1007%2Fs00044-018-2244-3https://doi.org/10.1007/s00044-018-2244-3