α,β-Unsaturated carbonyl compounds and 2-methylpyridines containing a 4-(dialkylamino)phenyl substituent can be used as fluorescent labeling reagents for the quantitative analysis of carnitine. 6-(4-Aminophenyl)-3-cyano-4-[4-(diethylamino)phenyl]-2-methylpyridine showed the best properties among the synthesized reagents.
Antiproliferative activity and p53 upregulation effects of chalcones on human breast cancer cells
作者:Mariana Bastos dos Santos、Daiane Bertholin Anselmo、Jéssica Gisleine de Oliveira、Bruna V. Jardim-Perassi、Diego Alves Monteiro、Gabriel Silva、Eleni Gomes、Ana Lucia Fachin、Mozart Marins、Débora Aparecida Pires de Campos Zuccari、Luis Octavio Regasini
DOI:10.1080/14756366.2019.1615485
日期:2019.1.1
Chalcones are valuable structures for drug discovery due to their broad bioactivity spectrum. In this study, we evaluated 20 synthetic chalcones against estrogen-receptor-positive breast cancer cells (MCF-7 line) and triple-negative breast cancer (TNBC) cells (MDA-MB-231 line). Antiproliferative screening by MTT assay resulted in two most active compounds: 2-fluoro-4'-aminochalcone (11) and 3-pyridyl-4'-aminochalcone (17). Their IC50 values ranged from 13.2 to 34.7 mu M against both cell lines. Selected chalcones are weak basic compounds and maintained their antiproliferative activity under acidosis conditions (pH 6.7), indicating their resistance to ion-trapping effect. The mode of breast cancer cells death was investigated and chalcones 11 and 17 were able to induce apoptosis rather than necrosis in both lines. Antiproliferative target investigations with MCF-7 cells suggested 11 and 17 upregulated p53 protein expression and did not affect Sp1 protein expression. Future studies on chalcones 11 and 17 can define their in vivo therapeutic potential.