Abstract 5,7-Dihydroxy-2-(1,2-isopropyldioxy-4-oxo-cyclohex-5-enyl)-chromen-4-one (DICO) is a novel non-aromatic B-ring flavonoid, isolated mainly from Macrothelypteris viridifrons and has anti-tumour properties. In this study, we investigated the cytotoxicity and underlying biochemical pathways leading… Click to show full abstract
Abstract 5,7-Dihydroxy-2-(1,2-isopropyldioxy-4-oxo-cyclohex-5-enyl)-chromen-4-one (DICO) is a novel non-aromatic B-ring flavonoid, isolated mainly from Macrothelypteris viridifrons and has anti-tumour properties. In this study, we investigated the cytotoxicity and underlying biochemical pathways leading to cell death, in response to DICO treatment of a human colon cancer cell line HT-29. Our results indicated that DICO induced apoptosis by elevating the generation of reactive oxygen species, which could be quenched by the antioxidants N-acetyl cysteine. In addition, activation of signal transducer and activator of transcription 3 and suppression of nuclear factor kappa B played a crucial role in DICO-induced apoptosis. Overall, our results provide mechanistic insights into the apoptotic action of a potential anti-tumour drug, DICO. Graphical Abstract
               
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