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Aqueous Extract of Leaves and Flowers of Reduces the Proliferation of Cancer Cells by Underexpressing Some Genes and Activating Caspase-3

Overview
Journal Biochem Res Int
Publisher Wiley
Specialty Biochemistry
Date 2024 Feb 19
PMID 38371392
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Abstract

The increasing prevalence of cancers and the multiple side effects of cancer treatments have led researchers to constantly search for plants containing bioactive compounds with cell death properties. This work aimed at evaluating the antiproliferative effect of an extract. After evaluation of the antioxidant potential of the three extracts of (aqueous (AE-Ac), hydroethanolic (HEE-Ac), and ethanolic (EE-Ac)) through the scavenging of DPPH and NO radicals, the extract with the best antioxidant activity was selected for bioactive compound assessment and antiproliferative tests. Subsequently, the cytotoxic activity was evaluated on the viability of breast (MCF-7), brain (CT2A, SB-28, and GL-261), colon (MC-38), and skin (YUMM 1.7 and B16-F1) cancer lines using the MTT method. Then, the line where the extract was the most active was selected to evaluate the expression of certain genes involved in cancerogenesis by RT-PCR and the expression of cleaved caspase-3 involved in cell death mechanism by western blot. The AE-Ac showed the best scavenging activity with ICs of 0.52 and 0.02 for DPPH and NO, respectively. This AE-Ac was found to contain alkaloids, flavonoids, and tannins and was more active on YUMM 1.7 cells (IC = 149.42 and 31.99 g/mL for 24 and 48 h, respectively). Results also showed that AE-Ac downregulated the expression of inflammation (IL-1b ( = 0.017) and IL-6 ( = 0.028)), growth factors (PDGF ( = 0.039), IGF ( = 0.034), EF( = 0.038), and EF( = 0.016)), and antiapoptotic protein genes (Bcl-2 ( = 0.028) and Bcl-6 ( = 0.039)). The cleaved caspase-3 was positively modulated by the AE-Ac inducing thus cell death by apoptosis. AE-Ac showed inhibitory effects on the expression of genes involved in cancer progression making it a potential health intervention agent that can be exploited in cancer therapy protocols.

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