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Published on: March 5, 2018
Molecular Docking of Phytochemicals Involved in Apoptotic Pathway and Their Interactions with CASP3, CASP9, and BAX
Madiha Younas1, Muhammad Zubair2, Muhammad Yousaf Shani3
1College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China.
Abstract:
As liver cancer is a leading cause of death all over the world, there is a need to explore new therapeutic strategies. This study presents an in silico analysis of the genes Caspase3 (CASP3), Caspase9 (CASP9), and BCL-2-associated X protein (BAX) in liver cancer cells to evaluate the apoptosis profile following exposure to green-synthesized plant extract. We assessed the modulatory effects of phytochemicals on the apoptotic pathway by means of bioinformatics tools and a publicly available gene expression dataset. Our findings revealed the possible mechanistic basis of the pro-apoptotic activity observed in vitro, utilizing a structure-based molecular docking method. The biologically synthesized AgNPs at a concentration of 50 µg/mL induced an approximately 4-fold increase in the mRNA expression levels of CASP3, CASP9, and BAX compared with chemically synthesized AgNPs, as determined by qPCR. Rutin was the compound with the highest binding affinities toward all three proteins, with ΔG values of -9.3 kcal/mol (Caspase3), -9.1 kcal/mol (Caspase9), and -9.0 kcal/mol (BAX). These findings offer new insights about the molecular mechanisms that support the cytotoxicity of phytochemicals, and simultaneously highlight the potential of green nanotechnology for the development of therapeutic strategies for liver cancer.
Insights
Green-synthesized nanoparticles and phytochemicals show promise for liver cancer therapy. They significantly increase apoptosis-related gene expression, offering a new therapeutic strategy.
Area of Science:
- Biochemistry
- Nanotechnology
- Oncology
Background:
- Liver cancer is a major global health concern, necessitating novel therapeutic approaches.
- Exploring natural compounds and green synthesis methods offers potential for developing new cancer treatments.
Purpose of the Study:
- To investigate the in silico apoptosis-modulating effects of green-synthesized plant extract components on liver cancer cells.
- To evaluate the potential of green nanotechnology in developing novel liver cancer therapeutics.
Main Methods:
- In silico analysis of Caspase-3 (CASP3), Caspase-9 (CASP9), and BCL-2-associated X protein (BAX) genes.
- Bioinformatics tools and gene expression datasets were used to assess phytochemical effects on the apoptotic pathway.
- Structure-based molecular docking was employed to determine binding affinities of phytochemicals to target proteins.
Main Results:
- Green-synthesized silver nanoparticles (AgNPs) at 50 µg/mL increased mRNA expression of CASP3, CASP9, and BAX by approximately 4-fold compared to chemically synthesized AgNPs.
- Rutin exhibited the highest binding affinities to Caspase-3, Caspase-9, and BAX, with ΔG values of -9.3, -9.1, and -9.0 kcal/mol, respectively.
- Phytochemicals demonstrated pro-apoptotic activity, providing mechanistic insights into their cytotoxicity.
Conclusions:
- The study highlights the potential of green nanotechnology and phytochemicals as therapeutic strategies for liver cancer.
- Findings offer new insights into the molecular mechanisms underlying the cytotoxicity of phytochemicals in liver cancer cells.
- Green-synthesized nanoparticles show promise for enhancing the efficacy of apoptosis induction in liver cancer treatment.
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