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Computational Study of the Potential Molecular Target for Anti-breast Cancer Activity of Limonoid Derivatives from Chisocheton sp.

Nurlelasari Nurlelasari,Ade Rizqi Ridwan Firdaus,Desi Harneti,Nenden Indrayati,Umi Baroroh,Muhammad Yusuf.


Limonoid is a class of natural compounds that is originated from lemon and other citrus fruits. However, derivatives of limonoids are also produced in other plants, such as Chisocheton sp. Limonoids from Chisocheton sp. showed various biological activities, including anticancer. Nevertheless, the molecular target for anticancer activity of these compounds is still unclear. Many studies suggested nuclear receptors (NR) as the protein target for limonoids. In this study, we investigated the possible NR as a molecular target for limonoids from Chisocheton sp. using molecular docking and molecular dynamics simulation. Four limonoids showed activity to the MCF-7, a breast cancer cell line. Docking study selected two of eleven nuclear receptors expressed in breast tissue, progesterone receptor (PR), and glucocorticoid receptor (GR), as the most potential target for limonoids. The docking pose were further observed by molecular dynamics simulation. Both receptors showed stable molecular interactions with limonoids, indicated with a low deviation of binding site residues. Interestingly, simulations of PR and GR showed the alteration of Helix-12, which is one of the key factors to the antagonist action of the ligand. It is hoped that the findings could shed insight into the further molecular assay development of anticancer agents based on limonoids.

Key words: limonoids, chisocheton, anticancer, nuclear receptor, molecular dynamics simulation

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