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ORIGINAL ARTICLE
Year : 2021  |  Volume : 12  |  Issue : 3  |  Page : 236-241

In silico estrogen receptor alpha antagonist studies and toxicity prediction of Melia azedarach leaves bioactive ethyl acetate fraction


1 Doctoral Program of Pharmaceutical Sciences, Faculty of Pharmacy, Universitas Airlangga; Department of Pharmaceutical Biology, Faculty of Pharmacy, Widya Mandala Catholic University, Surabaya, Indonesia
2 Doctoral Program of Pharmaceutical Sciences, Faculty of Pharmacy, Universitas Airlangga, Surabaya; Department of Pharmacy, Faculty of Health Sciences, Universitas Muhammadiyah Palangkaraya, Palangka Raya, Indonesia
3 Department of Pharmaceutical Sciences, Faculty of Pharmacy, Universitas Airlangga, Surabaya, Indonesia
4 Department of Pharmacognosy, Graduate School of Biomedical and Health Sciences, Hiroshima University, Higashihiroshima, Japan

Correspondence Address:
Prof. Sukardiman
Faculty of Pharmacy, Universitas Airlangga, Campus C Unair, Jl. Dr. Ir. H. Soekarno Mulyorejo, Surabaya 60115
Indonesia
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/japtr.JAPTR_198_21

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The estrogen hormone dependent accounts for a major cause in the incidence of women breast cancer. Thus, their receptor, especially the estrogen receptor α (ER-α), is becoming a target in endocrine treatment. These ligand-inducible nuclear functions are regulated by an array of phytochemical and synthetic compounds, such as 17 β-estradiol and tamoxifen (4-hydroxytamoxifen [4OHT]). The Chinaberry (Melia azedarach) leaves are known naturally for relieving internal and external diseases. Previous studies revealed the potency of Melia's ethanolic extract and ethyl acetate fractions as anticancer; furthermore, this study aimed to resolve possible ER-α antagonist's mechanism and safety from M. azedarach leaves ethyl acetate fraction contents. Melia's phytochemical content was analyzed with electrospray ionization liquid chromatography-mass spectrometry, while its ER-α antagonist's potency was investigated by in silico. The computational docking was used to 3ERT (a human ER-α-4OHT binding domain complex) with Autodock Vina and related programs. The results presented Energy binding (ΔG) of Melia's quercetin 3-O-(2'',6''-digalloyl)-β-D-galactopyranoside was similar to 4OHT, and lower than its agonist 17 β-estradiol. Furthermore, the toxicity prediction of these compounds were revealed safer than 4OHT. The Melia's leaves ethyl acetate fraction, therefore, is a potential pharmacological material for further studies.


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