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Bioactive constituents isolated from Atractylodes lancea (Thunb.) DC. rhizome exhibit synergistic effect against cholangiocarcinoma cell

Authors Martviset P, Chaijaroenkul W, Muhamad P, Na-Bangchang K

Received 12 June 2018

Accepted for publication 11 August 2018

Published 25 October 2018 Volume 2018:10 Pages 59—64

DOI https://doi.org/10.2147/JEP.S177032

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Cristina Weinberg

Peer reviewer comments 2

Editor who approved publication: Professor Bal Lokeshwar


Pongsakorn Martviset,1,2 Wanna Chaijaroenkul,1,3 Phunuch Muhamad,1,4 Kesara Na-Bangchang1,3,5

1Center of Excellence in Molecular Biology and Pharmacology of Malaria and Cholangiocarcinoma, Chulabhorn International College of Medicine, Thammasat University, Pathumthani, Thailand; 2School of Preclinic, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, Thailand; 3Graduate Program in Bioclinical Sciences, Chulabhorn International College of Medicine, Thammasat University, Pathumthani, Thailand; 4Drug Discovery and Development Center, Thammasat University, Pathumthani, Thailand; 5WHO-TDR Clinical Coordination and Training Center in Asia and Western Pacific, Pathumthani, Thailand

Background: Cholangiocarcinoma (CCA) is the primary type of bile duct cancer with high morbidity and mortality, particularly in patients with advanced-stage disease. Treatment of CCA remains unsatisfactory due to the lack of sensitive and specific diagnostic tool for early detection as well as effective chemotherapeutics.
Purpose: To investigate cytotoxic interactions between the three major constituents of the rhizomes of Atractylodes lancea (Thunb.) DC., ie, β-eudesmol (BE), atractylodin (AT), and hinesol (HS), against CCA cell line.
Methods: Cytotoxic activities against the human CCA cells CL-6 of the dual (BE:AT, BE:HS, and AT:HS) and triple (BE:AT:HS) combinations were evaluated using MTT assay. The cytotoxic interaction of each dual combination was assessed at five concentration ratios (10:0, 7:3, 5:5, 3:7, and 0:10) using isobologram analysis. For triple combination, the concentration ratio used in the experiment was 1:1.5:2.5 (BE:AT:HS) and analysis of the interaction was performed using polygonogram analysis at the concentrations that inhibit cell growth by 50% and 90%, respectively.
Results: The BE:AT combination produced the additive effect with sum fractional inhibitory concentration of 0.967±0.02 (mean ± SD). The BE:HS and AT:HS combinations produced a synergistic effect with sum fractional inhibitory concentrations of 0.685±0.08 and 0.767±0.09, respectively. The mixture of the three compounds produced synergistic interaction with combination index values of 0.519±0.10 and 0.65±0.17 (mean ± SD) at the concentrations that inhibit cell growth at the 50% and 90% leveled, respectively.
Conclusion: Results obtained would guide further development of Atractylodes lancea (Thunb.) DC. as potential anti-CCA chemotherapeutics concerning the appropriate pharmaceutical dosage form.

Keywords: Atractylodes lancea, β-eudesmol, atractylodin, hinesol, cholangiocarcinoma, cytotoxicity

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