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Pharm Sci. 2020;26(2): 159-164.
doi: 10.34172/PS.2020.3
  Abstract View: 95
  PDF Download: 58

Research Article

The Sensitization of Melatonin in Osteosarcoma Cells by Suppression of Anti-Apoptotic Proteins

Seyed Mostafa Mir 1,2,3 ORCID logo, Bahman Yousefi 4 * , Abdoljalal Marjani 5, Mahdi Rahimi 4, Durdi Qujeq 1,2,3 * ORCID logo

1 Cellular and Molecular Biology Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, Iran.
2 Department of Clinical Biochemistry, Babol University of Medical Sciences, Babol, Iran.
3 Student Research Committee, Babol University of Medical Sciences, Babol, Iran.
4 Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
5 Metabolic Disorders Research Center, Department of Biochemistry and Biophysics, Gorgan Faculty of Medicine, Golestan University of Medical Sciences, Gorgan, Iran.

Abstract

Background: Investigation of anti-cancer agents with desirable selective toxicity is critical for cancer therapy. The use of natural adjuvants can be a promising option in reducing the toxicity of the anti-cancer agent. The aim of this study was to investigate the potential application of melatonin (MLT) as a natural adjuvant molecule along with doxorubicin (DOX) to induce cytotoxicity in osteosarcoma (OS) cells.
Methods: Human OS cell lines included Saos-2, MG-63, and Human Bone Marrow Mesenchymal Stem Cells (hBM-MSCs) were treated with free DOX, free MLT, DOX-loaded NPs (DOX-NPs), MLT-loaded NPs (MLT-NPs), combination of DOX and MLT (DOX-MLT) and combination of DOX and MLT-loaded NPs (DOX-MLT-NPs) in separated cell culture. Cell proliferation of experiments were evaluated by MTT assay after 24 h. Total protein levels were determined by enzyme immunoassay ELISA.
Results: Herein, we found the combination of MLT with DOX, especially formulated in nano-form, is resulted in a significant reduction in the protein levels of both X-linked Inhibitor of Apoptosis (XIAP) and Survivin (p<0.0001). Indeed, there was a significant decrease in the expression of XIAP and Survivin when MLT is combined with DOX compared to the individual treatments.
Conclusion: Our findings indicated the synergism of the antitumor effect could be due to the down-regulation of XIAP and Survivin in the levels of protein.

Keywords: Melatonin, Doxorubicin, Osteosarcoma, Combination therapy
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Submitted: 02 Sep 2019
Accepted: 06 Dec 2019
ePublished: 27 Jun 2020
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