Volume 10, Issue 1 (1-2020)                   Iran J Ped Hematol Oncol 2020, 10(1): 28-37 | Back to browse issues page


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Rostamian T, Pourrajab F, Hekmatimoghaddam S. The Effect of 6-Thioguanine on Proliferation, Viability and Expression of the Genes DNMT 3A, DNMT 3B and HDAC3 in Lymphoid Cancer Cell Line Nalm6. Iran J Ped Hematol Oncol 2020; 10 (1) :28-37
URL: http://ijpho.ssu.ac.ir/article-1-512-en.html
Hematology & Oncology Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
Abstract:   (1689 Views)
Background: 6-thioguanine (6-TG) is one of the thiopurine drugs with successful use in oncology, especially for acute lymphoblastic leukemia (ALL). 6-TG is proposed to act as an epigenetic drug affecting DNA methylation. The aim of this study was to clarify the effect of 6-TG on the proliferation, viability and expression of genes coding for the enzymes DNA methyltransferase 3A and DNA methyltransferase 3B (DNMTs) as well as histone deacetylase 3 (HDAC3) in the human B cell-ALL cell line Nalm6.
Materials and Methods: In this experimental study, Nalm6 cells and also normal peripheral blood mononuclear cells (PBMCs) were grown in RPMI 1640 medium containing 10% fetal bovine serum. They were then treated with 6-TG at their exponential growth phase. Cell viability was monitored using the Cell Counting Kit-8 assay with an enzyme-linked immunosorbent assay (ELISA) reader. The expressions of the above-mentioned 3 genes were quantified using real-time PCR.
Results: 6-TG could inhibit the proliferation of Nalm6 cells and decrease their viability. In Nalm6 cells, as compared to normal PBMCs, 6-TG significantly decreased HDAC3 (p = 0.008) as well as DNMT3B (p = 0.003) gene expressions, but increased the expression of DNMT3A gene (p = 0.02) after normalization to GAPDH, as the housekeeping gene.
Conclusion: These findings suggested that the altered expression of DNMT3A, DNMT3B and HDAC3 genes was responsible for at least part of the antitumoral properties of 6-TG, providing an insight into mechanism of its action as an epigenetic drug.
 
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Type of Study: Research | Subject: Heart
Received: 2019/05/20 | Accepted: 2019/12/1 | Published: 2020/01/6

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