Volume 10, Issue 3 (Vol.10 No.3 Oct 2021)                   rbmb.net 2021, 10(3): 455-461 | Back to browse issues page


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Alizadeh M, Nafari A, Safarzadeh A, Veiskarami S, Almasian M, Kiani A A. The Impact of EGCG and RG108 on SOCS1 Promoter DNA Methylation and Expression in U937 Leukemia Cells. rbmb.net. 2021; 10 (3) :455-461
URL: http://rbmb.net/article-1-702-en.html
Department of Medical Laboratory Sciences, School of Allied Medical Sciences, Lorestan University of Medical Sciences, Khorramabad, Iran
Abstract:   (385 Views)
Background: The available evidence has increasingly demonstrated that a combination of genetic and epigenetic factors, such as DNA methylation, could be considered as causing leukemia. Epigenetic changes and methylation of the suppressor of the cytokine signaling 1 promoter (SOCS1) CpG region silence SOCS1 expression in cancer. In the current study, we evaluated the impact of epigallocatechin gallate (EGCG) and RG108 on SOCS1 promoter methylation and expression in U937 cells.

Methods: In the current study, U937 leukemic cells were treated with EGCG and RG108 for 12, 24, 48, and 72 h and SOCS1 promoter methylation and its expression were measured by methylationspecific PCR (MSP) and quantitative real-time PCR, respectively. 

Results: The outcomes indicated that the SOCS1 promoter is methylated in U937 cells, and treatment of these cells with either EGCG or RG108 reduced its methylation. Moreover, we observed that SOCS1 expression was significantly upregulated in a time-dependent manner by both EGCG and RG108 in U937
cells compared with control cells. In the RG108-treated group at 12, 24, 48, and 72 h, SOCS1 expression was upregulated by 1, 4.2, 16.6, and 32.6 -fold respectively, and in the EGCG-treated group, by 0.5, 3.2, 10.8, and 22.3 -fold, respectively.

Conclusions: Treatment with either EGCG or RG108 reduced SOCS1 promoter methylation and increased SOCS1 expression in U937 cells in a time-dependent manner, which may play a role in leukemia therapy.
 
Full-Text [PDF 286 kb]   (187 Downloads)    
Type of Article: Original Article | Subject: Cell Biology
Received: 2021/05/9 | Accepted: 2021/07/15 | Published: 2021/12/5

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