DING Xiao-yan,WANG Hong-zhi,ZHANG Ying,et al.Effect of Main Component of Realgar Arsenic Disulfide (As2S2) on DNA Methylation of SKM-1 Cells with Myelodysplastic Syndrome[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(09):66-71.
DING Xiao-yan,WANG Hong-zhi,ZHANG Ying,et al.Effect of Main Component of Realgar Arsenic Disulfide (As2S2) on DNA Methylation of SKM-1 Cells with Myelodysplastic Syndrome[J].Chinese Journal of Experimental Traditional Medical Formulae,2022,28(09):66-71. DOI: 10.13422/j.cnki.syfjx.202201002.
Effect of Main Component of Realgar Arsenic Disulfide (As2S2) on DNA Methylation of SKM-1 Cells with Myelodysplastic Syndrome
To explore the effects of the main component of Realgar arsenic disulfide (As
2
S
2
) on DNA methylation of SKM-1 cells with myelodysplastic syndrome.
Method
2
Cell Counting Kit-8 (CCK-8) was used to detect the inhibitory effect of As
2
S
2
(0, 1, 2, 4, 8, 16 μmol·L
-1
)on SKM-1 cells. Propidium iodide (PI) staining was applied to detect the effect of As
2
S
2
(0, 1, 2, 4 μmol·L
-1
)on the SKM-1 cell cycle. The effect of As
2
S
2
(0, 4 μmol·L
-1
) on the methylation of SKM-1 cells on a genome-wide scale was observed by using Human Methylation 850K BeadChip, followed by Kyoto Encyclopedia of Genes and Genomes (KEGG) and gene ontology (GO) analyses. According to the microarray data, the antioncogene TUSC3 was selected, and real-time quantitative polymerase chain reaction (Real-time PCR) and Western blot were adopted to investigate the effect of As
2
S
2
(0, 1, 2, 4 μmol·L
-1
) on the mRNA and protein expression of TUSC3, respectively.
Result
2
Compared with the conditions in the blank group, As
2
S
2
inhibited SKM-1 cells, increased the proportion of cells in the G
0
/G
1
phase, and decreased the proportion of cells in the S phase(
P
<
0.05). The 850K microarray showed that 4 μmol·L
-1
As
2
S
2
could significantly induce DNA methylation in SKM-1 cells, with 12 710 differentially methylated genes involved (50% hypermethylated and 50% hypomethylated genes). KEGG and GO analyses showed that differentially methylated genes were involved in many important biological functions and signaling pathways, including purine metabolism, natural killer cell-mediated cytotoxicity, endocytosis, chemokine signaling pathway, and nuclear ubiquitin ligase complex. In terms of downstream gene expression, Real-time PCR and Western blot showed that As
2
S
2
increased the expression of TUSC3, as compared with the conditions in the blank group (
P
<
0.05).
Conclusion
2
As
2
S
2
, the main component of Realgar, has a significant regulatory effect on the methylation of SKM-1 cells, which is presumedly achieved by increasing the expression of TUSC3.
关键词
Keywords
references
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