DNA methylation of human choline kinase alpha gene

Siti Aisyah Faten Mohamed Sa'dom, and Nur Farah Hani Azemi, and Mohammad Shahrizal Mohammad Umar, and Yoke, Hiang Yee and Wei, Cun See Too and Ling, Ling Few (2020) DNA methylation of human choline kinase alpha gene. Sains Malaysiana, 49 (1). pp. 161-168. ISSN 0126-6039


Official URL: http://www.ukm.my/jsm/malay_journals/jilid49bil1_2...


Increased level of choline kinase (CK) is a common feature in cancers and inhibition of this enzyme has been applied as anticancer strategy. DNA methylation of gene promoter especially at CpG island is associated with suppression of gene expression. Despite the importance of CK especially the alpha isoform in cancer pathogenesis, epigenetic regulation of ckα expression has not been investigated. Hence, this study aimed to determine the effect of DNA methylation on ckα promoter activity and gene expression by using hypomethylating (5-aza) and methylating (budesonide) agents. The level of DNA methylation in the second CpG island of ckα promoter was determined by PCR-based method. 5-aza and budesonide increased the methylation of the selected CpG island compared to untreated control. Treatment with the drugs produced opposite effect, with 5-aza induced ckα promoter activity and gene expression while budesonide suppressed the promoter activity and mRNA level of this gene. Deletion of a region containing the second CpG island on ckα promoter resulted in significantly lower promoter activity. In conclusion, this study showed that DNA methylation could be one of the mechanisms that regulate the expression of ckα gene.

Item Type:Article
Keywords:Choline kinase; DNA methylation; Epigenetics; Gene expression
Journal:Sains Malaysiana
ID Code:14747
Deposited By: ms aida -
Deposited On:11 Jun 2020 07:59
Last Modified:17 Jun 2020 08:14

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