DNA methylation is a process by which methyl groups are added to cytosine or adenine. DNA methylation can change the activity of the DNA molecule without changing the sequence. Methylation of 5-methylcytosine (5mC) is widespread in both eukaryotes and prokaryotes, and it is a very important epigenetic modification event, which can regulate gene activity and influence a number of key processes such as genomic imprinting, cell differentiation, transcriptional regulation, and chromatin remodeling[2]. 5-Methylcytosine binding domain (MBD) family proteins are essential readers of DNA methylation[3].Proteins containing a methyl-CpG-binding domain (MBD) bind 5mC and convert the methylation pattern information into appropriate functional cellular states. The correct readout of epigenetic marks is of particular importance in the nervous system where abnormal expression or compromised MBD protein function, can lead to disease and developmental disorders[4]. The methylcytosine-binding domain 2 (MBD2) protein recruits the nucleosome remodeling and deacetylase complex (NuRD) to methylated DNA to modify chromatin and regulate transcription. Importantly, MBD2 functions within CpG islands that contain 100s to 1000s of potential binding sites. Since NuRD physically rearranges nucleosomes, the dynamic mobility of this complex is directly related to function[5]. KCC-07 is a selective, potent and brain-penetrant inhibitor of methyl-CpG-binding domain protein 2(MBD2) with anticancer activity. KCC-07 prevents binding of MBD2 to methylated DNA and activates brain specific angiogenesis inhibitor 1 (BAI1) inducing anti-proliferative BAI1/p53/p21 signaling. In vitro, KCC-07 treatment Medulloblastomas (MB) cells clearly inhibited MB cell growth, consistent with induction of anti-proliferative BAI1/p53/p21 signaling[6].
搜索
