Methylation of CpG sites in BCL2 major breakpoint region and the increase of BCL2/JH translocation with aging.

ABSTRACT: The BCL2 breakage mechanism has been shown to be highly dependent on DNA methylation at the major breakpoint region (MBR) CpG sites. We recently described an increased frequency of BCL2/ JH translocation with aging. It is known that methylation levels change with aging. The present study aimed to determine whether methylation alterations at CpG sites of BCL2 MBR were the cause of increased breakages with aging. We analyzed the methylation levels of three CpG sites on the region by pyrosequencing and studied if methylation levels and/or polymorphisms affecting CpG sites were associated with an increase of translocations. We observed that although the methylation levels of MBR CpG sites were higher in individuals with BCL2/JH translocation, in contrast to our expectations, these levels decre

SUBMITTER: Martin-Guerrero I 

PROVIDER: S-EPMC5005837 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature