Journal
GENETICS AND MOLECULAR BIOLOGY
Volume 31, Issue 3, Pages 632-638Publisher
SOC BRASIL GENETICA
DOI: 10.1590/S1415-47572008000400005
Keywords
CpG island; DNA methylation; CDKN2B
Funding
- Brazilian agencies FAPESP
- CNPq
- Center for Cell-based Therapy
- UESB
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The aim of this work was to evaluate the methylation profile of the p15 (CDKN2B) gene in Brazilian patients with leukemia and to correlate the CDKN2B gene expression with the percentage of methylated CpG dinucleotides in its promoter region. Thirty-one samples from six patients with acute lymphocytic leukemia (ALL), four with chronic myeloid leukemia (CML), and 21 with acute myeloid leukemia (AML) were evaluated by MSP (Methylation-Specific PCR). The CDKN2B gene was found to be methylated in four (67%) of the six ALL samples and in 16 (76%) of the 21 AML samples, but in none of the four CML samples analyzed. We observed a correlation between the CDKN2B mRNA expression (RT-PCR) and the percentage of methylated CpG dinucleotides. Therefore, this study in Brazilian patients confirms that the CDKN2B gene is methylated in the majority of leukemia patients.
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