The present study investigated the methylation status of the SHP1 gene in CML, and examined the association between DNMT1 and EZH2 activity and the SHP1 gene methylation status to develop novel strategies for the treatment of CML.
In conclusion, the hypermethylation of C22orf2 and BCL2-like11 promoters proceeding from DNMT1 is a crucial component of their reduced expression, but it is not directly involved in CML resistance to IM.
To determine the roles of DNMT3A, DNMT3B, as well as DNMT1, in the development of leukemia, competitive polymerase chain reaction (PCR) assays were performed and the expression levels of DNMTs were measured in normal hematopoiesis, 33 cases of acute myelogenous leukemia (AML), and 17 cases of chronic myelogenous leukemia (CML).