title: Association between the methylation status of theMGMTpromoter in bone marrow specimens and chemotherapy outcomes of patients with acute myeloid leukemia.
abstract: TheO(6)-methylguanine-DNA methyltransferase (MGMT) gene is a tumor suppressor gene that is associated with the risk of developing acute myeloid leukemia (AML). However, the association between the methylation status of theMGMTpromoter and the chemotherapeutic outcomes of patients with AML remains unknown. In the present study, 30 bone marrow samples derived from patients with AML were collected prior and subsequent to chemotherapy. The methylation status of the MGMT promoter in the bone marrow specimens was determined by methylation-specific polymerase chain reaction. The results indicated that the methylation status of the MGMT promoter was influenced by different chemotherapeutic regimens. The MGMT methylation status of M4 patients (3 out of 6) were more chemosensitive, compared with that of patients with other AML subtypes (M1, 1 out of 3; M2, 0 out of 8; M3, 3 out of 7; M5, 0 out of 3; and M6, 1 out of 3). Age-based analysis revealed that the group aged ≤60 years (7 out of 24 patients) exhibited more methylation changes than patients aged >60 years (1 out of 6). Male patients (4 out of 13) were more susceptible to chemotherapy-induced methylation changes than female patients (4 out of 17). Thus, the methylation status of the MGMT promoter may serve as a potential biomarker to predict the therapeutic outcomes in male AML patients. However, further studies in larger sample sets are required to confirm the present findings.
authors.affiliation: Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China.
authors.forename: Qingxiao
authors.initials: Q
authors.lastname: Hong
authors.affiliation: Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China.
authors.forename: Xiaoying
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China.
authors.forename: Huadan
authors.initials: H
authors.lastname: Ye
authors.affiliation: Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China.
authors.forename: Annan
authors.initials: A
authors.lastname: Zhou
authors.affiliation: Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China.
authors.forename: Yuting
authors.initials: Y
authors.lastname: Gao
authors.affiliation: Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China.
authors.forename: Danjie
authors.initials: D
authors.lastname: Jiang
authors.affiliation: Department of Hematology, Yuyao People's Hospital, Yuyao, Zhejiang 315400, P.R. China.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Wu
authors.affiliation: Department of Hematology, Yuyao People's Hospital, Yuyao, Zhejiang 315400, P.R. China.
authors.forename: Bingru
authors.initials: B
authors.lastname: Tian
authors.affiliation: Department of Hematology, Yuyao People's Hospital, Yuyao, Zhejiang 315400, P.R. China.
authors.forename: Youfen
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Department of Hematology, Yuyao People's Hospital, Yuyao, Zhejiang 315400, P.R. China.
authors.forename: Ming
authors.initials: M
authors.lastname: Wang
authors.affiliation: Department of Hematology, Yuyao People's Hospital, Yuyao, Zhejiang 315400, P.R. China.
authors.forename: Jiping
authors.initials: J
authors.lastname: Xie
authors.affiliation: Department of Hematology, Yuyao People's Hospital, Yuyao, Zhejiang 315400, P.R. China.
authors.forename: Yongming
authors.initials: Y
authors.lastname: Xia
authors.affiliation: Department of Biochemistry and Molecular Biology, Zhejiang Provincial Key Laboratory of Pathophysiology, School of Medicine, Ningbo University, Ningbo, Zhejiang 315211, P.R. China.
authors.forename: Shiwei
authors.initials: S
authors.lastname: Duan
keywords: MGMT; acute myeloid leukemia; chemotherapy; methylation; promoter