Impact of chromosomal rearrangement upon DNA methylation patterns in leukemia

Autor: Byun Hyang-Min, Eshaghian Shahrooz, Douer Dan, Trent Jonathen, Garcia-Manero Guillermo, Bhatia Ravi, Siegmund Kim, Yang Allen S.
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: Open Medicine, Vol 12, Iss 1, Pp 76-85 (2017)
Druh dokumentu: article
ISSN: 2391-5463
DOI: 10.1515/med-2017-0014
Popis: Genomic instability, including genetic mutations and chromosomal rearrangements, can lead to cancer development. Aberrant DNA methylation occurs commonly in cancer cells. The aim of this study is to determine the effects of a specific chromosomal lesion the BCR-ABL translocation t(9:22), in establishing DNA methylation profiles in cancer. Materials and methods We compared DNA methylation of 1,505 selected promoter CpGs in chronic myelogenous leukemia (CML), acute lymphoblastic leukemia (ALL) with and without the Philadelphia chromosome t(9:22), CD34+ hematopoietic stem cells transfected with BCR-ABL, and other tumors without BCR-ABL (acute promyelocytic leukemia (APL) and gastrointestinal stromal tumors (GIST). In this study, the DNA methylation profile of CML was more closely related to APL, another myeloid leukemia, than Ph+ ALL. Although DNA methylation profiles were consistent within a specific tumor type, overall DNA methylation profiles were no influenced by BCR-ABL gene translocation in the cancers and tissues studied. We conclude that DNA methylation profiles may reflect the cell of origin in cancers rather than the chromosomal lesions involved in leukemogenesis.
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