Scientific publications

Repetitive DNA hypomethylation in the advanced phase of chronic myeloid leukemia

Roman-Gomez J, Jimenez-Velasco A, Agirre X, Castillejo JA, Navarro G, San Jose-Eneriz E, Garate L, Cordeu L, Cervantes F, Prosper F, Heiniger A, Torres A.
Hematology Department, Reina Sofia Hospital, Avda. Menendez Pidal s/n, 14004 Cordoba, Spain.

Magazine: Leukemia Research

Date: Mar 1, 2008

Cell Therapy Area [SP]

Repetitive elements are heavily methylated in normal tissues, but hypomethylated in malignant tissues, driving the global genomic hypomethylation found in cancer.

This hypomethylation results in chromosomal instability, a well-characterized feature of the advanced phases of chronic myeloid leukemia (CML). We investigated methylation changes of DNA repetitive elements (LINE1, Alu, Satellite-alpha and Satellite-2) during the progression of CML from chronic phase (CP) to blast crisis (BC). CP-CML samples were significantly more hypomethylated for all repetitive sequences compared with normal samples. Furthermore, a more profound level of hypomethylation was observed among BC samples compared with CP samples.

Our data suggest that repetitive DNA hypomethylation are closely associated with CML progression.

CITATION  Leuk Res. 2008 Mar;32(3):487-90

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