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[Expression of the CDH13 gene and BCR/ABL fusion gene in chronic myeloid leukemia patients and their relationship].

OBJECTIVE
To investigate the expression of the CDH13 gene and BCR/ABL fusion gene in chronic myeloid leukemia(CML) patients at different stages and explore their relationship.


METHODS
RNA was isolated from peripheral blood in 30 healthy adults, 22 primary CML patients and 25 blastic crisis of CML patients. We examined the expression of the CDH13 gene and BCR/ABL fusion gene using EVA Green real-time reverse transcriptase-polymerase chain reaction (RT-PCR).


RESULTS
The expression of the BCR/ABL fusion gene in the patients with blastic crisis CML was 4.72 folds as that of the patients with primary CML. The expression of the CDH13 gene in the primary and blastic crisis CML patients was significantly reduced to 36% and 25% of that in healthy controls, respectively. Moreover, negative correlation was found between the expressions of these two genes.


CONCLUSION
The study showed that the reduction of the CDH13 expression at different clinical stage of CML may account for the defective cell adhesion in CML, and the expression of the CDH13 gene was probably down-regulated by the BCR/ABL fusion gene.