Objective: To screen genes which may associate with the development and malignant transformation of hydatidiform mole.
Method: The differentially expressed genes were analyzed between the tissues of two cases of hydatidiform mole and the normal placental tissues of two cases of pregnancy which had almost the same pregnant ages as hydatidiform mole, using cDNA chips containing 4,096 genes.
Results: There were total 89 genes significantly differently expressed in all hydatidiform moles, counting for 2.2% of total genes. Compared with normal villi, 24 genes in hydatidiform mole were up-regulated and 65 genes were down-regulated. Bioinformatical analysis of genes showed genes associated with cell proliferative inhibition, such as Ras GTPase activating protein, TGF-beta IIR alpha, BTG2 were significantly down-regulated, whereas genes associated with cell proliferation, malignant transformation and tumor metastasis as thymidine kinase, ribonucleotide reductase, glucose transport protein were highly up-regulated.
Conclusion: cDNA chip technique is one kind of very effective methods in screening associated genes in hydatidiform mole.
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