Procainamide inhibits DNA methyltransferase in a human T cell line.

Procainamide inhibits DNA methyltransferase in a human T cell line.
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发表时间:
1991-04
期刊:
The Journal of rheumatology
影响因子:
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通讯作者:
L. Scheinbart;Marcia A. Johnson;Laura A. Gross;S. Edelstein;B. Richardson
L. Scheinbart;Marcia A. Johnson;Laura A. Gross;S. Edelstein;B. Richardson
中科院分区:
其他
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作者:
L. Scheinbart;Marcia A. Johnson;Laura A. Gross;S. Edelstein;B. Richardson

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普鲁卡因酰胺是一种广泛使用的抗心律失常药,可导致人类 T 细胞系 Jurkat 中 DNA 低甲基化,但其机制尚不清楚。我们报道普鲁卡因酰胺抑制 DNA 甲基转移酶催化的甲基从 S-腺苷甲硫氨酸转移到 DNA,但对其他已知的 DNA 甲基化调节剂没有影响。我们的结果表明普鲁卡因酰胺可以通过抑制 DNA 甲基转移酶活性来抑制细胞 DNA 甲基化。
Procainamide, a widely used antiarrythmic, causes DNA hypomethylation in the human T cell line Jurkat, but the mechanism is unknown. We report that procainamide inhibits the DNA methyltransferase catalyzed transfer of methyl groups from S-adenosylmethionine to DNA, but has no effect on other known regulators of DNA methylation. Our results suggest that procainamide could inhibit cellular DNA methylation by inhibiting DNA methyltransferase activity.