The effect of some purine deoxyribosides on the incorporation of [14C]formate and [32P]orthophosphate into DNA of ascites tumor cells in vitro

Lorna Langer , Hans Klenow
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引用次数: 29

Abstract

It has been found that under various experimental conditions deoxyadenosine, but not deoxyguanosine or deoxyinosine, causes pronounced and consistent inhibition of the incorporation of the carbon of formate into DNA-TMP of Ehrlich ascites tumor cell in vitro. This effect could be reversed by simultaneous addition of deoxyguanosine. Deoxyguanosine was found to have the same action in experiments on the incorporation of [32P]labeled orthophosphate into DNA.

Experiments with [14C]formate did not show any consistent inhibitory effect of deoxyadenosine on the labelling of DNA-TMP in Yoshida ascites tumor cells.

一些嘌呤脱氧核苷对体外腹水肿瘤细胞[14C]甲酸盐和[32P]正磷酸盐并入DNA的影响
研究发现,在不同的实验条件下,脱氧腺苷,而不是脱氧鸟苷或脱氧肌苷,在体外对埃利希腹水肿瘤细胞DNA-TMP中甲酸碳的结合有明显且一致的抑制作用。这种效应可以通过同时加入脱氧鸟苷来逆转。脱氧鸟苷在将[32P]标记的正磷酸盐掺入DNA的实验中发现具有相同的作用。用甲酸[14C]进行的实验没有显示脱氧腺苷对吉田腹水肿瘤细胞DNA-TMP标记的一致抑制作用。
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