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选择性杀死转化的幼仓鼠肾(BHK)细胞。

Selective killing of transformed baby hamster kidney (BHK) cells.

作者信息

Pardee A B, James L J

出版信息

Proc Natl Acad Sci U S A. 1975 Dec;72(12):4994-8. doi: 10.1073/pnas.72.12.4994.

Abstract

We report here that certain drugs can protect Syrian baby hamster kidney cells (BHK) in culture against the lethal agents cytosine arabinonucleoside, hydroxyurea, and colcemid. Polyoma virus-transformed BHK cells (PyBHK) are killed under the same conditions. The protective drugs include caffeine and streptovitacin A. Kinetic studies show that these drugs act specifically in G1, and that they shift BHK cells from G1 into the G0 state at the restriction point, similar to the effects of high cell density or serum deprivation. These drugs do not block the growth of PyBHK cells nearly as effectively, consistent with a reduced effectiveness of restriction point control in virus-transformed cells. Consequently, the transformed cells around their cycle and are killed by the cell cycle phase-specific toxic agents, in contrast to the arrested BHK cells. These findings provide a model for studies on differential killing of tumor versus normal cells in vivo.

摘要

我们在此报告,某些药物可在培养中保护叙利亚幼仓鼠肾细胞(BHK)免受致死剂阿糖胞苷、羟基脲和秋水仙酰胺的影响。多瘤病毒转化的BHK细胞(PyBHK)在相同条件下会被杀死。具有保护作用的药物包括咖啡因和链霉抗生物素蛋白A。动力学研究表明,这些药物在G1期具有特异性作用,并且它们在限制点将BHK细胞从G1期转变为G0期,这与高细胞密度或血清剥夺的作用相似。这些药物对PyBHK细胞生长的阻断效果远不如对BHK细胞,这与病毒转化细胞中限制点控制的有效性降低一致。因此,与停滞的BHK细胞不同,转化细胞在其细胞周期中循环,并被细胞周期阶段特异性毒性剂杀死。这些发现为体内肿瘤细胞与正常细胞差异杀伤的研究提供了一个模型。

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