Expression of wild-type p53 is not compatible with continued growth of p53-negative tumor cells

Expression of wild-type p53 is not compatible with continued growth of p53-negative tumor cells
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野生型 p53 的表达与 p53 阴性肿瘤细胞的持续生长不相容

DOI:
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发表时间:
1991
影响因子:
5.3
通讯作者:
S. Benchimol
S. Benchimol
中科院分区:
生物学2区
文献类型:
--
作者:
P. Johnson;D. Gray;M. Mowat;S. Benchimol

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Inactivation of the cellular p53 gene is a common feature of Friend virus-induced murine erythroleukemia cell lines and may represent a necessary step in the progression of this disease. As well, frequent loss or mutation of p53 alleles in diverse human tumors is consistent with the view of p53 as a tumor suppressor gene. To examine the significance of p53 gene inactivation in tumorigenesis, we have attempted to express transfected wild-type p53 in three p53-negative tumor cell lines: murine DP16-1 Friend erythroleukemia cells, human K562 cells, and SKOV-3 cells. We found that aberrant p53 proteins, which differ from wild-type p53 by a single amino acid substitution, were expressed stably in these cells, whereas wild-type p53 expression was not tolerated. The inability of p53-negative tumor cell lines to support long-term expression of wild-type p53 protein is consistent with the view that p53 is a tumor suppressor gene.
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