Potential contributions of antimutator activity to the metastasis suppressor function of NM23-H1.

Potential contributions of antimutator activity to the metastasis suppressor function of NM23-H1.
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DOI:
10.1007/s11010-009-0108-3
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发表时间:
2009-09
影响因子:
4.3
通讯作者:
Jarrett, Stuart G.
Jarrett, Stuart G.
中科院分区:
生物学3区
文献类型:
--
作者:
Kaetzel, David M.;McCorkle, Joseph R.;Novak, Marian;Yang, Mengmeng;Jarrett, Stuart G.

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Nm23-H1是一个已知的肿瘤转移抑制基因,其作用机制(S)尚未完全阐明。这份报告的目的是讨论最近在我们实验室发现的一种新的3‘-5’外切酶活性的潜在作用的研究进展,这是一种通常与DNA修复和复制有关的生化功能。我们采用定点突变的方法证明了NM23-H1的3‘-5’外切酶活性是其转移抑制功能所必需的。除了在DNA修复中发挥作用外,我们还观察到单一酵母NM23同源物(YNK1)是维持基因组完整性和正常的DNA修复动力学所必需的。这些结果及其对理解癌症中潜在的NM23-H1功能的分子机制的意义进行了讨论。
nm23-h1 is a well-documented metastasis suppressor gene whose mechanism(s) of action have yet to be fully elucidated. The purpose of this report is to discuss recent advances in investigating the potential role of a novel 3′–5′ exonuclease activity identified recently in our laboratory, a biochemical function associated, in general, with DNA repair and replication. We have employed a site-directed mutagenesis approach to demonstrate that the 3′–5′ exonuclease activity of NM23-H1 is required for its metastasis suppressor function. Consistent with a role in DNA repair, we also observe that the single yeast NM23 homolog (YNK1) is required for the maintenance of genomic integrity and normal kinetics of DNA repair in response to exposure to ultraviolet radiation. These results and their implications for understanding the molecular mechanisms underlying NM23-H1 functions in cancer are discussed.
DOI: 10.1093/jnci/80.5.318
发表时间: 1988-05-04
影响因子: 10.3
作者:
CHADWICK, DE;LAGARDE, AE
通讯作者: LAGARDE, AE
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