Cell death in genome evolution.

Cell death in genome evolution.
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基因组进化中的细胞死亡。

DOI:
10.1016/j.semcdb.2015.02.014
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发表时间:
2015-03
影响因子:
7.3
通讯作者:
Hardwick, J. Marie
Hardwick, J. Marie
中科院分区:
生物学2区
文献类型:
--
作者:
Teng, Xinchen;Hardwick, J. Marie

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异常细胞的不适当存活是肿瘤发生的基础。大多数关于程序性细胞死亡的发现都来自于对模式生物的研究。重新审视激发这些发现的实验背景有助于解释这些发现不可避免地伴随的混淆偏见。修正早期的偏见为细胞死亡模型的收集增加了一个新成员。对酵母中基因依赖性死亡的分析揭示了单个基因突变对随后的真核基因组进化的惊人影响。类似的事件可能会影响早期肿瘤发生过程中突变的选择。早期随机突变可能会驱动癌症驱动突变的选择,这种可能性是可以想象的,但很难证明。这在酵母中进行了测试,揭示了几乎任何基因的突变似乎都指定了新的第二次突变的选择。一些人类肿瘤含有与酵母中共同发生的突变基因同源的突变基因对。在这里,我们考虑如何酵母再次提供新的见解肿瘤发生。
Inappropriate survival of abnormal cells underlies tumorigenesis. Most discoveries about programmed cell death have come from studying model organisms. Revisiting the experimental contexts that inspired these discoveries helps explain confounding biases that inevitably accompany such discoveries. Amending early biases has added a newcomer to the collection of cell death models. Analysis of gene-dependent death in yeast revealed the surprising influence of single gene mutations on subsequent eukaryotic genome evolution. Similar events may influence the selection for mutations during early tumorigenesis. The possibility that an early random mutation might drive the selection for a cancer driver mutation is conceivable but difficult to demonstrate. This was tested in yeast, revealing that mutation of almost any gene appears to specify the selection for a new second mutation. Some human tumors contain pairs of mutant genes homologous to co-occurring mutant genes in yeast. Here we consider how yeast again provide novel insights into tumorigenesis.
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