Pacing a small cage: mutation and RNA viruses.

Pacing a small cage: mutation and RNA viruses.
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DOI:
10.1016/j.tree.2007.11.010
复制
发表时间:
2008-04
影响因子:
16.8
通讯作者:
Pybus OG
Pybus OG
中科院分区:
生物学1区
文献类型:
--
作者:
Belshaw R;Gardner A;Rambaut A;Pybus OG

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RNA病毒具有极高的突变率,我们认为对此最合理的解释是与复制速度的权衡。我们认为,研究进一步增加这种突变率人工抗病毒治疗需要理论上的重新评估,特别是涉及到所谓的错误阈值。高突变率的主要进化结果似乎是将RNA病毒限制在一个小的基因组中;因此它们迅速利用有限的可能性。研究这种对它们进化的限制,以及如何偶尔克服它,有望取得丰硕成果。我们解释了许多用于研究RNA病毒进化的术语,并强调了需要做的具体实验和比较工作。
RNA viruses have an extremely high mutation rate, and we argue that the most plausible explanation for this is a trade-off with replication speed. We suggest that research into further increasing this mutation rate artificially as an antiviral treatment requires a theoretical reevaluation, especially relating to the so-called error threshold. The main evolutionary consequence of a high mutation rate appears to have been to restrict RNA viruses to a small genome; they thus rapidly exploit a limited array of possibilities. Investigating this constraint to their evolution, and how it is occasionally overcome, promises to be fruitful. We explain the many terms used in investigating RNA viral evolution and highlight the specific experimental and comparative work that needs to be done.
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