Synthetic genetic polymers capable of heredity and evolution.
Synthetic genetic polymers capable of heredity and evolution.
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DOI:
10.1126/science.1217622
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发表时间:
2012-04-20
期刊:
影响因子:
--
通讯作者:
Holliger P
中科院分区:
文献类型:
--
作者:
Pinheiro VB;Taylor AI;Cozens C;Abramov M;Renders M;Zhang S;Chaput JC;Wengel J;Peak-Chew SY;McLaughlin SH;Herdewijn P;Holliger P
Genetic information storage and processing rely on just two polymers, DNA and RNA. Whether their role reflects evolutionary history or fundamental functional constraints is unknown. Using polymerase evolution and design, we show that genetic information can be stored in and recovered from six alternative genetic polymers (XNAs) based on simple nucleic acid architectures not found in nature. We also select XNA aptamers, which bind their targets with high affinity and specificity, demonstrating that beyond heredity, specific XNAs have the capacity for Darwinian evolution and for folding into defined structures. Thus, heredity and evolution, two hallmarks of life, are not limited to DNA and RNA but are likely to be emergent properties of polymers capable of information storage.
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