Molecular breeding of polymerases for amplification of ancient DNA.
Molecular breeding of polymerases for amplification of ancient DNA.
复制标题
聚合酶的分子育种,用于扩增古代DNA。
DOI:
10.1038/nbt1321
复制
发表时间:
2007-08
影响因子:
46.9
通讯作者:
Holliger, Philipp
中科院分区:
文献类型:
--
作者:
d'Abbadie, Marc;Hofreiter, Michael;Vaisman, Alexandra;Loakes, David;Gasparutto, Didier;Cadet, Jean;Woodgate, Roger;Paeaebo, Svante;Holliger, Philipp
In the absence of repair, lesions accumulate in DNA. Thus, DNA persisting in specimens of paleontological, archaeological or forensic interest is inevitably damaged. We describe a strategy for the recovery of genetic information from damaged DNA. By molecular breeding of polymerase genes from the genusThermus(Taq(Thermus aquaticus),Tth(Thermus thermophilus) andTfl(Thermus flavus)) and compartmentalized self-replication,selection, we have evolved polymerases that can extend single, double and even quadruple mismatches, process non-canonical primer-template duplexes and bypass lesions found in ancient DNA, such as hydantoins and abasic sites. Applied to the PCR amplification of 47,000–60,000-year-old cave bear DNA, these outperformedTaqDNA polymerase by up to 150% and yielded amplification products at sample dilutions at whichTaqdid not. Our results demonstrate that engineered polymerases can expand the recovery of genetic information from Pleistocene specimens and may benefit genetic analysis in paleontology, archeology and forensic medicine.
登录
查看更多内容
影响因子:
46.9
作者:
Ghadessy, FJ;Ramsay, N;Holliger, P
通讯作者:
Holliger, P
影响因子:
56.9
作者:
Poinar, HN;Schwarz, C;Schuster, SC
通讯作者:
Schuster, SC
DOI:
10.1073/pnas.0503396102
发表时间:
2005-06-14
影响因子:
11.1
作者:
Anderung, C;Bouwman, A;Götherström, A
通讯作者:
Götherström, A
影响因子:
14.9
作者:
Debbie, P;Young, K;Wagner, R
通讯作者:
Wagner, R
影响因子:
5.6
作者:
Matsuda, T;Bebenek, K;Kunkel, TA
通讯作者:
Kunkel, TA