Primase-based whole genome amplification.
Primase-based whole genome amplification.
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DOI:
10.1093/nar/gkn377
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发表时间:
2008-08
影响因子:
14.9
通讯作者:
Kong H
中科院分区:
文献类型:
--
作者:
Li Y;Kim HJ;Zheng C;Chow WH;Lim J;Keenan B;Pan X;Lemieux B;Kong H
In vitro DNA amplification methods, such as polymerase chain reaction (PCR), rely on synthetic oligonucleotide primers for initiation of the reaction. In vivo, primers are synthesized on-template by DNA primase. The bacteriophage T7 gene 4 protein (gp4) has both primase and helicase activities. In this study, we report the development of a primase-based Whole Genome Amplification (pWGA) method, which utilizes gp4 primase to synthesize primers, eliminating the requirement of adding synthetic primers. Typical yield of pWGA from 1 ng to 10 ng of human genomic DNA input is in the microgram range, reaching over a thousand-fold amplification after 1 h of incubation at 37°C. The amplification bias on human genomic DNA is 6.3-fold among 20 loci on different chromosomes. In addition to amplifying total genomic DNA, pWGA can also be used for detection and quantification of contaminant DNA in a sample when combined with a fluorescent reporter dye. When circular DNA is used as template in pWGA, 108-fold of amplification is observed from as low as 100 copies of input. The high efficiency of pWGA in amplifying circular DNA makes it a potential tool in diagnosis and genotyping of circular human DNA viruses such as human papillomavirus (HPV).
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影响因子:
7
作者:
Hosono, S;Faruqi, AF;Lasken, RS
通讯作者:
Lasken, RS
影响因子:
2.9
作者:
Kittler, R;Stoneking, M;Kayser, M
通讯作者:
Kayser, M
影响因子:
14.9
作者:
Giglio, S;Monis, PT;Saint, CP
通讯作者:
Saint, CP
影响因子:
4.8
作者:
Guo, SY;Tabor, S;Richardson, CC
通讯作者:
Richardson, CC
DOI:
10.1073/pnas.73.3.780
发表时间:
1976-01-01
影响因子:
11.1
作者:
MARK, DF;RICHARDSON, CC
通讯作者:
RICHARDSON, CC