Comparison of five commercial DNA extraction kits for the recovery of Yersinia pestis DNA from bacterial suspensions and spiked environmental samples

被引：40

作者：

Dauphin, L. A. ^{[2
]}

Stephens, K. W. ^{[2
]}

Eufinger, S. C. ^{[1
,2
]}

Bowen, M. D. ^{[2
,3
]}

机构：

[1] Emory Univ, Grad Div Biol & Biomed Sci, Atlanta, GA 30322 USA

[2] CDC, BRRAT Lab, DBPR, NCPDCID, Atlanta, GA 30333 USA

[3] CDC, Gastroenteritis & Resp Viruses Lab Branch, Div Viral Dis, Natl Ctr Immunizat & Resp Dis, Atlanta, GA 30333 USA

来源：

JOURNAL OF APPLIED MICROBIOLOGY | 2010年 / 108卷 / 01期

关键词：

bioterrorism; DNA extraction; plague; Yersinia pestis; CHAIN-REACTION ASSAY; PCR ASSAY; PLASMIDS; SOIL;

D O I：

10.1111/j.1365-2672.2009.04404.x

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Aim: To evaluate commercial DNA extraction kits for their ability to isolate DNA from Yersinia pestis suspensions and spiked environmental samples. Methods and Results: Five commercially available DNA extraction kits were evaluated: the ChargeSwitch gDNA Mini Bacteria Kit, the IT 1-2-3 Sample DNA Purification Kit, the MasterPure Complete DNA and RNA Purification Kit, the QIAamp DNA Blood Mini Kit and the UltraClean Microbial DNA Isolation Kit. The extraction methods were performed upon six Y. pestis strains and spiked environmental specimens, including three swab types and one powder type. Taqman real-time PCR analysis revealed that the use of the MasterPure kit resulted in DNA with the most consistently positive results and the lowest limit of detection from Y. pestis suspensions and spiked environmental samples. Conclusion: Comparative evaluations of the five commercial DNA extraction methods indicated that the MasterPure kit was superior for the isolation of PCR-amplifiable DNA from Y. pestis suspensions and spiked environmental samples. Significance and Impact of the Study: The results of this study can assist diagnostic laboratories with selecting the best extraction method for processing environmental specimens for subsequent detection of Y. pestis by real-time PCR.

引用

页码：163 / 172

页数：10

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