NDLI: Use of O-Antigen Gene Cluster-Specific PCRs for the Identification and O-Genotyping of Yersinia pseudotuberculosis and Yersinia pestis

Content Provider	PubMed Central
Author	Bogdanovich, Tatiana Elisabeth, Carniel Fukushima, Hiroshi Skurnik, Mikael
Copyright Year	2003
Abstract	Yersinia pestis is a very recently evolved clone of Yersinia pseudotuberculosis serotype O:1b. This close relationship causes potential difficulties in DNA-based diagnostic methods. Analysis of the O-antigen gene clusters in these two organisms identified two regions that were used to specifically identify Y. pestis-Y. pseudotuberculosis as a group or Y. pestis alone. Both PCR assays were found to be 100% specific when tested on a large collection of Yersinia species and other Enterobacteriaceae. Furthermore, advantage was taken of the different setups of the O-antigen gene clusters of the 21 known Y. pseudotuberculosis serotypes to develop a multiplex PCR assay to replace the conventional serotyping method of Y. pseudotuberculosis by O-genotyping. The multiplex PCR assay contained nine sets of specific PCRs in a single tube and when used on Y. pseudotuberculosis reference strains allowed the distinction of 14 individual serotypes and two duplex serotypes (O:4a-O:8 and O:12-O:13). Serotype O:7, O:9, and O:10 strains required additional PCRs for O-genotyping. Once applied to Y. pseudotuberculosis strains of various origins, a very good correlation between classical serotypes and O-genotypes was observed, although some discrepancies were found. O-genotyping also proved useful to correct misidentification of some strains and to type Y. pseudotuberculosis isolates that had lost the expression of the O-antigen. The PCR-based O-genotyping can easily be applied in conventional laboratories, without the need for tedious preparation of a large set of specific antisera.
Related Links	http://dx.doi.org/10.1128/jcm.41.11.5103-5112.2003
Ending Page	5112
Page Count	10
Starting Page	5103
File Format	PDF
ISSN	00951137
e-ISSN	1098660X
Journal	Journal of Clinical Microbiology
Issue Number	11
Volume Number	41
Language	English
Publisher	American Society for Microbiology
Publisher Date	2003-11-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Microbiology (medical) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Microbiology (medical)

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