کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2090213 1545948 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Highly discriminatory typing method for Listeria monocytogenes using polymorphic tandem repeat regions
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیوتکنولوژی یا زیست‌فناوری
پیش نمایش صفحه اول مقاله
Highly discriminatory typing method for Listeria monocytogenes using polymorphic tandem repeat regions
چکیده انگلیسی

Tandem repeats (TR), which are repetitive nucleotide sequences in DNA, are polymorphic both in repeat number and sequence. In this study, we developed a new typing method, multilocus TR sequence analysis (MLTSA), for the foodborne pathogen Listeria monocytogenes using sequence polymorphisms in three tandem repeat regions. The obtained dendrogram clustered L. monocytogenes strains of lineage I and lineage II separately, and formed three groups within the lineage I cluster, each of which included one of the three major L. monocytogenes epidemic clones (ECI, ECIa, and ECII). These results were consistent with a previously established virulence-gene-based MLST method. In comparison, our method grouped some epidemiologically related isolates together, which virulence-gene-based MLST did not. Moreover, our method, using three tandem repeat regions, showed a higher discriminatory power than the MLST method, which uses six virulence gene regions. This MLTSA approach using sequence polymorphisms in TR regions could be a useful tool in the epidemiological study of L. monocytogenes.


► A new typing method for Listeria monocytogenes was developed.
► The new method, MLTSA, used sequence polymorphism in 3 tandem repeat regions.
► The dendrogram obtained by MLTSA clustered lineages I and II separately.
► The MLTSA had a higher discriminatory power than virulence-gene-based MLST.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Microbiological Methods - Volume 90, Issue 3, September 2012, Pages 285–291
نویسندگان
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