Brucella melitensis and Brucella abortus genotyping via real-time PCR targeting 21 variable genome loci.
J Microbiol Methods
; 180: 106125, 2021 01.
Article
em En
| MEDLINE
| ID: mdl-33333100
ABSTRACT
Brucella melitensis and Brucella abortus account for almost all cases of brucellosis in Turkish population. We developed a fourplex quantitative real-time PCR (qPCR) assay for the electrophoresis-free, rapid and cost-effective differentiation of B. abortus and B. melitensis from the other Brucella spp. The 4-plex species differentiation assay was combined with a qPCR assay targeting 17 different single nucleotide polymorphism (SNP) loci in Brucella genomes. This combination resulted in a 21 Variable Genome Loci (21-VGL) qPCR assay for high resolution genotyping of B. abortus and B. melitensis. A total of 486 Brucella was analyzed using the qPCR assay to create a 21-VGL profile database. The database contained the profiles of 55 B. abortus, 352 B. melitensis, 3 B. ceti, 6 B. neotomae, 7 B. ovis, 6 B. pinnipedialis, 44 B. suis and 13 B. canis strains. The 21-VGL Brucella genotyping clearly distinguished B. abortus, B. melitensis, B. neotomae and B. ovis. The 21-VGL approach could not distinguish B. pinnipedialis from B. ceti and some B. suis genotypes from B. canis. The results revealed that more than 99% of the Brucella isolates in Turkey were B. melitensis and 21-VGL genotyping can be reduced to 8-VGL B. melitensis genotyping without any loss of genotyping resolution. To our knowledge, we introduced the fastest and the lowest-cost B. abortus and B. melitensis genotyping and species differentiation methodology in the literature.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Brucella abortus
/
Brucelose
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Brucella melitensis
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Loci Gênicos
/
Reação em Cadeia da Polimerase em Tempo Real
Limite:
Humans
País/Região como assunto:
Asia
Idioma:
En
Revista:
J Microbiol Methods
Ano de publicação:
2021
Tipo de documento:
Article