Simultaneous Identification of Clinically Common Vibrio parahaemolyticus Serotypes Using Probe Melting Curve Analysis

Autor: Minxu Li, Yixiang Jiang, Xiaolu Shi, Yinghui Li, Min Jiang, Yiman Lin, Yaqun Qiu, Le Zuo, Yinhua Deng, Zeren Lin, Yiqun Liao, Qingge Li, Qinghua Hu
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Frontiers in Cellular and Infection Microbiology, Vol 9 (2019)
Druh dokumentu: article
ISSN: 2235-2988
DOI: 10.3389/fcimb.2019.00385
Popis: The dynamic nature of Vibrio parahaemolyticus epidemiology has presented a unique challenge for disease intervention strategies. Despite the continued rise of disease incidence and outbreaks of vibriosis, as well as the global emergence of pandemic clones and serovariants with enhanced virulence, there is a paucity of molecular methods for the serotyping of V. parahaemolyticus strains to improve disease surveillance and outbreak investigations. We describe the development of a multiplex ligation reaction based on probe melting curve analysis (MLMA) for the simultaneous identification of 11 clinically most common V. parahaemolyticus serotypes spanning a 10-year period. Through extensive sequence analyses using 418 genomes, specific primers and probes were designed for a total of 22 antigen gene targets for the O- and K- serogroups. Additionally, the toxR gene was incorporated into the assay for the confirmation of V. parahaemolyticus. All gene targets were detected by the assay and gave expected Tm values, without any cross reactions between the 11 clinically common serotypes or with 38 other serotypes. The limit of identification for all gene targets ranged from 0.1 to 1 ng/μL. The intra- and inter-assay standard deviations and the coefficients of variation were no more than 1°C and
Databáze: Directory of Open Access Journals