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Scientific Fields
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Published in Frontiers in Microbiology - 05 Aug 2016

Bessaud M, Sadeuh-Mba S, Joffret M, Razafindratsimandresy R, Polston P, Volle R, Rakoto-Andrianarivelo M, Blondel B, Njouom R and Delpeyroux F

Front. Microbiol. 7:1294

Enteroviruses are among the most common viruses infecting humans and can cause diverse clinical syndromes ranging from minor febrile illness to severe and potentially fatal diseases. Enterovirus species C (EV-C) consists of more than 20 types, among which the 3 serotypes of polioviruses, the etiological agents of poliomyelitis, are included. Biodiversity and evolution of EV-C genomes are shaped by frequent recombination events. Therefore, identification and characterization of circulating EV-C strains require the sequencing of different genomic regions.

 

A simple method was developed to sequence quickly the entire genome of EV-C isolates. Four overlapping fragments were produced separately by RT-PCR performed with generic primers. The four amplicons were then pooled and purified prior to be sequenced by high-throughput technique.

 

The method was assessed on a panel of EV-Cs belonging to a wide-range of types. It can be used to determine full-length genome sequences through de novo assembly of thousands of reads. It was also able to discriminate reads from closely related viruses in mixtures.

 

By decreasing the workload compared to classical Sanger-based techniques, this method will serve as a precious tool for sequencing large panels of EV-Cs isolated in cell cultures during environmental surveillance or from patients, including vaccine-derived polioviruses.
http://journal.frontiersin.org/article/10.3389/fmicb.2016.01294/abstract