Scientists of the Medical Faculty of the University Münster and the University Hospital Münster in collaboration with scientists of the enterprise `Life Technologies Corporation´ were the first to release a draft genome sequence of a German enterohemorrhagic E. coli (EHEC) 2011 outbreak strain on June 3rd. Their in-depth genomic characterization of this outbreak was published on July 20th in the online open access journal PLoS ONE.
Microbiologist Prof. Dr. Dag Harmsen from the Department of Periodontology in Münster – the corresponding author of this publication - is leading a team responsible for sequencing and conducting the bioinformatics analysis in Münster. "Thanks to the Ion Torrent PGM™ next generation sequencing (NGS) platform we were very quick. In essence this is the first demonstration where NGS was used in real-time for genomic outbreak analysis. There have already been some publications using NGS to retrospectively analyze outbreaks, but analysis during an ongoing outbreak had not yet been performed (figure). Basically a new discipline is born, i.e. prospective genomics epidemiology," he explains.
Such rapid sequencing is to be considered a "technical masterpiece, which will have immediate impact on surveillance and diagnostics and most probably in the future also on therapeutics", says Prof. Dr. Wilhelm Schmitz, Dean of the Medical Faculty of the University Münster.
"By comparing the EHEC O104:H4 outbreak genome with a simultaneously sequenced genome of an EHEC O104:H4 isolate from an HUS patient (isolated in Germany in 2001; the HUSEC041 reference strain), we were able to demonstrate that the current outbreak strain was not– as initially suggested - derived from the very similar enteroaggregative E. coli (EAEC) O104:H4 55989 strain but from a yet unknown Shiga toxin-producing O104:H4 progenitor strain", said Dr. Alexander Mellmann of the `National Consulting Laboratory for Hemolytic Uremic Syndrome (HUS) at the Institute of Hygiene, Münster.
The senior author of the PLoS ONE study and head of the Institute of Hygiene, Prof. Dr. h.c. Helge Karch, added, “This study underlined the great importance of the long-term storage of historical HUS isolates that were collected by us since 1996 to understand the evolution of highly-pathogenic EHEC strains.”
Mellmann A*, Harmsen D*, Cummings CA*, Zentz EB, Leopold SR, et al. (2011) Prospective Genomic Characterization of the German Enterohemorrhagic Escherichia coli O104:H4 Outbreak by Rapid Next Generation Sequencing Technology. PLoS ONE 6(7): e22751. doi:10.1371/journal.pone.0022751
*These authors contributed equally to this work.
Stefan Dreising | idw
Organ-on-a-chip mimics heart's biomechanical properties
23.02.2017 | Vanderbilt University
Researchers identify cause of hereditary skeletal muscle disorder
22.02.2017 | Klinikum der Universität München
In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport
Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...
The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...
Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...
Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
13.02.2017 | Event News
10.02.2017 | Event News
09.02.2017 | Event News
24.02.2017 | Life Sciences
24.02.2017 | Life Sciences
24.02.2017 | Trade Fair News