Pathogenicity island-directed transfer of unlinked chromosomal virulence genes

Chen, J., Ram, G., Penadés, J. R. , Brown, S. and Novick, R. P. (2015) Pathogenicity island-directed transfer of unlinked chromosomal virulence genes. Molecular Cell, 57(1), pp. 138-149. (doi: 10.1016/j.molcel.2014.11.011) (PMID:25498143) (PMCID:PMC4289434)

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Abstract

In recent decades, the notorious pathogen Staphylococcus aureus has become progressively more contagious, more virulent, and more resistant to antibiotics. This implies a rather dynamic evolutionary capability, representing a remarkable level of genomic plasticity, most probably maintained by horizontal gene transfer. Here we report that the staphylococcal pathogenicity islands have a dual role in gene transfer: they not only mediate their own transfer, but they can independently direct the transfer of unlinked chromosomal segments containing virulence genes. While transfer of the island itself requires specific helper phages, transfer of unlinked chromosomal segments does not, so potentially any pac-type phage will serve. These results reveal that SaPIs can increase the horizontal exchange of accessory genes associated with disease and may shape pathogen genomes beyond the confines of their attachment sites.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Penades, Prof Jose R
Authors: Chen, J., Ram, G., Penadés, J. R., Brown, S., and Novick, R. P.
College/School:College of Medical Veterinary and Life Sciences > Institute of Infection Immunity and Inflammation
Journal Name:Molecular Cell
Publisher:Elsevier
ISSN:1097-2765
ISSN (Online):1097-4164
Published Online:11 December 2014

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