Chlamydia trachomatis from Australian Aboriginal people with trachoma are polyphyletic composed of multiple distinctive lineages

Patiyan Andersson, Simon Harris, H Smith, J Hadfield, C O'Neill, LT Cutcliffe, Fiona Douglas, LV Asche, Helena M.B. Seth-Smith, James Hadfield, O'Neill Colette E, Cutcliffe Lesley T, Douglas Fiona P, LV Asche, John Mathews, Susan Hutton, Derek Sarovich, Steven Tong, Ian Clarke, Nicholas ThomsonPhilip Giffard

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Abstract

Chlamydia trachomatis causes sexually transmitted infections and the blinding disease trachoma. Current data on C. trachomatis phylogeny show that there is only a single trachoma-causing clade, which is distinct from the lineages causing urogenital tract (UGT) and lymphogranuloma venerum diseases. Here we report the whole-genome sequences of ocular C. trachomatis isolates obtained from young children with clinical signs of trachoma in a trachoma endemic region of northern Australia. The isolates form two lineages that fall outside the classical trachoma lineage, instead being placed within UGT clades of the C. trachomatis phylogenetic tree. The Australian trachoma isolates appear to be recombinants with UGT C. trachomatis genome backbones, in which loci that encode immunodominant surface proteins (ompA and pmpEFGH) have been replaced by those characteristic of classical ocular isolates. This suggests that ocular tropism and association with trachoma are functionally associated with some sequence variants of ompA and pmpEFGH.
Original languageEnglish
Article number10688
Pages (from-to)1-11
Number of pages11
JournalNature Communications
Volume25
Issue number7
DOIs
Publication statusPublished - 2016

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    Andersson, P., Harris, S., Smith, H., Hadfield, J., O'Neill, C., Cutcliffe, LT., Douglas, F., Asche, LV., Seth-Smith, H. M. B., Hadfield, J., Colette E, ON., Lesley T, C., Fiona P, D., Asche, LV., Mathews, J., Hutton, S., Sarovich, D., Tong, S., Clarke, I., ... Giffard, P. (2016). Chlamydia trachomatis from Australian Aboriginal people with trachoma are polyphyletic composed of multiple distinctive lineages. Nature Communications, 25(7), 1-11. [10688]. https://doi.org/10.1038/ncomms10688