FN Archimer Export Format PT J TI Bayesian population structure analysis reveals presence of phylogeographically specific sublineages within previously ill-defined T group of Mycobacterium tuberculosis BT AF REYNAUD, Yann ZHENG, Chao WU, Guihui SUN, Qun RASTOGI, Nalin AS 1:1;2:1,2;3:3;4:2;5:1; FF 1:;2:;3:;4:;5:; C1 Inst Pasteur Guadeloupe, TB & Mycobacteria Unit, WHO Supranat TB Reference Lab, Morne Joliviere Abymes, Guadeloupe, France. Sichuan Univ, Coll Life Sci, Chengdu, Sichuan, Peoples R China. Chengdu Publ Hlth Clin Ctr, Chengdu, Sichuan, Peoples R China. C2 INST PASTEUR GUADELOUPE, FRANCE UNIV SICHUAN, CHINA CHENGDU PUBL HLTH CLIN CTR, CHINA IN DOAJ IF 2.766 TC 5 UR https://archimer.ifremer.fr/doc/00771/88280/93904.pdf https://archimer.ifremer.fr/doc/00771/88280/93905.tif https://archimer.ifremer.fr/doc/00771/88280/93906.tif https://archimer.ifremer.fr/doc/00771/88280/93907.tif https://archimer.ifremer.fr/doc/00771/88280/93908.tif https://archimer.ifremer.fr/doc/00771/88280/93909.pot https://archimer.ifremer.fr/doc/00771/88280/93910.xls https://archimer.ifremer.fr/doc/00771/88280/93911.xlsx https://archimer.ifremer.fr/doc/00771/88280/93912.xlsx LA English DT Article AB Mycobacterium tuberculosis genetic structure, and evolutionary history have been studied for years by several genotyping approaches, but delineation of a few sublineages remains controversial and needs better characterization. This is particularly the case of T group within lineage 4 (L4) which was first described using spoligotyping to pool together a number of strains with ill-defined signatures. Although T strains were not traditionally considered as a real phylogenetic group, they did contain a few phylogenetically meaningful sublineages as shown using SNPs. We therefore decided to investigate if this observation could be corroborated using other robust genetic markers. We consequently made a first assessment of genetic structure using 24-loci MIRU-VNTRs data extracted from the SITVIT2 database (n = 607 clinical isolates collected in Russia, Albania, Turkey, Iraq, Brazil and China). Combining Minimum Spanning Trees and Bayesian population structure analyses (using STRUCTURE and TESS softwares), we distinctly identified eight tentative phylogenetic groups (T1-T8) with a remarkable correlation with geographical origin. We further compared the present structure observed with other L4 sublineages (n = 416 clinical isolates belonging to LAM, Haarlem, X, S sublineages), and showed that 5 out of 8 T groups seemed phylogeographically well-defined as opposed to the remaining 3 groups that partially mixed with other L4 isolates. These results provide with novel evidence about phylogeographically specificity of a proportion of ill-defined T group of M. tuberculosis. The genetic structure observed will now be further validated on an enlarged worldwide dataset using Whole Genome Sequencing (WGS). PY 2017 PD FEB SO Plos One SN 1932-6203 PU Public Library Science VL 12 IS 2 UT 000393700100055 DI 10.1371/journal.pone.0171584 ID 88280 ER EF