TY - JOUR
T1 - Evolutionary relationships among strains of Mycobacterium tuberculosis with few copies of IS6110
AU - Dale, Jeremy W.
AU - Al-Ghusein, Hasan
AU - Al-Hashmi, Salim
AU - Butcher, Philip
AU - Dickens, Anne L.
AU - Drobniewski, Francis
AU - Forbes, Ken J.
AU - Gillespie, Stephen H.
AU - Lamprecht, Dianie
AU - McHugh, Timothy D.
AU - Pitman, Richard
AU - Rastogi, Nalin
AU - Smith, Andrew T.
AU - Sola, Christophe
AU - Yesilkaya, Hasan
PY - 2003/4/1
Y1 - 2003/4/1
N2 - Molecular typing of Mycobacterium tuberculosis by using IS6110 shows low discrimination when there are fewer than five copies of the insertion sequence. Using a collection of such isolates from a study of the epidemiology of tuberculosis in London, we have shown a substantial degree of congruence between IS6110 patterns and both spoligotype and PGRS type. This indicates that the IS6110 types mainly represent distinct families of strains rather than arising through the convergent insertion of IS6110 into favored positions. This is supported by identification of the genomic sites of the insertion of IS6110 in these strains. The combined data enable identification of the putative evolutionary relationships of these strains, comprising three lineages broadly associated with patients born in South Asia (India and Pakistan), Africa, and Europe, respectively. These lineages appear to be quite distinct from M. tuberculosis isolates with multiple copies of IS6110.
AB - Molecular typing of Mycobacterium tuberculosis by using IS6110 shows low discrimination when there are fewer than five copies of the insertion sequence. Using a collection of such isolates from a study of the epidemiology of tuberculosis in London, we have shown a substantial degree of congruence between IS6110 patterns and both spoligotype and PGRS type. This indicates that the IS6110 types mainly represent distinct families of strains rather than arising through the convergent insertion of IS6110 into favored positions. This is supported by identification of the genomic sites of the insertion of IS6110 in these strains. The combined data enable identification of the putative evolutionary relationships of these strains, comprising three lineages broadly associated with patients born in South Asia (India and Pakistan), Africa, and Europe, respectively. These lineages appear to be quite distinct from M. tuberculosis isolates with multiple copies of IS6110.
UR - http://www.scopus.com/inward/record.url?scp=0344838395&partnerID=8YFLogxK
U2 - 10.1128/JB.185.8.2555-2562.2003
DO - 10.1128/JB.185.8.2555-2562.2003
M3 - Article
C2 - 12670980
AN - SCOPUS:0344838395
SN - 0021-9193
VL - 185
SP - 2555
EP - 2562
JO - Journal of Bacteriology
JF - Journal of Bacteriology
IS - 8
ER -