GI-type T4SS-mediated horizontal transfer of the 89K pathogenicity island in epidemic Streptococcus suis serotype 2.
GI-type T4SS-mediated horizontal transfer of the 89K pathogenicity island in epidemic Streptococcus suis serotype 2.
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流行性猪链球菌血清型 2 中 GI 型 T4SS 介导的 89K 致病岛水平转移
DOI:
10.1111/j.1365-2958.2011.07553.x
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发表时间:
2011-03
影响因子:
3.6
通讯作者:
Gao GF
中科院分区:
文献类型:
--
作者:
Li M;Shen X;Yan J;Han H;Zheng B;Liu D;Cheng H;Zhao Y;Rao X;Wang C;Tang J;Hu F;Gao GF
Pathogenicity islands (PAIs), a distinct type of genomic island (GI), play important roles in the rapid adaptation and increased virulence of pathogens. 89K is a newly identified PAI in epidemic Streptococcus suis isolates that are related to the two recent large‐scale outbreaks of human infection in China. However, its mechanism of evolution and contribution to the epidemic spread of S. suis 2 remain unknown. In this study, the potential for mobilization of 89K was evaluated, and its putative transfer mechanism was investigated. We report that 89K can spontaneously excise to form an extrachromosomal circular product. The precise excision is mediated by an 89K‐borne integrase through site‐specific recombination, with help from an excisionase. The 89K excision intermediate acts as a substrate for lateral transfer to non‐89K S. suis 2 recipients, where it reintegrates site‐specifically into the target site. The conjugal transfer of 89K occurred via a GI type IV secretion system (T4SS) encoded in 89K, at a frequency of 10−6 transconjugants per donor. This is the first demonstration of horizontal transfer of a Gram‐positive PAI mediated by a GI‐type T4SS. We propose that these genetic events are important in the emergence, pathogenesis and persistence of epidemic S. suis 2 strains.
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影响因子:
3.7
作者:
Chen C;Tang J;Dong W;Wang C;Feng Y;Wang J;Zheng F;Pan X;Liu D;Li M;Song Y;Zhu X;Sun H;Feng T;Guo Z;Ju A;Ge J;Dong Y;Sun W;Jiang Y;Wang J;Yan J;Yang H;Wang X;Gao GF;Yang R;Wang J;Yu J
通讯作者:
Yu J
影响因子:
3.6
作者:
Atmakuri, K;Cascales, E;Christie, PJ
通讯作者:
Christie, PJ
DOI:
10.1073/pnas.95.12.7057
发表时间:
1998-06-09
影响因子:
11.1
作者:
Bohne, J;Yim, A;Binns, AN
通讯作者:
Binns, AN
影响因子:
11.3
作者:
Juhas M;van der Meer JR;Gaillard M;Harding RM;Hood DW;Crook DW
通讯作者:
Crook DW
影响因子:
3.2
作者:
Burrus, V;Waldor, MK
通讯作者:
Waldor, MK