D-galactan II is an immunodominant antigen in O1 lipopolysaccharide and affects virulence in Klebsiella pneumoniae: implication in vaccine design.
D-galactan II is an immunodominant antigen in O1 lipopolysaccharide and affects virulence in Klebsiella pneumoniae: implication in vaccine design.
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D-Galactan II是O1脂多糖中的一种免疫主导抗原,会影响肺炎克雷伯氏菌的毒力:对疫苗设计的影响。
DOI:
10.3389/fmicb.2014.00608
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发表时间:
2014
影响因子:
5.2
通讯作者:
Wang JT
中科院分区:
文献类型:
--
作者:
Hsieh PF;Wu MC;Yang FL;Chen CT;Lou TC;Chen YY;Wu SH;Sheu JC;Wang JT
In the O1 strain of Klebsiella, the lipopolysaccharide (LPS) O-antigen is composed of D-galactan I and D-galactan II. Although the composition of the O1 antigen of Klebsiella was resolved more than two decades, the genetic locus involved in the biosynthesis of D-galactan II and the role of D-galactan II in bacterial pathogenesis remain unclear. Here, we report the identification of the D-galactan II-synthesizing genes by screening a transposon mutant library of an acapsulated Klebsiella pneumoniae O1 strain with bacteriophage. K. pneumoniae strain deleted for wbbY exhibited abrogated D-galactan II production; altered serum resistance and attenuation of virulence. Serologic analysis of K. pneumoniae clinical isolates demonstrated that D-galactan II was more prevalent in community-acquired pyogenic liver abscess (PLA)—causing strains than in non-tissue-invasive strains. WbbY homologs, WbbZ homologs, and lipopolysaccharide structures based on D-galactan II also were present in several Gram-negative bacteria. Immunization of mice with the magA-mutant (K−1 O1) (that is, with a LPS D-galactan II-producing strain) provided protection against infection with an O1:K2 PLA strain. Our findings indicate that both WbbY and WbbZ homologs are sufficient for the synthesis of D-galactan II. D-galactan II represents an immunodominant antigen; is conserved among multiple species of Gram-negative bacteria and could be a useful vaccine candidate.
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影响因子:
9.4
作者:
Hansen, DS;Mestre, F;Benedí, VJ
通讯作者:
Benedí, VJ
DOI:
10.1038/nbt1183-784
发表时间:
1983-01-01
期刊:
BIO-TECHNOLOGY
影响因子:
--
作者:
SIMON, R;PRIEFER, U;PUHLER, A
通讯作者:
PUHLER, A
影响因子:
3.1
作者:
MERINO, S;CAMPRUBI, S;TOMAS, JM
通讯作者:
TOMAS, JM
影响因子:
6.4
作者:
Hsieh, Pei-Fang;Lin, Tzu-Lung;Wang, Jin-Town
通讯作者:
Wang, Jin-Town
影响因子:
11.8
作者:
Ramphal, R;Ambrose, PG
通讯作者:
Ambrose, PG