Inactivation of a putative efflux pump (LmrB) in Streptococcus mutans results in altered biofilm structure and increased exopolysaccharide synthesis: implications for biofilm resistance
Inactivation of a putative efflux pump (LmrB) in Streptococcus mutans results in altered biofilm structure and increased exopolysaccharide synthesis: implications for biofilm resistance
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变形链球菌中假定的外排泵 (LmrB) 失活导致生物膜结构改变和胞外多糖合成增加:对生物膜耐药性的影响
DOI:
10.1080/08927014.2017.1323206
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发表时间:
2017-06
期刊:
影响因子:
2.7
通讯作者:
Wei X
中科院分区:
文献类型:
--
作者:
Liu Jia;Guo Lihong;Zhao Wei;Hu Xiaoli;Wei Xi;Zhang Jianying;Wei X
Abstract Efflux pumps are a mechanism associated with biofilm formation and resistance. There is limited information regarding efflux pumps in Streptococcus mutans, a major pathogen in dental caries. The aim of this study was to investigate potential roles of a putative efflux pump (LmrB) in S. mutans biofilm formation and susceptibility. Upon lmrB inactivation and antimicrobial exposure, the biofilm structure and expression of other efflux pumps were examined using confocal laser scanning microscopy (CLSM) and qRT-PCR. lmrB inactivation resulted in biofilm structural changes, increased EPS formation and EPS-related gene transcription (p < 0.05), but no improvement in susceptibility was observed. The expression of most efflux pump genes increased upon lmrB inactivation when exposed to antimicrobials (p < 0.05), suggesting a feedback mechanism that activated the transcription of other efflux pumps to compensate for the loss of lmrB. These observations imply that sole inactivation of lmrB is not an effective solution to control biofilms.
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影响因子:
3.2
作者:
J. Król;S. Biswas;Clay King;I. Biswas
通讯作者:
J. Król;S. Biswas;Clay King;I. Biswas
影响因子:
2.1
作者:
M. Tabak;K. Scher;E. Hartog;U. Romling;K. Matthews;M. Chikindas;S. Yaron
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M. Tabak;K. Scher;E. Hartog;U. Romling;K. Matthews;M. Chikindas;S. Yaron
影响因子:
2.4
作者:
Elshafie, Hazem S.;Sakr, Shimaa;Camele, Ippolito
通讯作者:
Camele, Ippolito
影响因子:
6.7
作者:
Xiao J;Klein MI;Falsetta ML;Lu B;Delahunty CM;Yates JR 3rd;Heydorn A;Koo H
通讯作者:
Koo H
影响因子:
3.2
作者:
Koo, H.;Xiao, J.;Jeon, J. G.
通讯作者:
Jeon, J. G.