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Slippery Liquid-Infused Porous Surfaces that Prevent Bacterial Surface Fouling and Inhibit Virulence Phenotypes in Surrounding Planktonic Cells

机译:光滑的液体注入多孔表面可防止细菌表面结垢并抑制周围浮游细胞的毒力表型

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摘要

Surfaces that can both prevent bacterial biofouling and inhibit the expression of virulence phenotypes in surrounding planktonic bacteria are of interest in a broad range of contexts. Here, we report new slippery-liquid infused porous surfaces (SLIPS) that resist bacterial colonization (owing to inherent ‘slippery’ surface character) and also attenuate virulence phenotypes in non-adherent cells by gradually releasing small-molecule quorum sensing inhibitors (QSIs). QSIs active against Pseudomonas aeruginosa can be loaded into SLIPS without loss of their slippery and anti-fouling properties, and imbedded agents can be released into surrounding media over hours to days depending on the structures of the loaded agent. This controlled-release approach is useful for inhibiting virulence factor production and can also inhibit bacterial biofilm formation on nearby, non-SLIPS-coated surfaces. Finally, we demonstrate that this approach is compatible with the simultaneous release of more than one type of QSI, enabling greater control over virulence and suggesting new opportunities to tune the anti-fouling properties of these slippery surfaces.
机译:既能防止细菌生物结垢又能抑制周围浮游细菌中毒力表型表达的表面在广泛的背景下都引起人们的兴趣。在这里,我们报道了新的滑液注入的多孔表面(SLIPS),其能够抵抗细菌定殖(由于固有的“滑”表面特征),并且通过逐渐释放小分子群体感应抑制剂(QSI)来减弱非贴壁细胞的毒力表型。 。可以将对铜绿假单胞菌具有活性的QSI装入SLIPS,而不会丧失其滑爽性和防污性能,并且根据所装入试剂的结构,嵌入的试剂可以在数小时至数天内释放到周围介质中。这种控释方法可用于抑制毒力因子的产生,并且还可以抑制附近非SLIPS涂层表面上的细菌生物膜形成。最后,我们证明了这种方法与同时释放多种类型的QSI兼容,可以更好地控制毒力,并为调节这些光滑表面的防污性能提供了新的机会。

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