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A Polymer/Peptide Complex-Based Sensor Array That Discriminates Bacteria in Urine.

Jinsong HanHaoran ChengBenhua WangMarkus Santhosh BraunXiaobo FanMarkus BenderWei HuangCornelius DomhanWalter MierThomas LindnerKai SeehaferMichael WinkUwe H F Bunz
Published in: Angewandte Chemie (International ed. in English) (2017)
A negatively charged poly(para-phenyleneethynylene) (PPE) forms electrostatic complexes with four positively charged antimicrobial peptides (AMP). The AMPs partially quench the fluorescence of the PPE and discriminate fourteen different bacteria in water and in human urine by pattern-based fluorescence recognition; the AMP-PPE complexes bind differentially to the components of bacterial surfaces. The bacterial species and strains form clusters according to staining properties (Gram-positive and Gram-negative) or genetic similarity (genus, species, and strain). The identification and data treatment is performed by pattern evaluation with linear discriminant analysis (LDA) of the collected fluorescence intensity data.
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