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Bacteria Detection at a Single-Cell Level through a Cyanotype-Based Photochemical Reaction
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- Dietvorst, Jiri (author)
- CSIC, Inst Microelect Barcelona IMB CNM, Bellaterra 08193, Barcelona, Spain.;CSIC, Inst Adv Chem Catalonia IQAC, Dept Chem & Biomol Nanotechnol, Nanobiotechnol Diagnost Nb4D, Barcelona 08034, Spain.
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- Ferrer-Vilanova, Amparo (author)
- CSIC, Inst Microelect Barcelona IMB CNM, Bellaterra 08193, Barcelona, Spain.;Univ Autonoma Barcelona, Dept Quim, Bellaterra 08193, Barcelona, Spain.
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- Iyengar, Sharath Narayana (author)
- KTH,Nanobioteknologi,Science for Life Laboratory, SciLifeLab
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- CSIC, Inst Microelect Barcelona IMB CNM, Bellaterra 08193, Barcelona, Spain;CSIC, Inst Adv Chem Catalonia IQAC, Dept Chem & Biomol Nanotechnol, Nanobiotechnol Diagnost Nb4D, Barcelona 08034, Spain. CSIC, Inst Microelect Barcelona IMB CNM, Bellaterra 08193, Barcelona, Spain.;Univ Autonoma Barcelona, Dept Quim, Bellaterra 08193, Barcelona, Spain. (creator_code:org_t)
- 2021-12-21
- 2022
- English.
- In: Analytical Chemistry. - : American Chemical Society (ACS). - 0003-2700 .- 1520-6882. ; 94:2, s. 787-792
- Journal article (peer-reviewed)
Abstract
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- The detection of living organisms at very low concentrations is necessary for the early diagnosis of bacterial infections, but it is still challenging as there is a need for signal amplification. Cell culture, nucleic acid amplification, or nano-structure-based signal enhancement are the most common amplification methods, relying on long, tedious, complex, or expensive procedures. Here, we present a cyanotype-based photochemical amplification reaction enabling the detection of low bacterial concentrations up to a single-cell level. Photocatalysis is induced with visible light and requires bacterial metabolism of iron-based compounds to produce Prussian Blue. Bacterial activity is thus detected through the formation of an observable blue precipitate within 3 h of the reaction, which corresponds to the concentration of living organisms. The short time-to-result and simplicity of the reaction are expected to strongly impact the clinical diagnosis of infectious diseases.
Subject headings
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
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