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Bacterial isolation by lectin-modified microengines.

ABSTRACT: New template-based self-propelled gold/nickel/polyaniline/platinum (Au/Ni/PANI/Pt) microtubular engines, functionalized with the Concanavalin A (ConA) lectin bioreceptor, are shown to be extremely useful for the rapid, real-time isolation of Escherichia coli (E. coli) bacteria from fuel-enhanced environmental, food, and clinical samples. These multifunctional microtube engines combine the selective capture of E. coli with the uptake of polymeric drug-carrier particles to provide an attractive motion-based theranostics strategy. Triggered release of the captured bacteria is demonstrated by movement through a low-pH glycine-based dissociation solution. The smaller size of the new polymer-metal microengines offers convenient, direct, and label-free optical visualization of the captured bacteria and discrimination against nontarget cells.

SUBMITTER: Campuzano S

PROVIDER: S-EPMC3256279 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature

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Bacterial isolation by lectin-modified microengines.

Campuzano Susana S Orozco Jahir J Kagan Daniel D Guix Maria M Gao Wei W Sattayasamitsathit Sirilak S Claussen Jonathan C JC Merkoçi Arben A Wang Joseph J

Nano letters 20111207 1

New template-based self-propelled gold/nickel/polyaniline/platinum (Au/Ni/PANI/Pt) microtubular engines, functionalized with the Concanavalin A (ConA) lectin bioreceptor, are shown to be extremely useful for the rapid, real-time isolation of Escherichia coli (E. coli) bacteria from fuel-enhanced environmental, food, and clinical samples. These multifunctional microtube engines combine the selective capture of E. coli with the uptake of polymeric drug-carrier particles to provide an attractive mo ...[more]

PMID: 22136558

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