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Using Biofunctional Magnetic Nanoparticles to Capture Vancomycin-Resistant Enterococci and Other Gram-Positive Bacteria at Ultralow Concentration
Abstract
Covalently linked to vancomycin (Van), chemically stable and highly magnetic anisotropic FePt magnetic nanoparticles (3-4 nm) become water-soluble and capture vancomycin-resistant enterococci (VRE) and other Gram-positive bacteria at concentrations approximately 10(1) cfu/mL via polyvalent ligand-receptor interactions. When a pyramidal end of a magnet "focuses" the nanoparticles into approximately 1 mm(2) area, the bacteria can be observed by an optical microscope and further identified by electron micrograph (EM). Compared to the conventional use of magnetic particles (with the sizes of 1-5 microm) in biological separation or drug delivery, magnetic nanoparticles, combined with specific receptor-ligand interactions, promise a sensitive and rapid protocol to detect pathogens.
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Metadata
- Authors
- Gu, H., Ho, P.-L., Tsang, K. W. T., Wang, L., & Xu, B.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2003-11-26
- Volume
- 125
- Issue
- 51
- Pages
- 15702-15703
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W1970998858
- Cited by
- 544
- References
- 1
- FWCI
- 17.93
- Type
- journal article
- Language
- en
- Open access
- closed
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