期刊
BIOCONJUGATE CHEMISTRY
卷 28, 期 1, 页码 33-37出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.bioconjchem.6b00524
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资金
- NIH [R01HL113156, R21CA205322, R01EB004626, R01EB010011, HHSN268201000044C, U54-CA119349, T32-CA79443]
- Department of Defense OCRP Program Award [W81XWH-14-1-0279]
The use of inorganic nanoparticles (NPs) for biosensing requires that they exhibit high colloidal stability under various physiological conditions. Here, we report on a general approach to render hydrophobic NPs into hydrophilic ones that are ready for bioconjugation. The method uses peglyated polymers conjugated with multiple dopamines, which results in multidentate coordination. As proof-of concept, we applied the coating to stabilize ferrite and lanthanide NPs synthesized by thermal decomposition. Both polymer coated NPs showed excellent water solubility and were stable at high salt concentrations under physiological conditions. We used these NPs as molecular-sensing agents to detect exosomes and bacterial nucleic acids.
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