A metal-chelating polymer for chelating zirconium and its use in mass cytometry

Abstract Mass cytometry (MC) uses antibodies (Abs) labeled with heavy metal isotopes to monitor biomarker expression on individual cells. Metal-chelating polymers (MCPs) conjugated to the Abs increase the number of metal ions carried per Ab, and this increases the signal generated per Ab. Although the MC detector can detect 134 metal isotopes with unique weight simultaneously, in the current literature a maximum of 43 isotopes have been analyzed simultaneously. Currently available MCPs for MC are well-suited for use with lanthanides and bismuth, but are incompatible with other metals of interest. Here we examine a new MCP with deferoxamine pendant groups designed to chelate Zr ions. Zr has 4 isotopes useful for MC. To overcome the limited water solubility of deferoxamine groups, we introduced pendant polyethylene glycol chains. The polymer also included fluorescein pendant groups, along with a biotin terminal end-group. Once loaded with Zr, the polymers were incubated with streptavidin-coated polystyrene microbead and analyzed using epifluorescence microscopy and imaging MC.

• Publication year

  2019

• Venue

  European Polymer Journal

• Publication date

  2019-07-17

• Fields of study

  Materials Science, Chemistry

• Identifiers
  DOI 10.1016/J.EURPOLYMJ.2019.08.002
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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