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Concurrent multi-sample analysis of low expressed biomarkers on single human cells by enzymatically amplified immunodetection in droplets

  • H. N. Joensson
  • , M. L. Samuels
  • , E. R. Brouzes
  • , M. Medkova
  • , M. Uhlén
  • , H. Andersson Svahn
  • , D. R. Link
  • KTH Royal Institute of Technology
  • RainDance Technologies

Research output: Contribution to conferencePaperpeer-review

Abstract

We have developed a novel microfluidic droplet based assay for analysis of low expressed cell surface proteins on individual cells at rates of hundreds of cells/s by antibody coupled enzymatic amplification in monodisperse droplets [1]. Here we expand the method to include concurrent analysis of multiple populations of single cells. We report the validation of the method by analyzing the human monocytic cell line U937 for two low expressed markers, CCR5 and CD19. Comparing our method to standard flow cytometry, we demonstrate increased peak separation, which should allow sorting by these low expressed biomarkers unavailable to flow cytometry.

Original languageEnglish
Pages1287-1289
Number of pages3
StatePublished - 2008
Event12th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2008 - San Diego, CA, United States
Duration: Oct 12 2008Oct 16 2008

Conference

Conference12th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2008
Country/TerritoryUnited States
CitySan Diego, CA
Period10/12/0810/16/08

Keywords

  • Antibodies
  • Cell surface biomarkers
  • Droplets
  • Enzymes

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