Validation of CDr15 as a new dye for detecting neutrophil extracellular trap

Sang Jin Kim, Jiyoung Kim, Bonah Kim, Won Woo Lee, Xiao Liu, Young Tae Chang, Jong Wan Park

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Neutrophil extracellular trap (NET) is one of the first-line defenses against microbes. Under certain circumstances, however, it also plays an aggravating factor in diverse inflammation-related diseases including cancers and vascular diseases. Our aim is to develop a new method to detect NET in cells and tissues using a DNA-specific fluorescence probe CDr15. CDr15 was characterized to be impermeable to the cell membranes and to emit a strong fluorescence in association with extracellular DNAs in NET. Due to these properties, CDr15 was successfully shown to quantify NETs in vitro and to be applicable for real-time monitoring NET formation in PMA-stimulated neutrophils. Even in formaldehyde-fixed tumor specimens, CDr15 could detect NETs spreading around cancer cells. Compared with DAPI and SYTOX DNA dyes, CDr15 showed a lower level of background fluorescence and a higher specificity in NET detection. Based on these results, we propose CDr15 as a novel marker of NET to be applicable in experimental and clinical studies.

Original languageEnglish
Pages (from-to)646-653
Number of pages8
JournalBiochemical and Biophysical Research Communications
Volume527
Issue number3
DOIs
StatePublished - 30 Jun 2020

Bibliographical note

Publisher Copyright:
© 2020 Elsevier Inc.

Keywords

  • CDr15
  • DNA dye
  • Fluorescence imaging
  • Neutrophil extracellular trap

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