Ethanol-dispersed and antibody-conjugated polymer nanofibers for the selective capture and 3-dimensional culture of EpCAM-positive cells

Junghyo Yoon, Hee Sook Yoon, Yoojin Shin, Sanghyun Kim, Youngjun Ju, Jungbae Kim, Seok Chung

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Electrospun and ethanol-dispersed polystyrene-poly(styrene-co-maleic anhydride) (PS-PSMA) nanofibers (NFs) were used as a platform for the selective capture and three-dimensional culture of EpCAM-positive cells in cell culture medium and whole blood. The NFs were treated with streptavidin to facilitate bond formation between the amino groups of streptavidin and the maleic anhydride groups of the NFs. A biotinylated anti-EpCAM monoclonal antibody (mAb) was attached to the streptavidin-conjugated NFs via the selective binding of streptavidin and biotin. Upon simple mixing and shaking with EpCAM-positive cancer cells in a wide concentration range from 10 to 1000,000 cells per 10 mL, the mAb-attached NFs (mAb-NFs) captured the Ep-CAM positive cells in an efficiency of 59%-67% depending on initial cell concentrations, with minor mechanical capture of 14%-36%. Captured cells were directly cultured, forming cell aggregates, in the NF matrix, which ensures the cell proliferation and follow-up analysis. Furthermore, the capture capacity of mAb-NFs was assessed in the presence of whole blood and blood lysates, indicating cluster formation that captured target cells. It is anticipated that the antibody-attached NFs can be employed for the capture and analysis of very rare EpCAM positive circulating cancer cells.

Original languageEnglish
Pages (from-to)1617-1625
Number of pages9
JournalNanomedicine: Nanotechnology, Biology, and Medicine
Volume13
Issue number5
DOIs
Publication statusPublished - 2017 Jul 1

Keywords

  • Circulating tumor cells
  • Culture template
  • Electrospun nanofibers
  • Ethanol dispersion
  • Selective capture

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Bioengineering
  • Biomedical Engineering
  • Molecular Medicine
  • Materials Science(all)
  • Pharmaceutical Science

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