Centrifuge-based cell encapsulation in hydrogel microbeads using sub-microliter sample solution

Hiroaki Onoe, Kiichi Inamori, Masahiro Takinoue, Shoji Takeuchi

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


This paper describes a simple, rapid, and inexpensive method for cell encapsulation that uses a small amount (sub-microliter-scale) of cell-suspended pre-gel solution. This method requires only a glass capillary, an acrylic holder, and a tabletop centrifuge, and achieves cell encapsulation in calcium alginate microbeads using cell-suspended sub-microliter-volume pre-gel solution in 20 s. The method also ensures high cell encapsulation efficiency, with a sample loss of as low as several tens of nanoliters. Formation of calcium alginate hydrogel microbeads encapsulating Jurkat cells by the proposed method is experimentally demonstrated using 0.5 μL of cell-suspended sodium alginate solution. Our proposed method is expected to be a promising approach for encapsulating rare and precious samples by non-specialists of microfluidics working in the fields of point-of-care and tailor-made medicine.

Original languageEnglish
Pages (from-to)30480-30484
Number of pages5
JournalRSC Advances
Issue number58
Publication statusPublished - 2014
Externally publishedYes

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering


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