Rayleigh Instability-Driven Coaxial Spinning of Knotted Cell-Laden Alginate Fibers as Artificial Lymph Vessels

Sara Seidelin Majidi, Yingchun Su, Mathias Lindh Jørgensen, Christoph Müller, Pourya Forooghi, Guangjun Nie, Menglin Chen

Research output: Contribution to journalArticlepeer-review

Abstract

Constructing artificial lymph vessels, which play a key role in the immune response, can provide new insights into immunology and disease pathologies. An immune tissue is a highly complex network that consists of lymph vessels, with a "beads-on-a-string"knotted structure. Herein, we present the facile and rapid fabrication of beads-on-a-string knotted cell-laden fibers using coaxial spinning of alginate by exploiting the Plateau-Rayleigh instability. It is shown how alterations in the flow rate and alginate concentration greatly affect the beads-on-a-string structure, rooted in the Plateau-Rayleigh instability theory. Biocompatibility was confirmed by the lactate dehydrogenase (LDH) assay and live/dead staining of the encapsulated human white blood cells. Finally, the encapsulated white blood cells were still functional as indicated by their anti-CD3 activation to secrete interleukin 2. The rapid fabrication of a cell-laden beads-on-a-string three-dimensional (3D) culture platform enables a crude mimicry of the lymph vessel structure. With joint expertise in immunology, microfluidics, and bioreactors, the technology may contribute to the mechanistic assay of human immune response in vitro and functional replacement.

Original languageEnglish (US)
Pages (from-to)22142-22149
Number of pages8
JournalACS Applied Materials and Interfaces
Volume13
Issue number19
DOIs
StatePublished - May 19 2021

Keywords

  • alginate
  • cell-laden fibers
  • coaxial spinning
  • lymph vessel
  • Plateau-Rayleigh instability

ASJC Scopus subject areas

  • Materials Science(all)

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