Nano-structure of vitronectin/heparin on cell membrane for stimulating single cell in iPSC-derived embryoid body

• Published in: iScience Vol. 24; no. 4; p. 102297
• Main Authors: Han, Uiyoung, Kim, Wijin, Cha, Hyeonjin, Park, Ju Hyun, Hong, Jinkee
• Format: Journal Article
• Language: English
• Published: United States Elsevier Inc 23-04-2021; Elsevier
• Subjects: Cell Engineering; Nanotechnology; Stem Cells Research; Cell Engineering; Stem Cells Research; Nanotechnology
• ISSN: 2589-0042; 2589-0042
• DOI: 10.1016/j.isci.2021.102297

Individual cell environment stimulating single cell is a suitable strategy for the generation of sophisticated multicellular aggregates with localized biochemical signaling. However, such strategy for induced pluripotent stem cell (iPSC)-derived embryoid bodies (EBs) is limited because the presence of external stimulation can inhibit spontaneous cellular communication, resulting in misdirection in the maturation and differentiation of EBs. In this study, a facile method of engineering the iPSC membrane to stimulate the inner cell of EBs while maintaining cellular activities is reported. We coated the iPSC surface with nanoscale extracellular matrix fabricated by self-assembly between vitronectin and heparin. This nano-coating allowed iPSC to retain its in vitro properties including adhesion capability, proliferation, and pluripotency during its aggregation. More importantly, the nano-coating did not induce lineage-specific differentiation but increased E-cadherin expression, resulting in promotion of development of EB. This study provides a foundation for future production of sophisticated patient-specific multicellular aggregates by modification of living cell membranes.
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•VTN/HEP nano-coating acts as a flexible individual cellular environment•VTN/HEP nano-coating stimulates embryoid body to promote its development•VTN/HEP nano-coating preserves spontaneous cell aggregation