Journal
ACS NANO
Volume 9, Issue 3, Pages 2677-2688Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn5064634
Keywords
graphene nanoribbon; flexible nanomembrane electronics; cell alignment; real-time monitoring; ceria nanoparticle; transfer printing; regenerative medicine
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Funding
- Basic Science Research Program of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT, and Future Planning [2012R1A1A1004925]
- Seoul National University Research Grant
- U.S. NSF CMMI [1301335]
- [IBS-R006-D1]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1301335] Funding Source: National Science Foundation
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While several functional platforms for cell culturing have been proposed for cell sheet engineering, a soft integrated system enabling in vitro physiological monitoring of aligned cells prior to their in vivo applications in tissue regeneration has not been reported. Here, we present a multifunctional, soft cell-culture platform equipped with ultrathin stretchable nanomembrane sensors and graphene-nanoribbon cell aligners, whose system modulus is matched with target tissues. This multifunctional platform is capable of aligning plated cells and in situ monitoring of cellular physiological characteristics during proliferation and differentiation. In addition, it is successfully applied as an in vitro muscle-on-a-chip testing platform. Finally, a simple but high-yield transfer printing mechanism is proposed to deliver cell sheets for scaffold-free, localized cell therapy in vivo. The muscle-mimicking stiffness of the platform allows the high-yield transfer printing of multiple cell sheets and results in successful therapies in diseased animal models. Expansion of current results to stem cells will provide unique opportunities for emerging classes of tissue engineering and cell therapy technologies.
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