Temporally controlled multistep division of DNA droplets for dynamic artificial cells

Tomoya Maruyama, Jing Gong and Masahiro Takinoue ()
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Tomoya Maruyama: Midori-ku
Jing Gong: Midori-ku
Masahiro Takinoue: Midori-ku

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract Synthetic droplets mimicking bio-soft matter droplets formed via liquid-liquid phase separation (LLPS) in living cells have recently been employed in nanobiotechnology for artificial cells, molecular robotics, molecular computing, etc. Temporally controlling the dynamics of synthetic droplets is essential for developing such bio-inspired systems because living systems maintain their functions based on the temporally controlled dynamics of biomolecular reactions and assemblies. This paper reports the temporal control of DNA-based LLPS droplets (DNA droplets). We demonstrate the timing-controlled division of DNA droplets via time-delayed division triggers regulated by chemical reactions. Controlling the release order of multiple division triggers results in order control of the multistep droplet division, i.e., pathway-controlled division in a reaction landscape. Finally, we apply the timing-controlled division into a molecular computing element to compare microRNA concentrations. We believe that temporal control of DNA droplets will promote the design of dynamic artificial cells/molecular robots and sophisticated biomedical applications.

Date: 2024
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DOI: 10.1038/s41467-024-51299-5

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