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A Model of a Synthetic Biological Communication Interface between Mammalian Cells and Mechatronic Systems.

The creation of communication interfaces between abiotic and biotic systems represents a significant research challenge. In this work, we design and model a system linking the biochemical signaling pathways of mammalian cells to the actions of a mobile robotic prosthesis. We envision this system as a robotic platform carrying an optically monitored bioreactor that harbors mammalian cells. The cellular, optical signal is captured by an onboard fluorescent microscope and converted into an electronic signal. We first present a design for the overall cellrobot system, with a specific focus on the design of the synthetic gene networks needed for the system. We use these synthetic networks to encode motion commands within the cell's endogenous, oscillatory calcium signaling pathways. We then describe a potential system whereby this oscillatory signal could be outputted and monitored as a change in cellular fluorescence. Next, we use the changes resulting from the synthetic biological modifications as new parameters in a simulation of a wellestablished mathematical model for intracellular calcium signaling. The resulting signal is processed in the frequency domain, with specific frequencies activating cognate robot motion subroutines.

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