Lookup NU author(s): Professor Martyn Dade-Robertson,
Dr Helen Mitrani,
Dr Luis Hernandez-Hernandez,
Dr Aurelie Guyet,
Professor Anil Wipat
This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).
In this paper, we describe the first steps in the design of a synthetic biological system based on the use of genetically modified bacteria to detect elevated pressures in soils and respond by cementing soil particles. Such a system might, for example, enable a self‐ constructed foundation to form in response to load using engineered bacteria which could be seeded and grown in the soils. This process would reduce the need for large‐scale excavations and may be the basis for a new generation of self‐assembling and responsive bio‐based materials. A prototype computational model is presented which integrates experimental data from a pressure sensitive gene within Escherichia coli bacteria with geotechnical models of soil loading and pore water pressure. The results from the integrated model are visualised by mapping expected gene expression values onto the soil volume. We also use our experimental data to design a two component system where one type of bacteria acts as a sensor and signals to another material synthesis bacteria. The simulation demonstrates the potential of computational models which integrate multiple scales from macro stresses in soils to the expression of individual genes to inform new types of design process. The work also illustrates the combination of in silico (silicon based computing) computation with in vivo (in the living) computation.
Author(s): Dade-Robertson M, Mitrani H, Rodriguez-Corral J, Zhang M, Hernan L, Guyet A, Wipat A
Publication type: Article
Publication status: Published
Journal: Bioinspiration & Biomimetics
Print publication date: 24/05/2018
Online publication date: 13/04/2018
Acceptance date: 13/04/2018
Date deposited: 21/05/2018
ISSN (print): 1748-3182
ISSN (electronic): 1748-3190
Publisher: Institute of Physics Publishing Ltd.
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