Programmable and printable Bacillus subtilis biofilms as engineered living materials
Name
Pages from HuangJFNCB.s41589-018-0169-2-2.pdf
Description
Accepted version
Size
3.6 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Huang, Jiaofang
Lui, Suying
Zhang, Chen
Wang, Xinyu
Pu, Jiahua
Ba, Fang
Xie, Shuai
Ye, Haifeng
Zhao, Tianxin
Li, Ke
Date Issued
January 2019
Journal
Nature Chemical Biology
Publisher
Springer Nature
Citation
Huang, Jiaofang, Suying Liu, Chen Zhang et al. "Programmable and printable Bacillus subtilis biofilms as engineered living materials." Nature Chemical Biology, 15 (2019):34-41. © 2018, The Author(s).
Version
Author's final manuscript
Abstract
Bacterial biofilms can be programmed to produce living materials with self-healing and evolvable functionalities. However, the wider use of artificial biofilms has been hindered by limitations on processability and functional protein secretion capacity. We describe a highly flexible and tunable living functional materials platform based on the TasA amyloid machinery of the bacterium Bacillus subtilis. We demonstrate that genetically programmable TasA fusion proteins harboring diverse functional proteins or domains can be secreted and can assemble into diverse extracellular nano-architectures with tunable physicochemical properties. Our engineered biofilms have the viscoelastic behaviors of hydrogels and can be precisely fabricated into microstructures having a diversity of three-dimensional (3D) shapes using 3D printing and microencapsulation techniques. Notably, these long-lasting and environmentally responsive fabricated living materials remain alive, self-regenerative, and functional. This new tunable platform offers previously unattainable properties for a variety of living functional materials having potential applications in biomaterials, biotechnology, and biomedicine.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
Massachusetts Institute of Technology. Department of Biological Engineering
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DOI of Published Version
https://doi.org/10.1038/S41589-018-0169-2
