A machine learning approach to predict metabolic pathway dynamics from time-series multiomics data

• Published in: NPJ systems biology and applications Vol. 4; no. 1; pp. 19 - 14
• Main Authors: Costello, Zak, Martin, Hector Garcia
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 29.05.2018; Nature Publishing Group; Springer Nature
• Subjects: 631/553/2393; 631/553/2701; 631/553/318; 631/553/552; Artificial intelligence; BASIC BIOLOGICAL SCIENCES; Bioinformatics; Biomedical and Life Sciences; Computational Biology/Bioinformatics; Computer Appl. in Life Sciences; Genotypes; Learning algorithms; Life Sciences; Metabolomics; Proteomics; Systems Biology
• ISSN: 2056-7189; 2056-7189
• DOI: 10.1038/s41540-018-0054-3

New synthetic biology capabilities hold the promise of dramatically improving our ability to engineer biological systems. However, a fundamental hurdle in realizing this potential is our inability to accurately predict biological behavior after modifying the corresponding genotype. Kinetic models have traditionally been used to predict pathway dynamics in bioengineered systems, but they take significant time to develop, and rely heavily on domain expertise. Here, we show that the combination of machine learning and abundant multiomics data (proteomics and metabolomics) can be used to effectively predict pathway dynamics in an automated fashion. The new method outperforms a classical kinetic model, and produces qualitative and quantitative predictions that can be used to productively guide bioengineering efforts. This method systematically leverages arbitrary amounts of new data to improve predictions, and does not assume any particular interactions, but rather implicitly chooses the most predictive ones. Using artificial intelligence to predict biological dynamics New synthetic biology capabilities (e.g. CRISPR) dramatically improve our ability to engineer biological systems for the benefit of society (biofuels, medical drugs). However, this effort is hampered because we cannot reliably predict the outcome of our bioengineering efforts. Mathematical kinetic models have been traditionally used to predict pathway dynamics, but they take a long time to develop and require significant biological expertize. Here, we substitute traditional kinetic models with a machine learning approach that is able to learn pathway dynamics straight from data examples. This new approach can be systematically applied to any product, pathway or host and significantly speeds up bioengineering.