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Biotechnol J. 2015 Sep;10(9):1360-9. doi: 10.1002/biot.201400422. Epub 2015 Apr 13.

Dynamic metabolic engineering: New strategies for developing responsive cell factories.

Author information

1
Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA.
2
Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA. kljp@mit.edu.

Abstract

Metabolic engineering strategies have enabled improvements in yield and titer for a variety of valuable small molecules produced naturally in microorganisms, as well as those produced via heterologous pathways. Typically, the approaches have been focused on up- and downregulation of genes to redistribute steady-state pathway fluxes, but more recently a number of groups have developed strategies for dynamic regulation, which allows rebalancing of fluxes according to changing conditions in the cell or the fermentation medium. This review highlights some of the recently published work related to dynamic metabolic engineering strategies and explores how advances in high-throughput screening and synthetic biology can support development of new dynamic systems. Dynamic gene expression profiles allow trade-offs between growth and production to be better managed and can help avoid build-up of undesired intermediates. The implementation is more complex relative to static control, but advances in screening techniques and DNA synthesis will continue to drive innovation in this field.

KEYWORDS:

Gene expression; Metabolic engineering; Metabolite sensors; Synthetic biology

PMID:
25868062
PMCID:
PMC4629492
DOI:
10.1002/biot.201400422
[Indexed for MEDLINE]
Free PMC Article

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