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A gene network engineering platform for lactic acid bacteria.

Wentao Kong1, Venkata S Kapuganti2, Ting Lu3

  • 1Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.

Nucleic Acids Research
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Summary
This summary is machine-generated.

Synthetic biology enables rapid engineering of lactic acid bacteria (LAB) gene networks. A new platform facilitates efficient construction and optimization of complex genetic circuits in LAB for diverse applications.

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Area of Science:

  • Synthetic Biology
  • Microbiology

Background:

  • Lactic acid bacteria (LAB) are key cellular chassis in synthetic biology.
  • Efficient engineering of complex gene networks is crucial for realizing LAB's full potential.

Purpose of the Study:

  • To develop a synthetic biology platform for rapid construction and optimization of large-scale gene networks in LAB.
  • To demonstrate the platform's utility in expanding phenotypic diversity and altering regulatory topologies.

Main Methods:

  • A copy-controlled shuttle system for hosting gene networks.
  • Strategies for efficient genetic editing and phenotypic validation.
  • Application to nisin biosynthesis pathway engineering.

Main Results:

  • Demonstrated multiplex, continuous editing of DNA parts and manipulation of large genetic blocks.
  • Generated a library of 63 nisin pathway variants, expanding phenotypic diversity.
  • Successfully altered nisin pathway topology for constitutive bacteriocin biosynthesis.

Conclusions:

  • The platform enables rapid and advanced engineering of gene networks in LAB.
  • Facilitates diverse applications of LAB in biomedicine and beyond.