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Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...
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Combinatorial and high-throughput screening approaches for strain engineering.

Wenshan Liu1, Rongrong Jiang

  • 1School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore.

Applied Microbiology and Biotechnology
|January 31, 2015
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Summary
This summary is machine-generated.

Combinatorial engineering tools enhance microbial production of biochemicals. Integrating these methods with high-throughput screening improves microorganism performance and yields.

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Area of Science:

  • Industrial microbiology
  • Synthetic biology
  • Metabolic engineering

Background:

  • Microbes are essential for industrial biochemical production.
  • New strain engineering tools, derived from inverse metabolic engineering, are emerging.
  • Combinatorial engineering approaches are gaining traction.

Purpose of the Study:

  • To review recent advancements in combinatorial engineering tools for microbial strain improvement.
  • To highlight the synergy between combinatorial approaches and high-throughput screening methods.
  • To discuss the potential of these integrated strategies for enhancing biochemical yields and stress tolerance.

Main Methods:

  • Genome shuffling
  • Error-prone DNA polymerase
  • Global transcription machinery engineering (gTME)
  • Random knockout/overexpression libraries
  • Ribosome engineering
  • Multiplex automated genome engineering (MAGE)
  • Customized optimization of metabolic pathways by combinatorial transcriptional engineering (COMPACTER)
  • Tunable intergenic regions (TIGR) library construction
  • Color/fluorescence-based, growth-based, and biosensor-based high-throughput screening

Main Results:

  • A comprehensive overview of various combinatorial engineering tools is presented.
  • The critical role of high-throughput screening in conjunction with these tools is emphasized.
  • The potential for significant improvements in microorganism performance is discussed.

Conclusions:

  • Metabolic engineering tools combined with novel combinatorial approaches and effective high-throughput screening can significantly enhance microorganism performance.
  • These integrated strategies offer promising avenues for improving biochemical yields and microbial stress tolerance in industrial applications.