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A Droplet Microfluidics Based Platform for Mining Metagenomic Libraries for Natural Compounds.

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This study introduces a new platform using bacteria and microfluidics to find natural compounds. It enables efficient screening of environmental DNA for therapeutic compounds in mammalian cells.

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Area of Science:

  • Microbiology
  • Molecular Biology
  • Bioengineering

Background:

  • Environmental microbes are a source of novel bioactive compounds.
  • Metagenomic libraries offer access to a wider range of compounds.
  • Current methods limit the use of metagenomic libraries in mammalian cell applications.

Purpose of the Study:

  • To develop an integrated platform for mining natural resources for pro-apoptotic compounds.
  • To enable high-throughput screening of metagenomic libraries in mammalian cells.
  • To overcome limitations of existing compound extraction and screening methods.

Main Methods:

  • Utilized invasive Escherichia coli as a delivery vehicle for natural compounds.
  • Employed droplet microfluidics for bacterial clone amplification and high-throughput screening.
  • Developed a cell aggregate strategy to mitigate background apoptosis in assays.

Main Results:

  • Demonstrated efficient delivery of natural compounds using modified E. coli.
  • Successfully screened metagenomic libraries with mammalian cell assays without laborious extraction.
  • Achieved high-throughput clonal screening and reduced background apoptosis.

Conclusions:

  • The developed platform integrates bacterial delivery and droplet microfluidics for efficient mining of the metagenome.
  • This approach facilitates the discovery of therapeutic compounds with potential applications in medicine.
  • The platform provides a versatile tool for exploring natural resources for drug discovery.