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The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
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Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption
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Engineering

Gozde Gencer1, Christopher Mancuso2, Koon Jiew Chua3

  • 1Biological and Environmental Engineering Department, Cornell University, Ithaca, NY, United States.

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|June 8, 2023
PubMed
Summary
This summary is machine-generated.

Engineered E. coli can monitor and lower uric acid levels in the gut, offering a novel approach for managing hyperuricemia and related diseases without drug side effects.

Keywords:
Bacillusgoutprobioticpumpsink accumulationurate oxidase

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Area of Science:

  • Synthetic Biology
  • Microbial Engineering
  • Gastroenterology

Background:

  • Uric acid imbalance is linked to chronic diseases, but current monitoring and treatment strategies for hyperuricemia are insufficient.
  • Drug therapies for hyperuricemia can cause adverse effects, highlighting the need for alternative management approaches.
  • The intestinal tract is crucial for regulating serum uric acid levels, presenting a potential target for therapeutic intervention.

Purpose of the Study:

  • To engineer commensal Escherichia coli for the diagnosis and long-term management of hyperuricemia.
  • To develop a bioreporter system for detecting uric acid concentration in the intestinal lumen.
  • To create a uric acid degradation module for reducing excess uric acid levels.

Main Methods:

  • Constructed a bioreporter in E. coli using a synthetic promoter (pucpro) and a uric acid binding protein (PucR).
  • Designed a uric acid degradation module overexpressing an E. coli uric acid transporter and B. subtilis urate oxidase.
  • Utilized an in vitro Caco-2 cell model to simulate the human intestinal environment for testing engineered E. coli.

Main Results:

  • The engineered bioreporter detected uric acid concentration in a dose-dependent manner.
  • Engineered E. coli strains degraded 250 µM of uric acid within 24 hours, significantly outperforming wild-type E. coli.
  • Engineered E. coli reduced apical uric acid concentration by 40.35% in an in vitro intestinal model.

Conclusions:

  • Reprogrammed E. coli demonstrates potential as a synthetic biology therapy for monitoring and maintaining healthy serum uric acid levels.
  • Engineered commensal bacteria offer a promising alternative to drug-based treatments for hyperuricemia, minimizing side effects.
  • This approach provides a novel strategy for the diagnosis and long-term management of chronic hyperuricemia-related diseases.