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Related Experiment Video

Updated: Dec 17, 2025

Enrichment of Mammalian Tissues and Xenopus Oocytes with Cholesterol
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Exploring the Bacterial Impact on Cholesterol Cycle: A Numerical Study.

Mélanie Bourgin1, Simon Labarthe2, Aicha Kriaa1

  • 1Micalis Institute, Université Paris-Saclay, INRAE, AgroParisTech, Jouy-en-Josas, France.

Frontiers in Microbiology
|June 27, 2020
PubMed
Summary

Gut bacteria significantly impact cholesterol levels by transforming cholesterol and bile salts. This study developed a human model showing microbial pathways are key for cholesterol regulation, suggesting new bacteria-based therapies.

Keywords:
cholesterol metabolismfunctional ecologyholobiontmathematical modelmicrobiomemicrobiotasystem biologywhole body model

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Area of Science:

  • Metabolic Engineering
  • Microbiology
  • Computational Biology

Background:

  • High blood cholesterol is linked to cardiovascular diseases.
  • Current therapies target host cholesterol synthesis or transport.
  • The gut microbiota influences cholesterol homeostasis through biotransformation.

Purpose of the Study:

  • To develop a whole-body human model of cholesterol metabolism incorporating gut microbiota.
  • To investigate the relative impact of host versus microbial pathways on cholesterol regulation.
  • To explore novel bacteria-based strategies for cholesterol management.

Main Methods:

  • Animal model for ingested cholesterol distribution.
  • In vitro bacterial growth and metabolite measurements.
  • Development and validation of a whole-body human metabolic model integrating host and microbial mechanisms.

Main Results:

  • Modeled bacterial population dynamics and bioconversion functions.
  • Integrated host and microbial pathways into a comprehensive cholesterol metabolism model.
  • Validated the model against animal experimental data.

Conclusions:

  • Bacterial pathways play a crucial role in regulating cholesterol turnover.
  • The developed model provides insights into host-microbiota interactions in cholesterol metabolism.
  • Findings support the development of novel bacteria-based strategies for managing cholesterol levels.