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Microbial pathogenesis meets biomechanics.

Arthur Charles-Orszag1, Emmanuel Lemichez2, Guy Tran Van Nhieu3

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Soft matter physics principles illuminate bacterial pathogenesis, revealing how pathogens like Shigella flexneri and Neisseria meningitidis exploit host cell mechanics for infection. This interdisciplinary approach is crucial for understanding infectious diseases.

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Area of Science:

  • Biophysics
  • Microbiology
  • Cell Biology

Background:

  • Soft matter physics and mechanics offer valuable insights into biological processes.
  • Bacterial pathogenesis involves complex interactions between pathogens and host cells.

Purpose of the Study:

  • To review how principles from soft matter physics can explain bacterial pathogenesis.
  • To highlight the necessity of a multidisciplinary approach integrating physics and biology for understanding infectious diseases.

Main Methods:

  • Review of existing literature on bacterial pathogens and host cell interactions.
  • Analysis of three case studies: Shigella flexneri, Neisseria meningitidis, and bacterial toxins.

Main Results:

  • Shigella flexneri utilizes actin-dependent forces for host cell invasion.
  • Neisseria meningitidis manipulates endothelial cells to withstand shear stress in vascular colonization.
  • Bacterial toxins exploit host cell membrane biophysics to create transcellular macroapertures.

Conclusions:

  • A multidisciplinary approach combining physics and biology is essential for understanding complex infectious phenomena.
  • Studying pathogen-host interactions can reveal general cell biology processes relevant to non-communicable diseases.