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Pathogen-Mediated Cell Fusion and Actin Cytoskeleton

Malgorzata Kloc1,2

  • 1The Houston Methodist Research Institute, Transplant Immunology, Houston, TX, USA. mkloc@houstonmethodist.org.

Advances in Experimental Medicine and Biology
|May 21, 2026
PubMed

Insights

Pathogens induce cell fusion to spread and evade immune responses. This review highlights pathogen-mediated cell fusion mechanisms, focusing on the actin cytoskeleton

Area of Science:

  • Cell biology
  • Pathogen-host interactions
  • Molecular mechanisms

Background:

  • Cell fusion is essential for physiological processes like fertilization and development.
  • Pathological conditions, including inflammation, cancer, and infections, involve cell fusion.
  • Pathogens utilize cell fusion for propagation, immune evasion, and nutrient acquisition.

Purpose of the Study:

  • To review examples of pathogen-mediated cell fusion.
  • To elucidate the mechanisms behind pathogen-induced cell fusion.
  • To emphasize the role of the actin cytoskeleton and nucleation pathways.

Main Methods:

  • Literature review of pathogen-mediated cell fusion.
  • Analysis of molecular mechanisms involving the actin cytoskeleton.
  • Discussion of pathogen life cycles and fusion processes.

Main Results:

  • Pathogens employ diverse strategies to induce host cell fusion.
  • Actin cytoskeleton dynamics are critical for pathogen-mediated cell fusion.
  • Pathogen manipulation of actin nucleation pathways facilitates fusion.

Conclusions:

  • Pathogen-induced cell fusion is a significant virulence strategy.
  • Targeting actin dynamics presents potential therapeutic avenues.
  • Understanding these mechanisms is key to combating infectious diseases.
Keywords:
ActinBacteriumCell fusionFusogenParasitic nematodeSyncytiumVirus

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