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Molecular and Genetic Mechanisms That Mediate Transmission of Yersinia pestis by Fleas

B Joseph Hinnebusch1, Clayton O Jarrett1, David M Bland1

  • 1Laboratory of Bacteriology, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Hamilton, MT 59840, USA.

Biomolecules
|February 6, 2021
PubMed

Insights

Yersinia pestis causes plague by adapting to flea guts, forming biofilms that block feeding. This leads to regurgitative transmission, a key factor in plague

Area of Science:

  • Microbiology
  • Infectious Diseases
  • Vector Biology

Background:

  • Yersinia pestis causes plague in mammals and infects the digestive tract of fleas.
  • Understanding Y. pestis-flea interactions is crucial for identifying transmission mechanisms.

Purpose of the Study:

  • To review the molecular mechanisms and factors involved in Yersinia pestis colonization and transmission by fleas.
  • To highlight the role of biofilm development in the flea gut for Y. pestis transmission.

Main Methods:

  • Review of existing literature on Yersinia pestis-flea interactions.
  • Identification and characterization of genes, regulatory pathways, and molecules involved in flea gut colonization and biofilm formation.

Main Results:

  • Yersinia pestis adapts to the flea gut environment by altering metabolic physiology.
  • Biofilm formation in the flea foregut disrupts blood feeding, leading to regurgitative transmission.
  • Key genes, pathways, and molecules facilitating this process have been identified.

Conclusions:

  • Flea gut colonization and biofilm development are critical for Yersinia pestis transmission.
  • Further research into these factors can inform strategies to control plague transmission.
Keywords:
Yersinia pestisarthropod-borne transmissionfleasplague

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