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Global gene expression profile of Yersinia pestis induced by streptomycin

Jingfu Qiu1, Dongsheng Zhou, Yanping Han

  • 1Laboratory of Analytical Microbiology, National Center for Biomedical Analysis, Army Center for Microbial Detection and Research, Institute of Microbiology and Epidemiology, Academy of Military Medical Sciences (AMMS), Beijing 100071, China.

FEMS Microbiology Letters
|February 3, 2005
PubMed

Insights

This study used DNA microarrays to analyze gene expression changes in Yersinia pestis when treated with streptomycin, revealing 345 differentially regulated genes. These findings offer new insights into streptomycin

Area of Science:

  • Microbiology
  • Genomics
  • Pharmacology

Background:

  • Plague, caused by Yersinia pestis, remains a significant threat.
  • Timely antibiotic treatment, primarily streptomycin, is crucial for managing plague.
  • Understanding Y. pestis's response to streptomycin is vital for effective treatment.

Purpose of the Study:

  • To investigate gene expression profile changes in Y. pestis upon streptomycin exposure.
  • To identify genes involved in the bacterium's response to streptomycin.
  • To uncover potential mechanisms of streptomycin action.

Main Methods:

  • Utilized DNA microarray technology to analyze Y. pestis gene expression.
  • Quantified differential gene regulation following streptomycin treatment.
  • Identified up-regulated and down-regulated genes.

Main Results:

  • Identified 345 differentially regulated genes (144 up, 201 down).
  • Observed streptomycin-induced changes in heat shock, drug sensitivity, amino acid biosynthesis, chemotaxis, and regulatory functions.
  • Noted down-regulation in genes related to energy metabolism and macromolecule synthesis/degradation.

Conclusions:

  • Results align with known streptomycin mechanisms and reveal novel responses.
  • Identified new candidate genes for studying streptomycin's specific action.
  • Provides a foundation for further research into Y. pestis streptomycin resistance and efficacy.

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