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Proteomic and transcriptomic analysis of Aspergillus fumigatus on exposure to amphotericin B

Poonam Gautam1, Jata Shankar, Taruna Madan

  • 1Innate Immunity, National Institute for Research in Reproductive Health, JM Street, Parel, Mumbai, India. taruna_m@hotmail.com

Antimicrobial Agents and Chemotherapy
|October 8, 2008
PubMed

Insights

Amphotericin B (AMB) targets molecular pathways in Aspergillus fumigatus. This study identified differentially expressed genes and proteins, revealing potential new targets for antifungal drug development.

Area of Science:

  • Mycology
  • Molecular Biology
  • Pharmacology

Background:

  • Amphotericin B (AMB) is a primary antifungal agent for systemic infections.
  • Understanding AMB's molecular targets in Aspergillus fumigatus is crucial for improving treatments.

Purpose of the Study:

  • To elucidate the molecular targets of AMB in Aspergillus fumigatus using transcriptomic and proteomic analyses.
  • To identify novel drug targets for combating invasive fungal infections.

Main Methods:

  • Genomic and proteomic approaches were employed to analyze gene and protein expression profiles.
  • Differential gene expression was assessed via transcriptomics, and protein expression via proteomics.
  • Real-time reverse transcription-PCR was used to validate findings.

Main Results:

  • 295 genes and 85 proteins showed differential expression in response to AMB.
  • Key affected pathways include ergosterol biosynthesis, cell stress, and cell wall components.
  • Novelly identified responsive proteins include Rho-GDI, secretory-pathway GDI, clathrin, Sec 31, and RAB GTPase Ypt51.

Conclusions:

  • AMB induces significant changes in gene and protein expression in Aspergillus fumigatus.
  • Several identified differentially expressed genes and proteins represent potential novel targets for antifungal drug development.
  • Further exploration of these targets could lead to new therapeutic strategies against fungal infections.

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