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Related Concept Videos

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Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
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Global proteomic analysis of <i>Cryptococcus neoformans</i> clinical strains reveals significant differences between latent and lethal infection.

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Insights from Mass Spectrometry-Based Proteomics on Cryptococcus neoformans.

Jovany Jordan Betancourt1, Kirsten Nielsen1,2

  • 1Department of Microbiology and Immunology, University of Minnesota, Minneapolis, MN 55455, USA.

Journal of Fungi (Basel, Switzerland)
|September 23, 2025
PubMed
Summary

Proteomics reveals insights into Cryptococcus neoformans virulence and host responses, aiding the development of new diagnostics and treatments for cryptococcal meningitis (CM). This research addresses critical needs for effective antifungal strategies against this opportunistic pathogen.

Keywords:
Cryptococcus neoformanscryptococcosishost–pathogen interactionsimmune responseproteomics

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Area of Science:

  • * Medical Mycology
  • * Infectious Diseases
  • * Proteomics

Background:

  • * Cryptococcus neoformans is a critical opportunistic fungal pathogen causing cryptococcosis and cryptococcal meningitis (CM).
  • * CM is a leading cause of mortality in AIDS patients, with high mortality rates (13-78%) and growing antifungal resistance.
  • * Current treatments are limited by long-term high-dose antifungals and C. neoformans' complex virulence factors.

Purpose of the Study:

  • * To explore host-Cryptococcus proteomes using mass spectrometry-based proteomics.
  • * To identify clinically relevant proteins, pathways, and antigens for improved diagnostics and therapeutics.
  • * To understand host defense mechanisms against C. neoformans.

Main Methods:

  • * Mass spectrometry-based proteomics was employed to analyze host-pathogen interactions.
  • * Proteomic data was used to investigate C. neoformans virulence factors, metabolism, and host responses.

Main Results:

  • * Proteomics provided insights into C. neoformans biology and cryptococcal disease mechanisms.
  • * Identified target proteins and pathways involved in fungal virulence and host defense.

Conclusions:

  • * Proteomics is invaluable for understanding complex host-pathogen interactions in cryptococcosis.
  • * Further proteomic studies can facilitate the development of novel clinical tools for detecting, diagnosing, and treating C. neoformans infections.
  • * This approach aids in overcoming challenges posed by antifungal resistance and high CM mortality.