Related Experiment Video
Updated: Jun 13, 2025

Automated Measurement of Cryptococcal Species Polysaccharide Capsule and Cell Body
Published on: January 11, 2018
Cryptococcus
Sydney L Briner1, Tamara L Doering1
1Department of Molecular Microbiology, Washington University School of Medicine, Saint Louis, MO 63108, USA.
Abstract:
Fungal pathogens pose a significant threat to human health that is greatly underrecognized, despite causing several million deaths every year. To put it simply, the fight against these fungi is complicated. At baseline, there is a severe lack of effective and accessible antifungals, especially in regions with limited resources. Exacerbating the situation, many of these pathogens are opportunists that primarily affect immunocompromised individuals, which adds to the challenges of treatment. Another concern is that climate change selects for thermotolerance in environmental fungi, enhancing their ability to thrive at human body temperatures. This may not only intensify the danger of existing pathogens but also lead to the emergence of new ones. To focus attention on the serious and escalating threat of fungal pathogens, the World Health Organization has recently classified them into priority categories, designating Cryptococcus neoformans as "critical priority". In this primer, we will discuss the fundamental biology that makes C. neoformans such a notorious pathogen.
Insights
Fungal pathogens cause millions of deaths annually, with limited treatments and emerging threats from climate change. Cryptococcus neoformans is a critical priority pathogen requiring urgent attention.
Area of Science:
- Medical Mycology
- Infectious Diseases
- Public Health
Background:
- Fungal pathogens are a significant, underrecognized global health threat, causing millions of deaths yearly.
- Effective and accessible antifungal treatments are scarce, particularly in resource-limited regions.
- Opportunistic fungal infections primarily affect immunocompromised individuals, complicating treatment strategies.
Purpose of the Study:
- To highlight the escalating threat of fungal pathogens, emphasizing the need for greater recognition and research.
- To discuss the fundamental biology of Cryptococcus neoformans, a critical priority pathogen.
- To address challenges in combating fungal infections, including limited antifungals and climate change impacts.
Main Methods:
- This primer reviews existing literature on fungal pathogenesis and Cryptococcus neoformans biology.
- It synthesizes information on the impact of climate change on fungal thermotolerance.
- It discusses the World Health Organization's classification of priority fungal pathogens.
Main Results:
- Cryptococcus neoformans is identified as a critical priority pathogen by the WHO.
- Climate change is increasing fungal thermotolerance, potentially leading to new and intensified threats.
- The complexity of treating fungal infections is exacerbated by opportunistic behavior and limited therapeutic options.
Conclusions:
- Urgent attention and research are needed to combat the growing threat of fungal pathogens.
- Understanding the biology of pathogens like Cryptococcus neoformans is crucial for developing effective interventions.
- Addressing global health challenges posed by fungi requires improved antifungal accessibility and climate change mitigation strategies.
Related Concept Videos
Cystic Fibrosis: Pathogenesis
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
Pulmonary Tuberculosis IV
Several diagnostic approaches are used to detect TB. The conventional method is the Tuberculin Skin Test (TST), also known as the Mantoux test. However, this method has...
Pneumonia II: Pathophysiology
Pulmonary Tuberculosis III
The first classification is based on the development of the disease, and it includes the following categories:
Pneumonia I: Introduction
Risk Factors
Various factors influence the likelihood of developing pneumonia. Age plays a crucial role, with infants, children under two, and individuals over 65 at increased risk due to their...
Pulmonary Tuberculosis II
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...

