Skip Navigation

W. Harry Feinstone Department of Molecular Microbiology and Immunology


cryptococcusThe department's mycology program has a major focus on Cryptococcus neoformans, a ubiquitous environmental microbe frequently affecting individuals with impaired immunity.

Fungi became major pathogens in the 20th century and are today major causes of mortality and morbidity, especially in individuals with impaired immunity.  A major research area of the department is focused on understanding the ecology and pathogenesis of Cryptococcus neoformans. This ubiquitous environmental microbe frequently affects individuals with impaired immunity, causing lung infection, including a particularly dangerous fungal meningitis.


The research program of Dr. Casadevall’s laboratory seeks to elucidate host defenses against C. neoformans, and how the fungus’ virulence contributes to disease. One aspect of this research is C. neoformans melanin production and how it relates to virulence. Melanin, a pigment of undefined chemical structure and with a tremendous physical stability, accumulates in the cell wall of C. neoformans and enables growth and budding. Dr. Casadevall’s laboratory is also interested in targeting melanin for  the treatment of melanoma, a type of skin cancer, and in exploring the capacity of melanin in capturing electromagnetic radition, which may be used by fungi as a form of photosynthesis.