Casadevall Lab
Exploring the Fundamental Principles Underlying Microbial Virulence Mechanisms and Host Cell Defenses
The Casadevall Laboratory is a multidisciplinary research group exploring a wide range of questions in microbiology, immunology, and philosophy of science.
Our research focuses on two fundamental questions: First, how do microbes cause disease? Second, how do hosts, such as humans, protect themselves against microbes? To address these important questions, the laboratory takes a multidisciplinary approach, employing molecular biology, biochemistry, immunology, and microbiology.
A major focus of the laboratory are fungal species, including Candida auris, Cryptococcus neoformans, and Cryptococcus gattii, along with other ubiquitous environmental microbes that frequently cause disease in individuals with impaired immunity. Cryptococcal species cause lung infection, including a particularly dangerous fungal meningitis observed primarily in immune-compromised patients such as those with AIDS. The emerging fungal pathogen, C. auris, is also known to cause human infection and disease. All of these fungal species exhibit antimicrobial resistance. Many of the laboratory’s projects seek to understand how hosts defend against these organisms and how their virulence mechanisms contribute to disease.
Research Interests
Pathogenesis and immune response to fungal pathogens
Role of Melanin in infectious diseases
Antibody-mediated catalysis and the immune response
Fungal evolution
C. neoformans engulfed by a macrophage
Host-pathogen Interaction
We study interactions between C. neoformans and host macrophages in culture and using animal infection models.
Electron micrograph of capsular polysaccharide
Cryptococcal Polysaccharide
We characterize the polysaccharide capsule biophysically and develop conjugate vaccines based on capsular antigens.
Cryptococcal cells with melanized cell walls
Biology of Melanin
We study the biosynthesis of fungal and insect melanin and characterize its protective roles during infection.
Contact Information
Casadevall Lab
Arturo Casadevall, MD, PhD, Bloomberg Distinguished Professor
Alfred and Jill Sommer Professor and Chair
Department of Molecular Microbiology & Immunology
Johns Hopkins Bloomberg School of Public Health
615 N. Wolfe Street
E5132 (office); W5704(lab)
Baltimore, MD 21205
410-955-3457 (office)
acasade1@jh.edu