Journal
MYCOPATHOLOGIA
Volume 183, Issue 1, Pages 213-226Publisher
SPRINGER
DOI: 10.1007/s11046-017-0229-2
Keywords
T cell; Fungal infection; Fungal pathogen; ABPA; ARTE; Cystic fibrosis
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Funding
- Cystic Fibrosis Foundation [SCHEFF15G0]
- German Federal Ministry of Education and Science (BMBF)-Project InfectControl [ART4Fun Fkz 03ZZ0813A]
- Christiane Herzog Stiftung, Stuttgart, Germany
- Mukoviszidose e.V., Bonn
- German Cystic Fibrosis Association
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Patients with cystic fibrosis (CF) suffer from chronic lung infections, caused by bacterial, viral or fungal pathogens, which determine morbidity and mortality. The contribution of individual pathogens to chronic disease and acute lung exacerbations is often difficult to determine due to the complex composition of the lung microbiome in CF. In particular, the relevance of fungal pathogens in CF airways remains poorly understood due to limitations of current diagnostics to identify the presence of fungal pathogens and to resolve the individual host-pathogen interaction status. T-lymphocytes play an essential role in host defense against pathogens, but also in inappropriate immune reactions such as allergies. They have the capacity to specifically recognize and discriminate the different pathogens and orchestrate a diverse array of effector functions. Thus, the analysis of the fungus-specific T cell status of an individual can in principle provide detailed information about the identity of the fungal pathogen(s) encountered and the actual fungus-host interaction status. This may allow to classify patients, according to appropriate (protective) or inappropriate (pathology-associated) immune reactions against individual fungal pathogens. However, T cell-based diagnostics are currently not part of the clinical routine. The identification and characterization of fungus-specific T cells in health and disease for diagnostic purposes are associated with significant challenges. Recent technological developments in the field of fungus-specific T helper cell detection provide new insights in the host T cell-fungus interaction. In this review, we will discuss basic principles and the potential of T cell-based diagnostics, as well as the perspectives and further needs for use of T cells for improved clinical diagnostics of fungal diseases.
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