Interplay of Cytokines and Chemokines in Aspergillosis

Interplay of Cytokines and Chemokines in Aspergillosis

27 March 2024 | Jata Shankar, Raman Thakur, Karl V. Clemons, David A. Stevens
The article discusses the interplay of cytokines and chemokines in aspergillosis, a fungal infection caused by various Aspergillus species, particularly A. fumigatus. It highlights the role of pathogen-associated molecular patterns (PAMPs) and pathogen recognition receptors (PRRs) in the immune response to Aspergillus. PAMPs, such as glucan, galactomannan, and mannose, are recognized by PRRs like TLRs and C-type lectins, triggering the production of pro-inflammatory cytokines and chemokines. These molecules recruit immune cells, stimulate antimicrobial peptides, and aid in fungal clearance. The immune response varies depending on the type of aspergillosis, with allergic bronchopulmonary aspergillosis (ABPA) involving Th2 and Th9 cell-type immunity, while invasive aspergillosis involves Th1 and Th17 cell-type immunity. Cytokines like IFN-γ, TNF-α, IL-1, IL-6, and IL-17 activate immune cells and promote fungal clearance. Chemokines such as CCR4, CCR17, and CCL22 are involved in recruiting immune cells to the site of infection. The study also discusses the role of chitin and β-glucan in Aspergillus pathogenesis and their recognition by immune cells. The article emphasizes the importance of understanding cytokine and chemokine responses in aspergillosis for developing targeted immunotherapeutic strategies. It highlights the complex interactions between the host immune system and Aspergillus, and the potential for modulating these responses to improve treatment outcomes. The review underscores the significance of cytokines in both human and animal studies, and their potential in personalized medicine for aspergillosis.The article discusses the interplay of cytokines and chemokines in aspergillosis, a fungal infection caused by various Aspergillus species, particularly A. fumigatus. It highlights the role of pathogen-associated molecular patterns (PAMPs) and pathogen recognition receptors (PRRs) in the immune response to Aspergillus. PAMPs, such as glucan, galactomannan, and mannose, are recognized by PRRs like TLRs and C-type lectins, triggering the production of pro-inflammatory cytokines and chemokines. These molecules recruit immune cells, stimulate antimicrobial peptides, and aid in fungal clearance. The immune response varies depending on the type of aspergillosis, with allergic bronchopulmonary aspergillosis (ABPA) involving Th2 and Th9 cell-type immunity, while invasive aspergillosis involves Th1 and Th17 cell-type immunity. Cytokines like IFN-γ, TNF-α, IL-1, IL-6, and IL-17 activate immune cells and promote fungal clearance. Chemokines such as CCR4, CCR17, and CCL22 are involved in recruiting immune cells to the site of infection. The study also discusses the role of chitin and β-glucan in Aspergillus pathogenesis and their recognition by immune cells. The article emphasizes the importance of understanding cytokine and chemokine responses in aspergillosis for developing targeted immunotherapeutic strategies. It highlights the complex interactions between the host immune system and Aspergillus, and the potential for modulating these responses to improve treatment outcomes. The review underscores the significance of cytokines in both human and animal studies, and their potential in personalized medicine for aspergillosis.
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[slides and audio] Interplay of Cytokines and Chemokines in Aspergillosis