2022
DOI: 10.1038/s41467-022-29562-4
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Mechanical control of innate immune responses against viral infection revealed in a human lung alveolus chip

Abstract: Mechanical breathing motions have a fundamental function in lung development and disease, but little is known about how they contribute to host innate immunity. Here we use a human lung alveolus chip that experiences cyclic breathing-like deformations to investigate whether physical forces influence innate immune responses to viral infection. Influenza H3N2 infection of mechanically active chips induces a cascade of host responses including increased lung permeability, apoptosis, cell regeneration, cytokines p… Show more

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Cited by 57 publications
(59 citation statements)
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“…This platform was found to be useful in preclinical drug testing and screening. Recently, Bai et al were able to demonstrate physiological correlation between the mechanical breathing motions of lung tissues with host innate immunity using a human lung alveolus chip that experiences cyclic breathing-like deformations [ 20 ]. This marked a major advancement in the field when compared with static OOAC platforms as it revealed that breathing motions could suppress viral replication by activating protective innate immune responses in epithelial and endothelial cells [ 20 ].…”
Section: Types Of Ooac Devicesmentioning
confidence: 99%
“…This platform was found to be useful in preclinical drug testing and screening. Recently, Bai et al were able to demonstrate physiological correlation between the mechanical breathing motions of lung tissues with host innate immunity using a human lung alveolus chip that experiences cyclic breathing-like deformations [ 20 ]. This marked a major advancement in the field when compared with static OOAC platforms as it revealed that breathing motions could suppress viral replication by activating protective innate immune responses in epithelial and endothelial cells [ 20 ].…”
Section: Types Of Ooac Devicesmentioning
confidence: 99%
“…Fluid shear stress and other mechanical forces, such as lung rhythmic breathing motions, can be introduced. Moreover, immune cells can be perfused through the vascular channel [ 29 , 56 ] ( Figure 1 C). This model has been optimized and utilized for studies on respiratory diseases, including CF, COPD, and lung infections [ 14 , 29 , 57 , 58 ].…”
Section: Lung 3d Culturesmentioning
confidence: 99%
“…Moreover, immune cells can be perfused through the vascular channel [ 29 , 56 ] ( Figure 1 C). This model has been optimized and utilized for studies on respiratory diseases, including CF, COPD, and lung infections [ 14 , 29 , 57 , 58 ]. Additional respiratory organ-on-chips with slightly different structures have been built by other groups.…”
Section: Lung 3d Culturesmentioning
confidence: 99%
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“…Influenza infection activates a number of host pathways, including the innate and adaptive immune responses, the induction of cytokines, and the activation of apoptosis [ 4 ]. The detection of viral particles (in particular nuclear acids) by toll-like receptors (TLR7) of the MyD88, NF-kB pathway [ 5 ], as well as cytosolic proteins such as RIG-I (DDX58) of the MDAF/MAVS pathway and their trigger of interferon expression via the activation of transcription factors including IRF3 and IRF7 [ 6 , 7 ], have been well studied.…”
Section: Introductionmentioning
confidence: 99%