Reversed-engineered human alveolar lung-on-a-chip model.
Proc Natl Acad Sci U S A
; 118(19)2021 05 11.
Article
in En
| MEDLINE
| ID: mdl-33941687
Here, we present a physiologically relevant model of the human pulmonary alveoli. This alveolar lung-on-a-chip platform is composed of a three-dimensional porous hydrogel made of gelatin methacryloyl with an inverse opal structure, bonded to a compartmentalized polydimethylsiloxane chip. The inverse opal hydrogel structure features well-defined, interconnected pores with high similarity to human alveolar sacs. By populating the sacs with primary human alveolar epithelial cells, functional epithelial monolayers are readily formed. Cyclic strain is integrated into the device to allow biomimetic breathing events of the alveolar lung, which, in addition, makes it possible to investigate pathological effects such as those incurred by cigarette smoking and severe acute respiratory syndrome coronavirus 2 pseudoviral infection. Our study demonstrates a unique method for reconstitution of the functional human pulmonary alveoli in vitro, which is anticipated to pave the way for investigating relevant physiological and pathological events in the human distal lung.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pulmonary Alveoli
/
Lab-On-A-Chip Devices
/
Models, Biological
Limits:
Humans
Language:
En
Journal:
Proc Natl Acad Sci U S A
Year:
2021
Document type:
Article
Country of publication:
United States