Airway-Associated Macrophages in Homeostasis and Repair.
Cell Rep
; 33(13): 108553, 2020 12 29.
Article
em En
| MEDLINE
| ID: mdl-33378665
ABSTRACT
There is an increasing appreciation for the heterogeneity of myeloid lineages in the lung, but relatively little is known about populations specifically associated with the conducting airways. We use single-cell RNA sequencing, flow cytometry, and immunofluorescence to characterize myeloid cells of the mouse trachea during homeostasis and epithelial injury/repair. We identify submucosal macrophages, similar to lung interstitial macrophages, and intraepithelial macrophages. Following injury, there are early increases in neutrophils and submucosal macrophages, including M2-like macrophages. Intraepithelial macrophages are lost after injury and later restored by CCR2+ monocytes. We show that repair of the tracheal epithelium is impaired in Ccr2-deficient mice. Mast cells and group 2 innate lymphoid cells are sources of interleukin-13 (IL-13) that polarize macrophages and directly influence basal cell behaviors. Their proximity to the airway epithelium establishes these myeloid populations as potential therapeutic targets for airway disease.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Traqueia
/
Macrófagos Alveolares
/
Células Mieloides
/
Células Epiteliais
/
Epitélio
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Receptores CCR2
/
Homeostase
Tipo de estudo:
Risk_factors_studies
Limite:
Animals
Idioma:
En
Revista:
Cell Rep
Ano de publicação:
2020
Tipo de documento:
Article