Human distal airways contain a multipotent secretory cell that can regenerate alveoli.
Journal
Nature
ISSN: 1476-4687
Titre abrégé: Nature
Pays: England
ID NLM: 0410462
Informations de publication
Date de publication:
04 2022
04 2022
Historique:
received:
03
02
2021
accepted:
14
02
2022
pubmed:
1
4
2022
medline:
19
4
2022
entrez:
31
3
2022
Statut:
ppublish
Résumé
The human lung differs substantially from its mouse counterpart, resulting in a distinct distal airway architecture affected by disease pathology in chronic obstructive pulmonary disease. In humans, the distal branches of the airway interweave with the alveolar gas-exchange niche, forming an anatomical structure known as the respiratory bronchioles. Owing to the lack of a counterpart in mouse, the cellular and molecular mechanisms that govern respiratory bronchioles in the human lung remain uncharacterized. Here we show that human respiratory bronchioles contain a unique secretory cell population that is distinct from cells in larger proximal airways. Organoid modelling reveals that these respiratory airway secretory (RAS) cells act as unidirectional progenitors for alveolar type 2 cells, which are essential for maintaining and regenerating the alveolar niche. RAS cell lineage differentiation into alveolar type 2 cells is regulated by Notch and Wnt signalling. In chronic obstructive pulmonary disease, RAS cells are altered transcriptionally, corresponding to abnormal alveolar type 2 cell states, which are associated with smoking exposure in both humans and ferrets. These data identify a distinct progenitor in a region of the human lung that is not found in mouse that has a critical role in maintaining the gas-exchange compartment and is altered in chronic lung disease.
Identifiants
pubmed: 35355013
doi: 10.1038/s41586-022-04552-0
pii: 10.1038/s41586-022-04552-0
pmc: PMC9297319
mid: NIHMS1802781
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
120-126Subventions
Organisme : NIDDK NIH HHS
ID : P30 DK072482
Pays : United States
Organisme : NHLBI NIH HHS
ID : K08 HL150226
Pays : United States
Organisme : NHLBI NIH HHS
ID : T32 HL007586
Pays : United States
Organisme : NHLBI NIH HHS
ID : K08 HL163398
Pays : United States
Organisme : NHLBI NIH HHS
ID : R35 HL135816
Pays : United States
Organisme : NIH HHS
ID : HL148857
Pays : United States
Organisme : NHLBI NIH HHS
ID : U01 HL148857
Pays : United States
Organisme : NIEHS NIH HHS
ID : P30 ES013508
Pays : United States
Organisme : NIH HHS
ID : HL134745
Pays : United States
Organisme : NHLBI NIH HHS
ID : R35 HL150767
Pays : United States
Organisme : NHLBI NIH HHS
ID : K08 HL130586
Pays : United States
Organisme : NHLBI NIH HHS
ID : U01 HL152978
Pays : United States
Commentaires et corrections
Type : CommentIn
Informations de copyright
© 2022. The Author(s), under exclusive licence to Springer Nature Limited.
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