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Therapeutic potential of synergistic mucociliary clearance for cystic fibrosis airways by combined 𝜷-adrenergic + cholinergic agonists
Journal article   Open access   Peer reviewed

Therapeutic potential of synergistic mucociliary clearance for cystic fibrosis airways by combined 𝜷-adrenergic + cholinergic agonists

Nam Soo Joo, Susan E Birket, Johnathan D Keith, Juan P Ianowski, Xiaojie Luan, Jacquelyn Spano, Jennifer B Bollyky, Marissa N Dobry, Juan R Sabater, Ryan W Williams, …
The Journal of clinical investigation, Vol.136(11), e201541
06/01/2026
DOI: 10.1172/JCI201541
PMCID: PMC13221217
PMID: 41926225
url
https://doi.org/10.1172/JCI201541View
Published (Version of record) Open Access

Abstract

Mucociliary clearance (MCC) is an innate defense mechanism that normally keeps airways clean but is dysfunctional in cystic fibrosis (CF) and other muco-obstructive pulmonary diseases. Previously we discovered that activating adenyl cyclase in combination with a cholinergic agonist increased MCC velocity (MCCV) synergistically in ex vivo WT and CF ferret and WT piglets. The present study extends and underpins our earlier findings by showing for the first time, in vivo synergistic MCC in WT rats and in CF sheep models and CF rats using inhalable β-adrenergic and cholinergic drugs approved for human use when delivered to the apical surface and a single dose is tolerated by humans. As for mechanisms via ex vivo experiments, we show the combined agonists increased net fluid secretion mainly by stimulating gland secretion and by inhibiting surface absorption, consequently increased ASL depth. They also increased net base secretion and increased ciliary beat frequency. Additional ex vivo and in vitro experiments show that the combined agonists have additive effects when combined with highly effective CF transmembrane conductance regulator (CFTR) modulator therapy (HEMT). The synergistic increase in MCCV induced by this combination of agonists offers therapeutic potential for treating muco-obstructive pulmonary diseases including CF.
Cell Biology Pharmacology Pulmonology Chloride channels Clinical Research Epithelial transport of ions and water

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