ArticleBiochemistry and biophysics reports2021
The phosphodiesterase 4 inhibitor AA6216 suppresses activity of fibrosis-specific macrophages.
Article in Biochemistry and biophysics reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 4 citations in OpenAlex.
- Article
- Antifibrotic Strategies Targeting Phosphodiesterase-4 in Idiopathic Pulmonary Fibrosis: Molecular Mechanisms and Clinical Translation.Clinical pharmacology : advances and applications · 2026Review
- Phosphodiesterase 4B inhibition: a potential novel strategy for treating pulmonary fibrosis.European respiratory review : an official journal of the European Respiratory Society · 2023Review
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7 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundIdiopathic pulmonary fibrosis (IPF) is a form of chronic, progressive fibrosing interstitial pneumonia of unknown cause, with a poor prognosis. We previously showed the antifibrotic effects of a novel phosphodiesterase 4 (PDE4) inhibitor, AA6216. In this study, we examined the effect of AA6216 on the pulmonary accumulation of segregated-nucleus-containing atypical monocytes (SatMs), which produce tumor necrosis factor (TNF)-α and are involved in murine lung fibrosis.
methodsMice were treated with bleomycin intratracheally at day 0 and either 10 mg/kg AA6216, 100 mg/kg nintedanib, or vehicle orally once daily from day 0 to 8. On day 9, we isolated the bronchoalveolar lavage fluid and analyzed the SatM ratio. In addition, we evaluated the effect of AA6216 on TNF-α production from SatMs isolated from murine bone marrow.
resultsAA6216, and not the antifibrotic agent nintedanib, significantly suppressed the pulmonary accumulation of SatMs (AA6216: 68.3 ± 5.4%, Nintedanib: 129.8 ± 19.7%). Furthermore, AA6216 dose-dependently inhibited the production of TNF-α by SatMs.
conclusionsAA6216 suppresses pathogenic SatMs in the lung, which contributes to its antifibrotic effects.
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