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LincR-PPP2R5C regulates IL-1β ubiquitination in macrophages and promotes airway inflammation and emphysema in a murine model of COPD.
- Source :
-
International immunopharmacology [Int Immunopharmacol] 2024 Sep 30; Vol. 139, pp. 112680. Date of Electronic Publication: 2024 Jul 16. - Publication Year :
- 2024
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Abstract
- Chronic obstructive pulmonary disease (COPD) is a common disease with high global morbidity and mortality. Macrophages release IL-1β and orchestrate airway inflammation in COPD. Previously, we explored the role of a new lncRNA, LincR-PPP2R5C, in regulating Th2 cells in asthma. Here, we established a murine model of COPD and explored the roles and mechanisms by which LincR-PPP2R5C regulates IL-1β in macrophages. LincR-PPP2R5C was highly expressed in pulmonary macrophages from COPD-like mice. LincR-PPP2R5C deficiency ameliorated emphysema and pulmonary inflammation, as characterized by reduced IL-1β in macrophages. Unexpectedly, in both lung tissues and macrophages, LincR-PPP2R5C deficiency decreased the expression of the IL-1β protein but not the IL-1β mRNA. Furthermore, we found that LincR-PPP2R5C deficiency increased the level of ubiquitinated IL-1β in macrophages, which was mediated by PP2A activity. Targeting PP2A with FTY720 decreased IL-1β and improved COPD. In conclusion, LincR-PPP2R5C regulates IL-1β ubiquitination by affecting PP2A activity in macrophages, contributing to the airway inflammation and emphysema in a murine model of COPD. PP2A and IL-1β ubiquitination in macrophages might be new therapeutic avenues for COPD therapy.<br />Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.<br /> (Copyright © 2024 Elsevier B.V. All rights reserved.)
- Subjects :
- Animals
Mice
Protein Phosphatase 2 metabolism
Macrophages immunology
Macrophages metabolism
Humans
Male
Pulmonary Emphysema metabolism
Pulmonary Emphysema immunology
Pulmonary Emphysema pathology
Pulmonary Emphysema genetics
Lung pathology
Lung immunology
Mice, Knockout
Pulmonary Disease, Chronic Obstructive immunology
Pulmonary Disease, Chronic Obstructive metabolism
Interleukin-1beta metabolism
Disease Models, Animal
Ubiquitination
Mice, Inbred C57BL
RNA, Long Noncoding genetics
RNA, Long Noncoding metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1878-1705
- Volume :
- 139
- Database :
- MEDLINE
- Journal :
- International immunopharmacology
- Publication Type :
- Academic Journal
- Accession number :
- 39018689
- Full Text :
- https://doi.org/10.1016/j.intimp.2024.112680