Author
Listed:
- Barbara Spix
(Ludwig-Maximilians-University)
- Elisabeth S. Butz
(Ludwig-Maximilians-University
Institute for Neurophysiology, Hannover Medical School)
- Cheng-Chang Chen
(Ludwig-Maximilians-University
National Taiwan University)
- Anna Scotto Rosato
(Ludwig-Maximilians-University)
- Rachel Tang
(Ludwig-Maximilians-University)
- Aicha Jeridi
(Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL))
- Veronika Kudrina
(Ludwig-Maximilians-University)
- Eva Plesch
(Ludwig-Maximilians-University)
- Philipp Wartenberg
(Saarland University, Center for Molecular Signaling (PZMS), Experimental Pharmacology)
- Elisabeth Arlt
(Ludwig-Maximilians-University)
- Daria Briukhovetska
(University Hospital Munich)
- Meshal Ansari
(Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL))
- Gizem Günes Günsel
(Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL))
- Thomas M. Conlon
(Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL))
- Amanda Wyatt
(Saarland University, Center for Molecular Signaling (PZMS), Experimental Pharmacology)
- Sandra Wetzel
(Christian-Albrechts-University Kiel)
- Daniel Teupser
(University Hospital Munich)
- Lesca M. Holdt
(University Hospital Munich)
- Fabien Ectors
(Liège University)
- Ingrid Boekhoff
(Ludwig-Maximilians-University)
- Ulrich Boehm
(Saarland University, Center for Molecular Signaling (PZMS), Experimental Pharmacology)
- Jaime García-Añoveros
(Northwestern University, Feinberg School of Medicine)
- Paul Saftig
(Christian-Albrechts-University Kiel)
- Martin Giera
(Leiden University Medical Center)
- Sebastian Kobold
(University Hospital Munich
German Center for Translational Cancer Research (DKTK), partner site Munich)
- Herbert B. Schiller
(Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL))
- Susanna Zierler
(Ludwig-Maximilians-University
Johannes-Keppler-University)
- Thomas Gudermann
(Ludwig-Maximilians-University
German Center of Lung Research (DZL))
- Christian Wahl-Schott
(Institute for Neurophysiology, Hannover Medical School)
- Franz Bracher
(Ludwig-Maximilians-University)
- Ali Önder Yildirim
(Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL))
- Martin Biel
(Ludwig-Maximilians-University)
- Christian Grimm
(Ludwig-Maximilians-University)
Abstract
Lung emphysema and chronic bronchitis are the two most common causes of chronic obstructive pulmonary disease. Excess macrophage elastase MMP-12, which is predominantly secreted from alveolar macrophages, is known to mediate the development of lung injury and emphysema. Here, we discovered the endolysosomal cation channel mucolipin 3 (TRPML3) as a regulator of MMP-12 reuptake from broncho-alveolar fluid, driving in two independently generated Trpml3−/− mouse models enlarged lung injury, which is further exacerbated after elastase or tobacco smoke treatment. Mechanistically, using a Trpml3IRES-Cre/eR26-τGFP reporter mouse model, transcriptomics, and endolysosomal patch-clamp experiments, we show that in the lung TRPML3 is almost exclusively expressed in alveolar macrophages, where its loss leads to defects in early endosomal trafficking and endocytosis of MMP-12. Our findings suggest that TRPML3 represents a key regulator of MMP-12 clearance by alveolar macrophages and may serve as therapeutic target for emphysema and chronic obstructive pulmonary disease.
Suggested Citation
Barbara Spix & Elisabeth S. Butz & Cheng-Chang Chen & Anna Scotto Rosato & Rachel Tang & Aicha Jeridi & Veronika Kudrina & Eva Plesch & Philipp Wartenberg & Elisabeth Arlt & Daria Briukhovetska & Mesh, 2022.
"Lung emphysema and impaired macrophage elastase clearance in mucolipin 3 deficient mice,"
Nature Communications, Nature, vol. 13(1), pages 1-18, December.
Handle:
RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-021-27860-x
DOI: 10.1038/s41467-021-27860-x
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