Complex urban atmosphere alters alveolar stem cells niche properties and drives lung fibrosis

Author:

Belgacemi Randa12ORCID,Ribeiro Baptista Bruno1,Justeau Grégoire1,Toigo Marylène1,Frauenpreis Andrew2,Yilmaz Rojda1,Der Vartanian Audrey1ORCID,Cazaunau Mathieu3,Pangui Edouard3,Bergé Antonin4,Gratien Aline4,Macias Rodriguez Juan Camilo4,Bellusci Saverio5,Derumeaux Geneviève16ORCID,Boczkowski Jorge1,Al Alam Denise2ORCID,Coll Patrice4,Lanone Sophie1,Boyer Laurent16ORCID

Affiliation:

1. Université Paris Est Créteil, INSERM, IMRB, FHU Senec, Créteil, France

2. Lundquist Institute for Biomedical Innovation, Harbor-UCLA Medical Center, Torrance, California, United States

3. Université Paris Est Créteil and Université Paris Cité, CNRS, LISA, Créteil, France

4. Université Paris Cité and Université Paris Est Créteil, CNRS, LISA, Paris, France

5. German Center for Lung Research (DZL), Department of Pulmonary and Critical Care Medicine and Infectious Diseases, Cardio-Pulmonary Institute (CPI), Universities of Giessen and Marburg Lung Center (UGMLC), Justus Liebig University Giessen, Giessen, Germany

6. Service de Physiologie-Explorations Fonctionnelles, Hôpital Henri Mondor, Créteil, France

Abstract

Urban pollution is known to have major adverse effects on lung health. To assess the effect of pollution on alveolar regeneration, we exposed adult mice to a simulated high-pollution urban atmosphere, using an innovative CESAM simulation chamber (Multiphase Atmospheric Experimental Simulation Chamber, https://cesam.cnrs.fr/ ). We demonstrated that urban atmosphere alters alveolar mesenchymal stem cell niche properties by inducing a lipofibroblast to myofibroblast shift and induces alveolar epithelial dysfunction.

Funder

Agence Nationale de Sécurité Sanitaire de l'Alimentation, de l'Environnement et du Travail

California Institute for Regenerative Medicine

HHS | NIH | National Heart, Lung, and Blood Institute

Publisher

American Physiological Society

Subject

Cell Biology,Physiology (medical),Pulmonary and Respiratory Medicine,Physiology

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