bioRxiv preprint doi: https://doi.org/10.1101/451807; this version posted October 24, 2018. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Title Single-cell RNA sequencing reveals novel cell differentiation dynamics during human airway epithelium regeneration Authors: Sandra Ruiz Garcia1†, Marie Deprez1†, Kevin Lebrigand1, Agnès Paquet1, Amélie Cavard1, Marie-Jeanne Arguel1, Virginie Magnone1, Ignacio Caballero2, Sylvie Leroy1,3, Charles-Hugo Marquette3, Brice Marcet1, Pascal Barbry1, Laure-Emmanuelle Zaragosi1 Affiliations: 1Université Côte d’Azur, CNRS, IPMC, Sophia-Antipolis, France. 2 ISP, INRA, Université Tours, 37380, Nouzilly, France. 3Université Côte d’Azur, CHU de Nice, Pulmonology Department, Nice, France. † These authors contributed equally Correspondence to:
[email protected] 1 bioRxiv preprint doi: https://doi.org/10.1101/451807; this version posted October 24, 2018. The copyright holder for this preprint (which was not certified by peer review) is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under aCC-BY-NC-ND 4.0 International license. Abstract Background: It is usually considered that the upper airway epithelium is composed of multiciliated, goblet, secretory and basal cells, which collectively constitute an efficient first line of defense against inhalation of noxious substances. Upon injury, regeneration of this epithelium through proliferation and differentiation can restore a proper mucociliary function. However, in chronic airway diseases, the injured epithelium frequently displays defective repair leading to tissue remodeling, characterized by a loss of multiciliated cells and mucus hyper-secretion.