Institut Necker Enfants Malades 2 articles published in JoVE Biology Primary Human Nasal Epithelial Cells: Biobanking in the Context of Precision Medicine Mairead Kelly1,2, Elise Dreano1,2, Aurelie Hatton1,2, Agathe Lepissier1,2, Anita Golec1,2, Isabelle Sermet-Gaudelus1,2,3, Iwona Pranke1,2,3 1Institut Necker Enfants Malades, 2Université de Paris, 3Centre de Référence Maladies Rares Mucoviscidose et Maladies apparentées, Assistance Publique Hôpitaux de Paris Here we describe the isolation, amplification, and differentiation of primary human nasal epithelial (HNE) cells at the air-liquid interface and a biobanking protocol allowing to successfully freeze and then thaw amplified HNE. The protocol analyzes electrophysiological properties of differentiated HNE cells and CFTR-related chloride secretion correction upon different modulator treatments. Medicine Standardized Measurement of Nasal Membrane Transepithelial Potential Difference (NPD) George M. Solomon1, Inez Bronsveld2, Kathryn Hayes3, Michael Wilschanski4, Paola Melotti5, Steven M. Rowe1, Isabelle Sermet-Gaudelus6,7 1Department of Medicine and the Gregory Fleming James Cystic Fibrosis Center, University of Alabama at Birmingham, 2Department of Pulmonology and Tuberculosis, University Medical Center Utrecht, 3Center for Experimental Medicine, Queens University, Northern Ireland, 4Hadassah Hebrew University Medical Center, Jerusalem, 5Centro Fibrosi Cistica, Azienda Ospedaliera Universitaria Integrata, 6Service de Pneumologie et Allergologie Pédiatriques and Center de Ressources et de Compétence de la Mucoviscidose, Hôpital Necker Enfants Malades, 7INSERM U 1151, Institut Necker Enfants Malades Here, we present a standardized protocol to measure the nasal potential difference (NPD). Cystic fibrosis transmembrane conductance regulator (CFTR) and epithelial sodium channel (ENaC) function are evaluated by the change in the voltage across the nasal epithelium after superfusion of solutions that modify ion channel activity, providing an outcome measure.
