Transfer of the Cystic Fibrosis Transmembrane Conductance Regulator to Human Cystic Fibrosis Cells Mediated by Extracellular Vesicles

Vituret, Cyrielle; Gallay, Kathy; Confort, Marie-Pierre; Ftaich, Najate; Matei, Constantin I; Archer, Fabienne; Ronfort, Corinne; Mornex, Jean-François; Chanson, Marc; Di Pietro, Attilio; Boulanger, Pierre; Hong, Saw See

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Title		Transfer of the Cystic Fibrosis Transmembrane Conductance Regulator to Human Cystic Fibrosis Cells Mediated by Extracellular Vesicles
Authors		Vituret, Cyrielle Gallay, Kathy Confort, Marie-Pierre Ftaich, Najate Matei, Constantin I Archer, Fabienne Ronfort, Corinne Mornex, Jean-François Chanson, Marc Di Pietro, Attilio Boulanger, Pierre Hong, Saw See show all authors [1 - 12]
Published in		Human Gene Therapy. 2016, vol. 27, no. 2, p. 166-183
Abstract		Cystic fibrosis (CF) is a genetic disease caused by mutations in the CF transmembrane conductance regulator (CFTR) gene, resulting in a deficiency in chloride channel activity. In this study, extracellular vesicles (EVs), microvesicles, and exosomes were used as vehicles to deliver exogenous CFTR glycoprotein and its encoding mRNA (mRNA(GFP-CFTR)) to CF cells to correct the CFTR chloride channel function. We isolated microvesicles and exosomes from the culture medium of CFTR-positive Calu-3 cells, or from A549 cells transduced with an adenoviral vector overexpressing a GFP-tagged CFTR (GFP-CFTR). Both microvesicles and exosomes had the capacity to package and deliver the GFP-CFTR glycoprotein and mRNA(GFP-CFTR) to target cells in a dose-dependent manner. Homologous versus heterologous EV-to-cell transfer was studied, and it appeared that the cellular uptake of EVs was significantly more efficient in homologous transfer. The incubation of CF15 cells, a nasal epithelial cell line homozygous for the ΔF508 CFTR mutation, with microvesicles or exosomes loaded with GFP-CFTR resulted in the correction of the CFTR function in CF cells in a dose-dependent manner. A time-course analysis of EV-transduced CF cells suggested that CFTR transferred as mature glycoprotein was responsible for the CFTR-associated channel activity detected at early times posttransduction, whereas GFP-CFTR translated from exogenous mRNA(GFP-CFTR) was responsible for the CFTR function at later times. Collectively, this study showed the potential application of microvesicles and exosomes as vectors for CFTR transfer and functional correction of the genetic defect in human CF cells.
Keywords		Adenoviruses, Human/genetics/metabolism — Cell Line, Tumor — Cell-Derived Microparticles/chemistry/metabolism — Cystic Fibrosis Transmembrane Conductance Regulator/genetics/metabolism — Epithelial Cells/metabolism/pathology — Exosomes/chemistry/metabolism — Extracellular Vesicles/chemistry/metabolism — Gene Expression — Genetic Therapy/methods — Genetic Vectors/chemistry/metabolism — Green Fluorescent Proteins/genetics/metabolism — HEK293 Cells — Humans — RNA, Messenger/genetics/metabolism — Recombinant Fusion Proteins/genetics/metabolism — Respiratory Mucosa/metabolism/pathology — Transduction, Genetic/methods
Identifiers		DOI: 10.1089/hum.2015.144 PMID: 26886833
Full text		Article (Published version) (1 MB) - Limited access to UNIGE
Structures		Faculté de médecine / Section de médecine clinique / Département de pédiatrie
Research group		Mucoviscidose et jonctions GAP (229)
Project		FNS: 310030_134907/1
Citation (ISO format)		VITURET, Cyrielle et al. Transfer of the Cystic Fibrosis Transmembrane Conductance Regulator to Human Cystic Fibrosis Cells Mediated by Extracellular Vesicles. In: Human Gene Therapy, 2016, vol. 27, n° 2, p. 166-183. https://archive-ouverte.unige.ch/unige:96803