Cytosine Deaminase Base Editing to Restore COL7A1 in Dystrophic Epidermolysis Bullosa Human: Murine Skin Model.

Autor:	Naso G; Molecular and Cellular Immunology Unit, UCL Great Ormond Street Institute of Child Health, London, United Kingdom., Gkazi SA; Molecular and Cellular Immunology Unit, UCL Great Ormond Street Institute of Child Health, London, United Kingdom., Georgiadis C; Molecular and Cellular Immunology Unit, UCL Great Ormond Street Institute of Child Health, London, United Kingdom., Jayarajan V; Molecular and Cellular Immunology Unit, UCL Great Ormond Street Institute of Child Health, London, United Kingdom., Jacków J; St John's Institute of Dermatology, Kings College London, London, United Kingdom., Fleck R; Centre for Ultrastructural Imaging, King's College London, London, United Kingdom., Allison L; Centre for Ultrastructural Imaging, King's College London, London, United Kingdom., Ogunbiyi OK; Department of Histopathology, Camelia Botnar Laboratories, UCL Great Ormond Street Institute of Child Health, London, United Kingdom., McGrath JA; St John's Institute of Dermatology, Kings College London, London, United Kingdom., Ilic D; Department of Women and Children's Health, School of Life Course Sciences, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom., Di WL; Molecular and Cellular Immunology Unit, UCL Great Ormond Street Institute of Child Health, London, United Kingdom., Petrova A; Molecular and Cellular Immunology Unit, UCL Great Ormond Street Institute of Child Health, London, United Kingdom., Qasim W; Molecular and Cellular Immunology Unit, UCL Great Ormond Street Institute of Child Health, London, United Kingdom.
Jazyk:	angličtina
Zdroj:	JID innovations : skin science from molecules to population health [JID Innov] 2023 Feb 19; Vol. 3 (3), pp. 100191. Date of Electronic Publication: 2023 Feb 19 (Print Publication: 2023).
DOI:	10.1016/j.xjidi.2023.100191
Abstrakt:	Recessive dystrophic epidermolysis bullosa is a debilitating blistering skin disorder caused by loss-of-function mutations in COL7A1, which encodes type VII collagen, the main component of anchoring fibrils at the dermal-epidermal junction. Although conventional gene therapy approaches through viral vectors have been tested in preclinical and clinical trials, they are limited by transgene size constraints and only support unregulated gene expression. Genome editing could potentially overcome some of these limitations, and CRISPR/Cas9 has already been applied in research studies to restore COL7A1 expression. The delivery of suitable repair templates for the repair of DNA cleaved by Cas9 is still a major challenge, and alternative base editing strategies may offer corrective solutions for certain mutations. We show highly targeted and efficient cytidine deamination and molecular correction of a defined recessive dystrophic epidermolysis bullosa mutation (c.425A>G), leading to restoration of full-length type VII collagen protein expression in primary human fibroblasts and induced pluripotent stem cells. Type VII collagen basement membrane expression and skin architecture were restored with de novo anchoring fibrils identified by electron microscopy in base-edited human recessive dystrophic epidermolysis bullosa grafts recovered from immunodeficient mice. The results show the potential and promise of emerging base editing technologies in tackling inherited disorders with well-defined single nucleotide mutations. (© 2023 The Authors.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu