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A scalable, GMP-compatible, autologous organotypic cell therapy for Dystrophic Epidermolysis Bullosa

ABSTRACT: A scalable, GMP-compatible, autologous organotypic cell therapy for Dystrophic Epidermolysis Bullosa

PROVIDER: PRJNA956670 | ENA |

REPOSITORIES: ENA

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A scalable, GMP-compatible, autologous organotypic cell therapy for Dystrophic Epidermolysis Bullosa

Project description:Gene editing in induced pluripotent stem (iPS) cells has been hailed for enabling new cell therapies for various monogenetic diseases including dystrophic epidermolysis bullosa(DEB). However, manufacturing, efficacy, and safety roadblocks have limited the development of genetically corrected, autologous iPS cell-based therapies. We developed Dystrophic Epidermolysis Bullosa Cell Therapy (DEBCT), a new generation GMP-compatible (cGMP), reproducible, and scalable platform to produce autologous clinical-grade iPS cell-derived organotypic induced skin composite (iSC) grafts to treat incurable wounds of patients lacking type VII collagen (C7).

2024-06-30 | GSE229920 | GEO

A scalable, GMP-compatible, autologous organotypic cell therapy for Dystrophic Epidermolysis Bullosa

Project description:A scalable, GMP-compatible, autologous organotypic cell therapy for Dystrophic Epidermolysis Bullosa

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A scalable and cGMP-compatible autologous organotypic cell therapy for Dystrophic Epidermolysis Bullosa.

Project description:We present Dystrophic Epidermolysis Bullosa Cell Therapy (DEBCT), a scalable platform producing autologous organotypic iPS cell-derived induced skin composite (iSC) grafts for definitive treatment. Clinical-grade manufacturing integrates CRISPR-mediated genetic correction with reprogramming into one step, accelerating derivation of COL7A1-edited iPS cells from patients. Differentiation into epidermal, dermal and melanocyte progenitors is followed by CD49f-enrichment, minimizing maturation heterogeneity. Mouse xenografting of iSCs from four patients with different mutations demonstrates disease modifying activity at 1 month. Next-generation sequencing, biodistribution and tumorigenicity assays establish a favorable safety profile at 1-9 months. Single cell transcriptomics reveals that iSCs are composed of the major skin cell lineages and include prominent holoclone stem cell-like signatures of keratinocytes, and the recently described Gibbin-dependent signature of fibroblasts. The latter correlates with enhanced graftability of iSCs. In conclusion, DEBCT overcomes manufacturing and safety roadblocks and establishes a reproducible, safe, and cGMP-compatible therapeutic approach to heal lesions of DEB patients.

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Single-cell RNA-seq of fibroblasts from recessive dystrophic epidermolysis bullosa patients and wild-type controls

Project description:The goal of this study is to discover fibroblast subpopulations relevant to recessive dystrophic epidermolysis bullosa

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Transcriptome profiling of cultured primary recessive dystrophic epidermolysis bullosa (RDEB) squamous cell carcinoma (SCC)

Project description:Recessive dystrophic epidermolysis bullosa (RDEB) is a monogenetic skin disorder caused by mutations in the COL7A1 gene. Missing type VII collagen leads to severe blister formation and frequent chronic wounds. Patients suffering from RDEB are prone to develop particulary aggressive squamous cell carcinoma (SCC), representing the major cause of mortality. This dataset provides Affymetrix microarray (ClariomD) based whole transcriptome data on RNA isolated from cultured primary RDEB keratinocytes (RDEB-KC) as well as RDEB squamous cell carcinoma (RDEB-SCC). Cells were derived from punch biopsies or tumor resections from patients with confirmed diagnosis recessive dystrophic epidermolysis bullosa (RDEB). Primary KC and SCC were cultivated in fully defined medium till subconfluency. Total RNA was isolated and microarray assay performed.

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Project description:Recessive dystrophic epidermolysis bullosa (RDEB) is a rare inherited skin disease characterized by defects in type VII collagen leading to a range of fibrotic pathologies resulting from skin fragility, aberrant wound healing and altered dermal fibroblast physiology. Using a novel in vitro model of fibrosis based on endogenously produced extracellular matrix, we screened an FDA-approved compound library and identified antivirals as a class of drug not previously associated with anti-fibrotic action. Pre-clinical validation of our lead hit, daclatasvir, in a mouse model of RDEB demonstrated significant improvement in fibrosis as well as overall quality of life with increased survival, weight gain and activity, and a decrease in pruritus-induced hair loss. Immunohistochemical assessment of daclatasvir-treated RDEB mouse skin showed a reduction in fibrotic markers, which was supported by in vitro data demonstrating TGFβ pathway targeting and a reduction of total collagen retained in the extracellular matrix. Our data support clinical development of antivirals for treatment of patients with RDEB and potentially other fibrotic diseases.

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