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| Home > Publications database > Gene Augmentation of CHM Using Non-Viral Episomal Vectors in Models of Choroideremia. > print |
| 001 | 285071 | ||
| 005 | 20240229155100.0 | ||
| 024 | 7 | _ | |a 10.3390/ijms242015225 |2 doi |
| 024 | 7 | _ | |a pmid:37894906 |2 pmid |
| 024 | 7 | _ | |a pmc:PMC10607001 |2 pmc |
| 024 | 7 | _ | |a 1422-0067 |2 ISSN |
| 024 | 7 | _ | |a 1661-6596 |2 ISSN |
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| 037 | _ | _ | |a DKFZ-2023-02214 |
| 041 | _ | _ | |a English |
| 082 | _ | _ | |a 540 |
| 100 | 1 | _ | |a Toualbi, Lyes |b 0 |
| 245 | _ | _ | |a Gene Augmentation of CHM Using Non-Viral Episomal Vectors in Models of Choroideremia. |
| 260 | _ | _ | |a Basel |c 2023 |b Molecular Diversity Preservation International |
| 336 | 7 | _ | |a article |2 DRIVER |
| 336 | 7 | _ | |a Output Types/Journal article |2 DataCite |
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| 336 | 7 | _ | |a ARTICLE |2 BibTeX |
| 336 | 7 | _ | |a JOURNAL_ARTICLE |2 ORCID |
| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 520 | _ | _ | |a Choroideremia (CHM) is an X-linked chorioretinal dystrophy leading to progressive retinal degeneration that results in blindness by late adulthood. It is caused by mutations in the CHM gene encoding the Rab Escort Protein 1 (REP1), which plays a crucial role in the prenylation of Rab proteins ensuring correct intracellular trafficking. Gene augmentation is a promising therapeutic strategy, and there are several completed and ongoing clinical trials for treating CHM using adeno-associated virus (AAV) vectors. However, late-phase trials have failed to show significant functional improvements and have raised safety concerns about inflammatory events potentially caused by the use of viruses. Therefore, alternative non-viral therapies are desirable. Episomal scaffold/matrix attachment region (S/MAR)-based plasmid vectors were generated containing the human CHM coding sequence, a GFP reporter gene, and ubiquitous promoters (pS/MAR-CHM). The vectors were assessed in two choroideremia disease model systems: (1) CHM patient-derived fibroblasts and (2) chmru848 zebrafish, using Western blotting to detect REP1 protein expression and in vitro prenylation assays to assess the rescue of prenylation function. Retinal immunohistochemistry was used to investigate vector expression and photoreceptor morphology in injected zebrafish retinas. The pS/MAR-CHM vectors generated persistent REP1 expression in CHM patient fibroblasts and showed a significant rescue of prenylation function by 75%, indicating correction of the underlying biochemical defect associated with CHM. In addition, GFP and human REP1 expression were detected in zebrafish microinjected with the pS/MAR-CHM at the one-cell stage. Injected chmru848 zebrafish showed increased survival, prenylation function, and improved retinal photoreceptor morphology. Non-viral S/MAR vectors show promise as a potential gene-augmentation strategy without the use of immunogenic viral components, which could be applicable to many inherited retinal disease genes. |
| 536 | _ | _ | |a 316 - Infektionen, Entzündung und Krebs (POF4-316) |0 G:(DE-HGF)POF4-316 |c POF4-316 |f POF IV |x 0 |
| 588 | _ | _ | |a Dataset connected to CrossRef, PubMed, , Journals: inrepo02.dkfz.de |
| 650 | _ | 7 | |a S/MAR |2 Other |
| 650 | _ | 7 | |a choroideremia |2 Other |
| 650 | _ | 7 | |a inherited retinal disease |2 Other |
| 650 | _ | 7 | |a non-viral gene therapy |2 Other |
| 650 | _ | 7 | |a CHM protein, human |2 NLM Chemicals |
| 650 | _ | 7 | |a Adaptor Proteins, Signal Transducing |2 NLM Chemicals |
| 650 | _ | 2 | |a Animals |2 MeSH |
| 650 | _ | 2 | |a Humans |2 MeSH |
| 650 | _ | 2 | |a Adult |2 MeSH |
| 650 | _ | 2 | |a Choroideremia: genetics |2 MeSH |
| 650 | _ | 2 | |a Choroideremia: therapy |2 MeSH |
| 650 | _ | 2 | |a Choroideremia: metabolism |2 MeSH |
| 650 | _ | 2 | |a Zebrafish: genetics |2 MeSH |
| 650 | _ | 2 | |a Zebrafish: metabolism |2 MeSH |
| 650 | _ | 2 | |a Retina: metabolism |2 MeSH |
| 650 | _ | 2 | |a Mutation |2 MeSH |
| 650 | _ | 2 | |a Retinal Dystrophies: metabolism |2 MeSH |
| 650 | _ | 2 | |a Plasmids |2 MeSH |
| 650 | _ | 2 | |a Adaptor Proteins, Signal Transducing: genetics |2 MeSH |
| 650 | _ | 2 | |a Adaptor Proteins, Signal Transducing: metabolism |2 MeSH |
| 700 | 1 | _ | |a Toms, Maria |b 1 |
| 700 | 1 | _ | |a Almeida, Patrick Vingadas |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Harbottle, Richard |0 P:(DE-He78)15dff5647002b4dcfe892b251cd14b62 |b 3 |u dkfz |
| 700 | 1 | _ | |a Moosajee, Mariya |0 0000-0003-1688-5360 |b 4 |
| 773 | _ | _ | |a 10.3390/ijms242015225 |g Vol. 24, no. 20, p. 15225 - |0 PERI:(DE-600)2019364-6 |n 20 |p 15225 |t International journal of molecular sciences |v 24 |y 2023 |x 1422-0067 |
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