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Sheriff A, Guri I, Zebrowska P, Llopis-Hernandez V, Brooks IR, Tekkela S, Subramaniam K, Gebrezgabher R, Naso G, Petrova A, Balon K, Onoufriadis A, Kujawa D, Kotulska M, Newby G, Łaczmański Ł, Liu DR, McGrath JA, Jacków J. ABE8e adenine base editor precisely and efficiently corrects a recurrent COL7A1 nonsense mutation. Sci Rep 2022; 12:19643. [PMID: 36385635 PMCID: PMC9666996 DOI: 10.1038/s41598-022-24184-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 11/11/2022] [Indexed: 11/17/2022] Open
Abstract
Base editing introduces precise single-nucleotide edits in genomic DNA and has the potential to treat genetic diseases such as the blistering skin disease recessive dystrophic epidermolysis bullosa (RDEB), which is characterized by mutations in the COL7A1 gene and type VII collagen (C7) deficiency. Adenine base editors (ABEs) convert A-T base pairs to G-C base pairs without requiring double-stranded DNA breaks or donor DNA templates. Here, we use ABE8e, a recently evolved ABE, to correct primary RDEB patient fibroblasts harboring the recurrent RDEB nonsense mutation c.5047 C > T (p.Arg1683Ter) in exon 54 of COL7A1 and use a next generation sequencing workflow to interrogate post-treatment outcomes. Electroporation of ABE8e mRNA into a bulk population of RDEB patient fibroblasts resulted in remarkably efficient (94.6%) correction of the pathogenic allele, restoring COL7A1 mRNA and expression of C7 protein in western blots and in 3D skin constructs. Off-target DNA analysis did not detect off-target editing in treated patient-derived fibroblasts and there was no detectable increase in A-to-I changes in the RNA. Taken together, we have established a highly efficient pipeline for gene correction in primary fibroblasts with a favorable safety profile. This work lays a foundation for developing therapies for RDEB patients using ex vivo or in vivo base editing strategies.
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Affiliation(s)
- Adam Sheriff
- St John's Institute of Dermatology, Faculty of Life Sciences and Medicine, King's College London, 9th Floor Tower Wing, Guy's Hospital, Great Maze Pond Road, London, SE1 9RT, UK
| | - Ina Guri
- St John's Institute of Dermatology, Faculty of Life Sciences and Medicine, King's College London, 9th Floor Tower Wing, Guy's Hospital, Great Maze Pond Road, London, SE1 9RT, UK
| | - Paulina Zebrowska
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Virginia Llopis-Hernandez
- St John's Institute of Dermatology, Faculty of Life Sciences and Medicine, King's College London, 9th Floor Tower Wing, Guy's Hospital, Great Maze Pond Road, London, SE1 9RT, UK
| | - Imogen R Brooks
- St John's Institute of Dermatology, Faculty of Life Sciences and Medicine, King's College London, 9th Floor Tower Wing, Guy's Hospital, Great Maze Pond Road, London, SE1 9RT, UK
| | - Stavroula Tekkela
- St John's Institute of Dermatology, Faculty of Life Sciences and Medicine, King's College London, 9th Floor Tower Wing, Guy's Hospital, Great Maze Pond Road, London, SE1 9RT, UK
| | - Kavita Subramaniam
- St John's Institute of Dermatology, Faculty of Life Sciences and Medicine, King's College London, 9th Floor Tower Wing, Guy's Hospital, Great Maze Pond Road, London, SE1 9RT, UK
| | - Ruta Gebrezgabher
- St John's Institute of Dermatology, Faculty of Life Sciences and Medicine, King's College London, 9th Floor Tower Wing, Guy's Hospital, Great Maze Pond Road, London, SE1 9RT, UK
| | - Gaetano Naso
- Molecular and Cellular Immunology Unit, UCL GOS Institute of Child Health, London, UK
| | - Anastasia Petrova
- Molecular and Cellular Immunology Unit, UCL GOS Institute of Child Health, London, UK
| | - Katarzyna Balon
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Alexandros Onoufriadis
- St John's Institute of Dermatology, Faculty of Life Sciences and Medicine, King's College London, 9th Floor Tower Wing, Guy's Hospital, Great Maze Pond Road, London, SE1 9RT, UK
| | - Dorota Kujawa
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Martyna Kotulska
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - Gregory Newby
- Merkin Institute of Transformative Technologies in Healthcare, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
- Howard Hughes Medical Institute, Harvard University, Cambridge, MA, USA
| | - Łukasz Łaczmański
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wroclaw, Poland
| | - David R Liu
- Merkin Institute of Transformative Technologies in Healthcare, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA, USA
- Howard Hughes Medical Institute, Harvard University, Cambridge, MA, USA
| | - John A McGrath
- St John's Institute of Dermatology, Faculty of Life Sciences and Medicine, King's College London, 9th Floor Tower Wing, Guy's Hospital, Great Maze Pond Road, London, SE1 9RT, UK
| | - Joanna Jacków
- St John's Institute of Dermatology, Faculty of Life Sciences and Medicine, King's College London, 9th Floor Tower Wing, Guy's Hospital, Great Maze Pond Road, London, SE1 9RT, UK.
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Hajiali H, Ouyang L, Llopis-Hernandez V, Dobre O, Rose FRAJ. Review of emerging nanotechnology in bone regeneration: progress, challenges, and perspectives. Nanoscale 2021; 13:10266-10280. [PMID: 34085085 DOI: 10.1039/d1nr01371h] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The application of nanotechnology to regenerative medicine has increased over recent decades. The development of materials that can influence biology at the nanoscale has gained interest as our understanding of the interactions between cells and biomaterials at the nanoscale has grown. Materials that are either nanostructured or influence the nanostructure of the cellular microenvironment have been developed and shown to have advantages over their microscale counterparts. There are several reviews which have been published that discuss how nanomaterials have been used in regenerative medicine, particularly in bone regeneration. Most of these studies have explored this concept in specific areas, such as the application of glass-based nanocomposites, nanotechnology for targeted drug delivery to stimulate bone repair, and the progress in nanotechnology for the treatment of osteoporosis. In this review paper, the impact of nanotechnology in biomaterials development for bone regeneration will be discussed highlighting specifically, nanostructured materials that influence mechanical properties, biocompatibility, and osteoinductivity.
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Affiliation(s)
- Hadi Hajiali
- Division of Regenerative Medicine and Cellular Therapies, School of Pharmacy, University Park, University of Nottingham, NG7 2RD, UK.
| | - Liliang Ouyang
- Department of Materials, Imperial College London, London, SW7 2AZ, UK and Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China
| | | | - Oana Dobre
- Centre for the Cellular Microenvironment, University of Glasgow, Glasgow, G12 8LT, UK
| | - Felicity R A J Rose
- Division of Regenerative Medicine and Cellular Therapies, School of Pharmacy, University Park, University of Nottingham, NG7 2RD, UK.
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Hodgkinson T, Tsimbouri PM, Llopis-Hernandez V, Campsie P, Scurr D, Childs PG, Phillips D, Donnelly S, Wells JA, O'Brien FJ, Salmeron-Sanchez M, Burgess K, Alexander M, Vassalli M, Oreffo ROC, Reid S, France DJ, Dalby MJ. The use of nanovibration to discover specific and potent bioactive metabolites that stimulate osteogenic differentiation in mesenchymal stem cells. Sci Adv 2021; 7:7/9/eabb7921. [PMID: 33637520 PMCID: PMC7909882 DOI: 10.1126/sciadv.abb7921] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 01/12/2021] [Indexed: 05/02/2023]
Abstract
Bioactive metabolites have wide-ranging biological activities and are a potential source of future research and therapeutic tools. Here, we use nanovibrational stimulation to induce osteogenic differentiation of mesenchymal stem cells, in the absence of off-target, nonosteogenic differentiation. We show that this differentiation method, which does not rely on the addition of exogenous growth factors to culture media, provides an artifact-free approach to identifying bioactive metabolites that specifically and potently induce osteogenesis. We first identify a highly specific metabolite, cholesterol sulfate, an endogenous steroid. Next, a screen of other small molecules with a similar steroid scaffold identified fludrocortisone acetate with both specific and highly potent osteogenic-inducing activity. Further, we implicate cytoskeletal contractility as a measure of osteogenic potency and cell stiffness as a measure of specificity. These findings demonstrate that physical principles can be used to identify bioactive metabolites and then enable optimization of metabolite potency can be optimized by examining structure-function relationships.
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Affiliation(s)
- Tom Hodgkinson
- Centre for the Cellular Microenvironment, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin D2, Ireland
| | - P Monica Tsimbouri
- Centre for the Cellular Microenvironment, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Virginia Llopis-Hernandez
- Centre for the Cellular Microenvironment, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Paul Campsie
- SUPA Department of Biomedical Engineering, University of Strathclyde, Glasgow G1 1QE, UK
| | - David Scurr
- School of Pharmacy, The University of Nottingham, Nottingham NG7 2RD, UK
| | - Peter G Childs
- Centre for the Cellular Microenvironment, Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow G12 8LT, UK
| | - David Phillips
- School of Chemistry, College of Science and Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | - Sam Donnelly
- Centre for the Cellular Microenvironment, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK
| | - Julia A Wells
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Institute of Developmental Sciences, University of Southampton, Southampton SO16 6YD, UK
| | - Fergal J O'Brien
- Tissue Engineering Research Group, Department of Anatomy and Regenerative Medicine, Royal College of Surgeons in Ireland, Dublin D2, Ireland
| | - Manuel Salmeron-Sanchez
- Centre for the Cellular Microenvironment, Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow G12 8LT, UK
| | - Karl Burgess
- Glasgow Polyomics, College of Medical, Veterinary and Life Sciences, University of Glasgow, Switchback Rd., Bearsden, Glasgow G61 1BD, UK
| | - Morgan Alexander
- School of Pharmacy, The University of Nottingham, Nottingham NG7 2RD, UK
| | - Massimo Vassalli
- Centre for the Cellular Microenvironment, Division of Biomedical Engineering, School of Engineering, University of Glasgow, Glasgow G12 8LT, UK
| | - Richard O C Oreffo
- Bone and Joint Research Group, Centre for Human Development, Stem Cells and Regeneration, Institute of Developmental Sciences, University of Southampton, Southampton SO16 6YD, UK
| | - Stuart Reid
- SUPA Department of Biomedical Engineering, University of Strathclyde, Glasgow G1 1QE, UK
| | - David J France
- School of Chemistry, College of Science and Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | - Matthew J Dalby
- Centre for the Cellular Microenvironment, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow G12 8QQ, UK.
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