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Qi X, Tan L, Zhang X, Jin J, Kong W, Chen W, Wang J, Dong W, Gao L, Luo L, Lu D, Gong J, Guan F, Shu W, Huang X, Zhang L, Wang S, Shen B, Ma Y. Expanding DdCBE-mediated targeting scope to aC motif preference in rat. MOLECULAR THERAPY. NUCLEIC ACIDS 2023; 32:1-12. [PMID: 36942261 PMCID: PMC10023868 DOI: 10.1016/j.omtn.2023.02.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 02/22/2023] [Indexed: 02/27/2023]
Abstract
An animal model harboring pathogenic mitochondrial DNA (mtDNA) mutations is important to understand the biological links between mtDNA variation and mitochondrial diseases. DdCBE, a DddA-derived cytosine base editor, has been utilized in zebrafish, mice, and rats for tC sequence-context targeting and human mitochondrial disease modeling. However, human pathogenic mtDNA mutations other than the tC context cannot be manipulated. Here, we screened the combination of different DdCBE pairs at pathogenic mtDNA mutation sites with nC (n for a, g, or c) context and identified that the left-G1333C (L1333C) + right G1333N (R1333N) pair could mediate C⋅G-to-T⋅A conversion effectively at aC sites in rat C6 cells. The editing efficiency at disease-associated mtDNA mutation sites within aC context was further confirmed to be up to 67.89% in vivo. Also, the installed disease-associated mtDNA mutations were germline transmittable. Moreover, the edited rats showed impaired cardiac function and mitochondrial function, resembling human mitochondrial disease symptoms. In summary, for the first time, we expanded the DdCBE targeting scope to an aC motif and installed the pathogenic mutation in rats to model human mitochondrial diseases.
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Affiliation(s)
- Xiaolong Qi
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
| | - Lei Tan
- State Key Laboratory of Reproductive Medicine, Women’s Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing Medical University, Nanjing, Jiangsu 211100, China
| | - Xu Zhang
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
| | - Jiachuan Jin
- Center for Reproductive Medicine, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Weining Kong
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
| | - Wei Chen
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
| | - Jianying Wang
- State Key Laboratory of Reproductive Medicine, Women’s Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing Medical University, Nanjing, Jiangsu 211100, China
| | - Wei Dong
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
| | - Lijuan Gao
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
| | - Lijun Luo
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
| | - Dan Lu
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
| | - Jianan Gong
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
| | - Feifei Guan
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
| | - Wenjie Shu
- Bioinformatics Center of AMMS, Beijing 100850, China
| | - Xingxu Huang
- Zhejiang Laboratory, Hangzhou, Zhejiang 311121, China
| | - Lianfeng Zhang
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
- Neuroscience Center, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Shengqi Wang
- Bioinformatics Center of AMMS, Beijing 100850, China
- Corresponding author: Shengqi Wang, Bioinformatics Center of AMMS, Beijing 100850, China.
| | - Bin Shen
- State Key Laboratory of Reproductive Medicine, Women’s Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing Medical University, Nanjing, Jiangsu 211100, China
- Zhejiang Laboratory, Hangzhou, Zhejiang 311121, China
- Gusu School, Nanjing Medical University, Nanjing, Jiangsu 215031, China
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211100, China
- Corresponding author: Bin Shen, State Key Laboratory of Reproductive Medicine, Women’s Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing Medical University, Nanjing, Jiangsu 211100, China.
| | - Yuanwu Ma
- Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
- Neuroscience Center, Chinese Academy of Medical Sciences, Beijing 100730, China
- National Human Diseases Animal Model Resource Center, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China
- Corresponding author: Yuanwu Ma, Key Laboratory of Human Disease Comparative Medicine, National Health Commission of China (NHC), Beijing Engineering Research Center for Experimental Animal Models of Human Critical Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences, Peking Union Medicine College, Beijing 100021, China.
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Mazzaccara C, Mirra B, Barretta F, Caiazza M, Lombardo B, Scudiero O, Tinto N, Limongelli G, Frisso G. Molecular Epidemiology of Mitochondrial Cardiomyopathy: A Search Among Mitochondrial and Nuclear Genes. Int J Mol Sci 2021; 22:ijms22115742. [PMID: 34072184 PMCID: PMC8197938 DOI: 10.3390/ijms22115742] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 05/18/2021] [Accepted: 05/22/2021] [Indexed: 12/23/2022] Open
Abstract
Mitochondrial Cardiomyopathy (MCM) is a common manifestation of multi-organ Mitochondrial Diseases (MDs), occasionally present in non-syndromic cases. Diagnosis of MCM is complex because of wide clinical and genetic heterogeneity and requires medical, laboratory, and neuroimaging investigations. Currently, the molecular screening for MCM is fundamental part of MDs management and allows achieving the definitive diagnosis. In this article, we review the current genetic knowledge associated with MDs, focusing on diagnosis of MCM and MDs showing cardiac involvement. We searched for publications on mitochondrial and nuclear genes involved in MCM, mainly focusing on genetic screening based on targeted gene panels for the molecular diagnosis of the MCM, by using Next Generation Sequencing. Here we report twelve case reports, four case-control studies, eleven retrospective studies, and two prospective studies, for a total of twenty-nine papers concerning the evaluation of cardiac manifestations in mitochondrial diseases. From the analysis of published causal mutations, we identified 130 genes to be associated with mitochondrial heart diseases. A large proportion of these genes (34.3%) encode for key proteins involved in the oxidative phosphorylation system (OXPHOS), either as directly OXPHOS subunits (22.8%), and as OXPHOS assembly factors (11.5%). Mutations in several mitochondrial tRNA genes have been also reported in multi-organ or isolated MCM (15.3%). This review highlights the main disease-genes, identified by extensive genetic analysis, which could be included as target genes in next generation panels for the molecular diagnosis of patients with clinical suspect of mitochondrial cardiomyopathies.
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Affiliation(s)
- Cristina Mazzaccara
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy; (B.M.); (F.B.); (B.L.); (O.S.); (N.T.); (G.F.)
- CEINGE Advanced Biotechnologies, 80145 Naples, Italy
- Correspondence: ; Tel.: +39-0817-462-422
| | - Bruno Mirra
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy; (B.M.); (F.B.); (B.L.); (O.S.); (N.T.); (G.F.)
- CEINGE Advanced Biotechnologies, 80145 Naples, Italy
| | - Ferdinando Barretta
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy; (B.M.); (F.B.); (B.L.); (O.S.); (N.T.); (G.F.)
- CEINGE Advanced Biotechnologies, 80145 Naples, Italy
| | - Martina Caiazza
- Monaldi Hospital, AO Colli, 80131 Naples, Italy; (M.C.); (G.L.)
- Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, 80134 Naples, Italy
| | - Barbara Lombardo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy; (B.M.); (F.B.); (B.L.); (O.S.); (N.T.); (G.F.)
- CEINGE Advanced Biotechnologies, 80145 Naples, Italy
| | - Olga Scudiero
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy; (B.M.); (F.B.); (B.L.); (O.S.); (N.T.); (G.F.)
- CEINGE Advanced Biotechnologies, 80145 Naples, Italy
| | - Nadia Tinto
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy; (B.M.); (F.B.); (B.L.); (O.S.); (N.T.); (G.F.)
- CEINGE Advanced Biotechnologies, 80145 Naples, Italy
| | - Giuseppe Limongelli
- Monaldi Hospital, AO Colli, 80131 Naples, Italy; (M.C.); (G.L.)
- Department of Translational Medical Sciences, University of Campania “Luigi Vanvitelli”, 80134 Naples, Italy
| | - Giulia Frisso
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico II, 80131 Naples, Italy; (B.M.); (F.B.); (B.L.); (O.S.); (N.T.); (G.F.)
- CEINGE Advanced Biotechnologies, 80145 Naples, Italy
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