期刊
BIOMATERIALS
卷 136, 期 -, 页码 56-66出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biomaterials.2017.05.016
关键词
Mitochondria; Transgene expression; CMV promotor; Mitochondrial delivery; Hydrodynamic injection
资金
- Ministry of Education, Culture, Sports, Science and Technology, the Japanese Government (MEXT) [26282131, 25560219]
- Uehara Memorial Foundation
- Platform Project for Supporting in Drug Discovery and Life Science Research (Platform for Drug Discovery, Informatics, and Structural Life Science) from Japan Agency for Medical Research and development (AMED) [16am0101007j0005]
- Grants-in-Aid for Scientific Research [26282131, 25560219, 17H02094] Funding Source: KAKEN
Mitochondria have their own gene expression system that is independent of the nuclear system, and control cellular functions in cooperation with the nucleus. While a number of useful technologies for achieving nuclear transgene expression have been reported, only a few have focused on mitochondria. In this study, we validated the utility of an artificial mitochondrial DNA vector with a virus promoter on mitochondrial transgene expression. We designed and constructed pCMV-mtLuc (CGG) that contains a CMV promotor derived from Cytomegalovirus and an artificial mitochondrial genome with a NanoLuc (Nluc) luciferase gene that records adjustments to the mitochondrial codon system. Nluc luciferase activity measurements showed that the pCMV-mtLuc (CGG) efficiently produced the Nluc luciferase protein in human HeLa cells. Moreover, we optimized the mitochondrial transfection of pCMV-mtLuc (CGG) using a MITO-Porter system, a liposome-based carrier for mitochondrial delivery via membrane fusion. As a result, we found that transfection of pCMV-mtLuc (CGG) by MITO-Porter modified with the KALA peptide (cationic amphipathic cell-penetrating peptide) showed a high mitochondrial transgene expression. The developed mitochondrial transgene expression system represents a potentially useful tool for the fields of nanoscience and nanotechnology for controlling the intracellular microenvironment via the regulation of mitochondrial function and promises to open additional innovative research fields of study. (C) 2017 Elsevier Ltd. All rights reserved.
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