[Problem]
To provide a novel expression vector capable of effectively expressing a target protein in mitochondria and suppressing undesirable expression of the target protein in cell organelles other than mitochondria.
[Solution]
The present invention provides a recombinant expression vector for expressing a target protein in mitochondria of animal cells, and a lipid membrane structure having the vector encapsulated therein, wherein the recombinant expression vector has a promoter sequence exhibiting a transcription activity in the nuclei of animal cells, and has, under the control of the promoter sequence, a coding region which codes a target protein and includes one or more TGAs as codons corresponding to tryptophan. The recombinant expression vector according to the present invention can more efficiently and selectively express a target protein in mitochondria, and can be used as a more safe and effective drug for treating mitochondrial diseases.
问题
提供一种新型表达载体,该载体能够在线粒体中有效表达目标蛋白,并抑制目标蛋白在线粒体以外的细胞器中的不良表达。
[解决方案]
本发明提供了一种用于在动物细胞线粒体中表达目的蛋白的
重组表达载体,以及一种将该载体封装在其中的脂膜结构,其中
重组表达载体具有在动物细胞核中表现出转录活性的启动子序列,并且在启动子序列的控制下具有编码目的蛋白的编码区,该编码区包括一个或多个作为与色
氨酸相对应的密码子的TGA。根据本发明的
重组表达载体可以更有效、更有选择性地在线粒体中表达目标蛋白,可用作治疗线粒体疾病的更安全有效的药物。