作者
Taavi Lehto, Alejandra Castillo Alvarez, Sarah Gauck, Michael J Gait, Thibault Coursindel, Matthew JA Wood, Bernard Lebleu, Prisca Boisguerin
发表日期
2014/3/1
期刊
Nucleic Acids Research
卷号
42
期号
5
页码范围
3207-3217
出版商
Oxford University Press
简介
Cell-penetrating peptide-mediated delivery of phosphorodiamidate morpholino oligomers (PMOs) has shown great promise for exon-skipping therapy of Duchenne Muscular Dystrophy (DMD). Pip6a-PMO, a recently developed conjugate, is particularly efficient in a murine DMD model, although mechanisms responsible for its increased biological activity have not been studied. Here, we evaluate the cellular trafficking and the biological activity of Pip6a-PMO in skeletal muscle cells and primary cardiomyocytes. Our results indicate that Pip6a-PMO is taken up in the skeletal muscle cells by an energy- and caveolae-mediated endocytosis. Interestingly, its cellular distribution is different in undifferentiated and differentiated skeletal muscle cells (vesicular versus nuclear). Likewise, Pip6a-PMO mainly accumulates in cytoplasmic vesicles in primary cardiomyocytes, in which clathrin-mediated endocytosis seems to be …
学术搜索中的文章
T Lehto, A Castillo Alvarez, S Gauck, MJ Gait… - Nucleic Acids Research, 2014