A highly stable and nonintegrated human artificial chromosome (HAC) containing the 2.4 Mb entire human dystrophin gene.
Episomal vector with the capacity to deliver a large gene containing all the critical regulatory elements is ideal for gene therapy. Human artificial chromosomes (HACs) have the capacity to deliver an extremely large genetic region to host cells without integration into the host genome, thus preventing possible insertional mutagenesis and genomic instability. Duchenne muscular dystrophy (DMD) is caused by mutation in the extremely large dystrophin gene (2.4 Mb). We herein report the development of a HAC vector containing the entire human dystrophin gene (DYS-HAC) that is stably maintained in mice and human immortalized mesenchymal stem cells (hiMSCs). The DYS-HAC was transferred to mouse embryonic stem (ES) cells, and isoforms of the DYS-HAC-derived human dystrophin in the chimeric mice generated from the ES cells were correctly expressed in tissue-specific manner. Thus, this HAC vector containing the entire dystrophin gene with its native regulatory elements is expected to be extremely useful for future gene and cell therapies of DMD.
Hoshiya
Hidetoshi
H
Department of Biomedical Science, Institute of Regenerative Medicine and Biofunction, Graduate School of Medical Science, Tottori University, Yonago, Japan.
Kazuki
Yasuhiro
Y
Abe
Satoshi
S
Takiguchi
Masato
M
Kajitani
Naoyo
N
Watanabe
Yoshinori
Y
Yoshino
Toko
T
Shirayoshi
Yasuaki
Y
Higaki
Katsumi
K
Messina
Graziella
G
Cossu
Giulio
G
Oshimura
Mitsuo
M
D000818:Animals; D002460:Cell Line; D002645:Chickens; D022222:Chromosomes, Artificial, Human / Q000235:genetics*; D016189:Dystrophin / Q000235:genetics*; D005822:Genetic Vectors / Q000235:genetics; D006801:Humans; D020133:Reverse Transcriptase Polymerase Chain Reaction
D016189:Dystrophin