Chemical treatment enhances skipping of a mutated exon in the dystrophin gene.
Chemical treatment enhances skipping of a mutated exon in the dystrophin gene.
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DOI:
10.1038/ncomms1306
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发表时间:
2011
影响因子:
16.6
通讯作者:
Matsuo, Masafumi
中科院分区:
文献类型:
--
作者:
Nishida, Atsushi;Kataoka, Naoyuki;Takeshima, Yasuhiro;Yagi, Mariko;Awano, Hiroyuki;Ota, Mitsunori;Itoh, Kyoko;Hagiwara, Masatoshi;Matsuo, Masafumi
Duchenne muscular dystrophy (DMD) is a fatal muscle wasting disease caused by a loss of the dystrophin protein. Control of dystrophin mRNA splicing to convert severe DMD to a milder phenotype is attracting much attention. Here we report a dystrophinopathy patient who has a point mutation in exon 31 of the dystrophin gene. Although the mutation generates a stop codon, a small amount of internally deleted, but functional, dystrophin protein is produced in the patient cells. An analysis of the mRNA reveals that the mutation promotes exon skipping and restores the open reading frame of dystrophin. Presumably, the mutation disrupts an exonic splicing enhancer and creates an exonic splicing silencer. Therefore, we searched for small chemicals that enhance exon skipping, and found that TG003 promotes the skipping of exon 31 in the endogenous dystrophin gene in a dose-dependent manner and increases the production of the dystrophin protein in the patient's cells. Duchenne muscular dystrophy is caused by a loss of the dystrophin gene, and control of dystrophin mRNA splicing could aid treatment of the disease. Nishida et al. show that a small molecule promotes skipping of exon 31 and increases production of a functional dystrophin protein in a patient.
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