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通过皮下注射gapmer反感 oligonucleotides来减少DUX4和改善肌肉功能

Aiping Zhang¹, Kenji Rowel Q Lim², Ze Chen¹

¹Center for Precision Medicine and Genomic Research, Children's National Hospital, Washington, DC 20010, USA.

Molecular therapy. Nucleic acids

|January 15, 2026

概括

系统输送的gapmer反感性寡核酸有效地降低了DUX4表达在Faccioscapulohumeral肌肉发育不良 (FSHD) 的小鼠模型. 这种治疗改善了肌肉功能,减少了疾病生物标志物,突出了其治疗潜力.

科学领域:

生物化学生物化学
遗传学遗传学是一个
神经学神经学

背景情况:

面肌肌缩症 (FSHD) 是一种遗传性疾病,其特征是双同居蛋白4 (DUX4) 的异常表达.
目前,FSHD没有有效的治疗方法,需要探索新的治疗策略.
之前的研究表明,2'-O-甲乙烯 (2'MOE) 和锁定核酸 (LNA) 间隙反感寡核酸在体外和体内通过肌肉内输送对DUX4敲击的有效性.

研究的目的:

通过全身传递评估gapmer反感性寡核酸对通过全身传递减少DUX4的体内疗效.
评估DUX4 Knockdown在FSHD表达不同水平的DUX4的小鼠模型中的治疗潜力.

主要方法:

在FLExDUX4和ACTA1-MCM;FLExDUX4小鼠模型中,通过皮下注射,对2'MOE和LNA间隙抗感性寡核酸体进行全身注射.
评估DUX4mRNA水平,肌肉功能 (握力),肌肉纤维化和循环中的TGFβ1水平.
在ACTA1-MCM;FLExDUX4模型中,他莫西芬诱导了DUX4的表达.

主要成果:

在FLExDUX4小鼠体内,皮肤下注射的Gapmer显著降低了DUX4mRNA水平,并改善了肌肉握力.
治疗导致肌肉纤维化和循环TGFβ1水平显著下降,接近基线.
在他莫西芬诱导的模型中,2'MOE gapmers有效地减少了DUX4,增强了肌肉功能,并减少了炎症.

结论:

系统性输送gapmer反感性寡核酸是FSHD的一个有前途的治疗策略.
在FSHD小鼠模型中,通过间隙治疗减少DUX4导致表型改善和恢复肌肉功能.
这些发现支持基于gapmer的DUX4降低的潜力,作为治疗 facioscapulohumeral肌肉发育不良的可行治疗方法.

关键词:

D4Z4 D4Z4 D4Z4 D4Z4 D4Z4 D4Z4 D4Z4 D4Z4 DUX4X4 的使用情况这是FSHD的FSHD.MT:寡核酸:疗法和应用.这是一种反意义的寡核酸.盖普梅尔的差距更大.

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