拟议的通用Nusinersen的比较表征:Oligonucleotide结构的相同性和SMN2分裂活动中的等价性
Serge Taran1, Maksim Smolov1, Maksim Degterev1
1JSC "GENERIUM", 14, Vladimirskaya Street, Volginskiy 601125, Vladimir Region, Russia.
Pharmaceutics
|February 27, 2026
概括
第一个仿制药 nusinersen (GNR-100) 在结构,质量和生物活性方面与参考药物具有很高的相似性. 这使得GNR-100成为脊柱肌肉缩的可比且潜在的具有成本效益的治疗方法.
科学领域:
- 橄核酸的治疗药物
- 药理学 药理学是指药理学的学科.
- 生物化学 生物化学
背景情况:
- 脊髓肌肉缩 (SMA) 是一种罕见的神经肌肉疾病.
- 努辛森是一种反感性RNA寡核酸,它调节SMN2基因剪接,用于SMA治疗.
- GNR-100是 nusinersen 的第一个通用版本.
研究的目的:
- 为了描述GNR-100,第一个通用 nusinersen.
- 根据FDA的指导方针,将GNR-100与参考列出的药物 (RLD) 进行比较.
- 建立GNR-100作为一个潜在的经济有效的治疗替代方案.
主要方法:
- 对关键质量属性的并排比较分析.
- 结构和物理化学特性.
- 在体外基于细胞的SMN基因拼接切换和SMN蛋白活性测试.
主要成果:
- GNR-100在寡核酸结构,物理化学性质和杂质概况方面与RLD具有很高的相似性.
- 结构相同性,类似的更高阶结构和可比的降解抵抗性得到证实.
- 这两种产品在增强 SMA 患者纤维细胞中 SMN2 mRNA 和 SMN 蛋白质的产生方面表现出相似的生物活性.
结论:
- GNR-100与授权的 nusinersen.没有显著差异.
- 该仿制药在结构,物理化学,生物物理和生物学上与RLD相似.
- GNR-100已被确立为SMA患者的潜在经济有效的治疗替代方案.
相关概念视频
Nonsense-mediated mRNA Decay
12.0K
The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
12.0K
Alternative RNA Splicing
25.4K
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
25.4K


