分支点作为基因疾病外型跳转疗法的潜在目标
Hiroaki Ohara1,2,3,4, Motoyasu Hosokawa1, Tomonari Awaya1,5
1Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan.
Molecular therapy. Nucleic acids
|August 7, 2023
概括
研究人员通过专注于分支点来针对福山先天性肌肉发育不良症 (FCMD) 的异常拼接. 分支点向的反感性寡核酸 (BP-AONs) 成功地恢复了患者细胞中正常的FKTN mRNA和蛋白质生产.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 福山先天性肌肉发育不良 (FCMD) 是由福库丁 (FKTN) 基因的异常拼接引起的.
- 一个特定的变异,c.647+2084G>T,引入了一个伪外显子和过早停止子,导致FCMD.
研究的目的:
- 调查针对FCMD中异常FKTN拼接的治疗策略.
- 探索分支点作为拼接调制的目标的潜力.
主要方法:
- 使用FKTN c.647+2084G>T变体的记者试验对调节剪接的化合物的选.
- 设计和应用分支点向的反感性寡核化物 (BP-AONs) 来调节拼接.
- 通过分析拼接中间体和在FKTN记者基因中产生突变来识别功能分支点.
- 测试BP-AON在患者衍生的髓管中对初始变体和逆转移素诱导的外体捕获变体的疗效.
主要成果:
- 针对分支点的化合物被确定为潜在的治疗剂.
- 在FCMD患者的神经管中,BP-AONs成功地恢复了正常的FKTN mRNA和蛋白质生产.
- 一个功能性的,非冗余的分支点被确定并被BP-AONs有效地阻止.
- 不同的BP-AON也恢复了 retrotransposon诱导的拼接缺陷的神经管中的正常FKTN表达.
结论:
- 分支点代表了一个可行的治疗目标,用于调节遗传疾病中的异常拼接.
- BP-AONs显示出作为治疗FCMD和可能由拼接缺陷引起的其他遗传疾病的异构跳转策略的潜力.
相关概念视频
Alternative RNA Splicing
21.3K
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...
21.3K
Exon Recombination
3.6K
The evolution of new genes is critical for speciation. Exon recombination, also known as exon shuffling or domain shuffling, is an important means of new gene formation. It is observed across vertebrates, invertebrates, and in some plants such as potatoes and sunflowers. During exon recombination, exons from the same or different genes recombine and produce new exon-intron combinations, which might evolve into new genes.
Exon shuffling follows “splice frame rules.” Each exon...
Exon shuffling follows “splice frame rules.” Each exon...
3.6K
Targeted Cancer Therapies
7.7K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.7K
RNA Splicing
56.5K
Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
56.5K
Long-patch Base Excision Repair
7.0K
Since the discovery of the two BER pathways, there has been a debate about how a cell chooses one pathway over the other and the factors determining this selection. Numerous in vitro experiments have pointed out multiple determinants for the sub-pathway selection. These are:
7.0K
Conservative Site-specific Recombination and Phase Variation
6.0K
Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
The recognition sites for Cre recombinase called LoxP...
The recognition sites for Cre recombinase called LoxP...
6.0K


