相关实验视频

Updated: Jan 6, 2026

Functional Reconstitution and Channel Activity Measurements of Purified Wildtype and Mutant CFTR Protein

Functional Reconstitution and Channel Activity Measurements of Purified Wildtype and Mutant CFTR Protein

Published on: March 9, 2015

在抑制CFTR无意义突变期间插入的氨基酸的身份,功能后果和上下文影响

Kari Thrasher¹, Jianguo Chen², Lianwu Fu³

¹Departments of Biochemistry & Molecular Genetics, University of Alabama at Birmingham, Birmingham, AL, USA.

Journal of cystic fibrosis : official journal of the European Cystic Fibrosis Society

|September 27, 2025

概括

无稽之谈的抑制疗法可以恢复CFTR蛋白的功能,在囊性纤维化患者早期终止的代码 (PTCs). 将读透与CFTR调节器相结合,有望改善治疗策略.

科学领域:

分子生物学分子生物学
遗传学是一个遗传学.
药理学药理学是指药理学的学科.

背景情况:

囊性纤维化 (CF) 患者具有CFTR无意义等位基因表达很少或不表达CFTR蛋白,使他们对CFTR调节器无反应.
无稽之谈抑制疗法旨在通过启用过早终止子 (PTC) 的翻译阅读来恢复功能性的CFTR蛋白.

研究的目的:

在六个常见的CFTR PTC中调查阅读的机制方面.
评估通过阅读对CFTR蛋白表达,功能和对调节器的响应能力的影响.

主要方法:

评估了六个CFTR PTCs的G418介导读透反应中的CFTR表达和导电性.
利用LC-MS/MS识别CFTR变体蛋白质,这是通过阅读的结果.
鉴定出CFTR变异蛋白的丰富性,处理性,活性和调节器响应性的特征.

主要成果:

在不同PTC中观察到CFTR表达和功能的显著变化,UGA对G418的反应率最高.
在读取过程中加入的氨基酸因PTC和局部mRNA环境而异.
CFTR调节器增强了大多数读透生成变异蛋白的稳定性和活性,许多蛋白质达到野生型CFTR活性水平.

结论:

无意义的抑制疗法,特别是与CFTR调节剂相结合时,对于患有PTC的CF患者具有显著的治疗潜力.
了解读透机制可以指导CF患者无意义突变的改善治疗策略的开发.

关键词:

在CFTR中,CFTR是最重要的.没有意义的抑制抑制.阅读通过阅读.

更多相关视频

Targeting Cysteine Thiols for in Vitro Site-specific Glycosylation of Recombinant Proteins

Targeting Cysteine Thiols for in Vitro Site-specific Glycosylation of Recombinant Proteins

Published on: October 4, 2017

Purification of the Cystic Fibrosis Transmembrane Conductance Regulator Protein Expressed in Saccharomyces cerevisiae

Purification of the Cystic Fibrosis Transmembrane Conductance Regulator Protein Expressed in Saccharomyces cerevisiae

Published on: May 10, 2014

相关概念视频

Mutations

Mutations

Mutations

Mutations

Mutations are changes in the sequence of DNA. These changes can occur spontaneously or they can be induced by exposure to environmental factors. Mutations can be characterized in a number of different ways: whether and how they alter the amino acid sequence of the protein, whether they occur over a small or large area of DNA, and whether they occur in somatic cells or germline cells.
Chromosomal Alterations Are Large-Scale Mutations
While point mutations are changes in a single nucleotide in...

Conserved Binding Sites

Conserved Binding Sites

Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...

Point and Frameshift Mutations

Point and Frameshift Mutations

Point mutations are genetic alterations involving the change of a single nucleotide base pair in DNA. Depending on how the alteration affects protein synthesis, they can lead to various consequences.Point mutations fall into the following types:Silent mutations occur when a nucleotide change does not alter the amino acid sequence due to the redundancy of the genetic code. For instance, changing ACC to ACA still encodes threonine, leaving the protein function unaffected. This occurs because...

Nonsense-mediated mRNA Decay

Nonsense-mediated mRNA Decay

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,...

Protein Complexes with Interchangeable Parts

Protein Complexes with Interchangeable Parts

Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order...