与免疫缺陷相关的 cis 中的复合异合体 NFKB1 误解变体
Manfred Fliegauf1, Kelly Nitschke2, Pavla Mrovecova1
1Institute for Immunodeficiency (IFI), Center for Chronic Immunodeficiency (CCI), Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Clinical immunology (Orlando, Fla.)
|November 7, 2025
概括
在NFKB1基因的致病变体是免疫 (IEI) 的先天性错误的常见原因. 复合异合体NFKB1变体可以通过损害p50蛋白,免疫信号的关键因素,导致严重的免疫缺陷.
科学领域:
- 遗传学 遗传学 是一个
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 异构性致病性NFKB1变体是导致先天性免疫错误 (IEI) 的常见原因,主要影响蛋白质表达.
- NFKB1编码了p105前体蛋白,被加工成p50,对于正规NF-κB1信号传输至关重要,其不足导致免疫缺陷和自身炎症.
研究的目的:
- 评估两种特定的NFKB1误解变体 (Gln50His和Lys52Asn) 在cis.中发现的化合物异构性的影响.
- 了解这些变异单独或组合如何影响p50蛋白功能并导致疾病.
主要方法:
- 在免疫缺陷患者中对NFKB1变异的遗传分析.
- 评估Gln50His和Lys52Asn变体对p50蛋白功能的功能影响.
- 在化合物异构性背景下对病原性影响的评估.
主要成果:
- Gln50His变种加剧了Lys52Asn变种引起的缺陷.
- 这两种变异在cis的综合作用导致了p50蛋白的病原性损伤.
- 这凸显了分析单个变异在基因背景之外的挑战.
结论:
- 对NFKB1变体的复合异构性可能导致显著的致病性蛋白损伤和免疫功能障碍.
- 忽视复合异合体效应,尤其是在根据频率对变异进行过时,可能导致遗漏的免疫天生的错误诊断.
- 遗传背景对于准确评估NFKB1变异的致病性至关重要.
相关概念视频
NF-κB-dependent Signaling Pathway
9.7K
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The...
NF-κB-dependent Signaling Mechanism
The...
9.7K
Cystic Fibrosis: Pathogenesis
693
Cystic fibrosis (CF), an autosomal recessive disorder, significantly affects the function of exocrine glands. This genetically inherited disease is characterized by the production of thick and sticky mucus, which can severely affect various organs and systems in the body.
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
CF is primarily caused by a genetic mutation in a chromosome 7 gene coding for the cystic fibrosis transmembrane conductance regulator (CFTR) protein. The most common gene mutation leading to CF is the ΔF508 mutation,...
693
Immunodeficiency Diseases
1.9K
Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency...
There are three main causes of immunodeficiency...
1.9K
Nonsense-mediated mRNA Decay
11.7K
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,...
11.7K
Protein Complexes with Interchangeable Parts
2.9K
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...
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...
2.9K
Mutations
94.3K
Overview
94.3K


