转录基因和网络分析确定共享和独特的途径和免疫变化跨纤维化间歇性肺部疾病
Wenhao Liu1, Kangping Huang1, Xin-Zhuang Yang2
1Eight-Year Program of Clinical Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China.
Aging
|February 13, 2024
概括
这项研究揭示了三种纤维化肺部疾病的共同和独特的分子途径:异常性肺纤维化 (IPF),纤维化过敏性肺炎 (fHP) 和结缔组织疾病相关的ILD (CTD-ILD). 研究结果提供了对这些渐进性肺部疾病的病原和潜在治疗点的见解.
科学领域:
- 肺部医学 肺部医学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 间歇性肺病 (ILD) 包括各种慢性炎症和纤维性肺病.
- 异形性肺纤维化 (IPF),纤维性过敏性肺炎 (fHP) 和结缔组织疾病相关的ILD (CTD-ILD) 分享纤维化,但因原因而异.
- 了解这些ILD的独特机制对于向治疗至关重要.
研究的目的:
- 确定IPF,fHP和CTD-ILD中共享和特定的分子和细胞通路.
- 探索这些独特的ILD亚型中渐进性纤维化的潜在机制.
- 为开发新型治疗策略提供基础.
主要方法:
- 分析了IPF,fHP和CTD-ILD患者纤维化肺组织的转录组数据.
- 进行了功能注释,网络和通路分析.
- xCell解卷算法预测了免疫细胞的透.
主要成果:
- 确定了一种与细胞外矩阵 (ECM) 动态和p53转录因子相关的常见纤维化模块.
- IPF显示了与神经元相关的特定过程;fHP突出显示了B细胞信号和IgA的产生.
- CTD-ILD表现出丰富的化学激素过程,并预测了活性树突细胞 (aDC) 的透.
结论:
- 在IPF,fHP和CTD-ILD中阐明了共享和独特的分子和细胞通路.
- 这些发现增强了对这些纤维性肺部疾病病原学的理解.
- 该研究确定了未来治疗干预的潜在目标.
相关概念视频
Viral Recombination
Cells are sometimes infected by more than one virus at once. When two viruses disassemble to expose their genomes for replication in the same cell, similar regions of their genomes can pair together and exchange sequences in a process called recombination. Alternatively, viruses with segmented genomes can swap segments in a process called reassortment.
Viral Mutations
A mutation is a change in the sequence of bases of DNA or RNA in a genome. Some mutations occur during replication of the genome due to errors made by the polymerase enzymes that replicate DNA or RNA. Unlike DNA polymerase, RNA polymerase is prone to errors because it is not capable of “proofreading” its work. Viruses with RNA-based genomes, like HIV, therefore accrue mutations faster than viruses with DNA-based genomes. Because mutation and recombination provide the raw material for adaptive...
Leaky Scanning
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R stands for...
Exon Recombination
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 has three reading...
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Single Nucleotide Polymorphisms-SNPs
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...


