在异常性肺纤维化中探索 lncRNAs 的潜在功能:从全转录组测序数据分析的见解
Xinran Ma1, Dong Chen2, Chenghai Li3
1People's Hospital of Zhengzhou University, Zhengzhou, China.
Clinics (Sao Paulo, Brazil)
|August 9, 2025
概括
长非编码RNAs (lncRNAs) 与异常性肺纤维化 (IPF) 有关. 这项研究确定了541个差异表达的lncRNA,并发现了可能参与IPF病原和炎症的特定lncRNA.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 肺部医学 肺部医学
背景情况:
- 长非编码RNAs (lncRNAs) 越来越多地被认为是它们在疾病中的作用.
- 在异形性肺纤维化 (IPF) 中 lncRNAs 的特定功能和表达模式在很大程度上仍未被描述.
研究的目的:
- 研究lncRNAs在IPF病变发生过程中的作用和功能.
- 确定IPF的潜在诊断生物标志物和治疗点.
主要方法:
- 在IPF患者和对照组的样本上使用RNA测序 (RNA-seq).
- 进行差异表达分析以识别差异表达的lncRNAs (DElncRNAs).
- 采用权重基因协同表达网络分析 (WGCNA) 和单细胞RNA测序 (scRNA-seq) 来探索lncRNA-mRNA相互作用和细胞表达模式.
主要成果:
- 在IPF中鉴定了541个差异表达的lncRNA (201个上调,340个下调).
- 在DElncRNAs和差异表达mRNAs (DEmRNAs) 之间发现了显著的相关性,在细胞外基质和炎症反应途径中进行了丰富.
- WGCNA强调了与IPF负相关的特定模块 (MEgreen,MEred),揭示了六个关键的lncRNAs (例如FAM13A-AS1,BACH1-IT2) 和它们的共同表达的mRNAs参与炎症.
- 在IPF样本中的多种细胞类型中,scRNA-seq证实了lncRNA-co-expressedmRNAs的失调表达.
结论:
- lncRNAs在IPF中功能性活跃,可能有助于炎症反应.
- 特定的lncRNAs,如FAM13A-AS1和BACH1-IT2,代表了IPF研究中诊断生物标志物和治疗点的有希望的候选人.
相关概念视频
lncRNA - Long Non-coding RNAs
8.9K
In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
8.9K
Ribosome Profiling
3.6K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
3.6K
Non-LTR Retrotransposons
11.9K
As the name suggests, non-LTR retrotransposons lack the long terminal repeats characteristic of the LTR retrotransposons. Additionally, both LTR and non-LTR retrotransposons use distinct mechanisms of mobilization. Non-LTR retrotransposons are further divided into two classes - Long interspersed nuclear elements (LINEs) and short interspersed nuclear elements (SINEs), both of which occur abundantly in most mammals, including humans. Some of the active non-LTR retrotransposons in humans are L1...
11.9K
Experimental RNAi
6.2K
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
6.2K


