超越基因组:揭示针叶 (Syzygium aromaticum L.) 中的特定组织非编码RNA
Nitesh Kumar Sharma1,2, Dwijesh Chandra Mishra1,3, Baibhav Kumar1,2
1Division of Agricultural Bioinformatics, ICAR-Indian Agricultural Statistics Research Institute, New Delhi, 110012 India.
3 Biotech
|March 12, 2025
概括
研究人员在针叶植物中发现了新的长非编码RNA (lncRNAs) 和圆形RNA (circRNAs). 这些非编码RNAs (ncRNAs) 形成了复杂的调节基因表达的网络,为改善爪状特征提供了潜力.
科学领域:
- 植物分子生物学 植物分子生物学
- 基因组学就是基因组学.
- 生物信息学是一种生物信息学.
背景情况:
- (Syzygium aromaticum) 在经济上对食品和医药具有重要意义.
- 非编码RNA (ncRNA) 越来越多地被认为是植物中的调节作用.
- 关于南瓜中ncRNAs的信息有限.
研究的目的:
- 为了识别和表征长非编码RNAs (lncRNAs) 和圆形RNAs (circRNAs) 在南瓜中.
- 阐明涉及这些ncRNAs的调控网络.
- 建立一个关于爪子ncRNAs的全面数据库.
主要方法:
- 对公开可用的RNA测序数据的分析.
- 对lncRNAs,circRNAs及其相互作用的生物信息预测.
- 构建miRNA-lncRNA-mRNA和circRNA-miRNA-mRNA调节网络. 这是一个非常简单的过程.
- 开发了SaroNcRDb网络资源.
主要成果:
- 在南瓜中发现了3274个lncRNA和2404个circRNA.
- 通过miRNA-lncRNA-mRNA相互作用调节的834个基因的识别.
- 预测35个lncRNAs作为17个microRNAs (miRNAs) 的前体.
- 与1047个miRNA和2382个mRNA的circRNA相互作用的表征.
- 开发SaroNcRDb (http://backlin.cabgrid.res.in/saroncrdb/) 来访问ncRNA数据.
结论:
- 克洛夫拥有丰富的lncRNA和circRNA,它们参与了复杂的调节网络.
- 这些ncRNA在转录后基因调节中起着重要作用.
- 该 SaroNcRDb 数据库作为一个有价值的资源,用于未来的研究,在爪ncRNAs及其应用.
相关概念视频
lncRNA - Long Non-coding RNAs
8.4K
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...
8.4K
Small interfering RNAs (siRNA)
3.5K
3.5K
CRISPR and crRNAs
16.4K
Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
16.4K
Cis-regulatory Sequences
9.6K
Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
9.6K
Experimental RNAi
6.0K
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...
6.0K
RNA Splicing
55.9K
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...
55.9K


