Related Experiment Video
Updated: Mar 10, 2026

08:25
Identification of Circular RNAs using RNA Sequencing
Published on: November 14, 2019
12.9K
Insights into circular RNA biology
Karoline K Ebbesen1,2, Thomas B Hansen1, Jørgen Kjems1,2
1a Department of Molecular Biology and Genetics (MBG) and Aarhus University , Aarhus , Denmark.
RNA Biology
|December 17, 2016
Summary
Circular RNAs (circRNAs) are unique non-coding RNAs with a closed-loop structure. This review explores their biogenesis, expression regulation, and diverse functions in gene expression modulation.
Area of Science:
- Molecular Biology
- Genetics
- RNA Biology
Background:
- Circular RNAs (circRNAs) are a novel class of non-coding RNA molecules.
- They possess a unique covalently closed-loop structure formed via backsplicing.
- CircRNAs play roles in regulating gene expression, including transcription and miRNA functions.
Purpose of the Study:
- To provide an introduction to the defining characteristics of circRNAs.
- To discuss putative biogenesis pathways and expression modulators of circRNAs.
- To summarize circRNA functions and highlight unanswered questions in circRNA biology.
Main Methods:
- Literature review and synthesis of existing research on circRNAs.
- Discussion of molecular mechanisms underlying circRNA formation and function.
- Exploration of cell type and tissue specificity of circRNA expression.
Main Results:
- CircRNAs exhibit cell type and tissue-specific expression patterns.
- Their expression can be independent of their linear host genes.
- CircRNAs modulate gene expression through various regulatory mechanisms.
Conclusions:
- CircRNA biogenesis and regulation are complex and crucial for their function.
- Further research is needed to fully elucidate the biological roles and therapeutic potential of circRNAs.
- Understanding circRNA biology offers new avenues for gene expression control.
Related Concept Videos
RNA-seq
12.3K
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
12.3K
RNA Interference
28.4K
RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
28.4K
piRNA - Piwi-interacting RNAs
7.8K
PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
7.8K
RNA Structure
8.0K
The basic structure of RNA consists of a string of ribonucleotides attached by phosphodiester bonds. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA) involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three...
8.0K
RNA Structure
79.8K
Overview
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
The basic structure of RNA consists of a five-carbon sugar and one of four nitrogenous bases. Although most RNA is single-stranded, it can form complex secondary and tertiary structures. Such structures play essential roles in the regulation of transcription and translation.
Different Types of RNA Have the Same Basic Structure
There are three main types of ribonucleic acid (RNA): messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). All three RNA types consist of a...
79.8K
Ribosomal RNA Synthesis
15.0K
Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
15.0K

