Related Experiment Video
Updated: Feb 6, 2026

09:05
MicroRNA-based Regulation of Picornavirus Tropism
Published on: February 6, 2017
8.0K
Regulation of microRNA function in animals
Luca F R Gebert1, Ian J MacRae2
1Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, CA, USA.
Nature Reviews. Molecular Cell Biology
|August 16, 2018
Summary
MicroRNAs (miRNAs) are small RNAs regulating biological processes and implicated in diseases like cancer. This review explores mechanisms controlling miRNA function, stability, and interactions, highlighting key research questions.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- MicroRNAs (miRNAs) are small, non-coding RNA molecules crucial for regulating gene expression in animals.
- Dysregulation of miRNA networks is linked to various human diseases, especially cancer.
- Recent research has uncovered complex mechanisms governing miRNA function.
Purpose of the Study:
- To review the diverse mechanisms that modulate microRNA activity, stability, and localization.
- To discuss how alternative processing, sequence editing, and protein modifications impact miRNA function.
- To highlight unresolved questions in microRNA research.
Main Methods:
- Literature review of recent discoveries in microRNA biology.
- Analysis of mechanisms controlling miRNA processing and maturation.
- Examination of Argonaute protein modifications and miRNA-target interactions.
Main Results:
- MiRNA function is modulated through alternative processing, sequence editing, and Argonaute protein modifications.
- Viral factors and cytoplasmic transport also influence miRNA activity.
- Regulation of miRNA-target interactions is a key control point.
Conclusions:
- Understanding miRNA regulatory mechanisms is vital for deciphering their role in health and disease.
- Further research is needed to address complex questions regarding miRNA control and function.
- This review provides a comprehensive overview of current knowledge and future research directions.
Related Concept Videos
MicroRNAs
24.2K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After...
24.2K
MicroRNAs
4.0K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
4.0K
Testosterone: Functions and Regulation
2.3K
The intricate hormonal interplay essential for male reproductive health begins with the release of gonadotropin-releasing hormone (GnRH) by the hypothalamus. This hormone prompts the pituitary gland to secrete follicle-stimulating hormone (FSH) and luteinizing hormone (LH). LH targets the Leydig cells in the testes, stimulating them to produce and release testosterone. In concert with testosterone, FSH acts on the Sertoli cells within the seminiferous tubules to facilitate the release of...
2.3K
Regulation of Expression Occurs at Multiple Steps
26.5K
Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
26.5K
GTPases and their Regulation
9.9K
Guanine nucleotide-binding proteins (G-proteins), also known as GTPases, are a superfamily of proteins that regulate many cellular processes, such as cell signaling, vesicular transport, and the regulation of cell shape and motility. Mutation or dysfunction of these proteins can lead to disease. There are around 40,000 known G-proteins that can broadly be classified into two groups ‒ small G-proteins consisting of a single domain and large multi-domain G-proteins.
Large G-proteins,...
Large G-proteins,...
9.9K
Regulated Protein Degradation
8.9K
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells.
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
8.9K

