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RNA Interference

RNA Interference

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...

RNA Interference

RNA Interference

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...

Experimental RNAi

Experimental RNAi

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...

siRNA - Small Interfering RNAs

siRNA - Small Interfering RNAs

Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the ATP-dependent...

piRNA - Piwi-interacting RNAs

piRNA - Piwi-interacting RNAs

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...

Nonsense-mediated mRNA Decay

Nonsense-mediated mRNA Decay

The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...

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Related Experiment Video

Updated: Jun 3, 2026

An Efficient Method for the Isolation of Highly Purified RNA from Seeds for Use in Quantitative Transcriptome Analysis

An Efficient Method for the Isolation of Highly Purified RNA from Seeds for Use in Quantitative Transcriptome Analysis

Published on: January 11, 2017

Stopping RNA interference at the seed.

¹Department of Molecular and Cellular Biology, Beckman Research Institute of the City of Hope, Duarte, California, USA. jrossi@coh.org

Nature Genetics

|March 30, 2011

Summary

This summary is machine-generated.

Scientists developed a novel method to silence entire microRNA (miRNA) families. This breakthrough offers a new therapeutic strategy for diseases linked to miRNA dysregulation.

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Area of Science:

Genetics and Molecular Biology
Epigenetics
Therapeutic Development

Background:

MicroRNAs (miRNAs) are crucial regulators of gene expression, impacting over half of human genes.
Dysregulation of miRNA families is implicated in various human diseases.
Existing methods for miRNA manipulation lack family-specific targeting capabilities.

Discussion:

This study introduces a groundbreaking technique for the selective silencing of entire miRNA families.
The method provides a novel approach to modulating gene expression networks controlled by specific miRNA groups.
This advancement opens new avenues for understanding and treating complex diseases.

Key Insights:

A new method enables the targeted silencing of multiple microRNAs simultaneously.
This family-specific silencing approach offers unprecedented control over gene regulatory networks.
The findings represent a significant step forward in miRNA-based therapeutic strategies.

Outlook:

This technology holds promise for developing novel treatments for genetic disorders and cancers.
Further research could explore the application of this method in diverse therapeutic areas.
The selective silencing of miRNA families could revolutionize personalized medicine.