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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.
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Types of RNA

Types of RNA

Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...

Types of RNA

Types of RNA

Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...

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Light-dependent RNA interference with nucleobase-caged siRNAs.

Vera Mikat¹, Alexander Heckel

¹University of Bonn, LIMES-Life and Medical Sciences, Kekulé-Institute, 53121 Bonn, Germany.

RNA (New York, N.Y.)

|October 24, 2007

Summary

This summary is machine-generated.

Researchers developed light-controllable RNA interference (RNAi) using caged deoxynucleotides in small interfering RNAs (siRNAs). UV light fully reactivated these modified siRNAs, restoring their gene silencing activity.

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Area of Science:

Molecular Biology
Biochemistry
Gene Regulation

Background:

RNA interference (RNAi) is a key tool for post-transcriptional gene silencing.
Controlling RNAi temporally and spatially enhances its applications.
Photolabile protection groups on siRNAs offer a promising control strategy.

Purpose of the Study:

To investigate the impact of photolabile protection groups on siRNA activity.
To develop light-controllable RNAi using caged deoxynucleotides.
To assess the reactivation and efficacy of modified siRNAs after UV irradiation.

Main Methods:

Incorporation of caged deoxynucleotides into siRNAs at specific positions near the mRNA cleavage site.
Assessment of siRNA activity before and after UV light (366 nm) irradiation.
Comparison of reactivated siRNA activity with unmodified counterparts.

Main Results:

Modified siRNAs with caged deoxynucleotides were completely inactive prior to UV exposure.
UV irradiation fully reactivated the siRNAs.
Reactivated siRNAs demonstrated equivalent gene silencing activity to unmodified siRNAs.

Conclusions:

Photolabile protection groups, specifically caged deoxynucleotides, enable light-inducible control of RNAi.
This approach allows for precise temporal and spatial regulation of gene silencing.
The developed method offers a powerful tool for RNAi applications requiring controlled gene silencing.