Related Experiment Video
Updated: Jun 18, 2026
09:40
RNAi Screening to Identify Postembryonic Phenotypes in C. elegans
Published on: February 13, 2012
A transgenic approach for RNA interference-based genetic screening in mice.
Shaohua Peng1, J Philippe York, Pumin Zhang
1Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030, USA.
Summary
RNA interference (RNAi) enables genetic screening in mice by inducing gene knockdown via transgenes. This powerful technique, demonstrated in kidney development, allows for multi-generational studies and gene function discovery in mammals.
Area of Science:
- Genetics
- Developmental Biology
- Molecular Biology
Background:
- Genetic screening is crucial for understanding gene function.
- Mammalian genetic screening is limited by long generation times.
- RNA interference (RNAi) offers a potential solution for efficient gene knockdown.
Purpose of the Study:
- To evaluate the feasibility of RNA interference (RNAi) for genetic screening in mice.
- To establish a method for generating heritable gene knockdown in mice using RNAi.
- To identify genes involved in kidney development using an RNAi-based screen.
Main Methods:
- Utilized RNA interference (RNAi) by introducing small hairpin RNA-expressing constructs as transgenes in mice.
- Employed conventional pronuclear injection for generating transgenic mice.
- Conducted a small-scale genetic screen targeting kidney development.
Main Results:
- Successfully generated stable, heritable gene knockdown in mice using RNAi transgenes.
- Demonstrated the transmission of RNAi-induced knockdown across multiple generations.
- Identified a potential role for the Id4 gene in renal medulla formation during kidney development.
Conclusions:
- RNA interference (RNAi) is a feasible and effective tool for genetic screening in mice.
- This RNAi-based approach overcomes the limitations of long generation times in mammalian genetic studies.
- The study highlights the potential of RNAi for uncovering gene function and developmental pathways in mammals.
Related Concept Videos
01:23RNA 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...
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...
01:16In-vitro Mutagenesis
To learn more about the function of a gene, researchers can observe what happens when the gene is inactivated or “knocked out,” by creating genetically engineered knockout animals. Knockout mice have been particularly useful as models for human diseases such as cancer, Parkinson’s disease, and diabetes.
02:15Experimental 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...