Dsrna Expression
Dsrna Expression - Related Videos
03:24
RNAi Plating for C. elegans Feeding: A Technique to Induce Target dsRNA Expression in E. coli
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2023
This video describes the principles behind RNAi treatment in C. elegans and demonstrates a protocol to knockdown lin-35 in a transgenic worm strain.
02:37
Detection of Zika Viral dsRNA Replication Intermediates Using Immunocytochemistry
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2026
Source: Contreras, D., et al. Zika Virus Infectious Cell Culture System and the In Vitro Prophylactic Effect of Interferons. J. Vis. Exp. (2016)The video demonstrates the detection of Zika viral dsRNA intermediates in infected epithelial cells using immunocytochemistry. Infected cells are fixed and then blocked with a blocking solution. The primary and secondary antibodies are added. The nuclei are stained with a fluorescent dye. The labeled viral dsRNA is then seen under a fluorescence...
02:29
Culturing and Maintenance of RNAi-Expressing Bacteria
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2025
Source: Anderson, Q. L., et al., A High-throughput, High-content, Liquid-based C. elegans Pathosystem. J. Vis. Exp. (2018)This video demonstrates the preparation of RNA interference (RNAi) bacteria carrying plasmids to inhibit target gene expression. It outlines RNAi bacterial selection, growth, and induction steps to produce dsRNA-expressing plates for downstream assays.
08:30
RNAi Interference by dsRNA Injection into Drosophila Embryos
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Cited by 6 •
2011
RNA interference has been proven very effective to analyze gene function in Drosophila tracheal development. A detailed protocol used by Jiang lab to inject dsRNA into fly embryos to knockdown gene expression is illustrated. This technique has the potential for screening genes required for tissue and organ development in Drosophila.
04:24
Injection of dsRNA into Female A. aegypti Mosquitos
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Cited by 8 •
2007
Reverse genetic approaches have proven extremely useful for determining which genes underly resistance to vector pathogens in mosquitoes. This video protocol illustrates a method used by the James lab to inject dsRNA into female A. aegypti mosquitoes, which harbor the dengue virus. The technique for calibrating injection needles, manipulating the injection setup, and injecting dsRNA into the thorax is illustrated.
FAQs
Complementary RNA strands can be transcribed from engineered constructs so that their matching sequences pair through base pairing. This pairing creates a stable duplex rather than separate single-stranded molecules. The resulting structure provides the molecular form needed for downstream RNA interference studies, allowing researchers to examine how sequence-complementary RNA influences messenger RNA and gene activity.
A single RNA transcript can also generate double-stranded regions by folding back on itself. Complementary sequences within the same molecule pair to form a duplex, creating the structural feature associated with dsRNA activity. This route differs from producing two separate complementary transcripts and helps researchers study how RNA structure contributes to gene-regulatory effects.
In RNA interference, cellular processing converts dsRNA into small interfering RNAs, or siRNAs. These smaller molecules retain sequence information from the original duplex and guide sequence-specific degradation of messenger RNA. As a result, dsRNA expression can connect an engineered or folded RNA structure to a targeted reduction in the corresponding gene transcript.
The two forms represent different stages of the same regulatory pathway. dsRNA provides the duplex input, whereas siRNAs are the smaller products that guide sequence-specific messenger RNA degradation. Separating these roles helps researchers interpret whether an experiment examines RNA production and structure, downstream processing, or the final gene-silencing effect.
A typical study begins with an engineered construct designed to produce complementary RNA sequences or a transcript capable of forming paired regions. After dsRNA expression, researchers examine its connection to siRNA production and sequence-specific messenger RNA degradation. This workflow links RNA design and formation with measurable effects on gene activity and supports functional studies in biology.
Researchers use this approach when they want to connect a chosen RNA sequence with changes in messenger RNA and gene activity. Because RNA interference can produce sequence-specific degradation, the system supports investigations of gene function by testing how targeted transcript loss relates to biological processes. It therefore provides a framework for studying regulatory relationships rather than gene activity in isolation.
In host-pathogen studies, dsRNA expression provides a way to examine sequence-directed regulation within biological defense and infection-related contexts. Researchers can use the resulting RNA interference pathway to investigate how targeted messenger RNA degradation affects host or pathogen-associated processes. The same framework contributes to studies of antiviral responses and potential strategies for targeted gene silencing.