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Related Concept Videos

Experimental RNAi02:15

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 RNAs02:30

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...
MicroRNAs01:22

MicroRNAs

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...
MicroRNAs01:22

MicroRNAs

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 ends...
RNA Interference01:23

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...
Small interfering RNAs (siRNA)02:30

Small interfering RNAs (siRNA)

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...

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Related Experiment Video

Updated: Jun 19, 2026

Systemic Delivery of MicroRNA Using Recombinant Adeno-associated Virus Serotype 9 to Treat Neuromuscular Diseases in Rodents
06:51

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Published on: August 10, 2018

[Small interfering RNAs targeting human myostatin].

V A Furalev, I V Kravchenko, V O Popov

    Molekuliarnaia Biologiia
    |October 8, 2009
    PubMed
    Summary

    Researchers identified three potent small interfering RNAs (siRNAs) targeting myostatin. These siRNAs effectively reduce myostatin mRNA levels, promoting muscle cell growth and offering potential treatments for muscle wasting conditions.

    Area of Science:

    • Molecular Biology
    • Genetics

    Context:

    • Myostatin is a key regulator of muscle mass.
    • Developing targeted therapies for muscle-wasting diseases is crucial.

    Purpose:

    • To identify and validate effective small interfering RNAs (siRNAs) against human myostatin.
    • To assess the biological activity of synthesized siRNAs in human myoblasts.

    Summary:

    • Ten distinct human myostatin small interfering RNA (siRNA) sequences were synthesized and evaluated.
    • Three siRNAs demonstrated significant biological activity, reducing myostatin mRNA levels to 22-27% of control.
    • These active siRNAs effectively promoted human myoblast proliferation and inhibited differentiation.

    Impact:

    • The identified siRNAs hold promise for novel therapeutic strategies against sarcopenia and myodystrophies.

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  • This research contributes to the development of gene-silencing approaches for muscle-related disorders.