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Related Concept Videos

MicroRNAs01:22

MicroRNAs

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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...
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siRNA - Small Interfering RNAs02:30

siRNA - Small Interfering RNAs

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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...
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Experimental RNAi02:15

Experimental RNAi

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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...
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RNA Interference01:23

RNA Interference

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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...
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MicroRNA Gets a Mighty Award.

Yu Li1, Sijie Chen1, Hai Rao2

  • 1Department of Human Cell Biology and Genetics, Joint Laboratory of Guangdong-Hong Kong Universities for Vascular Homeostasis and Diseases, School of Medicine, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|January 21, 2025
PubMed
Summary
This summary is machine-generated.

MicroRNAs (miRNAs) show promise for diagnostics and therapeutics due to their roles in health and disease. Overcoming scientific challenges is key to fully realizing their clinical potential.

Keywords:
RNA biologybiomarkercancermiRNAtherapeutic approach

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Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • MicroRNAs (miRNAs) are small non-coding RNAs with critical roles in gene regulation.
  • Dysregulation of miRNAs is implicated in various physiological and pathological processes.
  • Emerging evidence highlights the diagnostic and therapeutic potential of miRNAs.

Purpose of the Study:

  • To review the discovery, biogenesis, and functions of miRNAs.
  • To explore the clinical applications of miRNAs in diagnostics and therapeutics.
  • To discuss current challenges and future directions in miRNA research.

Main Methods:

  • Literature review of recent advancements in miRNA research.
  • Synthesis of information on miRNA discovery, biogenesis, and function.
  • Analysis of current and potential clinical applications of miRNAs.
  • Identification of scientific and technical challenges in the field.

Main Results:

  • MiRNAs are key regulators of gene expression in both normal and disease states.
  • Significant progress has been made in understanding miRNA biology and function.
  • MiRNAs offer promising avenues for non-invasive diagnostics and targeted therapies.
  • Several scientific and technical hurdles remain in translating miRNA research into clinical practice.

Conclusions:

  • MiRNAs represent a rapidly evolving field with substantial clinical promise.
  • Further research is needed to overcome existing challenges and fully exploit miRNA capabilities.
  • The development of miRNA-based diagnostics and therapeutics is a key future direction.