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Related Concept Videos

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...
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...

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Related Experiment Video

Updated: Jul 20, 2026

Renal Ischaemia Reperfusion Injury: A Mouse Model of Injury and Regeneration
12:27

Renal Ischaemia Reperfusion Injury: A Mouse Model of Injury and Regeneration

Published on: June 7, 2014

Preventing renal ischemia-reperfusion injury using small interfering RNA by targeting complement 3 gene.

X Zheng1, B Feng, G Chen

  • 1Department of Surgery, University of Western Ontario, London, Ontario, Canada.

American Journal of Transplantation : Official Journal of the American Society of Transplantation and the American Society of Transplant Surgeons
|June 27, 2006
PubMed
Summary

Small interfering RNA (siRNA) effectively silences C3, a key complement system component, significantly reducing kidney injury from ischemia-reperfusion. This novel approach offers a promising strategy for preventing renal IRI.

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Last Updated: Jul 20, 2026

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Published on: May 10, 2022

Area of Science:

  • Immunology
  • Nephrology
  • Molecular Biology

Background:

  • The complement system plays a crucial role in mediating renal ischemia-reperfusion injury (IRI).
  • C3 is the central component of all complement activation pathways, making it a key target for intervention.
  • Understanding C3's role in IRI is vital for developing effective therapeutic strategies.

Purpose of the Study:

  • To investigate the efficacy of small interfering RNA (siRNA) in silencing C3 expression in a mouse model of renal IRI.
  • To determine if C3 silencing inhibits complement activation and mitigates IRI-related kidney damage.
  • To explore the potential of siRNA as a therapeutic approach for preventing renal IRI.

Main Methods:

  • Utilized a mouse model of renal IRI.
  • Employed vector-delivered C3-specific siRNA for in vivo gene silencing.
  • Assessed renal C3 expression, complement-mediated effects, renal function, histopathology, mortality, and TNF-alpha production.

Main Results:

  • Renal C3 expression was upregulated following IRI.
  • Vector-delivered siRNA successfully reduced C3 expression in renal cells in vivo.
  • Systemic siRNA administration attenuated complement-mediated IRI, improving renal function and histopathology.
  • C3 silencing reduced IRI-related mortality and diminished in vivo TNF-alpha production.

Conclusions:

  • Efficient silencing of C3 using siRNA is achievable in a mouse model of renal IRI.
  • siRNA-mediated C3 inhibition effectively reduces complement activation and IRI-related kidney damage.
  • siRNA represents a novel and promising therapeutic strategy for preventing renal IRI in clinical settings like transplantation and acute tubular necrosis.