Role of redoximiRs in fibrogenesis

Marta Fierro-Fernández1, Verónica Miguel1, Santiago Lamas1

  • 1Department of Cell Biology and Immunology, Centro de Biología Molecular "Severo Ochoa" (CBMSO), Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid, Nicolás Cabrera 1, 28049 Madrid, Spain.

Redox Biology
|December 15, 2015
PubMed

Insights

Fibrosis involves excessive extracellular matrix buildup. New research explores how microRNAs (miRNAs) regulating oxidative stress, termed "redoxifibromiRs," impact fibrotic processes.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Genetics

Background:

  • Fibrosis is characterized by excessive extracellular matrix accumulation, leading to tissue scarring and dysfunction.
  • MicroRNAs (miRNAs) are key regulators of gene expression, influencing various biological processes.
  • Oxidative stress is a critical factor in the progression of fibrotic diseases.

Purpose of the Study:

  • To review the mechanisms through which specific microRNAs, termed "redoxifibromiRs," regulate fibrogenesis.
  • To highlight the role of miRNAs in controlling oxidative stress pathways relevant to fibrosis.
  • To introduce the concept of "redoxifibromiRs" as a novel class of fibromiRs.

Main Methods:

  • Literature review of studies on microRNAs, fibrosis, and oxidative stress.
  • Analysis of miRNA-mediated regulation of genes involved in reactive oxygen species (ROS) production and antioxidant defense.
  • Synthesis of current knowledge on the interplay between redox signaling and fibrotic pathways.

Main Results:

  • MicroRNAs (miRNAs) act as potent regulators of fibrotic processes, known as "fibromiRs."
  • Specific miRNAs, termed "redoximiRs," modulate the expression of genes related to oxidative stress.
  • These "redoximiRs" are implicated in the self-perpetuating mechanisms of fibrogenesis.

Conclusions:

  • "RedoxifibromiRs" represent a newly identified class of microRNAs that bridge redox regulation and fibrosis.
  • Understanding "redoxifibromiRs" offers potential therapeutic targets for treating fibrotic diseases.
  • Targeting these "redoxifibromiRs" could disrupt the link between oxidative stress and excessive matrix deposition in fibrosis.

Related Concept Videos

Redox Reactions01:27

Redox Reactions

Redox reactions are vital biochemical processes that underpin energy metabolism in cells. These reactions involve the transfer of electrons between molecules, occurring in tandem as oxidation and reduction. Oxidation refers to the loss of electrons, while reduction denotes their gain. This coupling ensures the seamless flow of electrons through metabolic pathways. For example, in bacterial metabolism, glucose undergoes oxidation to carbon dioxide, while oxygen is simultaneously reduced to...
1.3K
Redox Reactions01:24

Redox Reactions

Oxidation-reduction or redox reactions involve the transfer of electrons from one molecule or atom to another. When an atom gains an electron, another atom must lose an electron, meaning oxidation and reduction must occur together. Since the redox occurs in pairs, the atom that gets oxidized is also called the reducing agent or reductant, and the atom that is reduced is also called the oxidizing agent or oxidant. A straightforward way to remember the definitions of oxidation and reduction is...
59.4K
Bioactivation and Tissue Toxicity01:25

Bioactivation and Tissue Toxicity

Bioactivation is a metabolic process that transforms less reactive substances into highly reactive metabolites, initiating tissue toxicity. This transformation can lead to various toxic effects, including carcinogenesis and teratogenesis. Reactive metabolites are classified into two main types: electrophiles and free radicals.Electrophiles are electron-deficient species and are produced primarily by the enzyme cytochrome P-450 during the metabolism of compounds containing carbon, nitrogen, or...
108
Introduction to Fibroblasts01:09

Introduction to Fibroblasts

Rudolph Virchow discovered spindle-shaped cells called fibroblasts in 1858. Inactive fibroblasts, called fibrocytes, become activated by various stimuli, such as growth factors and inflammatory cytokines. Activated fibroblasts play a crucial role in wound healing, inflammation, formation of new blood vessels, and cancer progression. Uncontrolled activation of fibroblasts results in fibrosis, the excess deposition of fibrous tissue, which can lead to scarring and affect normal organs. This...
4.3K
Oxidation-Reduction Reactions03:11

Oxidation-Reduction Reactions

Oxidation–Reduction Reactions
78.0K
Phase I Oxidative Reactions: Overview01:19

Phase I Oxidative Reactions: Overview

Phase I biotransformation, or functionalization, is a crucial chemical process that converts drugs and other xenobiotics into more water-soluble forms, facilitating expulsion from the body. It involves oxidative, reductive, and hydrolytic reactions that add or unveil polar functional groups on lipophilic substrates. Key players in phase I reactions are the mixed-function oxidases. Situated in liver cell microsomes, these enzymes predominantly carry out drug metabolism. They require molecular...
1000