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Peroxisomes01:24

Peroxisomes

Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...

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Novel 15-lipoxygenase-1 inhibitor protects cells from RSL3-induced cell death.

Jianqiu Zhang1, Petra E van der Wouden1, Frank J Dekker1

  • 1Department of Chemical and Pharmaceutical Biology, Groningen,Research Institute of Pharmacy (GRIP), University of Groningen, Antonius Deusinglaan 1, 9713, AV, Groningen, the Netherlands.

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Researchers developed a novel inhibitor, 5i, targeting 15-lipoxygenase-1 (15-LOX-1) to block lipid peroxide accumulation. This compound effectively reduced lipid peroxidation and protected cells, offering a new tool for ferroptosis research.

Keywords:
15-lipoxygenase-1 (15-LOX-1)Cell deathIndoleLipid peroxidationLipid peroxides

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Pharmacology

Background:

  • Ferroptosis is a regulated cell death pathway driven by lipid peroxide accumulation.
  • 15-lipoxygenase-1 (15-LOX-1) is a key enzyme in catalyzing lipid peroxidation.
  • Targeting 15-LOX-1 offers a potential strategy to mitigate ferroptosis.

Purpose of the Study:

  • To develop and characterize novel inhibitors of 15-LOX-1.
  • To explore structure-activity relationships of 15-LOX-1 inhibitors.
  • To evaluate the efficacy of a novel inhibitor in preventing ferroptosis.

Main Methods:

  • Synthesis and characterization of a novel 15-LOX-1 inhibitor (compound 5i).
  • In vitro assays to assess 15-LOX-1 enzyme inhibition.
  • Cell-based assays to evaluate lipid peroxidation and cell viability (RSL3-induced cell death).

Main Results:

  • Compound 5i demonstrated potent inhibition of 15-LOX-1 activity.
  • 5i effectively reduced lipid peroxidation levels in vitro.
  • The inhibitor protected cells from RSL3-induced ferroptosis.

Conclusions:

  • A novel and potent 15-LOX-1 inhibitor, 5i, has been successfully developed.
  • Compound 5i serves as a valuable chemical probe for studying ferroptosis.
  • Inhibition of 15-LOX-1 is a viable strategy for controlling ferroptosis.