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Related Concept Videos

Necrosis01:16

Necrosis

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Necrosis is considered as an “accidental” or unexpected form of cell death that ends in cell lysis. The first noticeable mention of “necrosis” was in 1859 when Rudolf Virchow used this term to describe advanced tissue breakdown in his compilation titled “Cell Pathology”.
Morphological Manifestations of Necrosis
Necrotic cells show different types of morphological appearance depending on the type of tissue and infection. In coagulative necrosis, cells become...
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Related Experiment Video

Updated: Jul 4, 2025

Author Spotlight: Tracing the Ferroptotic Signatures and Cell Death Dynamics in Medulloblastoma for Advanced Therapeutics
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7-Dehydrocholesterol dictates ferroptosis sensitivity.

Yaxu Li1,2, Qiao Ran1,2, Qiuhui Duan1,2

  • 1Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China.

Nature
|January 31, 2024
PubMed
Summary
This summary is machine-generated.

Ferroptosis, a cell death process, is regulated by cholesterol biosynthesis. 7-dehydrocholesterol (7-DHC) acts as an anti-ferroptosis metabolite, offering therapeutic potential for cancer and ischemia-reperfusion injury.

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Area of Science:

  • Biochemistry
  • Cell Biology
  • Metabolism

Background:

  • Ferroptosis, an iron-dependent cell death, is linked to diseases like cancer and ischemia-reperfusion injury (IRI).
  • Cholesterol biosynthesis pathways are crucial for cellular function and integrity.

Purpose of the Study:

  • To investigate the role of distal cholesterol biosynthesis enzymes in regulating ferroptosis.
  • To identify key metabolites and pathways involved in ferroptosis control.

Main Methods:

  • Genome-wide CRISPR-Cas9 screening to identify genes regulating ferroptosis.
  • Metabolite analysis to quantify 7-dehydrocholesterol (7-DHC) levels.
  • Pharmacological inhibition and activation of specific enzymes in the cholesterol biosynthesis pathway.

Main Results:

  • Enzymes MSMO1, CYP51A1, EBP, and SC5D suppress ferroptosis, while DHCR7 promotes it.
  • 7-dehydrocholesterol (7-DHC) acts as an endogenous anti-ferroptosis metabolite by preventing phospholipid autoxidation.
  • Inhibition of EBP induces ferroptosis and reduces tumor growth; inhibition of DHCR7 promotes cancer metastasis and attenuates kidney IRI.

Conclusions:

  • 7-dehydrocholesterol (7-DHC) is a natural anti-ferroptosis metabolite.
  • Targeting the 7-DHC biosynthesis pathway offers a promising therapeutic strategy for cancer and IRI.