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Open AccessJournal ArticleDOI

Polyunsaturated fatty acid biosynthesis pathway determines ferroptosis sensitivity in gastric cancer.

TLDR
The expression of elongation of very long-chain fatty acid protein 5 (ELOVL5) and fatty acid desaturase 1 (FADS1) is up-regulated in mesenchymal-type gastric cancer cells (GCs), leading to ferroptosis sensitization, and the polyunsaturated fatty acid (PUFA) biosynthesis pathway plays an essential role in ferroPTosis.
Abstract
Ferroptosis is an iron-dependent regulated necrosis mediated by lipid peroxidation. Cancer cells survive under metabolic stress conditions by altering lipid metabolism, which may alter their sensitivity to ferroptosis. However, the association between lipid metabolism and ferroptosis is not completely understood. In this study, we found that the expression of elongation of very long-chain fatty acid protein 5 (ELOVL5) and fatty acid desaturase 1 (FADS1) is up-regulated in mesenchymal-type gastric cancer cells (GCs), leading to ferroptosis sensitization. In contrast, these enzymes are silenced by DNA methylation in intestinal-type GCs, rendering cells resistant to ferroptosis. Lipid profiling and isotope tracing analyses revealed that intestinal-type GCs are unable to generate arachidonic acid (AA) and adrenic acid (AdA) from linoleic acid. AA supplementation of intestinal-type GCs restores their sensitivity to ferroptosis. Based on these data, the polyunsaturated fatty acid (PUFA) biosynthesis pathway plays an essential role in ferroptosis; thus, this pathway potentially represents a marker for predicting the efficacy of ferroptosis-mediated cancer therapy.

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Citations
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Journal ArticleDOI

O-GlcNAcylation of ZEB1 facilitated mesenchymal pancreatic cancer cell ferroptosis

TL;DR: A novel role of glycolipid metabolism and O-GlcNAcylation in mesenchymal cancer cells ferroptosis susceptibility is identified, which broaden the molecular mechanism of ferroPTosis and suggested a potential clinical therapeutic strategy for refractory tumors.
Journal ArticleDOI

Role of ferroptosis and ferroptosis-related non-coding RNAs in the occurrence and development of gastric cancer

TL;DR: The roles and functions of ferroPTosis and ferroptosis-related ncRNAs in GC tumorigenesis, development, and prognosis are summarized and the future research direction and challenges are prospected.
Journal ArticleDOI

Elucidating the Differences in Metal Toxicity by Quantitative Adverse Outcome Pathways.

TL;DR: This work provided a mechanistic explanation for the differences in metal toxicity where the strong bioaccumulation of Cu enables the newly accumulated Cu to reach the threshold that causes different adverse effects faster than Cd in zebrafish larvae, resulting in a higher toxicity of Cu than that of Cd.
Journal ArticleDOI

Ferroptosis-Driven Nanotherapeutics to Reverse Drug Resistance in Tumor Microenvironment.

TL;DR: Current trends of ferroptosis-driven nanotherapeutics to reverse drug resistance of tumors in anticancer fields at the intersection of cancer biology, materials science, and chemistry are elaborate.
Journal ArticleDOI

Molecular regulatory mechanism of ferroptosis and its role in gastrointestinal oncology: Progress and updates

TL;DR: Current research progress on the mechanism of ferroptosis, current inducers and inhibitors of ferrosynthesis, and the role of ferraptosis in GI tumors are reviewed to propose new methods for the treatment of such tumors.
References
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Journal ArticleDOI

Ferroptosis: An Iron-Dependent Form of Nonapoptotic Cell Death

TL;DR: This paper identified the small molecule ferrostatin-1 as a potent inhibitor of ferroptosis in cancer cells and glutamate-induced cell death in organotypic rat brain slices, suggesting similarities between these two processes.
Journal ArticleDOI

The Cancer Cell Line Encyclopedia enables predictive modelling of anticancer drug sensitivity

TL;DR: The results indicate that large, annotated cell-line collections may help to enable preclinical stratification schemata for anticancer agents and the generation of genetic predictions of drug response in the preclinical setting and their incorporation into cancer clinical trial design could speed the emergence of ‘personalized’ therapeutic regimens.
Journal ArticleDOI

Regulation of Ferroptotic Cancer Cell Death by GPX4

TL;DR: Targeted metabolomic profiling and chemoproteomics revealed that GPX4 is an essential regulator of ferroptotic cancer cell death and sensitivity profiling in 177 cancer cell lines revealed that diffuse large B cell lymphomas and renal cell carcinomas are particularly susceptible to GPx4-regulated ferroPTosis.
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