Intercellular interaction dictates cancer cell ferroptosis via NF2–YAP signalling

Jiao Wu, Alexander M. Minikes, Minghui Gao, Huijie Bian, Yong Li, Brent R. Stockwell, Zhi-Nan Chen () and Xuejun Jiang ()
Additional contact information
Jiao Wu: School of Basic Medicine, Air Force Medical University
Alexander M. Minikes: Memorial Sloan-Kettering Cancer Center
Minghui Gao: Memorial Sloan-Kettering Cancer Center
Huijie Bian: School of Basic Medicine, Air Force Medical University
Yong Li: School of Basic Medicine, Air Force Medical University
Brent R. Stockwell: Columbia University
Zhi-Nan Chen: School of Basic Medicine, Air Force Medical University
Xuejun Jiang: Memorial Sloan-Kettering Cancer Center

Nature, 2019, vol. 572, issue 7769, 402-406

Abstract: Abstract Ferroptosis, a cell death process driven by cellular metabolism and iron-dependent lipid peroxidation, has been implicated in diseases such as ischaemic organ damage and cancer1,2. The enzyme glutathione peroxidase 4 (GPX4) is a central regulator of ferroptosis, and protects cells by neutralizing lipid peroxides, which are by-products of cellular metabolism. The direct inhibition of GPX4, or indirect inhibition by depletion of its substrate glutathione or the building blocks of glutathione (such as cysteine), can trigger ferroptosis3. Ferroptosis contributes to the antitumour function of several tumour suppressors such as p53, BAP1 and fumarase4–7. Counterintuitively, mesenchymal cancer cells—which are prone to metastasis, and often resistant to various treatments—are highly susceptible to ferroptosis8,9. Here we show that ferroptosis can be regulated non-cell-autonomously by cadherin-mediated intercellular interactions. In epithelial cells, such interactions mediated by E-cadherin suppress ferroptosis by activating the intracellular NF2 (also known as merlin) and Hippo signalling pathway. Antagonizing this signalling axis allows the proto-oncogenic transcriptional co-activator YAP to promote ferroptosis by upregulating several ferroptosis modulators, including ACSL4 and TFRC. This finding provides mechanistic insights into the observations that cancer cells with mesenchymal or metastatic property are highly sensitive to ferroptosis8. Notably, a similar mechanism also modulates ferroptosis in some non-epithelial cells. Finally, genetic inactivation of the tumour suppressor NF2, a frequent tumorigenic event in mesothelioma10,11, rendered cancer cells more sensitive to ferroptosis in an orthotopic mouse model of malignant mesothelioma. Our results demonstrate the role of intercellular interactions and intracellular NF2–YAP signalling in dictating ferroptotic death, and also suggest that malignant mutations in NF2–YAP signalling could predict the responsiveness of cancer cells to future ferroptosis-inducing therapies.

Date: 2019
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DOI: 10.1038/s41586-019-1426-6

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