Abstract
Esophageal squamous cell carcinoma (ESCC) is a prevalent malignancy of the digestive system. Hypoxia is a crucial player in tumor ferroptosis resistance. However, the molecular mechanism of hypoxia-mediated ferroptosis resistance in ESCC remains unclear. Here, USP2 expression was decreased in ESCC cell lines subjected to hypoxia treatment and was lowly expressed in clinical ESCC specimens. Ubiquitin-specific protease 2 (USP2) depletion facilitated cell growth, which was blocked in USP2-overexpressing cells. Moreover, USP2 silencing enhanced the iron ion concentration and lipid peroxidation accumulation as well as suppressed ferroptosis, while upregulating USP2 promoted ferroptotic cell death in ESCC cells. Furthermore, knockout of USP2 in ESCC models discloses the essential role of USP2 in promoting ESCC tumorigenesis and inhibiting ferroptosis. In contrast, overexpression of USP2 contributes to antitumor effect and ferroptosis events in vivo. Specifically, USP2 stably bound to and suppressed the degradation of nuclear receptor coactivator 4 (NCOA4) by eliminating the Lys48-linked chain, which in turn triggered ferritinophagy and ferroptosis in ESCC cells. Our findings suggest that USP2 plays a crucial role in iron metabolism and ferroptosis and that the USP2/NCOA4 axis is a promising therapeutic target for the management of ESCC.

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Data availability
The datasets used and analyzed during the current study are available from the corresponding author upon reasonable request.
Change history
27 June 2025
The original online version of this article was revised: Following the publication of this article, the authors noted that the KYSE410 USP2 image in Figure 5E was mistakenly duplicated with the KYSE150 shNC image in Figure 5E. Additionally, the KYSE150 image 2 in Figure S8G was mistakenly duplicated with the KYSE410 image 4 in Figure 4C. The authors also noted an error in the textual description in the Abstract section. The corrected version is as follows: “Moreover, USP2 silencing decreased the iron ion concentration and lipid peroxidation accumulation as well as suppressed ferroptosis, while upregulating USP2 promoted ferroptotic cell death in ESCC cells.” Furthermore, figure legends for tumor weight data (Figure 8H and Figure S12C) have been revised to clarify that the error bars represent the means with 95% confidence intervals, rather than standard deviations (SD) as previously stated. The corrected versions are as follows:
Fig. 8 USP2 regulates ESCC tumorigenesis in vivo
(H) Representative images of tumors and quantification of tumor weights in nude mice bearing ESCC cells in indicated groups (n = 3). Data are presented as the means with 95% confidence intervals from three independent experiments.
Fig. S12 USP2 regulates ESCC tumorigenesis in vivo
(C) Representative images of tumors and quantification of tumor weights in nude mice bearing ESCC cells in indicated groups (n = 3). Data are presented as the means with 95% confidence intervals from three independent experiments.
The authors confirm this correction does not affect the conclusions of the paper and apologize for any inconvenience caused. The original article has been corrected.
27 June 2025
A Correction to this paper has been published: https://doi.org/10.1038/s41388-025-03443-8
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Acknowledgements
We would like to thank the Core Facility of Jiangsu Provincial People’s Hospital for its help in the detection of experimental samples.
Funding
This work was supported by the Natural Science Foundation of Jiangsu Province (BK20201080), and the National Natural Science Foundation of China (82003228, 82003235, 82102830, 82102831), and the Research project of clinical medical science and technology development fund of Jiangsu University (No:JLY2021097), and the Court-level Natural Science Foundation Project of Jurong People’s Hospital (Nos. JY20221001, JY20231005).
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JS, XD, JZ and QL contributed to the design of the study. JS, JZ, YS, and QG performed the experiments. HC, MZ, CZ and LL analyzed and interpreted the data. JZ, YZ and WW prepared all figures. JS, XD, JZ and QL contributed to the writing and revision of the manuscript. All authors read and approved the final manuscript.
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Song, J., Zhang, J., Shi, Y. et al. Hypoxia inhibits ferritinophagy-mediated ferroptosis in esophageal squamous cell carcinoma via the USP2-NCOA4 axis. Oncogene 43, 2000–2014 (2024). https://doi.org/10.1038/s41388-024-03050-z
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DOI: https://doi.org/10.1038/s41388-024-03050-z
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