Abstract
Purpose
Patients diagnosed with cancer often suffer from emotional stressors, such as anxiety, depression, and fear of death. However, whether fear stress could influence the glioma progression is still unclear.
Methods
Xenograft glioma animal models were established in nude mice. Tumor-bearing mice were subjected to fear stress by living closely with cats and then their depressive behaviors were measured using an open field test. Hematoxylin and eosin staining, the TUNEL staining and immunochemical staining were used to detect the histopathological changes of tumor tissues. Gene expression profiling was used to screen the aberrant gene expression. Methylated RNA immunoprecipitation was used to identify the RNA m6A level. Gene expression was measured by western blot and real-time PCR, respectively.
Results
We found that fear stress promoted glioma tumor progression in mice. Fear stress-induced upregulation of METTL3 and FSP1, increased m6A level of glioma tumor tissues, and inhibited ferroptosis in glioma progression, which were reversed by knockdown of METTL3 and FSP1 in vivo. In addition, we found that when iFSP1 (a ferroptosis inducer by targeting inhibition of FSP1) was introduced to glioma cells, the cells viability of glioma significantly was decreased and ferroptosis was enhanced in glioma cells.
Conclusions
Fear stress-induced upregulation of METTL3 stabilized FSP1 mRNA by m6A modification, leading to tumor progression through inhibition of ferroptosis. Our study provides a new understanding of psychological effects on glioma development, and new insights for glioma therapy.
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Data availability
The data that support the findings of this study are available from the corresponding author upon reasonable request.
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Acknowledgements
We would like to thank all the researchers and study participants for their contributions.
Funding
This work was supported by Education Development Foundation of Henan University (No.: 2019004), Key Scientific and Technological Projects in Henan Province (No. 192102310126).
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SH and JY were responsible for animal and cell experiments, and data analysis. NL, JG, ZS and ZY contributed to animal experiments and partial cell experiments. CB participated in subject design, experimental quality control and paper writing. All of authors read and approved the final manuscript.
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The study was approved by Ethical Committee of Zhengzhou University People’s Hospital and conducted in accordance with the ethical standards.
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Bu, C., Hu, S., Yu, J. et al. Fear stress promotes glioma progression through inhibition of ferroptosis by enhancing FSP1 stability. Clin Transl Oncol 25, 1378–1388 (2023). https://doi.org/10.1007/s12094-022-03032-1
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DOI: https://doi.org/10.1007/s12094-022-03032-1