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TSPAN8 regulates EGFR/AKT pathway to enhance metastasis in gastric cancer

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Abstract

Background

Tetraspanin 8 (TSPAN8), a transmembrane glycoprotein, is implicated in various pathological conditions including human malignancies. However, the roles and underlying mechanisms of TSPAN8 in promoting gastric cancer(GC) progression are yet to be fully understood.

Methods and results

Our study found that TSPAN8 expression was significantly elevated in GC tissues. We also observed a positive correlation between high TSPAN8 expression and various clinicopathological characteristics of GC, including tumor differentiation, invasion depth, lymph node metastasis, and clinical stage. Moreover, the elevated TSPAN8 expression was indicative of poor prognosis. Functionally, we observed that knockdown of TSPAN8 significantly attenuated while overexpression of TSPAN8 promoted GC cell migration and invasion. In vivo experiments, knockdown of TSPAN8 suppressed lung metastasis in nude mice. We further explored the underlying mechanisms of TSPAN8 and found that it regulated EGFR expression in GC cells by accelerating phosphorylation of EGFR and AKT.

Conclusions

Our study reveals that TSPAN8 plays a significant role in promoting tumor metastasis by activating the EGFR/AKT pathway, indicating that it may serve as a promising therapeutic target of gastric cancer.

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Data availability

Data will be made available on request.

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Acknowledgements

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Funding

This research was supported by the National Natural Science Foundation of China (No. 82002919), the Xuzhou Science and Technology Project (KC20101, KC21198) and Jiangsu Province Key Laboratory of Anesthesiology Open Project Fund (XZSYSKF2019023).

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Authors and Affiliations

Authors

Contributions

Qingling Wang and Shibao Li conceived and designed the experiments. Lin Zhang, Yuting Xu, Maojin Zheng and Enmin Cai carried out the operation of the experiment. Lin Zhang, Lei Liu and Zhuo Sun collected and analyzed the data. Lin Zhang and Shibao Li wrote the manuscript and approved the final manuscript.

Corresponding authors

Correspondence to Qingling Wang or Shibao Li.

Ethics declarations

Ethics approval

All animal experiments complied with the ARRIVE guidelines and were carried out in accordance with the National Institutes of Health Guide for the Care and Use of Laboratory Animals. The animal protocol used in this study was reviewed and approved by the Institutional Animal Care and Use Committee of Xuzhou Medical University (No: L20210226419). The study on GC tissues was approved by the Ethics Committee of the Affiliated Hospital of Xuzhou Medical University (XYFY2017-QL007-1). The patient’s informed consent was obtained.

Conflict of interest

All authors declared that they had no potential conflict of interest.

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Lin Zhang, Yuting Xu and Enmin Cai contributed equally to this work.

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Zhang, L., Xu, Y., Cai, E. et al. TSPAN8 regulates EGFR/AKT pathway to enhance metastasis in gastric cancer. Mol Biol Rep 50, 7955–7965 (2023). https://doi.org/10.1007/s11033-023-08662-4

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