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Journal of Nanobiotechnology

Journal of Nanobiotechnology

IF: 10.6
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PTEN as a prognostic factor for radiotherapy plus immunotherapy response in nasopharyngeal carcinoma

Published:21 April 2025 DOI: 10.1186/s12951-025-03315-z PMID: 40259377
Jiaxing Guo,?Ming Zhang,?Xiaoli Li,?Jiashuo Wang

Abstract

Background: In the context of nasopharyngeal carcinoma (NPC) treatment, radiotherapy combined with immunotherapy (IR?+?RT) is gaining traction. This study focuses on analyzing exosomal proteins, particularly Phosphatase and Tensin Homolog (PTEN), for predicting the efficacy of NPC treatments. Serum samples from NPC patients and IR?+?RT recipients were utilized for exosome (Exo) extraction and subsequent transcriptomic and proteomic analyses to identify treatment-related proteins. Flow cytometry of cells and exosomal analysis were performed to examine these proteins. In vitro experiments using C666-1 cells and their Exos explored various cellular responses, while a murine subcutaneous NPC model investigated the impact of PTEN modulation on tumor growth and the immune microenvironment.

Results: The study demonstrated that PTEN serves as a crucial predictive biomarker, with its expression changes correlated with M2 macrophage polarization and CD8+ T cell activity. This highlights the potential significance of PTEN in predicting treatment outcomes and influencing the immune response in NPC.

Conclusion: The findings suggest that PTEN could play a key role in enhancing the efficacy of NPC radiotherapy and immunotherapy. By shedding light on PTEN's impact on tumor growth and the immune microenvironment, this study lays the groundwork for future personalized therapeutic strategies in NPC treatment.

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