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Updated: Feb 28, 2026

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Published on: March 7, 2025
The functions of tumor suppressor PTEN in innate and adaptive immunity
1Department of Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan 430071, China.
Abstract:
The tumor suppressor phosphatase and tensin homolog (PTEN) is a lipid and protein phosphatase that is able to antagonize the PI3K/AKT pathway and inhibit tumor growth. PTEN also possesses phosphatase-independent functions. Genetic alterations of PTEN may lead to the deregulation of cell proliferation, survival, differentiation, energy metabolism and cellular architecture and mobility. Although the role of PTEN in tumor suppression is extensively documented and well established, the evidence for its roles in immunity did not start to accumulate until recently. In this review, we will focus on the newly discovered functions of PTEN in the regulation of innate and adaptive immunity, including antiviral responses.
Insights
The tumor suppressor phosphatase and tensin homolog (PTEN) protein regulates cell growth and has newly discovered roles in immunity. This review explores PTEN
Area of Science:
- Oncology
- Immunology
- Molecular Biology
Background:
- The tumor suppressor phosphatase and tensin homolog (PTEN) is a key regulator of cellular processes.
- PTEN antagonizes the PI3K/AKT pathway, inhibiting tumor growth.
- While PTEN's role in tumor suppression is established, its functions in immunity are recently emerging.
Purpose of the Study:
- To review the recently discovered roles of PTEN in innate and adaptive immunity.
- To highlight PTEN's involvement in antiviral responses.
Main Methods:
- Literature review of studies investigating PTEN's immunological functions.
- Analysis of genetic alterations in PTEN and their impact on cellular pathways.
Main Results:
- PTEN influences cell proliferation, survival, differentiation, metabolism, and mobility.
- Emerging evidence demonstrates PTEN's critical functions in regulating immune responses.
- PTEN plays a role in antiviral immunity.
Conclusions:
- PTEN is a multifunctional protein with significant roles beyond tumor suppression.
- Further research into PTEN's immunological functions is warranted.
- PTEN represents a potential therapeutic target for immune modulation.
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