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Published on: June 12, 2021
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Post-Translational Regulation of CD8+ T Cell Fate and Dysfunction in Tumor Immunity
Zihao Zhou1, Xu Chen1, Nina Li1
1Stomatological Hospital, School of Stomatology, Southern Medical University, Guangzhou, Guangdong, China.
Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|March 12, 2026
Summary
Post-translational modifications (PTMs) regulate CD8+ T cell functions crucial for fighting cancer. Tumor microenvironments reprogram PTMs, leading to T cell dysfunction, but targeting PTMs offers promising cancer immunotherapy strategies.
Area of Science:
- Immunology
- Molecular Biology
- Cancer Research
Background:
- CD8+ T cells are key to antitumor immunity.
- Post-translational modifications (PTMs) rapidly regulate T cell activation, differentiation, and memory.
- PTMs link cellular signals, metabolism, and inflammation to T cell fate.
Purpose of the Study:
- To review how PTMs govern CD8+ T cell lifecycle.
- To discuss PTM reprogramming by the tumor microenvironment.
- To highlight challenges and future directions for targeting PTMs in cancer immunotherapy.
Main Methods:
- Literature review integrating mechanistic understanding of PTM pathways.
- Analysis of PTM roles in CD8+ T cell activation, effector function, memory, and dysfunction.
- Discussion of tumor microenvironment influences on PTM networks.
Main Results:
- PTMs like phosphorylation, ubiquitination, and lactylation precisely control T cell functions.
- Tumor microenvironments induce PTM changes that promote CD8+ T cell dysfunction and immune escape.
- Metabolic alterations in tumors reshape PTM landscapes, impairing T cell fitness.
Conclusions:
- Understanding PTMs is crucial for CD8+ T cell function in cancer.
- Targeting PTMs presents a promising strategy to enhance cancer immunotherapy efficacy.
- Restoring CD8+ T cell antitumor activity via PTM manipulation could improve patient outcomes.
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