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Updated: Jun 28, 2026

Tumor Transplantation for Assessing the Dynamics of Tumor-Infiltrating CD8+ T Cells in Mice
Published on: June 12, 2021
Metabolic alterations in the tumor microenvironment influence the anti-tumor immune function of CD8+ T cells via
Yaru Liu1, Wei Du1, Weimin Deng1
1Tianjin Institute of Immunology, Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Diseases and Microenvironment of Ministry of Education of China, Tianjin Medical University, Tianjin, China.
Abstract:
Metabolic reprogramming within the tumor microenvironment (TME) is a pivotal driver of CD8+ T cell dysfunction in cancer. Tumor cells outcompete T cells for essential nutrients, including glucose and amino acids, while accumulating immunosuppressive metabolites such as lactate and 2-hydroxyglutarate. Beyond direct functional impairment, emerging research reveals that these metabolic alterations orchestrate CD8+ T cell transcriptional programs by remodeling their epigenome-via histone modifications, DNA methylation, and non-coding RNA networks-thereby dictating their differentiation, cytotoxic potential, and memory formation. A deeper understanding of how TME-derived metabolic signals shape the epigenetic landscape of CD8+ T cells is crucial for improving current cancer immunotherapeutic strategies. This review systematically delineates how key TME metabolic features, including nutrient deprivation and oncometabolite accumulation, regulate CD8+ T cell fate through epigenetic pathways. Furthermore, we discuss promising therapeutic strategies that target the metabolism-epigenetics axis to reinvigorate CD8+ T cell anti-tumor immunity, offering novel perspectives for enhancing adoptive cell therapy and immune checkpoint blockade.
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