Immunometabolic Regulation of T Cell and Immune Cell Function

Immunometabolic regulation describes how metabolic pathways shape the behaviour, differentiation and effector functions of T cells and other immune cells. On activation, naïve T cells undergo a metabolic switch from quiescent oxidative phosphorylation toward aerobic glycolysis and increased biosynthetic activity to support rapid clonal expansion. Distinct T cell subsets—such as effector, regulatory and memory populations—selectively engage pathways for glucose, lipid and amino acid metabolism to fulfil lineage-specific demands. Metabolites themselves act as signalling molecules, modulating transcription factors and epigenetic marks to guide cell fate. Beyond T lymphocytes, macrophage and dendritic cell functions are likewise tuned by shifts in the tricarboxylic acid cycle, fatty acid oxidation and redox balance. Understanding these processes underpins the global endeavour to manipulate immune responses in cancer, autoimmunity, infection and metabolic disorders, offering routes to improve vaccines, checkpoint blockade and adoptive cell therapies through targeted metabolic interventions.

Research from Nature Portfolio

Recent studies have revealed that early T cell activation depends on a finely regulated lipid-metabolism programme. One foundational investigation demonstrated that mTORC1 signalling induces expression of PPARγ, which directly drives fatty acid uptake and storage in CD4+ T cells. This lipid-reprogramming axis proved essential for full activation and rapid proliferation of both naïve and memory subsets, uncovering a mechanistic link between nutrient sensing and clonal expansion. In parallel, work on nutrient flexibility has shown that effector CD8+ T cells facing glucose scarcity can salvage inosine as an alternative carbon source. Through purine nucleoside phosphorylase, inosine’s ribose moiety feeds central carbon metabolism, sustaining ATP generation and biosynthesis. Supplementing inosine enhanced T cell persistence and boosted the efficacy of immune checkpoint and adoptive therapies in solid tumour models, illustrating a means to circumvent tumour-imposed nutrient restriction.

Immunometabolic Regulation of T Cell and Immune Cell Function publication trend

The graph below shows the total number of articles in immunometabolic regulation of t cell and immune cell function across all publications each year (not limited to Nature Index journals).

Technical terms

Immunometabolism: The study of how metabolic pathways regulate immune cell function and fate.

Glycolysis: The anaerobic breakdown of glucose to pyruvate, providing rapid ATP and intermediates for biosynthesis.

Oxidative phosphorylation: Mitochondrial process generating ATP via the electron transport chain and oxygen consumption.

Fatty acid oxidation (FAO): The catabolism of fatty acids in mitochondria to acetyl-CoA for energy production or biosynthesis.

mTORC1: A nutrient-sensing kinase complex that integrates growth signals to regulate protein synthesis and metabolism.

PPARγ: A nuclear receptor that controls gene expression associated with lipid uptake and storage.

Effector T cells: Activated lymphocytes that execute immune functions such as cytokine secretion or cytotoxicity.

Memory T cells: Long-lived lymphocytes that provide rapid, enhanced responses upon re-encounter with antigen.

Reactive oxygen species (ROS): Chemically reactive molecules derived from oxygen that act as signalling mediators in immune cells.

References

1. Systems Immunology Approaches to Metabolism. Annual Review of Immunology (2023).
2. Fatty acid metabolic reprogramming via mTOR-mediated inductions of PPARγ directs early activation of T cells. Nature Communications (2016).
3. Inosine is an alternative carbon source for CD8+-T-cell function under glucose restriction. Nature Metabolism (2020).
4. Cellular metabolism regulates the differentiation and function of T-cell subsets. Cellular & Molecular Immunology (2024).
5. Redox regulation of the immune response. Cellular & Molecular Immunology (2022).