Document Type

Article

Publication Date

9-23-2025

Identifier

DOI: 10.1016/j.celrep.2025.116177

Abstract

Upon antigenic stimulation, CD4+T cells undergo clonal expansion elevating their bioenergetic demands and utilization of nutrients like glucose and glutamine. The nuclear factor erythroid-2-related factor 2 (Nrf2) is a well-known regulator of oxidative stress, but its involvement in modulating the metabolism of CD4+T cells remains unexplored. We report that Nrf2 protein levels are temporally regulated in activated CD4+T cells, with elevated expression during early activation followed by a decline. T cell-specific constitutive activation of Nrf2, by deletion of its negative regulator Keap1, enhances early activation and interleukin-2 (IL-2) expression, upregulates T cell receptor (TCR) signaling, and increases activation-driven expansion of CD4+T cells. Mechanistically, elevated Nrf2 activity in activated CD4+T cells increases chromatin accessibility and proliferation-associated gene expression. Metabolically, high Nrf2 alters glucose metabolism and promotes glutamine metabolism via glutaminolysis to support CD4+T cell hyperproliferation. In summary, we elucidate the role of Nrf2 beyond traditional antioxidation in modulating the activation-driven expansion of CD4+T cells by influencing their nutrient metabolism and gene expression.

Journal Title

Cell Rep

Volume

44

Issue

9

First Page

116177

Last Page

116177

PubMed ID

40857154

Keywords

CP: Immunology; CP: Metabolism; T cell activation; T cell expansion; adaptive immune cells; antioxidation; immunometabolism

Comments

Grants and funding

This article is available under the Creative Commons CC-BY-NC-ND license and permits non-commercial use of the work as published, without adaptation or alteration provided the work is fully attributed.

Publisher's Link: https://linkinghub.elsevier.com/retrieve/pii/S2211-1247(25)00948-9

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