Metabolic Regulation of Immune Responses: Molecular Mechanisms, Diseases, and Therapeutic Targets
Chunwei Li , Ziqiang Liu , Dezheng Kong , Zhengze Li , Yiming Yan , Yanyu Dong , Lili Zhu , JiaNing Cao , Zhirui Fan , Gautam Sethi , Lifeng Li
MedComm ›› 2026, Vol. 7 ›› Issue (6) : e70801
Cancer-associated metabolic reprogramming profoundly reshapes the tumor microenvironment (TME), emerging as a central driver of immune evasion and therapeutic resistance. Increasing evidence indicates that metabolic enzymes function not only as bioenergetic regulators but also as active modulators of immune signaling, immune cell fate, and immune checkpoint expression. To elucidate these complex immunometabolic networks, this review utilizes fructose-1,6-bisphosphatase 1 (FBP1)—a key gluconeogenic enzyme—as a paradigmatic metabolic gatekeeper to illustrate how metabolic dysregulation drives tumor progression. By examining both the canonical metabolic effects and noncanonical signaling mechanisms of such enzymes, we synthesize recent advances demonstrating how metabolic rewiring promotes glycolytic reprogramming, immune suppression, and resistance to immunotherapy. Specifically, we explore broad mechanisms of immune evasion, including STAT3–PD-L1 regulation, modulation of innate immune surveillance, T cell exhaustion, and remodeling of stromal and fibrotic tumor niches. Furthermore, we discuss emerging therapeutic strategies targeting these immunometabolic pathways, encompassing small-molecule modulators, vitamin- and gene-based interventions, nanotechnology-enabled delivery systems, and metabolism-informed combination immunotherapy. Finally, we highlight key challenges, including metabolic heterogeneity and context-dependent enzyme function, emphasizing the need for biomarker-guided precision strategies to translate fundamental immunometabolic insights into durable and safe cancer therapies.
immunometabolism / tumor microenvironment / FBP1 / cancer immunotherapy
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2026 The Author(s). MedComm published by Sichuan International Medical Exchange & Promotion Association (SCIMEA) and John Wiley & Sons Australia, Ltd.
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