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Fumarate integrates metabolism and immunity in diseases
Jie Cheng1, Yifeng Xiao2, Peng Jiang2
1Department of Pathology, School of Basic Medicine, Tongji Medical College and State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Huazhong University of Science and Technology, Wuhan, Hubei, China, 430030; State Key Laboratory of Molecular Oncology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China, 100084.
Abstract:
Fumarate is a key metabolite produced primarily by the tricarboxylic acid (TCA) and urea cycles. In addition to having a metabolic role, its electrophilicity enables it to covalently modify cysteines; moreover, because of its α-ketoglutarate (α-KG)-like structure, it can also act as a competitive inhibitor of α-KG-dependent dioxygenases for epigenetic remodeling. Recent advances have broadened the role of fumarate as a bridge between metabolism and both innate and adaptive immunity, suggesting potentially important functions in anticancer immunity and autoimmune diseases. Here we review the connections between fumarate metabolism and immunity; we describe the mechanisms of fumarate regulation in cancer, autoimmunity, and other diseases; and we explore the clinical implications of fumarate and its esters for immunotherapy.
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