NAD+ metabolism-based immunoregulation and therapeutic potential

Jiankai Fang,Wangwang Chen,Pengbo Hou,Zhanhong Liu,Muqiu Zuo,Shisong Liu,Chao Feng,Yuyi Han,Peishan Li,Yufang Shi,C. Shao

Published 2023 in Cell & Bioscience

ABSTRACT

The dynamics of NAD^+ homeostasis is characterized by a balance of synthesis, consumption and regeneration. The role of NAD^+ in immunomodulation is context and signaling pathway specific. The manipulation of NAD^+ bioavailability represents a promising therapeutic strategy for inflammatory diseases. Nicotinamide adenine dinucleotide (NAD^+) is a critical metabolite that acts as a cofactor in energy metabolism, and serves as a cosubstrate for non-redox NAD^+-dependent enzymes, including sirtuins, CD38 and poly(ADP-ribose) polymerases. NAD^+ metabolism can regulate functionality attributes of innate and adaptive immune cells and contribute to inflammatory responses. Thus, the manipulation of NAD^+ bioavailability can reshape the courses of immunological diseases. Here, we review the basics of NAD^+ biochemistry and its roles in the immune response, and discuss current challenges and the future translational potential of NAD^+ research in the development of therapeutics for inflammatory diseases, such as COVID-19.

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