Zhejiang Key Laboratory of Pathophysiology, Department of Biochemistry and Molecular Biology, Health Science Center, Ningbo University, Ningbo 315211, China
This work was supported by grants from the Ningbo University “Medical Faculty core curriculum construction” Project, The National Natural Science Foundation of China (32270821), the Natural Science Foundation of Ningbo (2021J065), the K.C.Wong Magna Fund in Ningbo University, and the Student Research and Innovation Program of Ningbo University (2023SRIP1913).
Macrophages, existed in almost all organs of the body, are responsible for detecting tissue injury, pathogens, playing a key role in host defense against a variety of invading pathogens triggering inflammatory responses, and emerging evidence suggests that macrophage-mediated immune responses are efficiently regulated by the ubiquitination modification, which is responsible for normal immune responses. However, numerous studies indicates that the aberrant activation or inhibition of macrophage-mediated immune responses occurs in inflammation, mainly caused by dysregulated ubiquitination modification due to E3 ubiquitin ligases mutations or abnormal expression. Notably, E3 ubiquitin ligases, responsible for recognizing the substrates, are key enzymes in the ubiquitin-proteasome system (UPS) composed of ubiquitin (Ub), ubiquitin-activating E1 enzymes, ubiquitin-conjugating E2 enzymes, E3 ubiquitin ligases, 26S proteasome, and deubiquitinating enzymes. Intriguingly, several E3 ubiquitin ligases are involved in the regulation of some common signal pathways in macrophage-mediated inflammation, including Toll-like receptors (TLRs), nucleotide-binding oligomerization domain (NOD)-like receptors (NLRs), RIG-I-like receptors (RLRs), C-type lectin receptors (CLRs) and the receptor for advanced glycation end products (RAGE). Herein, we summarized the physiological and pathological roles of E3 ligases in macrophage-mediated inflammation, as well as the inhibitors and agonists targeting E3 ligases in macrophage-mediated inflammation, providing the new ideas for targeted therapies in macrophage-mediated inflammation caused aberrant function of E3 ligases.
JIN Jia-Bei, GE Yi-Dong, JIN Xiao-Feng. The Role of E3 Ligases in Macrophage-mediated Inflammation[J]. Progress in Biochemistry and Biophysics,2024,51(9):2037-2060
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