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30 September 2022
The roles and targeting options of TRIM family proteins in tumor
Yuxin Zhang
2 more and 
Qianqian Guo
Relationship between TRIMs and NF-κB. TRIM proteins regulate the NF-κB pathway by affecting different target genes and play different roles in different cancers. Degradation of a target gene or protein knockdown is represented by a lightening of the color of the same pattern.TRIM22 binds to IκBα to accelerate the degradation of K48-linked ubiquitination, and forms a complex with IKKγ to promote the ubiquitination of K63 linked ubiquitination, which leads to the phosphorylation of IKKα/β and IκBα and activates the expression of NF-κB. TRIM67 binds to β-TrCP, competitively inhibits the binding of β-TrCP and IκBα, inhibits the degradation of IκBα, and inhibits the expression of NF-κB. TRIM27 interacts with IκBα to ubiquitinate it and inhibit its activity, leading to the activation of NF-κB. TRIM46 can interact with PPAR and activate the NF-κB signaling pathway through ubiquitination of PPAR. TRIM52 specifically activates NF-κB signaling and promotes the expression of TNFα and IL-6. TRIM44 knockdown upregulated CDK19, downregulated MMP1, and impaired TNFα-stimulated NF-κB-mediated transcriptional activity. TRIM39 stabilizes cactin through TNFα and inhibits the NF-κB-mediated signaling pathway.

Tripartite motif (TRIM) containing proteins are a class of E3 ubiquitin ligases, which are critically implicated in the occurrence and development of tumors. They can function through regulating various aspects of tumors, such as tumor proliferation, metastasis, apoptosis and the development of drug resistance during tumor therapy. Some members of TRIM family proteins can mediate protein ubiquitination and chromosome translocation via modulating several signaling pathways, like p53, NF-κB, AKT, MAPK, Wnt/β-catenin and other molecular regulatory mechanisms. The multi-domain nature/multi-functional biological role of TRIMs implies that blocking just one function or one domain might not be sufficient to obtain the desired therapeutic outcome, therefore, a detailed and systematic understanding of the biological functions of the individual domains of TRIMs is required. This review mainly described their roles and underlying mechanisms in tumorigenesis and progression, and it might shade light on a potential targeting strategy for TRIMs in tumor treatment, especially using PROTACs.

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Frontiers in Chemical Biology

Advances of Metal-based Compounds for Therapeutic Applications
Edited by May Lee Low, Nurul Huda Abd Karim, Wenyi Li, Helene C Bertrand
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26 February 2024
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