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Updated: Dec 17, 2025

Evaluation of Substrate Ubiquitylation by E3 Ubiquitin-ligase in Mammalian Cell Lysates
Published on: May 10, 2022
E3 Ubiquitin Ligases as Immunotherapeutic Target in Atherosclerotic Cardiovascular Disease
Kikkie Poels1, Winnie G Vos1, Esther Lutgens1,2,3
1Department of Medical Biochemistry, Amsterdam Cardiovascular Sciences (ACS), Amsterdam UMC, Location AMC, University of Amsterdam, Amsterdam, Netherlands.
Insights
Targeting T-cell activation via E3 ubiquitin ligases like Cbl-B, Itch, and GRAIL offers a promising strategy to combat residual inflammation in atherosclerosis. These proteins act as natural brakes on T-cell activity, crucial for cardiovascular health.
Area of Science:
- Immunology
- Cardiovascular Medicine
- Molecular Biology
Background:
- Chronic low-grade inflammation is a key driver of atherosclerosis.
- Despite optimal treatment, residual inflammatory risk persists in one-third of patients with atherosclerotic cardiovascular disease.
- T-cells are prevalent in atherosclerotic lesions, making their modulation a potential therapeutic target.
Purpose of the Study:
- To review recent insights into the role of specific E3 ubiquitin ligases in atherosclerosis.
- To explore the therapeutic potential of Cbl-B, Itch, and GRAIL in cardiovascular medicine.
- To highlight novel anti-inflammatory strategies for residual inflammatory risk.
Main Methods:
- Review of current scientific literature on T-cell activation and E3 ubiquitin ligases.
- Analysis of the function of Cbl-B, Itch, and GRAIL in the context of atherosclerosis.
- Exploration of therapeutic implications for cardiovascular disease.
Main Results:
- E3 ubiquitin ligases, including Cbl-B, Itch, and GRAIL, act as natural regulators of T-cell activation.
- These ligases play a significant role in the inflammatory processes underlying atherosclerosis.
- Modulating these ligases presents a potential therapeutic avenue.
Conclusions:
- Targeting E3 ubiquitin ligases offers a novel strategy to address residual inflammatory risk in atherosclerosis.
- Understanding the role of Cbl-B, Itch, and GRAIL in T-cell activation is critical for developing new cardiovascular therapies.
- Further research into these ligases could lead to innovative treatments for atherosclerotic cardiovascular disease.
Abstract:
Chronic low-grade inflammation drives atherosclerosis and despite optimal pharmacological treatment of classical cardiovascular risk factors, one third of the patients with atherosclerotic cardiovascular disease has elevated inflammatory biomarkers. Additional anti-inflammatory strategies to target this residual inflammatory cardiovascular risk are therefore required. T-cells are a dominant cell type in human atherosclerotic lesions. Modulation of T-cell activation is therefore a potential strategy to target inflammation in atherosclerosis. Ubiquitination is an important regulatory mechanism of T-cell activation and several E3 ubiquitin ligases, including casitas B-lineage lymphoma proto-oncogene B (Cbl-B), itchy homolog (Itch), and gene related to anergy in lymphocytes (GRAIL), function as a natural brake on T-cell activation. In this review we discuss recent insights on the role of Cbl-B, Itch, and GRAIL in atherosclerosis and explore the therapeutic potential of these E3 ubiquitin ligases in cardiovascular medicine.
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