The Journal of Practical Medicine ›› 2024, Vol. 40 ›› Issue (11): 1607-1612.doi: 10.3969/j.issn.1006-5725.2024.11.024

• Reviews • Previous Articles    

Current research status and clinical application progress of the immune checkpoint LAG⁃3 and its targeting drugs

Huinan ZHOU,Kewei QIN,Lijun. ZHOU()   

  1. Central Laboratory,the Sixth Medical Centre,Chinese PLA General Hospital,Beijing 100048,China; The Second School of Clinical Medicine,Southern Medical University,Guangzhou 510515,China
  • Received:2023-09-21 Online:2024-06-10 Published:2024-06-13
  • Contact: Lijun. ZHOU E-mail:hzzhoulj@126.com

Abstract:

Lymphocyte-activation gene 3 (LAG-3) is an inhibitory immune checkpoint receptor that negatively regulates the function of T cells to prevent over-activation of the immune system from damaging human body. In the existence of tumors and chronic infections, persistent antigenic stimulation induces upregulation of LAG-3 expression in effector T cells, leading to T cell exhaustion and tumor immune escape. Targeting LAG-3 drugs can reactivate the anti-tumor function of T cells by specifically blocking the signaling pathway of LAG-3, and have shown promising efficacy in a variety of solid tumors, hematologic tumors and autoimmune diseases. In this paper, we summarize the current research progress on the structure, ligand and regulatory function of LAG-3, review the current status of clinical trials of LAG-3-targeted drugs, and further discuss the clinical application strategy and development direction of LAG-3-targeted drugs, with a view to providing reference for further in-depth research on LAG-3.

Key words: lymphocyte activation gene 3, immune checkpoint, tumor, therapeutic antibody

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