实用医学杂志 ›› 2024, Vol. 40 ›› Issue (11): 1607-1612.doi: 10.3969/j.issn.1006-5725.2024.11.024

• 综述 • 上一篇    

免疫检查点LAG-3及其靶向药物研究现状和临床应用进展

周慧男,钦可为,周丽君()   

  1. 中国人民解放军总医院第六医学中心耳鼻喉头颈外科医学部研究所(北京 100048);南方医科大学第二临床医学院 (广州 510280 )
  • 收稿日期:2023-09-21 出版日期:2024-06-10 发布日期:2024-06-13
  • 通讯作者: 周丽君 E-mail:hzzhoulj@126.com
  • 基金资助:
    国家自然科学基金资助项目(32170933);北京市自然科学基金资助项目(7242135)

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

摘要:

淋巴细胞激活基因3(lymphocyte-activation gene 3, LAG-3) 是一种抑制性免疫检查点受体,能负向调控T细胞的功能,避免免疫系统过度激活损伤机体。当肿瘤和慢性感染存在时,持续的抗原刺激诱导效应T细胞的LAG-3表达上调进而导致T细胞功能耗竭和肿瘤免疫逃逸。靶向LAG-3药物通过特异性阻断LAG-3的信号通路,能重新激活T细胞的抗肿瘤功能,在多种实体瘤、血液系统肿瘤及自身免疫性疾病中均有很好的疗效。本文总结了当前关于LAG-3的结构,配体和调控功能机制的研究进展,对当前的靶向LAG-3药物临床试验现状进行综述,讨论了LAG-3靶向药物的临床应用策略和发展方向,以期为进一步深入研究LAG-3提供参考。

关键词: 淋巴细胞活化基因3, 免疫检查点, 肿瘤, 治疗性抗体

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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