探索小胶质细胞的 VISTA:中枢神经系统炎症中的免疫检查点。
Exploring the VISTA of microglia: immune checkpoints in CNS inflammation.
机构信息
Department of Biomedical Sciences of Cells & Systems, Section Molecular Neurobiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
Department of Microbiology and Immunology, Geisel School of Medicine at Dartmouth, Norris Cotton Cancer Center, Lebanon, NH, USA.
出版信息
J Mol Med (Berl). 2020 Oct;98(10):1415-1430. doi: 10.1007/s00109-020-01968-x. Epub 2020 Aug 27.
Negative checkpoint regulators (NCR) are intensely pursued as targets to modulate the immune response in cancer and autoimmunity. A large variety of NCR is expressed by central nervous system (CNS)-resident cell types and is associated with CNS homeostasis, interactions with peripheral immunity and CNS inflammation and disease. Immunotherapy blocking NCR affects the CNS as patients can develop neurological issues including encephalitis and multiple sclerosis (MS). How these treatments affect the CNS is incompletely understood, since expression and function of NCR in the CNS are only beginning to be unravelled. V-type immunoglobulin-like suppressor of T cell activation (VISTA) is an NCR that is expressed primarily in the haematopoietic system by myeloid and T cells. VISTA regulates T cell quiescence and activation and has a variety of functions in myeloid cells including efferocytosis, cytokine response and chemotaxis. In the CNS, VISTA is predominantly expressed by microglia and macrophages of the CNS. In this review, we summarize the role of NCR in the CNS during health and disease. We highlight expression of VISTA across cell types and CNS diseases and discuss the function of VISTA in microglia and during CNS ageing, inflammation and neurodegeneration. Understanding the role of VISTA and other NCR in the CNS is important considering the adverse effects of immunotherapy on the CNS, and in view of their therapeutic potential in CNS disease.
负性检查点调节剂(NCR)被广泛认为是调节癌症和自身免疫中免疫反应的靶点。中枢神经系统(CNS)驻留细胞类型表达多种 NCR,与 CNS 内稳态、与外周免疫的相互作用以及 CNS 炎症和疾病相关。免疫疗法阻断 NCR 会影响中枢神经系统,因为患者可能会出现包括脑炎和多发性硬化症(MS)在内的神经问题。这些治疗如何影响中枢神经系统尚不完全清楚,因为 NCR 在中枢神经系统中的表达和功能才刚刚开始被揭示。T 细胞活化的 V 型免疫球蛋白样抑制物(VISTA)是一种 NCR,主要由髓样细胞和 T 细胞在造血系统中表达。VISTA 调节 T 细胞静止和激活,并在髓样细胞中具有多种功能,包括吞噬作用、细胞因子反应和趋化性。在中枢神经系统中,VISTA 主要由中枢神经系统的小胶质细胞和巨噬细胞表达。在这篇综述中,我们总结了 NCR 在中枢神经系统健康和疾病中的作用。我们强调了 VISTA 在各种细胞类型和中枢神经系统疾病中的表达,并讨论了 VISTA 在小胶质细胞中的功能以及在中枢神经系统衰老、炎症和神经退行性变中的功能。鉴于免疫疗法对中枢神经系统的不良反应,以及它们在中枢神经系统疾病中的治疗潜力,了解 VISTA 和其他 NCR 在中枢神经系统中的作用非常重要。