Beyond Cancer: Regulation and Function of PD-L1 in Health and Immune-Related Diseases

被引:24
作者
Beenen, Amke C. [1 ,2 ,3 ]
Sauerer, Tatjana [1 ,2 ,3 ]
Schaft, Niels [1 ,2 ,3 ]
Doerrie, Jan [1 ,2 ,3 ]
机构
[1] Friedrich Alexander Univ Erlangen Nurnberg, Univ Klinikum Erlangen, Dept Dermatol, Hartmannstr 14, D-91052 Erlangen, Germany
[2] Comprehens Canc Ctr Erlangen European Metropolita, Ostl Stadtmauerstr 30, D-91054 Erlangen, Germany
[3] Deutsch Zentrum Immuntherapie DZI, Ulmenweg 18, D-91054 Erlangen, Germany
关键词
PD-L1; non-cancerous tissues; immune checkpoint; PD-1-PD-L1; axis; PROGRAMMED DEATH LIGAND-1; T-CELL RESPONSES; B7-H1; EXPRESSION; B7; FAMILY; DENDRITIC CELLS; UP-REGULATION; PATHWAY; RECEPTOR; INDUCTION; TOLERANCE;
D O I
10.3390/ijms23158599
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Programmed Cell Death 1 Ligand 1 (PD-L1, CD274, B7-H1) is a transmembrane protein which is strongly involved in immune modulation, serving as checkpoint regulator. Interaction with its receptor, Programmed Cell Death Protein 1 (PD-1), induces an immune-suppressive signal, which modulates the activity of T cells and other effector cells. This mediates peripheral tolerance and contributes to tumor immune escape. PD-L1 became famous due to its deployment in cancer therapy, where blockage of PD-L1 with the help of therapeutic antagonistic antibodies achieved impressive clinical responses by reactivating effector cell functions against tumor cells. Therefore, in the past, the focus has been placed on PD-L1 expression and its function in various malignant cells, whereas its role in healthy tissue and diseases apart from cancer remained largely neglected. In this review, we summarize the function of PD-L1 in non-cancerous cells, outlining its discovery and origin, as well as its involvement in different cellular and immune-related processes. We provide an overview of transcriptional and translational regulation, and expression patterns of PD-L1 in different cells and organs, and illuminate the involvement of PD-L1 in different autoimmune diseases as well as in the context of transplantation and pregnancy.
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页数:25
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