Abstract
Although the expression of the non-classical HLA class I molecule HLA-G was first reported to be restricted to the fetal–maternal interface on the extravillous cytotrophoblasts, the distribution of HLA-G in normal tissues appears broader than originally described. HLA-G expression was found in embryonic tissues, in adult immune privileged organs, and in cells of the hematopoietic lineage. More interestingly, under pathophysiological conditions HLA-G antigens may be expressed on various types of malignant cells suggesting that HLA-G antigen expression is one strategy used by tumor cells to escape immune surveillance. In this article, we will focus on HLA-G expression in cancers of distinct histology and its association with the clinical course of diseases, on the underlying molecular mechanisms of impaired HLA-G expression, on the immune tolerant function of HLA-G in tumors, and on the use of membrane-bound and soluble HLA-G as a diagnostic or prognostic biomarker to identify tumors and to monitor disease stage, as well as on the use of HLA-G as a novel therapeutic target in cancer.
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Abbreviations
- ALL:
-
Acute lymphoblastic leukemia
- AML:
-
Acute myeloid leukemia
- APC:
-
Antigen-presenting cells
- ARE:
-
AU-rich elements
- β2-m:
-
β2-microglobulin
- BCC:
-
Basal cell carcinoma
- BM:
-
Bone marrow
- cHL:
-
Classical Hodgkin lymphoma
- CLL:
-
Chronic lymphatic leukemia
- CREB:
-
Cyclin AMP-response element binding protein
- COBRA:
-
Combined bisulfite restriction analysis
- CTL:
-
Cyotoxic T lymphocytes
- DAC:
-
5-Aza-2-deoxycytidine
- DC:
-
Dendritic cells
- DLBL:
-
Diffuse large B cell lymphoma
- EBV:
-
Epstein Barr virus
- FAB:
-
French, American, British
- GM-CSF:
-
Granulocyte-macrophage colony stimulating factor
- GVHD:
-
Graft versus host disease
- HDAC:
-
Histone deacetylase
- HIF:
-
Hypoxia inducible factor
- HPV:
-
Human papilloma virus
- HRE:
-
Hypoxia response element
- HRS:
-
Hodgkin Reed Sternberg
- IFN:
-
Interferon
- IHC:
-
Immunohistochemistry
- LCR:
-
Locus control region
- LIF:
-
Leukemia-inhibitory factor
- MDSC:
-
Myeloid-derived suppressor cells
- MHC:
-
Major histocompatibility complex
- miRNA:
-
MicroRNA
- MM:
-
Multiple myeloma
- MMP:
-
Matrix metalloproteinase
- NF-κB:
-
Nuclear factor-κB
- NHL:
-
Non-Hodgkin lymphoma
- NK:
-
Natural killer
- RCC:
-
Renal cell carcinoma
- RREB1:
-
Ras-responsive element binding protein
- SCC:
-
Squamous cell carcinoma
- SIL:
-
Squamous intraepithelial lesions
- sHLA-G:
-
Soluble HLA-G
- SNP:
-
Single nucleotide polymorphism
- TGF-β:
-
Transforming growth factor
- TIL:
-
Tumor-infiltrating lymphocytes
- Treg:
-
Regulatory T cell
- UTR:
-
Untranslated region
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Amiot, L., Ferrone, S., Grosse-Wilde, H. et al. Biology of HLA-G in cancer: a candidate molecule for therapeutic intervention?. Cell. Mol. Life Sci. 68, 417–431 (2011). https://doi.org/10.1007/s00018-010-0583-4
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DOI: https://doi.org/10.1007/s00018-010-0583-4