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Bucova M, Kluckova K, Kozak J, Rychly B, Suchankova M, Svajdler M, Matejcik V, Steno J, Zsemlye E, Durmanova V. HLA-G 14bp Ins/Del Polymorphism, Plasma Level of Soluble HLA-G, and Association with IL-6/IL-10 Ratio and Survival of Glioma Patients. Diagnostics (Basel) 2022; 12:diagnostics12051099. [PMID: 35626255 PMCID: PMC9139224 DOI: 10.3390/diagnostics12051099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/14/2022] [Accepted: 04/20/2022] [Indexed: 12/15/2022] Open
Abstract
HLA-G is an immune checkpoint molecule with immunosuppressive and anti-inflammatory activities, and its expression and level of its soluble form (sHLA-G) may play an important role in tumor prognosis. The HLA-G 14bp ins/del polymorphism and the plasma level of soluble HLA-G (sHLA-G) were investigated by a polymerase chain reaction and ELISA, respectively, in 59 glioma patients. A significantly higher proportion of glioma patients had the 14 nt insert in both homozygous and heterozygous states compared to the control group. Glioma patients also had higher plasma levels of sHLA-G. Patients with methylated MGMT promoters had lower levels of sHLA-G than those with unmethylated MGMT promoters. The level of sHLA-G negatively correlated with the overall survival of patients. Glioblastoma patients who survived more than one year after diagnosis had lower levels of sHLA-G than those surviving less than one year. Patients with sHLA-G levels below the cut-off value of 40 U/mL survived significantly longer than patients with sHLA-G levels above 40 U/mL. The levels of sHLA-G were also negatively correlated with the level of IL-6 (p = 0.0004) and positively with IL-10/IL-6 (p = 0.046). Conclusion: The presence of the 14 nt insert in both homozygous and heterozygous states of the HLA-G 14bp ins/del polymorphism is more frequent in glioma patients and the elevated plasma levels of sHLA-G are negatively associated with their survival.
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Affiliation(s)
- Maria Bucova
- Faculty of Medicine, Institute of Immunology, Comenius University, 813 72 Bratislava, Slovakia; (K.K.); (M.S.); (E.Z.); (V.D.)
- Correspondence: ; Tel.: +421-59-357-351
| | - Kristina Kluckova
- Faculty of Medicine, Institute of Immunology, Comenius University, 813 72 Bratislava, Slovakia; (K.K.); (M.S.); (E.Z.); (V.D.)
| | - Jan Kozak
- Department of Neurosurgery, Faculty of Medicine, Comenius University and University Hospital, 833 05 Bratislava, Slovakia; (J.K.); (V.M.); (J.S.)
| | - Boris Rychly
- Alpha Medical, Ltd., 841 01 Bratislava, Slovakia;
| | - Magda Suchankova
- Faculty of Medicine, Institute of Immunology, Comenius University, 813 72 Bratislava, Slovakia; (K.K.); (M.S.); (E.Z.); (V.D.)
| | - Marian Svajdler
- Cytopathos Ltd., 831 03 Bratislava, Slovakia;
- Sikl’s Department of Pathology, the Faculty of Medicine and Faculty Hospital in Pilsen, Charles University, 306 05 Pilsen, Czech Republic
| | - Viktor Matejcik
- Department of Neurosurgery, Faculty of Medicine, Comenius University and University Hospital, 833 05 Bratislava, Slovakia; (J.K.); (V.M.); (J.S.)
| | - Juraj Steno
- Department of Neurosurgery, Faculty of Medicine, Comenius University and University Hospital, 833 05 Bratislava, Slovakia; (J.K.); (V.M.); (J.S.)
| | - Eszter Zsemlye
- Faculty of Medicine, Institute of Immunology, Comenius University, 813 72 Bratislava, Slovakia; (K.K.); (M.S.); (E.Z.); (V.D.)
| | - Vladimira Durmanova
- Faculty of Medicine, Institute of Immunology, Comenius University, 813 72 Bratislava, Slovakia; (K.K.); (M.S.); (E.Z.); (V.D.)
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Jiang Y, Lu J, Wu YE, Zhao X, Li L. Genetic variation in the HLA-G 3'UTR 14-bp insertion/deletion and the associated cancer risk: evidence from 25 case-control studies. Biosci Rep 2019; 39:BSR20181991. [PMID: 30962267 PMCID: PMC6509057 DOI: 10.1042/bsr20181991] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 03/29/2019] [Accepted: 04/03/2019] [Indexed: 12/27/2022] Open
Abstract
Human leucocyte antigen-G (HLA-G) plays an important role in the progression of human cancers. A growing number of published studies have investigated the correlation between the HLA-G 3' untranslated region (3'UTR) 14-bp insertion/deletion (Ins/Del) polymorphism and the associated cancer risk in different populations. However, results from previous studies are inconclusive and inconsistent for the different type of cancers. Therefore, we undertook a meta-analysis to assess the effects of the HLA-G 14-bp Ins/Del polymorphism on cancer risk. A systematic literature search was conducted in PubMed, Web of Science, CNKI, VIP, and Wanfang databases to obtain relevant studies up to 28 January 2019. The pooled odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were used. Twenty-five published case-control studies comprising 4981 cases and 6391 controls were included in the current meta-analysis. The results of the overall analysis revealed that the HLA-G 14-bp Ins/Ins genotype and Ins allele were associated with the total cancer risk in the homozygote comparison model (Ins/Ins vs. Del/Del: OR = 0.80, CI = 0.64-1.00; P=0.049) and the allelic comparison model (Ins vs. Del: OR = 0.89, CI = 0.81-0.99; P=0.035), with a protective role. Further subgroup analyses indicated that the HLA-G 14-bp Ins/Del polymorphism was associated with the risk of breast cancer and oesophageal cancer (EC), and significant risk of cancer was also observed in Mixed populations and population-based (PB). The results of our meta-analysis show that the HLA-G 14-bp Ins/Del polymorphism plays an important role in cancer risk, particularly in breast cancer and esophageal cancer in Mixed populations. Additional case-control studies with different types of cancer spanning different ethnicities are needed to extend the present findings.
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Affiliation(s)
- You Jiang
- Department of General Surgery, Hefei Second People's Hospital, Anhui Medical University, Hefei 230011, Anhui, China
| | - Jun Lu
- Department of General Surgery, Hefei Second People's Hospital, Anhui Medical University, Hefei 230011, Anhui, China
| | - Yue-E Wu
- Department of Electrocardiogram Diagnosis, The Second Affiliated Hospital, Anhui Medical University, Hefei 230060, Anhui, China
| | - Xin Zhao
- Department of Pathology, The First Affiliated Hospital, Anhui Medical University, Hefei 230022, Anhui, China
| | - Liang Li
- Department of General Surgery, Hefei Second People's Hospital, Anhui Medical University, Hefei 230011, Anhui, China
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de Almeida BS, Muniz YCN, Prompt AH, Castelli EC, Mendes-Junior CT, Donadi EA. Genetic association between HLA-G 14-bp polymorphism and diseases: A systematic review and meta-analysis. Hum Immunol 2018; 79:724-735. [PMID: 30102938 DOI: 10.1016/j.humimm.2018.08.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 08/09/2018] [Accepted: 08/09/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND HLA-G is an immune checkpoint molecule. Since a differential molecule expression has been reported even for healthy individuals, many studies have focused on polymorphisms at HLA-G regulatory regions, particularly the 3' untranslated region (3'UTR). The presence/absence of a 14-bp sequence was the first polymorphism described and it is the most studied in association between HLA-G and disorders. METHODS In this study, we performed a systematic review and meta-analysis of all association studies published regarding the HLA-G 14-bp. RESULTS We verified association between 14-bp alleles and diseases in the following situations: (1) presence of 14-bp (insertion) conferred susceptibility to preeclampsia (child alleles evaluated) and systemic lupus erythematosus (OR = 1.42; 95%CI = 1.04-1.93; p = 0.026 and OR = 1.13; 95%CI = 1.01-1.27, p = 0.028); (2) 14-bp absence (deletion) was associated with increased risk to breast cancer (OR = 1.23; 95%CI = 1.06-1.43; p = 0.006) and human Cytomegalovirus infection (OR = 2.06; 95%CI = 1.60-2.64; p < 0.0001); and (3) a risk association was observed between the group of reproductive disorders and the 14-bp insertion (OR = 1.12; 95%CI = 1.01-1.24; p = 0.034). CONCLUSIONS Considering that others 14-bp associations were inconclusive and that other variation sites observed at HLA-G 3'UTR exhibit a proven role on post-transcriptional regulation of HLA-G expression, the complete 3'UTR segment should be analyzed in terms of disease susceptibility, instead of a single polymorphism.
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Affiliation(s)
- Bibiana Sgorla de Almeida
- Divisão de Imunologia Clínica, Departamento de Clínica Médica, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), 14049-900 Ribeirão Preto, SP, Brazil; Laboratório Multiusuário de Estudos em Biologia, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina (UFSC), Florianópolis, Brazil.
| | - Yara Costa Netto Muniz
- Departamento de Biologia Celular, Embriologia e Genética, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina (UFSC), Florianópolis, Brazil.
| | - Alice Heidrich Prompt
- Departamento de Biologia Celular, Embriologia e Genética, Centro de Ciências Biológicas, Universidade Federal de Santa Catarina (UFSC), Florianópolis, Brazil.
| | - Erick C Castelli
- Departamento de Patologia, Faculdade de Medicina de Botucatu, Unesp - Univ. Estadual Paulista, 18618-970 Botucatu, SP, Brazil.
| | - Celso Teixeira Mendes-Junior
- Faculdade de Filosofia Ciências e Letras de Ribeirão Preto (FFCLRP), Universidade de São Paulo (USP), 14049-900 Ribeirão Preto, SP, Brazil.
| | - Eduardo Antonio Donadi
- Divisão de Imunologia Clínica, Departamento de Clínica Médica, Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), 14049-900 Ribeirão Preto, SP, Brazil.
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Tawfeek GAE, Alhassanin S. HLA-G Gene Polymorphism in Egyptian Patients with Non-Hodgkin Lymphoma and its Clinical Outcome. Immunol Invest 2018; 47:315-325. [PMID: 29388862 DOI: 10.1080/08820139.2018.1430826] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Non-Hodgkin lymphoma (NHL) is a major cancer in Egypt and worldwide and has many risk factors including genes involved in the immune response. AIM we investigated the HLA-G 14bp gene polymorphism as a risk factor for NHL and its clinic pathologic features. The study involved 150 patients with NHL and 100 healthy control. Full histories, clinical examination, C.T scan and laboratory investigations such as CBC, LDH, ?2microglobulin and HCV RNA by qualitative real time PCR were performed for all subjects. HLA-G 14bp ins/del gene polymorphism was determined by PCR. RESULTS in our study, del/del, ins/del and dominant genotypes increased the risk of NHL by 11.01, 10.55 and 10.88 fold respectively (p<0.001) but the recessive genotype did not increase the risk of NHL (p=0.112). Cases with the del allele had a greater risk of NHL than those with the ins allele (p<0.001). del/del and ins/del genotypes were significantly associated with higher LDH and ?2microglobulin levels (p<0.001), lower Hb and platelet values (p<0.001), extra nodal sites (p=0.001), poor performance status (p=0.04) and relapse (p=0.001). Conclusions: the results suggest that HLA-G 14bp ins/del gene polymorphism is a risk factor for NHL in our Egyptian population and is associated with poor clinical pathological features. ABBREVIATIONS Non-Hodgkin lymphoma (NHL), Diffuse large B-cell lymphoma (DLBCL), follicular lymphoma (FL), Epstein-Barr virus (EBV), human T-cell lymphotropic/leukemia virus-1 (HTLV-1).
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Affiliation(s)
| | - Suzan Alhassanin
- b Clinical Oncology Department, Faculty of Medicine , Menoufia University , Al Minufiyah , Egypt
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5
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Zhang Y, Yu S, Han Y, Wang Y, Sun Y. Human leukocyte antigen-G expression and polymorphisms promote cancer development and guide cancer diagnosis/treatment. Oncol Lett 2017; 15:699-709. [PMID: 29399142 PMCID: PMC5772757 DOI: 10.3892/ol.2017.7407] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 06/02/2017] [Indexed: 12/11/2022] Open
Abstract
Human leukocyte antigen-G (HLA-G) is a non-classical HLA molecule, predominantly expressed in cytotrophoblast cells to protect the fetus during pregnancy. Notably, a high frequency of HLA-G expression has been observed in a wide variety of cancer types in previous studies. Furthermore, HLA-G expression in cancer has been considered to be detrimental, since it can protect cancer cells from natural killer cell cytotoxic T lymphocyte-mediated destruction, promote tumor spreading and shorten the survival time of patients by facilitating tumor immune evasion. In addition, HLA-G polymorphisms have been investigated in numerous types of cancer and are considered as risk factors and predictive markers of cancer. This review focuses on HLA-G expression and its polymorphisms in cancer, analyzing the mechanisms of HLA-G in promoting cancer development, and evaluating the potential and value of its clinical application as a diagnostic and prognostic biomarker, or even as a prospective therapeutic target in certain types of tumors.
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Affiliation(s)
- Yanwen Zhang
- Department of Oncology, School of Medicine, Shandong University, Jinan, Shandong 250012, P.R. China.,Department of Oncology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China
| | - Shuwen Yu
- Department of Pharmacy, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China
| | - Yali Han
- Department of Oncology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China
| | - Yunshan Wang
- Medical Research and Laboratory Diagnostic Center, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China
| | - Yuping Sun
- Department of Oncology, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China
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Caocci G, Greco M, Arras M, Cusano R, Orrù S, Martino B, Abruzzese E, Galimberti S, Mulas O, Trucas M, Littera R, Lai S, Carcassi C, La Nasa G. HLA-G molecules and clinical outcome in Chronic Myeloid Leukemia. Leuk Res 2017; 61:1-5. [DOI: 10.1016/j.leukres.2017.08.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 06/17/2017] [Accepted: 08/13/2017] [Indexed: 12/22/2022]
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7
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Agnihotri V, Gupta A, Kumar R, Upadhyay AD, Dwivedi S, Kumar L, Dey S. Promising link of HLA-G polymorphism, tobacco consumption and risk of Head and Neck Squamous Cell Carcinoma (HNSCC) in North Indian population. Hum Immunol 2017; 78:172-178. [DOI: 10.1016/j.humimm.2016.12.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2016] [Revised: 11/29/2016] [Accepted: 12/22/2016] [Indexed: 11/16/2022]
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8
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Morandi F, Pozzi S, Carlini B, Amoroso L, Pistoia V, Corrias MV. Soluble HLA-G and HLA-E Levels in Bone Marrow Plasma Samples Are Related to Disease Stage in Neuroblastoma Patients. J Immunol Res 2016; 2016:7465741. [PMID: 27610393 PMCID: PMC5004009 DOI: 10.1155/2016/7465741] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/04/2016] [Accepted: 07/19/2016] [Indexed: 12/25/2022] Open
Abstract
The role of nonclassical HLA-class Ib molecules HLA-G and HLA-E in the progression of Neuroblastoma (NB), the most common pediatric extracranial solid tumor, has been characterized in the last years. Since BM infiltration by NB cells is an adverse prognostic factor, we have here analyzed for the first time the concentration of soluble (s)HLA-G and HLA-E in bone marrow (BM) plasma samples from NB patients at diagnosis and healthy donors. sHLA-G and sHLA-E are present in BM plasma samples, and their levels were similar between NB patients and controls, thus suggesting that these molecules are physiologically released by resident or stromal BM cell populations. This hypothesis was supported by the finding that sHLA-G and sHLA-E levels did not correlate with BM infiltration and other adverse prognostic factors (MYCN amplification and age at diagnosis). In contrast, BM plasma levels of both molecules were higher in patients with metastatic disease than in patients with localized NB, thus suggesting that concentration of these molecules might be correlated with disease progression. The prognostic role of sHLA-G and sHLA-E concentration in the BM plasma for NB patients will be evaluated in future studies, by analyzing the clinical outcome of the same NB patients at follow-up.
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Affiliation(s)
- Fabio Morandi
- Laboratorio di Oncologia, Istituto Giannina Gaslini, Via Gaslini 5, 16147 Genoa, Italy
| | - Sarah Pozzi
- Centro Cellule Staminali, IRCCS AOU San Martino-IST, Largo R. Benzi 10, 16132 Genoa, Italy
| | - Barbara Carlini
- Laboratorio di Oncologia, Istituto Giannina Gaslini, Via Gaslini 5, 16147 Genoa, Italy
| | - Loredana Amoroso
- UOC Oncologia, Istituto Giannina Gaslini, Via Gaslini 5, 16147 Genoa, Italy
| | - Vito Pistoia
- Laboratorio di Oncologia, Istituto Giannina Gaslini, Via Gaslini 5, 16147 Genoa, Italy
| | - Maria Valeria Corrias
- Laboratorio di Oncologia, Istituto Giannina Gaslini, Via Gaslini 5, 16147 Genoa, Italy
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Caocci G, Greco M, Fanni D, Senes G, Littera R, Lai S, Risso P, Carcassi C, Faa G, La Nasa G. HLA-G expression and role in advanced-stage classical Hodgkin lymphoma. Eur J Histochem 2016; 60:2606. [PMID: 27349312 PMCID: PMC4933823 DOI: 10.4081/ejh.2016.2606] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2015] [Revised: 02/11/2016] [Accepted: 02/12/2016] [Indexed: 12/17/2022] Open
Abstract
Non-classical human leucocyte antigen (HLA)-G class I molecules have an important role in tumor immune escape mechanisms. We investigated HLA-G expression in lymphonode biopsies taken from 8 controls and 20 patients with advanced-stage classical Hodgkin lymphoma (cHL), in relationship to clinical outcomes and the HLA-G 14-basepair (14-bp) deletion-insertion (del-ins) polymorphism. Lymphnode tissue sections were stained using a specific murine monoclonal HLA-G antibody. HLA-G protein expression was higher in cHL patients than controls. In the group of PET-2 positive (positron emission tomography carried out after 2 cycles of standard chemotherapy) patients with a 2-year progression-free survival rate (PFS) of 40%, we observed high HLA-G protein expression within the tumor microenvironment with low expression on Hodgkin and Reed-Sternberg (HRS) cells. Conversely, PET-2 negative patients with a PFS of 86% had higher HLA-G protein expression levels on HRS cells compared to the microenvironment. Lower expression on HRS cells was significantly associated with the HLA-G 14-bp ins/ins genotype. These preliminary data suggest that the immunohistochemical pattern of HLA-G protein expression may represent a useful tool for a tailored therapy in patients with cHL, based on the modulation of HLA-G expression in relation to achievement of negative PET-2.
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10
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Dias FC, Castelli EC, Collares CVA, Moreau P, Donadi EA. The Role of HLA-G Molecule and HLA-G Gene Polymorphisms in Tumors, Viral Hepatitis, and Parasitic Diseases. Front Immunol 2015; 6:9. [PMID: 25699038 PMCID: PMC4313582 DOI: 10.3389/fimmu.2015.00009] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 01/07/2015] [Indexed: 12/11/2022] Open
Abstract
Considering that the non-classical HLA-G molecule has well-recognized tolerogenic properties, HLA-G expression is expected to be deleterious when present in tumor cells and in cells chronically infected by viruses, whereas HLA-G expression is expected to be advantageous in autoimmune disorders. The expression of HLA-G on tissue or peripheral blood cells, the levels of soluble HLA-G and polymorphic sites along the gene have been studied in several disorders. In this study, we revised the role of the molecule and polymorphic sites along the HLA-G gene in tumors, viral hepatitis, and parasitic disorders. Overall, several lines of evidence clearly show that the induction of HLA-G expression in tumors has been associated with worse disease outcome and disease spread. In addition, the few studies conducted on hepatitis and parasitic disorders indicate that HLA-G may contribute to disease pathogenesis. Few isolated polymorphic sites, primarily located at the coding or 3′ untranslated HLA-G region, have been evaluated in these disorders, and a complete HLA-G typing together with the study of gene regulatory elements may further help on the understanding of the influence of the genetic background on disease susceptibility.
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Affiliation(s)
- Fabrício C Dias
- Division of Clinical Immunology, Department of Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo , Ribeirão Preto , Brazil
| | - Erick C Castelli
- Department of Pathology, School of Medicine of Botucatu, Universidade Estadual Paulista , Botucatu , Brazil
| | - Cristhianna V A Collares
- Division of Clinical Immunology, Department of Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo , Ribeirão Preto , Brazil
| | - Philippe Moreau
- Research Division in Hematology and Immunology, Institute of Emerging Diseases and Innovative Therapies, Saint-Louis Hospital, CEA , Paris , France
| | - Eduardo A Donadi
- Division of Clinical Immunology, Department of Medicine, Faculty of Medicine of Ribeirão Preto, University of São Paulo , Ribeirão Preto , Brazil
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Genetic polymorphism in HLA-G 3′UTR 14-bp ins/del and risk of cancer: a meta-analysis of case–control study. Mol Genet Genomics 2015; 290:1235-45. [DOI: 10.1007/s00438-014-0985-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 12/30/2014] [Indexed: 10/24/2022]
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12
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13
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Ge YZ, Ge Q, Li MH, Shi GM, Xu X, Xu LW, Xu Z, Lu TZ, Wu R, Zhou LH, Wu JP, Liang K, Dou QL, Zhu JG, Li WC, Jia RP. Association between human leukocyte antigen-G 14-bp insertion/deletion polymorphism and cancer risk: A meta-analysis and systematic review. Hum Immunol 2014; 75:827-32. [DOI: 10.1016/j.humimm.2014.06.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Revised: 06/03/2014] [Accepted: 06/03/2014] [Indexed: 11/27/2022]
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14
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Human leukocyte antigen-G (HLA-G) polymorphism and expression in breast cancer patients. PLoS One 2014; 9:e98284. [PMID: 24870375 PMCID: PMC4037222 DOI: 10.1371/journal.pone.0098284] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 04/29/2014] [Indexed: 12/22/2022] Open
Abstract
Human leukocyte antigen-G (HLA-G) is known to be implicated in a tumor-driven immune escape mechanism in malignancies. The purpose of this study was to investigate HLA-G polymorphism and expression in breast cancer. HLA-G alleles were determined by direct DNA sequencing procedures from blood samples of 80 breast cancer patients and 80 healthy controls. Soluble HLA-G (sHLA-G) was measured by enzyme-linked immunosorbent assay (ELISA) from serum specimens. HLA-G expression in breast cancer lesions was also analyzed by immunohistochemistry staining. The presence of HLA-G 3' untranslated region (UTR) 14-bp sequence was analyzed and found to be associated with reduced risk of breast cancer susceptibility based on HLA-G expression in tissues (P = 0.0407). Levels of sHLA-G were higher in the breast cancer group (median 117.2 U/mL) compared to the control group (median 10.1 U/mL, P<0.001). The area under the receiver operating characteristic curve (AU-ROC) values of sHLA-G for differentiating breast cancer from normal controls and for detecting metastasis from other stages of breast cancer were 0.89 and 0.79, respectively. HLA-G polymorphism and expression may be involved in breast carcinogenesis and sHLA-G concentrations could be used as a diagnostic marker for detecting breast cancer.
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Bortolotti D, Gentili V, Rotola A, Cassai E, Rizzo R, Luca DD. Impact of HLA-G analysis in prevention, diagnosis and treatment of pathological conditions. World J Methodol 2014; 4:11-25. [PMID: 25237627 PMCID: PMC4145573 DOI: 10.5662/wjm.v4.i1.11] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Revised: 12/28/2013] [Accepted: 01/16/2014] [Indexed: 02/06/2023] Open
Abstract
Human leukocyte antigen-G (HLA-G) is a non-classical HLA class I molecule that differs from classical HLA class I molecules by low polymorphism and tissue distribution. HLA-G is a tolerogenic molecule with an immune-modulatory and anti-inflammatory function on both innate and adaptative immunity. This peculiar characteristic of HLA-G has led to investigations of its role in pathological conditions in order to define possible uses in diagnosis, prevention and treatment. In recent years, HLA-G has been shown to have an important implication in different inflammatory and autoimmune diseases, pregnancy complications, tumor development and aggressiveness, and susceptibility to viral infections. In fact, HLA-G molecules have been reported to alternate at both genetic and protein level in different disease situations, supporting its crucial role in pathological conditions. Specific pathologies show altered levels of soluble (s)HLA-G and different HLA-G gene polymorphisms seem to correlate with disease. This review aims to update scientific knowledge on the contribution of HLA-G in managing pathological conditions.
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