PMID- 20547193 OWN - NLM STAT- MEDLINE DCOM- 20110131 LR - 20151119 IS - 1879-1166 (Electronic) IS - 0198-8859 (Linking) VI - 71 IP - 9 DP - 2010 Sep TI - Upregulation of human leukocyte antigen-G expression and its clinical significance in ductal breast cancer. PG - 892-8 LID - 10.1016/j.humimm.2010.06.009 [doi] AB - Human leukocyte antigen(HLA)-G could inhibit functions of immune cells and induce regulatory T cells (Treg) and could be involved in antitumor immune responses. In the current study, HLA-G expression in 58 primary breast cancer lesions was analyzed with immunohistochemistry. Plasma soluble HLA-G was detected with enzyme-linked immunosorbent assay in 92 breast cancer patients and in 70 normal healthy donors. The proportion of CD4(+)CD25(+)FoxP3(+) Treg was analyzed with flow cytometry in 64 breast cancer patients and 23 normal controls. HLA-G expression was observed in 70.7% (41/58) of breast cancer lesions. Lesion HLA-G expression was more frequently observed in advanced disease stage (I/II vs III/IV, p = 0.044) and tumor grade (I/II vs III/IV, p = 0.021). sHLA-G was dramatically increased in patients when compared with normal controls (median 82.19 vs 9.65 U/ml, p < 0.001); The area under the receiver operating characteristic (ROC) curve for sHLA-G was 0.953 (95% confidence interval [CI] = 0.926-0.981, p < 0.001). However, sHLA-G was irrelevant to the disease stage and tumor grade. Moreover, CD4(+)CD25(+)FoxP3(+) Treg are markedly increased in the breast cancer patients compared with normal controls (4.46+/-1.36% vs 2.67+/-1.45%, p < 0.001), and the increased frequency of Treg was strongly correlated to sHLA-G levels (R = 0.582, p = 0.001). Our findings indicated that HLA-G could play critical roles in the progression of breast cancer, and plasma sHLA-G levels might be a useful preoperative biomarker for diagnosis. CI - Copyright 2010 American Society for Histocompatibility and Immunogenetics. Published by Elsevier Inc. All rights reserved. FAU - Chen, Hai-Xiao AU - Chen HX AD - Human Tissue Bank, Taizhou Hospital of Zhejiang Province, Wenzhou Medical College, Linhai, Zhejiang, China. FAU - Lin, Aifen AU - Lin A FAU - Shen, Chao-Jun AU - Shen CJ FAU - Zhen, Rui AU - Zhen R FAU - Chen, Bao-Guo AU - Chen BG FAU - Zhang, Xia AU - Zhang X FAU - Cao, Fei-Ling AU - Cao FL FAU - Zhang, Jian-Gang AU - Zhang JG FAU - Yan, Wei-Hua AU - Yan WH LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100612 PL - United States TA - Hum Immunol JT - Human immunology JID - 8010936 RN - 0 (Biomarkers) RN - 0 (FOXP3 protein, human) RN - 0 (Forkhead Transcription Factors) RN - 0 (HLA Antigens) RN - 0 (HLA-G Antigens) RN - 0 (Histocompatibility Antigens Class I) SB - IM MH - Adult MH - Biomarkers/blood MH - Breast Neoplasms/blood/diagnosis/immunology/*metabolism/pathology MH - Carcinoma, Ductal/blood/diagnosis/immunology/*metabolism/pathology MH - Cell Count MH - Cell Membrane/metabolism MH - Cytoplasm/metabolism MH - Female MH - Forkhead Transcription Factors/metabolism MH - HLA Antigens/blood/immunology/*metabolism MH - HLA-G Antigens MH - Histocompatibility Antigens Class I/blood/immunology/*metabolism MH - Humans MH - Middle Aged MH - Neoplasm Staging MH - ROC Curve MH - Sensitivity and Specificity MH - T-Lymphocytes, Regulatory/metabolism/pathology MH - *Up-Regulation EDAT- 2010/06/16 06:00 MHDA- 2011/02/01 06:00 CRDT- 2010/06/16 06:00 PHST- 2010/04/08 00:00 [received] PHST- 2010/06/01 00:00 [revised] PHST- 2010/06/04 00:00 [accepted] PHST- 2010/06/16 06:00 [entrez] PHST- 2010/06/16 06:00 [pubmed] PHST- 2011/02/01 06:00 [medline] AID - S0198-8859(10)00152-7 [pii] AID - 10.1016/j.humimm.2010.06.009 [doi] PST - ppublish SO - Hum Immunol. 2010 Sep;71(9):892-8. doi: 10.1016/j.humimm.2010.06.009. Epub 2010 Jun 12.