PMID- 28653491 OWN - NLM STAT- MEDLINE DCOM- 20180409 LR - 20180627 IS - 1600-0897 (Electronic) IS - 1046-7408 (Linking) VI - 78 IP - 2 DP - 2017 Aug TI - The role of gammadelta-T cells during human pregnancy. LID - 10.1111/aji.12713 [doi] AB - Pregnancy is an evolutionarily important and mysterious process. The placenta, as the nutrient and gas exchange organ, plays an essential role during this process. In addition, the interaction between trophoblast and maternal immune cells at the maternal-fetal interface is also associated with successful pregnancy. Human leukocyte antigen (HLA) molecules on trophoblast cells are involved in protecting the fetus from maternal rejection. Trophoblast cells comprise three subpopulations, including syncytiotrophoblast cells, cytotrophoblast cells, and extravillous trophoblast cells, and these cells express different HLA molecules. Syncytiotrophoblast and extravillous trophoblast cells encounter maternal immune cells from different sources, such as blood or decidua. The increased gammadelta-T cells during human normal pregnancy indicate that these cells may play a role in this process. In peripheral blood, Vgamma9Vdelta2-T cells display cytotoxicity through the recognition of phosphoantigens derived from pathogens. However, HLA-E molecules protect the trophoblast cells from the cytotoxicity of Vgamma9Vdelta2-T cells through binding to the inhibitory receptor, CD94/NKG2A. In decidua, the main Vdelta1-T cells maintain the pregnancy through the secretion of cytokines. In addition, the imbalance between Vgamma9Vdelta2-T and Vdelta1-T cells, and the abnormal expression of the receptors on gammadelta-T cells were observed in adverse pregnancy. CI - (c) 2017 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. FAU - Huang, Chunyu AU - Huang C AD - Department of Paediatric and Adolescent Medicine, Li Ka Shing Faculty of Medicine, the University of Hong Kong, HongKong, China. AD - Shenzhen Key Laboratory of Reproductive Immunology for Peri-implantation, Shenzhen Zhongshan Urology of Hospital, Shenzhen, Guangdong, China. FAU - Zeng, Yong AU - Zeng Y AUID- ORCID: 0000-0002-6264-283X AD - Shenzhen Key Laboratory of Reproductive Immunology for Peri-implantation, Shenzhen Zhongshan Urology of Hospital, Shenzhen, Guangdong, China. FAU - Tu, Wenwei AU - Tu W AD - Department of Paediatric and Adolescent Medicine, Li Ka Shing Faculty of Medicine, the University of Hong Kong, HongKong, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20170627 PL - Denmark TA - Am J Reprod Immunol JT - American journal of reproductive immunology (New York, N.Y. : 1989) JID - 8912860 RN - 0 (HLA Antigens) SB - IM MH - Animals MH - Female MH - HLA Antigens/immunology MH - Humans MH - Intraepithelial Lymphocytes/*immunology MH - Pregnancy/*immunology MH - Trophoblasts/immunology OTO - NOTNLM OT - cytokine OT - human leukocyte antigen OT - killer inhibitory receptor OT - trophoblast OT - gammadelta-T cells EDAT- 2017/06/28 06:00 MHDA- 2018/04/10 06:00 CRDT- 2017/06/28 06:00 PHST- 2017/02/24 00:00 [received] PHST- 2017/05/04 00:00 [accepted] PHST- 2017/06/28 06:00 [pubmed] PHST- 2018/04/10 06:00 [medline] PHST- 2017/06/28 06:00 [entrez] AID - 10.1111/aji.12713 [doi] PST - ppublish SO - Am J Reprod Immunol. 2017 Aug;78(2). doi: 10.1111/aji.12713. Epub 2017 Jun 27.