PMID- 37705960 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230916 IS - 2589-0042 (Electronic) IS - 2589-0042 (Linking) VI - 26 IP - 9 DP - 2023 Sep 15 TI - Laeverin/aminopeptidase Q induces indoleamine 2,3-dioxygenase-1 in human monocytes. PG - 107692 LID - 10.1016/j.isci.2023.107692 [doi] LID - 107692 AB - Human extravillous trophoblast (EVT) invades the maternal endometrium and reconstructs uterine spiral arteries cooperatively with maternal immune cells. Although EVT has allogeneic paternal antigens, the maternal immune system does not reject it. Here, we found that laeverin (LVRN), an EVT-specific cell surface peptidase, interacts with monocytes to produce indoleamine 2,3-dioxygenase-1 (IDO1). LVRN-transfected Swan71 cells, a cytotrophoblast-derived cell line, and increased IDO1 expression in PBMC under cell-to-cell interacting conditions. Soluble recombinant LVRN (r-LVRN) interacted with CD14-positive monocytes and induced their IDO1 expression without the intervention of other immune cell populations. LVRN-induced IDO1 production was promoted in PMA-activated monocyte-like THP-1 cells. Furthermore, r-LVRN decreased the tryptophan level and increased the kynurenine/tryptophan ratio in the culture media of the PMA-treated THP-1 cells. These findings suggest that LVRN is one of the key molecules that mediate the interaction between EVT and monocytes/macrophages and creates an immunosuppressive environment at the maternal-fetal interface in the uterus. CI - (c) 2023 The Author(s). FAU - Suzuki, Takuma AU - Suzuki T AD - Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan. FAU - Iizuka, Takashi AU - Iizuka T AD - Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan. FAU - Kagami, Kyosuke AU - Kagami K AD - Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan. FAU - Matsumoto, Takeo AU - Matsumoto T AD - Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan. FAU - Yamazaki, Rena AU - Yamazaki R AD - Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan. FAU - Daikoku, Takiko AU - Daikoku T AD - Division of Animal Disease Model, Research Center for Experimental Modeling of Human Disease, Kanazawa University, Kanazawa, Japan. FAU - Horie, Akihito AU - Horie A AD - Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, Kyoto, Japan. FAU - Ono, Masanori AU - Ono M AD - Department of Obstetrics and Gynecology, Tokyo Medical University, Shinjuku, Tokyo 160-0023, Japan. FAU - Hattori, Akira AU - Hattori A AD - Department of System Chemotherapy and Molecular Sciences, Kyoto University Graduate School of Pharmaceutical Sciences, Kyoto, Japan. FAU - Fujiwara, Hiroshi AU - Fujiwara H AD - Department of Obstetrics and Gynecology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan. LA - eng PT - Journal Article DEP - 20230819 PL - United States TA - iScience JT - iScience JID - 101724038 PMC - PMC10495628 OTO - NOTNLM OT - Developmental biology OT - Embryology OT - Molecular biology COIS- The authors declare no competing interests. EDAT- 2023/09/14 06:43 MHDA- 2023/09/14 06:44 PMCR- 2023/08/19 CRDT- 2023/09/14 04:10 PHST- 2023/03/23 00:00 [received] PHST- 2023/05/23 00:00 [revised] PHST- 2023/08/17 00:00 [accepted] PHST- 2023/09/14 06:44 [medline] PHST- 2023/09/14 06:43 [pubmed] PHST- 2023/09/14 04:10 [entrez] PHST- 2023/08/19 00:00 [pmc-release] AID - S2589-0042(23)01769-8 [pii] AID - 107692 [pii] AID - 10.1016/j.isci.2023.107692 [doi] PST - epublish SO - iScience. 2023 Aug 19;26(9):107692. doi: 10.1016/j.isci.2023.107692. eCollection 2023 Sep 15.