PMID- 33013926 OWN - NLM STAT- MEDLINE DCOM- 20210514 LR - 20210514 IS - 1664-3224 (Electronic) IS - 1664-3224 (Linking) VI - 11 DP - 2020 TI - Dynamic Changes in the Phenotype of Dendritic Cells in the Uterus and Uterine Draining Lymph Nodes After Coitus. PG - 557720 LID - 10.3389/fimmu.2020.557720 [doi] LID - 557720 AB - Dendritic cells (DCs) are essential for successful embryo implantation. However, the properties of uterine DCs (uDCs) during the implantation period are not well characterized. In this study, we investigated the dynamic changes in the uDC phenotypes during the period between coitus and implantation. In virgin mice, we evaluated the expressions of CD103 and XCR1, this is the first report to demonstrate uDCs expressing CD103 in XCR1(+)cDC1s and XCR1(+)cDC2s. On day 0.5 post coitus (pc), the number of uterine CD11c(+)CD103(-)MHC classII(high)CD86(high)-mature DCs rapidly increased and then decreased to non-pregnancy levels on days 1.5 and 2.5 pc. On day 3.5 pc just before implantation, the number of CD11c(+)CD103(+)MHC class II(dim)CD86(dim)-immature DCs increased in the uterus. The increase in mature uDCs on day 1.5 pc was observed in both allogeneic- and syngeneic mating, suggesting that sexual intercourse, or semen, play a role in this process. Meanwhile, the increase in immature uDCs on day 3.5 pc was only observed in allogeneic mating, suggesting that allo-antigens in the semen contribute to this process. Next, to understand the turnover and migration of uDCs, we monitored DC movement in the uterus and uterine draining lymph nodes (dLNs) using photoconvertible protein Kikume Green Red (KikGR) mice. On day 0.5 pc, uDCs were composed of equal numbers of remaining DCs and migratory DCs. However, on day 3.5 pc, uDCs were primarily composed of migratory DCs, suggesting that most of the uDCs migrate from the periphery just before implantation. Finally, we studied the expression of PD-L2-which induces immunoregulation-on DCs. On day 3.5 pc, PD-L2 was expressed on CD103(+)-mature and CD103(-)-mature DCs in the uterus. However, PD-L2 expression on CD103(-)-immature DCs and CD103(+)-immature DCs was very low. Furthermore, both remaining and migratory DCs in the uterus and uterus-derived-DCs in the dLNs on day 3.5 pc highly expressed PD-L2 on their surface. Therefore, our study findings provide a better understanding of the dynamic changes occurring in uterine DCs and dLNs in preparation for implantation following allogeneic- and syngeneic mating. CI - Copyright (c) 2020 Yasuda, Shima, Moriya, Ikebuchi, Kusumoto, Ushijima, Nakashima, Tomura and Saito. FAU - Yasuda, Ippei AU - Yasuda I AD - Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan. AD - Laboratory of Immunology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, Japan. FAU - Shima, Tomoko AU - Shima T AD - Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan. FAU - Moriya, Taiki AU - Moriya T AD - Laboratory of Immunology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, Japan. FAU - Ikebuchi, Ryoyo AU - Ikebuchi R AD - Laboratory of Immunology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, Japan. AD - Research Fellow of Japan Society for the Promotion of Science, Tokyo, Japan. FAU - Kusumoto, Yutaka AU - Kusumoto Y AD - Laboratory of Immunology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, Japan. FAU - Ushijima, Akemi AU - Ushijima A AD - Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan. FAU - Nakashima, Akitoshi AU - Nakashima A AD - Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan. FAU - Tomura, Michio AU - Tomura M AD - Laboratory of Immunology, Faculty of Pharmacy, Osaka Ohtani University, Osaka, Japan. FAU - Saito, Shigeru AU - Saito S AD - Department of Obstetrics and Gynecology, University of Toyama, Toyama, Japan. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200911 PL - Switzerland TA - Front Immunol JT - Frontiers in immunology JID - 101560960 RN - 0 (Biomarkers) SB - IM MH - Animals MH - Biomarkers MH - Cell Differentiation/immunology MH - Cell Plasticity/immunology MH - Coitus/*physiology MH - Dendritic Cells/*immunology/*metabolism MH - Embryo Implantation/genetics/immunology MH - Female MH - Immunophenotyping MH - Lymph Nodes/*immunology/*metabolism MH - Mice MH - *Phenotype MH - Uterus/*physiology PMC - PMC7516021 OTO - NOTNLM OT - Kikume Green Red (KikGR) OT - PD-L2 OT - feto-maternal tolerance OT - photoconvertible protein OT - tolerogenic dendritic cells OT - uterus EDAT- 2020/10/06 06:00 MHDA- 2021/05/15 06:00 PMCR- 2020/01/01 CRDT- 2020/10/05 06:16 PHST- 2020/04/30 00:00 [received] PHST- 2020/08/20 00:00 [accepted] PHST- 2020/10/05 06:16 [entrez] PHST- 2020/10/06 06:00 [pubmed] PHST- 2021/05/15 06:00 [medline] PHST- 2020/01/01 00:00 [pmc-release] AID - 10.3389/fimmu.2020.557720 [doi] PST - epublish SO - Front Immunol. 2020 Sep 11;11:557720. doi: 10.3389/fimmu.2020.557720. eCollection 2020.