title: Cyclosporin a improves pregnancy outcome by promoting functions of trophoblasts and inducing maternal tolerance to the allogeneic fetus in abortion-prone matings in the mouse.
abstract: The embryo expresses paternal antigens foreign to the mother, and therefore has been viewed as a natural allograft. Cyclosporin A (CsA) is an immunosuppressant for preventing allograft rejection. Little is known, however, about the modulating effect of CsA on the materno-fetal relationship. In this study, pregnant CBA/J female mice mated with DBA/2 or BALB/c male mice as abortion-prone and normal pregnancy matings were administered, respectively, with CsA at Day 4 of gestation. We demonstrated that the administration of CsA at the window of implantation resulted in maternal T-cell tolerance to paternal antigen, and it improved pregnancy outcome in the CBA/J multiply sign in box DBA/2 abortion-prone matings. CsA administration enhanced Th2 and reduced Th1 cytokine production at the materno-fetal interface, and it expanded peripheral CD4(+)CD25(+) FOXP3(+) regulatory T cells in abortion-prone matings, implying development of Th2 bias and regulatory T cells. On the other hand, we observed that treatment with CsA led to enhanced growth and invasiveness of trophoblasts in the abortion-prone matings. Together, these findings indicate that CsA in lower dosages can induce materno-fetal tolerance and improve the biologic functions of trophoblast cells in the abortion-prone matings, leading to a successful pregnancy, which is useful in clinical therapeutics for spontaneous pregnancy wastage and other pregnancy complications.
authors.affiliation: Laboratory for Reproductive Immunology, Hospital and Institute of Obstetrics and Gynecology, Fudan University Shanghai Medical College, Shanghai 200011, China.
authors.forename: Mei-Rong
authors.initials: MR
authors.lastname: Du
authors.forename: Lin
authors.initials: L
authors.lastname: Dong
authors.forename: Wen-Hui
authors.initials: WH
authors.lastname: Zhou
authors.forename: Feng-Ting
authors.initials: FT
authors.lastname: Yan
authors.forename: Da-Jin
authors.initials: DJ
authors.lastname: Li
mesh_terms: D000022:Abortion, Spontaneous / Q000503:physiopathology*; D000818:Animals; D015496:CD4-Positive T-Lymphocytes / Q000502:physiology; D049109:Cell Proliferation; D016572:Cyclosporine / Q000494:pharmacology*; D016207:Cytokines / Q000096:biosynthesis; D004624:Embryo Transfer; D004797:Enzyme-Linked Immunosorbent Assay; D005260:Female; D005327:Fetal Resorption / Q000503:physiopathology; D005434:Flow Cytometry; D051858:Forkhead Transcription Factors / Q000502:physiology; D007150:Immunohistochemistry; D007166:Immunosuppressive Agents / Q000494:pharmacology*; D007376:Interleukin-2 / Q000096:biosynthesis; D053645:Interleukin-2 Receptor alpha Subunit / Q000502:physiology; D051379:Mice; D008807:Mice, Inbred BALB C; D008808:Mice, Inbred CBA; D008811:Mice, Inbred DBA; D011247:Pregnancy; D011256:Pregnancy Outcome; D013154:Spleen / Q000166:cytology / Q000378:metabolism; D050378:T-Lymphocytes, Regulatory / Q000378:metabolism; D018417:Th1 Cells / Q000378:metabolism; D018418:Th2 Cells / Q000378:metabolism; D013936:Thymidine / Q000378:metabolism; D014184:Transplantation, Homologous / Q000502:physiology*; D014327:Trophoblasts / Q000187:drug effects*
chemical_list: D016207:Cytokines; D051858:Forkhead Transcription Factors; C498833:Foxp3 protein, mouse; D007166:Immunosuppressive Agents; D007376:Interleukin-2; D053645:Interleukin-2 Receptor alpha Subunit; D016572:Cyclosporine; D013936:Thymidine