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Combs DJ, Moult EM, England SK, Cohen AE. Mapping uterine calcium dynamics during the ovulatory cycle in live mice. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.02.578395. [PMID: 38370720 PMCID: PMC10871303 DOI: 10.1101/2024.02.02.578395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Uterine contraction patterns vary during the ovulatory cycle and throughout pregnancy but prior measurements have produced limited and conflicting information on these patterns. We combined a virally delivered genetically encoded calcium reporter (GCaMP8m) and ultra-widefield imaging in live nonpregnant mice to characterize uterine calcium dynamics at organ scale throughout the estrous cycle. Prior to ovulation (proestrus and estrus) uterine excitations primarily initiated in a region near the oviduct, but after ovulation (metestrus and diestrus), excitations initiated at loci homogeneously distributed throughout the organ. The frequency of excitation events was lowest in proestrus and estrus, higher in metestrus and highest in diestrus. These results establish a platform for mapping uterine activity, and show that the question of whether there is an anatomically localized trigger for uterine excitations depends on the estrous cycle phase.
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Affiliation(s)
- David J. Combs
- Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women’s Hospital, Harvard Medical School
- Department of Chemistry and Chemical Biology, Harvard University
| | - Eric M. Moult
- Department of Chemistry and Chemical Biology, Harvard University
| | - Sarah K. England
- Department of Obstetrics and Gynecology, Center for Reproductive Health Sciences, Washington University School of Medicine
| | - Adam E. Cohen
- Department of Chemistry and Chemical Biology, Harvard University
- Department of Physics, Harvard University
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2
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Liu R, Chen L, Zhao X, Bao L, Wei R, Wu X. MUC1 promotes RIF by regulating macrophage ROS-SHP2 signaling pathway to up-regulate inflammatory response and inhibit angiogenesis. Aging (Albany NY) 2024; 16:3790-3802. [PMID: 38412233 PMCID: PMC10929826 DOI: 10.18632/aging.205560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 12/19/2023] [Indexed: 02/29/2024]
Abstract
OBJECTIVE To explore the effect of MUC1 on recurrent implantation failure (RIF) and its molecular mechanism. METHODS Bioinformation analysis was used to find possible molecular mechanisms of specific genes in the pathogenesis of RIF. The number of M1 and M2 macrophages was measured by flow cytometry. Immunohistochemical staining and western blotting were used to detect the expression of related proteins. Angiogenesis capacity was measured by cell tube-formation assay. RESULTS Bioinformatics analysis results suggest that MUC1 may play an important role in RIF. The results of flow cytometry showed that compared with NC group, M1 macrophages increased significantly and M2 macrophages decreased significantly in MUC1 OE group. The results of immunohistochemical staining showed that MUC1 could inhibit the expression of VEGF. Western blotting results showed that MUC1 could significantly increase the expression of P22, P47, gp91, p-TBK1, IFNγ and IL-1β, and decrease the expression of p-SHP2, p-PI3K, p-mTOR, HIF1α and VEGF. After the addition of ROS inhibitor and PI3K inhibitor, the effect of MUC1 on the above proteins was eliminated. The results of tube formation experiments showed that MUC1 could inhibit vascular formation. CONCLUSION As a promising biomarker for the diagnosis of RIF, MUC1 can promote RIF by regulating macrophage ROS-SHP2 signaling pathway to up-regulate inflammatory response and inhibit angiogenesis.
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Affiliation(s)
- Rongna Liu
- Department of Obstetrics and Gynecology, Hebei Medical University, Shijiazhuang 050017, China
- Department of Obstetrics and Gynecology, Bethune International Peace Hospital, Shijiazhuang 050082, Hebei, China
| | - Lin Chen
- Department of Obstetrics and Gynecology, Hebei Medical University, Shijiazhuang 050017, China
- Department of Obstetrics and Gynecology, Bethune International Peace Hospital, Shijiazhuang 050082, Hebei, China
| | - Xin Zhao
- Department of Obstetrics and Gynecology, Bethune International Peace Hospital, Shijiazhuang 050082, Hebei, China
| | - Lili Bao
- Department of Obstetrics and Gynecology, Bethune International Peace Hospital, Shijiazhuang 050082, Hebei, China
| | - Ruixia Wei
- Department of Obstetrics and Gynecology, Bethune International Peace Hospital, Shijiazhuang 050082, Hebei, China
| | - Xiaohua Wu
- Department of Obstetrics and Gynecology, Hebei Medical University, Shijiazhuang 050017, China
- Department of Reproductive Medicine Centre, Shijiazhuang Obstetrics and Gynecology Hospital, Shijiazhuang 050017, China
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3
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Ali S, Majid S, Ali MN, Taing S, Rehman MU, Arafah A. Cytokine imbalance at materno-embryonic interface as a potential immune mechanism for recurrent pregnancy loss. Int Immunopharmacol 2020; 90:107118. [PMID: 33191177 DOI: 10.1016/j.intimp.2020.107118] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/09/2020] [Accepted: 10/15/2020] [Indexed: 12/18/2022]
Abstract
Recurrent pregnancy loss (RPL) is a prominent reproductive disease that distresses about 2%-5% of couples. RPL is the loss of two or more successive spontaneous pregnancies prior to the 20th week of embryo development. The commencement of pregnancy necessitates implantation of the embryo into responsive maternal decidua synchronized with the process of placentation, decidual and myometrial trophoblast incursion as well as refashioning of spiral blood arteries of uterus. The collapse of any of the processes fundamental for pregnancy success may result into an array of pregnancy problems including spontaneous pregnancy loss. Endometrium of human female manufactures an extensive range of cytokines during the proliferative and secretory stage of the menstrual cycle. These endometrial cytokines are thought as major players for making the uterus ready for embryo implantation and placental development during pregnancy. Decidual cytokines regulate the invasion of trophoblast and remodeling of spiral arteries as well as take part in immune suppression to accomplish the pregnancy. Deterrence of maternal rejection of embryo needs a regulated milieu, which takes place essentially at the embryo-maternal interface and the tissues of the uterus. The reasons of RPL remain anonymous in a large number of cases that lead to difficulties in management and severe trauma in couples. Cytokine modulatory therapies have been shown promising for preventing RPL. Further study of novel factors is wanted to establish more effective RPL treatment protocols. The present study aims to review the outcome of cytokine breach at materno-embryonic interface and the efficacy of cytokine modulatory therapies in RPL.
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Affiliation(s)
- Shafat Ali
- Cytogenetics and Molecular Biology Laboratory, Centre of Research for Development, University of Kashmir-190006, Srinagar, J&K, India; Department of Biochemistry, Government Medical College, Srinagar, J&K, India.
| | - Sabhiya Majid
- Department of Biochemistry, Government Medical College, Srinagar, J&K, India
| | - Md Niamat Ali
- Cytogenetics and Molecular Biology Laboratory, Centre of Research for Development, University of Kashmir-190006, Srinagar, J&K, India.
| | - Shahnaz Taing
- Department of Obstetrics and Gynaecology, Govt. Medical College Associated Lalla Ded Hospital, Srinagar, J&K, India
| | - Muneeb U Rehman
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
| | - Azher Arafah
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia
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4
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De Niz M, Carvalho T, Penha-Gonçalves C, Agop-Nersesian C. Intravital imaging of host-parasite interactions in organs of the thoracic and abdominopelvic cavities. Cell Microbiol 2020; 22:e13201. [PMID: 32149435 DOI: 10.1111/cmi.13201] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 03/03/2020] [Accepted: 03/06/2020] [Indexed: 12/16/2022]
Abstract
Infections with protozoan and helminthic parasites affect multiple organs in the mammalian host. Imaging pathogens in their natural environment takes a more holistic view on biomedical aspects of parasitic infections. Here, we focus on selected organs of the thoracic and abdominopelvic cavities most commonly affected by parasites. Parasitic infections of these organs are often associated with severe medical complications or have health implications beyond the infected individual. Intravital imaging has provided a more dynamic picture of the host-parasite interplay and contributed not only to our understanding of the various disease pathologies, but has also provided fundamental insight into the biology of the parasites.
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Affiliation(s)
- Mariana De Niz
- Institute of Cell Biology, University of Bern, Bern, Switzerland.,Instituto de Medicina Molecular - João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
| | - Tânia Carvalho
- Instituto de Medicina Molecular - João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisboa, Portugal
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5
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Ticconi C, Pietropolli A, Di Simone N, Piccione E, Fazleabas A. Endometrial Immune Dysfunction in Recurrent Pregnancy Loss. Int J Mol Sci 2019; 20:E5332. [PMID: 31717776 PMCID: PMC6862690 DOI: 10.3390/ijms20215332] [Citation(s) in RCA: 110] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 10/23/2019] [Accepted: 10/24/2019] [Indexed: 12/17/2022] Open
Abstract
Recurrent pregnancy loss (RPL) represents an unresolved problem for contemporary gynecology and obstetrics. In fact, it is not only a relevant complication of pregnancy, but is also a significant reproductive disorder affecting around 5% of couples desiring a child. The current knowledge on RPL is largely incomplete, since nearly 50% of RPL cases are still classified as unexplained. Emerging evidence indicates that the endometrium is a key tissue involved in the correct immunologic dialogue between the mother and the conceptus, which is a condition essential for the proper establishment and maintenance of a successful pregnancy. The immunologic events occurring at the maternal-fetal interface within the endometrium in early pregnancy are extremely complex and involve a large array of immune cells and molecules with immunoregulatory properties. A growing body of experimental studies suggests that endometrial immune dysregulation could be responsible for several, if not many, cases of RPL of unknown origin. The present article reviews the major immunologic pathways, cells, and molecular determinants involved in the endometrial dysfunction observed with specific application to RPL.
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Affiliation(s)
- Carlo Ticconi
- Department of Surgical Sciences, Section of Gynecology and Obstetrics, University Tor Vergata, Via Montpellier, 1, 00133 Rome, Italy; (A.P.); (E.P.)
| | - Adalgisa Pietropolli
- Department of Surgical Sciences, Section of Gynecology and Obstetrics, University Tor Vergata, Via Montpellier, 1, 00133 Rome, Italy; (A.P.); (E.P.)
| | - Nicoletta Di Simone
- U.O.C. di Ostetricia e Patologia Ostetrica, Dipartimento di Scienze della Salute della Donna, del Bambino e di Sanità Pubblica, Fondazione Policlinico Universitario A.Gemelli IRCCS, Laego A. Gemelli, 8, 00168, Rome Italy;
- Istituto di Clinica Ostetrica e Ginecologica, Università Cattolica del Sacro Cuore, Largo A. Gemelli 8, 00168 Rome, Italy
| | - Emilio Piccione
- Department of Surgical Sciences, Section of Gynecology and Obstetrics, University Tor Vergata, Via Montpellier, 1, 00133 Rome, Italy; (A.P.); (E.P.)
| | - Asgerally Fazleabas
- Department of Obstetrics, Gynecology, and Reproductive Biology, College of Human Medicine, Michigan State University, Grand Rapids, MI 49503, USA;
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Schumacher A, Sharkey DJ, Robertson SA, Zenclussen AC. Immune Cells at the Fetomaternal Interface: How the Microenvironment Modulates Immune Cells To Foster Fetal Development. THE JOURNAL OF IMMUNOLOGY 2019; 201:325-334. [PMID: 29987001 DOI: 10.4049/jimmunol.1800058] [Citation(s) in RCA: 81] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 04/06/2018] [Indexed: 12/23/2022]
Abstract
Immune cells adapt their phenotypic and functional characteristics in response to the tissue microenvironment within which they traffic and reside. The fetomaternal interface, consisting of placental trophoblasts and the maternal decidua, is a highly specialized tissue with a unique and time-limited function: to nourish and support development of the semiallogeneic fetus and protect it from inflammatory or immune-mediated injury. It is therefore important to understand how immune cells within these tissues are educated and adapt to fulfill their biological functions. This review article focuses on the local regulatory mechanisms ensuring that both innate and adaptive immune cells appropriately support the early events of implantation and placental development through direct involvement in promoting immune tolerance of fetal alloantigens, suppressing inflammation, and remodeling of maternal uterine vessels to facilitate optimal placental function and fetal growth.
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Affiliation(s)
- Anne Schumacher
- Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg 39108, Germany; and
| | - David J Sharkey
- Robinson Research Institute and Adelaide Medical School, The University of Adelaide, South Australia 5005, Australia
| | - Sarah A Robertson
- Robinson Research Institute and Adelaide Medical School, The University of Adelaide, South Australia 5005, Australia
| | - Ana C Zenclussen
- Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg 39108, Germany; and
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7
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Koike Y, Li B, Chen Y, Miyake H, Lee C, Chi L, Wu R, Inoue M, Uchida K, Kusunoki M, Delgado-Olguin P, Pierro A. Live Imaging of Fetal Intra-abdominal Organs Using Two-Photon Laser-Scanning Microscopy. Methods Mol Biol 2018; 1752:63-69. [PMID: 29564762 DOI: 10.1007/978-1-4939-7714-7_6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The processes by which the intra-abdominal organ circulatory system develops in the embryo and during organogenesis are unclear. Previous studies have used fixed tissues to study the development of abdominal organ vasculature in the embryo; however, the intravital circulation of intra-abdominal organs in rodent fetal development has not been studied. This protocol describes a system that uses two-photon laser-scanning microscopy (TPLSM) for real-time observation and quantification of normal and pathologic live fetal intra-abdominal dynamics while the fetus is still connected to the mother via the umbilical cord.
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Affiliation(s)
- Yuhki Koike
- Translational Medicine Program, Division of General and Thoracic Surgery, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Bo Li
- Translational Medicine Program, Division of General and Thoracic Surgery, The Hospital for Sick Children, Toronto, ON, Canada
| | - Yong Chen
- Translational Medicine Program, Division of General and Thoracic Surgery, The Hospital for Sick Children, Toronto, ON, Canada
| | - Hiromu Miyake
- Translational Medicine Program, Division of General and Thoracic Surgery, The Hospital for Sick Children, Toronto, ON, Canada
| | - Carol Lee
- Translational Medicine Program, Division of General and Thoracic Surgery, The Hospital for Sick Children, Toronto, ON, Canada
| | - Lijun Chi
- Translational Medicine, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Richard Wu
- Department of Gastroenterology, Hepatology and Nutrition, The Hospital for Sick Children, Toronto, ON, Canada
| | - Mikihiro Inoue
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Keiichi Uchida
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Masato Kusunoki
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Paul Delgado-Olguin
- Translational Medicine, The Hospital for Sick Children, 686 Bay Street, Toronto, Ontario, M5G0A4, Canada
- Department of Molecular Genetics, University of Toronto, 1 King's College Cir, Toronto, ON, M5S 1A8, Canada
- Heart & Stroke Richard Lewar Centres of Excellence in Cardiovascular Research, 6 Queen's Park Cres W, Toronto, ON, M5S3H2, Canada
| | - Agostino Pierro
- Translational Medicine Program, Division of General and Thoracic Surgery, The Hospital for Sick Children, Toronto, ON, Canada.
- The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada.
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8
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Liao CX, Wang ZY, Zhou Y, Zhou LQ, Zhu XQ, Liu WG, Chen JX. Label-free identification of the microstructure of rat spinal cords based on nonlinear optical microscopy. J Microsc 2017; 267:143-149. [PMID: 28319259 DOI: 10.1111/jmi.12554] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 01/26/2017] [Accepted: 02/14/2017] [Indexed: 11/28/2022]
Abstract
The spinal cord is a vital link between the brain and the body and mainly comprises neurons, glial cells and nerve fibres. In this work, nonlinear optical (NLO) microscopy based on intrinsic tissue properties was employed to label-freely analyze the cells and matrix in spinal cords at a molecular level. The high-resolution and high-contrast NLO images of unstained spinal cords demonstrate that NLO microscopy has the ability to show the microstructure of white and grey matter including ventral horn, intermediate area, dorsal horns, ventral column, lateral column and dorsal column. Neurons with various sizes were identified in grey matter by dark spots of nonfluorescent nuclei encircled by cytoplasm-emitting two-photon excited fluorescence signals. Nerve fibres and neuroglias were observed in white matter. Besides, the spinal arteries were clearly presented by NLO microscopy. Using spectral and morphological information, this technique was proved to be an effective tool for label-freely imaging spinal cord tissues, based on endogenous signals in biological tissue. With future development, we foresee promising applications of the NLO technique for in vivo, real-time assessment of spinal cord diseases or injures.
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Affiliation(s)
- C X Liao
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, 350007, P. R. China
| | - Z Y Wang
- Department of Orthopedics, Affiliated Union Hospital of Fujian Medical University, Fuzhou, P. R. China
| | - Y Zhou
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, 350007, P. R. China
| | - L Q Zhou
- Department of Orthopedics, Affiliated Union Hospital of Fujian Medical University, Fuzhou, P. R. China
| | - X Q Zhu
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, 350007, P. R. China
| | - W G Liu
- Department of Orthopedics, Affiliated Union Hospital of Fujian Medical University, Fuzhou, P. R. China
| | - J X Chen
- Key Laboratory of OptoElectronic Science and Technology for Medicine of Ministry of Education, Fujian Provincial Key Laboratory of Photonics Technology, Fujian Normal University, Fuzhou, 350007, P. R. China
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9
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Riquelme SA, Carreño LJ, Espinoza JA, Mackern-Oberti JP, Alvarez-Lobos MM, Riedel CA, Bueno SM, Kalergis AM. Modulation of antigen processing by haem-oxygenase 1. Implications on inflammation and tolerance. Immunology 2016; 149:1-12. [PMID: 26938875 PMCID: PMC4981612 DOI: 10.1111/imm.12605] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 02/25/2016] [Accepted: 02/29/2016] [Indexed: 12/23/2022] Open
Abstract
Haem-oxygenase-1 (HO-1) is an enzyme responsible for the degradation of haem that can suppress inflammation, through the production of carbon monoxide (CO). It has been shown in several experimental models that genetic and pharmacological induction of HO-1, as well as non-toxic administration of CO, can reduce inflammatory diseases, such as endotoxic shock, type 1 diabetes and graft rejection. Recently, it was shown that the HO-1/CO system can alter the function of antigen-presenting cells (APCs) and reduce T-cell priming, which can be beneficial during immune-driven inflammatory diseases. The molecular mechanisms by which the HO-1 and CO reduce both APC- and T-cell-driven immunity are just beginning to be elucidated. In this article we discuss recent findings related to the immune regulatory capacity of HO-1 and CO at the level of recognition of pathogen-associated molecular patterns and T-cell priming by APCs. Finally, we propose a possible regulatory role for HO-1 and CO over the recently described mitochondria-dependent immunity. These concepts could contribute to the design of new therapeutic tools for inflammation-based diseases.
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Affiliation(s)
- Sebastián A Riquelme
- Millennium Institute of Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- INSERM, UMR 1064, CHU Nantes, ITUN, Nantes, France
| | - Leandro J Carreño
- Millennium Institute of Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Janyra A Espinoza
- Millennium Institute of Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Juan Pablo Mackern-Oberti
- Institute of Medicine and Experimental Biology of Cuyo (IMBECU), Science and Technology Center (CCT) of Mendoza, National Council of Scientific and Technical Research (CONICET), Mendoza, Argentina
- Institute of Physiology, School of Medicine, National University of Cuyo, Mendoza, Argentina
| | - Manuel M Alvarez-Lobos
- Departamento de Gastroenterología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Claudia A Riedel
- Millennium Institute on Immunology and Immunotherapy, Departamento de Ciencias Biológicas, Facultad de Ciencias Biológicas y Facultad de Medicina, Universidad Andrés Bello, Santiago, Chile
| | - Susan M Bueno
- Millennium Institute of Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- INSERM, UMR 1064, CHU Nantes, ITUN, Nantes, France
| | - Alexis M Kalergis
- Millennium Institute of Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- INSERM, UMR 1064, CHU Nantes, ITUN, Nantes, France
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
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10
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Schießl IM, Castrop H. Deep insights: intravital imaging with two-photon microscopy. Pflugers Arch 2016; 468:1505-16. [PMID: 27352273 DOI: 10.1007/s00424-016-1832-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 04/26/2016] [Indexed: 01/03/2023]
Abstract
Intravital multiphoton microscopy is widely used to assess the structure and function of organs in live animals. Although different tissues vary in their accessibility for intravital multiphoton imaging, considerable progress has been made in the imaging quality of all tissues due to substantial technical improvements in the relevant imaging components, such as optics, excitation laser, detectors, and signal analysis software. In this review, we provide an overview of the technical background of intravital multiphoton microscopy. Then, we note a few seminal findings that were made through the use of multiphoton microscopy. Finally, we address the technical limitations of the method and provide an outlook for how these limitations may be overcome through future technical developments.
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Affiliation(s)
- Ina Maria Schießl
- Institute of Physiology, University of Regensburg, Universitätsstr. 31, 93040, Regensburg, Germany.
| | - Hayo Castrop
- Institute of Physiology, University of Regensburg, Universitätsstr. 31, 93040, Regensburg, Germany
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11
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Dauven D, Ehrentraut S, Langwisch S, Zenclussen AC, Schumacher A. Immune Modulatory Effects of Human Chorionic Gonadotropin on Dendritic Cells Supporting Fetal Survival in Murine Pregnancy. Front Endocrinol (Lausanne) 2016; 7:146. [PMID: 27895621 PMCID: PMC5108759 DOI: 10.3389/fendo.2016.00146] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Accepted: 11/01/2016] [Indexed: 01/07/2023] Open
Abstract
Dendritic cells (DCs) are critically involved in the determination of immunity vs. tolerance. Hence, DCs are key regulators of immune responses either favoring or disfavoring fetal survival. Several factors were proposed to modulate DC phenotype and function during pregnancy. Here, we studied whether the pregnancy hormone human chorionic gonadotropin (hCG) is involved in DC regulation. In vitro, bone marrow-derived DCs (BMDCs) were stimulated in the presence or absence of urine-purified or recombinant hCG (rhCG) preparations. Subsequently, BMDC maturation was assessed. Cytokine secretion of activated BMDCs and their capability to enforce TH1, TH2, TH17, or Treg cell differentiation was determined after rhCG treatment. Moreover, the in vivo potential of hCG-modulated BMDCs to influence pregnancy outcome, Treg cell number, and local cytokine expression was evaluated after adoptive transfer in a murine abortion-prone model before and after conception. Both hCG preparations impaired the maturation process of BMDCs. rhCG treatment did neither alter cytokine secretion by BMDCs nor their ability to drive TH1, TH2, or TH17 differentiation. rhCG-treated BMDCs augmented the number of Treg cells within the T cell population. Adoptive transfer of rhCG-treated BMDCs after conception did not influence pregnancy outcome. However, transfer of hCG-treated BMDCs prior to mating had a protective effect on pregnancy. This positive effect was accompanied by increased Treg cell numbers and decidual IL-10 and TGF-β expression. Our results unveil the importance of hCG in retaining DCs in a tolerogenic state, thereby promoting Treg cell increment and supporting fetal survival.
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Affiliation(s)
- Dominique Dauven
- Department of Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
| | - Stefanie Ehrentraut
- Department of Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
| | - Stefanie Langwisch
- Department of Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
| | - Ana Claudia Zenclussen
- Department of Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
| | - Anne Schumacher
- Department of Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
- *Correspondence: Anne Schumacher,
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12
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Dumat B, Faurel-Paul E, Fornarelli P, Saettel N, Metgé G, Fiorini-Debuisschert C, Charra F, Mahuteau-Betzer F, Teulade-Fichou MP. Influence of the oxazole ring connection on the fluorescence of oxazoyl-triphenylamine biphotonic DNA probes. Org Biomol Chem 2015; 14:358-70. [PMID: 26599863 DOI: 10.1039/c5ob02225h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
On the basis of our previous work on DNA fluorophores derived from vinylpyridinium-triphenylamine, we explored the structure space around the electron-rich triphenylamine (TP) core by changing the vinyl bond to an oxazole ring. As 2,5-diaryloxazoles are known to be highly fluorescent and efficient two photon absorbers, we synthesized analogues with two different connections of the oxazole to the triphenylamine core: TP-Ox2Py and TP-Ox5Py sets. Since the benzimidazolium group was proven to be more effective in the TP series than the pyridinium, we also synthesized a TP-Ox5Bzim set. The TP-Ox5Py series retains the TP-Py properties: on/off behavior on DNA, good two-photon cross-section and bright staining of nuclear DNA by microscopy under both one or two-photon excitation. On the other hand, the TP-Ox2Py series does not display fluorescence upon binding to DNA. The TP-Ox5Bzim set is fluorescent even in the absence of DNA and displays lower affinity than the corresponding TP-Ox5Py. CD experiments and docking were performed to understand these different behaviors.
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Affiliation(s)
- Blaise Dumat
- Institut Curie, PSL Research University, CNRS, INSERM, UMR9187/U1196, F-91405, Orsay, France.
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13
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Woidacki K, Meyer N, Schumacher A, Goldschmidt A, Maurer M, Zenclussen AC. Transfer of regulatory T cells into abortion-prone mice promotes the expansion of uterine mast cells and normalizes early pregnancy angiogenesis. Sci Rep 2015; 5:13938. [PMID: 26355667 PMCID: PMC4565045 DOI: 10.1038/srep13938] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 08/03/2015] [Indexed: 12/21/2022] Open
Abstract
Implantation of the fertilized egg depends on the coordinated interplay of cells and
molecules that prepare the uterus for this important event. In particular,
regulatory T cells (Tregs) are key regulators as their ablation hinders implantation
by rendering the uterus hostile for the embryo. In addition, the adoptive transfer
of Tregs can avoid early abortion in mouse models. However, it is still not defined
which mechanisms underlie Treg function during this early period. Cells of the
innate immune system have been reported to support implantation, in part by
promoting angiogenesis. In particular, uterine mast cells (uMCs) emerge as novel
players at the fetal-maternal interface. Here, we studied whether the positive
action of Tregs is based on the expansion of uMCs and the promotion of angiogenesis.
We observed that abortion-prone mice have insufficient numbers of uMCs that could be
corrected by the adoptive transfer of Tregs. This in turn positively influenced the
remodeling of spiral arteries and placenta development as well as the levels of
soluble fms-like tyrosine kinase 1 (sFlt-1). Our data suggest an interplay between
Tregs and uMCs that is relevant for the changes required at the feto-maternal
interface for the normal development of pregnancy.
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Affiliation(s)
- Katja Woidacki
- Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
| | - Nicole Meyer
- Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
| | - Anne Schumacher
- Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
| | - Alexandra Goldschmidt
- Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
| | - Marcus Maurer
- Department of Dermatology and Allergy, Charité - Universitätsmedizin Berlin, Germany
| | - Ana Claudia Zenclussen
- Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany
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14
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Gómez-Conde I, Caetano SS, Tadokoro CE, Olivieri DN. Stabilizing 3D in vivo intravital microscopy images with an iteratively refined soft-tissue model for immunology experiments. Comput Biol Med 2015; 64:246-60. [PMID: 26232672 DOI: 10.1016/j.compbiomed.2015.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 07/01/2015] [Accepted: 07/02/2015] [Indexed: 11/29/2022]
Abstract
We describe a set of new algorithms and a software tool, StabiTissue, for stabilizing in vivo intravital microscopy images that suffer from soft-tissue background movement. Because these images lack predetermined anchors and are dominated by noise, we use a pixel weighted image alignment together with a correction for nonlinear tissue deformations. We call this correction a poor man׳s diffeomorphic map since it ascertains the nonlinear regions of the image without resorting to a full integral equation method. To determine the quality of the image stabilization, we developed an ensemble sampling method that quantifies the coincidence between image pairs from randomly distributed image regions. We obtain global stabilization alignment through an iterative constrained simulated annealing optimization procedure. To show the accuracy of our algorithm with existing software, we measured the misalignment error rate in datasets taken from two different organs and compared the results to a similar and popular open-source solution. Present open-source stabilization software tools perform poorly because they do not treat the specific needs of the IV-2pM datasets with soft-tissue deformation, speckle noise, full 5D inter- and intra-stack motion error correction, and undefined anchors. In contrast, the results of our tests demonstrate that our method is more immune to noise and provides better performance for datasets' possessing nonlinear tissue deformations. As a practical application of our software, we show how our stabilization improves cell tracking, where the presence of background movement would degrade track information. We also provide a qualitative comparison of our software with other open-source libraries/applications. Our software is freely available at the open source repository http://sourceforge.net/projects/stabitissue/.
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Affiliation(s)
- Iván Gómez-Conde
- Department of Computer Science, University of Vigo, Ourense 32004, Spain.
| | - Susana S Caetano
- Immune Regulation Group, Gulbenkian Institute of Science, Oeiras, Portugal
| | - Carlos E Tadokoro
- Immune Regulation Group, Gulbenkian Institute of Science, Oeiras, Portugal; Laboratory of Immunobiology, Universidade Vila Velha, Vila Velha, Brazil
| | - David N Olivieri
- Department of Computer Science, University of Vigo, Ourense 32004, Spain.
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15
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Zenclussen AC, Hämmerling GJ. Cellular Regulation of the Uterine Microenvironment That Enables Embryo Implantation. Front Immunol 2015; 6:321. [PMID: 26136750 PMCID: PMC4470084 DOI: 10.3389/fimmu.2015.00321] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 06/03/2015] [Indexed: 11/13/2022] Open
Abstract
Implantation of the fertilized egg into the maternal uterus is a crucial step in pregnancy establishment. Increasing evidence suggests that its success depends on various cell types of the innate immune system and on the fine balance between inflammatory and anti-inflammatory processes. In addition, it has recently been established that regulatory T cells play a superordinate role in dictating the quality of uterine environment required for successful pregnancy. Here, we discuss the cellular regulation of uterine receptivity with emphasis on the function and regulation of cells from the innate and adaptive immune system.
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Affiliation(s)
- Ana Claudia Zenclussen
- Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University , Magdeburg , Germany
| | - Günter J Hämmerling
- Molecular Immunology, German Cancer Research Center (DKFZ) , Heidelberg , Germany
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16
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Schumacher A, Zenclussen AC. Effects of heme oxygenase-1 on innate and adaptive immune responses promoting pregnancy success and allograft tolerance. Front Pharmacol 2015; 5:288. [PMID: 25610397 PMCID: PMC4285018 DOI: 10.3389/fphar.2014.00288] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 12/10/2014] [Indexed: 12/14/2022] Open
Abstract
The heme-degrading enzyme heme oxygenase-1 (HO-1) has cytoprotective, antioxidant, and anti-inflammatory properties. Moreover, HO-1 is reportedly involved in suppressing destructive immune responses associated with inflammation, autoimmune diseases, and allograft rejection. During pregnancy, maternal tolerance to foreign fetal antigens is a prerequisite for successful embryo implantation and fetal development. Here, HO-1 has been implicated in counteracting the overwhelming inflammatory immune responses towards fetal allo-antigens, thereby contributing to fetal acceptance. Accordingly, HO-1 ablation negatively impacts the critical steps of pregnancy such as fertilization, implantation, placentation, and fetal growth. In the present review, we summarize recent data on the immune modulatory capacity of HO-1 towards allo-antigens expressed by the semi-allogeneic fetus and organ allografts. In this regard, HO-1 has been shown to promote alloantigen tolerance by blocking dendritic cell maturation resulting in reduced T cell responses and increased numbers of regulatory T cells. Moreover, HO-1 is suggested to shift the uterine cytokine milieu towards a protective Th2 profile and protects fetal tissue from apoptosis by upregulating anti-apoptotic molecules. Thus, HO-1 is not only a pivotal regulator of the initial steps of pregnancy; but also, an important player in supporting the maternal immune system in tolerating the fetus.
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Affiliation(s)
- Anne Schumacher
- Department of Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University Magdeburg, Germany
| | - Ana C Zenclussen
- Department of Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University Magdeburg, Germany
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17
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Schumacher A, Zenclussen AC. The Paternal Contribution to Fetal Tolerance. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2015; 868:211-25. [PMID: 26178852 DOI: 10.1007/978-3-319-18881-2_10] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Recognition of foreign paternal antigens expressed in the semi-allogeneic fetus by maternal immune cells is a requirement for successful pregnancy. However, despite intensive research activity during the last decades, the precise mechanisms contributing to the acceptance of the paternal alloantigens are still puzzling and pregnancy remains a fascinating phenomenon. Moreover, most studies focused on the maternal and fetal contribution to pregnancy success, and relatively little is known about the paternal involvement. In the current review, we address the contribution of paternal-derived factors to fetal-tolerance induction. First, we discuss data suggesting that in both humans and mice, the female body gets prepared for a pregnancy in every cycle, also in regard to male alloantigens delivered at coitus. Then, we provide an overview about factors present in seminal fluid and how these factors influence immune responses in the female reproductive tract. We further discuss ways of paternal alloantigen presentation and identify the immune modulatory properties of seminal fluid-derived factors with a special focus on Treg biology. Finally, we highlight the therapeutic potential of seminal fluid in different clinical applications.
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Affiliation(s)
- Anne Schumacher
- Department of Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University, Gerhart-Hauptmann Straße 35, 39108, Magdeburg, Germany
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18
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Schmerse F, Woidacki K, Riek-Burchardt M, Reichardt P, Roers A, Tadokoro C, Zenclussen AC. In vivo visualization of uterine mast cells by two-photon microscopy. Reproduction 2014; 147:781-8. [DOI: 10.1530/rep-13-0570] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Transgenic mice expressing fluorescent proteins in specific cell populations are widely used for the study ofin vivobehavior of these cells. We have recently reported that uterine mast cells (uMCs) are important for implantation and placentation. However, theirin vivolocalization in uterus before and during pregnancy is unknown. Herein, we report the direct observation of uMCsin vivousing double-transgenic C57BL/6JMcpt5-Cre ROSA26-EYFPmice with high expression of enhanced yellow fluorescent protein in MC protease 5 (Cma1(Mcpt5))-expressing cells by intravital two-photon microscopy. We were able to monitor MCs livein uteroduring the murine estrous cycle and at different days of pregnancy. We demonstrated that uMCs accumulated during the receptive phase of the female (estrus) and persisted in large numbers at early pregnancy stages and around mid-gestation and declined in number in non-pregnant animals at diestrus. This intravital microscopy technique, including a custom-made microscope stage and the adaption of the surgical procedure, allowed the access of the uterus and implantations for imaging. The introduced application of intravital microscopy to C57BL/6J-Mcpt5-Cre ROSA26-EYFPmice offers a novel and powerfulin vivoapproach to further address the evident relevance of uMCs to reproductive processes with obvious clinical implications.
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Teles A, Schumacher A, Kühnle MC, Linzke N, Thuere C, Reichardt P, Tadokoro CE, Hämmerling GJ, Zenclussen AC. Control of uterine microenvironment by foxp3(+) cells facilitates embryo implantation. Front Immunol 2013; 4:158. [PMID: 23801995 PMCID: PMC3689029 DOI: 10.3389/fimmu.2013.00158] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 06/08/2013] [Indexed: 12/31/2022] Open
Abstract
Implantation of the fertilized egg into the maternal uterus depends on the fine balance between inflammatory and anti-inflammatory processes. Whilst regulatory T cells (Tregs) are reportedly involved in protection of allogeneic fetuses against rejection by the maternal immune system, their role for pregnancy to establish, e.g., blastocyst implantation, is not clear. By using 2-photon imaging we show that Foxp3(+) cells accumulated in the mouse uterus during the receptive phase of the estrus cycle. Seminal fluid further fostered Treg expansion. Depletion of Tregs in two Foxp3.DTR-based models prior to pairing drastically impaired implantation and resulted in infiltration of activated T effector cells as well as in uterine inflammation and fibrosis in both allogeneic and syngeneic mating combinations. Genetic deletion of the homing receptor CCR7 interfered with accumulation of Tregs in the uterus and implantation indicating that homing of Tregs to the uterus was mediated by CCR7. Our results demonstrate that Tregs play a critical role in embryo implantation by preventing the development of a hostile uterine microenvironment.
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Affiliation(s)
- Ana Teles
- Experimental Obstetrics and Gynecology, Medical Faculty, Otto-von-Guericke University Magdeburg , Magdeburg , Germany ; PDBEB, Center for Neuroscience and Cell Biology, University of Coimbra , Coimbra , Portugal
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