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Brosnahan MM, Silvela EJ, Crumb J, Miller DC, Erb HN, Antczak DF. Ectopic Trophoblast Allografts in the Horse Resist Destruction by Secondary Immune Responses. Biol Reprod 2016; 95:135. [PMID: 27760752 PMCID: PMC5315430 DOI: 10.1095/biolreprod.115.137851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 01/11/2016] [Accepted: 10/11/2016] [Indexed: 01/15/2023] Open
Abstract
Invasive trophoblast from Day 34 horse conceptuses survives in extrauterine sites in allogeneic recipients that are immunologically naive to donor major histocompatibility complex class I antigens. The ectopic trophoblast retains its in utero characteristics, including similar lifespan, physiologic effect of its secreted product (equine chorionic gonadotropin) upon the recipient's ovaries, and induction of host immune responses. Immunologic memory has not been considered previously in this experimental system. We hypothesized that primary exposure to ectopic trophoblast would affect the recipient's immune status such that the survival time of subsequent transplants would be altered. Secondary transplant lifespans could be shortened by destructive memory responses, as has been observed in ectopic trophoblast studies in rodents, or lengthened, as occurs when male skin grafts follow multiple syngeneic pregnancies in mice. Eight mares received two closely spaced trophoblast transplants. Both grafts for each recipient were obtained from conceptuses sired by the same stallion to provide consistency in histocompatibility antigen exposure. Donor stallions were major histocompatibility complex class I homozygotes. Cytotoxic antibody production was tracked to monitor recipients' immune responses to the transplants. Detection of serum equine chorionic gonadotropin was used as a proxy for transplant lifespan. There was no significant difference between the distributions of primary and secondary transplant lifespans, despite evidence of immunologic memory. These data demonstrate that secondary ectopic trophoblast transplants in horses do not experience earlier destruction or prolonged survival following immune priming of recipients. Mechanisms responsible for the eventual demise of the transplants remain unperturbed by secondary immune responses or chronic antigenic exposure.
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Affiliation(s)
- Margaret M Brosnahan
- Baker Institute for Animal Health, Cornell University College of Veterinary Medicine, Ithaca, New York
| | - Emily J Silvela
- Baker Institute for Animal Health, Cornell University College of Veterinary Medicine, Ithaca, New York
| | - Jessica Crumb
- Baker Institute for Animal Health, Cornell University College of Veterinary Medicine, Ithaca, New York
| | - Donald C Miller
- Baker Institute for Animal Health, Cornell University College of Veterinary Medicine, Ithaca, New York
| | - Hollis N Erb
- Department of Population Medicine and Diagnostic Sciences, Cornell University College of Veterinary Medicine, Ithaca, New York
| | - Douglas F Antczak
- Baker Institute for Animal Health, Cornell University College of Veterinary Medicine, Ithaca, New York
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Binas B, Verfaillie CM. Concise review: Bone marrow meets blastocyst: lessons from an unlikely encounter. Stem Cells 2013; 31:620-6. [PMID: 23169605 DOI: 10.1002/stem.1287] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Accepted: 10/28/2012] [Indexed: 12/17/2022]
Abstract
This article discusses the implications of the recent discovery that rat bone marrow-derived multipotent adult progenitor cells (rMAPCs), a cell type with broad somatic differentiation potential but of uncertain lineage identity, are similar to rat blastocyst-derived extraembryonic endoderm precursor (rXENP) cells, which appear to represent the committed extraembryonic endoderm precursor of the blastocyst. It was found that under rMAPC culture conditions, rXENP cells can be homogeneously cultured and similar cells, named rat hypoblast stem cells (rHypoSCs), can be derived from rat blastocysts more rapidly and directly. The detailed comparison of rHypoSCs, rXENP cells, and rMAPCs revealed highly similar gene expression profiles and developmental potentials. The significance of these findings for embryology, stem cell biology, and medicine is discussed. Specifically, the results assign a lineage identity to rMAPCs, indicate that rMAPCs originated by environmental reprogramming, and imply that HypoSCs, XENP cells, and MAPCs possess lineage plasticity. The MAPC-HypoSC relation also strengthens the consistency of rat and mouse embryology and consequently the idea that HypoSCs represent the committed extraembryonic endoderm precursor of the blastocyst. On this basis, it is argued that the direct comparison of HypoSCs (now available in pure form) with embryonic stem cells will be highly useful for the understanding of pluripotency and plasticity. Finally, the new findings suggest an explanation for an obscure observation on stem cell-induced transplantation tolerance. Thus, the HypoSC/XENP/MAPC phenotype provides a unique but broadly instructive model with which to study stem cell plasticity, reprogramming, and transplantation tolerance, all central themes in regenerative medicine.
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Affiliation(s)
- Bert Binas
- Division of Molecular and Life Science, Hanyang University, Kyeonggi-do, South Korea.
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Kyurkchiev S, Gandolfi F, Hayrabedyan S, Brevini TAL, Dimitrov R, Fitzgerald JS, Jabeen A, Mourdjeva M, Photini SM, Spencer P, Fernández N, Markert UR. Stem Cells in the Reproductive System. Am J Reprod Immunol 2012; 67:445-62. [DOI: 10.1111/j.1600-0897.2012.01140.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Accepted: 03/16/2012] [Indexed: 01/01/2023] Open
Affiliation(s)
- Stanimir Kyurkchiev
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences; Sofia; Bulgaria
| | - Fulvio Gandolfi
- Laboratory of Biomedical Embryology, UNISTEM; Università degli Studi di Milano; Milan; Italy
| | - Soren Hayrabedyan
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences; Sofia; Bulgaria
| | - Tiziana A. L. Brevini
- Laboratory of Biomedical Embryology, UNISTEM; Università degli Studi di Milano; Milan; Italy
| | - Roumen Dimitrov
- Institute of Biology and Immunology of Reproduction, Bulgarian Academy of Sciences; Sofia; Bulgaria
| | | | - Asma Jabeen
- School of Biological Sciences; University of Essex; Colchester; Essex; UK
| | | | - Stella M. Photini
- Placenta , Department of Obstetrics; University Hospital Jena; Jena; Germany
| | - Patrick Spencer
- School of Biological Sciences; University of Essex; Colchester; Essex; UK
| | - Nelson Fernández
- School of Biological Sciences; University of Essex; Colchester; Essex; UK
| | - Udo R. Markert
- Placenta , Department of Obstetrics; University Hospital Jena; Jena; Germany
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Liu KJ, Wang CJ, Chang CJ, Hu HI, Hsu PJ, Wu YC, Bai CH, Sytwu HK, Yen BL. Surface Expression of HLA-G is Involved in Mediating Immunomodulatory Effects of Placenta-Derived Multipotent Cells (PDMCs) towards Natural Killer Lymphocytes. Cell Transplant 2011; 20:1721-30. [DOI: 10.3727/096368911x580590] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Interactions between maternal natural killer lymphocytes (NKs) and fetal tissues are important in mediating maternal–fetal tolerance. We therefore investigated the interactions of NKs to placenta-derived multipotent cells (PDMCs) isolated from the term human placenta. PDMCs have similar cell surface marker expression as bone marrow mesenchymal stem cells (BMMSCs) and additionally express human embryonic stem cell markers SSEA-4 and CD-9. Differentiation into the tri-mesodermal lineages of osteoblastic, adipocytic, and chondrogenic phenotypes can be readily achieved under the appropriate conditions. We found that PDMCs are more resistant to NK-mediated lysis than the major histocompatibility complex (MHC) class-I null target cell K562, and can suppress NK secretion of interferon-γ (IFN-γ). Moreover, as third-party cells, PDMCs suppressed the cytotoxic effects of cytokine-stimulated NKs on K562. Pretreatment of PDMCs with IFN-γ, a proinflammatory cytokine, surprisingly enhanced such immunosuppressive effects. Cell–cell contact between NKs and PDMCs is required for suppressive effects, which are partially mediated by slight upregulation of the NK inhibitory receptor killer inhibitory receptor and downregulation of the activating receptor NKp30. Moreover, enhancement of PDMC suppressive effects is also mediated by IFN-γ-induced surface expression of HLA-G—an immunomodulatory nonclassical MHC class I molecule—on PDMCs, as seen by partial reversibility with HLA-G neutralizing antibodies. With its broad immunosuppressive properties, PDMCs may represent a potential cell source for therapeutic use.
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Affiliation(s)
- Ko-Jiunn Liu
- National Institute of Cancer Research, National Health Research Institutes (NHRI), Tainan, Taiwan
- Institute of Biopharmaceutical Sciences, National Cheng Kung University, Tainan, Taiwan
- School of Medical Laboratory Science and Biotechnology, Taipei Medical University (TMU), Taipei, Taiwan
| | - Chia-Jen Wang
- Department of Microbiology and Immunology, National Defense Medical Center (NDMC), Taipei, Taiwan
| | - Chan-Jung Chang
- Regenerative Medicine Research Group, Institute of Cellular and System Medicine, National Health Research Institutes (NHRI), Zhunan, Taiwan
| | - Hsin-I Hu
- Regenerative Medicine Research Group, Institute of Cellular and System Medicine, National Health Research Institutes (NHRI), Zhunan, Taiwan
| | - Pei-Ju Hsu
- Regenerative Medicine Research Group, Institute of Cellular and System Medicine, National Health Research Institutes (NHRI), Zhunan, Taiwan
| | - Yu-Chen Wu
- National Institute of Cancer Research, National Health Research Institutes (NHRI), Tainan, Taiwan
| | - Chyi-Huey Bai
- Central Laboratory, Shin-Kong Wu Ho-Su Memorial Hospital and School of Public Health, Taipei Medical University (TMU), Taipei, Taiwan
| | - Huey-Kang Sytwu
- Department of Microbiology and Immunology, National Defense Medical Center (NDMC), Taipei, Taiwan
- Graduate Institute of Life Sciences, National Defense Medical Center (NDMC), Taipei, Taiwan
- Department of Medical Research, Tri-Service General Hospital, National Defense Medical Center (NDMC), Taipei, Taiwan
| | - B. Linju Yen
- Regenerative Medicine Research Group, Institute of Cellular and System Medicine, National Health Research Institutes (NHRI), Zhunan, Taiwan
- Graduate Institute of Aging, College of Medicine, China Medical University, Taichung, Taiwan
- Department of Obstetrics/Gynecology, Cathay General Hospital Shiji, Taipei, Taiwan
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de Mestre AM, Hanlon D, Adams AP, Runcan E, Leadbeater JC, Erb HN, Costa CC, Miller D, Allen WR, Antczak DF. Functions of ectopically transplanted invasive horse trophoblast. Reproduction 2011; 141:849-56. [PMID: 21389079 DOI: 10.1530/rep-10-0462] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The invasive and fully antigenic trophoblast of the chorionic girdle portion of the equine fetal membranes has the capacity to survive and differentiate after transplantation to ectopic sites. The objectives of this study were to determine i) the survival time of ectopically transplanted allogeneic trophoblast cells in non-pregnant recipient mares, ii) whether equine chorionic gonadotropin (eCG) can be delivered systemically by transplanted chorionic girdle cells, and iii) whether eCG delivered by the transplanted cells is biologically active and can suppress behavioral signs associated with estrus. Ectopically transplanted chorionic girdle survived for up to 105 days with a mean lifespan of 75 days (95% confidence interval 55-94) and secreted sufficient eCG for the hormone to be measurable in the recipients' circulation. Immunohistochemical labeling of serial biopsies of the transplant sites and measurement of eCG profiles demonstrated that graft survival was similar to the lifespan of equine endometrial cups in normal horse pregnancy. The eCG secreted by the transplanted cells induced corpora lutea formation and sustained systemic progesterone levels in the recipient mares, effects that are also observed during pregnancy. This in turn caused suppression of estrus behavior in the recipients for up to 3 months. Thus, ectopically transplanted equine trophoblast provides an unusual example of sustained viability and function of an immunogenic transplant in a recipient with an intact immune system. This model highlights the importance of innate immunoregulatory capabilities of invasive trophoblast cells and describes a new method to deliver sustained circulating concentrations of eCG in non-pregnant mares.
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Affiliation(s)
- Amanda M de Mestre
- College of Veterinary Medicine, Baker Institute for Animal Health, Cornell University, Ithaca, New York 14853, USA
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Eve DJ, Fillmore RW, Borlongan CV, Sanberg PR. Stem cell research in cell transplantation: sources, geopolitical influence, and transplantation. Cell Transplant 2010; 19:1493-509. [PMID: 21054954 DOI: 10.3727/096368910x540612] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
If the rapidly progressing field of stem cell research reaches its full potential, successful treatments and enhanced understanding of many diseases are the likely results. However, the full potential of stem cell science will only be reached if all possible avenues can be explored and on a worldwide scale. Until 2009, the US had a highly restrictive policy on obtaining cells from human embryos and fetal tissue, a policy that pushed research toward the use of adult-derived cells. Currently, US policy is still in flux, and retrospective analysis does show the US lagging behind the rest of the world in the proportional increase in embryonic/fetal stem cell research. The majority of US studies being on either a limited number of cell lines, or on cells derived elsewhere (or funded by other sources than Federal) rather than on freshly isolated embryonic or fetal material. Neural, mesenchymal, and the mixed stem cell mononuclear fraction are the most commonly investigated types, which can generally be classified as adult-derived stem cells, although roughly half of the neural stem cells are fetal derived. Other types, such as embryonic and fat-derived stem cells, are increasing in their prominence, suggesting that new types of stem cells are still being pursued. Sixty percent of the reported stem cell studies involved transplantation, of which over three quarters were allogeneic transplants. A high proportion of the cardiovascular systems articles were on allogeneic transplants in a number of different species, including several autologous studies. A number of pharmaceutical grade stem cell products have also recently been tested and reported on. Stem cell research shows considerable promise for the treatment of a number of disorders, some of which have entered clinical trials; over the next few years it will be interesting to see how these treatments progress in the clinic.
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Affiliation(s)
- David J Eve
- Center of Excellence for Aging & Brain Repair, Department of Neurosurgery and Brain Repair, University of South Florida College of Medicine, Tampa, FL 33612, USA.
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Debeb BG, Galat V, Epple-Farmer J, Iannaccone S, Woodward WA, Bader M, Iannaccone P, Binas B. Isolation of Oct4-expressing extraembryonic endoderm precursor cell lines. PLoS One 2009; 4:e7216. [PMID: 19784378 PMCID: PMC2747266 DOI: 10.1371/journal.pone.0007216] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2009] [Accepted: 09/04/2009] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND The extraembryonic endoderm (ExEn) defines the yolk sac, a set of membranes that provide essential support for mammalian embryos. Recent findings suggest that the committed ExEn precursor is present already in the embryonic Inner Cell Mass (ICM) as a group of cells that intermingles with the closely related epiblast precursor. All ICM cells contain Oct4, a key transcription factor that is first expressed at the morula stage. In vitro, the epiblast precursor is most closely represented by the well-characterized embryonic stem (ES) cell lines that maintain the expression of Oct4, but analogous ExEn precursor cell lines are not known and it is unclear if they would express Oct4. METHODOLOGY/PRINCIPAL FINDINGS Here we report the isolation and characterization of permanently proliferating Oct4-expressing rat cell lines ("XEN-P cell lines"), which closely resemble the ExEn precursor. We isolated the XEN-P cell lines from blastocysts and characterized them by plating and gene expression assays as well as by injection into embryos. Like ES cells, the XEN-P cells express Oct4 and SSEA1 at high levels and their growth is stimulated by leukemia inhibitory factor, but instead of the epiblast determinant Nanog, they express the ExEn determinants Gata6 and Gata4. Further, they lack markers characteristic of the more differentiated primitive/visceral and parietal ExEn stages, but exclusively differentiate into these stages in vitro and contribute to them in vivo. CONCLUSIONS/SIGNIFICANCE Our findings (i) suggest strongly that the ExEn precursor is a self-renewable entity, (ii) indicate that active Oct4 gene expression (transcription plus translation) is part of its molecular identity, and (iii) provide an in vitro model of early ExEn differentiation.
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Affiliation(s)
- Bisrat G. Debeb
- Department of Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, United States of America
| | - Vasiliy Galat
- Developmental Biology Program, Children's Memorial Research Center, Northwestern University, Chicago, Illinois, United States of America
| | - Jessica Epple-Farmer
- Department of Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, United States of America
| | - Steve Iannaccone
- Developmental Biology Program, Children's Memorial Research Center, Northwestern University, Chicago, Illinois, United States of America
| | - Wendy A. Woodward
- Division of Radiation Oncology, University of Texas M.D. Anderson Cancer Center, Houston, Texas, United States of America
| | - Michael Bader
- Max Delbruck Center for Molecular Medicine, Berlin, Germany
| | - Philip Iannaccone
- Developmental Biology Program, Children's Memorial Research Center, Northwestern University, Chicago, Illinois, United States of America
| | - Bert Binas
- Department of Pathobiology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, United States of America
- * E-mail:
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