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Cowardin CA, Syed S, Iqbal N, Jamil Z, Sadiq K, Iqbal J, Ali SA, Moore SR. Environmental enteric dysfunction: gut and microbiota adaptation in pregnancy and infancy. Nat Rev Gastroenterol Hepatol 2023; 20:223-237. [PMID: 36526906 PMCID: PMC10065936 DOI: 10.1038/s41575-022-00714-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/16/2022] [Indexed: 03/31/2023]
Abstract
Environmental enteric dysfunction (EED) is a subclinical syndrome of intestinal inflammation, malabsorption and barrier disruption that is highly prevalent in low- and middle-income countries in which poverty, food insecurity and frequent exposure to enteric pathogens impair growth, immunity and neurodevelopment in children. In this Review, we discuss advances in our understanding of EED, intestinal adaptation and the gut microbiome over the 'first 1,000 days' of life, spanning pregnancy and early childhood. Data on maternal EED are emerging, and they mirror earlier findings of increased risks for preterm birth and fetal growth restriction in mothers with either active inflammatory bowel disease or coeliac disease. The intense metabolic demands of pregnancy and lactation drive gut adaptation, including dramatic changes in the composition, function and mother-to-child transmission of the gut microbiota. We urgently need to elucidate the mechanisms by which EED undermines these critical processes so that we can improve global strategies to prevent and reverse intergenerational cycles of undernutrition.
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Affiliation(s)
- Carrie A Cowardin
- Division of Paediatric Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, Child Health Research Center, University of Virginia, Charlottesville, VA, USA
| | - Sana Syed
- Division of Paediatric Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, Child Health Research Center, University of Virginia, Charlottesville, VA, USA
- Department of Paediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - Najeeha Iqbal
- Department of Paediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - Zehra Jamil
- Department of Paediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - Kamran Sadiq
- Department of Paediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - Junaid Iqbal
- Department of Paediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - Syed Asad Ali
- Department of Paediatrics and Child Health, Aga Khan University, Karachi, Pakistan
| | - Sean R Moore
- Division of Paediatric Gastroenterology, Hepatology and Nutrition, Department of Paediatrics, Child Health Research Center, University of Virginia, Charlottesville, VA, USA.
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2
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Borges A, Castellan F, Irie N. Emergent roles of maternal microchimerism in postnatal development. Dev Growth Differ 2023; 65:75-81. [PMID: 36519824 DOI: 10.1111/dgd.12830] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/24/2022] [Accepted: 12/07/2022] [Indexed: 12/23/2022]
Abstract
Maternal microchimerism (MMc) is the phenomenon that a low number of cells from the mother persists within her progeny. Despite their regular presence in mammalian pregnancies, the overall cell type repertoire and roles of maternal cells, especially after birth, remain unclear. By using transgenic mouse strains and human umbilical blood samples, recent studies have for the first time characterized and quantified MMc cell type repertoires in offspring, identified the cross-generational influence on fetal immunity, and determined possible factors that affect their presence in offspring. This review summarizes new findings, especially on the maternal cell type repertoires and their potential role in utero, in postnatal life, and long after birth.
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Affiliation(s)
- Alexandria Borges
- Graduate School of Science, Department of Biological Sciences, The University of Tokyo, Tokyo, Japan
| | - Flore Castellan
- Graduate School of Science, Department of Biological Sciences, The University of Tokyo, Tokyo, Japan
| | - Naoki Irie
- Graduate School of Science, Department of Biological Sciences, The University of Tokyo, Tokyo, Japan
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3
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Fujimoto K, Nakajima A, Hori S, Tanaka Y, Shirasaki Y, Uemura S, Irie N. Whole-embryonic identification of maternal microchimeric cell types in mouse using single-cell RNA sequencing. Sci Rep 2022; 12:18313. [PMID: 36333354 PMCID: PMC9636240 DOI: 10.1038/s41598-022-20781-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 09/19/2022] [Indexed: 11/06/2022] Open
Abstract
Even though the mother and the fetus of placental mammals are immunologically non-self with respect to one other, mutual exchange of small numbers of cells between them is known to occur. Maternal cells entering the fetus, called maternal microchimeric cells (MMc cells), are thought to be involved in different physiological phenomena, such as establishing immune tolerance, tissue repair, and the pathogenesis or deterioration of some inflammatory diseases and congenital malformations. While specific MMc cell types have been reported as associated with these phenomena, the contribution of MMc cells to these different outcomes remains unknown. As one possibility, we hypothesized that different embryos have differing repertoires of MMc cell types, leading to or biasing embryos toward different fates. To date, no studies have succeeded in identifying the MMc cell type repertoire of a single embryo. Accordingly, here, we isolated MMc cells from whole mouse embryos, determined their types, and analyzed their MMc cell type variability. By combining our previously established, whole-embryonic MMc isolation method with single-cell RNA sequencing, we successfully estimated the cell type repertoires of MMc cells isolated from 26 mouse embryos. The majority of MMc cells were immune-related cells, such as myeloid cells and granulocytes. We also detected stem cell-like MMc cells expressing proliferation marker genes and terminally differentiated cells. As hypothesized, we noted statistically significant inter-individual variation in the proportion of immune-related cells in the different embryos. We here successfully estimated MMc cell types in individual whole mouse embryos. The proportion of immune-related cells significantly differed among the individual embryos, suggesting that the variations are one of the potential mechanisms underlying the differing MMc-related physiological phenomena in offspring. These findings provide insight into cell-level epigenetics by maternal cells.
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Affiliation(s)
- Kana Fujimoto
- grid.26999.3d0000 0001 2151 536XDepartment of Biological Sciences, Graduate School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan
| | - Akira Nakajima
- grid.26999.3d0000 0001 2151 536XGraduate School of Pharmaceutical Sciences, University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Shohei Hori
- grid.26999.3d0000 0001 2151 536XGraduate School of Pharmaceutical Sciences, University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Yumiko Tanaka
- grid.26999.3d0000 0001 2151 536XDepartment of Biological Sciences, Graduate School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan
| | - Yoshitaka Shirasaki
- grid.26999.3d0000 0001 2151 536XGraduate School of Pharmaceutical Sciences, University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Sotaro Uemura
- grid.26999.3d0000 0001 2151 536XDepartment of Biological Sciences, Graduate School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan
| | - Naoki Irie
- grid.26999.3d0000 0001 2151 536XDepartment of Biological Sciences, Graduate School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, 113-0033 Japan ,grid.26999.3d0000 0001 2151 536XUniversal Biology Institute, University of Tokyo, Bunkyo-ku, Tokyo, Japan
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Murrieta-Coxca JM, Fuentes-Zacarias P, Ospina-Prieto S, Markert UR, Morales-Prieto DM. Synergies of Extracellular Vesicles and Microchimerism in Promoting Immunotolerance During Pregnancy. Front Immunol 2022; 13:837281. [PMID: 35844513 PMCID: PMC9285877 DOI: 10.3389/fimmu.2022.837281] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
The concept of biological identity has been traditionally a central issue in immunology. The assumption that entities foreign to a specific organism should be rejected by its immune system, while self-entities do not trigger an immune response is challenged by the expanded immunotolerance observed in pregnancy. To explain this "immunological paradox", as it was first called by Sir Peter Medawar, several mechanisms have been described in the last decades. Among them, the intentional transfer and retention of small amounts of cells between a mother and her child have gained back attention. These microchimeric cells contribute to expanding allotolerance in both organisms and enhancing genetic fitness, but they could also provoke aberrant alloimmune activation. Understanding the mechanisms used by microchimeric cells to exert their function in pregnancy has proven to be challenging as per definition they are extremely rare. Profiting from studies in the field of transplantation and cancer research, a synergistic effect of microchimerism and cellular communication based on the secretion of extracellular vesicles (EVs) has begun to be unveiled. EVs are already known to play a pivotal role in feto-maternal tolerance by transferring cargo from fetal to maternal immune cells to reshape their function. A further aspect of EVs is their function in antigen presentation either directly or on the surface of recipient cells. Here, we review the current understanding of microchimerism in the feto-maternal tolerance during human pregnancy and the potential role of EVs in mediating the allorecognition and tropism of microchimeric cells.
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Affiliation(s)
| | | | | | - Udo R. Markert
- Placenta Lab, Department of Obstetrics, Jena University Hospital, Jena, Germany
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Engels G, Döhler B, Tönshoff B, Oh J, Kruchen A, Müller I, Süsal C. Maternal versus paternal living kidney transplant donation is associated with lower rejection in young pediatric recipients: A Collaborative Transplant Study report. Pediatr Transplant 2022; 26:e14154. [PMID: 34612565 DOI: 10.1111/petr.14154] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 09/02/2021] [Accepted: 09/13/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Approximately 1700 children per year with end-stage kidney disease undergo kidney transplantation in Europe and the United States of America; 30%-50% are living donor kidney transplantations. There may be immunological differences between paternal and maternal donors due to transplacental exchange of cells between the mother and fetus during pregnancy leading to microchimerism. We investigated whether the outcome of living-related kidney transplantation in young children is different after maternal compared with paternal organ donation. METHODS Using the international Collaborative Transplant Study (CTS) database, we analyzed epidemiological data of 7247 children and adolescents aged <18 years who had received a kidney transplant from either mother or father. Risk of treated rejection episodes and death-censored graft failure were computed using the Kaplan-Meier method and multivariable Cox regression. RESULTS In the recipient age group 1-4 years, the rate of treated rejection episodes in recipients of kidneys from maternal donors (N = 195) during the first 2 years post-transplant was significantly lower (hazard ratio HR = 0.47, p = .004) than in patients receiving kidneys from paternal donors (N = 179). This association between donor sex and risk of treated rejections was not observed in children aged 5-9 years. The 5-year death-censored graft survival in children aged 1-4 years with a maternal or paternal donor was comparable. CONCLUSIONS Maternal kidney donation in young pediatric renal transplant recipients is associated with an approximately 50% lower rate of treated rejection than paternal kidney donation. Whether this phenomenon is due to maternal microchimerism-induced donor-specific hyporesponsiveness must be evaluated in prospective mechanistic studies.
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Affiliation(s)
- Geraldine Engels
- Department of Pediatrics, University Children's Hospital, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Pediatrics, University of Würzburg, Würzburg, Germany
| | - Bernd Döhler
- Institute of Immunology, Transplantation Immunology, Heidelberg University Hospital, Heidelberg, Germany
| | - Burkhard Tönshoff
- Department of Pediatrics I, University Children's Hospital, University of Heidelberg, Heidelberg, Germany
| | - Jun Oh
- Department of Pediatrics, University Children's Hospital, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anne Kruchen
- Division of Pediatric Stem Cell Transplantation and Immunology, Department of Pediatric Hematology and Oncology, University Medical Center Hamburg- Eppendorf, Hamburg, Germany
| | - Ingo Müller
- Division of Pediatric Stem Cell Transplantation and Immunology, Department of Pediatric Hematology and Oncology, University Medical Center Hamburg- Eppendorf, Hamburg, Germany
| | - Caner Süsal
- Institute of Immunology, Transplantation Immunology, Heidelberg University Hospital, Heidelberg, Germany
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6
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Kandasamy K, Tan LG, B Johana N, Tan YW, Foo W, Yeo JSL, Ravikumar V, Ginhoux F, Choolani M, Chan JKY, Mattar CNZ. Maternal microchimerism and cell-mediated immune-modulation enhance engraftment following semi-allogenic intrauterine transplantation. FASEB J 2021; 35:e21413. [PMID: 33570785 DOI: 10.1096/fj.202002185rr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 01/04/2021] [Accepted: 01/20/2021] [Indexed: 11/11/2022]
Abstract
Successful intrauterine hematopoietic cell transplantation (IUT) for congenital hemoglobinopathies is hampered by maternal alloresponsiveness. We investigate these interactions in semi-allogenic murine IUT. E14 fetuses (B6 females × BALB/c males) were each treated with 5E+6 maternal (B6) or paternal (BALB/c) bone marrow cells and serially monitored for chimerism (>1% engraftment), trafficked maternal immune cells, and immune responsiveness to donor cells. A total of 41.0% of maternal IUT recipients (mIUT) were chimeras (mean donor chimerism 3.0 ± 1.3%) versus 75.0% of paternal IUT recipients (pIUT, 3.6 ± 1.1%). Chimeras showed higher maternal microchimerism of CD4, CD8, and CD19 than non-chimeras. These maternal cells showed minimal responsiveness to B6 or BALB/c stimulation. To interrogate tolerance, mIUT were injected postnatally with 5E+6 B6 cells/pup; pIUT received BALB/c cells. IUT-treated pups showed no changes in trafficked maternal or fetal immune cell levels compared to controls. Donor-specific IgM and IgG were expressed by 1%-3% of recipients. mIUT splenocytes showed greater proliferation of regulatory T cells (Treg) upon BALB/c stimulation, while B6 stimulation upregulated the pro-inflammatory cytokines more than BALB/c. pIUT splenocytes produced identical Treg and cytokine responses to BALB/c and B6 cells, with higher Treg activity and lower pro-inflammatory cytokine expression upon exposure to BALB/c. In contrast, naïve fetal splenocytes demonstrated greater alloresponsiveness to BALB/c compared to B6 cells. Thus pIUT, associated with increased maternal cell trafficking, modulates fetal Treg, and cytokine responsiveness to donor cells more efficiently than mIUT, resulting in improved engraftment. Paternal donor cells may be considered alternatively to maternal donor cells for intrauterine and postnatal transplantation to induce tolerance and maintain engraftment.
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Affiliation(s)
- Karthikeyan Kandasamy
- Experimental Fetal Medicine Group, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Lay Geok Tan
- Experimental Fetal Medicine Group, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Obstetrics and Gynaecology, National University Hospital, National University Health System, Singapore, Singapore
| | - Nuryanti B Johana
- Reproductive Medicine, KK Women's and Children's Hospital, Singapore, Singapore
| | - Yi Wan Tan
- Reproductive Medicine, KK Women's and Children's Hospital, Singapore, Singapore
| | - Wanling Foo
- Experimental Fetal Medicine Group, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Julie S L Yeo
- Reproductive Medicine, KK Women's and Children's Hospital, Singapore, Singapore
| | - Vikashini Ravikumar
- Experimental Fetal Medicine Group, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Florent Ginhoux
- Singapore Immunology Network (SIgN), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Mahesh Choolani
- Experimental Fetal Medicine Group, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Obstetrics and Gynaecology, National University Hospital, National University Health System, Singapore, Singapore
| | - Jerry K Y Chan
- Reproductive Medicine, KK Women's and Children's Hospital, Singapore, Singapore.,Cancer and Stem Cell Biology Program, Duke-NUS Graduate Medical School, Singapore, Singapore
| | - Citra N Z Mattar
- Experimental Fetal Medicine Group, Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,Department of Obstetrics and Gynaecology, National University Hospital, National University Health System, Singapore, Singapore
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7
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Iwai S, Okada A, Sasano K, Endo M, Yamazaki S, Wang X, Shimbo T, Tomimatsu T, Kimura T, Tamai K. Controlled induction of immune tolerance by mesenchymal stem cells transferred by maternal microchimerism. Biochem Biophys Res Commun 2021; 539:83-88. [PMID: 33461067 DOI: 10.1016/j.bbrc.2020.12.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 12/11/2020] [Indexed: 12/20/2022]
Abstract
Feto-maternal immune tolerance is established during pregnancy; however, its mechanism and maintenance remain underexplored. Here, we investigated whether mesenchymal stem/stromal cells (MSCs) as non-inherited maternal antigens (NIMAs) transferred by maternal microchimerism could induce immune tolerance. We showed that MSCs had a potential equivalent to hematopoietic stem and progenitor cells (HSPCs) to induce immune tolerance and that MSCs were essential to induce tolerance to MSC-specific antigens. Furthermore, we demonstrated that MSCs as NIMAs transferred by maternal microchimerism could induce robust immune tolerance that can be further enhanced using a drug. Our data shed light on induction of immune tolerance and serve as a foundation to develop new therapies using maternally derived cells for autoimmune or genetic diseases.
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Affiliation(s)
- Sayuri Iwai
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Aiko Okada
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Kei Sasano
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Masayuki Endo
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan; StemRIM Institute of Regeneration-Inducing Medicine, Osaka University, Suita, Japan; Department of Children's and Women's Health, Division of Health Science, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.
| | - Sho Yamazaki
- Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Japan; StemRIM Inc, Ibaraki, Osaka, Japan
| | - Xin Wang
- Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Japan; StemRIM Inc, Ibaraki, Osaka, Japan
| | - Takashi Shimbo
- Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Japan; StemRIM Institute of Regeneration-Inducing Medicine, Osaka University, Suita, Japan
| | - Takuji Tomimatsu
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Tadashi Kimura
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Katsuto Tamai
- Department of Stem Cell Therapy Science, Graduate School of Medicine, Osaka University, Suita, Japan.
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Pan TD, Kanaan SB, Lee NR, Avila JL, Nelson JL, Eisenberg DTA. Predictors of maternal-origin microchimerism in young women in the Philippines. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2020; 174:213-223. [PMID: 33300155 DOI: 10.1002/ajpa.24191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/17/2020] [Accepted: 11/09/2020] [Indexed: 11/07/2022]
Abstract
OBJECTIVES Microchimerism is the presence of a small quantity of cells or DNA from a genetically distinct individual. This phenomenon occurs with bidirectional maternal-fetal exchange during pregnancy. Microchimerism can persist for decades after delivery and have long-term health implications. However, little is known about why microchimerism is detectable at varying levels in different individuals. We examine the variability and the following potential determinants of maternal-origin microchimerism (MMc) in young women in the Philippines: gestational duration (in utero exposure to MMc), history of being breastfed (postpartum exposure to MMc), maternal telomere length (maternal cells' ability to replicate and persist), and participant's pregnancies in young adulthood (effect of adding fetal-origin microchimerism to preexisting MMc). MATERIALS AND METHODS Data are from the Cebu Longitudinal Health and Nutrition Survey, a population-based study of infant feeding practices and long-term health outcomes. We quantified MMc using quantitative PCR (qPCR) in 89 female participants, ages 20-22, and analyzed these data using negative binomial regression. RESULTS In a multivariate model including all predictors, being breastfed substantially predicted decreased MMc (detection rate ratio = 0.15, p = 0.007), and there was a trend of decreasing MMc in participants who had experienced more pregnancies (detection rate ratio = 0.55, p = 0.057). DISCUSSION These results might be explained by breastfeeding having lasting impact on immune regulatory networks, thus reducing MMc persistence. MMc may also decrease in response to the introduction of fetal-origin microchimerism with pregnancies experienced in adulthood.
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Affiliation(s)
- Tiffany D Pan
- Department of Anthropology, University of Washington, Seattle, Washington, USA
- Center for Studies in Demography and Ecology, University of Washington, Seattle, Washington, USA
| | - Sami B Kanaan
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
| | - Nanette R Lee
- USC-Office of Population Studies Foundation, Inc., Cebu City, Philippines
- Department of Anthropology, Sociology & History, University of San Carlos, Cebu City, Philippines
| | - Josephine L Avila
- USC-Office of Population Studies Foundation, Inc., Cebu City, Philippines
- Department of Architecture, School of Architecture, Fine Arts and Design, University of San Carlos, Cebu City, Philippines
| | - J Lee Nelson
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, Washington, USA
- Department of Medicine, University of Washington, Seattle, Washington, USA
| | - Dan T A Eisenberg
- Department of Anthropology, University of Washington, Seattle, Washington, USA
- Center for Studies in Demography and Ecology, University of Washington, Seattle, Washington, USA
- Department of Biology, University of Washington, Seattle, Washington, USA
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9
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Maternal microchimerism protects hemophilia A patients from inhibitor development. Blood Adv 2020; 4:1867-1869. [PMID: 32374877 DOI: 10.1182/bloodadvances.2020001832] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 04/01/2020] [Indexed: 11/20/2022] Open
Abstract
Key Points
Deleterious F8 mutations do not necessarily lead to the incidence of inhibitors in hemophilia A patients receiving replacement therapy. Maternal chimeric cells migrated into a fetus with hemophilia A during pregnancy could induce tolerance toward FVIII.
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10
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Laouar A. Maternal Leukocytes and Infant Immune Programming during Breastfeeding. Trends Immunol 2020; 41:225-239. [PMID: 32057705 DOI: 10.1016/j.it.2020.01.005] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 01/10/2020] [Accepted: 01/12/2020] [Indexed: 12/11/2022]
Abstract
The fetal immune system develops in a rather sterile environment relative to the outside world and, therefore, lacks antigenic education. Soon after birth, the newborn is exposed to the hostile environment of pathogens. Recently, animal- and limited human-based studies have indicated that help from the mother, upon transfer of leukocytes and their products via breast milk feeding, greatly assists the newborn's immune system. Here, I discuss the newest advances on how milk leukocytes impact early life immunity, with an emphasis on the development of the infant T cell repertoire and early immune responses in the periphery and gut-associated lymphoid tissue. A deeper understanding of these novel mechanistic insights may inform potential translational approaches to improving immunity in infants.
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Affiliation(s)
- Amale Laouar
- Surgery Department and the Child Health Institute of New Jersey, Robert Wood Johnson Medical School-Rutgers University, 89 French Street, New Brunswick, NJ 08901, USA.
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11
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Tripathy S, Singh S, Das SK. Potential of breastmilk in stem cell research. Cell Tissue Bank 2019; 20:467-488. [PMID: 31606767 DOI: 10.1007/s10561-019-09791-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 10/01/2019] [Indexed: 11/28/2022]
Abstract
Breastmilk is a dynamic, multi-faceted, and complex fluid containing a plethora of biochemical and cellular components that execute developmental effects or differentiation program, providing nourishment and immunity to newborns. Recently, it was reported that breastmilk contains a heterogeneous population of naïve cells, including pluripotent stem cells, multipotent stem cells, immune cells, and non-immune cells. The stem cells derived from breastmilk possess immune privilege and non-tumorigenic properties. Thus, breastmilk may represent an ideal source of stem cells collected by non-perceive procedure than other available sources. Thus, this "maternally originating natural regenerative medicine" may have innumerable applications in clinical biology, cosmetics, and pharmacokinetics. This review describes the efficient integrated cellular system of mammary glands, the impressive stem cell hierarchy of breastmilk, and their possible implications in translational research and therapeutics.
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Affiliation(s)
- Seema Tripathy
- Centre for Biotechnology, Siksha 'O' Anusandhan (Deemed to be University), Kalinga Nagar, Ghatikia, Bhubaneswar, 751 003, India.
| | - Shikha Singh
- Centre for Biotechnology, Siksha 'O' Anusandhan (Deemed to be University), Kalinga Nagar, Ghatikia, Bhubaneswar, 751 003, India
| | - Saroj Kumar Das
- Centre for Biotechnology, Siksha 'O' Anusandhan (Deemed to be University), Kalinga Nagar, Ghatikia, Bhubaneswar, 751 003, India
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12
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Ninkina N, Kukharsky MS, Hewitt MV, Lysikova EA, Skuratovska LN, Deykin AV, Buchman VL. Stem cells in human breast milk. Hum Cell 2019; 32:223-230. [PMID: 30972555 PMCID: PMC6570695 DOI: 10.1007/s13577-019-00251-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 03/10/2019] [Indexed: 01/03/2023]
Abstract
Recent studies have demonstrated that breast milk contains a population of cells displaying many of the properties typical of stem cells. This review outlines progress made in this newly emerging field of stem cell biology and provides an analysis of the available data on purification, propagation and differentiation of certain types of progenitor cells from breast milk. The possible fates of breast milk cells, including microchimerism caused by their transmission to the distant organs of the infant, are also discussed. Unique properties of breast milk-derived stem cells, such as their unusually low tumorigenic potential and their negligible ability to form teratomas, are highlighted as obvious advantages for using these cells in regenerative therapy.
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Affiliation(s)
- Natalia Ninkina
- Institute of Physiology Active Compounds, Russian Academy of Sciences, 1 Severnyj Proezd, Chernogolovka, Russian Federation.
- Cardiff University, Life Sciences Building, Museum Avenue, Cardiff, Wales, CF10 3AX, UK.
| | - Michail S Kukharsky
- Institute of Physiology Active Compounds, Russian Academy of Sciences, 1 Severnyj Proezd, Chernogolovka, Russian Federation
- Pirogov Russian National Research Medical University, Ostrovitianova str 1, Moscow, Russian Federation
| | - Maria V Hewitt
- Institute of Physiology Active Compounds, Russian Academy of Sciences, 1 Severnyj Proezd, Chernogolovka, Russian Federation
| | - Ekaterina A Lysikova
- Institute of Physiology Active Compounds, Russian Academy of Sciences, 1 Severnyj Proezd, Chernogolovka, Russian Federation
| | - Larissa N Skuratovska
- The Institute of General Pathology and Pathophysiology, 8 Baltiyskaya st., Moscow, 125315, Russian Federation
| | - Alexey V Deykin
- Institute of Gene Biology, Russian Academy of Sciences, Vavilova str., 34/5, Moscow, 19334, Russian Federation
| | - Vladimir L Buchman
- Institute of Physiology Active Compounds, Russian Academy of Sciences, 1 Severnyj Proezd, Chernogolovka, Russian Federation
- Cardiff University, Life Sciences Building, Museum Avenue, Cardiff, Wales, CF10 3AX, UK
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13
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Knoop KA, Holtz LR, Newberry RD. Inherited nongenetic influences on the gut microbiome and immune system. Birth Defects Res 2018; 110:1494-1503. [PMID: 30576093 PMCID: PMC8759455 DOI: 10.1002/bdr2.1436] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 11/16/2018] [Indexed: 12/18/2022]
Abstract
The gut microbiome and the immune system codevelop around the time of birth, well after genetic information has been passed from the parents to the offspring. Each of these "organ systems" displays plasticity. The immune system can mount highly specific adaptive responses to newly encountered antigens, and the gut microbiota is affected by changes in the environment. Despite this plasticity, there is a growing appreciation that these organ systems, once established, are remarkably stable. In health, the immune system rapidly mounts responses to infections, and once cleared, resolves inflammatory responses to return to homeostasis. However, a skewed immune system, such as seen in allergy, does not easily return to homeostasis. Allergic responses are often seen to multiple antigens. Likewise, a dysbiotic gut microbiota is seen in multiple diseases. Attempts to reset the gut microbiota as a therapy for disease have met with varied success. Therefore, how these codeveloping "organ systems" become established is a central question relevant to our overall health. Recent observations suggest that maternal factors encountered both in utero and after birth can directly or indirectly impact the development of the offspring's gut microbiome and immune system. Here, we discuss how these nongenetic maternal influences can have long-term effects on the progeny's health.
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Affiliation(s)
- Kathryn A. Knoop
- Department of Medicine, Washington University School of Medicine in Saint Louis, MO 63110
| | - Lori R. Holtz
- Department of Pediatrics, Washington University School of Medicine in Saint Louis, MO 63110
| | - Rodney D. Newberry
- Department of Medicine, Washington University School of Medicine in Saint Louis, MO 63110
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14
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Aydın MŞ, Yiğit EN, Vatandaşlar E, Erdoğan E, Öztürk G. Transfer and Integration of Breast Milk Stem Cells to the Brain of Suckling Pups. Sci Rep 2018; 8:14289. [PMID: 30250150 PMCID: PMC6155265 DOI: 10.1038/s41598-018-32715-5] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 09/12/2018] [Indexed: 01/19/2023] Open
Abstract
Beside its unique nutritional content breast milk also contains live cells from the mother. Fate of these cells in the offspring has not been adequately described. In this study, we aimed to detect and identify maternal cells in the suckling’s blood and the brain. Green fluorescent protein expressing transgenic female mice (GFP+) were used as foster mothers to breastfeed wildtype newborn pups. One week and two months after the birth, blood samples and brains of the sucklings were analyzed to detect presence of GFP+ cells by fluorescence activated cell sorting, polymerase chain reaction and immunohistochemistry on the brain sections and optically cleared brains. The tests confirmed that maternal cells were detectable in the blood and the brain of the pups and that they differentiated into both neuronal and glial cell types in the brain. This phenomenon represents breastfeeding – induced microchimerism in the brain with functional implications remain to be understood.
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Affiliation(s)
- Mehmet Şerif Aydın
- Regenerative and Restorative Medicine Research Center, Istanbul Medipol University, Istanbul, 34810, Turkey
| | - Esra Nur Yiğit
- Regenerative and Restorative Medicine Research Center, Istanbul Medipol University, Istanbul, 34810, Turkey
| | - Emre Vatandaşlar
- Regenerative and Restorative Medicine Research Center, Istanbul Medipol University, Istanbul, 34810, Turkey
| | - Ender Erdoğan
- Department of Histology and Embryology, Faculty of Medicine, Selcuk University, Konya, 42030, Turkey
| | - Gürkan Öztürk
- Regenerative and Restorative Medicine Research Center, Istanbul Medipol University, Istanbul, 34810, Turkey. .,Department of Physiology, International School of Medicine, Istanbul Medipol University, Istanbul, 34810, Turkey.
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15
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Molès JP, Tuaillon E, Kankasa C, Bedin AS, Nagot N, Marchant A, McDermid JM, Van de Perre P. Breastmilk cell trafficking induces microchimerism-mediated immune system maturation in the infant. Pediatr Allergy Immunol 2018; 29:133-143. [PMID: 29197124 DOI: 10.1111/pai.12841] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/28/2017] [Indexed: 12/31/2022]
Abstract
Initiating breastfeeding within the first hour of life confers an important benefit in terms of child mortality and severe morbidity. Intestinal permeability to ingested macromolecules and immunoglobulins is limited to the first days of human life. These exchanges cease in the very early post-partum period but may increase beyond the neonatal period in response to local inflammation or introduction of a weaning food. From animal- and limited human-based observations, compelling evidence points out to breastmilk cells also trafficking from mother to infant mucosal tissues and participating to the maternal microchimerism. The precise nature of breastmilk cells that are involved is presently not known but likely includes progenitor/stem cells-representing up to 6% of breastmilk cells-with possible contribution of mature immune cells. Stem cell microchimerism may induce tolerance to non-inherited maternal antigens (NIMAs), breastfeeding generating regulatory T cells (Treg ) that suppress antimaternal immunity. Therefore, in complement to pregnancy-induced microchimerism, breastfeeding-induced microchimerism may be pivotal in infant immune development, intestinal tissue repair/growth and protection against infectious diseases. As a continuum of the gestational period, the neonatal gut may be considered as a temporary, but important developmental extension of the role played by the placenta during intrauterine life; breastmilk playing the role of maternal blood by delivering maternal soluble factors (macromolecules, Ig, cytokines) and immunologically active milk cells. A better understanding of breastfeeding-induced maternal microchimerism would provide further evidence in support of public health messages that reinforce the importance of early initiation of breastfeeding.
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Affiliation(s)
- Jean-Pierre Molès
- Pathogenesis and Control of Chronic Infections, INSERM, EFS, Université de Montpellier, Montpellier, France
| | - Edouard Tuaillon
- Pathogenesis and Control of Chronic Infections, INSERM, EFS, Université de Montpellier, Montpellier, France.,Department of Bacteriology-Virology and Department of Medical Information, CHU Montpellier, Montpellier, France
| | - Chipepo Kankasa
- Department of Paediatrics and Child Health, School of Medicine, University Teaching Hospital, University of Zambia, Lusaka, Zambia
| | - Anne-Sophie Bedin
- Pathogenesis and Control of Chronic Infections, INSERM, EFS, Université de Montpellier, Montpellier, France
| | - Nicolas Nagot
- Pathogenesis and Control of Chronic Infections, INSERM, EFS, Université de Montpellier, Montpellier, France.,Department of Bacteriology-Virology and Department of Medical Information, CHU Montpellier, Montpellier, France
| | - Arnaud Marchant
- Institute for Medical Immunology, Université Libre de Bruxelles, Brussels, Belgium
| | - Joann M McDermid
- Division of Infectious Diseases & International Health, Department of Medicine, School of Medicine, University of Virginia, Charlottesville, VA, USA
| | - Philippe Van de Perre
- Pathogenesis and Control of Chronic Infections, INSERM, EFS, Université de Montpellier, Montpellier, France.,Department of Bacteriology-Virology and Department of Medical Information, CHU Montpellier, Montpellier, France
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16
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Henrick BM, Yao XD, Nasser L, Roozrogousheh A, Rosenthal KL. Breastfeeding Behaviors and the Innate Immune System of Human Milk: Working Together to Protect Infants against Inflammation, HIV-1, and Other Infections. Front Immunol 2017; 8:1631. [PMID: 29238342 PMCID: PMC5712557 DOI: 10.3389/fimmu.2017.01631] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 11/09/2017] [Indexed: 12/21/2022] Open
Abstract
The majority of infants’ breastfeeding from their HIV-infected mothers do not acquire HIV-1 infection despite exposure to cell-free virus and cell-associated virus in HIV-infected breast milk. Paradoxically, exclusive breastfeeding regardless of the HIV status of the mother has led to a significant decrease in mother-to-child transmission (MTCT) compared with non-exclusive breastfeeding. Although it remains unclear how these HIV-exposed infants remain uninfected despite repeated and prolonged exposure to HIV-1, the low rate of transmission is suggestive of a multitude of protective, short-lived bioactive innate immune factors in breast milk. Indeed, recent studies of soluble factors in breast milk shed new light on mechanisms of neonatal HIV-1 protection. This review highlights the role and significance of innate immune factors in HIV-1 susceptibility and infection. Prevention of MTCT of HIV-1 is likely due to multiple factors, including innate immune factors such as lactoferrin and elafin among many others. In pursuing this field, our lab was the first to show that soluble toll-like receptor 2 (sTLR2) directly inhibits HIV infection, integration, and inflammation. More recently, we demonstrated that sTLR2 directly binds to selective HIV-1 proteins, including p17, gp41, and p24, leading to significantly reduced NFκB activation, interleukin-8 production, CCR5 expression, and HIV infection in a dose-dependent manner. Thus, a clearer understanding of soluble milk-derived innate factors with known antiviral functions may provide new therapeutic insights to reduce vertical HIV-1 transmission and will have important implications for protection against HIV-1 infection at other mucosal sites. Furthermore, innate bioactive factors identified in human milk may serve not only in protecting infants against infections and inflammation but also the elderly; thus, opening the door for novel innate immune therapeutics to protect newborns, infants, adults, and the elderly.
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Affiliation(s)
- Bethany M Henrick
- Department of Food Science and Technology, University of California, Davis, Davis, CA, United States.,Foods for Health Institute, University of California, Davis, Davis, CA, United States
| | - Xiao-Dan Yao
- McMaster Immunology Research Centre, Department of Pathology and Molecular Medicine, Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, ON, Canada
| | - Laila Nasser
- McMaster Immunology Research Centre, Department of Pathology and Molecular Medicine, Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, ON, Canada
| | - Ava Roozrogousheh
- McMaster Immunology Research Centre, Department of Pathology and Molecular Medicine, Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, ON, Canada
| | - Kenneth L Rosenthal
- McMaster Immunology Research Centre, Department of Pathology and Molecular Medicine, Michael G. DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, ON, Canada
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17
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Dutta P, Dart ML, Schumacher SM, Burlingham WJ. Fetal microchimerism persists at high levels in c-kit stem cells in sensitized mothers. CHIMERISM 2017; 1:51-5. [PMID: 21327047 DOI: 10.4161/chim.1.2.14295] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2010] [Revised: 11/29/2010] [Accepted: 11/30/2010] [Indexed: 01/14/2023]
Abstract
We previously showed that fetal and maternal exposure to non-inherited maternal antigens (NIMA) during gestation and nursing resulted in lifelong tolerance to NIMA in some offspring. This NIMA-specific tolerance was mediated by regulatory T cells (Tregs) and was correlated with the level of multi-lineage maternal microchimerism (Mc) indicating a causative link between Mc and Treg development. To determine if transfer of fetal cells into mothers resulted in a similar tolerance to fetal cells, we used qPCR to detect rare fetal derived cells and a delayed type hypersensitivity (DTH) assay to detect fetal alloantigen-specific effector and regulatory T cells in mothers. We found that 5/8 B6 mothers of H2(b/d) offspring were sensitized to the alloantigens H2(d) and HY, indicating a dominance of alloantigen-specific effector T cells. Though these sensitized mothers did not have detectable fetal Mc (FMc) in any of the organs tested, they had very high levels of fetus-derived c-kit(+) stem cells in their bone marrow. The remaining 3/8 B6 mothers that were not sensitized to the fetal antigens had detectable FMc found mostly in heart, lungs and liver, and in 2/3, we could detect alloantigen-specific regulatory T cells. This data indicates that, as in NIMA-specific tolerance, tolerance in multiparous females to inherited paternal antigens (IPA) expressed by the fetus is associated with the presence of fetal Mc in differentiated cell subsets. Surprisingly, robust lin(-)c-kit(+) bone marrow cell fetal Mc can occur in sensitized mothers. This suggests a continuous source of allospecific priming, coupled with active elimination of mature IPA-expressing lin(+) cells by effector T cells of the maternal host.
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Affiliation(s)
- Partha Dutta
- Department of Surgery; School of Medicine and Public Health; University of Wisconsin; Madison, WI USA
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18
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Abstract
BACKGROUND The benefits of breast milk are well described, yet the mechanistic details related to how breast milk protects against acute and chronic diseases and optimizes neurodevelopment remain largely unknown. Recently, breast milk was found to contain stem cells that are thought to be involved in infant development. PURPOSE The purpose of this review was to synthesize all available research involving the characterization of breast milk stem cells to provide a basis of understanding for what is known and what still needs further exploration. METHODS/SEARCH STRATEGY The literature search was conducted between August and October 2015 using the CINAHL, PubMed, and reference list searching. Nine studies addressed characterization of human breast milk stem cells. FINDINGS/RESULTS Five research teams in 4 countries have published studies on breast milk stem cells. Current research has focused on characterizing stem cells in full-term breast milk. The amount, phenotype, and expression of breast milk stem cells are known to vary between mothers, and they have been able to differentiate into all 3 germ layers (expressing pluripotent characteristics). IMPLICATIONS FOR PRACTICE There is much to learn about breast milk stem cells. Given the potential impact of this research, healthcare professionals should be aware of their presence and ongoing research to determine benefits for infants. IMPLICATIONS FOR RESEARCH Extensive research is needed to further characterize stem cells in breast milk (full-term and preterm), throughout the stages of lactation, and most importantly, their role in the health of infants, and potential for use in regenerative therapies.
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19
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Abd Allah SH, Shalaby SM, El-Shal AS, El Nabtety SM, Khamis T, Abd El Rhman SA, Ghareb MA, Kelani HM. Breast milk MSCs: An explanation of tissue growth and maturation of offspring. IUBMB Life 2016; 68:935-942. [DOI: 10.1002/iub.1573] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 09/26/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Somia H. Abd Allah
- Medical Biochemistry Department, Faculty of Medicine; Zagazig University; Zagazig Egypt
| | - Sally M. Shalaby
- Medical Biochemistry Department, Faculty of Medicine; Zagazig University; Zagazig Egypt
| | - Amal S. El-Shal
- Medical Biochemistry Department, Faculty of Medicine; Zagazig University; Zagazig Egypt
| | - Sameh M. El Nabtety
- Pharmacology Department, Faculty of Veterinary Medicine; Zagazig University; Zagazig Egypt
| | - Tarek Khamis
- Pharmacology Department, Faculty of Veterinary Medicine; Zagazig University; Zagazig Egypt
| | - Shimaa A. Abd El Rhman
- Histology and Cell Biology Department, Faculty of Medicine; Zagazig University; Zagazig Egypt
| | - Mahmoud A. Ghareb
- Gynecology & Obestetric Department, Faculty of Medicine; Zagazig University; Zagazig Egypt
| | - Hesham M. Kelani
- ENT Department, Faculty of Medicine; Zagazig University; Zagazig Egypt
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20
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Haynes WJ, Jankowska-Gan E, Haynes L, Burlingham WJ. Microchimerism and regulation in living related kidney transplant families. CHIMERISM 2015; 5:80-5. [PMID: 26679771 DOI: 10.1080/19381956.2015.1111974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Long-term harmful effects of immunosuppressive drugs and chronic rejection are a persistent impetus to establish methods to induce immunological tolerance to allografts. PCR-based studies have found evidence that humans and other placental mammals can have prolonged extremely low levels of maternal cells as well as other non-self cells, referred to as microchimerism. The persistence of these cells suggests a mechanism for the maintenance of the regulatory T-cell (Treg) responses frequently detected in offspring to non-inherited maternal antigens. We test the hypothesis that the detection of very low copy levels of insertion/deletion (Indel) alleles consistent with non-inherited maternal genes, will correlate with immune regulation to non-inherited maternal antigens as detected by a trans-vivo Delayed-Type Hypersensitivity (tvDTH) assay in kidney transplant recipients, normal donors and their immediate biological family members. Preliminary data reported here compares qPCR amplification of rare DNA templates in the peripheral blood polymorphonuclear (PMN) fraction of cells, with the results of tvDTH assays for linked suppression of recall antigen responses in the presence of non-inherited maternal antigens [NIMA]. The two assays do not show a definitive correlation.
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Affiliation(s)
- W John Haynes
- a Department of Surgery ; School of Medicine and Public Health; University of Wisconsin ; Madison , WI USA
| | - Ewa Jankowska-Gan
- a Department of Surgery ; School of Medicine and Public Health; University of Wisconsin ; Madison , WI USA
| | - Lynn Haynes
- a Department of Surgery ; School of Medicine and Public Health; University of Wisconsin ; Madison , WI USA
| | - William J Burlingham
- a Department of Surgery ; School of Medicine and Public Health; University of Wisconsin ; Madison , WI USA
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21
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Burlingham WJ. Exosomes: The missing link between microchimerism and acquired tolerance? CHIMERISM 2015; 5:63-7. [PMID: 26679558 DOI: 10.1080/19381956.2015.1082026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
It has become increasingly clear that the immune system of viviparous mammals is much more in the business of acquiring tolerance to non-self antigens, than it is in rejecting cells that express them (for a recent review, highlighting the role of Treg cells, see ref. (1) ). It is also clear that both self-tolerance, and acquired tolerance to non-self is a dynamic process, with a natural ebb and flow. As has been often said of an effective team defense in sports, tolerance will "bend but does not break." How microchimerism, defined as the presence of extremely rare [1/10(4)-1/10(6)] cells of a genetically different individual, can induce either new immunogenetic pressures that push self-tolerance to the breaking point, or alternatively, provide relief from pre-existing immunogenetic risk, preventing development of autoimmune disease, remains a mystery. Indeed, the inability to directly correlate DNA-level microchimerism detected in blood samples by qPCR, with naturally occurring regulation to minor H and MHC alloantigens expressed by the rare cells themselves, has been frustrating to researchers in this field. (2) [Haynes, W.J. et al, this issue] However, recent developments in the areas of transplantation and reproductive immunology offer clues to how the effects of microchimerism can be amplified, and how a disproportionate immune impact might occur from a very limited cell source.
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Affiliation(s)
- William J Burlingham
- a Department of Surgery; Division of Transplantation ; University of Wisconsin ; Madison , WI , USA
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22
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Eikmans M, van Halteren AGS, van Besien K, van Rood JJ, Drabbels JJM, Claas FHJ. Naturally acquired microchimerism: implications for transplantation outcome and novel methodologies for detection. CHIMERISM 2015; 5:24-39. [PMID: 24762743 DOI: 10.4161/chim.28908] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Microchimerism represents a condition where one individual harbors genetically distinct cell populations, and the chimeric population constitutes <1% of the total number of cells. The most common natural source of microchimerism is pregnancy. The reciprocal cell exchange between a mother and her child often leads to the stable engraftment of hematopoietic and non-hematopoietic stem cells in both parties. Interaction between cells from the mother and those from the child may result in maternal immune cells becoming sensitized to inherited paternal alloantigens of the child, which are not expressed by the mother herself. Vice versa, immune cells of the child may become sensitized toward the non-inherited maternal alloantigens of the mother. The extent of microchimerism, its anatomical location, and the sensitivity of the techniques used for detecting its presence collectively determine whether microchimerism can be detected in an individual. In this review, we focus on the clinical consequences of microchimerism in solid organ and hematopoietic stem cell transplantation, and propose concepts derived from data of epidemiologic studies. Next, we elaborate on the latest molecular methodology, including digital PCR, for determining in a reliable and sensitive way the extent of microchimerism. For the first time, tools have become available to isolate viable chimeric cells from a host background, so that the challenges of establishing the biologic mechanisms and function of these cells may finally be tackled.
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Affiliation(s)
- Michael Eikmans
- Department of Immunohematology and Blood Transfusion; Leiden University Medical Center; Leiden, the Netherlands
| | - Astrid G S van Halteren
- Immunology Laboratory; Willem Alexander Children's Hospital; Leiden University Medical Center; Leiden, the Netherlands
| | | | - Jon J van Rood
- Department of Immunohematology and Blood Transfusion; Leiden University Medical Center; Leiden, the Netherlands; Europdonor Foundation; Leiden, the Netherlands
| | - Jos J M Drabbels
- Department of Immunohematology and Blood Transfusion; Leiden University Medical Center; Leiden, the Netherlands
| | - Frans H J Claas
- Department of Immunohematology and Blood Transfusion; Leiden University Medical Center; Leiden, the Netherlands
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23
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Maternal microchimerism: lessons learned from murine models. J Reprod Immunol 2015; 108:12-25. [DOI: 10.1016/j.jri.2014.12.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 12/04/2014] [Accepted: 12/14/2014] [Indexed: 11/20/2022]
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24
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Sani M, Hosseini SM, Salmannejad M, Aleahmad F, Ebrahimi S, Jahanshahi S, Talaei-Khozani T. Origins of the breast milk-derived cells; an endeavor to find the cell sources. Cell Biol Int 2015; 39:611-8. [PMID: 25572907 DOI: 10.1002/cbin.10432] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Accepted: 12/26/2014] [Indexed: 12/25/2022]
Abstract
Fresh human breast milk consists of a heterogeneous population of cells that may offer a non-invasive source of cells for therapeutic proposes. The aims of this study were to characterize the breast milk-derived cells cultured in vitro. To do this, the cells from human breast milk were cultured and the expression of the CD markers along with the embryonic stem cell markers, endothelial and luminal mammary epithelial cell markers was evaluated by flow cytometry and immunofluorescence. The presence of fetal microchimerism among the isolated cells was also determined by the presence of SRY gene. They were also differentiated into adipocytes and osteoblasts. The results showed that a remarkable number of cells expressed the mesenchymal stem cell (MSC) markers such as CD90, CD44, CD271, and CD146. A subpopulation of the human breast milk-derived cells (HBMDC) also expressed the embryonic stem cell markers, such as TRA 60-1, Oct4, Nanog and Sox2 but not SSEA1 or 4. The frequencies of the cells which expressed the endothelial, hematopoietic cell markers were negligible. SRY gene was not detected in the breast milk isolated cells. A subpopulation of the cells also expressed cytokeratin 18, the marker of luminal mammary epithelial cells. These cells showed the capability to differentiate into adipocytes and osteoblasts. In conclusion, these finding highlighted the presence of cells with various sources in the breast milk. Different stem cells including MSCs or embryonic stem cell-like cell along with the exfoliated cells from luminal epithelial cells were found among the isolated cells. The breast milk-derived stem cells might be considered as a non-invasive source of the stem cells for therapeutic purpose.
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Affiliation(s)
- Mahsa Sani
- Anatomy Department, Laboratory for stem cell research, Shiraz Medical School, Shiraz University of Medical Sciences, Shiraz, Iran; Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran; Cellular and Molecular Research Club, Shiraz University of Medical Sciences, Shiraz, Iran
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25
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Differentiation of human breast-milk stem cells to neural stem cells and neurons. Neurol Res Int 2014; 2014:807896. [PMID: 25506428 PMCID: PMC4260437 DOI: 10.1155/2014/807896] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Revised: 10/08/2014] [Accepted: 10/20/2014] [Indexed: 12/24/2022] Open
Abstract
Objectives. Human breast milk contains a heterogeneous population of cells that have the potential to provide a noninvasive source of cells for cell therapy in many neurodegenerative diseases without any ethical concern. The objectives of this study were to differentiate the breast milk-derived stem cells (BMDSC) toward neural stem cells and then into the neurons and neuroglia. Materials and Methods. To do this, the BMDSC were isolated from human breast milk and cultured in Dulbecco's modified Eagle medium/F12 (DMEM/F12) containing fibroblast growth factor (bFGF). The cells were then characterized by evaluation of the embryonic and stem cell markers. Then, the cells were exposed to culture medium containing 1% B27 and 2% N2 for 7–10 days followed by medium supplemented with B27, N2, bFGF 10 µg/mL, and endothelial growth factor (EGF) 20 µg/mL. Then, the sphere-forming assay was performed. The spheres were then differentiated into three neural lineages by withdrawing growth factor in the presence of 5% FBS (fetal bovine serum). The immunofluorescence was done for β-tubulin III, O4, and GFAP (glial fibrillary acidic protein). Results. The results indicated that the cells expressed both embryonic and mesenchymal stem cell (MSC) markers. They also showed neurospheres formation that was nestin-positive. The cells were also differentiated into all three neural lineages. Conclusion. The BMDSC can behave in the same way with neural stem cells. They were differentiated into oligodendrocytes, and astrocytes as well as neurons.
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26
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Hassiotou F, Hartmann PE. At the dawn of a new discovery: the potential of breast milk stem cells. Adv Nutr 2014; 5:770-8. [PMID: 25398739 PMCID: PMC4224213 DOI: 10.3945/an.114.006924] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Breast milk contains bioactive molecules that provide a multitude of immunologic, developmental and nutritional benefits to the infant. Less attention has been placed on the cellular nature of breast milk, which contains thousands to millions of maternal cells in every milliliter that the infant ingests. What are the properties and roles of these cells? Most studies have examined breast milk cells from an immunologic perspective, focusing specifically on the leukocytes, mainly in the early postpartum period. In the past decade, research has taken a multidimensional approach to investigating the cells of human milk. Technologic advances in single cell analysis and imaging have aided this work, which has resulted in the breakthrough discovery of stem cells in breast milk with multilineage potential that are transferred to the offspring during breastfeeding. This has generated numerous implications for both infant and maternal health and regenerative medicine. This review summarizes the latest knowledge on breast milk stem cells, and discusses their known in vitro and in vivo attributes as well as potential functions and applications.
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Affiliation(s)
- Foteini Hassiotou
- School of Chemistry and Biochemistry, Faculty of Science, The University of Western Australia, Crawley, Australia
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27
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Dutta P, Burlingham WJ. Correlation between post transplant maternal microchimerism and tolerance across MHC barriers in mice. CHIMERISM 2014. [DOI: 10.4161/chim.18083] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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28
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Dierselhuis MP, Jankowska-Gan E, Blokland E, Pool J, Burlingham WJ, van Halteren AGS, Goulmy E. HY immune tolerance is common in women without male offspring. PLoS One 2014; 9:e91274. [PMID: 24646895 PMCID: PMC3960116 DOI: 10.1371/journal.pone.0091274] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Accepted: 02/11/2014] [Indexed: 12/21/2022] Open
Abstract
Background Sex difference is an established risk factor for hematopoietic stem cell transplantation (HSCT)-related complications like graft versus host disease (GVHD). CD8pos cytotoxic T cells specific for Y chromosome-encoded minor Histocompatibility antigens (HY) play an important role therein. Prior to HSC donation, female donors may encounter HY antigens through fetomaternal or transmaternal cell flow, potentially leading to the induction of HY-specific cytotoxic or regulatory immune responses. Whether HY priming occurs independent of parity, and whether HY priming is dependent on the presence of male microchimerism, is as yet unknown. Methods We investigated the presence of HY-specific regulatory T cells (Treg) and male microchimerism in 45 healthy women with a fully documented pregnancy and family history. HY peptide-induced linked suppression, a commonly reported functional feature of CD4pos and CD8pos Treg, was measured by trans vivo Delayed Type Hypersensitivity testing. As source of HY antigens, male microchimerism was analyzed by real-time PCR and defined by the presence of male DNA in at least one purified leukocyte cell type. Results HLA class I or class II restricted HY-specific Treg were detected in 26/42 (62%) women eligible for analysis. The prevalence of HY-specific Treg was significantly higher in women who had never given birth to sons than in women with male offspring (p = 0.004). Male microchimerism could be detected in 24 out of 45 (53%) women but did not correlate with the presence of HY specific Treg. Conclusions HY-specific Treg in women with male offspring have been described previously. Here we show for the first time that, in fact, HY specific Treg are more common in nulliparous women and in parous women with female offspring. Their presence is independent of the presence of male microchimerism. Whether HY-specific Treg presence in female stem cell grafts might decrease the GVHD incidence in male HSCT recipients needs to be investigated.
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Affiliation(s)
- Miranda P Dierselhuis
- Dept. of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands
| | - Ewa Jankowska-Gan
- Dept. of Surgery, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Els Blokland
- Dept. of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands
| | - Jos Pool
- Dept. of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands
| | - William J Burlingham
- Dept. of Surgery, University of Wisconsin, Madison, Wisconsin, United States of America
| | - Astrid G S van Halteren
- Immunology Laboratory/Dept. of Pediatrics (WAKZ), Leiden University Medical Center, Leiden, The Netherlands
| | - Els Goulmy
- Dept. of Immunohematology and Blood Transfusion, Leiden University Medical Center, Leiden, The Netherlands
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Ye J, Vives-Pi M, Gillespie KM. Maternal microchimerism: increased in the insulin positive compartment of type 1 diabetes pancreas but not in infiltrating immune cells or replicating islet cells. PLoS One 2014; 9:e86985. [PMID: 24498006 PMCID: PMC3909047 DOI: 10.1371/journal.pone.0086985] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 12/19/2013] [Indexed: 01/01/2023] Open
Abstract
Background Maternal microchimeric cells (MMc) transfer across the placenta during pregnancy. Increased levels of MMc have been observed in several autoimmune diseases including type 1 diabetes but their role is unknown. It has been suggested that MMc are 1) effector cells of the immune response, 2) targets of the autoimmune response or 3) play a role in tissue repair. The aim of this study was to define the cellular phenotype of MMc in control (n = 14) and type 1 diabetes pancreas (n = 8). Methods Using sex chromosome-based fluorescence in-situ hybridization, MMc were identified in male pancreas and their phenotype determined by concomitant immunofluorescence. Results In normal pancreas, MMc positive for endocrine, exocrine, duct and acinar markers were identified suggesting that these cells are derived from maternal progenitors. Increased frequencies of MMc were observed in type 1 diabetes pancreas (p = 0.03) with particular enrichment in the insulin positive fraction (p = 0.01). MMc did not contribute to infiltrating immune cells or Ki67+ islet cell populations in type 1 diabetes. Conclusion These studies provide support for the hypothesis that MMc in human pancreas are derived from pancreatic precursors. Increased frequencies of MMc beta cells may contribute to the initiation of autoimmunity or to tissue repair but do not infiltrate islets in type 1 diabetes.
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MESH Headings
- Adolescent
- Adult
- Autoimmunity/genetics
- Autoimmunity/immunology
- Child
- Child, Preschool
- Chimerism
- Chromosomes, Human, X/genetics
- Chromosomes, Human, X/immunology
- Chromosomes, Human, Y/genetics
- Chromosomes, Human, Y/immunology
- Diabetes Mellitus, Type 1/genetics
- Diabetes Mellitus, Type 1/immunology
- Diabetes Mellitus, Type 1/metabolism
- Female
- GATA4 Transcription Factor/immunology
- GATA4 Transcription Factor/metabolism
- Humans
- In Situ Hybridization, Fluorescence/methods
- Infant
- Insulin/immunology
- Insulin/metabolism
- Islets of Langerhans/immunology
- Islets of Langerhans/metabolism
- Ki-67 Antigen/immunology
- Ki-67 Antigen/metabolism
- Male
- Maternal-Fetal Exchange/genetics
- Maternal-Fetal Exchange/immunology
- Microscopy, Confocal
- Microscopy, Fluorescence
- Pancreas/embryology
- Pancreas/immunology
- Pancreas/metabolism
- Pregnancy
- Young Adult
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Affiliation(s)
- Jody Ye
- Diabetes and Metabolism Unit, School of Clinical Sciences, University of Bristol, Bristol, United Kingdom
| | - Marta Vives-Pi
- Immunology Department, Institut de Recerca Germans Trias i Pujol, Carretera Canyet s/n, Badalona, Spain
| | - Kathleen M. Gillespie
- Diabetes and Metabolism Unit, School of Clinical Sciences, University of Bristol, Bristol, United Kingdom
- * E-mail:
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30
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Seppanen E, Fisk NM, Khosrotehrani K. Pregnancy-acquired fetal progenitor cells. J Reprod Immunol 2013; 97:27-35. [PMID: 23432869 DOI: 10.1016/j.jri.2012.08.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2012] [Revised: 08/23/2012] [Accepted: 08/23/2012] [Indexed: 12/11/2022]
Abstract
The transfer and persistence of fetal progenitor cells into the mother throughout pregnancy has sparked considerable interest as a trafficking stem cell and immunological phenomenon. Indeed, the intriguing longevity of semi-allogeneic fetal microchimeric cells (FMC) in parous women raises questions over their potential clinical implications. FMC have been associated with both immune-modulatory roles and participation in maternal tissue repair. Although their influence on maternal health is as yet unresolved, FMC selectively home to damaged maternal tissues and often integrate, adopting site-appropriate phenotypes. FMC features, such as plasticity and persistence in their maternal host, suggest that they likely include pluripotent, or various multipotent and committed stem and progenitor cells. Recent efforts to determine what cell types are involved have established that FMC include cells of ectodermal, endodermal, mesodermal, and perhaps trophectodermal lineages. This review details FMC phenotypes and discusses how FMC themselves may be considered a naturally occurring stem cell therapy.
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Affiliation(s)
- E Seppanen
- UQ Centre for Clinical Research, Herston Campus, University of Queensland, Brisbane, Qld. 4029, Australia
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Al-Adra DP, Anderson CC. Mixed chimerism and split tolerance: mechanisms and clinical correlations. CHIMERISM 2013; 2:89-101. [PMID: 22509425 DOI: 10.4161/chim.2.4.19017] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Establishing hematopoietic mixed chimerism can lead to donor-specific tolerance to transplanted organs and may eliminate the need for long-term immunosuppressive therapy, while also preventing chronic rejection. In this review, we discuss central and peripheral mechanisms of chimerism induced tolerance. However, even in the long-lasting presence of a donor organ or donor hematopoietic cells, some allogeneic tissues from the same donor can be rejected; a phenomenon known as split tolerance. With the current goal of creating mixed chimeras using clinically feasible amounts of donor bone marrow and with minimal conditioning, split tolerance may become more prevalent and its mechanisms need to be explored. Some predisposing factors that may increase the likelihood of split tolerance are immunogenicity of the graft, certain donor-recipient combinations, prior sensitization, location and type of graft and minimal conditioning chimerism induction protocols. Additionally, split tolerance may occur due to a differential susceptibility of various types of tissues to rejection. The mechanisms involved in a tissue's differential susceptibility to rejection include the presence of polymorphic tissue-specific antigens and variable sensitivity to indirect pathway effector mechanisms. Finally, we review the clinical attempts at allograft tolerance through the induction of chimerism; studies that are revealing the complex relationship between chimerism and tolerance. This relationship often displays split tolerance, and further research into its mechanisms is warranted.
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Affiliation(s)
- David P Al-Adra
- Department of Surgery, Alberta Diabetes Institute, University of Alberta, Edmonton, AB Canada
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Abstract
PURPOSE OF REVIEW The bidirectional exchange of cells, both mature and progenitor types, at the maternal-fetal interface is a common feature of mammalian reproduction. The presence of semiallogeneic cells in a host can have significant immunological effects on transplantation tolerance and rejection. Here, we review recent advances in this area. RECENT FINDINGS Maternal microchimerism (MMc) in blood and various organs was found to be directly correlated with noninherited maternal antigen (NIMA)-specific CD4(+) regulatory T cells (Tregs), in F(1) backcross mice. In humans, MMc induced NIMA-specific FoxP3(+) CD4 Tregs in lymph nodes and spleen of fetuses. Tolerance to NIMA(+) allografts could be predicted in mice by measuring levels of the NIMA-specific Tregs in offspring before transplantation. On the contrary, fetal microchimerism (FMc) in multiparous female mice was largely confined to CD34(+) hematopoietic stem cells (HSCs) and was associated with sensitization rather than Treg induction. The recent discovery of a 'layered' T-cell development in humans whereby fetal HSCs are more likely to produce Tregs than adult HSCs, which may explain why MMc often induces tolerance, whereas FMc tends to induce sensitization. SUMMARY Microchimerism may cause tolerance resulting in acceptance of an allograft bearing antigens shared by the microchimeric cells. However, microchimerism may also cause sensitization resulting in rejection. Distinguishing these effects prior to the transplant may revolutionize the field of living-related renal transplantation wherein MMc and FMc can exert a powerful influence on graft outcome.
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Dutta P, Burlingham WJ. Correlation between post transplant maternal microchimerism and tolerance across MHC barriers in mice. CHIMERISM 2011; 2:78-83. [PMID: 22163065 DOI: 10.4161/chim.2.3.18083] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Revised: 09/11/2011] [Accepted: 09/13/2011] [Indexed: 01/03/2023]
Abstract
UNLABELLED Exposure to non-inherited maternal antigens (NIMA) during fetal and neonatal life can result in lifelong maternal microchimerism (MMc) and tolerance to NIMA(+) allografts. We have previously shown that 40-50% of BDF1 female x B6 male offspring have multi-organ and multi-lineage MMc, while 70% have evidence of acquired maternal class I antigen in circulating PBMC and splenocytes. These features correlated with the presence of NIMA(d)-specific CD4(+) Treg cells, while offspring lacking MMc also lacked NIMA-specific Tregs. Furthermore, after a DBA/2 heart transplant, NIMA(d)-specific CD4(+) Treg cells rapidly mobilize to the allograft where they produce IL10 and TGFβ, suppressing early acute rejection, while mice deficient in MMc and NIMA(d)-specific Treg reject, allowing IFNγ-producing T effector cells to predominate in the grafts. We hypothesized that maternal cells occupy key sites of alloantigen presentation after transplant, sustaining pre-existing host Treg amidst a rising tide of donor alloantigen released from the graft. Using quantitative PCR to detect GFP transgeneic maternal cells, we found that transplant tolerance was associated with elevated MMc levels in blood, heart & lung, but surprisingly, not in liver. Rejection was associated with significantly lower levels of MMc in CD11b(+) (p = 0.0001) and CD11c(+) (p = 0.045) splenocytes, but not with differences in T cell MMc. Furthermore, compared with low pre-transplant baseline rate of maternal antigen acquisition, long-term graft survival was associated with an increased mean % of cells in blood [0.5% pre vs. 5.0% post] and spleen that were dimly positive for H-2K(d), indicative of de novo cell-surface alloantigen acquisition from the DBA/2 donor heart allograft. In contrast, NIMA-exposed mice that rejected their DBA/2 graft showed a transient increase in H-2K(d-dim) cells in blood during rejection (day 9-12) but a complete absence of donor MHC acquisition 100 days after transplant. As was the case prior to transplant, antigen acquisition was largely confined to MHC class II+ professional APC. CONCLUSION When a NIMA-expressing organ allograft is accepted, MMc persists, mainly distributed into the antigen-presenting cell compartment, where the bulk of graft-derived alloantigen for "semi-direct" presentation is also present.
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Affiliation(s)
- Partha Dutta
- Department of Surgery; School of Medicine and Public Health; University of Wisconsin; Madison, WI USA
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Dutta P, Dart M, Roenneburg DA, Torrealba JR, Burlingham WJ. Pretransplant immune-regulation predicts allograft tolerance. Am J Transplant 2011; 11:1296-301. [PMID: 21449933 PMCID: PMC3110527 DOI: 10.1111/j.1600-6143.2011.03484.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
CD4⁺ Tregs specific for noninherited maternal antigens (NIMA(d) ) are detectable in some but not all B6 × BDF₁ backcross, H-2(b) homozygous offspring, and their presence is strongly correlated with extent of maternal (BDF₁) microchimerism. We hypothesized that the level of pretransplant donor antigen-specific Tregs could predict allograft tolerance. To test this idea, mice were screened for bystander suppression in a DTH assay, followed 1 week later by DBA/2 heterotopic heart transplantation. NIMA(d) -exposed, H-2(b) offspring that failed to suppress DTH uniformly rejected heart allografts (12/12) by d15. In contrast, 5/6 NIMA(d) -exposed DTH 'regulators' accepted their allografts >100 days. The defect in 'nonregulator" offspring could be corrected by transfer of CD4⁺CD25⁺, but not CD4⁺ CD25(neg) or CD8⁺ T cells from transplant acceptor mice. In conclusion, donor-specific T reg screening of F1 backcross offspring correctly predicted which recipients would accept a heart allograft. If translated to the clinic, similar pretransplant Treg screening could greatly enhance the effectiveness of tolerance as a clinical strategy in transplantation between family members.
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Affiliation(s)
- P Dutta
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53792, USA
- Center for Systems Biology, Massachusetts General Hospital, Harvard Medical School, MA, USA
| | - M Dart
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53792, USA
| | - DA Roenneburg
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53792, USA
| | - JR Torrealba
- Department of Pathology, University of Wisconsin, Madison, WI, USA
| | - WJ Burlingham
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin, Madison, WI 53792, USA
- Corresponding Author: Dr. William J. Burlingham, H4/749 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792, USA, Telephone number: 001-608-263-0119, Fax number: 001-608-263-7652,
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