1
|
Yvernogeau L, Dainese G, Jaffredo T. Dorsal aorta polarization and haematopoietic stem cell emergence. Development 2023; 150:286251. [PMID: 36602140 DOI: 10.1242/dev.201173] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Recent studies have highlighted the crucial role of the aorta microenvironment in the generation of the first haematopoietic stem cells (HSCs) from specialized haemogenic endothelial cells (HECs). Despite more than two decades of investigations, we require a better understanding of the cellular and molecular events driving aorta formation and polarization, which will be pivotal to establish the mechanisms that operate during HEC specification and HSC competency. Here, we outline the early mechanisms involved in vertebrate aorta formation by comparing four different species: zebrafish, chicken, mouse and human. We highlight how this process, which is tightly controlled in time and space, requires a coordinated specification of several cell types, in particular endothelial cells originating from distinct mesodermal tissues. We also discuss how molecular signals originating from the aorta environment result in its polarization, creating a unique entity for HSC generation.
Collapse
Affiliation(s)
- Laurent Yvernogeau
- Sorbonne Université, IBPS, CNRS UMR7622, Inserm U1156, Laboratoire de Biologie du Développement, 75005 Paris, France
| | - Giovanna Dainese
- Sorbonne Université, IBPS, CNRS UMR7622, Inserm U1156, Laboratoire de Biologie du Développement, 75005 Paris, France
| | - Thierry Jaffredo
- Sorbonne Université, IBPS, CNRS UMR7622, Inserm U1156, Laboratoire de Biologie du Développement, 75005 Paris, France
| |
Collapse
|
2
|
Zmrhal V, Svoradova A, Batik A, Slama P. Three-Dimensional Avian Hematopoietic Stem Cell Cultures as a Model for Studying Disease Pathogenesis. Front Cell Dev Biol 2022; 9:730804. [PMID: 35127695 PMCID: PMC8811169 DOI: 10.3389/fcell.2021.730804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 12/17/2021] [Indexed: 11/16/2022] Open
Abstract
Three-dimensional (3D) cell culture is attracting increasing attention today because it can mimic tissue environments and provide more realistic results than do conventional cell cultures. On the other hand, very little attention has been given to using 3D cell cultures in the field of avian cell biology. Although mimicking the bone marrow niche is a classic challenge of mammalian stem cell research, experiments have never been conducted in poultry on preparing in vitro the bone marrow niche. It is well known, however, that all diseases cause immunosuppression and target immune cells and their development. Hematopoietic stem cells (HSC) reside in the bone marrow and constitute a source for immune cells of lymphoid and myeloid origins. Disease prevention and control in poultry are facing new challenges, such as greater use of alternative breeding systems and expanding production of eggs and chicken meat in developing countries. Moreover, the COVID-19 pandemic will draw greater attention to the importance of disease management in poultry because poultry constitutes a rich source of zoonotic diseases. For these reasons, and because they will lead to a better understanding of disease pathogenesis, in vivo HSC niches for studying disease pathogenesis can be valuable tools for developing more effective disease prevention, diagnosis, and control. The main goal of this review is to summarize knowledge about avian hematopoietic cells, HSC niches, avian immunosuppressive diseases, and isolation of HSC, and the main part of the review is dedicated to using 3D cell cultures and their possible use for studying disease pathogenesis with practical examples. Therefore, this review can serve as a practical guide to support further preparation of 3D avian HSC niches to study the pathogenesis of avian diseases.
Collapse
Affiliation(s)
- Vladimir Zmrhal
- Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic
| | - Andrea Svoradova
- Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic
- NPPC, Research Institute for Animal Production in Nitra, Luzianky, Slovak Republic
| | - Andrej Batik
- Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic
| | - Petr Slama
- Department of Animal Morphology, Physiology and Genetics, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic
| |
Collapse
|
3
|
Weijts B, Yvernogeau L, Robin C. Recent Advances in Developmental Hematopoiesis: Diving Deeper With New Technologies. Front Immunol 2021; 12:790379. [PMID: 34899758 PMCID: PMC8652083 DOI: 10.3389/fimmu.2021.790379] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Accepted: 10/28/2021] [Indexed: 12/15/2022] Open
Abstract
The journey of a hematopoietic stem cell (HSC) involves the passage through successive anatomical sites where HSCs are in direct contact with their surrounding microenvironment, also known as niche. These spatial and temporal cellular interactions throughout development are required for the acquisition of stem cell properties, and for maintaining the HSC pool through balancing self-renewal, quiescence and lineage commitment. Understanding the context and consequences of these interactions will be imperative for our understanding of HSC biology and will lead to the improvement of in vitro production of HSCs for clinical purposes. The aorta-gonad-mesonephros (AGM) region is in this light of particular interest since this is the cradle of HSC emergence during the embryonic development of all vertebrate species. In this review, we will focus on the developmental origin of HSCs and will discuss the novel technological approaches and recent progress made to identify the cellular composition of the HSC supportive niche and the underlying molecular events occurring in the AGM region.
Collapse
Affiliation(s)
- Bart Weijts
- Hubrecht Institute-KNAW (Royal Netherlands Academy of Arts and Sciences) & University Medical Center Utrecht, Utrecht, Netherlands
| | - Laurent Yvernogeau
- Hubrecht Institute-KNAW (Royal Netherlands Academy of Arts and Sciences) & University Medical Center Utrecht, Utrecht, Netherlands
| | - Catherine Robin
- Hubrecht Institute-KNAW (Royal Netherlands Academy of Arts and Sciences) & University Medical Center Utrecht, Utrecht, Netherlands
- Regenerative Medicine Center, University Medical Center Utrecht, Utrecht, Netherlands
| |
Collapse
|
4
|
Garcia P, Wang Y, Viallet J, Macek Jilkova Z. The Chicken Embryo Model: A Novel and Relevant Model for Immune-Based Studies. Front Immunol 2021; 12:791081. [PMID: 34868080 PMCID: PMC8640176 DOI: 10.3389/fimmu.2021.791081] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 11/02/2021] [Indexed: 12/18/2022] Open
Abstract
Dysregulation of the immune system is associated with many pathologies, including cardiovascular diseases, diabetes, and cancer. To date, the most commonly used models in biomedical research are rodents, and despite the various advantages they offer, their use also raises numerous drawbacks. Recently, another in vivo model, the chicken embryo and its chorioallantoic membrane, has re-emerged for various applications. This model has many benefits compared to other classical models, as it is cost-effective, time-efficient, and easier to use. In this review, we explain how the chicken embryo can be used as a model for immune-based studies, as it gradually develops an embryonic immune system, yet which is functionally similar to humans'. We mainly aim to describe the avian immune system, highlighting the differences and similarities with the human immune system, including the repertoire of lymphoid tissues, immune cells, and other key features. We also describe the general in ovo immune ontogeny. In conclusion, we expect that this review will help future studies better tailor their use of the chicken embryo model for testing specific experimental hypotheses or performing preclinical testing.
Collapse
Affiliation(s)
- Paul Garcia
- Université Grenoble Alpes, Grenoble, France
- R&D Department, Inovotion, La Tronche, France
- Institute for Advanced Biosciences, Research Center Université Grenoble Alpes (UGA)/Inserm U 1209/CNRS 5309, La Tronche, France
| | - Yan Wang
- R&D Department, Inovotion, La Tronche, France
| | | | - Zuzana Macek Jilkova
- Université Grenoble Alpes, Grenoble, France
- Institute for Advanced Biosciences, Research Center Université Grenoble Alpes (UGA)/Inserm U 1209/CNRS 5309, La Tronche, France
- Service d’Hépato-Gastroentérologie, Pôle Digidune, Centre Hospitalo-Universitaire (USA) Grenoble Alpes, La Tronche, France
| |
Collapse
|
5
|
Multispecies RNA tomography reveals regulators of hematopoietic stem cell birth in the embryonic aorta. Blood 2021; 136:831-844. [PMID: 32457985 DOI: 10.1182/blood.2019004446] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 04/26/2020] [Indexed: 12/12/2022] Open
Abstract
The defined location of a stem cell within a niche regulates its fate, behavior, and molecular identity via a complex extrinsic regulation that is far from being fully elucidated. To explore the molecular characteristics and key components of the aortic microenvironment, where the first hematopoietic stem cells are generated during development, we performed genome-wide RNA tomography sequencing on zebrafish, chicken, mouse, and human embryos. The resulting anterior-posterior and dorsal-ventral transcriptional maps provided a powerful resource for exploring genes and regulatory pathways active in the aortic microenvironment. By performing interspecies comparative RNA sequencing analyses and functional assays, we explored the complexity of the aortic microenvironment landscape and the fine-tuning of various factors interacting to control hematopoietic stem cell generation, both in time and space in vivo, including the ligand-receptor couple ADM-RAMP2 and SVEP1. Understanding the regulatory function of the local environment will pave the way for improved stem cell production in vitro and clinical cell therapy.
Collapse
|
6
|
Wong EA, Uni Z. Centennial Review: The chicken yolk sac is a multifunctional organ. Poult Sci 2021; 100:100821. [PMID: 33518342 PMCID: PMC7936120 DOI: 10.1016/j.psj.2020.11.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 11/04/2020] [Accepted: 11/08/2020] [Indexed: 11/26/2022] Open
Abstract
The yolk sac (YS) consists of the yolk, which supplies nutrients, and the YS tissue, which surrounds the yolk and provides essential metabolic functions for the developing embryo. The YS tissue is derived from the midgut of the embryo and consists of a layer of endodermal epithelial cells (EEC) in contact with the yolk contents, a mesodermal layer that contains the vascular system and an outer ectodermal layer. The YS tissue is a multifunctional organ that provides essential functions such as host immunity, nutrient uptake, carbohydrate and lipid metabolism, and erythropoiesis. The YS tissue plays a role in immunity by the transport of maternal antibodies in the yolk to the embryonic circulation that feeds the developing embryo. In addition, the YS tissue expresses high mRNA levels of the host defense peptide, avian β-defensin 10 during mid embryogenesis. Owing to its origin, the YS EEC share some functional properties with intestinal epithelial cells such as expression of transporters for amino acids, peptides, monosaccharides, fatty acids, and minerals. The YS tissue stores glycogen and expresses enzymes for glycogen synthesis and breakdown and glucogenesis. This carbohydrate metabolism may play an important role in the hatching process. The mesodermal layer of the YS tissue is the site for erythropoiesis and provides erythrocytes before the maturation of the bone marrow. Other functions of the YS tissue involve synthesis of plasma proteins, lipid transport and cholesterol metabolism, and synthesis of thyroxine. Thus, the YS is an essential organ for the growth, development, and health of the developing embryo. This review will provide an overview of the studies that have investigated the functionalities of the YS tissue at the cellular and molecular levels with a focus on chickens.
Collapse
Affiliation(s)
- E A Wong
- Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061.
| | - Z Uni
- Department of Animal Sciences, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| |
Collapse
|
7
|
Seco P, Martins GG, Jacinto A, Tavares AT. A Bird's Eye View on the Origin of Aortic Hemogenic Endothelial Cells. Front Cell Dev Biol 2020; 8:605274. [PMID: 33330505 PMCID: PMC7717972 DOI: 10.3389/fcell.2020.605274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 10/28/2020] [Indexed: 11/13/2022] Open
Abstract
During early embryogenesis, the hemogenic endothelium of the developing dorsal aorta is the main source of definitive hematopoietic stem cells (HSCs), which will generate all blood cell lineages of the adult organism. The hemogenic endothelial cells (HECs) of the dorsal aorta are known to arise from the splanchnic lateral plate mesoderm. However, the specific cell lineages and developmental paths that give rise to aortic HECs are still unclear. Over the past half a century, the scientific debate on the origin of aortic HECs and HSCs has largely focused on two potential and apparently alternative birthplaces, the extraembryonic yolk sac blood islands and the intraembryonic splanchnic mesoderm. However, as we argue, both yolk sac blood islands and aortic HECs may have a common hemangioblastic origin. Further insight into aortic HEC development is being gained from fate-mapping studies that address the identity of progenitor cell lineages, rather than their physical location within the developing embryo. In this perspective article, we discuss the current knowledge on the origin of aortic HECs with a particular focus on the evidence provided by studies in the avian embryo, a model that pioneered the field of developmental hematopoiesis.
Collapse
Affiliation(s)
- Pedro Seco
- iNOVA4Health, CEDOC, NOVA Medical School, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Gabriel G Martins
- Instituto Gulbenkian de Ciência, Oeiras, Portugal.,Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal
| | - António Jacinto
- iNOVA4Health, CEDOC, NOVA Medical School, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Ana Teresa Tavares
- iNOVA4Health, CEDOC, NOVA Medical School, Universidade Nova de Lisboa, Lisbon, Portugal
| |
Collapse
|
8
|
Elsaid R, Soares-da-Silva F, Peixoto M, Amiri D, Mackowski N, Pereira P, Bandeira A, Cumano A. Hematopoiesis: A Layered Organization Across Chordate Species. Front Cell Dev Biol 2020; 8:606642. [PMID: 33392196 PMCID: PMC7772317 DOI: 10.3389/fcell.2020.606642] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 11/19/2020] [Indexed: 12/12/2022] Open
Abstract
The identification of distinct waves of progenitors during development, each corresponding to a specific time, space, and function, provided the basis for the concept of a "layered" organization in development. The concept of a layered hematopoiesis was established by classical embryology studies in birds and amphibians. Recent progress in generating reliable lineage tracing models together with transcriptional and proteomic analyses in single cells revealed that, also in mammals, the hematopoietic system evolves in successive waves of progenitors with distinct properties and fate. During embryogenesis, sequential waves of hematopoietic progenitors emerge at different anatomic sites, generating specific cell types with distinct functions and tissue homing capacities. The first progenitors originate in the yolk sac before the emergence of hematopoietic stem cells, some giving rise to progenies that persist throughout life. Hematopoietic stem cell-derived cells that protect organisms against environmental pathogens follow the same sequential strategy, with subsets of lymphoid cells being only produced during embryonic development. Growing evidence indicates that fetal immune cells contribute to the proper development of the organs they seed and later ensure life-long tissue homeostasis and immune protection. They include macrophages, mast cells, some γδ T cells, B-1 B cells, and innate lymphoid cells, which have "non-redundant" functions, and early perturbations in their development or function affect immunity in the adult. These observations challenged the view that all hematopoietic cells found in the adult result from constant and monotonous production from bone marrow-resident hematopoietic stem cells. In this review, we evaluate evidence for a layered hematopoietic system across species. We discuss mechanisms and selective pressures leading to the temporal generation of different cell types. We elaborate on the consequences of disturbing fetal immune cells on tissue homeostasis and immune development later in life.
Collapse
Affiliation(s)
- Ramy Elsaid
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France
- INSERM U1223, Paris, France
- Université de Paris, Céllule Pasteur, Paris, France
| | - Francisca Soares-da-Silva
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France
- INSERM U1223, Paris, France
- Université de Paris, Céllule Pasteur, Paris, France
- I3S—Instituto de Investigação e Inovação em Saúde and INEB—Instituto Nacional de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
- Graduate Program in Areas of Basic and Applied Biology, Instituto de Ciências Biomeìdicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Marcia Peixoto
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France
- INSERM U1223, Paris, France
- Université de Paris, Céllule Pasteur, Paris, France
- I3S—Instituto de Investigação e Inovação em Saúde and INEB—Instituto Nacional de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
- Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Dali Amiri
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France
- INSERM U1223, Paris, France
- Université de Paris, Céllule Pasteur, Paris, France
| | - Nathan Mackowski
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France
- INSERM U1223, Paris, France
- Université de Paris, Céllule Pasteur, Paris, France
| | - Pablo Pereira
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France
- INSERM U1223, Paris, France
- Université de Paris, Céllule Pasteur, Paris, France
| | - Antonio Bandeira
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France
- INSERM U1223, Paris, France
- Université de Paris, Céllule Pasteur, Paris, France
| | - Ana Cumano
- Unit of Lymphocytes and Immunity, Immunology Department, Institut Pasteur, Paris, France
- INSERM U1223, Paris, France
- Université de Paris, Céllule Pasteur, Paris, France
| |
Collapse
|
9
|
Mahony CB, Bertrand JY. How HSCs Colonize and Expand in the Fetal Niche of the Vertebrate Embryo: An Evolutionary Perspective. Front Cell Dev Biol 2019; 7:34. [PMID: 30915333 PMCID: PMC6422921 DOI: 10.3389/fcell.2019.00034] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 02/25/2019] [Indexed: 12/18/2022] Open
Abstract
Rare hematopoietic stem cells (HSCs) can self-renew, establish the entire blood system and represent the basis of regenerative medicine applied to hematological disorders. Clinical use of HSCs is however limited by their inefficient expansion ex vivo, creating a need to further understand HSC expansion in vivo. After embryonic HSCs are born from the hemogenic endothelium, they migrate to the embryonic/fetal niche, where the future adult HSC pool is established by considerable expansion. This takes place at different anatomical sites and is controlled by numerous signals. HSCs then migrate to their adult niche, where they are maintained throughout adulthood. Exactly how HSC expansion is controlled during embryogenesis remains to be characterized and is an important step to improve the therapeutic use of HSCs. We will review the current knowledge of HSC expansion in the different fetal niches across several model organisms and highlight possible clinical applications.
Collapse
Affiliation(s)
- Christopher B Mahony
- Department of Pathology and Immunology, Faculty of Medicine, CMU, University of Geneva, Geneva, Switzerland
| | - Julien Y Bertrand
- Department of Pathology and Immunology, Faculty of Medicine, CMU, University of Geneva, Geneva, Switzerland
| |
Collapse
|
10
|
Murine hematopoietic stem cell activity is derived from pre-circulation embryos but not yolk sacs. Nat Commun 2018; 9:5405. [PMID: 30573729 PMCID: PMC6302089 DOI: 10.1038/s41467-018-07769-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 11/23/2018] [Indexed: 11/08/2022] Open
Abstract
The embryonic site of definitive hematopoietic stem cell (dHSC) origination has been debated for decades. Although an intra-embryonic origin is well supported, the yolk sac (YS) contribution to adult hematopoiesis remains controversial. The same developmental origin makes it difficult to identify specific markers that discern between an intraembryonic versus YS-origin using a lineage trace approach. Additionally, the highly migratory nature of blood cells and the inability of pre-circulatory embryonic cells (i.e., 5-7 somite pairs (sp)) to robustly engraft in transplantation, even after culture, has precluded scientists from properly answering these questions. Here we report robust, multi-lineage and serially transplantable dHSC activity from cultured 2-7sp murine embryonic explants (Em-Ex). dHSC are undetectable in 2-7sp YS explants. Additionally, the engraftment from Em-Ex is confined to an emerging CD31+CD45+c-Kit+CD41- population. In sum, our work supports a model in which the embryo, not the YS, is the major source of lifelong definitive hematopoiesis.
Collapse
|
11
|
Transserosal migration of enteric neural stem cells: Developing an avian colon model. J Pediatr Surg 2018; 53:2435-2439. [PMID: 30243737 DOI: 10.1016/j.jpedsurg.2018.08.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 08/25/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND Stem cell transplantation is a potential therapy for enteric neuropathies, including Hirschsprung disease. Proof-of-principle has been obtained using focal transplants into neonatal mouse colon. The challenge now is to deliver stem cells to a large surface area to reconstruct an enteric nerve plexus. One proposed method is serosal application using a polymer membrane. However, transserosal migration of stem cells has not been demonstrated in mature colon. This study aimed to develop an avian model to demonstrate stem cell migration across the intact serosa of mature colon. METHODS Hindguts were obtained from E14 quail embryos, transplanted onto E8 chicken chorioallantoic membranes and harvested after 2 and 8 days. Tissues were assessed immunohistologically for apoptosis (caspase-3), maturity (α-SMA), preservation of mucosa (E-cadherin), and preservation of serosa (cytokeratin). RESULTS Transient necrosis of the central mucosa was observed over the first two days, followed by recovery. Twenty-three grafts were assessed immunohistologically at day 8. Nineteen grafts demonstrated progressive maturation and an intact mucosa. Circumferential serosal preservation was observed in 9 grafts. No apoptosis was seen. CONCLUSION Avian colon may be successfully harvested with an intact serosa. Large chorioallantoic membrane grafts remain viable for at least 8 days, and the serosa can be preserved throughout. This provides an economical platform for assessing transserosal migration of stem cells in mature colon.
Collapse
|
12
|
Pawlak K, Nieckarz Z, Sechman A, Wojtysiak D, Bojarski B, Tombarkiewicz B. Effect of a 1800 MHz electromagnetic field emitted during embryogenesis on chick development and hatchability. Anat Histol Embryol 2018; 47:222-230. [DOI: 10.1111/ahe.12346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 01/29/2018] [Indexed: 11/30/2022]
Affiliation(s)
- K. Pawlak
- Department of Veterinary Science, Animal Reproduction and Animal Welfare; Institute of Veterinary Sciences; University of Agriculture in Kraków; Kraków Poland
| | - Z. Nieckarz
- Experimental Computer Physics Department; Institute of Physics; Jagiellonian University in Kraków; Kraków Poland
| | - A. Sechman
- Department of Animal Physiology and Endocrinology; University of Agriculture in Kraków; Kraków Poland
| | - D. Wojtysiak
- Department of Animal Anatomy; Institute of Veterinary Sciences; University of Agriculture in Kraków; Kraków Poland
| | - B. Bojarski
- Department of Veterinary Science, Animal Reproduction and Animal Welfare; Institute of Veterinary Sciences; University of Agriculture in Kraków; Kraków Poland
| | - B. Tombarkiewicz
- Department of Veterinary Science, Animal Reproduction and Animal Welfare; Institute of Veterinary Sciences; University of Agriculture in Kraków; Kraków Poland
| |
Collapse
|
13
|
McGarvey AC, Rybtsov S, Souilhol C, Tamagno S, Rice R, Hills D, Godwin D, Rice D, Tomlinson SR, Medvinsky A. A molecular roadmap of the AGM region reveals BMPER as a novel regulator of HSC maturation. J Exp Med 2017; 214:3731-3751. [PMID: 29093060 PMCID: PMC5716029 DOI: 10.1084/jem.20162012] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 06/16/2017] [Accepted: 09/01/2017] [Indexed: 12/16/2022] Open
Abstract
Through transcriptional profiling of the mouse AGM region, McGarvey et al. identify potential niche regulators of HSC development. They show a new function of BMPER in regulating HSC maturation, likely via its modulation of BMP signalling. In the developing embryo, hematopoietic stem cells (HSCs) emerge from the aorta-gonad-mesonephros (AGM) region, but the molecular regulation of this process is poorly understood. Recently, the progression from E9.5 to E10.5 and polarity along the dorso-ventral axis have been identified as clear demarcations of the supportive HSC niche. To identify novel secreted regulators of HSC maturation, we performed RNA sequencing over these spatiotemporal transitions in the AGM region and supportive OP9 cell line. Screening several proteins through an ex vivo reaggregate culture system, we identify BMPER as a novel positive regulator of HSC development. We demonstrate that BMPER is associated with BMP signaling inhibition, but is transcriptionally induced by BMP4, suggesting that BMPER contributes to the precise control of BMP activity within the AGM region, enabling the maturation of HSCs within a BMP-negative environment. These findings and the availability of our transcriptional data through an accessible interface should provide insight into the maintenance and potential derivation of HSCs in culture.
Collapse
Affiliation(s)
- Alison C McGarvey
- Stem Cell Bioinformatics Group, Institute for Stem Cell Research, Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, Scotland, UK
| | - Stanislav Rybtsov
- Ontogeny of Haematopoietic Stem Cells Group, Institute for Stem Cell Research, Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, Scotland, UK
| | - Céline Souilhol
- Ontogeny of Haematopoietic Stem Cells Group, Institute for Stem Cell Research, Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, Scotland, UK
| | - Sara Tamagno
- Ontogeny of Haematopoietic Stem Cells Group, Institute for Stem Cell Research, Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, Scotland, UK
| | - Ritva Rice
- University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - David Hills
- Ontogeny of Haematopoietic Stem Cells Group, Institute for Stem Cell Research, Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, Scotland, UK
| | - Duncan Godwin
- Stem Cell Bioinformatics Group, Institute for Stem Cell Research, Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, Scotland, UK
| | - David Rice
- University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Simon R Tomlinson
- Stem Cell Bioinformatics Group, Institute for Stem Cell Research, Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, Scotland, UK
| | - Alexander Medvinsky
- Ontogeny of Haematopoietic Stem Cells Group, Institute for Stem Cell Research, Medical Research Council Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, Scotland, UK
| |
Collapse
|