1
|
Hou S, Guo X, Du J, Ding X, Ning X, Wang H, Chen H, Liu B, Lan Y. New insights into the endothelial origin of hematopoietic system inspired by "TIF" approaches. BLOOD SCIENCE 2024; 6:e00199. [PMID: 39027902 PMCID: PMC11254119 DOI: 10.1097/bs9.0000000000000199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 05/07/2024] [Indexed: 07/20/2024] Open
Abstract
Hematopoietic stem progenitor cells (HSPCs) are derived from a specialized subset of endothelial cells named hemogenic endothelial cells (HECs) via a process of endothelial-to-hematopoietic transition during embryogenesis. Recently, with the usage of multiple single-cell technologies and advanced genetic lineage tracing techniques, namely, "TIF" approaches that combining transcriptome, immunophenotype and function/fate analyses, massive new insights have been achieved regarding the cellular and molecular evolution underlying the emergence of HSPCs from embryonic vascular beds. In this review, we focus on the most recent advances in the enrichment markers, functional characteristics, developmental paths, molecular controls, and the embryonic site-relevance of the key intermediate cell populations bridging embryonic vascular and hematopoietic systems, namely HECs and pre-hematopoietic stem cells, the immediate progenies of some HECs, in mouse and human embryos. Specifically, using expression analyses at both transcriptional and protein levels and especially efficient functional assays, we propose that the onset of Kit expression is at the HEC stage, which has previously been controversial.
Collapse
Affiliation(s)
- Siyuan Hou
- Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xia Guo
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Junjie Du
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
- Chinese PLA Medical School, Chinese PLA General Hospital, Beijing, China
| | - Xiaochen Ding
- Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xiaowei Ning
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Haizhen Wang
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Haifeng Chen
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Bing Liu
- Medical Innovation Research Division, Chinese PLA General Hospital, Beijing, China
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Yu Lan
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| |
Collapse
|
2
|
Akins KA, Flinn MA, Swift SK, Chanjeevaram SV, Purdy AL, Buddell T, Kolell ME, Andresen KG, Paddock S, Buday SL, Veldman MB, O'Meara CC, Patterson M. Runx1 is sufficient but not required for cardiomyocyte cell-cycle activation. Am J Physiol Heart Circ Physiol 2024; 327:H377-H389. [PMID: 38847758 DOI: 10.1152/ajpheart.00782.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 05/08/2024] [Accepted: 05/30/2024] [Indexed: 07/23/2024]
Abstract
Factors responsible for cardiomyocyte proliferation could serve as potential therapeutics to stimulate endogenous myocardial regeneration following insult, such as ischemic injury. A previously published forward genetics approach on cardiomyocyte cell cycle and ploidy led us to the transcription factor, Runx1. Here, we examine the effect of Runx1 on cardiomyocyte cell cycle during postnatal development and cardiac regeneration using cardiomyocyte-specific gain- and loss-of-function mouse models. RUNX1 is expressed in cardiomyocytes during early postnatal life, decreases to negligible levels by 3 wk of age, and increases upon myocardial injury, all consistent with observed rates of cardiomyocyte cell-cycle activity. Loss of Runx1 transiently stymied cardiomyocyte cell-cycle activity during normal postnatal development, a result that corrected itself and did not extend to the context of neonatal heart regeneration. On the other hand, cardiomyocyte-specific Runx1 overexpression resulted in an expansion of diploid cardiomyocytes in uninjured hearts and expansion of 4 N cardiomyocytes in the context of neonatal cardiac injury, suggesting Runx1 overexpression is sufficient to induce cardiomyocyte cell-cycle responses. Persistent overexpression of Runx1 for >1 mo continued to promote cardiomyocyte cell-cycle activity resulting in substantial hyperpolyploidization (≥8 N DNA content). This persistent cell-cycle activation was accompanied by ventricular dilation and adverse remodeling, raising the concern that continued cardiomyocyte cell cycling can have detrimental effects.NEW & NOTEWORTHY Runx1 is sufficient but not required for cardiomyocyte cell cycle.
Collapse
Grants
- R01HL155085 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
- R01HL155085-S1 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
- F31HL162468 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
- F32HL150958 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
- R01HL141159 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
- R01HL170547 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
- T32HL034643 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
- T32HL007852 HHS | NIH | National Heart, Lung, and Blood Institute (NHLBI)
- S10OD025038 HHS | NIH | NIH Office of the Director (OD)
Collapse
Affiliation(s)
- Kaelin A Akins
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Michael A Flinn
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Samantha K Swift
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Smrithi V Chanjeevaram
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Alexandra L Purdy
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Tyler Buddell
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Mary E Kolell
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Kaitlyn G Andresen
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Samantha Paddock
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Sydney L Buday
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Matthew B Veldman
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Caitlin C O'Meara
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| | - Michaela Patterson
- Department of Cell Biology, Neurobiology, and Anatomy, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin, United States
| |
Collapse
|
3
|
Chang Y, Hummel SN, Jung J, Jin G, Deng Q, Bao X. Engineered hematopoietic and immune cells derived from human pluripotent stem cells. Exp Hematol 2023; 127:14-27. [PMID: 37611730 PMCID: PMC10615717 DOI: 10.1016/j.exphem.2023.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 08/09/2023] [Accepted: 08/17/2023] [Indexed: 08/25/2023]
Abstract
For the past decade, significant advances have been achieved in human hematopoietic stem cell (HSC) transplantation for treating various blood diseases and cancers. However, challenges remain with the quality control, amount, and cost of HSCs and HSC-derived immune cells. The advent of human pluripotent stem cells (hPSCs) may transform HSC transplantation and cancer immunotherapy by providing a cost-effective and scalable cell source for fundamental studies and translational applications. In this review, we discuss the current developments in the field of stem cell engineering for hematopoietic stem and progenitor cell (HSPC) differentiation and further differentiation of HSPCs into functional immune cells. The key advances in stem cell engineering include the generation of HSPCs from hPSCs, genetic modification of hPSCs, and hPSC-derived HSPCs for improved function, further differentiation of HPSCs into functional immune cells, and applications of cell culture platforms for hematopoietic cell manufacturing. Current challenges impeding the translation of hPSC-HSPCs and immune cells as well as further directions to address these challenges are also discussed.
Collapse
Affiliation(s)
- Yun Chang
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana; Purdue University Institute for Cancer Research, West Lafayette, Indiana
| | - Sydney N Hummel
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana; Purdue University Institute for Cancer Research, West Lafayette, Indiana
| | - Juhyung Jung
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana; Purdue University Institute for Cancer Research, West Lafayette, Indiana
| | - Gyuhyung Jin
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana; Purdue University Institute for Cancer Research, West Lafayette, Indiana
| | - Qing Deng
- Purdue University Institute for Cancer Research, West Lafayette, Indiana; Department of Biological Sciences, Purdue University, West Lafayette, Indiana
| | - Xiaoping Bao
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana; Purdue University Institute for Cancer Research, West Lafayette, Indiana.
| |
Collapse
|
4
|
Liu N, Kawahira N, Nakashima Y, Nakano H, Iwase A, Uchijima Y, Wang M, Wu SM, Minamisawa S, Kurihara H, Nakano A. Notch and retinoic acid signals regulate macrophage formation from endocardium downstream of Nkx2-5. Nat Commun 2023; 14:5398. [PMID: 37669937 PMCID: PMC10480477 DOI: 10.1038/s41467-023-41039-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 08/15/2023] [Indexed: 09/07/2023] Open
Abstract
Hematopoietic progenitors are enriched in the endocardial cushion and contribute, in a Nkx2-5-dependent manner, to tissue macrophages required for the remodeling of cardiac valves and septa. However, little is known about the molecular mechanism of endocardial-hematopoietic transition. In the current study, we identified the regulatory network of endocardial hematopoiesis. Signal network analysis from scRNA-seq datasets revealed that genes in Notch and retinoic acid (RA) signaling are significantly downregulated in Nkx2-5-null endocardial cells. In vivo and ex vivo analyses validate that the Nkx2-5-Notch axis is essential for the generation of both hemogenic and cushion endocardial cells, and the suppression of RA signaling via Dhrs3 expression plays important roles in further differentiation into macrophages. Genetic ablation study revealed that these macrophages are essential in cardiac valve remodeling. In summary, the study demonstrates that the Nkx2-5/Notch/RA signaling plays a pivotal role in macrophage differentiation from hematopoietic progenitors.
Collapse
Affiliation(s)
- Norika Liu
- The Jikei University School of Medicine, Department of Cell Physiology, Tokyo, Japan
- University of California Los Angeles, Department of Molecular Cell and Developmental Biology, Los Angeles, USA
| | - Naofumi Kawahira
- University of California Los Angeles, Department of Molecular Cell and Developmental Biology, Los Angeles, USA
| | | | - Haruko Nakano
- University of California Los Angeles, Department of Molecular Cell and Developmental Biology, Los Angeles, USA
| | - Akiyasu Iwase
- University of Tokyo, Department of Physiological Chemistry and Metabolism, Tokyo, Japan
| | - Yasunobu Uchijima
- University of Tokyo, Department of Physiological Chemistry and Metabolism, Tokyo, Japan
| | - Mei Wang
- The Jikei University School of Medicine, Department of Cell Physiology, Tokyo, Japan
| | - Sean M Wu
- Stanford University, Cardiovascular Institute and Division of Cardiovascular Medicine, Department of Medicine, Stanford, USA
| | - Susumu Minamisawa
- The Jikei University School of Medicine, Department of Cell Physiology, Tokyo, Japan
| | - Hiroki Kurihara
- University of Tokyo, Department of Physiological Chemistry and Metabolism, Tokyo, Japan
| | - Atsushi Nakano
- The Jikei University School of Medicine, Department of Cell Physiology, Tokyo, Japan.
- University of California Los Angeles, Department of Molecular Cell and Developmental Biology, Los Angeles, USA.
- University of California Los Angeles, David Geffen Department of Medicine, Division of Cardiology, Los Angeles, USA.
- Eli and Edythe Broad Center of Regenerative Medicine and Stem Cell Research, University of California, Los Angeles, Los Angeles, USA.
- Molecular Biology Institute, University of California, Los Angeles, Los Angeles, USA.
| |
Collapse
|
5
|
Mo S, Qu K, Huang J, Li Q, Zhang W, Yen K. Cross-species transcriptomics reveals bifurcation point during the arterial-to-hemogenic transition. Commun Biol 2023; 6:827. [PMID: 37558796 PMCID: PMC10412572 DOI: 10.1038/s42003-023-05190-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/28/2023] [Indexed: 08/11/2023] Open
Abstract
Hemogenic endothelium (HE) with hematopoietic stem cell (HSC)-forming potential emerge from specialized arterial endothelial cells (AECs) undergoing the endothelial-to-hematopoietic transition (EHT) in the aorta-gonad-mesonephros (AGM) region. Characterization of this AECs subpopulation and whether this phenomenon is conserved across species remains unclear. Here we introduce HomologySeeker, a cross-species method that leverages refined mouse information to explore under-studied human EHT. Utilizing single-cell transcriptomic ensembles of EHT, HomologySeeker reveals a parallel developmental relationship between these two species, with minimal pre-HSC signals observed in human cells. The pre-HE stage contains a conserved bifurcation point between the two species, where cells progress towards HE or late AECs. By harnessing human spatial transcriptomics, we identify ligand modules that contribute to the bifurcation choice and validate CXCL12 in promoting hemogenic choice using a human in vitro differentiation system. Our findings advance human arterial-to-hemogenic transition understanding and offer valuable insights for manipulating HSC generation using in vitro models.
Collapse
Affiliation(s)
- Shaokang Mo
- Division of Cell, Developmental and Integrative Biology, School of Medicine, South China University of Technology, Guangzhou, China
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
- Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Kengyuan Qu
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
- Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Junfeng Huang
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China.
- Tianjin Institutes of Health Science, Tianjin, 301600, China.
| | - Qiwei Li
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China
- Tianjin Institutes of Health Science, Tianjin, 301600, China
| | - Wenqing Zhang
- Division of Cell, Developmental and Integrative Biology, School of Medicine, South China University of Technology, Guangzhou, China.
| | - Kuangyu Yen
- State Key Laboratory of Experimental Hematology, National Clinical Research Center for Blood Diseases, Haihe Laboratory of Cell Ecosystem, Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, 300020, China.
- Tianjin Institutes of Health Science, Tianjin, 301600, China.
| |
Collapse
|
6
|
Swift SK, Purdy AL, Kolell ME, Andresen KG, Lahue C, Buddell T, Akins KA, Rau CD, O'Meara CC, Patterson M. Cardiomyocyte ploidy is dynamic during postnatal development and varies across genetic backgrounds. Development 2023; 150:dev201318. [PMID: 36912240 PMCID: PMC10113957 DOI: 10.1242/dev.201318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 03/06/2023] [Indexed: 03/14/2023]
Abstract
Somatic polyploidization, an adaptation by which cells increase their DNA content to support growth, is observed in many cell types, including cardiomyocytes. Although polyploidization is believed to be beneficial, progression to a polyploid state is often accompanied by loss of proliferative capacity. Recent work suggests that genetics heavily influence cardiomyocyte ploidy. However, the developmental course by which cardiomyocytes reach their final ploidy state has only been investigated in select backgrounds. Here, we assessed cardiomyocyte number, cell cycle activity, and ploidy dynamics across two divergent mouse strains: C57BL/6J and A/J. Both strains are born and reach adulthood with comparable numbers of cardiomyocytes; however, the end composition of ploidy classes and developmental progression to reach the final state differ substantially. We expand on previous findings that identified Tnni3k as a mediator of cardiomyocyte ploidy and uncover a role for Runx1 in ploidy dynamics and cardiomyocyte cell division, in both developmental and injury contexts. These data provide novel insights into the developmental path to cardiomyocyte polyploidization and challenge the paradigm that hypertrophy is the sole mechanism for growth in the postnatal heart.
Collapse
Affiliation(s)
- Samantha K. Swift
- Medical College of Wisconsin, Department of Cell Biology, Neurobiology, and Anatomy, Milwaukee, WI 53226, USA
| | - Alexandra L. Purdy
- Medical College of Wisconsin, Department of Cell Biology, Neurobiology, and Anatomy, Milwaukee, WI 53226, USA
| | - Mary E. Kolell
- Medical College of Wisconsin, Department of Cell Biology, Neurobiology, and Anatomy, Milwaukee, WI 53226, USA
| | - Kaitlyn G. Andresen
- Medical College of Wisconsin, Department of Cell Biology, Neurobiology, and Anatomy, Milwaukee, WI 53226, USA
| | - Caitlin Lahue
- University of North Carolina School of Medicine, Department of Genetics, Chapel Hill, NC 27599, USA
| | - Tyler Buddell
- Medical College of Wisconsin, Department of Cell Biology, Neurobiology, and Anatomy, Milwaukee, WI 53226, USA
- Medical College of Wisconsin, Cardiovascular Center, Milwaukee, WI 53226, USA
| | - Kaelin A. Akins
- Medical College of Wisconsin, Department of Cell Biology, Neurobiology, and Anatomy, Milwaukee, WI 53226, USA
| | - Christoph D. Rau
- University of North Carolina School of Medicine, Department of Genetics, Chapel Hill, NC 27599, USA
| | - Caitlin C. O'Meara
- Medical College of Wisconsin, Cardiovascular Center, Milwaukee, WI 53226, USA
- Medical College of Wisconsin, Department of Physiology, Milwaukee, WI 53226, USA
| | - Michaela Patterson
- Medical College of Wisconsin, Department of Cell Biology, Neurobiology, and Anatomy, Milwaukee, WI 53226, USA
- Medical College of Wisconsin, Cardiovascular Center, Milwaukee, WI 53226, USA
| |
Collapse
|
7
|
Hou S, Liu C, Yao Y, Bai Z, Gong Y, Wang C, He J, You G, Zhang G, Liu B, Lan Y. Hematopoietic Stem Cell Development in Mammalian Embryos. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1442:1-16. [PMID: 38228955 DOI: 10.1007/978-981-99-7471-9_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Hematopoietic stem cells (HSCs) are situated at the top of the adult hematopoietic hierarchy in mammals and give rise to the majority of blood cells throughout life. Recently, with the advance of multiple single-cell technologies, researchers have unprecedentedly deciphered the cellular and molecular evolution, the lineage relationships, and the regulatory mechanisms underlying HSC emergence in mammals. In this review, we describe the precise vascular origin of HSCs in mouse and human embryos, emphasizing the conservation in the unambiguous arterial characteristics of the HSC-primed hemogenic endothelial cells (HECs). Serving as the immediate progeny of some HECs, functional pre-HSCs of mouse embryos can now be isolated at single-cell level using defined surface marker combinations. Heterogeneity regrading cell cycle status or lineage differentiation bias within HECs, pre-HSCs, or emerging HSCs in mouse embryos has been figured out. Several epigenetic regulatory mechanisms of HSC generation, including long noncoding RNA, DNA methylation modification, RNA splicing, and layered epigenetic modifications, have also been recently uncovered. In addition to that of HSCs, the cellular and molecular events underlying the development of multiple hematopoietic progenitors in human embryos/fetus have been unraveled with the use of series of single-cell technologies. Specifically, yolk sac-derived myeloid-biased progenitors have been identified as the earliest multipotent hematopoietic progenitors in human embryo, serving as an important origin of fetal liver monocyte-derived macrophages. Moreover, the development of multiple hematopoietic lineages in human embryos such as T and B lymphocytes, innate lymphoid cells, as well as myeloid cells like monocytes, macrophages, erythrocytes, and megakaryocytes has also been depicted and reviewed here.
Collapse
Affiliation(s)
- Siyuan Hou
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Chen Liu
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yingpeng Yao
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Zhijie Bai
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yandong Gong
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Chaojie Wang
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| | - Jian He
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Guoju You
- State Key Laboratory of Primate Biomedical Research, State Key Laboratory of Experimental Hematology, School of Medicine, Tsinghua University, Beijing, China
| | - Guangyu Zhang
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Bing Liu
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
- State Key Laboratory of Experimental Hematology, Haihe Laboratory of Cell Ecosystem, Institute of Hematology, Fifth Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yu Lan
- Key Laboratory for Regenerative Medicine of Ministry of Education, Institute of Hematology, School of Medicine, Jinan University, Guangzhou, Guangdong, China
| |
Collapse
|
8
|
Zhao S, Zhang A, Zhu H, Wen Z. The ETS transcription factor Spi2 regulates hematopoietic cell development in zebrafish. Development 2022; 149:276980. [DOI: 10.1242/dev.200881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 08/26/2022] [Indexed: 11/20/2022]
Abstract
ABSTRACT
The E26 transformation-specific or E-twenty-six (ETS) genes encode a superfamily of transcription factors involved in diverse biological processes. Here, we report the identification and characterization of a previously unidentified member of the ETS transcription factors, Spi2, that is found exclusively in the ray-finned fish kingdom. We show that the expression of spi2 is restricted to hemogenic endothelial cells (HECs) and to hematopoietic stem and progenitor cells (HSPCs) in zebrafish. Using bacteria artificial chromosome transgenesis, we generate a spi2 reporter line, TgBAC(spi2:P2a-GFP), which manifests the GFP pattern recapitulating the endogenous spi2 expression. Genetic ablation of spi2 has little effect on HEC formation and the endothelial-to-hematopoietic transition, but results in compromised proliferation of HSPCs in the caudal hematopoietic tissue (CHT) during early development and in severe myeloid lineage defect in adulthood. Epistatic analysis shows that spi2 acts downstream of runx1 in regulating HSPC development in the CHT. Our study identifies Spi2 as an essential regulator for definitive hematopoietic cell development and creates a TgBAC(spi2:P2a-GFP) reporter line for tracking HECs, HSPCs, myeloid cells and thrombocytes from early development to adulthood.
Collapse
Affiliation(s)
- Shizheng Zhao
- State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology 1 Division of Life Science , , Clear Water Bay, Hong Kong , China
| | - Ao Zhang
- State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology 1 Division of Life Science , , Clear Water Bay, Hong Kong , China
| | - Hao Zhu
- State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology 1 Division of Life Science , , Clear Water Bay, Hong Kong , China
| | - Zilong Wen
- State Key Laboratory of Molecular Neuroscience, Hong Kong University of Science and Technology 1 Division of Life Science , , Clear Water Bay, Hong Kong , China
- Greater Bay Biomedical Innocenter, Shenzhen Bay Laboratory, Shenzhen Peking University−Hong Kong University of Science and Technology Medical Center 2 , Shenzhen 518055 , China
| |
Collapse
|
9
|
Hemogenic and aortic endothelium arise from a common hemogenic angioblast precursor and are specified by the Etv2 dosage. Proc Natl Acad Sci U S A 2022; 119:e2119051119. [PMID: 35333649 PMCID: PMC9060440 DOI: 10.1073/pnas.2119051119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
SignificanceHematopoietic stem cells (HSCs) are generated from specialized endothelial cells, called hemogenic endothelial cells (HECs). It has been debated whether HECs and non-HSC-forming conventional endothelial cells (cECs) arise from a common precursor or represent distinct lineages. Moreover, the molecular basis underlying their distinct fate determination is poorly understood. We use photoconvertible labeling, time-lapse imaging, and single-cell RNA-sequencing analysis to trace the lineage of HECs. We discovered that HECs and cECs arise from a common hemogenic angioblast precursor, and their distinct fate is determined by high or low dosage of Etv2, respectively. Our results illuminate the lineage origin and a mechanism on the fate determination of HECs, which may enhance the understanding on the ontogeny of HECs in vertebrates.
Collapse
|
10
|
Menegatti S, Potts B, Garcia-Alegria E, Paredes R, Lie-A-Ling M, Lacaud G, Kouskoff V. The RUNX1b Isoform Defines Hemogenic Competency in Developing Human Endothelial Cells. Front Cell Dev Biol 2021; 9:812639. [PMID: 34977046 PMCID: PMC8716778 DOI: 10.3389/fcell.2021.812639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 12/01/2021] [Indexed: 11/13/2022] Open
Abstract
The transcription factor RUNX1 is a master regulator of blood cell specification. During embryogenesis, hematopoietic progenitors are initially generated from hemogenic endothelium through an endothelium-to-hematopoietic transition controlled by RUNX1. Several studies have dissected the expression pattern and role of RUNX1 isoforms at the onset of mouse hematopoiesis, however the precise pattern of RUNX1 isoform expression and biological output of RUNX1-expressing cells at the onset of human hematopoiesis is still not fully understood. Here, we investigated these questions using a RUNX1b:VENUS RUNX1c:TOMATO human embryonic stem cell line which allows multi-parameter single cell resolution via flow cytometry and isolation of RUNX1b-expressing cells for further analysis. Our data reveal the sequential expression of the two RUNX1 isoforms with RUNX1b expressed first in a subset of endothelial cells and during the endothelial to hematopoietic transition while RUNX1c only becomes expressed in fully specified blood cells. Furthermore, our data show that RUNX1b marks endothelial cells endowed with hemogenic potential and that RUNX1b expression level determines hemogenic competency in a dose-dependent manner. Together our data reveal the dynamic of RUNX1 isoforms expression at the onset of human blood specification and establish RUNX1b isoform as the earliest known marker for hemogenic competency.
Collapse
Affiliation(s)
- Sara Menegatti
- Developmental Hematopoiesis Group, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
- CytoSeek Ltd., Bristol, United Kingdom
| | - Bethany Potts
- Developmental Hematopoiesis Group, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Eva Garcia-Alegria
- Developmental Hematopoiesis Group, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
- Stem Cell Process Development, Adaptimmune Ltd., Abingdon, United Kingdom
| | - Roberto Paredes
- Developmental Hematopoiesis Group, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Michael Lie-A-Ling
- Cancer Research UK Stem Cell Biology Group, Cancer Research UK Manchester Institute, The University of Manchester, Macclesfield, United Kingdom
| | - Georges Lacaud
- Cancer Research UK Stem Cell Biology Group, Cancer Research UK Manchester Institute, The University of Manchester, Macclesfield, United Kingdom
| | - Valerie Kouskoff
- Developmental Hematopoiesis Group, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| |
Collapse
|
11
|
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
|
12
|
Abstract
In this Outlook, Samarakkody and Cantor discuss the results of Howell et al., which provide new mechanistic insights into EHT and take us one step closer to generating patient-specific LT-HSCs from induced pluripotent stem cells. Definitive long-term hematopoietic stem cells (LT-HSCs) arise during embryogenesis in a process termed endothelial-to-hematopoietic transition (EHT), in which specialized hemogenic endothelial cells (HECs) transform into hematopoietic cells. The transcription factor RUNX1 marks HECs and is essential for EHT. Ectopic RUNX1 expression in non-HECs is sufficient to convert them into HECs. However, the conversion efficiency depends on the developmental timing of expression. In this issue of Genes & Development, Howell and colleagues (pp. 1475–1489) leverage this observation to further understand how RUNX1 mediates EHT. They engineered mice that ectopically express RUNX1 in endothelial cells at different developmental time points and doses. They then performed chromatin accessibility and other analyses and correlate this with hemogenic potential. They found that RUNX1 collaborates with TGFβ signaling transcription factors to drive chromatin accessibility changes that specify HECs. They also highlight interesting parallels between EHT and endothelial-to-mesenchymal transition (EndoMT), which occurs during cardiac development. The results of Howell and colleagues provide new mechanistic insights into EHT and take us one step closer to generating patient-specific LT-HSCs from induced pluripotent stem cells.
Collapse
Affiliation(s)
- Ann Sanoji Samarakkody
- Department of Pediatric Hematology-Oncology, Boston Children's Hospital, Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA
| | - Alan B Cantor
- Department of Pediatric Hematology-Oncology, Boston Children's Hospital, Dana Farber Cancer Institute, Harvard Medical School, Boston, Massachusetts 02115, USA.,Harvard Stem Cell Institute, Cambridge, Massachusetts 02138, USA
| |
Collapse
|
13
|
Howell ED, Yzaguirre AD, Gao P, Lis R, He B, Lakadamyali M, Rafii S, Tan K, Speck NA. Efficient hemogenic endothelial cell specification by RUNX1 is dependent on baseline chromatin accessibility of RUNX1-regulated TGFβ target genes. Genes Dev 2021; 35:1475-1489. [PMID: 34675061 PMCID: PMC8559682 DOI: 10.1101/gad.348738.121] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 09/14/2021] [Indexed: 12/26/2022]
Abstract
In this study, Howell et al. found that the ability of RUNX1 to promote endothelial-to-hematopoietic transition (EHT) depends on its ability to recruit the TGFβ signaling effectors AP-1 and SMAD2/3, which in turn is determined by the changing chromatin landscape in embryonic versus fetal ECs. Their work provides insight into the regulation of EndoMT and EHT that will guide reprogramming efforts for clinical applications. Hematopoietic stem and progenitor cells (HSPCs) are generated de novo in the embryo from hemogenic endothelial cells (HECs) via an endothelial-to-hematopoietic transition (EHT) that requires the transcription factor RUNX1. Ectopic expression of RUNX1 alone can efficiently promote EHT and HSPC formation from embryonic endothelial cells (ECs), but less efficiently from fetal or adult ECs. Efficiency correlated with baseline accessibility of TGFβ-related genes associated with endothelial-to-mesenchymal transition (EndoMT) and participation of AP-1 and SMAD2/3 to initiate further chromatin remodeling along with RUNX1 at these sites. Activation of TGFβ signaling improved the efficiency with which RUNX1 specified fetal ECs as HECs. Thus, the ability of RUNX1 to promote EHT depends on its ability to recruit the TGFβ signaling effectors AP-1 and SMAD2/3, which in turn is determined by the changing chromatin landscape in embryonic versus fetal ECs. This work provides insight into regulation of EndoMT and EHT that will guide reprogramming efforts for clinical applications.
Collapse
Affiliation(s)
- Elizabeth D Howell
- Abramson Family Cancer Research Institute, Department of Cell and Developmental Biology, Institute for Regenerative Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia Pennsylvania 19104, USA
| | - Amanda D Yzaguirre
- Abramson Family Cancer Research Institute, Department of Cell and Developmental Biology, Institute for Regenerative Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia Pennsylvania 19104, USA
| | - Peng Gao
- Department of Pediatrics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Genetics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Raphael Lis
- Ansary Stem Cell Institute, Department of Genetic Medicine, Weill Cornell Medical College, New York, New York 10065, USA.,Howard Hughes Medical Institute, Weill Cornell Medical College, New York, New York 10065, USA
| | - Bing He
- Department of Pediatrics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Genetics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Melike Lakadamyali
- Department of Physiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia Pennsylvania 19104, USA
| | - Shahin Rafii
- Ansary Stem Cell Institute, Department of Genetic Medicine, Weill Cornell Medical College, New York, New York 10065, USA.,Howard Hughes Medical Institute, Weill Cornell Medical College, New York, New York 10065, USA
| | - Kai Tan
- Department of Pediatrics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.,Department of Genetics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Nancy A Speck
- Abramson Family Cancer Research Institute, Department of Cell and Developmental Biology, Institute for Regenerative Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia Pennsylvania 19104, USA
| |
Collapse
|
14
|
Xiong H, Luo Y, Wang Q, Yu X, He A. Single-cell joint detection of chromatin occupancy and transcriptome enables higher-dimensional epigenomic reconstructions. Nat Methods 2021; 18:652-660. [PMID: 33958790 DOI: 10.1038/s41592-021-01129-z] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 03/29/2021] [Indexed: 02/02/2023]
Abstract
Deciphering mechanisms in cell-fate decisions requires single-cell holistic reconstructions of multidimensional epigenomic states in transcriptional regulation. Here we develop CoTECH, a combinatorial barcoding method allowing high-throughput single-cell joint detection of chromatin occupancy and transcriptome. We used CoTECH to examine bivalent histone marks (H3K4me3 and H3K27me3) with transcription from naive to primed mouse embryonic stem cells. We also derived concurrent bivalent marks in pseudosingle cells using transcriptome as an anchor for resolving pseudotemporal bivalency trajectories and disentangling a context-specific interplay between H3K4me3/H3K27me3 and transcription level. Next, we revealed the regulatory basis of endothelial-to-hematopoietic transition in two waves of hematopoietic cells and distinctive enhancer-gene-linking schemes guiding hemogenic endothelial cell emergence, indicating a unique epigenetic control of transcriptional regulation for hematopoietic stem cell priming. CoTECH provides an efficient framework for single-cell coassay of chromatin occupancy and transcription, thus enabling higher-dimensional epigenomic reconstructions.
Collapse
Affiliation(s)
- Haiqing Xiong
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, College of Future Technology, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Yingjie Luo
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, College of Future Technology, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Qianhao Wang
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, College of Future Technology, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Xianhong Yu
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, College of Future Technology, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Aibin He
- Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, College of Future Technology, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.
| |
Collapse
|
15
|
Harland LTG, Simon CS, Senft AD, Costello I, Greder L, Imaz-Rosshandler I, Göttgens B, Marioni JC, Bikoff EK, Porcher C, de Bruijn MFTR, Robertson EJ. The T-box transcription factor Eomesodermin governs haemogenic competence of yolk sac mesodermal progenitors. Nat Cell Biol 2021; 23:61-74. [PMID: 33420489 PMCID: PMC7610381 DOI: 10.1038/s41556-020-00611-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Accepted: 11/25/2020] [Indexed: 01/29/2023]
Abstract
Extra-embryonic mesoderm (ExM)-composed of the earliest cells that traverse the primitive streak-gives rise to the endothelium as well as haematopoietic progenitors in the developing yolk sac. How a specific subset of ExM becomes committed to a haematopoietic fate remains unclear. Here we demonstrate using an embryonic stem cell model that transient expression of the T-box transcription factor Eomesodermin (Eomes) governs haemogenic competency of ExM. Eomes regulates the accessibility of enhancers that the transcription factor stem cell leukaemia (SCL) normally utilizes to specify primitive erythrocytes and is essential for the normal development of Runx1+ haemogenic endothelium. Single-cell RNA sequencing suggests that Eomes loss of function profoundly blocks the formation of blood progenitors but not specification of Flk-1+ haematoendothelial progenitors. Our findings place Eomes at the top of the transcriptional hierarchy regulating early blood formation and suggest that haemogenic competence is endowed earlier during embryonic development than was previously appreciated.
Collapse
Affiliation(s)
- Luke T G Harland
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Claire S Simon
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Anna D Senft
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
- National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Ita Costello
- Sir William Dunn School of Pathology, University of Oxford, Oxford, UK
| | - Lucas Greder
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Ivan Imaz-Rosshandler
- Wellcome-MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Cambridge, UK
| | - Berthold Göttgens
- Wellcome-MRC Cambridge Stem Cell Institute, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
| | - John C Marioni
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Cambridge, UK
- Wellcome Sanger Institute, Cambridge, UK
- CRUK Cambridge Institute, University of Cambridge, Cambridge, UK
| | | | - Catherine Porcher
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Marella F T R de Bruijn
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, UK.
| | | |
Collapse
|
16
|
Heck AM, Ishida T, Hadland B. Location, Location, Location: How Vascular Specialization Influences Hematopoietic Fates During Development. Front Cell Dev Biol 2020; 8:602617. [PMID: 33282876 PMCID: PMC7691428 DOI: 10.3389/fcell.2020.602617] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 09/30/2020] [Indexed: 01/22/2023] Open
Abstract
During embryonic development, sequential waves of hematopoiesis give rise to blood-forming cells with diverse lineage potentials and self-renewal properties. This process must accomplish two important yet divergent goals: the rapid generation of differentiated blood cells to meet the needs of the developing embryo and the production of a reservoir of hematopoietic stem cells to provide for life-long hematopoiesis in the adult. Vascular beds in distinct anatomical sites of extraembryonic tissues and the embryo proper provide the necessary conditions to support these divergent objectives, suggesting a critical role for specialized vascular niche cells in regulating disparate blood cell fates during development. In this review, we will examine the current understanding of how organ- and stage-specific vascular niche specialization contributes to the development of the hematopoietic system.
Collapse
Affiliation(s)
- Adam M. Heck
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Takashi Ishida
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
| | - Brandon Hadland
- Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA, United States
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, United States
| |
Collapse
|
17
|
Bruveris FF, Ng ES, Leitoguinho AR, Motazedian A, Vlahos K, Sourris K, Mayberry R, McDonald P, Azzola L, Davidson NM, Oshlack A, Stanley EG, Elefanty AG. Human yolk sac-like haematopoiesis generates RUNX1-, GFI1- and/or GFI 1B-dependent blood and SOX17-positive endothelium. Development 2020; 147:dev.193037. [PMID: 33028609 PMCID: PMC7648599 DOI: 10.1242/dev.193037] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 09/24/2020] [Indexed: 12/22/2022]
Abstract
The genetic regulatory network controlling early fate choices during human blood cell development are not well understood. We used human pluripotent stem cell reporter lines to track the development of endothelial and haematopoietic populations in an in vitro model of human yolk-sac development. We identified SOX17−CD34+CD43− endothelial cells at day 2 of blast colony development, as a haemangioblast-like branch point from which SOX17−CD34+CD43+ blood cells and SOX17+CD34+CD43− endothelium subsequently arose. Most human blood cell development was dependent on RUNX1. Deletion of RUNX1 only permitted a single wave of yolk sac-like primitive erythropoiesis, but no yolk sac myelopoiesis or aorta-gonad-mesonephros (AGM)-like haematopoiesis. Blocking GFI1 and/or GFI1B activity with a small molecule inhibitor abrogated all blood cell development, even in cell lines with an intact RUNX1 gene. Together, our data define the hierarchical requirements for RUNX1, GFI1 and/or GFI1B during early human haematopoiesis arising from a yolk sac-like SOX17-negative haemogenic endothelial intermediate. Highlighted Article: The hierarchical requirements for RUNX1, GFI1 and/or GFI1B during early human haematopoiesis arising from a yolk sac-like haemogenic endothelial intermediate.
Collapse
Affiliation(s)
- Freya F Bruveris
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia.,Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Elizabeth S Ng
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia
| | - Ana Rita Leitoguinho
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia.,Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Ali Motazedian
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia.,Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Katerina Vlahos
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia
| | - Koula Sourris
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia
| | - Robyn Mayberry
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia
| | - Penelope McDonald
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia
| | - Lisa Azzola
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia
| | - Nadia M Davidson
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia.,School of BioSciences, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Alicia Oshlack
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia.,School of BioSciences, University of Melbourne, Parkville, Victoria 3052, Australia
| | - Edouard G Stanley
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia.,Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia.,Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria 3800, Australia
| | - Andrew G Elefanty
- Murdoch Children's Research Institute, The Royal Children's Hospital, Flemington Road, Parkville, Victoria 3052, Australia .,Department of Paediatrics, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria 3052, Australia.,Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria 3800, Australia
| |
Collapse
|
18
|
Hsu J, Huang HT, Lee CT, Choudhuri A, Wilson NK, Abraham BJ, Moignard V, Kucinski I, Yu S, Hyde RK, Tober J, Cai X, Li Y, Guo Y, Yang S, Superdock M, Trompouki E, Calero-Nieto FJ, Ghamari A, Jiang J, Gao P, Gao L, Nguyen V, Robertson AL, Durand EM, Kathrein KL, Aifantis I, Gerber SA, Tong W, Tan K, Cantor AB, Zhou Y, Liu PP, Young RA, Göttgens B, Speck NA, Zon LI. CHD7 and Runx1 interaction provides a braking mechanism for hematopoietic differentiation. Proc Natl Acad Sci U S A 2020; 117:23626-23635. [PMID: 32883883 PMCID: PMC7519295 DOI: 10.1073/pnas.2003228117] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Hematopoietic stem and progenitor cell (HSPC) formation and lineage differentiation involve gene expression programs orchestrated by transcription factors and epigenetic regulators. Genetic disruption of the chromatin remodeler chromodomain-helicase-DNA-binding protein 7 (CHD7) expanded phenotypic HSPCs, erythroid, and myeloid lineages in zebrafish and mouse embryos. CHD7 acts to suppress hematopoietic differentiation. Binding motifs for RUNX and other hematopoietic transcription factors are enriched at sites occupied by CHD7, and decreased RUNX1 occupancy correlated with loss of CHD7 localization. CHD7 physically interacts with RUNX1 and suppresses RUNX1-induced expansion of HSPCs during development through modulation of RUNX1 activity. Consequently, the RUNX1:CHD7 axis provides proper timing and function of HSPCs as they emerge during hematopoietic development or mature in adults, representing a distinct and evolutionarily conserved control mechanism to ensure accurate hematopoietic lineage differentiation.
Collapse
Affiliation(s)
- Jingmei Hsu
- Division of Hematology/Oncology, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA 19104
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA 19104
| | - Hsuan-Ting Huang
- Stem Cell Program and Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Chung-Tsai Lee
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA 19104
| | - Avik Choudhuri
- Department of Stem Cell and Regenerative Biology, Harvard Stem Cell Institute, Harvard University, Cambridge, MA 02138
| | - Nicola K Wilson
- Cambridge Institute for Medical Research, Department of Haematology, Wellcome Trust/Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom CB2 OXY
| | - Brian J Abraham
- Whitehead Institute for Biomedical Research, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142
| | - Victoria Moignard
- Cambridge Institute for Medical Research, Department of Haematology, Wellcome Trust/Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom CB2 OXY
| | - Iwo Kucinski
- Cambridge Institute for Medical Research, Department of Haematology, Wellcome Trust/Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom CB2 OXY
| | - Shuqian Yu
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104
| | - R Katherine Hyde
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892
| | - Joanna Tober
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA 19104
| | - Xiongwei Cai
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA 19104
| | - Yan Li
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA 19104
| | - Yalin Guo
- Department of Microbiology and Immunology, Geisel School of Medicine, Lebanon, NH 03756
| | - Song Yang
- Stem Cell Program and Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Michael Superdock
- Stem Cell Program and Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Eirini Trompouki
- Stem Cell Program and Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Fernando J Calero-Nieto
- Cambridge Institute for Medical Research, Department of Haematology, Wellcome Trust/Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom CB2 OXY
| | - Alireza Ghamari
- Division of Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Jing Jiang
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, PA 19104
| | - Peng Gao
- Division of Oncology and Center for Childhood Cancer Research, Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, PA 19104
| | - Long Gao
- Division of Oncology and Center for Childhood Cancer Research, Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, PA 19104
| | - Vy Nguyen
- Stem Cell Program and Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Anne L Robertson
- Stem Cell Program and Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Ellen M Durand
- Stem Cell Program and Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Katie L Kathrein
- Stem Cell Program and Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Iannis Aifantis
- Department of Pathology and Laura and Isaac Perlmutter Cancer Center, New York University School of Medicine, New York, NY 10016
| | - Scott A Gerber
- Department of Genetics, Geisel School of Medicine, Lebanon, NH 03756
| | - Wei Tong
- Division of Hematology, Children's Hospital of Philadelphia, Philadelphia, PA 19104
| | - Kai Tan
- Division of Oncology and Center for Childhood Cancer Research, Department of Biomedical and Health Informatics, Children's Hospital of Philadelphia, Philadelphia, PA 19104
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Alan B Cantor
- Division of Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - Yi Zhou
- Stem Cell Program and Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
| | - P Paul Liu
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892
| | - Richard A Young
- Whitehead Institute for Biomedical Research, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142
| | - Berthold Göttgens
- Cambridge Institute for Medical Research, Department of Haematology, Wellcome Trust/Medical Research Council Stem Cell Institute, University of Cambridge, Cambridge, United Kingdom CB2 OXY
| | - Nancy A Speck
- Abramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, PA 19104;
- Department of Cell and Developmental Biology, University of Pennsylvania, Philadelphia, PA 19104
| | - Leonard I Zon
- Stem Cell Program and Division of Pediatric Hematology/Oncology, Boston Children's Hospital and Dana Farber Cancer Institute, Harvard Medical School, Boston, MA 02115;
- Department of Stem Cell and Regenerative Biology, Harvard Stem Cell Institute, Harvard University, Cambridge, MA 02138
| |
Collapse
|
19
|
Zhu Q, Gao P, Tober J, Bennett L, Chen C, Uzun Y, Li Y, Howell ED, Mumau M, Yu W, He B, Speck NA, Tan K. Developmental trajectory of prehematopoietic stem cell formation from endothelium. Blood 2020; 136:845-856. [PMID: 32392346 PMCID: PMC7426642 DOI: 10.1182/blood.2020004801] [Citation(s) in RCA: 100] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 04/22/2020] [Indexed: 01/01/2023] Open
Abstract
Hematopoietic stem and progenitor cells (HSPCs) in the bone marrow are derived from a small population of hemogenic endothelial (HE) cells located in the major arteries of the mammalian embryo. HE cells undergo an endothelial to hematopoietic cell transition, giving rise to HSPCs that accumulate in intra-arterial clusters (IAC) before colonizing the fetal liver. To examine the cell and molecular transitions between endothelial (E), HE, and IAC cells, and the heterogeneity of HSPCs within IACs, we profiled ∼40 000 cells from the caudal arteries (dorsal aorta, umbilical, vitelline) of 9.5 days post coitus (dpc) to 11.5 dpc mouse embryos by single-cell RNA sequencing and single-cell assay for transposase-accessible chromatin sequencing. We identified a continuous developmental trajectory from E to HE to IAC cells, with identifiable intermediate stages. The intermediate stage most proximal to HE, which we term pre-HE, is characterized by increased accessibility of chromatin enriched for SOX, FOX, GATA, and SMAD motifs. A developmental bottleneck separates pre-HE from HE, with RUNX1 dosage regulating the efficiency of the pre-HE to HE transition. A distal candidate Runx1 enhancer exhibits high chromatin accessibility specifically in pre-HE cells at the bottleneck, but loses accessibility thereafter. Distinct developmental trajectories within IAC cells result in 2 populations of CD45+ HSPCs; an initial wave of lymphomyeloid-biased progenitors, followed by precursors of hematopoietic stem cells (pre-HSCs). This multiomics single-cell atlas significantly expands our understanding of pre-HSC ontogeny.
Collapse
Affiliation(s)
- Qin Zhu
- Genomics and Computational Biology Graduate Group, University of Pennsylvania, Philadelphia, PA
| | - Peng Gao
- Department of Biomedical and Health Informatics, The Children's Hospital of Philadelphia, Philadelphia, PA; and
| | - Joanna Tober
- Department of Cell and Developmental Biology, Abramson Family Cancer Research Institute, Perelman School of Medicine, and
| | - Laura Bennett
- Department of Cell and Developmental Biology, Abramson Family Cancer Research Institute, Perelman School of Medicine, and
| | - Changya Chen
- Department of Biomedical and Health Informatics, The Children's Hospital of Philadelphia, Philadelphia, PA; and
| | - Yasin Uzun
- Department of Biomedical and Health Informatics, The Children's Hospital of Philadelphia, Philadelphia, PA; and
| | - Yan Li
- Department of Cell and Developmental Biology, Abramson Family Cancer Research Institute, Perelman School of Medicine, and
| | - Elizabeth D Howell
- Department of Cell and Developmental Biology, Abramson Family Cancer Research Institute, Perelman School of Medicine, and
| | - Melanie Mumau
- Department of Cell and Developmental Biology, Abramson Family Cancer Research Institute, Perelman School of Medicine, and
| | - Wenbao Yu
- Department of Biomedical and Health Informatics, The Children's Hospital of Philadelphia, Philadelphia, PA; and
| | - Bing He
- Department of Biomedical and Health Informatics, The Children's Hospital of Philadelphia, Philadelphia, PA; and
| | - Nancy A Speck
- Department of Cell and Developmental Biology, Abramson Family Cancer Research Institute, Perelman School of Medicine, and
| | - Kai Tan
- Genomics and Computational Biology Graduate Group, University of Pennsylvania, Philadelphia, PA
- Department of Biomedical and Health Informatics, The Children's Hospital of Philadelphia, Philadelphia, PA; and
- Department of Pediatrics, University of Pennsylvania, Philadelphia, PA
| |
Collapse
|
20
|
Dong Y, Bai J, Zhang Y, Zhou Y, Pan X, Li X, Zhou Q, Chen Y, Lai M, Mao B, Bian G, Feng J, Xie F, Chen B, Nakahata T, Zhang Y, Ma F. Alpha lipoic acid promotes development of hematopoietic progenitors derived from human embryonic stem cells by antagonizing ROS signals. J Leukoc Biol 2020; 108:1711-1725. [PMID: 32640500 PMCID: PMC7754144 DOI: 10.1002/jlb.1a0520-179r] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 05/18/2020] [Accepted: 06/10/2020] [Indexed: 12/14/2022] Open
Abstract
Antagonism of ROS signaling can inhibit cell apoptosis and autophagy, thus favoring the maintenance and expansion of hematopoietic stem cells. Alpha lipoic acid (ALA), a small antioxidant molecule, affects cell apoptosis by lowering the ROS level. In this study, we show that ALA promoted production of human pluripotent stem cells (hPSCs) derived hemogenic endothelial cells and hematopoietic stem/progenitor cells in vitro. Transcriptome analysis of hPSCs derived hemogenic endothelial cells showed that ALA promoted endothelial‐to‐hematopoietic transition by up‐regulating RUNX1, GFI1, GFI1B, MEIS2, and HIF1A and down‐regulating SOX17, TGFB1, TGFB2, TGFB3, TGFBR1, and TGFBR2. ALA also up‐regulated sensor genes of ROS signals, including HIF1A, FOXO1, FOXO3, ATM, PETEN, SIRT1, and SIRT3, during the process of hPSCs derived hemogenic endothelial cells generation. However, in more mature hPSC‐derived hematopoietic stem/progenitor cells, ALA reduced ROS levels and inhibited apoptosis. In particular, ALA enhanced development of hPSCs derived hematopoietic stem/progenitor cells by up‐regulating HIF1A in response to a hypoxic environment. Furthermore, addition of ALA in ex vivo culture greatly improved the maintenance of functional cord blood HSCs by in vivo transplantation assay. Our findings support the conjecture that ALA plays an important role in efficient regeneration of hematopoietic stem/progenitor cells from hPSCs and maintenance of functional HSCs, providing insight into understanding of regeneration of early hematopoiesis for engineering clinically useful hPSCs derived hematopoietic stem/progenitor cells transplantation. Thus, ALA can be used in the study of hPSCs derived HSCs.
Collapse
Affiliation(s)
- Yong Dong
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Ju Bai
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Yimeng Zhang
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Ya Zhou
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Xu Pan
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Xiaohong Li
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Qiongxiu Zhou
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Yijin Chen
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Mowen Lai
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Bin Mao
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Guohui Bian
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Jia Feng
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Fangxin Xie
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Bo Chen
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Tatsutoshi Nakahata
- Center for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan
| | - Yonggang Zhang
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China
| | - Feng Ma
- Center for Stem Cell Research and Application, Institute of Blood Transfusion, Chinese Academy of Medical Sciences & Peking Union Medical College (CAMS & PUMC), Chengdu, China.,State Key Laboratory of Experimental Hematology, Institute of Hematology and Blood Diseases Hospital, CAMS & PUMC, Tianjin, China
| |
Collapse
|
21
|
Menegatti S, de Kruijf M, Garcia‐Alegria E, Lacaud G, Kouskoff V. Transcriptional control of blood cell emergence. FEBS Lett 2019; 593:3304-3315. [PMID: 31432499 PMCID: PMC6916194 DOI: 10.1002/1873-3468.13585] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 08/09/2019] [Accepted: 08/14/2019] [Indexed: 01/06/2023]
Abstract
The haematopoietic system is established during embryonic life through a series of developmental steps that culminates with the generation of haematopoietic stem cells. Characterisation of the transcriptional network that regulates blood cell emergence has led to the identification of transcription factors essential for this process. Among the many factors wired within this complex regulatory network, ETV2, SCL and RUNX1 are the central components. All three factors are absolutely required for blood cell generation, each one controlling a precise step of specification from the mesoderm germ layer to fully functional blood progenitors. Insight into the transcriptional control of blood cell emergence has been used for devising protocols to generate blood cells de novo, either through reprogramming of somatic cells or through forward programming of pluripotent stem cells. Interestingly, the physiological process of blood cell generation and its laboratory-engineered counterpart have very little in common.
Collapse
Affiliation(s)
- Sara Menegatti
- Developmental Haematopoiesis GroupFaculty of Biology, Medicine and Healththe University of ManchesterUK
| | - Marcel de Kruijf
- Developmental Haematopoiesis GroupFaculty of Biology, Medicine and Healththe University of ManchesterUK
| | - Eva Garcia‐Alegria
- Developmental Haematopoiesis GroupFaculty of Biology, Medicine and Healththe University of ManchesterUK
| | - Georges Lacaud
- Cancer Research UK Stem Cell Biology GroupCancer Research UK Manchester InstituteThe University of ManchesterMacclesfieldUK
| | - Valerie Kouskoff
- Developmental Haematopoiesis GroupFaculty of Biology, Medicine and Healththe University of ManchesterUK
| |
Collapse
|
22
|
Fu Y, Sun S, Man X, Kong C. Increased expression of RUNX1 in clear cell renal cell carcinoma predicts poor prognosis. PeerJ 2019; 7:e7854. [PMID: 31592165 PMCID: PMC6778431 DOI: 10.7717/peerj.7854] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Accepted: 09/08/2019] [Indexed: 01/22/2023] Open
Abstract
Background Runt-related transcription factor 1 (RUNX1) was previously reported to play a dual role in promoting or suppressing tumorigenesis in various malignancies. A public dataset from The Cancer Genome Atlas (TCGA) was used to evaluate the role of RUNX1 in clear cell renal cell carcinoma (ccRCC). Methods The Wilcoxon signed-rank test was used to compare the expression of RUNX1 in ccRCC tissues and normal tissues. The Wilcoxon signed-rank test and logistic regression were utilized to investigate the relationship between clinicopathological factors and RUNX1 expression. Additionally, we analysed the differences in prognosis between patients with high and low expression of RUNX1 via the Kaplan–Meier method and Cox regression. Gene set enrichment analysis (GSEA) was performed to explore the mechanisms of RUNX1 in ccRCC. Results The expression of RUNX1 in ccRCC tissues was significantly higher than that in normal tissues. High expression of RUNX1 was significantly associated with gender (p = 0.003), clinical stage (p < 0.001), tissue infiltration (p < 0.001), lymph node metastasis (p = 0.037) and histological grade (p < 0.001). Logistic regression analysis showed that high RUNX1 expression was significantly correlated with gender (OR = 1.71 for male vs. female, p = 0.004), histological grade (OR = 11.61 for grade IV vs. I, p < 0.001), clinical stage (OR = 1.55 for stage III/IV vs. I/II, p = 0.014) and tissue infiltration (OR = 1.54 for positive vs. negative, p = 0.018). Kaplan–Meier survival curves revealed that the prognosis of patients with ccRCC with high RUNX1 expression was worse than that of patients with ccRCC with low RUNX1 expression (p < 0.001). Univariate Cox regression analysis showed that high RUNX1 expression was strongly correlated with poor prognosis (HR = 1.60, 95% CI [1.31–1.97], p < 0.001). In addition, high expression of RUNX1 was an independent prognostic factor for poor overall survival (OS), with an HR of 1.50 (95% CI [1.20–1.87], p < 0.001) in multivariate Cox analysis. GSEA showed that the apoptosis, B cell receptor signalling pathway, calcium signalling pathway, chemokine signalling pathway, JAK/STAT signalling pathway, MAPK signalling pathway, p53 signalling pathway, pathways in cancer, T cell receptor signalling pathway, Toll-like receptor signalling pathway, VEGF signalling pathway, and Wnt signalling pathway were significantly enriched in the RUNX1 high-expression phenotype. In conclusion, RUNX1 can be used as a novel prognostic factor and therapeutic target in ccRCC.
Collapse
Affiliation(s)
- Yang Fu
- Departments of Urology, The First Hospital of China Medical University, Shenyang, Liaoning, China.,China Medical University, Shenyang, Liaoning, China
| | - Shanshan Sun
- China Medical University, Shenyang, Liaoning, China.,Departments of Pharmacy, The First Hospital of China Medical University, Shenyang, Liaoning, China
| | - Xiaojun Man
- Departments of Urology, The First Hospital of China Medical University, Shenyang, Liaoning, China.,China Medical University, Shenyang, Liaoning, China
| | - Chuize Kong
- Departments of Urology, The First Hospital of China Medical University, Shenyang, Liaoning, China.,China Medical University, Shenyang, Liaoning, China
| |
Collapse
|
23
|
Senserrich J, Batsivari A, Rybtsov S, Gordon-Keylock S, Souilhol C, Buchholz F, Hills D, Zhao S, Medvinsky A. Analysis of Runx1 Using Induced Gene Ablation Reveals Its Essential Role in Pre-liver HSC Development and Limitations of an In Vivo Approach. Stem Cell Reports 2019; 11:784-794. [PMID: 30208304 PMCID: PMC6135942 DOI: 10.1016/j.stemcr.2018.08.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Revised: 08/02/2018] [Accepted: 08/03/2018] [Indexed: 12/15/2022] Open
Abstract
Hematopoietic stem cells (HSCs) develop in the embryonic aorta-gonad-mesonephros (AGM) region and subsequently relocate to fetal liver. Runx1 transcription factor is essential for HSC development, but is largely dispensable for adult HSCs. Here, we studied tamoxifen-inducible Runx1 inactivation in vivo. Induction at pre-liver stages (up to embryonic day 10.5) reduced erythromyeloid progenitor numbers, but surprisingly did not block the appearance of Runx1-null HSCs in liver. By contrast, ex vivo analysis showed an absolute Runx1 dependency of HSC development in the AGM region. We found that, contrary to current beliefs, significant Cre-inducing tamoxifen activity persists in mouse blood for at least 72 hr after injection. This deferred recombination can hit healthy HSCs, which escaped early Runx1 ablation and result in appearance of Runx1-null HSCs in liver. Such extended recombination activity in vivo is a potential source of misinterpretation, particularly in analysis of dynamic developmental processes during embryogenesis. Runx1 ablation induced in vivo at the AGM stage yields null HSCs in fetal liver Controlled Runx1 ablation in cultured AGM region blocks HSC development Discrepancy is explained by persistence of Cre activity in vivo for at least 3 days Runx1 is essential at pre-liver stage of HSC development
Collapse
Affiliation(s)
- Jordi Senserrich
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Antoniana Batsivari
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Stanislav Rybtsov
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | | | - Celine Souilhol
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Frank Buchholz
- Max Planck Institute of Molecular Cell Biology and Genetics, Technische Universität Dresden, Dresden 01307, Germany
| | - David Hills
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Suling Zhao
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Alexander Medvinsky
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK.
| |
Collapse
|
24
|
Abstract
Evidence of the diversity and multi-layered organization of the hematopoietic system is leading to new insights that may inform ex vivo production of blood cells. Interestingly, not all long-lived hematopoietic cells derive from hematopoietic stem cells (HSCs). Here we review the current knowledge on HSC-dependent cell lineages and HSC-independent tissue-resident hematopoietic cells and how they arise during embryonic development. Classical embryological and genetic experiments, cell fate tracing data, single-cell imaging, and transcriptomics studies provide information on the molecular/cell trajectories that form the complete hematopoietic system. We also discuss the current developmentally informed efforts toward generating engraftable and multilineage blood cells.
Collapse
Affiliation(s)
- Elaine Dzierzak
- MRC Centre for Inflammation Research, University of Edinburgh, Queen's Medical Research Institute, 47 Little France Crescent, Edinburgh, EH16 4TJ, UK.
| | - Anna Bigas
- Program in Cancer Research, Institut Hospital del Mar d'Investigacions Mèdiques, CIBERONC, Dr. Aiguader 88, 08003, Barcelona, Spain.
| |
Collapse
|
25
|
Sharifpanah F, Ali EH, Wartenberg M, Sauer H. The milk thistle (Silybum marianum) compound Silibinin stimulates leukopoiesis from mouse embryonic stem cells. Phytother Res 2019; 33:452-460. [PMID: 30548344 DOI: 10.1002/ptr.6241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 10/30/2018] [Accepted: 11/05/2018] [Indexed: 01/02/2023]
Abstract
The milk thistle compound Silibinin (i.e., a 1:1 mixture of Silybin A and Silybin B) stimulates vasculogenesis of mouse embryonic stem (ES) cells. Because vasculogenesis and leukopoiesis are interrelated, the effect of Silibinin on leukopoiesis of ES cells was investigated. Treatment of differentiating ES cells with hydrosoluble Silibinin-C-2',3-dihydrogen succinate dose-dependent increased the number of CD18+ , CD45+ , and CD68+ cells, indicating leukocyte/macrophage differentiation. Silibinin treatment activated phosphoinositide 3-kinase (PI3K), AKT (protein kinase B), signal transducer and activator of transcription 3 (STAT3), stimulated hypoxia-induced factor-1α (HIF-1α), and vascular endothelial growth factor receptor 2 (VEGFR2) expression and raised intracellular nitric oxide (NO). Western blot experiments showed that upon coincubation with either the PI3K inhibitor LY294002, the STAT3 inhibitor Stattic, the AKT antagonist AKT inhibitor VIII, or the NO inhibitor L-NAME, the Silibinin-induced expression of CD18, CD45, and CD68 was abolished. Moreover, the stimulation of HIF-1α and VEGFR2 expression was blunted upon STAT3 and PI3K/AKT inhibition. Treatment of differentiating ES cells with L-NAME abolished the stimulation of VEGFR2 and VE-cadherin expression achieved with Silibinin, indicating that NO is involved in vasculogenesis and leukocyte differentiation pathways. In summary, the data of the present study demonstrate that Silibinin stimulates leukocyte differentiation of ES cells, which is associated to vasculogenesis and regulated by PI3K/AKT-, STAT3-, and NO-mediated signaling.
Collapse
Affiliation(s)
- Fatemeh Sharifpanah
- Department of Physiology, Faculty of Medicine, Justus Liebig University Giessen, Giessen, Germany
| | - Enas Hussein Ali
- Department of Physiology, Faculty of Medicine, Justus Liebig University Giessen, Giessen, Germany
| | - Maria Wartenberg
- Department of Internal Medicine I, Division of Cardiology, Angiology, Pneumology and Intensive Medical Care, University Hospital Jena, Friedrich-Schiller-University Jena, Jena, Germany
| | - Heinrich Sauer
- Department of Physiology, Faculty of Medicine, Justus Liebig University Giessen, Giessen, Germany
| |
Collapse
|
26
|
McMenamin PG, Saban DR, Dando SJ. Immune cells in the retina and choroid: Two different tissue environments that require different defenses and surveillance. Prog Retin Eye Res 2018; 70:85-98. [PMID: 30552975 DOI: 10.1016/j.preteyeres.2018.12.002] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 12/03/2018] [Accepted: 12/11/2018] [Indexed: 01/04/2023]
Abstract
In the eye immune defenses must take place in a plethora of differing microenvironments ranging from the corneal and conjunctival epithelia facing the external environment to the pigmented connective tissue of the uveal tract containing smooth muscle, blood vessels and peripheral nerves to the innermost and highly protected neural retina. The extravascular environment of the neural retina, like the brain parenchyma, is stringently controlled to maintain conditions required for neural transmission. The unique physiological nature of the neural retina can be attributed to the blood retinal barriers (BRB) of the retinal vasculature and the retinal pigment epithelium, which both tightly regulate the transport of small molecules and restrict passage of cells and macromolecules from the circulation into the retina in a similar fashion to the blood brain barrier (BBB). The extracellular environment of the neural retina differs markedly from that of the highly vascular, loose connective tissue of the choroid, which lies outside the BRB. The choroid hosts a variety of immune cell types, including macrophages, dendritic cells (DCs) and mast cells. This is in marked contrast to the neural parenchyma of the retina, which is populated almost solely by microglia. This review will describe the current understanding of the distribution, phenotype and physiological role of ocular immune cells behind or inside the blood-retinal barriers and those in closely juxtaposed tissues outside the barrier. The nature and function of these immune cells can profoundly influence retinal homeostasis and lead to disordered immune function that can lead to vision loss.
Collapse
Affiliation(s)
- Paul G McMenamin
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia.
| | - Daniel R Saban
- Department of Ophthalmology, Department of Immunology, Duke University School of Medicine, Durham, NC, USA
| | - Samantha J Dando
- Department of Anatomy and Developmental Biology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| |
Collapse
|
27
|
Hamidi S, Sheng G. Epithelial-mesenchymal transition in haematopoietic stem cell development and homeostasis. J Biochem 2018; 164:265-275. [DOI: 10.1093/jb/mvy063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 07/14/2018] [Indexed: 12/18/2022] Open
Affiliation(s)
- Sofiane Hamidi
- Laboratory of Developmental Morphogenesis, International Research Center for Medical Sciences, Kumamoto University, Kumamoto, Japan
| | - Guojun Sheng
- Laboratory of Developmental Morphogenesis, International Research Center for Medical Sciences, Kumamoto University, Kumamoto, Japan
| |
Collapse
|
28
|
Kang H, Mesquitta WT, Jung HS, Moskvin OV, Thomson JA, Slukvin II. GATA2 Is Dispensable for Specification of Hemogenic Endothelium but Promotes Endothelial-to-Hematopoietic Transition. Stem Cell Reports 2018; 11:197-211. [PMID: 29861167 PMCID: PMC6066910 DOI: 10.1016/j.stemcr.2018.05.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 05/02/2018] [Accepted: 05/03/2018] [Indexed: 01/05/2023] Open
Abstract
The transcriptional factor GATA2 is required for blood and hematopoietic stem cell formation during the hemogenic endothelium (HE) stage of development in the embryo. However, it is unclear if GATA2 controls HE lineage specification or if it solely regulates endothelial-to-hematopoietic transition (EHT). To address this problem, we innovated a unique system, which involved generating GATA2 knockout human embryonic stem cell (hESC) lines with conditional GATA2 expression (iG2-/- hESCs). We demonstrated that GATA2 activity is not required for VE-cadherin+CD43-CD73+ non-HE or VE-cadherin+CD43-CD73- HE generation and subsequent HE diversification into DLL4+ arterial and DLL4- non-arterial lineages. However, GATA2 is primarily needed for HE to undergo EHT. Forced expression of GATA2 in non-HE failed to induce blood formation. The lack of GATA2 requirement for generation of HE and non-HE indicates the critical role of GATA2-independent pathways in specification of these two distinct endothelial lineages.
Collapse
Affiliation(s)
- HyunJun Kang
- Wisconsin National Primate Research Center, University of Wisconsin Graduate School, 1220 Capitol Court, Madison, WI 53715, USA
| | - Walatta-Tseyon Mesquitta
- Wisconsin National Primate Research Center, University of Wisconsin Graduate School, 1220 Capitol Court, Madison, WI 53715, USA
| | - Ho Sun Jung
- Wisconsin National Primate Research Center, University of Wisconsin Graduate School, 1220 Capitol Court, Madison, WI 53715, USA
| | - Oleg V Moskvin
- Wisconsin National Primate Research Center, University of Wisconsin Graduate School, 1220 Capitol Court, Madison, WI 53715, USA
| | - James A Thomson
- Morgridge Institute for Research, 330 N. Orchard Street, Madison, WI 53715, USA; Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53707-7365, USA; Department of Molecular, Cellular, and Developmental Biology, University of California, Santa Barbara, CA 93106, USA
| | - Igor I Slukvin
- Wisconsin National Primate Research Center, University of Wisconsin Graduate School, 1220 Capitol Court, Madison, WI 53715, USA; Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53707-7365, USA; Department of Pathology and Laboratory Medicine, University of Wisconsin Medical School, 600 Highland Avenue, Madison, WI 53792, USA.
| |
Collapse
|
29
|
Jankowska-Steifer E, Niderla-Bielińska J, Ciszek B, Kujawa M, Bartkowiak M, Flaht-Zabost A, Klosinska D, Ratajska A. Cells with hematopoietic potential reside within mouse proepicardium. Histochem Cell Biol 2018; 149:577-591. [PMID: 29549430 PMCID: PMC5999137 DOI: 10.1007/s00418-018-1661-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2018] [Indexed: 02/07/2023]
Abstract
During embryonic development, hematopoietic cells are present in areas of blood-vessel differentiation. These hematopoietic cells emerge from a specific subpopulation of endothelial cells called the hemogenic endothelium. We have previously found that mouse proepicardium contained its own population of endothelial cells forming a network of vascular tubules. We hypothesize that this EC population contains cells of hematopoietic potential. Therefore, we investigated an in vitro hematopoietic potential of proepicardial cell populations. The CD31+/CD45-/CD71- cell population cultured for 10 days in MethocultTM gave numerous colonies of CFU-GEMM, CFU-GM, and CFU-E type. These colonies consisted of various cell types. Flk-1+/CD31-/CD45-/CD71-, and CD45+ and/or CD71+ cell populations produced CFU-GEMM and CFU-GM, or CFU-GM and CFU-E colonies, respectively. Immunohistochemical evaluations of smears prepared from colonies revealed the presence of cells of different hematopoietic lineages. These cells were characterized by labeling with various combinations of antibodies directed against CD31, CD41, CD71, c-kit, Mpl, Fli1, Gata-2, and Zeb1 markers. Furthermore, we found that proepicardium-specific marker WT1 co-localized with Runx1 and Zeb1 and that single endothelial cells bearing CD31 molecule expressed Runx1 in the proepicardial area of embryonic tissue sections. We have shown that cells of endothelial and/or hematopoietic phenotypes isolated from mouse proepicardium possess hematopoietic potential in vitro and in situ. These results are supported by RT-PCR analyses of proepicardial extract, which revealed the expression of mRNA for crucial regulatory factors for hemogenic endothelium specification, i.e., Runx1, Notch1, Gata2, and Sox17. Our data are in line with previous observation on hemangioblast derivation from the quail PE.
Collapse
Affiliation(s)
- Ewa Jankowska-Steifer
- Department of Histology and Embryology, Center for Biostructure, Medical University of Warsaw, Chalubińskiego 5, 02-004, Warsaw, Poland
| | - Justyna Niderla-Bielińska
- Department of Histology and Embryology, Center for Biostructure, Medical University of Warsaw, Chalubińskiego 5, 02-004, Warsaw, Poland.
| | - Bogdan Ciszek
- Department of Anatomy, Medical University of Warsaw, Warsaw, Poland
| | - Marek Kujawa
- Department of Histology and Embryology, Center for Biostructure, Medical University of Warsaw, Chalubińskiego 5, 02-004, Warsaw, Poland
| | - Mateusz Bartkowiak
- Department of Histology and Embryology, Center for Biostructure, Medical University of Warsaw, Chalubińskiego 5, 02-004, Warsaw, Poland
| | | | - Daria Klosinska
- Department of Histology and Embryology, Warsaw University of Life Sciences, WULS, SGGW Nowoursynowska 166, 02-787, Warsaw, Poland
| | - Anna Ratajska
- Department of Pathology, Medical University of Warsaw, Warsaw, Poland
| |
Collapse
|