1
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Zhou W, Ghersi JJ, Ristori E, Semanchik N, Prendergast A, Zhang R, Carneiro P, Baldissera G, Sessa WC, Nicoli S. Akt is a mediator of artery specification during zebrafish development. Development 2024; 151:dev202727. [PMID: 39101673 DOI: 10.1242/dev.202727] [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: 01/23/2024] [Accepted: 07/16/2024] [Indexed: 08/06/2024]
Abstract
The dorsal aorta (DA) is the first major blood vessel to develop in the embryonic cardiovascular system. Its formation is governed by a coordinated process involving the migration, specification, and arrangement of angioblasts into arterial and venous lineages, a process conserved across species. Although vascular endothelial growth factor a (VEGF-A) is known to drive DA specification and formation, the kinases involved in this process remain ambiguous. Thus, we investigated the role of protein kinase B (Akt) in zebrafish by generating a quadruple mutant (aktΔ/Δ), in which expression and activity of all Akt genes - akt1, -2, -3a and -3b - are strongly decreased. Live imaging of developing aktΔ/Δ DA uncovers early arteriovenous malformations. Single-cell RNA-sequencing analysis of aktΔ/Δ endothelial cells corroborates the impairment of arterial, yet not venous, cell specification. Notably, endothelial specific expression of ligand-independent activation of Notch or constitutively active Akt1 were sufficient to re-establish normal arterial specification in aktΔ/Δ. The Akt loss-of-function mutant unveils that Akt kinase can act upstream of Notch in arterial endothelial cells, and is involved in proper embryonic artery specification. This sheds light on cardiovascular development, revealing a mechanism behind congenital malformations.
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Affiliation(s)
- Wenping Zhou
- Vascular Biology & Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA
- Department of Cell Biology, Yale University School of Medicine, New Haven, CT 06511, USA
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Joey J Ghersi
- Vascular Biology & Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA
- Yale Cardiovascular Research Center, Department of Internal Medicine, Section of Cardiology, Yale University School of Medicine, New Haven, CT 06511, USA
- Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA
- Pathologies Foetomaternelles et Néonatales, Centre Hospitalier Universitaire Sainte-Justine Research Center, Montréal, QC H3T 1C5, Canada
- Department of Pathology and Cell Biology, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Emma Ristori
- Vascular Biology & Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA
- Yale Cardiovascular Research Center, Department of Internal Medicine, Section of Cardiology, Yale University School of Medicine, New Haven, CT 06511, USA
| | - Nicole Semanchik
- Vascular Biology & Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA
- Yale Cardiovascular Research Center, Department of Internal Medicine, Section of Cardiology, Yale University School of Medicine, New Haven, CT 06511, USA
- Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Andrew Prendergast
- Department of Comparative Medicine, Yale zebrafish Research Core, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Rong Zhang
- Vascular Biology & Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Paola Carneiro
- Vascular Biology & Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA
- Yale Cardiovascular Research Center, Department of Internal Medicine, Section of Cardiology, Yale University School of Medicine, New Haven, CT 06511, USA
- Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Gabriel Baldissera
- Yale Cardiovascular Research Center, Department of Internal Medicine, Section of Cardiology, Yale University School of Medicine, New Haven, CT 06511, USA
- Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA
| | - William C Sessa
- Vascular Biology & Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA
- Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Stefania Nicoli
- Vascular Biology & Therapeutics Program, Yale University School of Medicine, New Haven, CT 06520, USA
- Department of Pharmacology, Yale University School of Medicine, New Haven, CT 06510, USA
- Yale Cardiovascular Research Center, Department of Internal Medicine, Section of Cardiology, Yale University School of Medicine, New Haven, CT 06511, USA
- Department of Genetics, Yale University School of Medicine, New Haven, CT 06510, USA
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2
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Kocere A, Chiavacci E, Soneson C, Wells HH, Méndez-Acevedo KM, MacGowan JS, Jacobson ST, Hiltabidle MS, Raghunath A, Shavit JA, Panáková D, Williams MLK, Robinson MD, Mosimann C, Burger A. Rbm8a deficiency causes hematopoietic defects by modulating Wnt/PCP signaling. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.04.12.536513. [PMID: 37090609 PMCID: PMC10120739 DOI: 10.1101/2023.04.12.536513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
Defects in blood development frequently occur among syndromic congenital anomalies. Thrombocytopenia-Absent Radius (TAR) syndrome is a rare congenital condition with reduced platelets (hypomegakaryocytic thrombocytopenia) and forelimb anomalies, concurrent with more variable heart and kidney defects. TAR syndrome associates with hypomorphic gene function for RBM8A/Y14 that encodes a component of the exon junction complex involved in mRNA splicing, transport, and nonsense-mediated decay. How perturbing a general mRNA-processing factor causes the selective TAR Syndrome phenotypes remains unknown. Here, we connect zebrafish rbm8a perturbation to early hematopoietic defects via attenuated non-canonical Wnt/Planar Cell Polarity (PCP) signaling that controls developmental cell re-arrangements. In hypomorphic rbm8a zebrafish, we observe a significant reduction of cd41-positive thrombocytes. rbm8a-mutant zebrafish embryos accumulate mRNAs with individual retained introns, a hallmark of defective nonsense-mediated decay; affected mRNAs include transcripts for non-canonical Wnt/PCP pathway components. We establish that rbm8a-mutant embryos show convergent extension defects and that reduced rbm8a function interacts with perturbations in non-canonical Wnt/PCP pathway genes wnt5b, wnt11f2, fzd7a, and vangl2. Using live-imaging, we found reduced rbm8a function impairs the architecture of the lateral plate mesoderm (LPM) that forms hematopoietic, cardiovascular, kidney, and forelimb skeleton progenitors as affected in TAR Syndrome. Both mutants for rbm8a and for the PCP gene vangl2 feature impaired expression of early hematopoietic/endothelial genes including runx1 and the megakaryocyte regulator gfi1aa. Together, our data propose aberrant LPM patterning and hematopoietic defects as consequence of attenuated non-canonical Wnt/PCP signaling upon reduced rbm8a function. These results also link TAR Syndrome to a potential LPM origin and a developmental mechanism.
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Affiliation(s)
- Agnese Kocere
- Department of Pediatrics, Section of Developmental Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
- Department of Molecular Life Sciences, University of Zürich, Zürich, Switzerland
| | - Elena Chiavacci
- Department of Molecular Life Sciences, University of Zürich, Zürich, Switzerland
| | - Charlotte Soneson
- Department of Molecular Life Sciences, University of Zürich, Zürich, Switzerland
- SIB Swiss Institute of Bioinformatics, University of Zürich, Zürich, Switzerland
| | - Harrison H. Wells
- Department of Pediatrics, Section of Developmental Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | - Jacalyn S. MacGowan
- Center for Precision Environmental Health and Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Seth T. Jacobson
- Department of Pediatrics, Section of Developmental Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Max S. Hiltabidle
- Department of Pediatrics, Section of Developmental Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Azhwar Raghunath
- Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Jordan A. Shavit
- Department of Pediatrics, University of Michigan Medical School, Ann Arbor, MI, USA
- Department of Human Genetics, University of Michigan Medical School, Ann Arbor, MI, USA
| | - Daniela Panáková
- Max Delbrück Center (MDC) for Molecular Medicine in the Helmholtz Association, Berlin-Buch, Germany
- University Hospital Schleswig Holstein, Kiel, Germany
- German Centre for Cardiovascular Research (DZHK), partner site Hamburg, Kiel, Lübeck, Germany
| | - Margot L. K. Williams
- Center for Precision Environmental Health and Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Mark D. Robinson
- Department of Molecular Life Sciences, University of Zürich, Zürich, Switzerland
- SIB Swiss Institute of Bioinformatics, University of Zürich, Zürich, Switzerland
| | - Christian Mosimann
- Department of Pediatrics, Section of Developmental Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Alexa Burger
- Department of Pediatrics, Section of Developmental Biology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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3
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Dharmadhikari AV, Abad MA, Khan S, Maroofian R, Sands TT, Ullah F, Samejima I, Wear MA, Moore KE, Kondakova E, Mitina N, Schaub T, Lee GK, Umandap CH, Berger SM, Iglesias AD, Popp B, Jamra RA, Gabriel H, Rentas S, Rippert AL, Izumi K, Conlin LK, Koboldt DC, Mosher TM, Hickey SE, Albert DVF, Norwood H, Lewanda AF, Dai H, Liu P, Mitani T, Marafi D, Pehlivan D, Posey JE, Lippa N, Vena N, Heinzen EL, Goldstein DB, Mignot C, de Sainte Agathe JM, Al-Sannaa NA, Zamani M, Sadeghian S, Azizimalamiri R, Seifia T, Zaki MS, Abdel-Salam GMH, Abdel-Hamid M, Alabdi L, Alkuraya FS, Dawoud H, Lofty A, Bauer P, Zifarelli G, Afzal E, Zafar F, Efthymiou S, Gossett D, Towne MC, Yeneabat R, Wontakal SN, Aggarwal VS, Rosenfeld JA, Tarabykin V, Ohta S, Lupski JR, Houlden H, Earnshaw WC, Davis EE, Jeyaprakash AA, Liao J. RNA methyltransferase SPOUT1/CENP-32 links mitotic spindle organization with the neurodevelopmental disorder SpADMiSS. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.01.09.23300329. [PMID: 38260255 PMCID: PMC10802637 DOI: 10.1101/2024.01.09.23300329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
SPOUT1/CENP-32 encodes a putative SPOUT RNA methyltransferase previously identified as a mitotic chromosome associated protein. SPOUT1/CENP-32 depletion leads to centrosome detachment from the spindle poles and chromosome misalignment. Aided by gene matching platforms, we identified 24 individuals with neurodevelopmental delays from 18 families with bi-allelic variants in SPOUT1/CENP-32 detected by exome/genome sequencing. Zebrafish spout1/cenp-32 mutants showed reduction in larval head size with concomitant apoptosis likely associated with altered cell cycle progression. In vivo complementation assays in zebrafish indicated that SPOUT1/CENP-32 missense variants identified in humans are pathogenic. Crystal structure analysis of SPOUT1/CENP-32 revealed that most disease-associated missense variants mapped to the catalytic domain. Additionally, SPOUT1/CENP-32 recurrent missense variants had reduced methyltransferase activity in vitro and compromised centrosome tethering to the spindle poles in human cells. Thus, SPOUT1/CENP-32 pathogenic variants cause an autosomal recessive neurodevelopmental disorder: SpADMiSS ( SPOUT1 Associated Development delay Microcephaly Seizures Short stature) underpinned by mitotic spindle organization defects and consequent chromosome segregation errors.
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4
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Mahony CB, Copper L, Vrljicak P, Noyvert B, Constantinidou C, Browne S, Pan Y, Palles C, Ott S, Higgs MR, Monteiro R. Lineage skewing and genome instability underlie marrow failure in a zebrafish model of GATA2 deficiency. Cell Rep 2023; 42:112571. [PMID: 37256751 DOI: 10.1016/j.celrep.2023.112571] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 03/14/2023] [Accepted: 05/12/2023] [Indexed: 06/02/2023] Open
Abstract
Inherited bone marrow failure associated with heterozygous mutations in GATA2 predisposes toward hematological malignancies, but the mechanisms remain poorly understood. Here, we investigate the mechanistic basis of marrow failure in a zebrafish model of GATA2 deficiency. Single-cell transcriptomics and chromatin accessibility assays reveal that loss of gata2a leads to skewing toward the erythroid lineage at the expense of myeloid cells, associated with loss of cebpa expression and decreased PU.1 and CEBPA transcription factor accessibility in hematopoietic stem and progenitor cells (HSPCs). Furthermore, gata2a mutants show impaired expression of npm1a, the zebrafish NPM1 ortholog. Progressive loss of npm1a in HSPCs is associated with elevated levels of DNA damage in gata2a mutants. Thus, Gata2a maintains myeloid lineage priming through cebpa and protects against genome instability and marrow failure by maintaining expression of npm1a. Our results establish a potential mechanism underlying bone marrow failure in GATA2 deficiency.
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Affiliation(s)
- Christopher B Mahony
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Lucy Copper
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK; Cancer Research UK Birmingham Centre, Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Pavle Vrljicak
- Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, UK
| | - Boris Noyvert
- Centre for Computational Biology, Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Chrystala Constantinidou
- Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, UK; Bioinformatics Research Technology Platform, University of Warwick, Coventry, UK
| | - Sofia Browne
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Yi Pan
- Centre for Computational Biology, Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Claire Palles
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Sascha Ott
- Division of Biomedical Sciences, Warwick Medical School, University of Warwick, Coventry, UK; Bioinformatics Research Technology Platform, University of Warwick, Coventry, UK
| | - Martin R Higgs
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK
| | - Rui Monteiro
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, UK.
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5
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Edwards HE, Elizalde MJ, Souder JP, Gorelick DA. Hemato-vascular specification requires arnt1 and arnt2 genes in zebrafish embryos. Development 2023; 150:dev200500. [PMID: 37039097 PMCID: PMC10163348 DOI: 10.1242/dev.200500] [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: 01/04/2022] [Accepted: 03/27/2023] [Indexed: 04/12/2023]
Abstract
During embryonic development, a subset of cells in the mesoderm germ layer are specified as hemato-vascular progenitor cells, which then differentiate into endothelial cells and hematopoietic stem and progenitor cells. In zebrafish, the transcription factor npas4l (cloche) is required for the specification of hemato-vascular progenitor cells. However, it is unclear whether npas4l is the sole factor at the top of the hemato-vascular specification cascade. Here, we show that arnt1 and arnt2 genes are required for hemato-vascular specification. We found that arnt1;arnt2 double mutant zebrafish embryos, but not arnt1 or arnt2 single mutants, lack blood cells and most endothelial cells. arnt1/2 mutants have reduced or absent expression of etsrp and tal1, the earliest known endothelial and hematopoietic transcription factor genes. We found that Npas4l binds both Arnt1 and Arnt2 proteins in vitro, consistent with the idea that PAS domain-containing bHLH transcription factors act in a multimeric complex to regulate gene expression. Our results demonstrate that npas4l, arnt1 and arnt2 act together to regulate endothelial and hematopoietic cell fate, where each gene is necessary, but not sufficient, to drive hemato-vascular specification.
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Affiliation(s)
- Hailey E. Edwards
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Mary Jane Elizalde
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Jaclyn P. Souder
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Daniel A. Gorelick
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX 77030, USA
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6
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Potts KS, Cameron RC, Metidji A, Ghazale N, Wallace L, Leal-Cervantes AI, Palumbo R, Barajas JM, Gupta V, Aluri S, Pradhan K, Myers JA, McKinstry M, Bai X, Choudhary GS, Shastri A, Verma A, Obeng EA, Bowman TV. Splicing factor deficits render hematopoietic stem and progenitor cells sensitive to STAT3 inhibition. Cell Rep 2022; 41:111825. [PMID: 36516770 PMCID: PMC9994853 DOI: 10.1016/j.celrep.2022.111825] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 10/01/2022] [Accepted: 11/22/2022] [Indexed: 12/14/2022] Open
Abstract
Hematopoietic stem and progenitor cells (HSPCs) sustain lifelong hematopoiesis. Mutations of pre-mRNA splicing machinery, especially splicing factor 3b, subunit 1 (SF3B1), are early lesions found in malignancies arising from HSPC dysfunction. However, why splicing factor deficits contribute to HSPC defects remains incompletely understood. Using zebrafish, we show that HSPC formation in sf3b1 homozygous mutants is dependent on STAT3 activation. Clinically, mutations in SF3B1 are heterozygous; thus, we explored if targeting STAT3 could be a vulnerability in these cells. We show that SF3B1 heterozygosity confers heightened sensitivity to STAT3 inhibition in zebrafish, mouse, and human HSPCs. Cells carrying mutations in other splicing factors or treated with splicing modulators are also more sensitive to STAT3 inhibition. Mechanistically, we illustrate that STAT3 inhibition exacerbates aberrant splicing in SF3B1 mutant cells. Our findings reveal a conserved vulnerability of splicing factor mutant HSPCs that could allow for their selective targeting in hematologic malignancies.
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Affiliation(s)
- Kathryn S Potts
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Rosannah C Cameron
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Amina Metidji
- Department of Oncology, St. Jude's Children Research Hospital, Memphis, TN 38105, USA
| | - Noura Ghazale
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - LaShanale Wallace
- Department of Oncology, St. Jude's Children Research Hospital, Memphis, TN 38105, USA
| | - Ana I Leal-Cervantes
- Department of Oncology, St. Jude's Children Research Hospital, Memphis, TN 38105, USA
| | - Reid Palumbo
- Department of Oncology, St. Jude's Children Research Hospital, Memphis, TN 38105, USA
| | - Juan Martin Barajas
- Department of Oncology, St. Jude's Children Research Hospital, Memphis, TN 38105, USA
| | - Varun Gupta
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Srinivas Aluri
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Department of Oncology, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY 10461, USA
| | - Kith Pradhan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY 10461, USA
| | - Jacquelyn A Myers
- Department of Oncology, St. Jude's Children Research Hospital, Memphis, TN 38105, USA
| | - Mia McKinstry
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Xiaoying Bai
- Department of Obstetrics and Gynecology, University of Texas, Dallas, TX, USA
| | - Gaurav S Choudhary
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Department of Oncology, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY 10461, USA
| | - Aditi Shastri
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Department of Oncology, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY 10461, USA; Montefiore Einstein Cancer Center, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY 10461, USA
| | - Amit Verma
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Department of Oncology, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY 10461, USA; Montefiore Einstein Cancer Center, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY 10461, USA
| | - Esther A Obeng
- Department of Oncology, St. Jude's Children Research Hospital, Memphis, TN 38105, USA.
| | - Teresa V Bowman
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Department of Oncology, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY 10461, USA; Montefiore Einstein Cancer Center, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY 10461, USA.
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7
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de Sena-Tomás C, Aleman AG, Ford C, Varshney A, Yao D, Harrington JK, Saúde L, Ramialison M, Targoff KL. Activation of Nkx2.5 transcriptional program is required for adult myocardial repair. Nat Commun 2022; 13:2970. [PMID: 35624100 PMCID: PMC9142600 DOI: 10.1038/s41467-022-30468-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Accepted: 05/03/2022] [Indexed: 11/09/2022] Open
Abstract
The cardiac developmental network has been associated with myocardial regenerative potential. However, the embryonic signals triggered following injury have yet to be fully elucidated. Nkx2.5 is a key causative transcription factor associated with human congenital heart disease and one of the earliest markers of cardiac progenitors, thus it serves as a promising candidate. Here, we show that cardiac-specific RNA-sequencing studies reveal a disrupted embryonic transcriptional profile in the adult Nkx2.5 loss-of-function myocardium. nkx2.5-/- fish exhibit an impaired ability to recover following ventricular apex amputation with diminished dedifferentiation and proliferation. Complex network analyses illuminate that Nkx2.5 is required to provoke proteolytic pathways necessary for sarcomere disassembly and to mount a proliferative response for cardiomyocyte renewal. Moreover, Nkx2.5 targets embedded in these distinct gene regulatory modules coordinate appropriate, multi-faceted injury responses. Altogether, our findings support a previously unrecognized, Nkx2.5-dependent regenerative circuit that invokes myocardial cell cycle re-entry, proteolysis, and mitochondrial metabolism to ensure effective regeneration in the teleost heart.
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Affiliation(s)
- Carmen de Sena-Tomás
- Division of Cardiology, Department of Pediatrics, College of Physicians & Surgeons, Columbia University, New York, NY, 10032, USA
| | - Angelika G Aleman
- Department of Physiology & Cellular Biophysics, College of Physicians & Surgeons, Columbia University, New York, NY, 10032, USA
| | - Caitlin Ford
- Department of Genetics & Development, College of Physicians & Surgeons, Columbia University, New York, NY, 10032, USA
| | - Akriti Varshney
- Monash Biomedicine Discovery Institute, Monash University, Clayton, VIC, 3800, Australia
- Australian Regenerative Medicine Institute & Systems Biology Institute Australia, Monash University, Clayton, VIC, 3800, Australia
| | - Di Yao
- Division of Cardiology, Department of Pediatrics, College of Physicians & Surgeons, Columbia University, New York, NY, 10032, USA
| | - Jamie K Harrington
- Division of Cardiology, Department of Pediatrics, College of Physicians & Surgeons, Columbia University, New York, NY, 10032, USA
| | - Leonor Saúde
- Instituto de Medicina Molecular, Faculdade de Medicina da Universidade de Lisboa, 1649-028, Lisboa, Portugal
| | - Mirana Ramialison
- Australian Regenerative Medicine Institute & Systems Biology Institute Australia, Monash University, Clayton, VIC, 3800, Australia
- Murdoch Children's Research Institute & Department of Peadiatrics, The University of Melbourne, Parkville, VIC, 3052, Australia
| | - Kimara L Targoff
- Division of Cardiology, Department of Pediatrics, College of Physicians & Surgeons, Columbia University, New York, NY, 10032, USA.
- Columbia Stem Cell Initiative, Columbia University, New York, NY, 10032, USA.
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8
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Peña OA, Lubin A, Hockings C, Rowell J, Jung Y, Hoade Y, Dace P, Valdivia LE, Tuschl K, Böiers C, Virgilio MC, Richardson S, Payne EM. TLR7 ligation augments hematopoiesis in Rps14 (uS11) deficiency via paradoxical suppression of inflammatory signaling. Blood Adv 2021; 5:4112-4124. [PMID: 34432872 PMCID: PMC8945628 DOI: 10.1182/bloodadvances.2020003055] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 03/30/2021] [Indexed: 11/20/2022] Open
Abstract
Myelodysplastic syndrome (MDS) is a hematological malignancy characterized by blood cytopenias and predisposition to acute myeloid leukemia (AML). Therapies for MDS are lacking, particularly those that have an impact in the early stages of disease. We developed a model of MDS in zebrafish with knockout of Rps14, the primary mediator of the anemia associated with del(5q) MDS. These mutant animals display dose- and age-dependent abnormalities in hematopoiesis, culminating in bone marrow failure with dysplastic features. We used Rps14 knockdown to undertake an in vivo small-molecule screening, to identify compounds that ameliorate the MDS phenotype, and we identified imiquimod, an agonist of Toll-like receptor-7 (TLR7) and TLR8. Imiquimod alleviates anemia by promoting hematopoietic stem and progenitor cell expansion and erythroid differentiation, the mechanism of which is dependent on TLR7 ligation and Myd88. TLR7 activation in this setting paradoxically promoted an anti-inflammatory gene signature, indicating cross talk via TLR7 between proinflammatory pathways endogenous to Rps14 loss and the NF-κB pathway. Finally, in highly purified human bone marrow samples from anemic patients, imiquimod led to an increase in erythroid output from myeloerythroid progenitors and common myeloid progenitors. Our findings have both specific implications for the development of targeted therapeutics for del(5q) MDS and wider significance identifying a potential role for TLR7 ligation in modifying anemia.
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Affiliation(s)
- Oscar A. Peña
- Research Department of Haematology, Cancer Institute
| | | | | | | | | | - Yvette Hoade
- Research Department of Haematology, Cancer Institute
| | - Phoebe Dace
- Research Department of Haematology, Cancer Institute
| | - Leonardo E. Valdivia
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
- Center for Integrative Biology, Universidad Mayor, Santiago, Chile
| | - Karin Tuschl
- Department of Cell and Developmental Biology, University College London, London, United Kingdom
- Genetics and Genomic Medicine, UCL Institute of Child Health
| | - Charlotta Böiers
- Research Department of Cancer Biology, Cancer Institute, University College London, London, United Kingdom; and
| | | | - Simon Richardson
- Research Department of Cancer Biology, Cancer Institute, University College London, London, United Kingdom; and
| | - Elspeth M. Payne
- Research Department of Haematology, Cancer Institute
- Clinical Research Facility, National Institute for Health Research/University College London Hospitals (NIHR/UCLH), National Health Service (NHS) Foundation Trust, London, United Kingdom
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9
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Peña OA, Lubin A, Rowell J, Hoade Y, Khokhar N, Lemmik H, Mahony C, Dace P, Umamahesan C, Payne EM. Differential Requirement of Gata2a and Gata2b for Primitive and Definitive Myeloid Development in Zebrafish. Front Cell Dev Biol 2021; 9:708113. [PMID: 34589480 PMCID: PMC8475954 DOI: 10.3389/fcell.2021.708113] [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: 05/11/2021] [Accepted: 08/10/2021] [Indexed: 11/14/2022] Open
Abstract
Germline loss or mutation of one copy of the transcription factor GATA2 in humans leads to a range of clinical phenotypes affecting hematopoietic, lymphatic and vascular systems. GATA2 heterozygous mice show only a limited repertoire of the features observed in humans. Zebrafish have two copies of the Gata2 gene as a result of an additional round of ancestral whole genome duplication. These genes, Gata2a and Gata2b, show distinct but overlapping expression patterns, and between them, highlight a significantly broader range of the phenotypes observed in GATA2 deficient syndromes, than each one alone. In this manuscript, we use mutants for Gata2a and Gata2b to interrogate the effects on hematopoiesis of these two ohnologs, alone and in combination, during development in order to further define the role of GATA2 in developmental hematopoiesis. We define unique roles for each ohnolog at different stages of developmental myelopoiesis and for the emergence of hematopoietic stem and progenitor cells. These effects are not additive in the haploinsufficient state suggesting a redundancy between these two genes in hematopoietic stem and progenitor cells. Rescue studies additionally support that Gata2b can compensate for the effects of Gata2a loss. Finally we show that adults with loss of combined heterozygosity show defects in the myeloid compartment consistent with GATA2 loss in humans. These results build on existing knowledge from other models of GATA2 deficiency and refine our understanding of the early developmental effects of GATA2. In addition, these studies shed light on the complexity and potential structure-function relationships as well as sub-functionalization of Gata2 genes in the zebrafish model.
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Affiliation(s)
- Oscar A. Peña
- Research Department of Haematology, Cancer Institute, University College London, London, United Kingdom
| | - Alexandra Lubin
- Research Department of Haematology, Cancer Institute, University College London, London, United Kingdom
| | - Jasmine Rowell
- Research Department of Haematology, Cancer Institute, University College London, London, United Kingdom
| | - Yvette Hoade
- Research Department of Haematology, Cancer Institute, University College London, London, United Kingdom
| | - Noreen Khokhar
- Research Department of Haematology, Cancer Institute, University College London, London, United Kingdom
| | - Hanna Lemmik
- Research Department of Haematology, Cancer Institute, University College London, London, United Kingdom
| | - Christopher Mahony
- Department of Pathology and Immunology, School of Medicine, University of Geneva, Geneva, Switzerland
| | - Phoebe Dace
- Research Department of Haematology, Cancer Institute, University College London, London, United Kingdom
| | - Chianna Umamahesan
- Research Department of Haematology, Cancer Institute, University College London, London, United Kingdom
| | - Elspeth M. Payne
- Research Department of Haematology, Cancer Institute, University College London, London, United Kingdom
- National Institute for Health Research (NIHR)/UCLH Clinical Research Facility, University College London Hospitals NHS Foundation Trust, London, United Kingdom
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10
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Gioacchino E, Koyunlar C, Zink J, de Looper H, de Jong M, Dobrzycki T, Mahony CB, Hoogenboezem R, Bosch D, van Strien PMH, van Royen ME, French PJ, Bindels E, Gussinklo KJ, Monteiro R, Touw IP, de Pater E. Essential role for Gata2 in modulating lineage output from hematopoietic stem cells in zebrafish. Blood Adv 2021; 5:2687-2700. [PMID: 34170285 PMCID: PMC8288679 DOI: 10.1182/bloodadvances.2020002993] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 02/22/2021] [Indexed: 01/22/2023] Open
Abstract
The differentiation of hematopoietic stem cells (HSCs) is tightly controlled to ensure a proper balance between myeloid and lymphoid cell output. GATA2 is a pivotal hematopoietic transcription factor required for generation and maintenance of HSCs. GATA2 is expressed throughout development, but because of early embryonic lethality in mice, its role during adult hematopoiesis is incompletely understood. Zebrafish contains 2 orthologs of GATA2: Gata2a and Gata2b, which are expressed in different cell types. We show that the mammalian functions of GATA2 are split between these orthologs. Gata2b-deficient zebrafish have a reduction in embryonic definitive hematopoietic stem and progenitor cell (HSPC) numbers, but are viable. This allows us to uniquely study the role of GATA2 in adult hematopoiesis. gata2b mutants have impaired myeloid lineage differentiation. Interestingly, this defect arises not in granulocyte-monocyte progenitors, but in HSPCs. Gata2b-deficient HSPCs showed impaired progression of the myeloid transcriptional program, concomitant with increased coexpression of lymphoid genes. This resulted in a decrease in myeloid-programmed progenitors and a relative increase in lymphoid-programmed progenitors. This shift in the lineage output could function as an escape mechanism to avoid a block in lineage differentiation. Our study helps to deconstruct the functions of GATA2 during hematopoiesis and shows that lineage differentiation flows toward a lymphoid lineage in the absence of Gata2b.
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Affiliation(s)
| | - Cansu Koyunlar
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
| | - Joke Zink
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
| | - Hans de Looper
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
- Cancer Genome Editing Center, Erasmus MC, Rotterdam, The Netherlands
| | - Madelon de Jong
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
| | - Tomasz Dobrzycki
- Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
| | - Christopher B. Mahony
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, United Kingdom; and
| | | | - Dennis Bosch
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
| | | | - Martin E. van Royen
- Department of Pathology, Cancer Treatment Screening Facility, Erasmus MC Optical Imaging Centre, and
| | - Pim J. French
- Department of Neurology, Cancer Treatment Screening Facility, Erasmus MC, Rotterdam, The Netherlands
| | - Eric Bindels
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
| | | | - Rui Monteiro
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, United Kingdom; and
| | - Ivo P. Touw
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
| | - Emma de Pater
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
- Cancer Genome Editing Center, Erasmus MC, Rotterdam, The Netherlands
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11
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Weinreb JT, Ghazale N, Pradhan K, Gupta V, Potts KS, Tricomi B, Daniels NJ, Padgett RA, De Oliveira S, Verma A, Bowman TV. Excessive R-loops trigger an inflammatory cascade leading to increased HSPC production. Dev Cell 2021; 56:627-640.e5. [PMID: 33651979 DOI: 10.1016/j.devcel.2021.02.006] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 12/01/2020] [Accepted: 02/03/2021] [Indexed: 02/07/2023]
Abstract
Hematopoietic stem and progenitor cells (HSPCs) arise during embryonic development and are essential for sustaining the blood and immune systems throughout life. Tight regulation of HSPC numbers is critical for hematopoietic homeostasis. Here, we identified DEAD-box helicase 41 (Ddx41) as a gatekeeper of HSPC production. Using zebrafish ddx41 mutants, we unveiled a critical role for this helicase in regulating HSPC production at the endothelial-to-hematopoietic transition. We determined that Ddx41 suppresses the accumulation of R-loops, nucleic acid structures consisting of RNA:DNA hybrids and ssDNAs whose equilibrium is essential for cellular fitness. Excess R-loop levels in ddx41 mutants triggered the cGAS-STING inflammatory pathway leading to increased numbers of hemogenic endothelium and HSPCs. Elevated R-loop accumulation and inflammatory signaling were observed in human cells with decreased DDX41, suggesting possible conservation of mechanism. These findings delineate that precise regulation of R-loop levels during development is critical for limiting cGAS-STING activity and HSPC numbers.
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Affiliation(s)
- Joshua T Weinreb
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA; Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Noura Ghazale
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA; Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Kith Pradhan
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA; Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Varun Gupta
- Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Kathryn S Potts
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA; Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Brad Tricomi
- Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY, USA; Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Noah J Daniels
- Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Richard A Padgett
- Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Sofia De Oliveira
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA; Department of Medicine (Hepatology) and Marion Bessin Liver Research Center, Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY, USA
| | - Amit Verma
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA; Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY, USA; Department of Medicine (Oncology), Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY, USA
| | - Teresa V Bowman
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA; Gottesman Institute for Stem Cell Biology and Regenerative Medicine, Albert Einstein College of Medicine, Bronx, NY, USA; Department of Medicine (Oncology), Albert Einstein College of Medicine and Montefiore Medical Center, Bronx, NY, USA.
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12
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Ferrero G, Miserocchi M, Di Ruggiero E, Wittamer V. A c sf1rb mutation uncouples two waves of microglia development in zebrafish. Development 2021; 148:dev.194241. [PMID: 33298459 DOI: 10.1242/dev.194241] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 12/02/2020] [Indexed: 12/15/2022]
Abstract
In vertebrates, the ontogeny of microglia, the resident macrophages of the central nervous system, initiates early during development from primitive macrophages. Although murine embryonic microglia then persist through life, in zebrafish these cells are transient, as they are fully replaced by an adult population originating from larval hematopoietic stem cell (HSC)-derived progenitors. Colony-stimulating factor 1 receptor (Csf1r) is a fundamental regulator of microglia ontogeny in vertebrates, including zebrafish, which possess two paralogous genes: csf1ra and csf1rb Although previous work has shown that mutation in both genes completely abrogates microglia development, the specific contribution of each paralog remains largely unknown. Here, using a fate-mapping strategy to discriminate between the two microglial waves, we uncover non-overlapping roles for csf1ra and csf1rb in hematopoiesis, and identified csf1rb as an essential regulator of adult microglia development. Notably, we demonstrate that csf1rb positively regulates HSC-derived myelopoiesis, resulting in macrophage deficiency, including microglia, in adult mutant animals. Overall, this study contributes to new insights into evolutionary aspects of Csf1r signaling and provides an unprecedented framework for the functional dissection of embryonic versus adult microglia in vivo.
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Affiliation(s)
- Giuliano Ferrero
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire (IRIBHM), Université Libre de Bruxelles (ULB), Brussels 1070, Belgium.,ULB Institute of Neuroscience (UNI), Université Libre de Bruxelles (ULB), Brussels 1070, Belgium
| | - Magali Miserocchi
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire (IRIBHM), Université Libre de Bruxelles (ULB), Brussels 1070, Belgium.,ULB Institute of Neuroscience (UNI), Université Libre de Bruxelles (ULB), Brussels 1070, Belgium
| | - Elodie Di Ruggiero
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire (IRIBHM), Université Libre de Bruxelles (ULB), Brussels 1070, Belgium
| | - Valérie Wittamer
- Institut de Recherche Interdisciplinaire en Biologie Humaine et Moléculaire (IRIBHM), Université Libre de Bruxelles (ULB), Brussels 1070, Belgium .,ULB Institute of Neuroscience (UNI), Université Libre de Bruxelles (ULB), Brussels 1070, Belgium.,WELBIO, Université Libre de Bruxelles (ULB), Brussels 1070, Belgium
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13
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Dobrzycki T, Mahony CB, Krecsmarik M, Koyunlar C, Rispoli R, Peulen-Zink J, Gussinklo K, Fedlaoui B, de Pater E, Patient R, Monteiro R. Deletion of a conserved Gata2 enhancer impairs haemogenic endothelium programming and adult Zebrafish haematopoiesis. Commun Biol 2020; 3:71. [PMID: 32054973 PMCID: PMC7018942 DOI: 10.1038/s42003-020-0798-3] [Citation(s) in RCA: 19] [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: 04/25/2019] [Accepted: 01/28/2020] [Indexed: 12/13/2022] Open
Abstract
Gata2 is a key transcription factor required to generate Haematopoietic Stem and Progenitor Cells (HSPCs) from haemogenic endothelium (HE); misexpression of Gata2 leads to haematopoietic disorders. Here we deleted a conserved enhancer (i4 enhancer) driving pan-endothelial expression of the zebrafish gata2a and showed that Gata2a is required for HE programming by regulating expression of runx1 and of the second Gata2 orthologue, gata2b. By 5 days, homozygous gata2aΔi4/Δi4 larvae showed normal numbers of HSPCs, a recovery mediated by Notch signalling driving gata2b and runx1 expression in HE. However, gata2aΔi4/Δi4 adults showed oedema, susceptibility to infections and marrow hypo-cellularity, consistent with bone marrow failure found in GATA2 deficiency syndromes. Thus, gata2a expression driven by the i4 enhancer is required for correct HE programming in embryos and maintenance of steady-state haematopoietic stem cell output in the adult. These enhancer mutants will be useful in exploring further the pathophysiology of GATA2-related deficiencies in vivo.
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Affiliation(s)
- Tomasz Dobrzycki
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
| | - Christopher B Mahony
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Monika Krecsmarik
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
- BHF Centre of Research Excellence, Oxford, UK
| | - Cansu Koyunlar
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
| | - Rossella Rispoli
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
- Division of Genetics and Molecular Medicine, NIHR Biomedical Research Centre, Guy's and St Thomas' NHS Foundation Trust and King's College London, London, UK
| | - Joke Peulen-Zink
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
| | | | - Bakhta Fedlaoui
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Emma de Pater
- Department of Hematology, Erasmus MC, Rotterdam, The Netherlands
| | - Roger Patient
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
- BHF Centre of Research Excellence, Oxford, UK
| | - Rui Monteiro
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK.
- Institute of Cancer and Genomic Sciences, College of Medical and Dental Sciences, University of Birmingham, Birmingham, B15 2TT, UK.
- BHF Centre of Research Excellence, Oxford, UK.
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14
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Lundin V, Sugden WW, Theodore LN, Sousa PM, Han A, Chou S, Wrighton PJ, Cox AG, Ingber DE, Goessling W, Daley GQ, North TE. YAP Regulates Hematopoietic Stem Cell Formation in Response to the Biomechanical Forces of Blood Flow. Dev Cell 2020; 52:446-460.e5. [PMID: 32032546 DOI: 10.1016/j.devcel.2020.01.006] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 10/16/2019] [Accepted: 01/07/2020] [Indexed: 12/27/2022]
Abstract
Hematopoietic stem and progenitor cells (HSPCs), first specified from hemogenic endothelium (HE) in the ventral dorsal aorta (VDA), support lifelong hematopoiesis. Their de novo production promises significant therapeutic value; however, current in vitro approaches cannot efficiently generate multipotent long-lived HSPCs. Presuming this reflects a lack of extrinsic cues normally impacting the VDA, we devised a human dorsal aorta-on-a-chip platform that identified Yes-activated protein (YAP) as a cyclic stretch-induced regulator of HSPC formation. In the zebrafish VDA, inducible Yap overexpression significantly increased runx1 expression in vivo and the number of CD41+ HSPCs downstream of HE specification. Endogenous Yap activation by lats1/2 knockdown or Rho-GTPase stimulation mimicked Yap overexpression and induced HSPCs in embryos lacking blood flow. Notably, in static human induced pluripotent stem cell (iPSC)-derived HE culture, compound-mediated YAP activation enhanced RUNX1 levels and hematopoietic colony-forming potential. Together, our findings reveal a potent impact of hemodynamic Rho-YAP mechanotransduction on HE fate, relevant to de novo human HSPC production.
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Affiliation(s)
- Vanessa Lundin
- Stem Cell Program, Division of Pediatric Hematology and Oncology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA
| | - Wade W Sugden
- Stem Cell Program, Division of Pediatric Hematology and Oncology, Boston Children's Hospital, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Lindsay N Theodore
- Stem Cell Program, Division of Pediatric Hematology and Oncology, Boston Children's Hospital, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Patricia M Sousa
- Stem Cell Program, Division of Pediatric Hematology and Oncology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Areum Han
- Stem Cell Program, Division of Pediatric Hematology and Oncology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Stephanie Chou
- Stem Cell Program, Division of Pediatric Hematology and Oncology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA
| | - Paul J Wrighton
- Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Department of Medicine, Division of Genetics, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Andrew G Cox
- Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Department of Medicine, Division of Genetics, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Donald E Ingber
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA 02115, USA; Vascular Biology Program, Department of Surgery, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA; Harvard John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA
| | - Wolfram Goessling
- Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Department of Medicine, Division of Genetics, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA; Dana-Farber Cancer Institute, Boston, MA 02115, USA; Harvard-MIT Division of Health Sciences and Technology, Harvard Medical School, Boston, MA 02115, USA
| | - George Q Daley
- Stem Cell Program, Division of Pediatric Hematology and Oncology, Boston Children's Hospital, Boston, MA 02115, USA; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA; Dana-Farber Cancer Institute, Boston, MA 02115, USA
| | - Trista E North
- Stem Cell Program, Division of Pediatric Hematology and Oncology, Boston Children's Hospital, Boston, MA 02115, USA; Harvard Stem Cell Institute, Cambridge, MA 02138, USA.
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15
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Bonkhofer F, Rispoli R, Pinheiro P, Krecsmarik M, Schneider-Swales J, Tsang IHC, de Bruijn M, Monteiro R, Peterkin T, Patient R. Blood stem cell-forming haemogenic endothelium in zebrafish derives from arterial endothelium. Nat Commun 2019; 10:3577. [PMID: 31395869 PMCID: PMC6687740 DOI: 10.1038/s41467-019-11423-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 07/10/2019] [Indexed: 02/07/2023] Open
Abstract
Haematopoietic stem cells are generated from the haemogenic endothelium (HE) located in the floor of the dorsal aorta (DA). Despite being integral to arteries, it is controversial whether HE and arterial endothelium share a common lineage. Here, we present a transgenic zebrafish runx1 reporter line to isolate HE and aortic roof endothelium (ARE)s, excluding non-aortic endothelium. Transcriptomic analysis of these populations identifies Runx1-regulated genes and shows that HE initially expresses arterial markers at similar levels to ARE. Furthermore, runx1 expression depends on prior arterial programming by the Notch ligand dll4. Runx1−/− mutants fail to downregulate arterial genes in the HE, which remains integrated within the DA, suggesting that Runx1 represses the pre-existing arterial programme in HE to allow progression towards the haematopoietic fate. These findings strongly suggest that, in zebrafish, aortic endothelium is a precursor to HE, with potential implications for pluripotent stem cell differentiation protocols for the generation of transplantable HSCs. HSCs emerge from haemogenic endothelium (HE) in the dorsal aorta but whether these tissues share a common lineage is unclear. Here, the authors use a zebrafish runx1 reporter to show that HE maintains an arterial gene expression profile in the absence of Runx1, suggesting the aortic endothelium as a precursor of HE.
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Affiliation(s)
- Florian Bonkhofer
- Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
| | - Rossella Rispoli
- Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK.,Division of Genetics and Molecular Medicine, NIHR Biomedical Research Centre, Guy's and St Thomas' NHS Foundation Trust and King's College London, London, UK
| | - Philip Pinheiro
- Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
| | - Monika Krecsmarik
- Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK.,BHF Centre of Research Excellence, Oxford, UK
| | - Janina Schneider-Swales
- Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
| | - Ingrid Ho Ching Tsang
- Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
| | - Marella de Bruijn
- Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
| | - Rui Monteiro
- Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK. .,BHF Centre of Research Excellence, Oxford, UK. .,Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, B15 2TT, UK.
| | - Tessa Peterkin
- Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK
| | - Roger Patient
- Molecular Haematology Unit, Weatherall Institute of Molecular Medicine, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DS, UK. .,BHF Centre of Research Excellence, Oxford, UK.
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