Hematopoietic stem cells (HSCs) form the base of the hematopoietic hierarchy and can give rise to each of the blood lineages present during a vertebrate’s lifetime. Gene programs and signaling networks regulating HSC development and function are highly evolutionarily conserved, with dysregulation resulting in blood disorders and malignancies. HSCs are therapeutically valuable for the treatment of hematologic disease, but are in limited supply and currently cannot be effectively expanded or produced in vitro. My research utilizes genetic methods and chemical biology approaches in the zebrafish embryo to identify and characterize pathways regulating HSC induction, self-renewal and lineage commitment in vivo. To demonstrate regulatory conservation and translational application, we employ in vivo functional analyses in adult zebrafish and mice, as well as human in vitro hematopoietic differentiation assays. Through these efforts, we have uncovered a series of extrinsic or environmental cues that influence the spatio-temporal development, expansion and maintenance of HSCs across vertebrates, which has direct translational relevance for the de novo derivation of HSCs for therapeutic application.
Research Background
Dr. Trista E. North is a Professor of Pediatrics of Pediatrics at Harvard Medical School, principle investigator in the Stem Cell Program and Department of Hematology/Oncology at Boston Children’s Hospital and Co-Director of the Developmental and Regenerative Biology graduate program. Dr. North received her BA from Bowdoin College in 1996, and PhD from Dartmouth College in 2002. Following completion of her postdoctoral research at Boston Children’s Hospital, Dr. North established her independent research laboratory in 2008 with a focus on Developmental Hematopoiesis. She is an active faculty member in the Biological and Biomedical Sciences Graduate Program at HMS, the Harvard Stem Cell Institute, and Dana-Farber/Harvard Cancer Center Leukemia Program. Dr. North currently serves as Treasurer on the Executive Board of the Zebrafish Disease Models Society; she is also a member of the Stem Cells and Regenerative Medicine Scientific Committee of the American Society of Hematology, and Nominating Committee for the International Society of Experimental Hematology.
Publications
Maturation and persistence of CAR T cells derived from human pluripotent stem cells via chemical inhibition of G9a/GLP. Cell Stem Cell. 2025 Jan 15. View Abstract
Maturation and persistence of CAR T cells derived from human pluripotent stem cells via chemical inhibition of G9a/GLP. Cell Stem Cell. 2025 Jan 02; 32(1):71-85.e5. View Abstract
Bnip3lb-driven mitophagy sustains expansion of the embryonic hematopoietic stem cell pool. bioRxiv. 2024 Sep 23. View Abstract
Correction: Cannabinoid receptor signaling regulates liver development and metabolism. Development. 2024 Aug 01; 151(15). View Abstract
A multistep computational approach reveals a neuro-mesenchymal cell population in the embryonic hematopoietic stem cell niche. Development. 2024 Apr 01; 151(7). View Abstract
Development of functional resident macrophages in human pluripotent stem cell-derived colonic organoids and human fetal colon. Cell Stem Cell. 2023 11 02; 30(11):1434-1451.e9. View Abstract
SARS-CoV-2 viral liver aggregates and scarce parenchymal infection implicate systemic disease as a driver of abnormal liver function. Hepatol Commun. 2023 11 01; 7(11). View Abstract
Structural basis for inactivation of PRC2 by G-quadruplex RNA. Science. 2023 09 22; 381(6664):1331-1337. View Abstract
EZH1 repression generates mature iPSC-derived CAR T cells with enhanced antitumor activity. Cell Stem Cell. 2022 08 04; 29(8):1181-1196.e6. View Abstract
Hypoxic, glycolytic metabolism is a vulnerability of B-acute lymphoblastic leukemia-initiating cells. Cell Rep. 2022 04 26; 39(4):110752. View Abstract
CellComm infers cellular crosstalk that drives haematopoietic stem and progenitor cell development. Nat Cell Biol. 2022 04; 24(4):579-589. View Abstract
Developmental maturation of the hematopoietic system controlled by a Lin28b-let-7-Cbx2 axis. Cell Rep. 2022 04 05; 39(1):110587. View Abstract
Making Blood from the Vessel: Extrinsic and Environmental Cues Guiding the Endothelial-to-Hematopoietic Transition. Life (Basel). 2021 Sep 29; 11(10). View Abstract
Sequential regulation of hemogenic fate and hematopoietic stem and progenitor cell formation from arterial endothelium by Ezh1/2. Stem Cell Reports. 2021 07 13; 16(7):1718-1734. View Abstract
Ddx41 loss R-loops in cGAS to fuel inflammatory HSPC production. Dev Cell. 2021 03 08; 56(5):571-572. View Abstract
Estrogen Acts Through Estrogen Receptor 2b to Regulate Hepatobiliary Fate During Vertebrate Development. Hepatology. 2020 11; 72(5):1786-1799. View Abstract
An induced pluripotent stem cell model of Fanconi anemia reveals mechanisms of p53-driven progenitor cell differentiation. Blood Adv. 2020 10 13; 4(19):4679-4692. View Abstract
Metabolic Regulation of Inflammasome Activity Controls Embryonic Hematopoietic Stem and Progenitor Cell Production. Dev Cell. 2020 10 26; 55(2):133-149.e6. View Abstract
Transcriptome Dynamics of Hematopoietic Stem Cell Formation Revealed Using a Combinatorial Runx1 and Ly6a Reporter System. Stem Cell Reports. 2020 05 12; 14(5):956-971. View Abstract
YAP Regulates Hematopoietic Stem Cell Formation in Response to the Biomechanical Forces of Blood Flow. Dev Cell. 2020 02 24; 52(4):446-460.e5. View Abstract
Author Correction: A systems biology pipeline identifies regulatory networks for stem cell engineering. Nat Biotechnol. 2019 Aug; 37(8):962. View Abstract
A systems biology pipeline identifies regulatory networks for stem cell engineering. Nat Biotechnol. 2019 07; 37(7):810-818. View Abstract
The developmental stage of the hematopoietic niche regulates lineage in MLL-rearranged leukemia. J Exp Med. 2019 03 04; 216(3):527-538. View Abstract
Estrogen Activation of G-Protein-Coupled Estrogen Receptor 1 Regulates Phosphoinositide 3-Kinase and mTOR Signaling to Promote Liver Growth in Zebrafish and Proliferation of Human Hepatocytes. Gastroenterology. 2019 05; 156(6):1788-1804.e13. View Abstract
Reconstruction of complex single-cell trajectories using CellRouter. Nat Commun. 2018 03 01; 9(1):892. View Abstract
Regulation of embryonic haematopoietic multipotency by EZH1. Nature. 2018 01 25; 553(7689):506-510. View Abstract
A tool compound targeting the core binding factor Runt domain to disrupt binding to CBFß in leukemic cells. Leuk Lymphoma. 2018 09; 59(9):2188-2200. View Abstract
Distinct Roles for Matrix Metalloproteinases 2 and 9 in Embryonic Hematopoietic Stem Cell Emergence, Migration, and Niche Colonization. Stem Cell Reports. 2017 05 09; 8(5):1226-1241. View Abstract
Netting Novel Regulators of Hematopoiesis and Hematologic Malignancies in Zebrafish. Curr Top Dev Biol. 2017; 124:125-160. View Abstract
Haematopoietic stem cells show their true colours. Nat Cell Biol. 2016 Dec 23; 19(1):10-12. View Abstract
Hematopoietic stem cell development: Using the zebrafish to identify extrinsic and intrinsic mechanisms regulating hematopoiesis. Methods Cell Biol. 2017; 138:165-192. View Abstract
HIF1a-induced PDGFRß signaling promotes developmental HSC production via IL-6 activation. Exp Hematol. 2017 Feb; 46:83-95.e6. View Abstract
Evi1 regulates Notch activation to induce zebrafish hematopoietic stem cell emergence. EMBO J. 2016 11 02; 35(21):2315-2331. View Abstract
Iterative use of nuclear receptor Nr5a2 regulates multiple stages of liver and pancreas development. Dev Biol. 2016 10 01; 418(1):108-123. View Abstract
Inflammatory signals in HSPC development and homeostasis: Too much of a good thing? Exp Hematol. 2016 10; 44(10):908-12. View Abstract
The Central Nervous System Regulates Embryonic HSPC Production via Stress-Responsive Glucocorticoid Receptor Signaling. Cell Stem Cell. 2016 09 01; 19(3):370-82. View Abstract
Single-cell transcriptional analysis of normal, aberrant, and malignant hematopoiesis in zebrafish. J Exp Med. 2016 05 30; 213(6):979-92. View Abstract
EnaBILEing Growth in the Fetal Liver. Cell Stem Cell. 2016 Apr 07; 18(4):427-8. View Abstract
Endothelial-to-hematopoietic transition: Notch-ing vessels into blood. Ann N Y Acad Sci. 2016 04; 1370(1):97-108. View Abstract
Cannabinoid receptor signaling regulates liver development and metabolism. Development. 2016 Feb 15; 143(4):609-22. View Abstract
Enumerating Hematopoietic Stem and Progenitor Cells in Zebrafish Embryos. Methods Mol Biol. 2016; 1451:191-206. View Abstract
Accumulation of the Vitamin D Precursor Cholecalciferol Antagonizes Hedgehog Signaling to Impair Hemogenic Endothelium Formation. Stem Cell Reports. 2015 Oct 13; 5(4):471-9. View Abstract
Cannabinoid Receptor-2 Regulates Embryonic Hematopoietic Stem Cell Development via Prostaglandin E2 and P-Selectin Activity. Stem Cells. 2015 Aug; 33(8):2596-612. View Abstract
Inflammatory signaling regulates embryonic hematopoietic stem and progenitor cell production. Genes Dev. 2014 Dec 01; 28(23):2597-612. View Abstract
Repairing quite swimmingly: advances in regenerative medicine using zebrafish. Dis Model Mech. 2014 Jul; 7(7):769-76. View Abstract
Estrogen defines the dorsal-ventral limit of VEGF regulation to specify the location of the hemogenic endothelial niche. Dev Cell. 2014 May 27; 29(4):437-53. View Abstract
Oceans of opportunity: exploring vertebrate hematopoiesis in zebrafish. Exp Hematol. 2014 Aug; 42(8):684-96. View Abstract
Prostaglandin E2 regulates liver versus pancreas cell-fate decisions and endodermal outgrowth. Dev Cell. 2014 Feb 24; 28(4):423-37. View Abstract
S-nitrosothiol signaling regulates liver development and improves outcome following toxic liver injury. Cell Rep. 2014 Jan 16; 6(1):56-69. View Abstract
Functional validation of GWAS gene candidates for abnormal liver function during zebrafish liver development. Dis Model Mech. 2013 Sep; 6(5):1271-8. View Abstract
Identification of small molecules for human hepatocyte expansion and iPS differentiation. Nat Chem Biol. 2013 Aug; 9(8):514-20. View Abstract
Glucose metabolism impacts the spatiotemporal onset and magnitude of HSC induction in vivo. Blood. 2013 Mar 28; 121(13):2483-93. View Abstract
Rargb regulates organ laterality in a zebrafish model of right atrial isomerism. Dev Biol. 2012 Dec 15; 372(2):178-89. View Abstract
Teleost growth factor independence (gfi) genes differentially regulate successive waves of hematopoiesis. Dev Biol. 2013 Jan 15; 373(2):431-41. View Abstract
SCF(ß-TRCP) suppresses angiogenesis and thyroid cancer cell migration by promoting ubiquitination and destruction of VEGF receptor 2. J Exp Med. 2012 Jul 02; 209(7):1289-307. View Abstract
Mutation mapping and identification by whole-genome sequencing. Genome Res. 2012 Aug; 22(8):1541-8. View Abstract
Hematopoietic stem cell development: using the zebrafish to identify the signaling networks and physical forces regulating hematopoiesis. Methods Cell Biol. 2011; 105:117-36. View Abstract
PGE2-regulated wnt signaling and N-acetylcysteine are synergistically hepatoprotective in zebrafish acetaminophen injury. Proc Natl Acad Sci U S A. 2010 Oct 05; 107(40):17315-20. View Abstract
The Wnt/beta-catenin pathway is required for the development of leukemia stem cells in AML. Science. 2010 Mar 26; 327(5973):1650-3. View Abstract
Previews. NOTCHing an arrow at cord blood: translating stem cell knowledge into clinical practice. Cell Stem Cell. 2010 Mar 05; 6(3):186-7. View Abstract
Hematopoietic stem cell development is dependent on blood flow. Cell. 2009 May 15; 137(4):736-48. View Abstract
Topoisomerase II alpha is required for embryonic development and liver regeneration in zebrafish. Mol Cell Biol. 2009 Jul; 29(13):3746-53. View Abstract
Genetic interaction of PGE2 and Wnt signaling regulates developmental specification of stem cells and regeneration. Cell. 2009 Mar 20; 136(6):1136-47. View Abstract
Molecular association between beta-catenin degradation complex and Rac guanine exchange factor DOCK4 is essential for Wnt/beta-catenin signaling. Oncogene. 2008 Oct 02; 27(44):5845-55. View Abstract
APC mutant zebrafish uncover a changing temporal requirement for wnt signaling in liver development. Dev Biol. 2008 Aug 01; 320(1):161-74. View Abstract
Prostaglandin E2: making more of your marrow. Cell Cycle. 2007 Dec 15; 6(24):3054-7. View Abstract
Ultrasound biomicroscopy permits in vivo characterization of zebrafish liver tumors. Nat Methods. 2007 Jul; 4(7):551-3. View Abstract
New waves of discovery: modeling cancer in zebrafish. J Clin Oncol. 2007 Jun 10; 25(17):2473-9. View Abstract
Runx1 is expressed in adult mouse hematopoietic stem cells and differentiating myeloid and lymphoid cells, but not in maturing erythroid cells. Stem Cells. 2004; 22(2):158-68. View Abstract
Modeling human hematopoietic and cardiovascular diseases in zebrafish. Dev Dyn. 2003 Nov; 228(3):568-83. View Abstract
Runx1 expression marks long-term repopulating hematopoietic stem cells in the midgestation mouse embryo. Immunity. 2002 May; 16(5):661-72. View Abstract
Cbfa2 is required for the formation of intra-aortic hematopoietic clusters. Development. 1999 Jun; 126(11):2563-75. View Abstract
Core-binding factor: a central player in hematopoiesis and leukemia. Cancer Res. 1999 Apr 01; 59(7 Suppl):1789s-1793s. View Abstract