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Liu Y, Li Q, Song L, Gong C, Tang S, Budinich KA, Vanderbeck A, Mathias KM, Wertheim GB, Nguyen SC, Outen R, Joyce EF, Maillard I, Wan L. Condensate-promoting ENL mutation drives tumorigenesis in vivo through dynamic regulation of histone modifications and gene expression. Cancer Discov 2024:743214. [PMID: 38655899 DOI: 10.1158/2159-8290.cd-23-0876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 02/21/2024] [Accepted: 04/22/2024] [Indexed: 04/26/2024]
Abstract
Gain-of-function mutations in the histone acetylation 'reader' ENL, found in AML and Wilms tumor, are known to drive condensate formation and gene activation in cellular systems. However, their role in tumorigenesis remains unclear. Using a conditional knock-in mouse model, we show that mutant ENL perturbs normal hematopoiesis, induces aberrant expansion of myeloid progenitors, and triggers rapid onset of aggressive AML. Mutant ENL alters developmental and inflammatory gene programs in part by remodeling histone modifications. Mutant ENL forms condensates in hematopoietic stem/progenitor cells at key leukemogenic genes, and disrupting condensate formation via mutagenesis impairs its chromatin and oncogenic function. Moreover, treatment with an acetyl-binding inhibitor of mutant ENL displaces these condensates from target loci, inhibits mutant ENL-induced chromatin changes, and delays AML initiation and progression in vivo. Our study elucidates the function of ENL mutations in chromatin regulation and tumorigenesis, and demonstrates the potential of targeting pathogenic condensates in cancer treatment.
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Affiliation(s)
- Yiman Liu
- Raymond and Ruth Perelman School of Medicine at the University of Pennsylvania, United States
| | - Qinglan Li
- Department of Cancer Biology, University of Pennsylvania; Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, Philadelphia, United States
| | - Lele Song
- University of Pennsylvania, United States
| | | | - Sylvia Tang
- Department of Cancer Biology, University of Pennsylvania; Abramson Family Cancer Research Institute, Perelman School of Medicine, University of Pennsylvania, United States
| | | | | | | | - Gerald B Wertheim
- Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | | | | | | | - Ivan Maillard
- University of Pennsylvania, Philadelphia, PA, United States
| | - Liling Wan
- University of Pennsylvania, Philadelphia, PA, United States
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Tkachev V, Vanderbeck A, Perkey E, Furlan SN, McGuckin C, Atria DG, Gerdemann U, Rui X, Lane J, Hunt DJ, Zheng H, Colonna L, Hoffman M, Yu A, Outen R, Kelly S, Allman A, Koch U, Radtke F, Ludewig B, Burbach B, Shimizu Y, Panoskaltsis-Mortari A, Chen G, Carpenter SM, Harari O, Kuhnert F, Thurston G, Blazar BR, Kean LS, Maillard I. Notch signaling drives intestinal graft-versus-host disease in mice and nonhuman primates. Sci Transl Med 2023; 15:eadd1175. [PMID: 37379368 PMCID: PMC10896076 DOI: 10.1126/scitranslmed.add1175] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 05/31/2023] [Indexed: 06/30/2023]
Abstract
Notch signaling promotes T cell pathogenicity and graft-versus-host disease (GVHD) after allogeneic hematopoietic cell transplantation (allo-HCT) in mice, with a dominant role for the Delta-like Notch ligand DLL4. To assess whether Notch's effects are evolutionarily conserved and to identify the mechanisms of Notch signaling inhibition, we studied antibody-mediated DLL4 blockade in a nonhuman primate (NHP) model similar to human allo-HCT. Short-term DLL4 blockade improved posttransplant survival with durable protection from gastrointestinal GVHD in particular. Unlike prior immunosuppressive strategies tested in the NHP GVHD model, anti-DLL4 interfered with a T cell transcriptional program associated with intestinal infiltration. In cross-species investigations, Notch inhibition decreased surface abundance of the gut-homing integrin α4β7 in conventional T cells while preserving α4β7 in regulatory T cells, with findings suggesting increased β1 competition for α4 binding in conventional T cells. Secondary lymphoid organ fibroblastic reticular cells emerged as the critical cellular source of Delta-like Notch ligands for Notch-mediated up-regulation of α4β7 integrin in T cells after allo-HCT. Together, DLL4-Notch blockade decreased effector T cell infiltration into the gut, with increased regulatory to conventional T cell ratios early after allo-HCT. Our results identify a conserved, biologically unique, and targetable role of DLL4-Notch signaling in intestinal GVHD.
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Affiliation(s)
- Victor Tkachev
- Massachusetts General Hospital, Center for Transplantation Sciences, Boston, MA 02114
- Division of Hematology/Oncology, Boston Children’s Hospital and Department of Pediatric Oncology, Dana Farber Cancer Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115
| | - Ashley Vanderbeck
- Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
- Immunology Graduate Group and Veterinary Medical Scientist Training Program, University of Pennsylvania, Philadelphia, PA 19104
| | - Eric Perkey
- Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
- Graduate Program in Cellular and Molecular Biology, University of Michigan, Ann Arbor, MI 48109
| | - Scott N. Furlan
- Clinical Research Division, Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA 98109
| | - Connor McGuckin
- Division of Hematology/Oncology, Boston Children’s Hospital and Department of Pediatric Oncology, Dana Farber Cancer Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115
| | - Daniela Gómez Atria
- Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Ulrike Gerdemann
- Division of Hematology/Oncology, Boston Children’s Hospital and Department of Pediatric Oncology, Dana Farber Cancer Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115
| | - Xianliang Rui
- Division of Hematology/Oncology, Boston Children’s Hospital and Department of Pediatric Oncology, Dana Farber Cancer Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115
| | - Jennifer Lane
- Division of Hematology/Oncology, Boston Children’s Hospital and Department of Pediatric Oncology, Dana Farber Cancer Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115
| | - Daniel J. Hunt
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, University of Washington, Seattle, WA 98101
| | - Hengqi Zheng
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, University of Washington, Seattle, WA 98101
| | - Lucrezia Colonna
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, University of Washington, Seattle, WA 98101
| | - Michelle Hoffman
- Clinical Research Division, Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA 98109
| | - Alison Yu
- Ben Towne Center for Childhood Cancer Research, Seattle Children’s Research Institute, University of Washington, Seattle, WA 98101
| | - Riley Outen
- Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Samantha Kelly
- Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Anneka Allman
- Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
| | - Ute Koch
- EPFL, 1015 Lausanne, Switzerland
| | | | - Burkhard Ludewig
- Medical Research Center, Kantonsspital St. Gallen, 9007 St. Gallen, Switzerland
| | - Brandon Burbach
- Department of Laboratory Medicine and Pathology, Center for Immunology, Masonic Cancer Center, University of Minnesota School of Medicine, Minneapolis, MN 55455
| | - Yoji Shimizu
- Department of Laboratory Medicine and Pathology, Center for Immunology, Masonic Cancer Center, University of Minnesota School of Medicine, Minneapolis, MN 55455
| | - Angela Panoskaltsis-Mortari
- Division of Blood & Marrow Transplant & Cellular Therapy, Department of Pediatrics, University of Minnesota School of Medicine, Minneapolis, MN 55455
| | - Guoying Chen
- Regeneron Pharmaceuticals Inc., Tarrytown, NY 10591
| | | | | | | | | | - Bruce R. Blazar
- Division of Blood & Marrow Transplant & Cellular Therapy, Department of Pediatrics, University of Minnesota School of Medicine, Minneapolis, MN 55455
| | - Leslie S. Kean
- Division of Hematology/Oncology, Boston Children’s Hospital and Department of Pediatric Oncology, Dana Farber Cancer Institute, Department of Pediatrics, Harvard Medical School, Boston, MA 02115
| | - Ivan Maillard
- Division of Hematology/Oncology, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104
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