Article (Scientific journals)
Mutant IL7R collaborates with MYC to induce T-cell acute lymphoblastic leukemia.
Oliveira, Mariana L; Bacquelaine Veloso, Alexandra; Garcia, Elaine G et al.
2022In Leukemia, 36 (6), p. 1533 - 1540
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Keywords :
IL7R protein, human; Interleukin-7 Receptor alpha Subunit; Receptors, Interleukin-7; Animals; Animals, Genetically Modified; Carcinogenesis/metabolism; Child; Humans; Interleukin-7 Receptor alpha Subunit/metabolism; Receptors, Interleukin-7/genetics; Receptors, Interleukin-7/metabolism; Signal Transduction/genetics; T-Lymphocytes/metabolism; Zebrafish/genetics; Zebrafish/metabolism; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma/pathology; Carcinogenesis; Precursor T-Cell Lymphoblastic Leukemia-Lymphoma; Signal Transduction; T-Lymphocytes; Zebrafish; Hematology; Oncology; Cancer Research
Abstract :
[en] T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive pediatric cancer. Amongst the wide array of driver mutations, 10% of T-ALL patients display gain-of-function mutations in the IL-7 receptor α chain (IL-7Rα, encoded by IL7R), which occur in different molecular subtypes of this disease. However, it is still unclear whether IL-7R mutational activation is sufficient to transform T-cell precursors. Also, which genes cooperate with IL7R to drive leukemogenesis remain poorly defined. Here, we demonstrate that mutant IL7R alone is capable of inducing T-ALL with long-latency in stable transgenic zebrafish and transformation is associated with MYC transcriptional activation. Additionally, we find that mutant IL7R collaborates with Myc to induce early onset T-ALL in transgenic zebrafish, supporting a model where these pathways collaborate to drive leukemogenesis. T-ALLs co-expressing mutant IL7R and Myc activate STAT5 and AKT pathways, harbor reduced numbers of apoptotic cells and remake tumors in transplanted zebrafish faster than T-ALLs expressing Myc alone. Moreover, limiting-dilution cell transplantation experiments reveal that activated IL-7R signaling increases the overall frequency of leukemia propagating cells. Our work highlights a synergy between mutant IL7R and Myc in inducing T-ALL and demonstrates that mutant IL7R enriches for leukemia propagating potential.
Disciplines :
Hematology
Author, co-author :
Oliveira, Mariana L;  Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal
Bacquelaine Veloso, Alexandra  ;  Université de Liège - ULiège > Département des sciences de la vie > GIGA-R : Virologie - Immunologie ; Molecular Pathology Unit, MGH Research Institute, Charlestown, MA, 02129, USA ; MGH Cancer Center, Harvard Medical School, Charlestown, MA, 02129, USA ; Center for Regenerative Medicine, MGH, Boston, MA, 02114, USA ; Harvard Stem Cell Institute, Cambridge, MA, 02139, USA
Garcia, Elaine G;  Molecular Pathology Unit, MGH Research Institute, Charlestown, MA, 02129, USA ; MGH Cancer Center, Harvard Medical School, Charlestown, MA, 02129, USA ; Center for Regenerative Medicine, MGH, Boston, MA, 02114, USA ; Harvard Stem Cell Institute, Cambridge, MA, 02139, USA
Iyer, Sowmya;  Molecular Pathology Unit, MGH Research Institute, Charlestown, MA, 02129, USA ; MGH Cancer Center, Harvard Medical School, Charlestown, MA, 02129, USA ; Center for Regenerative Medicine, MGH, Boston, MA, 02114, USA ; Harvard Stem Cell Institute, Cambridge, MA, 02139, USA
Pereira, Clara ;  Smurfit Institute of Genetics, Trinity College Dublin, University of Dublin, Dublin 2, Ireland
Barreto, Vasco M ;  DNA Breaks Laboratory, CEDOC - Chronic Diseases Research Center, NOVA Medical School - Faculdade de Ciências Médicas, Universidade NOVA de Lisboa, Lisbon, Portugal
Langenau, David M;  Molecular Pathology Unit, MGH Research Institute, Charlestown, MA, 02129, USA. dlangenau@mgh.harvard.edu ; MGH Cancer Center, Harvard Medical School, Charlestown, MA, 02129, USA. dlangenau@mgh.harvard.edu ; Center for Regenerative Medicine, MGH, Boston, MA, 02114, USA. dlangenau@mgh.harvard.edu ; Harvard Stem Cell Institute, Cambridge, MA, 02139, USA. dlangenau@mgh.harvard.edu
Barata, João T ;  Instituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal. joao_barata@medicina.ulisboa.pt
Language :
English
Title :
Mutant IL7R collaborates with MYC to induce T-cell acute lymphoblastic leukemia.
Publication date :
June 2022
Journal title :
Leukemia
ISSN :
0887-6924
eISSN :
1476-5551
Publisher :
Springer Nature, England
Volume :
36
Issue :
6
Pages :
1533 - 1540
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
This work was supported by NIH grant R01CA211734 (DML), the MGH Research Scholar Award (DML), the ERC consolidator CoG-648455 and proof-of-concept PoC-862545 grants from the European Research Council, under the European Union\u2019s Horizon 2020 research and innovation programme (JTB), and the FCT grants FAPESP/20015/2014, PTDC/MEC-HEM/31588/2017 and PTDC/MEC-ONC/4606/2021 (JTB).
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