Abstract
Alterations of IKZF1, encoding the lymphoid transcription factor IKAROS, are a hallmark of high-risk acute lymphoblastic leukemia (ALL), however the role of IKZF1 alterations in ALL pathogenesis is poorly understood. Here, we show that in mouse models of BCR-ABL1 leukemia, Ikzf1 and Arf alterations synergistically promote the development of an aggressive lymphoid leukemia. Ikzf1 alterations result in acquisition of stem cell-like features, including self-renewal and increased bone marrow stromal adhesion. Retinoid receptor agonists reversed this phenotype, partly by inducing expression of IKZF1, resulting in abrogation of adhesion and self-renewal, cell cycle arrest, and attenuation of proliferation without direct cytotoxicity. Retinoids potentiated the activity of dasatinib in mouse and human BCR-ABL1 ALL, providing an additional therapeutic option in IKZF1-mutated ALL.
| Original language | English |
|---|---|
| Pages (from-to) | 343-356 |
| Number of pages | 14 |
| Journal | Cancer Cell |
| Volume | 28 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 14 2015 |
Bibliographical note
Publisher Copyright:© 2015 Elsevier Inc.
Funding
We thank K. Georgopolous and S. Nutt for providing Ikzf1 +/− mice and the St. Jude Children’s Research Hospital Flow Cytometry and Cell Sorting Shared Resource, Cell Tissue and Imaging Center, and Small Animal Imaging Facility. We thank D. Link for discussions regarding Prrx1-Cre; Ai9 mice. This work was supported by the American Lebanese Syrian Associated Charities of St. Jude Children’s Research hospital, NCI Cancer Center Support Grant P30 CA021765, NCI grant R25 CA23944 (M.J.A.), a Stand Up to Cancer Innovative Research Grant (C.G.M.), the Pew Charitable Trusts (C.G.M.), American Association for Cancer Research/Aflac Career Development Award (C.G.M.), an American Society of Hematology Scholar Award (C.G.M.), and ECOG grants: U10 CA21115 and U24-CA114737. This project has been funded in part with federal funds from the National Cancer Institute, NIH, under Contract No. HHSN261200800001E. The content of this publication does not necessarily reflect the views of policies of the Department of Health and Human Services, nor does mention of trade names, commercial products, or organizations imply endorsement by the United States Government.
| Funders | Funder number |
|---|---|
| National Institutes of Health (NIH) | |
| National Childhood Cancer Registry – National Cancer Institute | P30CA021765, R25CA023944, U24CA114737, U24CA196172, U10CA021115 |
| National Childhood Cancer Registry – National Cancer Institute | |
| Pew Charitable Trusts | |
| American Society of Hematology | U10 CA21115, U24-CA114737 |
| American Society of Hematology | |
| American Lebanese Syrian Associated Charities |
ASJC Scopus subject areas
- Oncology
- Cancer Research