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MLL-AF9 Expression in Hematopoietic Stem Cells Drives a Highly Invasive AML Expressing EMT-Related Genes Linked to Poor Outcome

Stavropoulou, Vaia and Kaspar, Susanne and Brault, Laurent and Sanders, Mathijs A. and Juge, Sabine and Morettini, Stefano and Tzankov, Alexandar and Iacovino, Michelina and Lau, I-Jun and Milne, Thomas A. and Royo, Hélène and Kyba, Michael and Valk, Peter J. M. and Peters, Antoine H. F. M. and Schwaller, Juerg. (2016) MLL-AF9 Expression in Hematopoietic Stem Cells Drives a Highly Invasive AML Expressing EMT-Related Genes Linked to Poor Outcome. Cancer cell, 30 (1). pp. 43-58.

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Official URL: https://edoc.unibas.ch/62061/

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Abstract

To address the impact of cellular origin on acute myeloid leukemia (AML), we generated an inducible transgenic mouse model for MLL-AF9-driven leukemia. MLL-AF9 expression in long-term hematopoietic stem cells (LT-HSC) in vitro resulted in dispersed clonogenic growth and expression of genes involved in migration and invasion. In vivo, 20% LT-HSC-derived AML were particularly aggressive with extensive tissue infiltration, chemoresistance, and expressed genes related to epithelial-mesenchymal transition (EMT) in solid cancers. Knockdown of the EMT regulator ZEB1 significantly reduced leukemic blast invasion. By classifying mouse and human leukemias according to Evi1/EVI1 and Erg/ERG expression, reflecting aggressiveness and cell of origin, and performing comparative transcriptomics, we identified several EMT-related genes that were significantly associated with poor overall survival of AML patients.
Faculties and Departments:03 Faculty of Medicine > Bereich Kinder- und Jugendheilkunde (Klinik) > Kinder- und Jugendheilkunde (UKBB) > Kindliche Leukämie (Schwaller)
03 Faculty of Medicine > Departement Klinische Forschung > Bereich Kinder- und Jugendheilkunde (Klinik) > Kinder- und Jugendheilkunde (UKBB) > Kindliche Leukämie (Schwaller)
03 Faculty of Medicine > Departement Biomedizin > Department of Biomedicine, University Children's Hospital > Childhood Leukemia (Schwaller)
UniBasel Contributors:Schwaller, Jürg
Item Type:Article, refereed
Article Subtype:Research Article
ISSN:1878-3686
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:31 May 2020 17:40
Deposited On:31 May 2020 17:40

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