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Glucocorticoid-resistant B Cell Acute Lymphoblastic Leukemia Displays Receptor Tyrosine Kinase Activation

Overview
Journal NPJ Genom Med
Specialty Genetics
Date 2019 Apr 10
PMID 30962949
Citations 12
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Abstract

The response of childhood acute lymphoblastic leukemia (ALL) to dexamethasone predicts the long-term remission outcome. To explore the mechanisms of dexamethasone resistance in B cell ALL (B-ALL), we generated dexamethasone-resistant clones by prolonged treatment with dexamethasone. Using RNA-sequencing and high-throughput screening, we found that dexamethasone-resistant cells are dependent on receptor tyrosine kinases. Further analysis with phosphokinase arrays showed that the type III receptor tyrosine kinase FLT3 is constitutively active in resistant cells. Targeted next-generation and Sanger sequencing identified an internal tandem duplication mutation and a point mutation (R845G) in FLT3 in dexamethasone-resistant cells, which were not present in the corresponding sensitive clones. Finally, we showed that resistant cells displayed sensitivity to second-generation FLT3 inhibitors both in vitro and in vivo. Collectively, our data suggest that long-term dexamethasone treatment selects cells with a distinct genetic background, in this case oncogenic FLT3, and therefore therapies targeting FLT3 might be useful for the treatment of relapsed B-ALL patients.

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References
1.
Rozovskaia T, Feinstein E, Mor O, Foa R, Blechman J, Nakamura T . Upregulation of Meis1 and HoxA9 in acute lymphocytic leukemias with the t(4 : 11) abnormality. Oncogene. 2001; 20(7):874-8. DOI: 10.1038/sj.onc.1204174. View

2.
Armstrong S, Staunton J, Silverman L, Pieters R, den Boer M, Minden M . MLL translocations specify a distinct gene expression profile that distinguishes a unique leukemia. Nat Genet. 2001; 30(1):41-7. DOI: 10.1038/ng765. View

3.
Inoue H, Takemura H, Kawai Y, Yoshida A, Ueda T, Miyashita T . Dexamethasone-resistant human Pre-B leukemia 697 cell line evolving elevation of intracellular glutathione level: an additional resistance mechanism. Jpn J Cancer Res. 2002; 93(5):582-90. PMC: 5927028. DOI: 10.1111/j.1349-7006.2002.tb01294.x. View

4.
Ross M, Shurtleff S, Williams W, Patel D, Mahfouz R, Behm F . Classification, subtype discovery, and prediction of outcome in pediatric acute lymphoblastic leukemia by gene expression profiling. Cancer Cell. 2002; 1(2):133-43. DOI: 10.1016/s1535-6108(02)00032-6. View

5.
Norman M, Hearing S . Glucocorticoid resistance - what is known?. Curr Opin Pharmacol. 2002; 2(6):723-9. DOI: 10.1016/s1471-4892(02)00232-1. View