Reference Detail

Ref Type

Journal Article

PMID

(29748211)

Authors

Bardini M, Trentin L, Rizzo F, Vieri M, Savino AM, Garrido Castro P, Fazio G, Van Roon EHJ, Kerstjens M, Smithers N, Prinjha RK, Te Kronnie G, Basso G, Stam RW, Pieters R, Biondi A, Cazzaniga G

Title

Antileukemic Efficacy of BET Inhibitor in a Preclinical Mouse Model of MLL-AF4+ Infant ALL.

Journal	Vol	Issue	Date	Pages	Journal Short Title
Molecular cancer therapeutics	17	8	2018 08	1705-1716	Mol Cancer Ther

URL

Abstract Text

MLL-rearranged acute lymphoblastic leukemia (ALL) occurring in infants is a rare but very aggressive leukemia, typically associated with a dismal prognosis. Despite the development of specific therapeutic protocols, infant patients with MLL-rearranged ALL still suffer from a low cure rate. At present, novel therapeutic approaches are urgently needed. Recently, the use of small molecule inhibitors targeting the epigenetic regulators of the MLL complex emerged as a promising strategy for the development of a targeted therapy. Herein, we have investigated the effects of bromodomain and extra-terminal (BET) function abrogation in a preclinical mouse model of MLL-AF4+ infant ALL using the BET inhibitor I-BET151. We reported that I-BET151 is able to arrest the growth of MLL-AF4+ leukemic cells in vitro, by blocking cell division and rapidly inducing apoptosis. Treatment with I-BET151 in vivo impairs the leukemic engraftment of patient-derived primary samples and lower the disease burden in mice. I-BET151 affects the transcriptional profile of MLL-rearranged ALL through the deregulation of BRD4, HOXA7/HOXA9, and RUNX1 gene networks. Moreover, I-BET151 treatment sensitizes glucocorticoid-resistant MLL-rearranged cells to prednisolone in vitro and is more efficient when used in combination with HDAC inhibitors, both in vitro and in vivo Given the aggressiveness of the disease, the failure of the current therapies and the lack of an ultimate cure, this study paves the way for the use of BET inhibitors to treat MLL-rearranged infant ALL for future clinical applications. Mol Cancer Ther; 17(8); 1705-16. ©2018 AACR.

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Molecular Profile	Treatment Approach

Gene Name	Source	Synonyms	Protein Domains	Gene Description	Gene Role

Therapy Name	Drugs	Efficacy Evidence	Clinical Trials

Drug Name	Trade Name	Synonyms	Drug Classes	Drug Description

Gene	Variant	Impact	Protein Effect	Variant Description	Associated with drug Resistance

Molecular Profile	Indication/Tumor Type	Response Type	Therapy Name	Approval Status	Evidence Type	Efficacy Evidence	References