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Selective inhibition of aldo-keto reductase 1C3: a novel mechanism involved in midostaurin and daunorubicin synergism

  • Toxicokinetics and Metabolism
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Abstract

Midostaurin is an FMS-like tyrosine kinase 3 receptor (FLT3) inhibitor that provides renewed hope for treating acute myeloid leukaemia (AML). The limited efficacy of this compound as a monotherapy contrasts with that of its synergistic combination with standard cytarabine and daunorubicin (Dau), suggesting a therapeutic benefit that is not driven only by FLT3 inhibition. In an AML context, the activity of the enzyme aldo-keto reductase 1C3 (AKR1C3) is a crucial factor in chemotherapy resistance, as it mediates the intracellular transformation of anthracyclines to less active hydroxy metabolites. Here, we report that midostaurin is a potent inhibitor of Dau inactivation mediated by AKR1C3 in both its recombinant form as well as during its overexpression in a transfected cell model. Likewise, in the FLT3 AML cell line KG1a, midostaurin was able to increase the cellular accumulation of Dau and significantly decrease its metabolism by AKR1C3 simultaneously. The combination of those mechanisms increased the nuclear localization of Dau, thus synergizing its cytotoxic effects on KG1a cells. Our results provide new in vitro evidence of how the therapeutic activity of midostaurin could operate beyond targeting the FLT3 receptor.

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Abbreviations

ABC:

ATP-binding cassette

AKR:

Aldo-keto reductase

AML:

Acute myeloid leukaemia

CI:

Combination index

CRE:

Carbonyl-reducing enzyme

Dau:

Daunorubicin

Dau-ol:

Daunorubicinol

DMSO:

Dimethyl sulfoxide

Fa:

Fraction affected

FLT3:

FMS-like tyrosine kinase 3 receptor

HCT116-AKR1C3:

Cells transfected with pCI_AKR1C3

Mid:

Midostaurin

MTT:

3-(4,5-Dimethylthiazolyl-2-yl)2,5-diphenyl tetrazolium bromide

MDR:

Multidrug resistance

NADPH:

Nicotinamide adenine dinucleotide phosphate

PGD2:

Prostaglandin D2

11β-PGF2α:

11β-Prostaglandin F2α

PPARγ:

Peroxisome proliferator-activated receptor gamma

SD:

Standard deviation

SDR:

Short-chain dehydrogenase/reductase

TKI:

Tyrosine kinase inhibitor

UHPLC:

Ultra high-performance liquid chromatography

WT:

Wild type

15dPGJ2:

15-DeoxyΔ12,14PGJ2

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Acknowledgements

This work was supported by Czech Science Foundation (project no. 16-26849S), by Grant Agency of Charles University (project no. 1006218) and by the project EFSA-CDN (no. CZ.02.1.01/0.0/0.0/16_019/0000841) co-funded by ERDF and finally by Charles University (project no. SVV 260 416) and language editing was provided by Elsevier. Computational resources were provided by the CESNET LM2015042 and the CERIT Scientific Cloud LM2015085, provided under the program “Projects of Large Research, Development, and Innovations Infrastructures”.

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Correspondence to Vladimír Wsól.

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Morell, A., Novotná, E., Milan, J. et al. Selective inhibition of aldo-keto reductase 1C3: a novel mechanism involved in midostaurin and daunorubicin synergism. Arch Toxicol 95, 67–78 (2021). https://doi.org/10.1007/s00204-020-02884-2

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  • DOI: https://doi.org/10.1007/s00204-020-02884-2

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