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Letters to the Editor
derived oxidative phosphorylation and subsequent reduced tumor burden. While it is likely that daratumum- ab functions through a number of mechanisms of action, here we show in an NSG mouse model lacking functional B cells, T cells and natural killer cells, that inhibition of mitochondrial transfer can be added to the list of mecha- nisms of action for this drug in AML. These data support the further investigation of daratumumab as a therapeu- tic approach for the treatment of mitochondrial-depen- dent tumor growth.
Jayna J. Mistry,1,2 Jamie A. Moore,1 Prakrit Kumar,1 Christopher R. Marlein,1 Charlotte Hellmich,1,3 Genevra Pillinger,1 Aisha Jibril,1 Federica Di Palma,1,2 Angela Collins,3 Kristian M. Bowles1,3
and Stuart A Rushworth1
1Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich; 2Earlham Institute, Norwich Research Park, Norwich and 3Department of Haematology, Norfolk and Norwich University Hospitals NHS Trust, Norwich, UK
Correspondence:
KRISTIANBOWLES- k.bowles@uea.ac.uk STUART RUSHWORTH - s.rushworth@uea.ac.uk
doi:10.3324/haematol.2019.242974
Disclosures: KMB and SAR received funding from Jannsen Pharmaceuticals for this study.
Contributions: KMB and SAR designed the research; JJM, JAM, CRM, CH, GP, PK, AJ and SAR performed the research; AC, FDP, and KMB provided essential reagents and knowledge; JJM, KMB and SAR wrote the paper.
Acknowledgments: the authors also thank Allyson Tyler,
Dr. Ian Thirkettle and Karen Ashurst from the Laboratory Medicine Department at the Norfolk and Norwich University Hospital for technical assistance.
Funding: the authors wish to thank the Norwich Medical School, the United Kingdom National Health Service, the Big C and the Rosetrees Trust for funding, and the Norwich Biorepository (UK)
for help with sample collection and storage. pCDH-Lucferase-T2A- mCherry was kindly gifted by Prof. Irmela Jeremias, MD, from Helmholtz Zentrum München, Munich, Germany. KMB and SAR receive research funding from Janssen.
References
1. Shafat MS, Gnaneswaran B, Bowles KM, Rushworth SA. The bone marrow microenvironment - home of the leukemic blasts. Blood Rev. 2017;31(5):277-286.
2. Moschoi R, Imbert V, Nebout M, et al. Protective mitochondrial transfer from bone marrow stromal cells to acute myeloid leukemic cells during chemotherapy. Blood. 2016;128(2):253-264.
3. Marlein CR, Zaitseva L, Piddock RE, et al. NADPH oxidase-2 derived superoxide drives mitochondrial transfer from bone marrow stromal cells to leukemic blasts. Blood. 2017;130(14):1649-1660.
4. Mistry JJ, Marlein CR, Moore JA, et al. ROS-mediated PI3K activa- tion drives mitochondrial transfer from stromal cells to hematopoiet- ic stem cells in response to infection. Proc Natl Acad Sci U S A. 2019; 116(49):24610-24619.
5. DiNardo CD, Pratz K, Pullarkat V, et al. Venetoclax combined with decitabine or azacitidine in treatment-naive, elderly patients with acute myeloid leukemia. Blood. 2019;133(1):7-17.
6. Deaglio S, Mehta K, Malavasi F. Human CD38: a (r)evolutionary story of enzymes and receptors. Leuk Res. 2001;25(1):1-12.
7. Taussig DC, Vargaftig J, Miraki-Moud F, et al. Leukemia-initiating cells from some acute myeloid leukemia patients with mutated nucleophosmin reside in the CD34(-) fraction. Blood. 2010; 115(10):1976-1984.
8. Sarry J-E, Murphy K, Perry R, et al. Human acute myelogenous leukemia stem cells are rare and heterogeneous when assayed in NOD/SCID/IL2Rγc-deficient mice. J Clin Invest. 2011;121(1):384- 395.
9. MarleinCR,PiddockRE,MistryJJ,etal.CD38-drivenmitochondrial trafficking promotes bioenergetic plasticity in multiple myeloma. Cancer Res. 2019;79(9):2285-2297.
10. van de Donk NWCJ, Usmani SZ. CD38 antibodies in multiple myeloma: mechanisms of action and modes of resistance. Front Immunol. 2018;9:2134.
11. Naik J, Themeli M, de Jong-Korlaar R, et al. CD38 as a therapeutic target for adult acute myeloid leukemia and T-cell acute lymphoblas- tic leukemia. Haematologica. 2019;104(3):e100-e103.
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