Resumen
Cancer cell energy metabolism plays an important role in dictating the efficacy of oncolysis by oncolytic viruses. To understand the role of multiple myeloma metabolism in reovirus oncolysis, we performed semi-targeted mass spectrometry-based metabolomics on 12 multiple myeloma cell lines and revealed a negative correlation between NAD+ levels and susceptibility to oncolysis. Likewise, a negative correlation was observed between the activity of the rate-limiting NAD+ synthesis enzyme NAMPT and oncolysis. Indeed, depletion of NAD+ levels by pharmacological inhibition of NAMPT using FK866 sensitized several myeloma cell lines to reovirus-induced killing. The myelomas that were most sensitive to this combination therapy expressed a functional p53 and had a metabolic and transcriptomic profile favoring mitochondrial metabolism over glycolysis, with the highest synergistic effect in KMS12 cells. Mechanistically, U-13C-labeled glucose flux, extracellular flux analysis, multiplex proteomics, and cell death assays revealed that the reovirus + FK866 combination caused mitochondrial dysfunction and energy depletion, leading to enhanced autophagic cell death in KMS12 cells. Finally, the combination of reovirus and NAD+ depletion achieved greater antitumor effects in KMS12 tumors in vivo and patient-derived CD138+ multiple myeloma cells. These findings identify NAD+ depletion as a potential combinatorial strategy to enhance the efficacy of oncolytic virus-based therapies in multiple myeloma.
Idioma original | English |
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Páginas (desde-hasta) | 695-706 |
Número de páginas | 12 |
Publicación | Molecular Therapy - Oncolytics |
Volumen | 24 |
DOI | |
Estado | Published - mar. 17 2022 |
Nota bibliográfica
Funding Information:This work was supported by the Dalhousie Medical Research Foundation (DMRF), Canadian Institutes of Health Research (CIHR), Cancer Research Society (CRS), and Beatrice Hunter Cancer Research Institute (BHCRI) to S.G. B.E.K. J.P.M. and M.G. are funded by BHCRI's Cancer Research Training Program (CRTP). B.E.K is also funded by Dalhousie Medical Research Foundation (DMRF)/Infection, Immunity, Inflammation & Vaccinology (I3V). P.K. is funded by Nova Scotia Graduate Scholarship (NSGS). We would like to thank Drs. Alejandro Cohen (Dalhousie University) and Sylvere Durand (Gustave Roussy) for their expertise with metabolomics and mass spectrometry. The graphical abstract was created with BioRender.com. Finally, we thank the Dalhousie University animal care facility and staff for general maintenance of all animals used in this study. Conception and design: B.E. Kennedy and S. Gujar. Development of methodology: B.E. Kennedy, M. Giacomantonio, J.P. Murphy, S. Cutler, P. Konda, S. Cutler, J.A. Paulo, and D. Gaston. Acquisition of data (provided animals, acquired and managed patients, provided facilities, etc.): B.E. Kennedy, M. Giacomantonio, J.P. Murphy, S. Cutler, M. Sadek, J.A. Paulo, G.P. Pathak, S. Renkens, S. Grieve, A. Cohen, J. Pol, G. Kroemer, S.P. Gygi, C. Richardson, M.O. Elnenaei, D. Gaston, T. Reiman, and S. Gujar. Analysis and interpretation of data (e.g. statistical analysis, biostatistics, computational analysis): B.E. Kennedy, J.P. Murphy, P. Konda, M. Giacomantonio, S. Cutler, and J.A. Paulo. Writing, review, and/or revision of the manuscript: B.E. Kennedy, J.P. Murphy, M. Giacomantonio, S. Cutler, M. Sadek, and S. Gujar. Administrative, technical, or material support (i.e. reporting or organizing data, constructing databases): B.E. Kennedy, J.P. Murphy, and S. Gujar. Study supervision: S. Gujar. Other (funding): S. Gujar. The authors declare that they have no conflict of interest or competing financial interests.
Funding Information:
This work was supported by the Dalhousie Medical Research Foundation (DMRF), Canadian Institutes of Health Research (CIHR), Cancer Research Society (CRS), and Beatrice Hunter Cancer Research Institute (BHCRI) to S.G. B.E.K., J.P.M., and M.G. are funded by BHCRI’s Cancer Research Training Program (CRTP). B.E.K is also funded by Dalhousie Medical Research Foundation (DMRF)/Infection, Immunity, Inflammation & Vaccinology (I3V). P.K. is funded by Nova Scotia Graduate Scholarship (NSGS). We would like to thank Drs. Alejandro Cohen (Dalhousie University) and Sylvere Durand (Gustave Roussy) for their expertise with metabolomics and mass spectrometry. The graphical abstract was created with BioRender.com . Finally, we thank the Dalhousie University animal care facility and staff for general maintenance of all animals used in this study.
Publisher Copyright:
© 2022 The Authors
ASJC Scopus Subject Areas
- Molecular Medicine
- Oncology
- Cancer Research
- Pharmacology (medical)
PubMed: MeSH publication types
- Journal Article