CD38-Induced Metabolic Dysfunction Primes Multiple Myeloma Cells for NAD+-Lowering Agents
| Autor: | Pamela Becherini, Debora Soncini, Silvia Ravera, Elisa Gelli, Claudia Martinuzzi, Giulia Giorgetti, Antonia Cagnetta, Fabio Guolo, Federico Ivaldi, Maurizio Miglino, Sara Aquino, Katia Todoerti, Antonino Neri, Andrea Benzi, Mario Passalacqua, Alessio Nencioni, Ida Perrotta, Maria Eugenia Gallo Cantafio, Nicola Amodio, Antonio De Flora, Santina Bruzzone, Roberto M. Lemoli, Michele Cea |
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| Jazyk: | angličtina |
| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Antioxidants, Vol 12, Iss 2, p 494 (2023) |
| Druh dokumentu: | article |
| ISSN: | 12020494 2076-3921 |
| DOI: | 10.3390/antiox12020494 |
| Popis: | Cancer cells fuel growth and energy demands by increasing their NAD+ biosynthesis dependency, which therefore represents an exploitable vulnerability for anti-cancer strategies. CD38 is a NAD+-degrading enzyme that has become crucial for anti-MM therapies since anti-CD38 monoclonal antibodies represent the backbone for treatment of newly diagnosed and relapsed multiple myeloma patients. Nevertheless, further steps are needed to enable a full exploitation of these strategies, including deeper insights of the mechanisms by which CD38 promotes tumorigenesis and its metabolic additions that could be selectively targeted by therapeutic strategies. Here, we present evidence that CD38 upregulation produces a pervasive intracellular-NAD+ depletion, which impairs mitochondrial fitness and enhances oxidative stress; as result, genetic or pharmacologic approaches that aim to modify CD38 surface-level prime MM cells to NAD+-lowering agents. The molecular mechanism underlying this event is an alteration in mitochondrial dynamics, which decreases mitochondria efficiency and triggers energetic remodeling. Overall, we found that CD38 handling represents an innovative strategy to improve the outcomes of NAD+-lowering agents and provides the rationale for testing these very promising agents in clinical studies involving MM patients. |
| Databáze: | Directory of Open Access Journals |
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