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Marini C, Cossu V, Lanfranchi F, Carta S, Vitale F, D'Amico F, Bauckneht M, Morbelli S, Donegani MI, Chiola S, Raffa S, Sofia L, Di Raimondo T, Ballerini F, Ghiggi C, Durando P, Ravera S, Riondato M, Orengo AM, Bruno S, Chiesa S, Sambuceti G. Divergent Oxidative Stress in Normal Tissues and Inflammatory Cells in Hodgkin and Non-Hodgkin Lymphoma. Cancers (Basel) 2023; 15:3533. [PMID: 37444643 DOI: 10.3390/cancers15133533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/04/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023] Open
Abstract
BACKGROUND Previous studies reported mitochondrial and endoplasmic reticulum redox stress in peripheral blood mononucleated cells (PBMCs) of treatment-naïve Hodgkin lymphoma (HL) patients. Here, we assessed whether this response also applies to non-HL (NHL) patients, and whether the oxidative damage is a selective feature of PBMCs or, rather, also affects tissues not directly involved in the inflammatory response. METHODS Isolated PBMCs of 28 HL, 9 diffuse large B cell lymphoma, 8 less aggressive-NHL, and 45 controls underwent flow cytometry to evaluate redox stress and uptake of the glucose analogue 2-NBDG. This analysis was complemented with the assay of malondialdehyde (MDA) levels and enzymatic activity of glucose-6P-dehydrogenase and hexose-6P-dehydrogenase (H6PD). In all lymphoma patients, 18F-fluoro-deoxyglucose uptake was estimated in the myocardium and skeletal muscles. RESULTS Mitochondrial reactive oxygen species generation and MDA levels were increased only in HL patients as well as H6PD activity and 2-NBDG uptake. Similarly, myocardial FDG retention was higher in HL than in other groups as opposed to a similar tracer uptake in the skeletal muscle. CONCLUSIONS Redox stress of PBMCs is more pronounced in HL with respect to both NHL groups. This phenomenon is coherent with an increased activity of H6PD that also extends to the myocardium.
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Affiliation(s)
- Cecilia Marini
- Institute of Molecular Bioimaging and Physiology (IBFM), National Research Council (CNR), 20054 Milan, Italy
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Vanessa Cossu
- Human Anatomy Section, Department of Experimental Medicine, University of Genoa, 16132 Genova, Italy
| | | | - Sonia Carta
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
| | | | - Francesca D'Amico
- Department of Health Sciences, University of Genoa, 16132 Genova, Italy
| | - Matteo Bauckneht
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
- Department of Health Sciences, University of Genoa, 16132 Genova, Italy
| | - Silvia Morbelli
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
- Department of Health Sciences, University of Genoa, 16132 Genova, Italy
| | | | - Silvia Chiola
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Stefano Raffa
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Luca Sofia
- Department of Health Sciences, University of Genoa, 16132 Genova, Italy
| | - Tania Di Raimondo
- Department of Health Sciences, University of Genoa, 16132 Genova, Italy
| | - Filippo Ballerini
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
- Department of Internal Medicine, University of Genoa, 16132 Genoa, Italy
| | - Chiara Ghiggi
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Paolo Durando
- Department of Health Sciences, University of Genoa, 16132 Genova, Italy
| | - Silvia Ravera
- Human Anatomy Section, Department of Experimental Medicine, University of Genoa, 16132 Genova, Italy
| | | | | | - Silvia Bruno
- Human Anatomy Section, Department of Experimental Medicine, University of Genoa, 16132 Genova, Italy
| | - Sabrina Chiesa
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
| | - Gianmario Sambuceti
- IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy
- Department of Health Sciences, University of Genoa, 16132 Genova, Italy
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Fundamental Role of Pentose Phosphate Pathway within the Endoplasmic Reticulum in Glutamine Addiction of Triple-Negative Breast Cancer Cells. Antioxidants (Basel) 2022; 12:antiox12010043. [PMID: 36670904 PMCID: PMC9854646 DOI: 10.3390/antiox12010043] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/16/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022] Open
Abstract
Cancer utilization of large glutamine equivalents contributes to diverging glucose-6-P flux toward the pentose phosphate shunt (PPP) to feed the building blocks and the antioxidant responses of rapidly proliferating cells. In addition to the well-acknowledged cytosolic pathway, cancer cells also run a largely independent PPP, triggered by hexose-6P-dehydrogenase within the endoplasmic reticulum (ER), whose activity is mandatory for the integrity of ER-mitochondria networking. To verify whether this reticular metabolism is dependent on glutamine levels, we complemented the metabolomic characterization of intermediates of the glucose metabolism and tricarboxylic acid cycle with the estimation of proliferating activity, energy metabolism, redox damage, and mitochondrial function in two breast cancer cell lines. ER-PPP activity and its determinants were estimated by the ER accumulation of glucose analogs. Glutamine shortage decreased the proliferation rate despite increased ATP and NADH levels. It depleted NADPH reductive power and increased malondialdehyde content despite a marked increase in glucose-6P-dehydrogenase. This paradox was explained by the deceleration of ER-PPP favored by the decrease in hexose-6P-dehydrogenase expression coupled with the opposite response of its competitor enzyme glucose-6P-phosphatase. The decreased ER-PPP activity eventually hampered mitochondrial function and calcium exchanges. These data configure the ER-PPP as a powerful, unrecognized regulator of cancer cell metabolism and proliferation.
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