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Nwosu ZC, Ward MH, Sajjakulnukit P, Poudel P, Ragulan C, Kasperek S, Radyk M, Sutton D, Menjivar RE, Andren A, Apiz-Saab JJ, Tolstyka Z, Brown K, Lee HJ, Dzierozynski LN, He X, Ps H, Ugras J, Nyamundanda G, Zhang L, Halbrook CJ, Carpenter ES, Shi J, Shriver LP, Patti GJ, Muir A, Pasca di Magliano M, Sadanandam A, Lyssiotis CA. Uridine-derived ribose fuels glucose-restricted pancreatic cancer. Nature 2023; 618:151-158. [PMID: 37198494 PMCID: PMC10232363 DOI: 10.1038/s41586-023-06073-w] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 04/12/2023] [Indexed: 05/19/2023]
Abstract
Pancreatic ductal adenocarcinoma (PDA) is a lethal disease notoriously resistant to therapy1,2. This is mediated in part by a complex tumour microenvironment3, low vascularity4, and metabolic aberrations5,6. Although altered metabolism drives tumour progression, the spectrum of metabolites used as nutrients by PDA remains largely unknown. Here we identified uridine as a fuel for PDA in glucose-deprived conditions by assessing how more than 175 metabolites impacted metabolic activity in 21 pancreatic cell lines under nutrient restriction. Uridine utilization strongly correlated with the expression of uridine phosphorylase 1 (UPP1), which we demonstrate liberates uridine-derived ribose to fuel central carbon metabolism and thereby support redox balance, survival and proliferation in glucose-restricted PDA cells. In PDA, UPP1 is regulated by KRAS-MAPK signalling and is augmented by nutrient restriction. Consistently, tumours expressed high UPP1 compared with non-tumoural tissues, and UPP1 expression correlated with poor survival in cohorts of patients with PDA. Uridine is available in the tumour microenvironment, and we demonstrated that uridine-derived ribose is actively catabolized in tumours. Finally, UPP1 deletion restricted the ability of PDA cells to use uridine and blunted tumour growth in immunocompetent mouse models. Our data identify uridine utilization as an important compensatory metabolic process in nutrient-deprived PDA cells, suggesting a novel metabolic axis for PDA therapy.
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Affiliation(s)
- Zeribe C Nwosu
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Matthew H Ward
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
- Department of Chemistry, Washington University in St Louis, St Louis, MO, USA
- Department of Medicine, Washington University in St Louis, St Louis, MO, USA
- Center for Metabolomics and Isotope Tracing, Washington University in St Louis, St Louis, MO, USA
| | - Peter Sajjakulnukit
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Pawan Poudel
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Chanthirika Ragulan
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Steven Kasperek
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Megan Radyk
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Damien Sutton
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Rosa E Menjivar
- Cellular and Molecular Biology Program, University of Michigan, Ann Arbor, MI, USA
| | - Anthony Andren
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Juan J Apiz-Saab
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Zachary Tolstyka
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Kristee Brown
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Ho-Joon Lee
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | | | - Xi He
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
| | - Hari Ps
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Julia Ugras
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Gift Nyamundanda
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK
| | - Li Zhang
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Christopher J Halbrook
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA
| | - Eileen S Carpenter
- Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, MI, USA
| | - Jiaqi Shi
- Department of Pathology and Clinical Labs, Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - Leah P Shriver
- Department of Chemistry, Washington University in St Louis, St Louis, MO, USA
- Department of Medicine, Washington University in St Louis, St Louis, MO, USA
- Center for Metabolomics and Isotope Tracing, Washington University in St Louis, St Louis, MO, USA
| | - Gary J Patti
- Department of Chemistry, Washington University in St Louis, St Louis, MO, USA
- Department of Medicine, Washington University in St Louis, St Louis, MO, USA
- Center for Metabolomics and Isotope Tracing, Washington University in St Louis, St Louis, MO, USA
| | - Alexander Muir
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Marina Pasca di Magliano
- Department of Surgery, University of Michigan, Ann Arbor, MI, USA
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA
| | - Anguraj Sadanandam
- Division of Molecular Pathology, The Institute of Cancer Research, London, UK.
- Centre for Global Oncology, Division of Molecular Pathology, The Institute of Cancer Research, London, UK.
| | - Costas A Lyssiotis
- Department of Molecular and Integrative Physiology, University of Michigan, Ann Arbor, MI, USA.
- Department of Internal Medicine, Division of Gastroenterology, University of Michigan, Ann Arbor, MI, USA.
- Rogel Cancer Center, University of Michigan, Ann Arbor, MI, USA.
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Haraguchi M, Tsujimoto H, Fukushima M, Higuchi I, Kuribayashi H, Utsumi H, Nakayama A, Hashizume Y, Hirato J, Yoshida H, Hara H, Hamano S, Kawaguchi H, Furukawa T, Miyazono K, Ishikawa F, Toyoshima H, Kaname T, Komatsu M, Chen ZS, Gotanda T, Tachiwada T, Sumizawa T, Miyadera K, Osame M, Yoshida H, Noda T, Yamada Y, Akiyama SI. Targeted deletion of both thymidine phosphorylase and uridine phosphorylase and consequent disorders in mice. Mol Cell Biol 2002; 22:5212-21. [PMID: 12077348 PMCID: PMC139774 DOI: 10.1128/mcb.22.14.5212-5221.2002] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Thymidine phosphorylase (TP) regulates intracellular and plasma thymidine levels. TP deficiency is hypothesized to (i) increase levels of thymidine in plasma, (ii) lead to mitochondrial DNA alterations, and (iii) cause mitochondrial neurogastrointestinal encephalomyopathy (MNGIE). In order to elucidate the physiological roles of TP, we generated mice deficient in the TP gene. Although TP activity in the liver was inhibited in these mice, it was fully maintained in the small intestine. Murine uridine phosphorylase (UP), unlike human UP, cleaves thymidine, as well as uridine. We therefore generated TP-UP double-knockout (TP(-/-) UP(-/-)) mice. TP activities were inhibited in TP(-/-) UP(-/-) mice, and the level of thymidine in the plasma of TP(-/-) UP(-/-) mice was higher than for TP(-/-) mice. Unexpectedly, we could not observe alterations of mitochondrial DNA or pathological changes in the muscles of the TP(-/-) UP(-/-) mice, even when these mice were fed thymidine for 7 months. However, we did find hyperintense lesions on magnetic resonance T(2) maps in the brain and axonal edema by electron microscopic study of the brain in TP(-/-) UP(-/-) mice. These findings suggested that the inhibition of TP activity caused the elevation of pyrimidine levels in plasma and consequent axonal swelling in the brains of mice. Since lesions in the brain do not appear to be due to mitochondrial alterations and pathological changes in the muscle were not found, this model will provide further insights into the causes of MNGIE.
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Affiliation(s)
- Misako Haraguchi
- Department of Cancer Chemotherapy, Institute for Cancer Research, Third Department of Internal Medicin, Kagoshima University, 8-35-1 Sakura-gaoka, Kagoshima 890-8520, Japan
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