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Zhang Y, Yang Y, Kuang S, Zhang Y, Qin H, Xie J. GPX3-Mediated Oxidative Stress Affects Pyrimidine Metabolism Levels in Stomach Adenocarcinoma via the AMPK/mTOR Pathway. Int J Clin Pract 2024; 2024:6875417. [PMID: 38322113 PMCID: PMC10846926 DOI: 10.1155/2024/6875417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 12/26/2023] [Accepted: 01/11/2024] [Indexed: 02/08/2024] Open
Abstract
Background Amino acid metabolism, including ATP production, nucleotide synthesis, and redox homeostatic processes, are associated with proliferation and differentiation of tumor cells. This study aimed to identify novel prognostic biomarkers and potential therapeutic targets of amino acid metabolism-related genes for stomach adenocarcinoma (STAD). Methods RNA sequencing transcriptome data in the TCGA-STAD (training set) and GTEx datasets (validation set) were used. The LIMMA R program enabled the differentially expressed amino acid metabolism-related genes (AAMRGs) to be found. A prognostic risk score model based on clinical phenotypic features was built using LASSO regression and step multi-Cox analyses. Gene set enrichment analysis (GSEA) was used to find potential molecular pathways associated with STAD. Hierarchical cluster analysis was used to evaluate pyrimidine metabolism. Cultured STAD cells assessed the proliferation of STAD and upregulation of GPX3 expression by CCK8 and flow cytometry. Transwell and wound healing assays assessed the impact of GPX3 on invasion and migration of STAD cells. Western blot and qRT-PCR were used to measure changes in pyrimidine metabolism-related markers and active molecules involved in the AMPK/mTOR signaling pathway. Results Three AAMRGs, DNMT1, F2R, and GPX3, could independently predict the course of STAD. Pyrimidine metabolism appeared to be significantly associated with these by GSEA and clustering analyses. Pyrimidine metabolism was negatively correlated with GPX3. Functional studies using an overexpressed GPX3 plasmid showed an enhanced migration and invasion of STAD cells as well as the expression of genes associated with pyrimidine metabolism and the AMPK/mTOR signaling pathway. By using a CAD siRNA, it was found that that GPX3 affected 5-fluorouracil resistance during de novo synthesis of pyrimidine through the CAD-UMPS signaling axis. Conclusions GPX3 which regulates the level of pyrimidine metabolism through the AMPK/mTOR pathway was found to be closely associated with STAD. Our findings demonstrate GPX3 is a reliable biomarker for the prognosis of amino acid metabolism and a probable target for STAD therapy.
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Affiliation(s)
- Yaowen Zhang
- Department of Histology and Embryology, Youjiang Medical University for Nationalities, Baise, China
| | - Yixin Yang
- Department of Histology and Embryology, Youjiang Medical University for Nationalities, Baise, China
| | - Shanshan Kuang
- Department of Histology and Embryology, Youjiang Medical University for Nationalities, Baise, China
| | - Yang Zhang
- Department of Histology and Embryology, Youjiang Medical University for Nationalities, Baise, China
| | - Hancheng Qin
- Department of Pathophysiology, Youjiang Medical University for Nationalities, Baise, China
| | - Jisheng Xie
- Department of Histology and Embryology, Youjiang Medical University for Nationalities, Baise, China
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Nada H, Kim S, Park S, Lee MY, Lee K. Identification of Potent hDHODH Inhibitors for Lung Cancer via Virtual Screening of a Rationally Designed Small Combinatorial Library. ACS OMEGA 2023; 8:21769-21780. [PMID: 37360481 PMCID: PMC10286098 DOI: 10.1021/acsomega.3c01323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/30/2023] [Indexed: 06/28/2023]
Abstract
Cancer is characterized by altered cellular metabolism, and metabolic enzymes are considered as a promising target for anticancer therapy. Pyrimidine metabolism dysregulation is associated with various types of cancer, particularly lung cancer, which is one of the leading causes of cancer-related mortality worldwide. Recent studies have shown that small-cell lung cancer cells are particularly reliant on the pyrimidine biosynthesis pathway and are sensitive to its disruption. DHODH, the rate-limiting enzyme of the de novo pyrimidine production pathway, is essential in the production of RNA and DNA and is overexpressed in malignancies such as AML, skin cancer, breast cancer, and lung cancer, thereby highlighting DHODH as a viable target for developing drugs to combat lung cancer. Herein, rational drug design and computational techniques were used to discover novel DHODH inhibitors. A small combinatorial library was generated, and the top hits were synthesized and tested for anticancer activity against three lung cancer cell lines. Among the tested compounds, compound 5c possessed a stronger cytotoxicity (TC50 of 11 μM) compared to the standard FDA-approved drug (Regorafenib, TC50 of 13 μM) on the A549 cell line. Furthermore, compound 5c demonstrated potent inhibitory activity against hDHODH at a nanomolar level of 421 nM. DFT, molecular docking, molecular dynamic simulations, and free energy calculations were also carried out to understand the inhibitory mechanisms of the synthesized scaffolds. These in silico studies identified key mechanisms and structural features that will be crucial for future studies.
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Abstract
Metabolic alterations are a key hallmark of cancer cells, and the augmented synthesis and use of nucleotide triphosphates is a critical and universal metabolic dependency of cancer cells across different cancer types and genetic backgrounds. Many of the aggressive behaviours of cancer cells, including uncontrolled proliferation, chemotherapy resistance, immune evasion and metastasis, rely heavily on augmented nucleotide metabolism. Furthermore, most of the known oncogenic drivers upregulate nucleotide biosynthetic capacity, suggesting that this phenotype is a prerequisite for cancer initiation and progression. Despite the wealth of data demonstrating the efficacy of nucleotide synthesis inhibitors in preclinical cancer models and the well-established clinical use of these drugs in certain cancer settings, the full potential of these agents remains unrealized. In this Review, we discuss recent studies that have generated mechanistic insights into the diverse biological roles of hyperactive cancer cell nucleotide metabolism. We explore opportunities for combination therapies that are highlighted by these recent advances and detail key questions that remain to be answered, with the goal of informing urgently warranted future studies.
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Affiliation(s)
- Nicholas J Mullen
- Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE, USA
| | - Pankaj K Singh
- Department of Oncology Science, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
- Department of Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
- OU Health Stephenson Cancer Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA.
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Boese AC, Hwang JS, Young I, Malin CM, Avalos V, Kang J, Kang S. Metabolic inhibitor screening identifies dihydrofolate reductase as an inducer of the tumor immune escape mediator CD24. IMMUNOMEDICINE 2022; 2:e1041. [PMID: 36816458 PMCID: PMC9937563 DOI: 10.1002/imed.1041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 10/27/2022] [Indexed: 12/03/2022]
Abstract
Immune checkpoint inhibitors have improved the clinical management of some cancer cases, yet patients still fail to respond to immunotherapy. Dysregulated metabolism is a common feature of many cancers, and metabolites are known to modulate functions in cancer cells. To identify potential metabolic pathways involved in anti-tumor immune response, we employed a metabolic inhibitor-based drug screen in human lung cancer cell lines and examined expression changes in a panel of immune regulator genes. Notably, pharmacologic inhibition of dihydrofolate reductase (DHFR) downregulated cancer cell expression of cluster of differentiation 24 (CD24), an anti-phagocytic surface protein. Genetic modulation of DHFR resulted in decrease of CD24 expression, whereas tetrahydrofolate, the product of DHFR, enhanced CD24 expression. DHFR inhibition and the consequent CD24 decrease enhanced T cell-mediated tumor cell killing, whereas replenishment of DHFR or CD24 partially mitigated the immune-mediated tumor cell killing that resulted from methotrexate treatment in cancer cells. Moreover, publicly available clinical data analyses further revealed the link between DHFR, CD24, and the antitumor immune response in lung cancer patients. Our study highlights a novel connection between folate metabolism and the anti-tumor immune response and partially interprets how DHFR inhibitors lead to clinical benefits when combined with cancer immunotherapy agents.
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Affiliation(s)
- Austin C. Boese
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, Georgia 30322, USA. Emory University, Atlanta, Georgia 30322, USA
- These authors contributed equally to this work
| | - Jung Seok Hwang
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, Georgia 30322, USA. Emory University, Atlanta, Georgia 30322, USA
- These authors contributed equally to this work
| | - Isabelle Young
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, Georgia 30322, USA. Emory University, Atlanta, Georgia 30322, USA
- Current address: Department of Pediatrics, University of California San Francisco, San Francisco, California 94143, USA
- These authors contributed equally to this work
| | - Courteney M. Malin
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, Georgia 30322, USA. Emory University, Atlanta, Georgia 30322, USA
| | - Vanessa Avalos
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, Georgia 30322, USA. Emory University, Atlanta, Georgia 30322, USA
| | - JiHoon Kang
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, Georgia 30322, USA. Emory University, Atlanta, Georgia 30322, USA
| | - Sumin Kang
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory, Emory University School of Medicine, Atlanta, Georgia 30322, USA. Emory University, Atlanta, Georgia 30322, USA
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Wang W, Cui J, Ma H, Lu W, Huang J. Targeting Pyrimidine Metabolism in the Era of Precision Cancer Medicine. Front Oncol 2021; 11:684961. [PMID: 34123854 PMCID: PMC8194085 DOI: 10.3389/fonc.2021.684961] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 04/27/2021] [Indexed: 12/26/2022] Open
Abstract
Metabolic rewiring is considered as a primary feature of cancer. Malignant cells reprogram metabolism pathway in response to various intrinsic and extrinsic drawback to fuel cell survival and growth. Among the complex metabolic pathways, pyrimidine biosynthesis is conserved in all living organism and is necessary to maintain cellular fundamental function (i.e. DNA and RNA biosynthesis). A wealth of evidence has demonstrated that dysfunction of pyrimidine metabolism is closely related to cancer progression and numerous drugs targeting pyrimidine metabolism have been approved for multiple types of cancer. However, the non-negligible side effects and limited efficacy warrants a better strategy for negating pyrimidine metabolism in cancer. In recent years, increased studies have evidenced the interplay of oncogenic signaling and pyrimidine synthesis in tumorigenesis. Here, we review the recent conceptual advances on pyrimidine metabolism, especially dihydroorotate dehydrogenase (DHODH), in the framework of precision oncology medicine and prospect how this would guide the development of new drug precisely targeting the pyrimidine metabolism in cancer.
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Affiliation(s)
- Wanyan Wang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Jiayan Cui
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Hui Ma
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Weiqiang Lu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Jin Huang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, China
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Zhou Y, Tao L, Zhou X, Zuo Z, Gong J, Liu X, Zhou Y, Liu C, Sang N, Liu H, Zou J, Gou K, Yang X, Zhao Y. DHODH and cancer: promising prospects to be explored. Cancer Metab 2021; 9:22. [PMID: 33971967 PMCID: PMC8107416 DOI: 10.1186/s40170-021-00250-z] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 03/10/2021] [Indexed: 02/08/2023] Open
Abstract
Human dihydroorotate dehydrogenase (DHODH) is a flavin-dependent mitochondrial enzyme catalyzing the fourth step in the de novo pyrimidine synthesis pathway. It is originally a target for the treatment of the non-neoplastic diseases involving in rheumatoid arthritis and multiple sclerosis, and is re-emerging as a validated therapeutic target for cancer therapy. In this review, we mainly unravel the biological function of DHODH in tumor progression, including its crucial role in de novo pyrimidine synthesis and mitochondrial respiratory chain in cancer cells. Moreover, various DHODH inhibitors developing in the past decades are also been displayed, and the specific mechanism between DHODH and its additional effects are illustrated. Collectively, we detailly discuss the association between DHODH and tumors in recent years here, and believe it will provide significant evidences and potential strategies for utilizing DHODH as a potential target in preclinical and clinical cancer therapies.
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Affiliation(s)
- Yue Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Lei Tao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Xia Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Zeping Zuo
- The Laboratory of Anesthesiology and Critical Care Medicine, Translational Neuroscience Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Jin Gong
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Xiaocong Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Yang Zhou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Chunqi Liu
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Na Sang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Huan Liu
- West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Jiao Zou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Kun Gou
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Xiaowei Yang
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China
| | - Yinglan Zhao
- State Key Laboratory of Biotherapy and Cancer Center, West China Hospital, Sichuan University, and Collaborative Innovation Center for Biotherapy, Chengdu, 610041, China. .,West China School of Pharmacy, Sichuan University, Chengdu, 610041, China.
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Je H, Nam GH, Kim GB, Kim W, Kim SR, Kim IS, Lee EJ. Overcoming therapeutic efficiency limitations against TRAIL-resistant tumors using re-sensitizing agent-loaded trimeric TRAIL-presenting nanocages. J Control Release 2021; 331:7-18. [DOI: 10.1016/j.jconrel.2021.01.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 12/18/2020] [Accepted: 01/08/2021] [Indexed: 12/18/2022]
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8
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Gaidano V, Houshmand M, Vitale N, Carrà G, Morotti A, Tenace V, Rapelli S, Sainas S, Pippione AC, Giorgis M, Boschi D, Lolli ML, Cilloni D, Cignetti A, Saglio G, Circosta P. The Synergism between DHODH Inhibitors and Dipyridamole Leads to Metabolic Lethality in Acute Myeloid Leukemia. Cancers (Basel) 2021; 13:1003. [PMID: 33670894 PMCID: PMC7957697 DOI: 10.3390/cancers13051003] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/15/2021] [Accepted: 02/22/2021] [Indexed: 12/20/2022] Open
Abstract
Dihydroorotate Dehydrogenase (DHODH) is a key enzyme of the de novo pyrimidine biosynthesis, whose inhibition can induce differentiation and apoptosis in acute myeloid leukemia (AML). DHODH inhibitors had shown promising in vitro and in vivo activity on solid tumors, but their effectiveness was not confirmed in clinical trials, probably because cancer cells exploited the pyrimidine salvage pathway to survive. Here, we investigated the antileukemic activity of MEDS433, the DHODH inhibitor developed by our group, against AML. Learning from previous failures, we mimicked human conditions (performing experiments in the presence of physiological uridine plasma levels) and looked for synergic combinations to boost apoptosis, including classical antileukemic drugs and dipyridamole, a blocker of the pyrimidine salvage pathway. MEDS433 induced apoptosis in multiple AML cell lines, not only as a consequence of differentiation, but also directly. Its combination with antileukemic agents further increased the apoptotic rate, but when experiments were performed in the presence of physiological uridine concentrations, results were less impressive. Conversely, the combination of MEDS433 with dipyridamole induced metabolic lethality and differentiation in all AML cell lines; this extraordinary synergism was confirmed on AML primary cells with different genetic backgrounds and was unaffected by physiological uridine concentrations, predicting in human activity.
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Affiliation(s)
- Valentina Gaidano
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043 Turin, Italy; (M.H.); (G.C.); (A.M.); (D.C.); (G.S.); (P.C.)
- Division of Hematology, A.O. SS Antonio e Biagio e Cesare Arrigo, 15121 Alessandria, Italy
| | - Mohammad Houshmand
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043 Turin, Italy; (M.H.); (G.C.); (A.M.); (D.C.); (G.S.); (P.C.)
- Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy;
| | - Nicoletta Vitale
- Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy;
- Department of Medical Sciences, University of Turin, 10124 Turin, Italy
| | - Giovanna Carrà
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043 Turin, Italy; (M.H.); (G.C.); (A.M.); (D.C.); (G.S.); (P.C.)
- Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy;
| | - Alessandro Morotti
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043 Turin, Italy; (M.H.); (G.C.); (A.M.); (D.C.); (G.S.); (P.C.)
| | - Valerio Tenace
- Department of Electrical and Computer Engineering, University of Utah, Salt Lake City, UT 84112, USA;
| | - Stefania Rapelli
- Department of Life Sciences and System Biology, University of Turin, 10124 Turin, Italy;
| | - Stefano Sainas
- Department of Drug Science and Technology, University of Turin, 10124 Turin, Italy; (S.S.); (A.C.P.); (M.G.); (D.B.); (M.L.L.)
| | - Agnese Chiara Pippione
- Department of Drug Science and Technology, University of Turin, 10124 Turin, Italy; (S.S.); (A.C.P.); (M.G.); (D.B.); (M.L.L.)
| | - Marta Giorgis
- Department of Drug Science and Technology, University of Turin, 10124 Turin, Italy; (S.S.); (A.C.P.); (M.G.); (D.B.); (M.L.L.)
| | - Donatella Boschi
- Department of Drug Science and Technology, University of Turin, 10124 Turin, Italy; (S.S.); (A.C.P.); (M.G.); (D.B.); (M.L.L.)
| | - Marco Lucio Lolli
- Department of Drug Science and Technology, University of Turin, 10124 Turin, Italy; (S.S.); (A.C.P.); (M.G.); (D.B.); (M.L.L.)
| | - Daniela Cilloni
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043 Turin, Italy; (M.H.); (G.C.); (A.M.); (D.C.); (G.S.); (P.C.)
- University Division of Hematology and Cell Therapy, A.O. Ordine Mauriziano, University of Turin, 10128 Turin, Italy;
| | - Alessandro Cignetti
- University Division of Hematology and Cell Therapy, A.O. Ordine Mauriziano, University of Turin, 10128 Turin, Italy;
| | - Giuseppe Saglio
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043 Turin, Italy; (M.H.); (G.C.); (A.M.); (D.C.); (G.S.); (P.C.)
- University Division of Hematology and Cell Therapy, A.O. Ordine Mauriziano, University of Turin, 10128 Turin, Italy;
| | - Paola Circosta
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, 10043 Turin, Italy; (M.H.); (G.C.); (A.M.); (D.C.); (G.S.); (P.C.)
- Molecular Biotechnology Center, University of Turin, 10126 Turin, Italy;
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Kadir MFA, Othman S, Nellore K. Dihydroorotate Dehydrogenase Inhibitors Promote Cell Cycle Arrest and Disrupt Mitochondria Bioenergetics in Ramos Cells. Curr Pharm Biotechnol 2021; 21:1654-1665. [PMID: 32525770 DOI: 10.2174/1389201021666200611113734] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 04/10/2020] [Accepted: 05/18/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND The re-emerging of targeting Dihydroorotate Dehydrogenase (DHODH) in cancer treatment particularly Acute Myelogenous Leukemia (AML) has corroborated the substantial role of DHODH in cancer and received the attention of many pharmaceutical industries. OBJECTIVE The effects of Brequinar Sodium (BQR) and 4SC-101 on lymphoblastoid cell lines were investigated. METHODS DHODH expression and cell proliferation inhibition of lymphoblastoid and lymphoma cell lines were analyzed using Western blot analysis and XTT assay, respectively. JC-1 probe and ATP biochemiluminescence kit were used to evaluate the mitochondrial membrane potential and ATP generation in these cell lines. Furthermore, we explored the cell cycle progression using Muse™ Cell Cycle Kit. RESULTS Ramos, SUDHL-1 and RPMI-1788 cells are fast-growing cells with equal expression of DHODH enzyme and sensitivity to DHODH inhibitors that showed that the inhibition of DHODH was not cancer-specific. In ATP depletion assay, the non-cancerous RPMI-1788 cells showed only a minor ATP reduction compared to Ramos and SUDHL-1 (cancer) cells. In the mechanistic impact of DHODH inhibitors on non-cancerous vs cancerous cells, the mitochondrial membrane potential assay revealed that significant depolarization and cytochrome c release occurred with DHODH inhibitors treatment in Ramos but not in the RPMI-1788 cells, indicating a different mechanism of proliferation inhibition in normal cells. CONCLUSION The findings of this study provide evidence that DHODH inhibitors perturb the proliferation of non-cancerous cells via a distinct mechanism compared to cancerous cells. These results may lead to strategies for overcoming the impact on non-cancerous cells during treatment with DHODH inhibitors, leading to a better therapeutic window in patients.
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Affiliation(s)
- Mohamad F A Kadir
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Shatrah Othman
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Kavitha Nellore
- Department of Cell and Molecular Biology, Aurigene Discovery Technologies Pte Ltd, Bangalore, Karnataka, India
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10
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Abstract
ATP is required for mammalian cells to remain viable and to perform genetically programmed functions. Maintenance of the ΔG′ATP hydrolysis of −56 kJ/mole is the endpoint of both genetic and metabolic processes required for life. Various anomalies in mitochondrial structure and function prevent maximal ATP synthesis through OxPhos in cancer cells. Little ATP synthesis would occur through glycolysis in cancer cells that express the dimeric form of pyruvate kinase M2. Mitochondrial substrate level phosphorylation (mSLP) in the glutamine-driven glutaminolysis pathway, substantiated by the succinate-CoA ligase reaction in the TCA cycle, can partially compensate for reduced ATP synthesis through both OxPhos and glycolysis. A protracted insufficiency of OxPhos coupled with elevated glycolysis and an auxiliary, fully operational mSLP, would cause a cell to enter its default state of unbridled proliferation with consequent dedifferentiation and apoptotic resistance, i.e., cancer. The simultaneous restriction of glucose and glutamine offers a therapeutic strategy for managing cancer.
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Affiliation(s)
- Thomas N Seyfried
- Biology Department, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02467, USA
| | - Gabriel Arismendi-Morillo
- Electron Microscopy Laboratory, Biological Researches Institute, Faculty of Medicine, University of Zulia, Maracaibo, Venezuela
| | - Purna Mukherjee
- Biology Department, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02467, USA
| | - Christos Chinopoulos
- Department of Medical Biochemistry, Semmelweis University, Budapest, 1094, Hungary
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11
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Coelho AR, Oliveira PJ. Dihydroorotate dehydrogenase inhibitors in SARS-CoV-2 infection. Eur J Clin Invest 2020; 50:e13366. [PMID: 32735689 PMCID: PMC7435507 DOI: 10.1111/eci.13366] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 07/23/2020] [Accepted: 07/23/2020] [Indexed: 12/13/2022]
Affiliation(s)
- Ana R Coelho
- CNC-Center for Neuroscience and Cell Biology, UC-Biotech, University of Coimbra, Cantanhede, Portugal
| | - Paulo J Oliveira
- CNC-Center for Neuroscience and Cell Biology, UC-Biotech, University of Coimbra, Cantanhede, Portugal
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12
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Boukalova S, Hubackova S, Milosevic M, Ezrova Z, Neuzil J, Rohlena J. Dihydroorotate dehydrogenase in oxidative phosphorylation and cancer. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165759. [PMID: 32151633 DOI: 10.1016/j.bbadis.2020.165759] [Citation(s) in RCA: 66] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 03/03/2020] [Accepted: 03/04/2020] [Indexed: 12/12/2022]
Abstract
Dihydroorotate dehydrogenase (DHODH) is an enzyme of the de novo pyrimidine synthesis pathway that provides nucleotides for RNA/DNA synthesis essential for proliferation. In mammalian cells, DHODH is localized in mitochondria, linked to the respiratory chain via the coenzyme Q pool. Here we discuss the role of DHODH in the oxidative phosphorylation system and in the initiation and progression of cancer. We summarize recent findings on DHODH biology, the progress made in the development of new, specific inhibitors of DHODH intended for cancer therapy, and the mechanistic insights into the consequences of DHODH inhibition.
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Affiliation(s)
- Stepana Boukalova
- Institute of Biotechnology, Czech Academy of Sciences, BIOCEV, 252 50 Vestec, Prague-West, Czech Republic
| | - Sona Hubackova
- Institute of Biotechnology, Czech Academy of Sciences, BIOCEV, 252 50 Vestec, Prague-West, Czech Republic
| | - Mirko Milosevic
- Institute of Biotechnology, Czech Academy of Sciences, BIOCEV, 252 50 Vestec, Prague-West, Czech Republic
| | - Zuzana Ezrova
- Institute of Biotechnology, Czech Academy of Sciences, BIOCEV, 252 50 Vestec, Prague-West, Czech Republic; Faculty of Science, Charles University, Prague, Czech Republic
| | - Jiri Neuzil
- Institute of Biotechnology, Czech Academy of Sciences, BIOCEV, 252 50 Vestec, Prague-West, Czech Republic; School of Medical Science, Griffith University, Southport, 4222, Qld, Australia
| | - Jakub Rohlena
- Institute of Biotechnology, Czech Academy of Sciences, BIOCEV, 252 50 Vestec, Prague-West, Czech Republic.
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Energy Metabolism Rewiring Precedes UVB-Induced Primary Skin Tumor Formation. Cell Rep 2019; 23:3621-3634. [PMID: 29925003 DOI: 10.1016/j.celrep.2018.05.060] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 04/05/2018] [Accepted: 05/17/2018] [Indexed: 12/22/2022] Open
Abstract
Although growing evidence indicates that bioenergetic metabolism plays an important role in the progression of tumorigenesis, little information is available on the contribution of reprogramming of energy metabolism in cancer initiation. By applying a quantitative proteomic approach and targeted metabolomics, we find that specific metabolic modifications precede primary skin tumor formation. Using a multistage model of ultraviolet B (UVB) radiation-induced skin cancer, we show that glycolysis, tricarboxylic acid (TCA) cycle, and fatty acid β-oxidation are decreased at a very early stage of photocarcinogenesis, while the distal part of the electron transport chain (ETC) is upregulated. Reductive glutamine metabolism and the activity of dihydroorotate dehydrogenase (DHODH) are both necessary for maintaining high ETC. Mice with decreased DHODH activity or impaired ETC failed to develop pre-malignant and malignant lesions. DHODH activity represents a major link between DNA repair efficiency and bioenergetic patterning during skin carcinogenesis.
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Sharma A, Boise LH, Shanmugam M. Cancer Metabolism and the Evasion of Apoptotic Cell Death. Cancers (Basel) 2019; 11:E1144. [PMID: 31405035 PMCID: PMC6721599 DOI: 10.3390/cancers11081144] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 07/29/2019] [Accepted: 08/08/2019] [Indexed: 12/19/2022] Open
Abstract
Cellular growth and proliferation depend upon the acquisition and synthesis of specific metabolites. These metabolites fuel the bioenergy, biosynthesis, and redox potential required for duplication of cellular biomass. Multicellular organisms maintain tissue homeostasis by balancing signals promoting proliferation and removal of cells via apoptosis. While apoptosis is in itself an energy dependent process activated by intrinsic and extrinsic signals, whether specific nutrient acquisition (elevated or suppressed) and their metabolism regulates apoptosis is less well investigated. Normal cellular metabolism is regulated by lineage specific intrinsic features and microenvironment driven extrinsic features. In the context of cancer, genetic abnormalities, unconventional microenvironments and/or therapy engage constitutive pro-survival signaling to re-program and rewire metabolism to maintain survival, growth, and proliferation. It thus becomes particularly relevant to understand whether altered nutrient acquisition and metabolism in cancer can also contribute to the evasion of apoptosis and consequently therapy resistance. Our review attempts to dissect a causal relationship between two cancer hallmarks, i.e., deregulated cellular energetics and the evasion of programmed cell death with primary focus on the intrinsic pathway of apoptosis.
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Affiliation(s)
- Aditi Sharma
- Department of Hematology and Medical Oncology, Winship Cancer Institute, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Lawrence H Boise
- Department of Hematology and Medical Oncology, Winship Cancer Institute, School of Medicine, Emory University, Atlanta, GA 30322, USA
| | - Mala Shanmugam
- Department of Hematology and Medical Oncology, Winship Cancer Institute, School of Medicine, Emory University, Atlanta, GA 30322, USA.
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15
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Jones CC, Bradford Y, Amos CI, Blot WJ, Chanock SJ, Harris CC, Schwartz AG, Spitz MR, Wiencke JK, Wrensch MR, Wu X, Aldrich MC. Cross-Cancer Pleiotropic Associations with Lung Cancer Risk in African Americans. Cancer Epidemiol Biomarkers Prev 2019; 28:715-723. [PMID: 30894353 PMCID: PMC6449205 DOI: 10.1158/1055-9965.epi-18-0935] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/02/2018] [Accepted: 12/31/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Identifying genetic variants with pleiotropic associations across multiple cancers can reveal shared biologic pathways. Prior pleiotropic studies have primarily focused on European-descent individuals. Yet population-specific genetic variation can occur, and potential pleiotropic associations among diverse racial/ethnic populations could be missed. We examined cross-cancer pleiotropic associations with lung cancer risk in African Americans. METHODS We conducted a pleiotropic analysis among 1,410 African American lung cancer cases and 2,843 controls. We examined 36,958 variants previously associated (or in linkage disequilibrium) with cancer in prior genome-wide association studies. Logistic regression analyses were conducted, adjusting for age, sex, global ancestry, study site, and smoking status. RESULTS We identified three novel genomic regions significantly associated (FDR-corrected P <0.10) with lung cancer risk (rs336958 on 5q14.3, rs7186207 on 16q22.2, and rs11658063 on 17q12). On chromosome16q22.2, rs7186207 was significantly associated with reduced risk [OR = 0.43; 95% confidence interval (CI), 0.73-0.89], and functional annotation using GTEx showed rs7186207 modifies DHODH gene expression. The minor allele at rs336958 on 5q14.3 was associated with increased lung cancer risk (OR = 1.47; 95% CI, 1.22-1.78), whereas the minor allele at rs11658063 on 17q12 was associated with reduced risk (OR = 0.80; 95% CI, 0.72-0.90). CONCLUSIONS We identified novel associations on chromosomes 5q14.3, 16q22.2, and 17q12, which contain HNF1B, DHODH, and HAPLN1 genes, respectively. SNPs within these regions have been previously associated with multiple cancers. This is the first study to examine cross-cancer pleiotropic associations for lung cancer in African Americans. IMPACT Our findings demonstrate novel cross-cancer pleiotropic associations with lung cancer risk in African Americans.
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Affiliation(s)
- Carissa C Jones
- Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee
- Vanderbilt Genetics Institute, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Yuki Bradford
- School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | | | - William J Blot
- Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Stephen J Chanock
- Division of Cancer Epidemiology and Genetics, NCI, Bethesda, Maryland
| | | | - Ann G Schwartz
- Karmanos Cancer Institute, Wayne State University, Detroit, Michigan
| | - Margaret R Spitz
- Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - John K Wiencke
- Department of Neurological Surgery, University of California San Francisco, San Francisco, California
| | - Margaret R Wrensch
- Department of Neurological Surgery, University of California San Francisco, San Francisco, California
- Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California
- Institute of Human Genetics, University of California San Francisco, San Francisco, California
| | - Xifeng Wu
- Department of Epidemiology, Division of Cancer Prevention and Population Sciences, University of Texas MD Anderson Cancer Center, Houston, Texas
| | - Melinda C Aldrich
- Department of Thoracic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.
- Vanderbilt Genetics Institute, Vanderbilt University Medical Center, Nashville, Tennessee
- Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
- Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, Tennessee
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16
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Teh JT, Zhu WL, Newgard CB, Casey PJ, Wang M. Respiratory Capacity and Reserve Predict Cell Sensitivity to Mitochondria Inhibitors: Mechanism-Based Markers to Identify Metformin-Responsive Cancers. Mol Cancer Ther 2019; 18:693-705. [DOI: 10.1158/1535-7163.mct-18-0766] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Revised: 11/22/2018] [Accepted: 01/14/2019] [Indexed: 11/16/2022]
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17
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Bajzikova M, Kovarova J, Coelho AR, Boukalova S, Oh S, Rohlenova K, Svec D, Hubackova S, Endaya B, Judasova K, Bezawork-Geleta A, Kluckova K, Chatre L, Zobalova R, Novakova A, Vanova K, Ezrova Z, Maghzal GJ, Magalhaes Novais S, Olsinova M, Krobova L, An YJ, Davidova E, Nahacka Z, Sobol M, Cunha-Oliveira T, Sandoval-Acuña C, Strnad H, Zhang T, Huynh T, Serafim TL, Hozak P, Sardao VA, Koopman WJH, Ricchetti M, Oliveira PJ, Kolar F, Kubista M, Truksa J, Dvorakova-Hortova K, Pacak K, Gurlich R, Stocker R, Zhou Y, Berridge MV, Park S, Dong L, Rohlena J, Neuzil J. Reactivation of Dihydroorotate Dehydrogenase-Driven Pyrimidine Biosynthesis Restores Tumor Growth of Respiration-Deficient Cancer Cells. Cell Metab 2019; 29:399-416.e10. [PMID: 30449682 PMCID: PMC7484595 DOI: 10.1016/j.cmet.2018.10.014] [Citation(s) in RCA: 168] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 08/04/2018] [Accepted: 10/24/2018] [Indexed: 12/29/2022]
Abstract
Cancer cells without mitochondrial DNA (mtDNA) do not form tumors unless they reconstitute oxidative phosphorylation (OXPHOS) by mitochondria acquired from host stroma. To understand why functional respiration is crucial for tumorigenesis, we used time-resolved analysis of tumor formation by mtDNA-depleted cells and genetic manipulations of OXPHOS. We show that pyrimidine biosynthesis dependent on respiration-linked dihydroorotate dehydrogenase (DHODH) is required to overcome cell-cycle arrest, while mitochondrial ATP generation is dispensable for tumorigenesis. Latent DHODH in mtDNA-deficient cells is fully activated with restoration of complex III/IV activity and coenzyme Q redox-cycling after mitochondrial transfer, or by introduction of an alternative oxidase. Further, deletion of DHODH interferes with tumor formation in cells with fully functional OXPHOS, while disruption of mitochondrial ATP synthase has little effect. Our results show that DHODH-driven pyrimidine biosynthesis is an essential pathway linking respiration to tumorigenesis, pointing to inhibitors of DHODH as potential anti-cancer agents.
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Affiliation(s)
- Martina Bajzikova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; Faculty of Science, Charles University, 128 44 Prague, Czech Republic
| | - Jaromira Kovarova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic.
| | - Ana R Coelho
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; CNC - Center for Neuroscience and Cell Biology, University of Coimbra, UC-Biotech, Biocant Park, 3060-197 Cantanhede, Portugal
| | - Stepana Boukalova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Sehyun Oh
- College of Pharmacy, Natural Product Research Institute, Seoul National University, Seoul 08826, Korea
| | - Katerina Rohlenova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - David Svec
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Sona Hubackova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Berwini Endaya
- School of Medical Science, Griffith University, Southport, QLD 4222, Australia
| | - Kristyna Judasova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | | | - Katarina Kluckova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Laurent Chatre
- Department of Developmental and Stem Cell Biology, Institut Pasteur, 75015 Paris, France; CNRS UMR 3738, Team Stability of Nuclear and Mitochondrial DNA, 75015 Paris, France
| | - Renata Zobalova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Anna Novakova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Katerina Vanova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Zuzana Ezrova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; Faculty of Science, Charles University, 128 44 Prague, Czech Republic
| | - Ghassan J Maghzal
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia; St Vincent's Clinical School, UNSW Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Silvia Magalhaes Novais
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; Faculty of Science, Charles University, 128 44 Prague, Czech Republic
| | - Marie Olsinova
- Faculty of Science, Charles University, 128 44 Prague, Czech Republic
| | - Linda Krobova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Yong Jin An
- College of Pharmacy, Natural Product Research Institute, Seoul National University, Seoul 08826, Korea
| | - Eliska Davidova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; Faculty of Science, Charles University, 128 44 Prague, Czech Republic
| | - Zuzana Nahacka
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Margarita Sobol
- Institute of Molecular Genetics, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Teresa Cunha-Oliveira
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, UC-Biotech, Biocant Park, 3060-197 Cantanhede, Portugal
| | - Cristian Sandoval-Acuña
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Hynek Strnad
- Institute of Molecular Genetics, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Tongchuan Zhang
- Institute for Glycomics, Griffith University, Southport, 4222 QLD, Australia
| | - Thanh Huynh
- Eunice Kennedy Shriver Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Teresa L Serafim
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, UC-Biotech, Biocant Park, 3060-197 Cantanhede, Portugal
| | - Pavel Hozak
- Institute of Molecular Genetics, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Vilma A Sardao
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, UC-Biotech, Biocant Park, 3060-197 Cantanhede, Portugal
| | - Werner J H Koopman
- Department of Biochemistry (286), Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, 6525 Nijmegen, the Netherlands
| | - Miria Ricchetti
- Department of Developmental and Stem Cell Biology, Institut Pasteur, 75015 Paris, France; CNRS UMR 3738, Team Stability of Nuclear and Mitochondrial DNA, 75015 Paris, France
| | - Paulo J Oliveira
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, UC-Biotech, Biocant Park, 3060-197 Cantanhede, Portugal
| | - Frantisek Kolar
- Institute of Physiology, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Mikael Kubista
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Jaroslav Truksa
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Katerina Dvorakova-Hortova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; Faculty of Science, Charles University, 128 44 Prague, Czech Republic
| | - Karel Pacak
- Eunice Kennedy Shriver Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Robert Gurlich
- Third Faculty Hospital, Charles University, Prague, Czech Republic
| | - Roland Stocker
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia; St Vincent's Clinical School, UNSW Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Yaoqi Zhou
- Institute for Glycomics, Griffith University, Southport, 4222 QLD, Australia
| | | | - Sunghyouk Park
- College of Pharmacy, Natural Product Research Institute, Seoul National University, Seoul 08826, Korea.
| | - Lanfeng Dong
- School of Medical Science, Griffith University, Southport, QLD 4222, Australia.
| | - Jakub Rohlena
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic.
| | - Jiri Neuzil
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; School of Medical Science, Griffith University, Southport, QLD 4222, Australia.
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18
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Dorasamy MS, Ab A, Nellore K, Wong PF. Synergistic inhibition of melanoma xenografts by Brequinar sodium and Doxorubicin. Biomed Pharmacother 2018; 110:29-36. [PMID: 30458345 DOI: 10.1016/j.biopha.2018.11.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 11/02/2018] [Accepted: 11/02/2018] [Indexed: 10/27/2022] Open
Abstract
Malignant melanoma continues to be a fatal disease for which novel and long-term curative breakthroughs are desired. One such innovative idea would be to assess combination therapeutic treatments - by way of combining two potentially effective and very different therapy. Previously, we have shown that DHODH inhibitors, A771726 and Brequinar sodium (BQR) induced cell growth impairment in melanoma cells. Similar results were seen with DHODH RNA interference (shRNA). In the present study, we showed that combination of BQR with doxorubicin resulted in synergistic and additive cell growth inhibition in these cells. In addition, in vivo studies with this combination of drugs demonstrated an almost 90% tumor regression in nude mice bearing melanoma tumors. Cell cycle regulatory proteins, cyclin B1 and its binding partner pcdc-2 and p21 were significantly downregulated and upregulated respectively following the combined treatment. Given that we have observed synergistic effects with BQR and doxorubicin, both in vitro and in vivo, these drugs potentially represent a new combination in the targeted therapy of melanoma.
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Affiliation(s)
- Mathura Subangari Dorasamy
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, 50603, Malaysia; Aurigene Discovery Technologies, IPPP, University Malaya, Kuala Lumpur, 50603, Malaysia
| | - Aravind Ab
- Aurigene Discovery Technologies Limited, Electronic City, Bangalore, 560100, Karnataka, India
| | - Kavitha Nellore
- Aurigene Discovery Technologies Limited, Electronic City, Bangalore, 560100, Karnataka, India
| | - Pooi-Fong Wong
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, 50603, Malaysia.
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19
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Madak JT, Bankhead A, Cuthbertson CR, Showalter HD, Neamati N. Revisiting the role of dihydroorotate dehydrogenase as a therapeutic target for cancer. Pharmacol Ther 2018; 195:111-131. [PMID: 30347213 DOI: 10.1016/j.pharmthera.2018.10.012] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Identified as a hallmark of cancer, metabolic reprogramming allows cancer cells to rapidly proliferate, resist chemotherapies, invade, metastasize, and survive a nutrient-deprived microenvironment. Rapidly growing cells depend on sufficient concentrations of nucleotides to sustain proliferation. One enzyme essential for the de novo biosynthesis of pyrimidine-based nucleotides is dihydroorotate dehydrogenase (DHODH), a known therapeutic target for multiple diseases. Brequinar, leflunomide, and teriflunomide, all of which are potent DHODH inhibitors, have been clinically evaluated but failed to receive FDA approval for the treatment of cancer. Inhibition of DHODH depletes intracellular pyrimidine nucleotide pools and results in cell cycle arrest in S-phase, sensitization to current chemotherapies, and differentiation in neural crest cells and acute myeloid leukemia (AML). Furthermore, DHODH is a synthetic lethal susceptibility in several oncogenic backgrounds. Therefore, DHODH-targeted therapy has potential value as part of a combination therapy for the treatment of cancer. In this review, we focus on the de novo pyrimidine biosynthesis pathway as a target for cancer therapy, and in particular, DHODH. In the first part, we provide a comprehensive overview of this pathway and its regulation in cancer. We further describe the relevance of DHODH as a target for cancer therapy using bioinformatic analyses. We then explore the preclinical and clinical results of pharmacological strategies to target the de novo pyrimidine biosynthesis pathway, with an emphasis on DHODH. Finally, we discuss potential strategies to harness DHODH as a target for the treatment of cancer.
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Affiliation(s)
- Joseph T Madak
- Department of Medicinal Chemistry, University of Michigan College of Pharmacy, Rogel Cancer Center, Ann Arbor, MI 48109, USA
| | - Armand Bankhead
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA; Department of Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Christine R Cuthbertson
- Department of Medicinal Chemistry, University of Michigan College of Pharmacy, Rogel Cancer Center, Ann Arbor, MI 48109, USA
| | - Hollis D Showalter
- Department of Medicinal Chemistry, University of Michigan College of Pharmacy, Rogel Cancer Center, Ann Arbor, MI 48109, USA.
| | - Nouri Neamati
- Department of Medicinal Chemistry, University of Michigan College of Pharmacy, Rogel Cancer Center, Ann Arbor, MI 48109, USA.
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20
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Feng C, Han X, Chi L, Sun J, Gong F, Shen Y. Synthesis, characterization, and in vitro evaluation of TRAIL-modified, cabazitaxel -loaded polymeric micelles for achieving synergistic anticancer therapy. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2018; 29:1729-1744. [DOI: 10.1080/09205063.2018.1483616] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Caochuan Feng
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai, China
| | - Xiaoxiong Han
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai, China
| | - Lili Chi
- Department of Gastroenterology, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Jing Sun
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai, China
- Shanghai Gebaide Biotechnical Co., Ltd., Shanghai, China
| | - Feirong Gong
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China
| | - Yaling Shen
- State Key Laboratory of Bioreactor Engineering, Shanghai Collaborative Innovation Center for Biomanufacturing Technology, East China University of Science and Technology, Shanghai, China
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21
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Madak JT, Cuthbertson CR, Miyata Y, Tamura S, Petrunak EM, Stuckey JA, Han Y, He M, Sun D, Showalter HD, Neamati N. Design, Synthesis, and Biological Evaluation of 4-Quinoline Carboxylic Acids as Inhibitors of Dihydroorotate Dehydrogenase. J Med Chem 2018; 61:5162-5186. [PMID: 29727569 DOI: 10.1021/acs.jmedchem.7b01862] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We pursued a structure-guided approach toward the development of improved dihydroorotate dehydrogenase (DHODH) inhibitors with the goal of forming new interactions between DHODH and the brequinar class of inhibitors. Two potential residues, T63 and Y356, suitable for novel H-bonding interactions, were identified in the brequinar-binding pocket. Analogues were designed to maintain the essential pharmacophore and form new electrostatic interactions through strategically positioned H-bond accepting groups. This effort led to the discovery of potent quinoline-based analogues 41 (DHODH IC50 = 9.71 ± 1.4 nM) and 43 (DHODH IC50 = 26.2 ± 1.8 nM). A cocrystal structure between 43 and DHODH depicts a novel water mediated H-bond interaction with T63. Additional optimization led to the 1,7-naphthyridine 46 (DHODH IC50 = 28.3 ± 3.3 nM) that forms a novel H-bond with Y356. Importantly, compound 41 possesses significant oral bioavailability ( F = 56%) and an elimination t1/2 = 2.78 h (PO dosing). In conclusion, the data supports further preclinical studies of our lead compounds toward selection of a candidate for early-stage clinical development.
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Affiliation(s)
| | | | | | | | - Elyse M Petrunak
- Life Sciences Institute and Department of Biological Chemistry , University of Michigan , Ann Arbor , Michigan 48109 , United States
| | - Jeanne A Stuckey
- Life Sciences Institute and Department of Biological Chemistry , University of Michigan , Ann Arbor , Michigan 48109 , United States
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22
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Madak JT, Cuthbertson CR, Chen W, Showalter HD, Neamati N. Design, Synthesis, and Characterization of Brequinar Conjugates as Probes to Study DHODH Inhibition. Chemistry 2017; 23:13875-13878. [DOI: 10.1002/chem.201702999] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Indexed: 12/27/2022]
Affiliation(s)
- Joseph T. Madak
- Department of Medicinal Chemistry, College of Pharmacy, and Translational Oncology Program; University of Michigan, North Campus Research Complex; 1600 Huron Parkway Ann Arbor MI 48109 USA
| | - Christine R. Cuthbertson
- Department of Medicinal Chemistry, College of Pharmacy, and Translational Oncology Program; University of Michigan, North Campus Research Complex; 1600 Huron Parkway Ann Arbor MI 48109 USA
| | - Wenmin Chen
- Department of Medicinal Chemistry, College of Pharmacy, and Translational Oncology Program; University of Michigan, North Campus Research Complex; 1600 Huron Parkway Ann Arbor MI 48109 USA
| | - Hollis D. Showalter
- Department of Medicinal Chemistry, College of Pharmacy; University of Michigan; 428 Church St. Ann Arbor MI 48109 USA
| | - Nouri Neamati
- Department of Medicinal Chemistry, College of Pharmacy, and Translational Oncology Program; University of Michigan, North Campus Research Complex; 1600 Huron Parkway Ann Arbor MI 48109 USA
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23
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Dorasamy MS, Choudhary B, Nellore K, Subramanya H, Wong PF. Dihydroorotate dehydrogenase Inhibitors Target c-Myc and Arrest Melanoma, Myeloma and Lymphoma cells at S-phase. J Cancer 2017; 8:3086-3098. [PMID: 28928900 PMCID: PMC5604460 DOI: 10.7150/jca.14835] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2015] [Accepted: 03/05/2017] [Indexed: 02/04/2023] Open
Abstract
Dihydroorotate dehydrogenase (DHODH) is a rate-limiting enzyme in the de novo biosynthesis pathway of pyrimidines. Inhibition of this enzyme impedes cancer cell proliferation but the exact mechanisms of action of these inhibitors in cancer cells are poorly understood. In this study, we showed that cancer cells, namely melanoma, myeloma and lymphoma overexpressed DHODH protein and treatment with A771726 and Brequinar sodium resulted in cell cycle arrest at S-phase. Transfection with DHODH shRNA depleted DHODH protein expression and impeded the proliferation of melanoma cells. shRNA knockdown of DHODH in combination with DHODH inhibitors further reduced the cancer cell proliferation, suggesting that knockdown of DHODH had sensitized the cells to DHODH inhibitors. Cell cycle regulatory proteins, c-Myc and its transcriptional target, p21 were found down- and up-regulated, respectively, following treatment with DHODH inhibitors in melanoma, myeloma and lymphoma cells. Interestingly, knockdown of DHODH by shRNA had also similarly affected the expression of c-Myc and p21 proteins. Our findings suggest that DHODH inhibitors induce cell cycle arrest in cancer cells via additional DHODH-independent pathway that is associated with p21 up-regulation and c-Myc down-regulation. Hence, DHODH inhibitors can be explored as potential therapeutic agents in cancer therapy.
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Affiliation(s)
- Mathura Subangari Dorasamy
- Department of Pharmacology, Faculty of Medicine, 50603 University of Malaya, Kuala Lumpur, Malaysia.,Aurigene Discovery Technologies Limited, Bollaram Road, Miyapur Hyderabad - 500049, Telangana, India
| | - Bhavesh Choudhary
- Aurigene Discovery Technologies Limited, Bollaram Road, Miyapur Hyderabad - 500049, Telangana, India
| | - Kavitha Nellore
- Aurigene Discovery Technologies Limited, 39-40, KIADB Industrial Area, Phase II Electronic City, Hosur Road, Bangalore - 560100 Karnataka, India
| | - Hosahalli Subramanya
- Aurigene Discovery Technologies Limited, 39-40, KIADB Industrial Area, Phase II Electronic City, Hosur Road, Bangalore - 560100 Karnataka, India
| | - Pooi-Fong Wong
- Department of Pharmacology, Faculty of Medicine, 50603 University of Malaya, Kuala Lumpur, Malaysia
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Liu L, Dong Z, Lei Q, Yang J, Hu H, Li Q, Ji Y, Guo L, Zhang Y, Liu Y, Cui H. Inactivation/deficiency of DHODH induces cell cycle arrest and programed cell death in melanoma. Oncotarget 2017; 8:112354-112370. [PMID: 29348830 PMCID: PMC5762515 DOI: 10.18632/oncotarget.19379] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 07/11/2017] [Indexed: 12/21/2022] Open
Abstract
Malignant melanoma (MM) is one of the most malignant tumors and has a very poor prognosis. However, there are no effective drugs to treat this disease. As a kind of iron flavin dependent enzyme, dihydroorotate dehydrogenase (DHODH, EC 1.3.3.1) is the fourth and a key enzyme in the de novo biosynthesis of pyrimidines. Herein, we found that DHODH inactivation/deficiency inhibited melanoma cell proliferation, induced cell cycle arrest at S phase and lead to autophagy in human melanoma cells. Meanwhile, leflunomide treatment induced cell apoptosis and deficiency of DHODH sensitized cells to drug-induced apoptosis in BCL-2 deficient melanoma cells, while not in BCL-2 abundant melanoma cells. Then we found that BCL-2 could rescue apoptosis induced by DHODH inactivation/deficiency. Moreover, BCL-2 also showed to promote cell cycle arrest and to inhibit autophagy induced by leflunomide. To explore the mechanisms underlying autophagy induced by DHODH inhibition, we found that AMPK-Ulk1 axis was activated in this process. Besides, JNK was phosphorylated and activated to phosphorylate BCL-2, which abrogated the interaction between BCL-2 and Beclin1 and then abolished autophagy. Our findings provided evidences for the potential of DHODH used as a drug target for melanoma treatment.
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Affiliation(s)
- Lichao Liu
- Department of Dermatology, The Third Hospital of Hebei Medical University, Shijiazhuang, 050000, China.,State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400715, China
| | - Zhen Dong
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400715, China
| | - Qian Lei
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400715, China
| | - Jie Yang
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400715, China
| | - Huanrong Hu
- Department of Dermatology, The Third Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Qian Li
- Department of Dermatology, The Third Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Yacong Ji
- Department of Dermatology, The Third Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Leiyang Guo
- Department of Dermatology, The Third Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Yanli Zhang
- Department of Dermatology, The Third Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Yaling Liu
- Department of Dermatology, The Third Hospital of Hebei Medical University, Shijiazhuang, 050000, China
| | - Hongjuan Cui
- State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, 400715, China
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25
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Reed MAC, Singhal R, Ludwig C, Carrigan JB, Ward DG, Taniere P, Alderson D, Günther UL. Metabolomic Evidence for a Field Effect in Histologically Normal and Metaplastic Tissues in Patients with Esophageal Adenocarcinoma. Neoplasia 2017; 19:165-174. [PMID: 28152423 PMCID: PMC5288314 DOI: 10.1016/j.neo.2016.11.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 11/01/2016] [Accepted: 11/07/2016] [Indexed: 01/26/2023] Open
Abstract
Patients with Barrett's esophagus (BO) are at increased risk of developing esophageal adenocarcinoma (EAC). Most Barrett's patients, however, do not develop EAC, and there is a need for markers that can identify those most at risk. This study aimed to see if a metabolic signature associated with the development of EAC existed. For this, tissue extracts from patients with EAC, BO, and normal esophagus were analyzed using 1H nuclear magnetic resonance. Where possible, adjacent histologically normal tissues were sampled in those with EAC and BO. The study included 46 patients with EAC, 7 patients with BO, and 68 controls who underwent endoscopy for dyspeptic symptoms with normal appearances. Within the cancer cohort, 9 patients had nonneoplastic Barrett's adjacent to the cancer suitable for biopsy. It was possible to distinguish between histologically normal, BO, and EAC tissue in EAC patients [area under the receiver operator curve (AUROC) 1.00, 0.86, and 0.91] and between histologically benign BO in the presence and absence of EAC (AUROC 0.79). In both these cases, sample numbers limited the power of the models. Comparison of histologically normal tissue proximal to EAC versus that from controls (AUROC 1.00) suggests a strong field effect which may develop prior to overt EAC and hence be useful for identifying patients at high risk of developing EAC. Excellent sensitivity and specificity were found for this model to distinguish histologically normal squamous esophageal mucosa in EAC patients and healthy controls, with 8 metabolites being very significantly altered. This may have potential diagnostic value if a molecular signature can detect tissue from which neoplasms subsequently arise.
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Affiliation(s)
- Michelle A C Reed
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Rishi Singhal
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Christian Ludwig
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - John B Carrigan
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Douglas G Ward
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | | | - Derek Alderson
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, B15 2TT, UK
| | - Ulrich L Günther
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, B15 2TT, UK.
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26
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Fluorescence assay of dihydroorotate dehydrogenase that may become a cancer biomarker. Sci Rep 2017; 7:40670. [PMID: 28084471 PMCID: PMC5233952 DOI: 10.1038/srep40670] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Accepted: 12/09/2016] [Indexed: 12/03/2022] Open
Abstract
We developed an assay method for measuring dihydroorotate dehydrogenase (DHODH) activity in cultured HeLa cells and fibroblasts, and in stage III stomach cancer and adjacent normal tissues from the same patient. The assay comprised enzymatic reaction of DHODH with a large amount of dihydroorotic acid substrate, followed by fluorescence (FL) detection specific for orotic acid using the 4-trifluoromethyl-benzamidoxime fluorogenic reagent. The DHODH activities in the biologically complex samples were readily measured by the assay method. Our data indicate significantly higher DHODH activity in HeLa cells (340 ± 25.9 pmol/105 cells/h) than in normal fibroblasts (54.1 ± 7.40 pmol/105 cells/h), and in malignant tumour tissue (1.10 ± 0.19 nmol/mg total proteins/h) than in adjacent normal tissue (0.24 ± 0.11 nmol/mg total proteins/h). This is the first report that DHODH activity may be a diagnostic biomarker for cancer.
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27
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Min-Wen JC, Yan-Jiang BC, Mishra S, Dai X, Magae J, Shyh-Chang N, Kumar AP, Sethi G. Molecular Targets of Ascochlorin and Its Derivatives for Cancer Therapy. STRESS AND INFLAMMATION IN DISORDERS 2017; 108:199-225. [DOI: 10.1016/bs.apcsb.2017.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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28
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Carrigan JB, Reed MAC, Ludwig C, Khanim FL, Bunce CM, Günther UL. Tracer-Based Metabolic NMR-Based Flux Analysis in a Leukaemia Cell Line. Chempluschem 2016; 81:453-459. [PMID: 27347458 PMCID: PMC4916734 DOI: 10.1002/cplu.201500549] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/24/2016] [Indexed: 11/08/2022]
Abstract
High levels of reactive oxygen species (ROS) have a profound impact on acute myeloid leukaemia cells and can be used to specifically target these cells with novel therapies. We have previously shown how the combination of two redeployed drugs, the contraceptive steroid medroxyprogesterone and the lipid-regulating drug bezafibrate exert anti-leukaemic effects by producing ROS. Here we report a 13C-tracer-based NMR metabolic study to understand how these drugs work in K562 leukaemia cells. Our study shows that [1,2-13C]glucose is incorporated into ribose sugars, indicating activity in oxidative and non-oxidative pentose phosphate pathways alongside lactate production. There is little label incorporation into the tricarboxylic acid cycle from glucose, but much greater incorporation arises from the use of [3-13C]glutamine. The combined medroxyprogesterone and bezafibrate treatment decreases label incorporation from both glucose and glutamine into α-ketoglutarate and increased that for succinate, which is consistent with ROS-mediated conversion of α-ketoglutarate to succinate. Most interestingly, this combined treatment drastically reduced the production of several pyrimidine synthesis intermediates.
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Affiliation(s)
- John B. Carrigan
- Institute of Cancer and Genomics SciencesUniversity of BirminghamBirminghamB15 2TTUK
| | - Michelle A. C. Reed
- Institute of Cancer and Genomics SciencesUniversity of BirminghamBirminghamB15 2TTUK
| | - Christian Ludwig
- Institute of Metabolism and Systems BiologyUniversity of BirminghamBirminghamB15 2TTUK
| | - Farhat L. Khanim
- School of BiosciencesUniversity of BirminghamBirminghamB15 2TTUK
| | | | - Ulrich L. Günther
- Institute of Cancer and Genomics SciencesUniversity of BirminghamBirminghamB15 2TTUK
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29
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Trivedi R, Mishra DP. Trailing TRAIL Resistance: Novel Targets for TRAIL Sensitization in Cancer Cells. Front Oncol 2015; 5:69. [PMID: 25883904 PMCID: PMC4382980 DOI: 10.3389/fonc.2015.00069] [Citation(s) in RCA: 171] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 03/09/2015] [Indexed: 12/15/2022] Open
Abstract
Resistance to chemotherapeutic drugs is the major hindrance in the successful cancer therapy. The tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is a member of the tumor necrosis factor (TNF) family of ligands, which initiates apoptosis in cancer cells through interaction with the death receptors DR4 and DR5. TRAIL is perceived as an attractive chemotherapeutic agent as it specifically targets cancer cells while sparing the normal cells. However, TRAIL therapy has a major limitation as a large number of the cancer develop resistance toward TRAIL and escape from the destruction by the immune system. Therefore, elucidation of the molecular targets and signaling pathways responsible for TRAIL resistance is imperative for devising effective therapeutic strategies for TRAIL resistant cancers. Although, various molecular targets leading to TRAIL resistance are well-studied, recent studies have implicated that the contribution of some key cellular processes toward TRAIL resistance need to be fully elucidated. These processes primarily include aberrant protein synthesis, protein misfolding, ubiquitin regulated death receptor expression, metabolic pathways, epigenetic deregulation, and metastasis. Novel synthetic/natural compounds that could inhibit these defective cellular processes may restore the TRAIL sensitivity and combination therapies with such compounds may resensitize TRAIL resistant cancer cells toward TRAIL-induced apoptosis. In this review, we have summarized the key cellular processes associated with TRAIL resistance and their status as therapeutic targets for novel TRAIL-sensitizing agents.
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Affiliation(s)
- Rachana Trivedi
- Cell Death Research Laboratory, Division of Endocrinology, CSIR-Central Drug Research Institute , Lucknow , India
| | - Durga Prasad Mishra
- Cell Death Research Laboratory, Division of Endocrinology, CSIR-Central Drug Research Institute , Lucknow , India
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30
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Ahn CS, Metallo CM. Mitochondria as biosynthetic factories for cancer proliferation. Cancer Metab 2015; 3:1. [PMID: 25621173 PMCID: PMC4305394 DOI: 10.1186/s40170-015-0128-2] [Citation(s) in RCA: 253] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Accepted: 01/02/2015] [Indexed: 12/17/2022] Open
Abstract
Unchecked growth and proliferation is a hallmark of cancer, and numerous oncogenic mutations reprogram cellular metabolism to fuel these processes. As a central metabolic organelle, mitochondria execute critical biochemical functions for the synthesis of fundamental cellular components, including fatty acids, amino acids, and nucleotides. Despite the extensive interest in the glycolytic phenotype of many cancer cells, tumors contain fully functional mitochondria that support proliferation and survival. Furthermore, tumor cells commonly increase flux through one or more mitochondrial pathways, and pharmacological inhibition of mitochondrial metabolism is emerging as a potential therapeutic strategy in some cancers. Here, we review the biosynthetic roles of mitochondrial metabolism in tumors and highlight specific cancers where these processes are activated.
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Affiliation(s)
- Christopher S Ahn
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093 USA
| | - Christian M Metallo
- Department of Bioengineering, University of California, San Diego, La Jolla, CA 92093 USA ; Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093 USA
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