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Selarka K, Shravage BV. Illuminating intercellular autophagy: A comprehensive review of cell non-autonomous autophagy. Biochem Biophys Res Commun 2024; 716:150024. [PMID: 38701555 DOI: 10.1016/j.bbrc.2024.150024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Accepted: 04/26/2024] [Indexed: 05/05/2024]
Abstract
Macro-autophagy (autophagy hereafter) is an evolutionarily conserved cellular process that has long been recognized as an intracellular mechanism for maintaining cellular homeostasis. It involves the formation of a membraned structure called the autophagosome, which carries cargo that includes toxic protein aggregates and dysfunctional organelles to the lysosome for degradation and recycling. Autophagy is primarily considered and studied as a cell-autonomous mechanism. However, recent studies have illuminated an underappreciated facet of autophagy, i.e., non-autonomously regulated autophagy. Non-autonomously regulated autophagy involves the degradation of autophagic components, including organelles, cargo, and signaling molecules, and is induced in neighboring cells by signals from primary adjacent or distant cells/tissues/organs. This review provides insight into the complex molecular mechanisms governing non-autonomously regulated autophagy, highlighting the dynamic interplay between cells within tissue/organ or distinct cell types in different tissues/organs. Emphasis is placed on modes of intercellular communication that include secreted molecules, including microRNAs, and their regulatory roles in orchestrating this phenomenon. Furthermore, we explore the multidimensional roles of non-autonomously regulated autophagy in various physiological contexts, spanning tissue development and aging, as well as its importance in diverse pathological conditions, including cancer and neurodegeneration. By studying the complexities of non-autonomously regulated autophagy, we hope to gain insights into the sophisticated intercellular dynamics within multicellular organisms, including mammals. These studies will uncover novel avenues for therapeutic intervention to modulate intercellular autophagic pathways in altered human physiology.
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Affiliation(s)
- Karan Selarka
- Developmental Biology Group, MACS-Agharkar Research Institute, Pune, India; Department of Biotechnology, Savitribai Phule Pune University, Pune, India
| | - Bhupendra V Shravage
- Developmental Biology Group, MACS-Agharkar Research Institute, Pune, India; Department of Biotechnology, Savitribai Phule Pune University, Pune, India; Department of Zoology, Savitribai Phule Pune University, Pune, India.
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2
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Zhang J, Chen M, Yang Y, Liu Z, Guo W, Xiang P, Zeng Z, Wang D, Xiong W. Amino acid metabolic reprogramming in the tumor microenvironment and its implication for cancer therapy. J Cell Physiol 2024. [PMID: 38946173 DOI: 10.1002/jcp.31349] [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: 01/30/2024] [Revised: 06/08/2024] [Accepted: 06/14/2024] [Indexed: 07/02/2024]
Abstract
Amino acids are essential building blocks for proteins, crucial energy sources for cell survival, and key signaling molecules supporting the resistant growth of tumor cells. In tumor cells, amino acid metabolic reprogramming is characterized by the enhanced uptake of amino acids as well as their aberrant synthesis, breakdown, and transport, leading to immune evasion and malignant progression of tumor cells. This article reviews the altered amino acid metabolism in tumor cells and its impact on tumor microenvironment, and also provides an overview of the current clinical applications of amino acid metabolism. Innovative drugs targeting amino acid metabolism hold great promise for precision and personalized cancer therapy.
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Affiliation(s)
- Jiarong Zhang
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
- Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Mingjian Chen
- Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Yuxin Yang
- Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Ziqi Liu
- Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Wanni Guo
- Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Pingjuan Xiang
- Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Zhaoyang Zeng
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
- Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Dan Wang
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
- Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
| | - Wei Xiong
- NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
- Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Cancer Research Institute, Central South University, Changsha, China
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3
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Zhang Q, Zhou J, Zhai D, Jiang Q, Yang M, Zhou M. Gut microbiota regulates the ALK5/NOX1 axis by altering glutamine metabolism to inhibit ferroptosis of intrahepatic cholangiocarcinoma cells. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167152. [PMID: 38582012 DOI: 10.1016/j.bbadis.2024.167152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 03/14/2024] [Accepted: 03/27/2024] [Indexed: 04/08/2024]
Abstract
Intrahepatic cholangiocarcinoma (ICC) is a kind of hepatobiliary tumor that is increasing in incidence and mortality. The gut microbiota plays a role in the onset and progression of cancer, however, the specific mechanism by which the gut microbiota acts on ICC remains unclear. In this study, feces and plasma from healthy controls and ICC patients were collected for 16S rRNA sequencing or metabolomics analysis. Gut microbiota analysis showed that gut microbiota abundance and biodiversity were altered in ICC patients compared with controls. Plasma metabolism analysis showed that the metabolite glutamine content of the ICC patient was significantly higher than that of the controls. KEGG pathway analysis showed that glutamine plays a vital role in ICC. In addition, the use of antibiotics in ICC animals further confirmed that changes in gut microbiota affect changes in glutamine. Further experiments showed that supplementation with glutamine inhibited ferroptosis and downregulated ALK5 and NOX1 expression in HuCCT1 cells. ALK5 overexpression or NOX1 overexpression increased NOX1, p53, PTGS2, ACSL4, LPCAT3, ROS, MDA and Fe2+ and decreased FTH1, SLC7A11 and GSH. Knockdown of NOX1 suppressed FIN56-induced ferroptosis. In vivo, supplementation with glutamine promoted tumor growth. Overexpression of ALK5 repressed tumor growth and induced ferroptosis in nude mice, which could be reversed by the addition of glutamine. Our results suggested that the gut microbiota altered glutamine metabolism to inhibit ferroptosis in ICC by regulating the ALK5/NOX1 axis.
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Affiliation(s)
- Qi Zhang
- Department of Hepatobiliary and Pancreatic Surgery, Xiangya Hospital Central South University, Changsha 410008, China; International Joint Research Center of Minimally Invasive Endoscopic Technology Equipment & Standards, Xiangya Hospital, Central South University, Changsha 410008, China; National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Jixiang Zhou
- Department of Hepatobiliary and Pancreatic Surgery, Xiangya Hospital Central South University, Changsha 410008, China
| | - Denggao Zhai
- Department of Hepatobiliary and Pancreatic Surgery, Xiangya Hospital Central South University, Changsha 410008, China
| | - Qin Jiang
- Department of Ultrasonography, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Manyi Yang
- Department of Hepatobiliary and Pancreatic Surgery, NHC Key Laboratory of Nanobiological Technology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Maojun Zhou
- Department of Oncology, NHC Key Laboratory of Cancer Proteomics, State Local Joint Engineering Laboratory for Anticancer Drugs, Xiangya Hospital, Central South University, Changsha 410008, China.
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Konda S, Batchu UR, Nagendla NK, Velpula S, Matta S, Rupula K, Reddy Shetty P, Mudiam MKR. Silver Nanoparticles Induced Metabolic Perturbations in Pseudomonas aeruginosa: Evaluation Using the UPLC-QTof-MS E Platform. Chem Res Toxicol 2024; 37:20-32. [PMID: 38133952 DOI: 10.1021/acs.chemrestox.3c00154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2023]
Abstract
Silver nanoparticles (AgNPs) have been widely utilized in various biomedical and antimicrobial technologies, displaying broad-spectrum activities against Gram-negative and Gram-positive bacteria including multidrug-resistant strains. However, the emergence of resistance to AgNPs upon repeated exposure and the survival of bacteria after initial exposure to antimicrobial agents pose a threat, as they may lead to the development of new resistant populations. To combat the early stages of antibacterial resistance, systematic analysis is essential to understand the immediate response of bacteria to antimicrobial agents. In this study, green-synthesized AgNPs with a diameter of approximately 14 nm were exposed toPseudomonas aeruginosaat three different inhibitory concentrations and at two different time intervals (1 and 4 h) to investigate the perturbations in the metabolome using liquid chromatography-high-resolution mass spectrometry. MetaboAnalyst 5.0 was employed for univariate and multivariate analysis, and the affected metabolic pathways were constructed using a variable important in projection scores above 1 from PLS-DA. The study revealed significant alterations in metabolites associated with cell wall synthesis, energy metabolism, nucleotide metabolism, the TCA cycle, and anaplerotic intermediates of the TCA cycle. Our investigation aimed to comprehensively understand the effects of green-synthesized AgNPs onP. aeruginosa metabolism, providing a more precise snapshot of the bacterium's physiological state through metabolomics approach.
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Affiliation(s)
- Satyanand Konda
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Analytical & Structural Chemistry Department, CSIR-Indian Institute of Chemical Technology, Tarnaka, Uppal Road, Hyderabad 500007, India
| | - Uma Rajeswari Batchu
- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology (IICT), Hyderabad 500007, India
| | - Narendra Kumar Nagendla
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Analytical & Structural Chemistry Department, CSIR-Indian Institute of Chemical Technology, Tarnaka, Uppal Road, Hyderabad 500007, India
| | - Suresh Velpula
- Department of Biochemistry, University College of Science, Osmania University, Hyderabad 500007, India
| | - Sujitha Matta
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Analytical & Structural Chemistry Department, CSIR-Indian Institute of Chemical Technology, Tarnaka, Uppal Road, Hyderabad 500007, India
| | - Karuna Rupula
- Department of Biochemistry, University College of Science, Osmania University, Hyderabad 500007, India
| | - Prakasham Reddy Shetty
- Organic Synthesis and Process Chemistry Division, CSIR-Indian Institute of Chemical Technology (IICT), Hyderabad 500007, India
| | - Mohana Krishna Reddy Mudiam
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Analytical & Structural Chemistry Department, CSIR-Indian Institute of Chemical Technology, Tarnaka, Uppal Road, Hyderabad 500007, India
- Analytica Division, Institute of Pesticide Formulation Technology (IPFT), Sector-20, Udyog Vihar, Gurugram 122016, Haryana, India
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Sun H, Du T, Yang M, Liu X, Xue X, Chen K, Lang X, Chen X, Wang B, Wang X. Targeting the Subpocket Enables the Discovery of Thiadiazole-Pyridazine Derivatives as Glutaminase C Inhibitors. ACS Med Chem Lett 2023; 14:1455-1466. [PMID: 37849538 PMCID: PMC10577699 DOI: 10.1021/acsmedchemlett.3c00375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 09/26/2023] [Indexed: 10/19/2023] Open
Abstract
As glutaminase C (GAC) has become an attractive target for cancer treatment by regulating glutaminolysis, thus, interest in GAC inhibitors has risen in recent years. Herein, a potential binding subpocket comprising basic residues was identified, and through extensive structure-activity relationship studies, promising inhibitors 11 and 39 were identified with robust GAC inhibitory activity and A549 cell antiproliferative activity. X-ray crystallography of the 11-GAC and 27-GAC complexes revealed a novel binding mode against GAC. The potency of 11 and 27 against GACK320A further highlighted the importance of the binding. Notably, compounds 11 and 39 regulated the cellular metabolite, thereby increasing reactive oxygen species by blocking glutamine metabolism. Compound 11 also exhibited excellent antiproliferative activity in the A549 cell xenograft model. We further proved that 11 is a safe GAC allosteric inhibitor. A basic subpocket is proposed that might provide new strategies for the development of novel GAC inhibitors in the future.
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Affiliation(s)
- Hanyu Sun
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Department of Medicinal Chemistry, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
| | - Tingting Du
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
| | - Minjian Yang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
| | - Xue Liu
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Department of Medicinal Chemistry, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
| | - Xi Xue
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
| | - Kai Chen
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
| | - Xuli Lang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
| | - Xiaoguang Chen
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
| | - Baolian Wang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
| | - Xiaojian Wang
- State Key Laboratory of Bioactive Substances and Functions of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
- Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation, Department of Medicinal Chemistry, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100050, P. R. China
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6
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Ye L, Zhang HM, Zhou BJ, Tang W, Zhou JL. Advancements in Analyzing Tumor Metabolites through Chemical Derivatization-Based Chromatography. J Chromatogr A 2023; 1706:464236. [PMID: 37506465 DOI: 10.1016/j.chroma.2023.464236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023]
Abstract
Understanding the metabolic abnormalities of tumors is crucial for early diagnosis, prognosis, and treatment. Accurate identification and quantification of metabolites in biological samples are essential to investigate the relationship between metabolite variations and tumor development. Common techniques like LC-MS and GC-MS face challenges in measuring aberrant metabolites in tumors due to their strong polarity, isomerism, or low ionization efficiency during MS detection. Chemical derivatization of metabolites offers an effective solution to overcome these challenges. This review focuses on the difficulties encountered in analyzing aberrant metabolites in tumors, the principles behind chemical derivatization methods, and the advancements in analyzing tumor metabolites using derivatization-based chromatography. It serves as a comprehensive reference for understanding the analysis and detection of tumor metabolites, particularly those that are highly polar and exhibit low ionization efficiency.
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Affiliation(s)
- Lu Ye
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines; Engineering Laboratory of Development and Application of Traditional Chinese Medicines; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Hua-Min Zhang
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines; Engineering Laboratory of Development and Application of Traditional Chinese Medicines; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Bing-Jun Zhou
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines; Engineering Laboratory of Development and Application of Traditional Chinese Medicines; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China
| | - Weiyang Tang
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines; Engineering Laboratory of Development and Application of Traditional Chinese Medicines; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China.
| | - Jian-Liang Zhou
- School of Pharmacy, Hangzhou Normal University, Hangzhou 311121, China; Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines; Engineering Laboratory of Development and Application of Traditional Chinese Medicines; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou 311121, China.
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7
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Barreca F, Aventaggiato M, Vitiello L, Sansone L, Russo MA, Mai A, Valente S, Tafani M. SIRT5 Activation and Inorganic Phosphate Binding Reduce Cancer Cell Vitality by Modulating Autophagy/Mitophagy and ROS. Antioxidants (Basel) 2023; 12:1635. [PMID: 37627630 PMCID: PMC10451763 DOI: 10.3390/antiox12081635] [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: 05/29/2023] [Revised: 07/24/2023] [Accepted: 08/12/2023] [Indexed: 08/27/2023] Open
Abstract
Cancer cells show increased glutamine consumption. The glutaminase (GLS) enzyme controls a limiting step in glutamine catabolism. Breast tumors, especially the triple-negative subtype, have a high expression of GLS. Our recent study demonstrated that GLS activity and ammonia production are inhibited by sirtuin 5 (SIRT5). We developed MC3138, a selective SIRT5 activator. Treatment with MC3138 mimicked the deacetylation effect mediated by SIRT5 overexpression. Moreover, GLS activity was regulated by inorganic phosphate (Pi). Considering the interconnected roles of GLS, SIRT5 and Pi in cancer growth, our hypothesis is that activation of SIRT5 and reduction in Pi could represent a valid antitumoral strategy. Treating cells with MC3138 and lanthanum acetate, a Pi chelator, decreased cell viability and clonogenicity. We also observed a modulation of MAP1LC3B and ULK1 with MC3138 and lanthanum acetate. Interestingly, inhibition of the mitophagy marker BNIP3 was observed only in the presence of MC3138. Autophagy and mitophagy modulation were accompanied by an increase in cytosolic and mitochondrial reactive oxygen species (ROS). In conclusion, our results show how SIRT5 activation and/or Pi binding can represent a valid strategy to inhibit cell proliferation by reducing glutamine metabolism and mitophagy, leading to a deleterious accumulation of ROS.
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Affiliation(s)
- Federica Barreca
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy; (F.B.); (M.A.)
| | - Michele Aventaggiato
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy; (F.B.); (M.A.)
| | - Laura Vitiello
- Laboratory of Flow Cytometry, IRCCS San Raffaele Roma, Via di Val Cannuta 247, 00166 Rome, Italy;
| | - Luigi Sansone
- MEBIC Consortium, San Raffaele University, 00166 Rome, Italy; (L.S.); (M.A.R.)
- Cellular and Molecular Pathology, IRCCS San Raffaele Roma, Via di Val Cannuta 247, 00166 Rome, Italy
| | - Matteo Antonio Russo
- MEBIC Consortium, San Raffaele University, 00166 Rome, Italy; (L.S.); (M.A.R.)
- Cellular and Molecular Pathology, IRCCS San Raffaele Roma, Via di Val Cannuta 247, 00166 Rome, Italy
| | - Antonello Mai
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (A.M.); (S.V.)
| | - Sergio Valente
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, 00185 Rome, Italy; (A.M.); (S.V.)
| | - Marco Tafani
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy; (F.B.); (M.A.)
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Perri F, Della Vittoria Scarpati G, Pontone M, Marciano ML, Ottaiano A, Cascella M, Sabbatino F, Guida A, Santorsola M, Maiolino P, Cavalcanti E, Togo G, Ionna F, Caponigro F. Cancer Cell Metabolism Reprogramming and Its Potential Implications on Therapy in Squamous Cell Carcinoma of the Head and Neck: A Review. Cancers (Basel) 2022; 14:cancers14153560. [PMID: 35892820 PMCID: PMC9332433 DOI: 10.3390/cancers14153560] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/11/2022] [Accepted: 07/19/2022] [Indexed: 02/01/2023] Open
Abstract
Carcinogenesis is a multistep process that consists of the transformation of healthy cells into cancer cells. Such an alteration goes through various stages and is closely linked to random mutations of genes that have a key role in the neoplastic phenotype. During carcinogenesis, cancer cells acquire and exhibit several characteristics including sustaining proliferative signaling, evading growth suppressors, resisting cell death, enabling replicative immortality, inducing angiogenesis, activating invasion and metastasis, and expressing an immune phenotype, which allow them to evade recognition and destruction through cognate immune cells. In addition, cancer cells may acquire the ability to reprogram their metabolism in order to further promote growth, survival, and energy production. This phenomenon, termed metabolic reprogramming, is typical of all solid tumors, including squamous carcinomas of the head and neck (SCCHN). In this review, we analyze the genetic and biological mechanisms underlying metabolic reprogramming of SCCHN, focusing on potential therapeutic strategies that are able to counteract it.
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Affiliation(s)
- Francesco Perri
- Medical and Experimental Head and Neck Oncology Unit, INT IRCSS Foundation G. Pascale, 80131 Naples, Italy; (M.P.); (M.L.M.); (F.C.)
- Correspondence: ; Tel.: +39-08159030403
| | | | - Monica Pontone
- Medical and Experimental Head and Neck Oncology Unit, INT IRCSS Foundation G. Pascale, 80131 Naples, Italy; (M.P.); (M.L.M.); (F.C.)
| | - Maria Luisa Marciano
- Medical and Experimental Head and Neck Oncology Unit, INT IRCSS Foundation G. Pascale, 80131 Naples, Italy; (M.P.); (M.L.M.); (F.C.)
| | - Alessandro Ottaiano
- SSD Innovative Therapies for Abdominal metastases, Abdominal Oncology, INT IRCCS Foundation G. Pascale, 80131 Naples, Italy; (A.O.); (M.S.)
| | - Marco Cascella
- Unit of Anestesiology and Pain Therapy, INT IRCCS Foundation G. Pascale, 80131 Naples, Italy;
| | - Francesco Sabbatino
- Oncology Unit, Department of Medicine, Surgery and Dentistry, University of Salerno, Baronissi, 84081 Salerno, Italy;
| | - Agostino Guida
- U.O.C. Odontostomatologia, AORN A. Cardarelli Hospital, 80131 Naples, Italy;
| | - Mariachiara Santorsola
- SSD Innovative Therapies for Abdominal metastases, Abdominal Oncology, INT IRCCS Foundation G. Pascale, 80131 Naples, Italy; (A.O.); (M.S.)
| | - Piera Maiolino
- Pharmacy Unit, INT IRCCS Foundation G. Pascale, 80131 Naples, Italy;
| | - Ernesta Cavalcanti
- Laboratory Medicine, INT IRCCS Foundation G. Pascale, 80131 Naples, Italy;
| | - Giulia Togo
- Maxillofacial Surgery Unit, Department of Neuroscience, Reproductive and Odontostomatological Sciences, University of Naples Federico II, 80131 Naples, Italy;
| | - Franco Ionna
- Otolaryngology Unit, INT IRCCS Foundation G. Pascale, 80131 Naples, Italy;
| | - Francesco Caponigro
- Medical and Experimental Head and Neck Oncology Unit, INT IRCSS Foundation G. Pascale, 80131 Naples, Italy; (M.P.); (M.L.M.); (F.C.)
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9
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Glutamine-Derived Aspartate Biosynthesis in Cancer Cells: Role of Mitochondrial Transporters and New Therapeutic Perspectives. Cancers (Basel) 2022; 14:cancers14010245. [PMID: 35008407 PMCID: PMC8750728 DOI: 10.3390/cancers14010245] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 12/30/2021] [Accepted: 01/01/2022] [Indexed: 12/20/2022] Open
Abstract
Simple Summary In recent years, aspartate has been increasingly acknowledged as a critical player in the metabolism of cancer cells which use this metabolite for nucleotide and protein synthesis and for redox homeostasis. Most intracellular aspartate derives from the mitochondrial catabolism of glutamine. To date at least four mitochondrial transporters have been involved in this metabolic pathway. Their involvement appears to be cancer type-specific and dependent on glutamine availability. Targeting these mitochondrial transporters may represent a new attractive strategy to fight cancer. The aim of this review is to dissect the role of each of these transporters in relation to the type of cancer and the availability of nutrients in the tumoral microenvironment. Abstract Aspartate has a central role in cancer cell metabolism. Aspartate cytosolic availability is crucial for protein and nucleotide biosynthesis as well as for redox homeostasis. Since tumor cells display poor aspartate uptake from the external environment, most of the cellular pool of aspartate derives from mitochondrial catabolism of glutamine. At least four transporters are involved in this metabolic pathway: the glutamine (SLC1A5_var), the aspartate/glutamate (AGC), the aspartate/phosphate (uncoupling protein 2, UCP2), and the glutamate (GC) carriers, the last three belonging to the mitochondrial carrier family (MCF). The loss of one of these transporters causes a paucity of cytosolic aspartate and an arrest of cell proliferation in many different cancer types. The aim of this review is to clarify why different cancers have varying dependencies on metabolite transporters to support cytosolic glutamine-derived aspartate availability. Dissecting the precise metabolic routes that glutamine undergoes in specific tumor types is of upmost importance as it promises to unveil the best metabolic target for therapeutic intervention.
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Yoo HC, Yu YC, Sung Y, Han JM. Glutamine reliance in cell metabolism. Exp Mol Med 2020; 52:1496-1516. [PMID: 32943735 PMCID: PMC8080614 DOI: 10.1038/s12276-020-00504-8] [Citation(s) in RCA: 398] [Impact Index Per Article: 99.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 07/22/2020] [Accepted: 07/27/2020] [Indexed: 12/20/2022] Open
Abstract
As knowledge of cell metabolism has advanced, glutamine has been considered an important amino acid that supplies carbon and nitrogen to fuel biosynthesis. A recent study provided a new perspective on mitochondrial glutamine metabolism, offering mechanistic insights into metabolic adaptation during tumor hypoxia, the emergence of drug resistance, and glutaminolysis-induced metabolic reprogramming and presenting metabolic strategies to target glutamine metabolism in cancer cells. In this review, we introduce the various biosynthetic and bioenergetic roles of glutamine based on the compartmentalization of glutamine metabolism to explain why cells exhibit metabolic reliance on glutamine. Additionally, we examined whether glutamine derivatives contribute to epigenetic regulation associated with tumorigenesis. In addition, in discussing glutamine transporters, we propose a metabolic target for therapeutic intervention in cancer.
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Affiliation(s)
- Hee Chan Yoo
- Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon, 21983, South Korea
| | - Ya Chun Yu
- Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon, 21983, South Korea
| | - Yulseung Sung
- Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon, 21983, South Korea
| | - Jung Min Han
- Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon, 21983, South Korea.
- Department of Integrated OMICS for Biomedical Science, Yonsei University, Seoul, 03722, South Korea.
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Vadlakonda L, Indracanti M, Kalangi SK, Gayatri BM, Naidu NG, Reddy ABM. The Role of Pi, Glutamine and the Essential Amino Acids in Modulating the Metabolism in Diabetes and Cancer. J Diabetes Metab Disord 2020; 19:1731-1775. [PMID: 33520860 DOI: 10.1007/s40200-020-00566-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 06/04/2020] [Indexed: 02/07/2023]
Abstract
Purpose Re-examine the current metabolic models. Methods Review of literature and gene networks. Results Insulin activates Pi uptake, glutamine metabolism to stabilise lipid membranes. Tissue turnover maintains the metabolic health. Current model of intermediary metabolism (IM) suggests glucose is the source of energy, and anaplerotic entry of fatty acids and amino acids into mitochondria increases the oxidative capacity of the TCA cycle to produce the energy (ATP). The reduced cofactors, NADH and FADH2, have different roles in regulating the oxidation of nutrients, membrane potentials and biosynthesis. Trans-hydrogenation of NADH to NADPH activates the biosynthesis. FADH2 sustains the membrane potential during the cell transformations. Glycolytic enzymes assume the non-canonical moonlighting functions, enter the nucleus to remodel the genetic programmes to affect the tissue turnover for efficient use of nutrients. Glycosylation of the CD98 (4F2HC) stabilises the nutrient transporters and regulates the entry of cysteine, glutamine and BCAA into the cells. A reciprocal relationship between the leucine and glutamine entry into cells regulates the cholesterol and fatty acid synthesis and homeostasis in cells. Insulin promotes the Pi transport from the blood to tissues, activates the mitochondrial respiratory activity, and glutamine metabolism, which activates the synthesis of cholesterol and the de novo fatty acids for reorganising and stabilising the lipid membranes for nutrient transport and signal transduction in response to fluctuations in the microenvironmental cues. Fatty acids provide the lipid metabolites, activate the second messengers and protein kinases. Insulin resistance suppresses the lipid raft formation and the mitotic slippage activates the fibrosis and slow death pathways.
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Affiliation(s)
| | - Meera Indracanti
- Institute of Biotechnology, University of Gondar, Gondar, Ethiopia
| | - Suresh K Kalangi
- Amity Stem Cell Institute, Amity University Haryana, Amity Education Valley Pachgaon, Manesar, Gurugram, HR 122413 India
| | - B Meher Gayatri
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, 500046 India
| | - Navya G Naidu
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, 500046 India
| | - Aramati B M Reddy
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, 500046 India
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12
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STAT1 upregulates glutaminase and modulates amino acids and glutathione metabolism. Biochem Biophys Res Commun 2020; 523:672-677. [DOI: 10.1016/j.bbrc.2020.01.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 01/03/2020] [Indexed: 11/19/2022]
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13
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Masisi BK, El Ansari R, Alfarsi L, Rakha EA, Green AR, Craze ML. The role of glutaminase in cancer. Histopathology 2020; 76:498-508. [DOI: 10.1111/his.14014] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 10/05/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Brendah K Masisi
- Nottingham Breast Cancer Research Centre Division of Cancer and Stem Cells School of Medicine University of Nottingham Biodiscovery Institute University Park Nottingham UK
| | - Rokaya El Ansari
- Nottingham Breast Cancer Research Centre Division of Cancer and Stem Cells School of Medicine University of Nottingham Biodiscovery Institute University Park Nottingham UK
| | - Lutfi Alfarsi
- Nottingham Breast Cancer Research Centre Division of Cancer and Stem Cells School of Medicine University of Nottingham Biodiscovery Institute University Park Nottingham UK
| | - Emad A Rakha
- Nottingham Breast Cancer Research Centre Division of Cancer and Stem Cells School of Medicine University of Nottingham Biodiscovery Institute University Park Nottingham UK
| | - Andrew R Green
- Nottingham Breast Cancer Research Centre Division of Cancer and Stem Cells School of Medicine University of Nottingham Biodiscovery Institute University Park Nottingham UK
| | - Madeleine L Craze
- Nottingham Breast Cancer Research Centre Division of Cancer and Stem Cells School of Medicine University of Nottingham Biodiscovery Institute University Park Nottingham UK
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14
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Park CK, Horton NC. Structures, functions, and mechanisms of filament forming enzymes: a renaissance of enzyme filamentation. Biophys Rev 2019; 11:927-994. [PMID: 31734826 PMCID: PMC6874960 DOI: 10.1007/s12551-019-00602-6] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 10/24/2019] [Indexed: 12/19/2022] Open
Abstract
Filament formation by non-cytoskeletal enzymes has been known for decades, yet only relatively recently has its wide-spread role in enzyme regulation and biology come to be appreciated. This comprehensive review summarizes what is known for each enzyme confirmed to form filamentous structures in vitro, and for the many that are known only to form large self-assemblies within cells. For some enzymes, studies describing both the in vitro filamentous structures and cellular self-assembly formation are also known and described. Special attention is paid to the detailed structures of each type of enzyme filament, as well as the roles the structures play in enzyme regulation and in biology. Where it is known or hypothesized, the advantages conferred by enzyme filamentation are reviewed. Finally, the similarities, differences, and comparison to the SgrAI endonuclease system are also highlighted.
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Affiliation(s)
- Chad K. Park
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, AZ 85721 USA
| | - Nancy C. Horton
- Department of Molecular and Cellular Biology, University of Arizona, Tucson, AZ 85721 USA
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McDermott L, Koes D, Mohammed S, Iyer P, Boby M, Balasubramanian V, Geedy M, Katt W, Cerione R. GAC inhibitors with a 4-hydroxypiperidine spacer: Requirements for potency. Bioorg Med Chem Lett 2019; 29:126632. [PMID: 31474484 DOI: 10.1016/j.bmcl.2019.126632] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 08/19/2019] [Accepted: 08/20/2019] [Indexed: 01/21/2023]
Abstract
Allosteric inhibitors of glutaminase (GAC), such as BPTES, CB-839 and UPGL00019, have great promise as inhibitors of cancer cell growth, but potent inhibitors with drug-like qualities have been difficult to achieve. Here, a small library of GAC inhibitors based on the UPGL00019 core is described. This set of derivatives was designed to assess if one or both of the phenylacetyl groups flanking the UPGL00019 core can be replaced by smaller simple aliphatic acyl groups without loss in potency. We found that one of the phenylacetyl moieties can be replaced by a set of small aliphatic moieties without loss in potency. We also found that enzymatic potency co-varies with the VDW volume or the maximum projection area of the groups used as replacements of the phenylacetyl moiety and used literature X-ray data to provide an explanation for this finding.
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Affiliation(s)
- Lee McDermott
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15260, USA; University of Pittsburgh, Drug Discovery Institute, Pittsburgh, PA 15269, USA.
| | - David Koes
- University of Pittsburgh, Department of Computational and Systems Biology, Pittsburgh, PA 15260, USA
| | - Shabber Mohammed
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15260, USA
| | - Prema Iyer
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15260, USA
| | - Melissa Boby
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15260, USA
| | - Venkatakrishnan Balasubramanian
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15260, USA; SASTRA Deemed University, Department of Chemical Engineering, Tamil Nadu, Tirumalaisamudram, 613401, India
| | - Mackenzie Geedy
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15260, USA
| | - William Katt
- Cornell University, Department of Molecular Medicine, Ithaca, NY 14853, USA
| | - Richard Cerione
- Cornell University, Department of Molecular Medicine, Ithaca, NY 14853, USA; Cornell University, Cornell High Energy Synchrotron Source (CHESS), Ithaca, NY 14853, USA; Cornell University, Department of Chemistry and Chemical Biology, Ithaca, NY 14853, USA
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16
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Chen X, Gao D, Sun Q, Chen Y, Liu H, Jiang Y. Metabolic Profiling of Amino Acids by Liquid Chromatography–Tandem Mass Spectrometry (LC–MS) to Characterize the Significance of Glutamine in Triple-Negative Breast Cancer (TNBC). ANAL LETT 2019. [DOI: 10.1080/00032719.2018.1513021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Xiaowu Chen
- Shenyang Pharmaceutical University, Shenyang, China
- Analytical and Testing Center, Shenzhen Kivita Innovative Drug Discovery Institute, Shenzhen, China
- Key Laboratory of Metabolomics at Shenzhen, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
| | - Dan Gao
- Analytical and Testing Center, Shenzhen Kivita Innovative Drug Discovery Institute, Shenzhen, China
- State Key Laboratory Breeding Base-Shenzhen Key Laboratory of Chemical Biology, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
| | - Qinsheng Sun
- State Key Laboratory Breeding Base-Shenzhen Key Laboratory of Chemical Biology, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
| | - Yuzong Chen
- Analytical and Testing Center, Shenzhen Kivita Innovative Drug Discovery Institute, Shenzhen, China
- State Key Laboratory Breeding Base-Shenzhen Key Laboratory of Chemical Biology, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
| | - Hongxia Liu
- Analytical and Testing Center, Shenzhen Kivita Innovative Drug Discovery Institute, Shenzhen, China
- Key Laboratory of Metabolomics at Shenzhen, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
| | - Yuyang Jiang
- Shenyang Pharmaceutical University, Shenyang, China
- State Key Laboratory Breeding Base-Shenzhen Key Laboratory of Chemical Biology, Graduate School at Shenzhen, Tsinghua University, Shenzhen, China
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Transfection with GLS2 Glutaminase (GAB) Sensitizes Human Glioblastoma Cell Lines to Oxidative Stress by a Common Mechanism Involving Suppression of the PI3K/AKT Pathway. Cancers (Basel) 2019; 11:cancers11010115. [PMID: 30669455 PMCID: PMC6356507 DOI: 10.3390/cancers11010115] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/16/2019] [Accepted: 01/17/2019] [Indexed: 01/23/2023] Open
Abstract
GLS-encoded glutaminase promotes tumorigenesis, while GLS2-encoded glutaminase displays tumor-suppressive properties. In glioblastoma (GBM), the most aggressive brain tumor, GLS is highly expressed and in most cases GLS2 is silenced. Previously, it was shown that transfection with a sequence encoding GAB, the main GLS2 isoform, decreased the survival, growth, and ability to migrate of human GBM cells T98G and increased their sensitivity towards an alkylating agent temozolomide (TMZ) and oxidative stress compared to the controls, by a not well-defined mechanism. In this study we report that GAB transfection inhibits growth and increases susceptibility towards TMZ and H2O2-mediated oxidative stress of two other GBM cell lines, U87MG and LN229. We also show that in GAB-transfected cells treated with H2O2, the PI3K/AKT pathway is less induced compared to the pcDNA-transfected counterparts and that pretreatment with PDGF-BB, an activator of AKT, protects GAB-transfected cells from death caused by the H2O2 treatment. In conclusion, our results show that (i) GAB suppresses the malignant phenotype of the GBM cells of different tumorigenic potentials and genetic backgrounds and (ii) the GAB-mediated increase of sensitivity to oxidative stress is causally related to the inhibition of the PI3K/AKT pathway. The upregulation of the GLS2 expression and the inhibition of the PI3K/AKT pathway may become a novel combined therapeutic strategy for anti-glioma preclinical investigations.
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Saladini S, Aventaggiato M, Barreca F, Morgante E, Sansone L, Russo MA, Tafani M. Metformin Impairs Glutamine Metabolism and Autophagy in Tumour Cells. Cells 2019; 8:cells8010049. [PMID: 30646605 PMCID: PMC6356289 DOI: 10.3390/cells8010049] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 01/07/2019] [Accepted: 01/09/2019] [Indexed: 12/21/2022] Open
Abstract
Metformin has been shown to inhibit glutaminase (GLS) activity and ammonia accumulation thereby reducing the risk of hepatic encephalopathy in type 2 diabetic patients. Since tumour cells are addicted to glutamine and often show an overexpression of glutaminase, we hypothesize that the antitumoral mechanism of metformin could be ascribed to inhibition of GLS and reduction of ammonia and ammonia-induced autophagy. Our results show that, in different tumour cell lines, micromolar doses of metformin prevent cell growth by reducing glutamate, ammonia accumulation, autophagy markers such as MAP1LC3B-II and GABARAP as well as degradation of long-lived proteins. Reduced autophagy is then accompanied by increased BECN1/BCL2 binding and apoptotic cell death. Interestingly, GLS-silenced cells reproduce the effect of metformin treatment showing reduced MAP1LC3B-II and GABARAP as well as ammonia accumulation. Since metformin is used as adjuvant drug to increase the efficacy of cisplatin-based neoadjuvant chemotherapy, we co-treated tumour cells with micromolar doses of metformin in the presence of cisplatin observing a marked reduction of MAP1LC3B-II and an increase of caspase 3 cleavage. In conclusion, our work demonstrates that the anti-tumoral action of metformin is due to the inhibition of glutaminase and autophagy and could be used to improve the efficacy of chemotherapy.
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Affiliation(s)
- Serena Saladini
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy.
| | - Michele Aventaggiato
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy.
| | - Federica Barreca
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy.
| | - Emanuela Morgante
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy.
| | - Luigi Sansone
- Department of Cellular and Molecular Pathology, IRCCS San Raffaele, 00166 Rome, Italy.
| | - Matteo A Russo
- Department of Cellular and Molecular Pathology, IRCCS San Raffaele, 00166 Rome, Italy.
- MEBIC Consortium, San Raffaele Rome Open University, 00166 Rome, Italy.
| | - Marco Tafani
- Department of Experimental Medicine, Sapienza University of Rome, 00161 Rome, Italy.
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Peyton KJ, Liu XM, Yu Y, Yates B, Behnammanesh G, Durante W. Glutaminase-1 stimulates the proliferation, migration, and survival of human endothelial cells. Biochem Pharmacol 2018; 156:204-214. [PMID: 30144404 PMCID: PMC6248344 DOI: 10.1016/j.bcp.2018.08.032] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 08/20/2018] [Indexed: 12/15/2022]
Abstract
Glutaminase-1 (GLS1) is a mitochondrial enzyme found in endothelial cells (ECs) that metabolizes glutamine to glutamate and ammonia. Although glutaminolysis modulates the function of human umbilical vein ECs, it is not known whether these findings extend to human ECs beyond the fetal circulation. Furthermore, the molecular mechanism by which GLS1 regulates EC function is not defined. In this study, we show that the absence of glutamine in the culture media or the inhibition of GLS1 activity or expression blocked the proliferation and migration of ECs derived from the human umbilical vein, the human aorta, and the human microvasculature. GLS1 inhibition arrested ECs in the G0/G1 phase of the cell cycle and this was associated with a significant decline in cyclin A expression. Restoration of cyclin A expression via adenoviral-mediated gene transfer improved the proliferative, but not the migratory, response of GLS1-inhibited ECs. Glutamine deprivation or GLS1 inhibition also stimulated the production of reactive oxygen species and this was associated with a marked decline in heme oxygenase-1 (HO-1) expression. GLS1 inhibition also sensitized ECs to the cytotoxic effect of hydrogen peroxide and this was prevented by the overexpression of HO-1. In conclusion, the metabolism of glutamine by GLS1 promotes human EC proliferation, migration, and survival irrespective of the vascular source. While cyclin A contributes to the proliferative action of GLS1, HO-1 mediates its pro-survival effect. These results identify GLS1 as a promising therapeutic target in treating diseases associated with aberrant EC proliferation, migration, and viability.
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Affiliation(s)
- Kelly J Peyton
- Department of Medical Pharmacology and Physiology, School of Medicine, University of Missouri, Columbia, MO, United States
| | - Xiao-Ming Liu
- Department of Medical Pharmacology and Physiology, School of Medicine, University of Missouri, Columbia, MO, United States
| | - Yajie Yu
- Department of Medical Pharmacology and Physiology, School of Medicine, University of Missouri, Columbia, MO, United States
| | - Benjamin Yates
- Department of Medical Pharmacology and Physiology, School of Medicine, University of Missouri, Columbia, MO, United States
| | - Ghazaleh Behnammanesh
- Department of Medical Pharmacology and Physiology, School of Medicine, University of Missouri, Columbia, MO, United States
| | - William Durante
- Department of Medical Pharmacology and Physiology, School of Medicine, University of Missouri, Columbia, MO, United States.
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Zhang K, Wu L, Zhang P, Luo M, Du J, Gao T, O'Connell D, Wang G, Wang H, Yang Y. miR-9 regulates ferroptosis by targeting glutamic-oxaloacetic transaminase GOT1 in melanoma. Mol Carcinog 2018; 57:1566-1576. [PMID: 30035324 DOI: 10.1002/mc.22878] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 07/01/2018] [Accepted: 07/19/2018] [Indexed: 12/26/2022]
Abstract
Ferroptosis is a recently recognized form of regulated cell death driven by lipid-based reactive oxygen species (ROS) accumulation. However, the molecular mechanisms of ferroptosis regulation are still largely unknown. Here we identified a novel miRNA, miR-9, as an important regulator of ferroptosis by directly targeting GOT1 in melanoma cells. Overexpression of miR-9 suppressed GOT1 by directly binding to its 3'-UTR, which subsequently reduced erastin- and RSL3-induced ferroptosis. Conversely, suppression of miR-9 increased the sensitivity of melanoma cells to erastin and RSL3. Importantly, anti-miR-9 mediated lipid ROS accumulation and ferroptotic cell death could be abrogated by inhibiting glutaminolysis process. Taken together, our findings demonstrate that miR-9 regulates ferroptosis by targeting GOT1 in melanoma cells, illustrating the important role of miRNA in ferroptosis.
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Affiliation(s)
- Kexin Zhang
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Longfei Wu
- Center for Genetic Epidemiology and Genomics, School of Public Health, Soochow University, Suzhou, Jiangsu, China
| | - Peng Zhang
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Meiying Luo
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Jing Du
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Tongtong Gao
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Douglas O'Connell
- Department of Medicine, UC Irvine School of Medicine, Orange, California
| | - Gaoyang Wang
- School of Life Science, Beijing Institute of Technology, Beijing, China
| | - Hong Wang
- State Key Laboratory of Pathogens and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing, China
| | - Yongfei Yang
- School of Life Science, Beijing Institute of Technology, Beijing, China
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21
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Yan L, Chen Z, Wu L, Su Y, Wang X, Tang N. Inhibitory effect of PXR on ammonia-induced hepatocyte autophagy via P53. Toxicol Lett 2018; 295:153-161. [PMID: 29908302 DOI: 10.1016/j.toxlet.2018.06.1066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 05/30/2018] [Accepted: 06/12/2018] [Indexed: 12/12/2022]
Abstract
Pregnane X Receptor (PXR), a nuclear receptor transcription factor, participates in a wide range of physiological activities, but the regulation of ammonia-induced hepatocyte autophagy by PXR is not yet clear. In this study, the levels of down-regulated LC3B-II and up-regulated SQSTM1 were found in ammonia-induced PXR-overexpressing (PXR+) liver cells, but the opposite appeared in PXR-knockdown (PXR-) liver cells. Rifampicin, a PXR-activating agent, elicits a similar effect as PXR+ cells. The mechanism analysis reveals that the levels of the energy-sensitive molecule AMPKβ1 and phosphorylated AMPKβ1 (p-AMPKβ1) in PXR- cells are higher than those in control cells, whereas the levels of this molecule in PXR+ cells are lower than those in control cells. Two active sites that bind to P53 exist in -253 to -19 at the promoter region of AMPKβ1, and their mutation can reduce the transactivating effect of AMPKβ1 that P53 relies on. A protein interaction also exists between PXR and P53. These findings indicate that PXR is a factor interfering the formation of ammonia-induced hepatocyte autophagy, and its inhibitory effect is achieved when P53 downregulates the expression and activity of AMPKβ1. This conclusion provides an appropriate clinical explanation for hepatotoxicity caused by the inhibitory effect of PXR-activating agent on hepatocyte autophagy.
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Affiliation(s)
- Linlin Yan
- Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Zhanfei Chen
- Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Luxi Wu
- Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Yongfa Su
- Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Xiaoqian Wang
- Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China
| | - Nanhong Tang
- Fujian Institute of Hepatobiliary Surgery, Fujian Medical University Union Hospital, Fuzhou, China; Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Research Center for Molecular Medicine, Fujian Medical University, Fuzhou, China.
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22
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Masamha CP, LaFontaine P. Molecular targeting of glutaminase sensitizes ovarian cancer cells to chemotherapy. J Cell Biochem 2018; 119:6136-6145. [DOI: 10.1002/jcb.26814] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 02/23/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Chioniso P. Masamha
- Department of Pharmaceutical SciencesCollege of Pharmacy and Health SciencesButler UniversityIndianapolisIndiana
| | - Patrick LaFontaine
- Department of Pharmaceutical SciencesCollege of Pharmacy and Health SciencesButler UniversityIndianapolisIndiana
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Fazzari J, Linher-Melville K, Singh G. Tumour-Derived Glutamate: Linking Aberrant Cancer Cell Metabolism to Peripheral Sensory Pain Pathways. Curr Neuropharmacol 2018; 15:620-636. [PMID: 27157265 PMCID: PMC5543678 DOI: 10.2174/1570159x14666160509123042] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/16/2016] [Accepted: 04/17/2016] [Indexed: 01/22/2023] Open
Abstract
Background Chronic pain is a major symptom that develops in cancer patients, most commonly emerging during advanced stages of the disease. The nature of cancer-induced pain is complex, and the efficacy of current therapeutic interventions is restricted by the dose-limiting side-effects that accompany common centrally targeted analgesics. Methods This review focuses on how up-regulated glutamate production and export by the tumour converge at peripheral afferent nerve terminals to transmit nociceptive signals through the transient receptor cation channel, TRPV1, thereby initiating central sensitization in response to peripheral disease-mediated stimuli. Results Cancer cells undergo numerous metabolic changes that include increased glutamine catabolism and over-expression of enzymes involved in glutaminolysis, including glutaminase. This mitochondrial enzyme mediates glutaminolysis, producing large pools of intracellular glutamate. Up-regulation of the plasma membrane cystine/glutamate antiporter, system xc-, promotes aberrant glutamate release from cancer cells. Increased levels of extracellular glutamate have been associated with the progression of cancer-induced pain and we discuss how this can be mediated by activation of TRPV1. Conclusion With a growing population of patients receiving inadequate treatment for intractable pain, new targets need to be considered to better address this largely unmet clinical need for improving their quality of life. A better understanding of the mechanisms that underlie the unique qualities of cancer pain will help to identify novel targets that are able to limit the initiation of pain from a peripheral source–the tumour.
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Affiliation(s)
| | | | - Gurmit Singh
- Department of Pathology and Molecular Medicine; Michael G. DeGroote Institute for Pain Research and Care, McMaster University, Hamilton, ON. Canada
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Selenite inhibits glutamine metabolism and induces apoptosis by regulating GLS1 protein degradation via APC/C-CDH1 pathway in colorectal cancer cells. Oncotarget 2017; 8:18832-18847. [PMID: 27902968 PMCID: PMC5386651 DOI: 10.18632/oncotarget.13600] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Accepted: 10/21/2016] [Indexed: 12/22/2022] Open
Abstract
Glutaminolysis is important for metabolism and biosynthesis of cancer cells, and GLS is essential in the process. Selenite is widely regarded as a chemopreventive agent against cancer risk. Emerging evidence suggests that it also has chemotherapeutic potential in various cancer types, but the mechanism remains elusive. We demonstrate for the first time that supranutritional dose of selenite suppresses glutaminolysis by promoting GLS1 protein degradation and apoptosis. Mechanistically, selenite promotes association of APC/C-CDH1 with GLS1 and leads to GLS1 degradation by ubiquitination, this process is related to induction of PTEN expression. In addition, GLS1 expression is increased in human colorectal cancer tissues compared with normal mucosae. Our data provide a novel mechanistic explanation for the anti-cancer effect of selenite from a perspective of cell metabolism. Moreover, our results indicate that glutaminolysis especially GLS1 could be an attractive therapeutic target in colorectal cancer.
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Jeitner TM, Kristoferson E, Azcona JA, Pinto JT, Stalnecker C, Erickson JW, Kung HF, Li J, Ploessl K, Cooper AJL. Fluorination at the 4 position alters the substrate behavior of L-glutamine and L-glutamate: Implications for positron emission tomography of neoplasias. J Fluor Chem 2017; 192:58-67. [PMID: 28546645 DOI: 10.1016/j.jfluchem.2016.10.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Two 4-fluoro-L-glutamine diastereoisomers [(2S,4R)-4-FGln, (2S,4S)-4-FGln] were previously developed for positron emission tomography. Label uptake into two tumor cell types was greater with [18F](2S,4R)-4-FGln than with [18F](2S,4S)-4-FGln. In the present work we investigated the enzymology of two diastereoisomers of 4-FGln, two diastereoisomers of 4-fluoroglutamate (4-FGlu) (potential metabolites of the 4-FGln diastereoisomers) and another fluoro-derivative of L-glutamine [(2S,4S)-4-(3-fluoropropyl)glutamine (FP-Gln)]. The two 4-FGlu diastereoisomers were found to be moderate-to-good substrates relative to L-glutamate of glutamate dehydrogenase, aspartate aminotransferase and alanine aminotransferase. Additionally, alanine aminotransferase was shown to catalyze an unusual γ-elimination reaction with both 4-FGlu diastereoisomers. Both 4-FGlu diastereoisomers were shown to be poor substrates, but strong inhibitors of glutamine synthetase. Both 4-FGln diastereoisomers were shown to be poor substrates compared to L-glutamine of glutamine transaminase L and α-aminoadipate aminotransferase. However, (2S,4R)-4-FGln was found to be a poor substrate of glutamine transaminase K, whereas (2S,4S)-4-FGln was shown to be an excellent substrate. By contrast, FP-Gln was found to be a poor substrate of all enzymes examined. Evidently, substitution of H in position 4 by F in L-glutamine/L-glutamate has moderate-to-profound effects on enzyme-catalyzed reactions. The present results: 1) show that 4-FGln and 4-FGlu diastereoisomers may be useful for studying active site topology of glutamate- and glutamine-utilizing enzymes; 2) provide a framework for understanding possible metabolic transformations in tumors of 18F-labeled (2S,4R)-4-FGln, (2S,4S)-4-FGln, (2S,4R)-4-FGlu or (2S,4S)-4-FGlu; and 3) show that [18F]FP-Gln is likely to be much less metabolically active in vivo than are the [18F]4-FGln diastereoisomers.
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Affiliation(s)
- Thomas M Jeitner
- Department of Biochemistry and Molecular Biology, New York Medical College, Valhalla, NY 10595, USA
| | - Eva Kristoferson
- Department of Biochemistry and Molecular Biology, New York Medical College, Valhalla, NY 10595, USA
| | - Juan A Azcona
- Department of Biochemistry and Molecular Biology, New York Medical College, Valhalla, NY 10595, USA
| | - John T Pinto
- Department of Biochemistry and Molecular Biology, New York Medical College, Valhalla, NY 10595, USA
| | - Clint Stalnecker
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA
| | - Jon W Erickson
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY 14853, USA
| | - Hank F Kung
- Department of Radiology, School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Jianyong Li
- Department of Biochemistry, Virginia Tech, Blacksburg, VA 24061, USA
| | - Karl Ploessl
- Department of Radiology, School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Arthur J L Cooper
- Department of Biochemistry and Molecular Biology, New York Medical College, Valhalla, NY 10595, USA
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Grohmann U, Mondanelli G, Belladonna ML, Orabona C, Pallotta MT, Iacono A, Puccetti P, Volpi C. Amino-acid sensing and degrading pathways in immune regulation. Cytokine Growth Factor Rev 2017; 35:37-45. [PMID: 28545736 DOI: 10.1016/j.cytogfr.2017.05.004] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 05/15/2017] [Indexed: 02/07/2023]
Abstract
Indoleamine 2,3-dioxygenases (IDOs) - belonging in the heme dioxygenase family and degrading tryptophan - are responsible for the de novo synthesis of nicotinamide adenine dinucleotide (NAD+). As such, they are expressed by a variety of invertebrate and vertebrate species. In mammals, IDO1 has remarkably evolved to expand its functions, so to become a prominent homeostatic regulator, capable of modulating infection and immunity in multiple ways, including local tryptophan deprivation, production of biologically active tryptophan catabolites, and non-enzymatic cell-signaling activity. Much like IDO1, arginase 1 (Arg1) is an immunoregulatory enzyme that catalyzes the degradation of arginine. Here, we discuss the possible role of amino-acid degradation as related to the evolution of the immune systems and how the functions of those enzymes are linked by an entwined pathway selected by phylogenesis to meet the newly arising needs imposed by an evolving environment.
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Affiliation(s)
- Ursula Grohmann
- Department of Experimental Medicine, University of Perugia, 06132 Perugia, Italy.
| | - Giada Mondanelli
- Department of Experimental Medicine, University of Perugia, 06132 Perugia, Italy
| | - Maria L Belladonna
- Department of Experimental Medicine, University of Perugia, 06132 Perugia, Italy
| | - Ciriana Orabona
- Department of Experimental Medicine, University of Perugia, 06132 Perugia, Italy
| | - Maria T Pallotta
- Department of Experimental Medicine, University of Perugia, 06132 Perugia, Italy
| | - Alberta Iacono
- Department of Experimental Medicine, University of Perugia, 06132 Perugia, Italy
| | - Paolo Puccetti
- Department of Experimental Medicine, University of Perugia, 06132 Perugia, Italy
| | - Claudia Volpi
- Department of Experimental Medicine, University of Perugia, 06132 Perugia, Italy
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Possible anticancer agents: synthesis, pharmacological activity, and molecular modeling studies on some 5-N
-Substituted-2-N-(substituted benzenesulphonyl)-L(+)Glutamines. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1858-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Cheng L, Wu CR, Zhu LH, Li H, Chen LX. Physapubescin, a natural withanolide as a kidney-type glutaminase (KGA) inhibitor. Bioorg Med Chem Lett 2017; 27:1243-1246. [DOI: 10.1016/j.bmcl.2017.01.057] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2016] [Revised: 01/06/2017] [Accepted: 01/18/2017] [Indexed: 01/15/2023]
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Hou KL, Lin SK, Kok SH, Wang HW, Lai EHH, Hong CY, Yang H, Wang JS, Lin LD, Chang JZC. Increased Expression of Glutaminase in Osteoblasts Promotes Macrophage Recruitment in Periapical Lesions. J Endod 2017; 43:602-608. [PMID: 28190586 DOI: 10.1016/j.joen.2016.11.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 10/17/2016] [Accepted: 11/02/2016] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Recently, we have shown that tissue hypoxia stimulates the progression of periapical lesions by up-regulating glycolysis-dependent apoptosis of osteoblasts. Other facets of hypoxia-induced metabolic reprogramming in disease pathogenesis require further investigation. In this study, we examined the connection between hypoxia-augmented glutamine catabolism in osteoblasts and the development of periapical lesions. METHODS Primary human osteoblasts were cultured under hypoxia. The expression of glutaminase 1 (GLS1) was examined using Western blot analysis. The production of glutamate was measured by colorimetric assay. Knockdown of GLS1 was performed with small interfering RNA technology. C-C motif chemokine ligand 2 (CCL2) secretion and chemotaxis of J774 macrophages were examined by enzyme-linked immunosorbent assay and transwell migration assay, respectively. In a rat model of induced periapical lesions, the relations between disease progression and osteoblastic expression of GLS1 or macrophage recruitment were studied. RESULTS Hypoxia enhanced GLS1 expression and subsequent glutamate production in osteoblasts. Glutamate induced chemoattraction of macrophages by osteoblasts through up-regulation of CCL2 synthesis. Hypoxia promoted CCL2 secretion and macrophage recruitment through augmentation of glutaminolysis. Knockdown of GLS1 abolished hypoxia-induced effects. In rat periapical lesions, progressive bone resorption was significantly related to elevated GLS1 expression in osteoblasts and increased macrophage recruitment. CONCLUSIONS In addition to the rise in glycolytic activity, the progression of periapical lesions is also associated with enhanced glutamine catabolism in osteoblasts. GLS1 may be a potential therapeutic target in the management of periapical lesions.
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Affiliation(s)
- Kuo-Liang Hou
- Graduate Institute of Clinical Dentistry, National Taiwan University, Taipei, Taiwan
| | - Sze-Kwan Lin
- Department of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Sang-Heng Kok
- Department of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Han-Wei Wang
- Department of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Eddie Hsiang-Hua Lai
- Department of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Chi-Yuan Hong
- Department of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan; College of Bio-Resources and Agriculture, School of Dentistry, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Hsiang Yang
- Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Juo-Song Wang
- Department of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Li-Deh Lin
- Department of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan
| | - Jenny Zwei-Chieng Chang
- Department of Dentistry, National Taiwan University, Taipei, Taiwan; Department of Dentistry, National Taiwan University Hospital, Taipei, Taiwan.
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Abstract
The remarkable metabolic differences between cancer cells and normal cells result in the potential for targeted cancer therapy. The upregulation of glutaminolysis provides energetic advantages to cancer cells. The recently described link between glutaminolysis and autophagy, mediated by MTORC1, may constitute an attractive target for therapeutic strategies. A combination of therapies targeting simultane-ously cell signaling, cancer metabolism, and autophagy can solve therapy resistance and tumor relapse problems, commonly observed in patients treated with most of the current targeted therapies. In this review we summarize the mechanistic link between glutaminolysis and autophagy, and discuss the impacts of these processes on cancer progression and the potential for therapeutic intervention.
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31
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McDermott LA, Iyer P, Vernetti L, Rimer S, Sun J, Boby M, Yang T, Fioravanti M, O'Neill J, Wang L, Drakes D, Katt W, Huang Q, Cerione R. Design and evaluation of novel glutaminase inhibitors. Bioorg Med Chem 2016; 24:1819-39. [PMID: 26988803 DOI: 10.1016/j.bmc.2016.03.009] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 02/24/2016] [Accepted: 03/03/2016] [Indexed: 01/09/2023]
Abstract
A novel set of GAC (kidney glutaminase isoform C) inhibitors able to inhibit the enzymatic activity of GAC and the growth of the triple negative MDA-MB-231 breast cancer cells with low nanomolar potency is described. Compounds in this series have a reduced number of rotatable bonds, improved ClogPs, microsomal stability and ligand efficiency when compared to the leading GAC inhibitors BPTES and CB-839. Property improvements were achieved by the replacement of the flexible n-diethylthio or the n-butyl moiety present in the leading inhibitors by heteroatom substituted heterocycloalkanes.
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Affiliation(s)
- Lee A McDermott
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15261, USA; University of Pittsburgh, Drug Discovery Institute, Pittsburgh, PA 15261, USA.
| | - Prema Iyer
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15261, USA; University of Pittsburgh, Drug Discovery Institute, Pittsburgh, PA 15261, USA
| | - Larry Vernetti
- University of Pittsburgh, Drug Discovery Institute, Pittsburgh, PA 15261, USA
| | - Shawn Rimer
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15261, USA
| | - Jingran Sun
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15261, USA
| | - Melissa Boby
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15261, USA
| | - Tianyi Yang
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15261, USA
| | - Michael Fioravanti
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15261, USA
| | - Jason O'Neill
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15261, USA
| | - Liwei Wang
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15261, USA
| | - Dylan Drakes
- University of Pittsburgh, Department of Pharmaceutical Sciences, Pittsburgh, PA 15261, USA
| | - William Katt
- Cornell University, Department of Molecular Medicine, Ithaca, NY 14853, USA
| | - Qingqiu Huang
- Cornell University, Laboratory for Accelerator-based Sciences and Education, Ithaca, NY 14853, USA
| | - Richard Cerione
- Cornell University, Department of Molecular Medicine, Ithaca, NY 14853, USA; Cornell University, Department of Chemistry and Chemical Biology, Ithaca, NY 14853, USA
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Akanuma SI, Zakoji N, Kubo Y, Hosoya KI. In Vitro Study of L-Glutamate and L-Glutamine Transport in Retinal Pericytes: Involvement of Excitatory Amino Acid Transporter 1 and Alanine-Serine-Cysteine Transporter 2. Biol Pharm Bull 2016; 38:901-8. [PMID: 26027831 DOI: 10.1248/bpb.b15-00133] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
L-Glutamate (L-Glu) is known to be a relaxant of pericytes and to induce changes in microcirculatory hemodynamics. Since the concentration of L-Glu which induces the dilation of retinal capillaries is reported to be high compared with the estimated concentration in the retinal interstitial fluid, it is hypothesized that some systems involving concentrative L-Glu release are present in retinal pericytes. The purpose of this study was to investigate the existence of L-Glu-storing systems, which contribute to autocrine L-Glu release, in retinal pericytes using conditionally immortalized rat retinal pericytes (TR-rPCT1 cells), which express mRNAs of L-Glu-synthesizing enzymes from L-glutamine (L-Gln). TR-rPCT1 cells express the mRNAs of vesicular L-Glu transporter 1 (VGLUT1), indicating that L-Glu in the cytoplasm is taken up into VGLUT1-expressing vesicles of retinal pericytes. L-Glu and L-Gln are taken up into TR-rPCT1 cells via Na(+)-dependent saturable process(es) with a Km value of 22.4 µM and 163 µM, respectively. The [(3)H]L-Glu uptake was inhibited by ca. 50% in the presence of D-aspartate, a substrate of excitatory amino acid transporter (EAAT) subtypes, whereas substrates of alanine-serine-cysteine transporter (ASCT) subtypes exhibited only a weak inhibitory effect on [(3)H]L-Glu uptake compared with D-aspartate. Regarding the L-Gln uptake by TR-rPCT1 cells, the inhibitory effect of ASCT substrates on the [(3)H]L-Gln uptake was stronger than that of substrates of other neutral amino acid transport systems. Consequently, it was determined that EAAT1 and ASCT2 play a role in the transport of L-Glu and L-Gln, respectively, from retinal interstitial fluid to the cytoplasm of retinal pericytes.
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Affiliation(s)
- Shin-Ichi Akanuma
- Department of Pharmaceutics, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
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33
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Polletta L, Vernucci E, Carnevale I, Arcangeli T, Rotili D, Palmerio S, Steegborn C, Nowak T, Schutkowski M, Pellegrini L, Sansone L, Villanova L, Runci A, Pucci B, Morgante E, Fini M, Mai A, Russo MA, Tafani M. SIRT5 regulation of ammonia-induced autophagy and mitophagy. Autophagy 2016; 11:253-70. [PMID: 25700560 PMCID: PMC4502726 DOI: 10.1080/15548627.2015.1009778] [Citation(s) in RCA: 211] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In liver the mitochondrial sirtuin, SIRT5, controls ammonia detoxification by regulating CPS1, the first enzyme of the urea cycle. However, while SIRT5 is ubiquitously expressed, urea cycle and CPS1 are only present in the liver and, to a minor extent, in the kidney. To address the possibility that SIRT5 is involved in ammonia production also in nonliver cells, clones of human breast cancer cell lines MDA-MB-231 and mouse myoblast C2C12, overexpressing or silenced for SIRT5 were produced. Our results show that ammonia production increased in SIRT5-silenced and decreased in SIRT5-overexpressing cells. We also obtained the same ammonia increase when using a new specific inhibitor of SIRT5 called MC3482. SIRT5 regulates ammonia production by controlling glutamine metabolism. In fact, in the mitochondria, glutamine is transformed in glutamate by the enzyme glutaminase, a reaction producing ammonia. We found that SIRT5 and glutaminase coimmunoprecipitated and that SIRT5 inhibition resulted in an increased succinylation of glutaminase. We next determined that autophagy and mitophagy were increased by ammonia by measuring autophagic proteolysis of long-lived proteins, increase of autophagy markers MAP1LC3B, GABARAP, and GABARAPL2, mitophagy markers BNIP3 and the PINK1-PARK2 system as well as mitochondrial morphology and dynamics. We observed that autophagy and mitophagy increased in SIRT5-silenced cells and in WT cells treated with MC3482 and decreased in SIRT5-overexpressing cells. Moreover, glutaminase inhibition or glutamine withdrawal completely prevented autophagy. In conclusion we propose that the role of SIRT5 in nonliver cells is to regulate ammonia production and ammonia-induced autophagy by regulating glutamine metabolism.
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Key Words
- ACTB, actin, β
- ATG, autophagy-related
- BNIP3, BCL2/adenovirus E1B 19kDa interacting protein 3
- BPTES, bis-2-(5-phenylacetamido-1, 3, 4-thiadiazol-2-yl)ethyl sulfide
- COX4I1, cytochrome c oxidase subunit IV isoform 1
- CPS1, carbamoyl-phosphate synthase 1, mitochondrial
- GABARAP, GABA(A) receptor-associated protein
- GABARAPL2, GABA(A) receptor-associated protein-like 2
- GLS, glutaminase
- GLUD1, glutamate dehydrogenase 1
- GLUL, glutamate-ammonia ligase
- MAP1LC3B, microtubule-associated protein 1 light chain 3 β
- MFN2, mitofusin 2
- OPA1, optic atrophy 1 (autosomal dominant)
- PARK2, parkin RBR E3 ubiquitin protein ligase
- PEG, polyethylene glycol
- PINK1, PTEN induced putative kinase 1
- SIRT5, sirtuin 5
- SQSTM1, sequestosome 1
- TCA, tricarboxylic acid cycle
- TEM, transmission electron microscopy
- ammonia
- autophagy
- glutaminase
- glutamine
- hexachlorophene, 2, 2′-methylenebis(3, 4, 6-trichlorophenol)
- mitochondrial dynamics
- mitophagy
- molecular rehabilitation
- sirtuin 5
- succinylation
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Affiliation(s)
- Lucia Polletta
- a Department of Experimental Medicine ; University of Rome ; Sapienza ; Rome , Italy
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Abstract
By histological, morphological criteria, and malignancy, brain tumors are classified by WHO into grades I (most benign) to IV (highly malignant), and gliomas are the most frequently occurring class throughout the grades. Similar to peripheral tumors, the growth of glia-derived tumor cells largely depends on glutamine (Gln), which is vividly taken up by the cells, using mostly ASCT2 and SN1 as Gln carriers. Tumor growth-promoting effects of Gln are associated with its phosphate-activated glutaminase (GA) (specifically KGA)-mediated degradation to glutamate (Glu) and/or with its entry to the energy- and intermediate metabolite-generating pathways related to the tricarboxylic acid cycle. However, a subclass of liver-type GA are absent in glioma cells, a circumstance which allows phenotype manipulations upon their transfection to the cells. Gln-derived Glu plays a major role in promoting tumor proliferation and invasion. Glu is relatively inefficiently recycled to Gln and readily leaves the cells by exchange with the extracellular pool of the glutathione (GSH) precursor Cys mediated by xc- transporter. This results in (a) cell invasion-fostering interaction of Glu with ionotropic Glu receptors in the surrounding tissue, (b) intracellular accumulation of GSH which increases tumor resistance to radio- and chemotherapy.
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Affiliation(s)
- Monika Szeliga
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Pawińskiego St. 5, 02-106, Warsaw, Poland.
| | - Jan Albrecht
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Pawińskiego St. 5, 02-106, Warsaw, Poland
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Zheng B, Chai R, Yu X. Downregulation of NIT2 inhibits colon cancer cell proliferation and induces cell cycle arrest through the caspase-3 and PARP pathways. Int J Mol Med 2015; 35:1317-22. [PMID: 25738796 DOI: 10.3892/ijmm.2015.2125] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Accepted: 12/30/2014] [Indexed: 11/05/2022] Open
Abstract
Colorectal cancer, also known as colon cancer is the most devastating malignancy worldwide. Previous studies have reported that Nit2, a member of the nitrilase superfamily, is a potential tumor suppressor, although its function remains elusive in colon cancer. In the present study, we employed an RNA interference lentivirus system to silence endogenous NIT2 expression in the colon cancer cell line, HCT116. The knockdown efficiency was determined by RT-qPCR and western blot analysis. The depletion of NIT2 markedly inhibited colon cancer cell proliferation and colony formation and induced cell cycle arrest in the G0/G1 phase, as shown by MTT assay, colony formation assay and flow cytometric analysis, respectively. Further investigation with an intracellular signaling array demonstrated that the depletion of NIT2 triggered the apoptosis of colon cancer cells through the caspase-3 and poly(ADP-ribose) polymerase (PARP) pathways. Our findings suggest that NIT2 may be an oncogene in human colon cancer and may thus serve as a promising therapeutic target for the treatment of colon cancer.
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Affiliation(s)
- Bo'an Zheng
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Rui Chai
- Department of Colorectal Surgery, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
| | - Xiaojun Yu
- Department of Gastroenterological Surgery, Zhejiang Provincial People's Hospital, Hangzhou, Zhejiang 310014, P.R. China
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Szeliga M, Albrecht J. Opposing roles of glutaminase isoforms in determining glioblastoma cell phenotype. Neurochem Int 2014; 88:6-9. [PMID: 25529918 DOI: 10.1016/j.neuint.2014.11.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Revised: 10/28/2014] [Accepted: 11/04/2014] [Indexed: 01/04/2023]
Abstract
Glutamine (Gln) and glutamate (Glu) play pivotal roles in the malignant phenotype of brain tumors via multiple mechanisms. Glutaminase (GA, EC 3.5.1.2) metabolizes Gln to Glu and ammonia. Human GA isoforms are encoded by two genes: GLS gene codes for kidney-type isoforms, KGA and GAC, whereas GLS2 codes for liver-type isoforms, GAB and LGA. The expression pattern of both genes in different neoplastic cell lines and tissues implicated that the kidney-type isoforms are associated with cell proliferation, while the liver-type isoforms dominate in, and contribute to the phenotype of quiescent cells. GLS gene has been demonstrated to be regulated by oncogene c-Myc, whereas GLS2 gene was identified as a target gene of p53 tumor suppressor. In glioblastomas (GBM, WHO grade IV), the most aggressive brain tumors, high levels of GLS and only traces or lack of GLS2 transcripts were found. Ectopic overexpression of GLS2 in human glioblastoma T98G cells decreased their proliferation and migration and sensitized them to the alkylating agents often used in the chemotherapy of gliomas. GLS silencing reduced proliferation of glioblastoma T98G cells and strengthen the antiproliferative effect evoked by previous GLS2 overexpression.
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Affiliation(s)
- Monika Szeliga
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland.
| | - Jan Albrecht
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland
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Al Hasawi N, Alkandari MF, Luqmani YA. Phosphofructokinase: a mediator of glycolytic flux in cancer progression. Crit Rev Oncol Hematol 2014; 92:312-21. [PMID: 24910089 DOI: 10.1016/j.critrevonc.2014.05.007] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 04/10/2014] [Accepted: 05/13/2014] [Indexed: 01/07/2023] Open
Abstract
In view of the current limitations of cancer chemotherapy, there has been resurgent interest in re-visiting glycolysis to determine whether tumors could be killed by energy deprivation rather than solely by strategies to inhibit proliferation. Cancer cells exhibit a uniquely high rate of glucose utilization, converting it into lactate whose export subsequently creates an acidic extracellular environment that is thought to promote invasion and metastasis, in preference to its complete oxidation even in the presence of adequate oxygen supply. Reductive analysis of each step of glycolysis shows that, of the three rate limiting enzymes of the pathway, isoforms of phosphofructokinase may afford the greatest opportunity as targets to deprive cancer cells from essential energy and substrates for macromolecular synthesis for proliferation while allowing normal cells to survive. Strategies discussed include restricting the substrate for this enzyme. While prospects for monotherapy with glycolytic inhibitors are poor, combination therapy may be productive.
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Affiliation(s)
- Nada Al Hasawi
- Faculty of Pharmacy, Kuwait University, PO Box 24923, Safat 13110, Kuwait.
| | - Mariam F Alkandari
- Faculty of Pharmacy, Kuwait University, PO Box 24923, Safat 13110, Kuwait.
| | - Yunus A Luqmani
- Faculty of Pharmacy, Kuwait University, PO Box 24923, Safat 13110, Kuwait.
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38
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Meng G, Xia M, Xu C, Yuan D, Schnurr M, Wei J. Multifunctional antitumor molecule 5'-triphosphate siRNA combining glutaminase silencing and RIG-I activation. Int J Cancer 2014; 134:1958-71. [PMID: 23921958 DOI: 10.1002/ijc.28416] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 07/18/2013] [Accepted: 07/22/2013] [Indexed: 12/25/2022]
Abstract
Resisting cell death, reprogrammed metabolism and immune escape are fundamental traits of hard-to-treat cancers. Therapeutic improvement can be expected by designing drugs targeting all three aspects. 5'-Triphosphate RNA (ppp-RNA), a specific ligand of the pattern recognition receptor retinoic acid-inducible gene I (RIG-I), has been shown to trigger intrinsic apoptosis of malignant cells and to activate antitumor immune responses via type I interferons (IFNs). In our study, we designed a ppp-modified siRNA specifically silencing glutaminase (ppp-GLS), a key enzyme of glutaminolysis that is indispensable for many cancer types. Bifunctional ppp-GLS induced more prominent antitumor responses than RNA molecules that contained either the RIG-I ligand motif or GLS silencing capability alone. The cytopathic effect was constrained to tumor cells as nonmalignant cells were not affected. We then analyzed the mechanisms leading to the profound antitumor efficacy. First, ppp-GLS effectively induced intrinsic proapoptotic signaling. In addition, GLS silencing sensitized malignant cells to RIG-I-induced apoptosis. Moreover, disturbed glutaminolysis by GLS silencing contributed to enhanced cytotoxicity. Finally, RIG-I activation blocked autophagic degradation leading to dysfunctional mitochondria and reactive oxygen species (ROS) generation, whereas GLS silencing severely impaired ROS scavenging systems, leading to a vicious circle of ROS-mediated cytotoxicity. Taken together, ppp-GLS combines cell death induction, immune activation and glutaminase inhibition in a single molecule and has high therapeutic efficacy against cancer cells.
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Affiliation(s)
- Gang Meng
- Jiangsu Key Laboratory of Molecular Medicine, Medical School of Nanjing University, Nanjing, China
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Abstract
The metabolic adaptations that support oncogenic growth can also render cancer cells dependent on certain nutrients. Along with the Warburg effect, increased utilization of glutamine is one of the metabolic hallmarks of the transformed state. Glutamine catabolism is positively regulated by multiple oncogenic signals, including those transmitted by the Rho family of GTPases and by c-Myc. The recent identification of mechanistically distinct inhibitors of glutaminase, which can selectively block cellular transformation, has revived interest in the possibility of targeting glutamine metabolism in cancer therapy. Here, we outline the regulation and roles of glutamine metabolism within cancer cells and discuss possible strategies for, and the consequences of, impacting these processes therapeutically.
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40
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Harder LM, Bunkenborg J, Andersen JS. Inducing autophagy: a comparative phosphoproteomic study of the cellular response to ammonia and rapamycin. Autophagy 2013; 10:339-55. [PMID: 24300666 PMCID: PMC5396081 DOI: 10.4161/auto.26863] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Autophagy is a lysosomal-mediated catabolic process, which through degradation of different cytoplasmic components aids in maintaining cellular homeostasis and survival during exposure to extra- or intracellular stresses. Ammonia is a potential toxic and stress-inducing byproduct of glutamine catabolism, which has recently been found to induce autophagy in an MTOR independent way and support cancer cell survival. In this study, quantitative phosphoproteomics was applied to investigate the initial signaling events linking ammonia to the induction of autophagy. The MTOR inhibitor rapamycin was used as a reference treatment to emphasize the differences between an MTOR-dependent and -independent autophagy-induction. By this means 5901 phosphosites were identified of which 626 were treatment-specific regulated and 175 were coregulated. Investigation of the ammonia-specific regulated sites supported that MTOR activity was not affected, but indicated increased MAPK3 activity, regulation of proteins involved in Rho signal transduction, and a novel phosphorylation motif, serine-proline-threonine (SPT), which could be linked to cytoskeleton-associated proteins. MAPK3 could not be identified as the primary driver of ammonia-induced autophagy but instead the data suggested an upregulation of AMPK and the unfolded protein response (UPR), which might link ammonia to autophagy induction. Support of UPR induction was further obtained from the finding of increased protein levels of the ER stress markers DDIT3/CHOP and HSPA5 during ammonia treatment. The large-scale data set presented here comprises extensive high-quality quantitative information on phosphoprotein regulation in response to 2 very different autophagy inducers and should therefore be considered a general resource for the community.
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Affiliation(s)
- Lea M Harder
- Department of Biochemistry and Molecular Biology; University of Southern Denmark; Odense, Denmark
| | - Jakob Bunkenborg
- Department of Biochemistry and Molecular Biology; University of Southern Denmark; Odense, Denmark
| | - Jens S Andersen
- Department of Biochemistry and Molecular Biology; University of Southern Denmark; Odense, Denmark
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Glutaminase regulation in cancer cells: a druggable chain of events. Drug Discov Today 2013; 19:450-7. [PMID: 24140288 DOI: 10.1016/j.drudis.2013.10.008] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Revised: 09/09/2013] [Accepted: 10/08/2013] [Indexed: 12/21/2022]
Abstract
Metabolism is the process by which cells convert relatively simple extracellular nutrients into energy and building blocks necessary for their growth and survival. In cancer cells, metabolism is dramatically altered compared with normal cells. These alterations are known as the Warburg effect. One consequence of these changes is cellular addiction to glutamine. Because of this, in recent years the enzyme glutaminase has become a key target for small molecule therapeutic intervention. Like many oncotargets, however, glutaminase has a number of upstream partners that might offer additional druggable targets. This review summarizes the work from the current decade surrounding glutaminase and its regulation, and suggests strategies for therapeutic intervention in relevant cases.
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42
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Han T, Kang D, Ji D, Wang X, Zhan W, Fu M, Xin HB, Wang JB. How does cancer cell metabolism affect tumor migration and invasion? Cell Adh Migr 2013; 7:395-403. [PMID: 24131935 DOI: 10.4161/cam.26345] [Citation(s) in RCA: 137] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Cancer metastasis is the major cause of cancer-associated death. Accordingly, identification of the regulatory mechanisms that control whether or not tumor cells become "directed walkers" is a crucial issue of cancer research. The deregulation of cell migration during cancer progression determines the capacity of tumor cells to escape from the primary tumors and invade adjacent tissues to finally form metastases. The ability to switch from a predominantly oxidative metabolism to glycolysis and the production of lactate even when oxygen is plentiful is a key characteristic of cancer cells. This metabolic switch, known as the Warburg effect, was first described in 1920s, and affected not only tumor cell growth but also tumor cell migration. In this review, we will focus on the recent studies on how cancer cell metabolism affects tumor cell migration and invasion. Understanding the new aspects on molecular mechanisms and signaling pathways controlling tumor cell migration is critical for development of therapeutic strategies for cancer patients.
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Affiliation(s)
- Tianyu Han
- The Institute of Translational Medicine; Nanchang University; Jiangxi, PR China
| | - De Kang
- The Institute of Translational Medicine; Nanchang University; Jiangxi, PR China
| | - Daokun Ji
- The Institute of Translational Medicine; Nanchang University; Jiangxi, PR China
| | - Xiaoyu Wang
- The Institute of Translational Medicine; Nanchang University; Jiangxi, PR China
| | - Weihua Zhan
- The Institute of Translational Medicine; Nanchang University; Jiangxi, PR China
| | - Minggui Fu
- The Institute of Translational Medicine; Nanchang University; Jiangxi, PR China
| | - Hong-Bo Xin
- The Institute of Translational Medicine; Nanchang University; Jiangxi, PR China
| | - Jian-Bin Wang
- The Institute of Translational Medicine; Nanchang University; Jiangxi, PR China
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Szeliga M, Bogacińska-Karaś M, Różycka A, Hilgier W, Marquez J, Albrecht J. Silencing of GLS and overexpression of GLS2 genes cooperate in decreasing the proliferation and viability of glioblastoma cells. Tumour Biol 2013; 35:1855-62. [PMID: 24096582 PMCID: PMC3967065 DOI: 10.1007/s13277-013-1247-4] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 09/23/2013] [Indexed: 12/25/2022] Open
Abstract
Glutamine (Gln) metabolism, initiated by its degradation by glutaminases (GA), is elevated in neoplastic cells and tissues. In malignant glia-derived tumors, GA isoforms, KGA and GAC, coded by the GLS gene, are overexpressed, whereas the GLS2-coded GAB and LGA isoforms, are hardly detectable in there. Our previous study revealed that transfection of T98G glioblastoma cells with GAB reduced cell proliferation and migration, by a yet unknown mechanism not related to Gln degradation. The question arose how simultaneous overexpression of GAB and inhibition of KGA would affect glioblastoma cell growth. Here, we used siRNA to silence the expression of Gls in T98G cells which were or were not stably transfected with GAB (TGAB cells). In both T98G and TGAB cell lines, silencing of Gls with siRNAs targeted at different sequences decreased cell viability and proliferation in a different, sequence-dependent degree, and the observed decreases were in either cell line highly correlated with increase of intracellular Gln (r > 0.9), a parameter manifesting decreased Gln degradation. The results show that combination of negative modulation of GA isoforms arising from GLS gene with the introduction of the GLS2 gene product, GAB, may in the future provide a useful means to curb glioblastoma growth in situ. At the same time, the results underscore the critical role of Gln degradation mediated by KGA in the manifestations of aggressive glial tumor phenotype.
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Affiliation(s)
- Monika Szeliga
- Department of Neurotoxicology, Mossakowski Medical Research Centre Polish Academy of Sciences, 5 Pawińskiego Str., 02-106, Warsaw, Poland,
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Thomas AG, Rojas C, Tanega C, Shen M, Simeonov A, Boxer MB, Auld DS, Ferraris DV, Tsukamoto T, Slusher BS. Kinetic characterization of ebselen, chelerythrine and apomorphine as glutaminase inhibitors. Biochem Biophys Res Commun 2013; 438:243-8. [PMID: 23850693 DOI: 10.1016/j.bbrc.2013.06.110] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 06/28/2013] [Indexed: 12/14/2022]
Abstract
Glutaminase catalyzes the hydrolysis of glutamine to glutamate and plays a central role in the proliferation of neoplastic cells via glutaminolysis, as well as in the generation of excitotoxic glutamate in central nervous system disorders such as HIV-associated dementia (HAD) and multiple sclerosis. Both glutaminase siRNA and glutaminase inhibition have been shown to be effective in in vitro models of cancer and HAD, suggesting a potential role for small molecule glutaminase inhibitors. However, there are no potent, selective inhibitors of glutaminase currently available. The two prototypical glutaminase inhibitors, BPTES and DON, are either insoluble or non-specific. In a search for more drug-like glutaminase inhibitors, we conducted a screen of 1280 in vivo active drugs (Library of Pharmacologically Active Compounds (LOPAC(1280))) and identified ebselen, chelerythrine and (R)-apomorphine. The newly identified inhibitors exhibited 10 to 1500-fold greater affinities than DON and BPTES and over 100-fold increased efficiency of inhibition. Although non-selective, it is noteworthy that the affinity of ebselen for glutaminase is more potent than any other activity yet described. It is possible that the previously reported biological activity seen with these compounds is due, in part, to glutaminase inhibition. Ebselen, chelerythrine and apomorphine complement the armamentarium of compounds to explore the role of glutaminase in disease.
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Key Words
- 1,2-dimethoxy-N-methyl[1,3]benzodioxolo[5,6-c]phenanthridinium
- 13-methyl-[1,3]-benzodioxolo[5,6-c]-1,3-dioxolo[4,5-i]phenanthridinium
- 2,3-dimethoxy-N-methyl[1,3]benzodioxolo[5,6-c]phenanthridinium
- 2-phenyl-1,2-benzisoselenazol-3[2H]-one
- 5,6,6a,7-tetrahydro-6-methyl-4H-dibenzo[de,g]quinoline-10,11-diol
- 5,6-dihydro-9,10-dimethoxy-benzo[g]-[1,3]benzodioxolo[5,6-a]quinolizinium
- 6-diazo-5-oxo-l-norleucine
- Apomorphine
- BPTES
- Berberine
- CNS
- Cancer
- Chelerythrine
- DON
- Ebselen
- GAC
- GLS
- Glutamate
- Glutaminase
- Glutamine
- HIV
- HIV-associated dementia (HAD)
- HRP
- KGA
- Kinetics
- LGA
- Nitidine
- Norsanguinarine
- Sanguinarine
- [1,3]-benzodioxolo[5,6-c]-1,3-dioxolo[4,5-i]phenanthridine
- bis-2-(5-phenylacetimido-1,2,4-thiadiazol-2-yl)ethyl sulfide
- c-type glutaminase
- central nervous system
- glutaminase
- horse radish peroxidase
- human immunodeficiency virus
- kidney-type glutaminase
- liver-type glutaminase
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Affiliation(s)
- Ajit G Thomas
- Brain Science Institute, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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St.Onge R, Schlecht U, Scharfe C, Evangelista M. Forward chemical genetics in yeast for discovery of chemical probes targeting metabolism. Molecules 2012; 17:13098-115. [PMID: 23128089 PMCID: PMC3539408 DOI: 10.3390/molecules171113098] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2012] [Revised: 10/05/2012] [Accepted: 10/30/2012] [Indexed: 12/28/2022] Open
Abstract
The many virtues that made the yeast Saccharomyces cerevisiae a dominant model organism for genetics and molecular biology, are now establishing its role in chemical genetics. Its experimental tractability (i.e., rapid doubling time, simple culture conditions) and the availability of powerful tools for drug-target identification, make yeast an ideal organism for high-throughput phenotypic screening. It may be especially applicable for the discovery of chemical probes targeting highly conserved cellular processes, such as metabolism and bioenergetics, because these probes would likely inhibit the same processes in higher eukaryotes (including man). Importantly, changes in normal cellular metabolism are associated with a variety of diseased states (including neurological disorders and cancer), and exploiting these changes for therapeutic purposes has accordingly gained considerable attention. Here, we review progress and challenges associated with forward chemical genetic screening in yeast. We also discuss evidence supporting these screens as a useful strategy for discovery of new chemical probes and new druggable targets related to cellular metabolism.
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Affiliation(s)
- Robert St.Onge
- Department of Biochemistry, Stanford Genome Technology Center, Stanford University, Stanford, CA 94305, USA; (U.S.); (C.S.)
- Author to whom correspondence should be addressed; ; Tel.: +1-650-812-1968; Fax: +1-650-812-1973
| | - Ulrich Schlecht
- Department of Biochemistry, Stanford Genome Technology Center, Stanford University, Stanford, CA 94305, USA; (U.S.); (C.S.)
| | - Curt Scharfe
- Department of Biochemistry, Stanford Genome Technology Center, Stanford University, Stanford, CA 94305, USA; (U.S.); (C.S.)
| | - Marie Evangelista
- Molecular Diagnostics and Cancer Cell Biology, Genentech, Inc., South San Francisco, CA 94080, USA;
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Szeliga M, Zgrzywa A, Obara-Michlewska M, Albrecht J. Transfection of a human glioblastoma cell line with liver-type glutaminase (LGA) down-regulates the expression of DNA-repair gene MGMT and sensitizes the cells to alkylating agents. J Neurochem 2012; 123:428-36. [PMID: 22888977 DOI: 10.1111/j.1471-4159.2012.07917.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Revised: 07/30/2012] [Accepted: 08/05/2012] [Indexed: 12/21/2022]
Abstract
O(6)-methylguanine-DNA methyltransferase (MGMT) is a DNA-repair protein promoting resistance of tumor cells to alkylating chemotherapeutic agents. Glioma cells are particularly resistant to this class of drugs which include temozolomide (TMZ) and carmustine (BCNU). A previous study using the RNA microarray technique showed that decrease of MGMT mRNA stands out among the alterations in gene expression caused by the cell growth-depressing transfection of a T98G glioma cell line with liver-type glutaminase (LGA) [Szeliga et al. (2009) Glia, 57, 1014]. Here, we show that stably LGA-transfected cells (TLGA) exhibit decreased MGMT protein expression and activity as compared with non-transfected or mock transfected cells (controls). However, the decrease of expression occurs in the absence of changes in the methylation of the promoter region, indicating that LGA circumvents, by an as yet unknown route, the most common mechanism of MGMT silencing. TLGA turned out to be significantly more sensitive to treatment with 100-1000 μM of TMZ and BCNU in the acute cell growth inhibition assay (MTT). In the clonogenic survival assay, TLGA cells displayed increased sensitivity even to 10 μM TMZ and BCNU. Our results indicate that enrichment with LGA, in addition to inhibiting glioma growth, may facilitate chemotherapeutic intervention.
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Affiliation(s)
- Monika Szeliga
- Department of Neurotoxicology, Mossakowski Medical Research Centre, Polish Academy of Sciences, Warsaw, Poland.
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Lin TC, Chen YR, Kensicki E, Li AYJ, Kong M, Li Y, Mohney RP, Shen HM, Stiles B, Mizushima N, Lin LI, Ann DK. Autophagy: resetting glutamine-dependent metabolism and oxygen consumption. Autophagy 2012; 8:1477-93. [PMID: 22906967 DOI: 10.4161/auto.21228] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Autophagy is a catabolic process that functions in recycling and degrading cellular proteins, and is also induced as an adaptive response to the increased metabolic demand upon nutrient starvation. However, the prosurvival role of autophagy in response to metabolic stress due to deprivation of glutamine, the most abundant nutrient for mammalian cells, is not well understood. Here, we demonstrated that when extracellular glutamine was withdrawn, autophagy provided cells with sub-mM concentrations of glutamine, which played a critical role in fostering cell metabolism. Moreover, we uncovered a previously unknown connection between metabolic responses to ATG5 deficiency and glutamine deprivation, and revealed that WT and atg5 (-/-) MEFs utilized both common and distinct metabolic pathways over time during glutamine deprivation. Although the early response of WT MEFs to glutamine deficiency was similar in many respects to the baseline metabolism of atg5 (-/-) MEFs, there was a concomitant decrease in the levels of essential amino acids and branched chain amino acid catabolites in WT MEFs after 6 h of glutamine withdrawal that distinguished them from the atg5 (-/-) MEFs. Metabolomic profiling, oxygen consumption and pathway focused quantitative RT-PCR analyses revealed that autophagy and glutamine utilization were reciprocally regulated to couple metabolic and transcriptional reprogramming. These findings provide key insights into the critical prosurvival role of autophagy in maintaining mitochondrial oxidative phosphorylation and cell growth during metabolic stress caused by glutamine deprivation.
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Affiliation(s)
- Tsung-Chin Lin
- Department of Molecular Pharmacology, Irell & Manella Graduate School of Biological Sciences, Beckman Research Institute, City of Hope, Duarte, CA, USA
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van den Heuvel APJ, Jing J, Wooster RF, Bachman KE. Analysis of glutamine dependency in non-small cell lung cancer: GLS1 splice variant GAC is essential for cancer cell growth. Cancer Biol Ther 2012; 13:1185-94. [PMID: 22892846 DOI: 10.4161/cbt.21348] [Citation(s) in RCA: 168] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
One of the hallmarks of cancer is metabolic deregulation. Many tumors display increased glucose uptake and breakdown through the process of aerobic glycolysis, also known as the Warburg effect. Less studied in cancer development and progression is the importance of the glutamine (Gln) pathway, which provides cells with a variety of essential products to sustain cell proliferation, such as ATP and macromolecules for biosynthesis. To this end Gln dependency was assessed in a panel of non-small cell lung cancer lines (NSCLC). Gln was found to be essential for the growth of cells with high rates of glutaminolysis, and after exploring multiple genes in the Gln pathway, GLS1 was found to be the key enzyme associated with this dependence. This dependence was confirmed by observing the rescue of decreased growth by exogenous addition of downstream metabolites of glutaminolysis. Expression of the GLS1 splice variant KGA was found to be decreased in tumors compared with normal lung tissue. Transient knock down of GLS1 splice variants indicated that loss of GAC had the most detrimental effect on cancer cell growth. In conclusion, NSCLC cell lines depend on Gln for glutaminolysis to a varying degree, in which the GLS1 splice variant GAC plays an essential role and is a potential target for cancer metabolism-directed therapy.
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A conserved regulatory element located far downstream of the gls
locus modulates gls
expression through chromatin loop formation during myogenesis. FEBS Lett 2012; 586:3464-70. [DOI: 10.1016/j.febslet.2012.07.074] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 07/09/2012] [Accepted: 07/30/2012] [Indexed: 12/30/2022]
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50
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Chien CH, Gao QZ, Cooper AJL, Lyu JH, Sheu SY. Structural insights into the catalytic active site and activity of human Nit2/ω-amidase: kinetic assay and molecular dynamics simulation. J Biol Chem 2012; 287:25715-26. [PMID: 22674578 DOI: 10.1074/jbc.m111.259119] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Human nitrilase-like protein 2 (hNit2) is a putative tumor suppressor, recently identified as ω-amidase. hNit2/ω-amidase plays a crucial metabolic role by catalyzing the hydrolysis of α-ketoglutaramate (the α-keto analog of glutamine) and α-ketosuccinamate (the α-keto analog of asparagine), yielding α-ketoglutarate and oxaloacetate, respectively. Transamination between glutamine and α-keto-γ-methiolbutyrate closes the methionine salvage pathway. Thus, hNit2/ω-amidase links sulfur metabolism to the tricarboxylic acid cycle. To elucidate the catalytic specificity of hNit2/ω-amidase, we performed molecular dynamics simulations on the wild type enzyme and its mutants to investigate enzyme-substrate interactions. Binding free energies were computed to characterize factors contributing to the substrate specificity. The predictions resulting from these computations were verified by kinetic analyses and mutational studies. The activity of hNit2/ω-amidase was determined with α-ketoglutaramate and succinamate as substrates. We constructed three catalytic triad mutants (E43A, K112A, and C153A) and a mutant with a loop 116-128 deletion to validate the role of key residues and the 116-128 loop region in substrate binding and turnover. The molecular dynamics simulations successfully verified the experimental trends in the binding specificity of hNit2/ω-amidase toward various substrates. Our findings have revealed novel structural insights into the binding of substrates to hNit2/ω-amidase. A catalytic triad and the loop residues 116-128 of hNit2 play an essential role in supporting the stability of the enzyme-substrate complex, resulting in the generation of the catalytic products. These observations are predicted to be of benefit in the design of new inhibitors or activators for research involving cancer and hyperammonemic diseases.
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Affiliation(s)
- Chin-Hsiang Chien
- Institute of Biochemistry and Molecular Biology, National Yang-Ming University, Taipei 112, Taiwan
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