1
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Prunier C, Chavrier P, Boissan M. Mechanisms of action of NME metastasis suppressors - a family affair. Cancer Metastasis Rev 2023; 42:1155-1167. [PMID: 37353690 PMCID: PMC10713741 DOI: 10.1007/s10555-023-10118-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 06/09/2023] [Indexed: 06/25/2023]
Abstract
Metastatic progression is regulated by metastasis promoter and suppressor genes. NME1, the prototypic and first described metastasis suppressor gene, encodes a nucleoside diphosphate kinase (NDPK) involved in nucleotide metabolism; two related family members, NME2 and NME4, are also reported as metastasis suppressors. These proteins physically interact with members of the GTPase dynamin family, which have key functions in membrane fission and fusion reactions necessary for endocytosis and mitochondrial dynamics. Evidence supports a model in which NDPKs provide GTP to dynamins to maintain a high local GTP concentration for optimal dynamin function. NME1 and NME2 are cytosolic enzymes that provide GTP to dynamins at the plasma membrane, which drive endocytosis, suggesting that these NMEs are necessary to attenuate signaling by receptors on the cell surface. Disruption of NDPK activity in NME-deficient tumors may thus drive metastasis by prolonging signaling. NME4 is a mitochondrial enzyme that interacts with the dynamin OPA1 at the mitochondria inner membrane to drive inner membrane fusion and maintain a fused mitochondrial network. This function is consistent with the current view that mitochondrial fusion inhibits the metastatic potential of tumor cells whereas mitochondrial fission promotes metastasis progression. The roles of NME family members in dynamin-mediated endocytosis and mitochondrial dynamics and the intimate link between these processes and metastasis provide a new framework to understand the metastasis suppressor functions of NME proteins.
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Affiliation(s)
- Céline Prunier
- Sorbonne Université, INSERM UMR_S 938, Centre de Recherche Saint-Antoine, CRSA, Paris, France
| | - Philippe Chavrier
- Actin and Membrane Dynamics Laboratory, Institut Curie - Research Center, CNRS UMR144, PSL Research University, Paris, France
| | - Mathieu Boissan
- Sorbonne Université, INSERM UMR_S 938, Centre de Recherche Saint-Antoine, CRSA, Paris, France.
- Laboratoire de Biochimie Endocrinienne Et Oncologique, Oncobiologie Cellulaire Et Moléculaire, APHP, Hôpitaux Universitaires Pitié-Salpêtrière-Charles Foix, Paris, France.
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2
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Gupta S, Westacott MJ, Ayers DG, Weiss SJ, Whitley P, Mueller C, Weaver DC, Schneider DJ, Karimpour-Fard A, Hunter LE, Drolet DW, Janjic N. Plasma proteome of growing tumors. Sci Rep 2023; 13:12195. [PMID: 37500700 PMCID: PMC10374562 DOI: 10.1038/s41598-023-38079-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 07/03/2023] [Indexed: 07/29/2023] Open
Abstract
Early detection of cancer is vital for the best chance of successful treatment, but half of all cancers are diagnosed at an advanced stage. A simple and reliable blood screening test applied routinely would therefore address a major unmet medical need. To gain insight into the value of protein biomarkers in early detection and stratification of cancer we determined the time course of changes in the plasma proteome of mice carrying transplanted human lung, breast, colon, or ovarian tumors. For protein measurements we used an aptamer-based assay which simultaneously measures ~ 5000 proteins. Along with tumor lineage-specific biomarkers, we also found 15 markers shared among all cancer types that included the energy metabolism enzymes glyceraldehyde-3-phosphate dehydrogenase, glucose-6-phophate isomerase and dihydrolipoyl dehydrogenase as well as several important biomarkers for maintaining protein, lipid, nucleotide, or carbohydrate balance such as tryptophanyl t-RNA synthetase and nucleoside diphosphate kinase. Using significantly altered proteins in the tumor bearing mice, we developed models to stratify tumor types and to estimate the minimum detectable tumor volume. Finally, we identified significantly enriched common and unique biological pathways among the eight tumor cell lines tested.
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Affiliation(s)
- Shashi Gupta
- SomaLogic, Inc., 2945 Wilderness Place, Boulder, CO, 80301, USA
| | | | - Deborah G Ayers
- SomaLogic, Inc., 2945 Wilderness Place, Boulder, CO, 80301, USA
| | - Sophie J Weiss
- SomaLogic, Inc., 2945 Wilderness Place, Boulder, CO, 80301, USA
| | - Penn Whitley
- Boulder BioConsulting, Inc., 325 S 68th St., Boulder, CO, 80303, USA
| | | | - Daniel C Weaver
- Boulder BioConsulting, Inc., 325 S 68th St., Boulder, CO, 80303, USA
| | | | - Anis Karimpour-Fard
- University of Colorado School of Medicine, Mailstop 8303, Aurora, CO, 80045, USA
| | - Lawrence E Hunter
- University of Colorado School of Medicine, Mailstop 8303, Aurora, CO, 80045, USA
| | - Daniel W Drolet
- SomaLogic, Inc., 2945 Wilderness Place, Boulder, CO, 80301, USA
| | - Nebojsa Janjic
- SomaLogic, Inc., 2945 Wilderness Place, Boulder, CO, 80301, USA.
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3
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Extracellular Vesicle-Mediated Metastasis Suppressors NME1 and NME2 Modify Lipid Metabolism in Fibroblasts. Cancers (Basel) 2022; 14:cancers14163913. [PMID: 36010906 PMCID: PMC9406105 DOI: 10.3390/cancers14163913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/07/2022] [Accepted: 08/09/2022] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Communication between cancer and stromal cells involves paracrine signalling mediated by extracellular vesicles (EVs). EVs transmit essential factors among cells of the tumour microenvironment. EVs derived from both cancer and stromal cells have been implicated in tumour progression. In this study, we focused on the first identified metastasis suppressor NME1, and on its close homolog NME2, and investigated their function in EVs in the interplay between cancer and stromal cells. Abstract Nowadays, extracellular vesicles (EVs) raise a great interest as they are implicated in intercellular communication between cancer and stromal cells. Our aim was to understand how vesicular NME1 and NME2 released by breast cancer cells influence the tumour microenvironment. As a model, we used human invasive breast carcinoma cells overexpressing NME1 or NME2, and first analysed in detail the presence of both isoforms in EV subtypes by capillary Western immunoassay (WES) and immunoelectron microscopy. Data obtained by both methods showed that NME1 was present in medium-sized EVs or microvesicles, whereas NME2 was abundant in both microvesicles and small-sized EVs or exosomes. Next, human skin-derived fibroblasts were treated with NME1 or NME2 containing EVs, and subsequently mRNA expression changes in fibroblasts were examined. RNAseq results showed that the expression of fatty acid and cholesterol metabolism-related genes was decreased significantly in response to NME1 or NME2 containing EV treatment. We found that FASN (fatty acid synthase) and ACSS2 (acyl-coenzyme A synthetase short-chain family member 2), related to fatty acid synthesis and oxidation, were underexpressed in NME1/2-EV-treated fibroblasts. Our data show an emerging link between NME-containing EVs and regulation of tumour metabolism.
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4
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Telomerase in Cancer: Function, Regulation, and Clinical Translation. Cancers (Basel) 2022; 14:cancers14030808. [PMID: 35159075 PMCID: PMC8834434 DOI: 10.3390/cancers14030808] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/29/2022] [Accepted: 02/02/2022] [Indexed: 02/04/2023] Open
Abstract
Simple Summary Cells undergoing malignant transformation must circumvent replicative senescence and eventual cell death associated with progressive telomere shortening that occurs through successive cell division. To do so, malignant cells reactivate telomerase to extend their telomeres and achieve cellular immortality, which is a “Hallmark of Cancer”. Here we review the telomere-dependent and -independent functions of telomerase in cancer, as well as its potential as a biomarker and therapeutic target to diagnose and treat cancer patients. Abstract During the process of malignant transformation, cells undergo a series of genetic, epigenetic, and phenotypic alterations, including the acquisition and propagation of genomic aberrations that impart survival and proliferative advantages. These changes are mediated in part by the induction of replicative immortality that is accompanied by active telomere elongation. Indeed, telomeres undergo dynamic changes to their lengths and higher-order structures throughout tumor formation and progression, processes overseen in most cancers by telomerase. Telomerase is a multimeric enzyme whose function is exquisitely regulated through diverse transcriptional, post-transcriptional, and post-translational mechanisms to facilitate telomere extension. In turn, telomerase function depends not only on its core components, but also on a suite of binding partners, transcription factors, and intra- and extracellular signaling effectors. Additionally, telomerase exhibits telomere-independent regulation of cancer cell growth by participating directly in cellular metabolism, signal transduction, and the regulation of gene expression in ways that are critical for tumorigenesis. In this review, we summarize the complex mechanisms underlying telomere maintenance, with a particular focus on both the telomeric and extratelomeric functions of telomerase. We also explore the clinical utility of telomeres and telomerase in the diagnosis, prognosis, and development of targeted therapies for primary, metastatic, and recurrent cancers.
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5
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Ma Z, Li R, Hu R, Deng X, Xu Y, Zheng W, Yi J, Wang Y, Chen C. Brucella abortus BspJ Is a Nucleomodulin That Inhibits Macrophage Apoptosis and Promotes Intracellular Survival of Brucella. Front Microbiol 2020; 11:599205. [PMID: 33281799 PMCID: PMC7688787 DOI: 10.3389/fmicb.2020.599205] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 10/23/2020] [Indexed: 12/11/2022] Open
Abstract
To date, a variety of Brucella effector proteins have been found to mediate host cell secretion, autophagy, inflammation, and other signal pathways, but nuclear effector proteins have not yet been reported. We identified the first Brucella nucleomodulin, BspJ, and we screened out the BspJ interaction host proteins NME/NM23 nucleoside diphosphate kinase 2 (NME2) and creatine kinase B (CKB) through yeast two-hybrid and co-immunoprecipitation assays. These proteins are related to the host cell energy synthesis, metabolism, and apoptosis pathways. Brucella nucleomodulin BspJ will decrease the expression level of NME2 and CKB. In addition, BspJ gene deletion strains promoted the apoptosis of macrophages and reduced the intracellular survival of Brucella in host cells. In short, we found nucleomodulin BspJ may directly or indirectly regulate host cell apoptosis through the interaction with NME2 and CKB by mediating energy metabolism pathways in response to the intracellular circulation of Brucella infection, but the mechanism needs further study.
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Affiliation(s)
- Zhongchen Ma
- International Joint Research Center for Animal Health Breeding, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Collaborative Innovation Center for Prevention and Control of High Incidence Zoonotic Infectious Diseases in Western China, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Key Laboratory of Control and Prevention of Animal Disease, Xinjiang Production & Construction Corps, College of Animal Science and Technology, Shihezi University, Shihezi, China
| | - Ruirui Li
- International Joint Research Center for Animal Health Breeding, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Collaborative Innovation Center for Prevention and Control of High Incidence Zoonotic Infectious Diseases in Western China, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Key Laboratory of Control and Prevention of Animal Disease, Xinjiang Production & Construction Corps, College of Animal Science and Technology, Shihezi University, Shihezi, China
| | - Ruirui Hu
- College of Life Science, Shihezi University, Shihezi, China
| | - Xiaoyu Deng
- International Joint Research Center for Animal Health Breeding, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Collaborative Innovation Center for Prevention and Control of High Incidence Zoonotic Infectious Diseases in Western China, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Key Laboratory of Control and Prevention of Animal Disease, Xinjiang Production & Construction Corps, College of Animal Science and Technology, Shihezi University, Shihezi, China
| | - Yimei Xu
- Xinjiang Center for Disease Control and Prevention, Urumqi, China
| | - Wei Zheng
- International Joint Research Center for Animal Health Breeding, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Collaborative Innovation Center for Prevention and Control of High Incidence Zoonotic Infectious Diseases in Western China, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Key Laboratory of Control and Prevention of Animal Disease, Xinjiang Production & Construction Corps, College of Animal Science and Technology, Shihezi University, Shihezi, China
| | - Jihai Yi
- International Joint Research Center for Animal Health Breeding, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Collaborative Innovation Center for Prevention and Control of High Incidence Zoonotic Infectious Diseases in Western China, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Key Laboratory of Control and Prevention of Animal Disease, Xinjiang Production & Construction Corps, College of Animal Science and Technology, Shihezi University, Shihezi, China
| | - Yong Wang
- International Joint Research Center for Animal Health Breeding, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Collaborative Innovation Center for Prevention and Control of High Incidence Zoonotic Infectious Diseases in Western China, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Key Laboratory of Control and Prevention of Animal Disease, Xinjiang Production & Construction Corps, College of Animal Science and Technology, Shihezi University, Shihezi, China
| | - Chuangfu Chen
- International Joint Research Center for Animal Health Breeding, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Collaborative Innovation Center for Prevention and Control of High Incidence Zoonotic Infectious Diseases in Western China, College of Animal Science and Technology, Shihezi University, Shihezi, China
- Key Laboratory of Control and Prevention of Animal Disease, Xinjiang Production & Construction Corps, College of Animal Science and Technology, Shihezi University, Shihezi, China
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6
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Zheng S, Liu T, Liu Q, Yang L, Zhang Q, Han X, Shen T, Zhang X, Lu X. Widely targeted metabolomic analyses unveil the metabolic variations after stable knock-down of NME4 in esophageal squamous cell carcinoma cells. Mol Cell Biochem 2020; 471:81-89. [PMID: 32504364 DOI: 10.1007/s11010-020-03768-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 05/26/2020] [Indexed: 01/23/2023]
Abstract
NME4, also designated nm23-H4 or NDPK-D, has been known for years for its well-established roles in the synthesis of nucleoside triphosphates, though; little has been known regarding the differential metabolites involved as well as the biological roles NME4 plays in proliferation and invasion of esophageal squamous cell carcinoma (ESCC) cells. To understand the biological roles of NME4 in ESCC cells, lentiviral-based short hairpin RNA interference (shRNA) vectors were constructed and used to stably knock down NME4. Then, the proliferative and invasive variations were assessed using MTT, Colony formation and Transwell assays. To understand the metabolites involved after silencing of NME4 in ESCC cells, widely targeted metabolomic screening was taken. It was discovered that silencing of NME4 can profoundly suppress the proliferation and invasion in ESCC cells in vitro. Metabolically, a total of 11 differential metabolites were screened. KEGG analyses revealed that Tryptophan, Riboflavin, Purine, Nicotinate, lysine degradation, and Linoleic acid metabolism were also involved in addition to the well-established nucleotides metabolism. Some of these differential metabolites, say, 2-Picolinic Acid, Nicotinic Acid and Pipecolinic Acid were suggested to be associated with tumor immunomodulation. The data we described here support the idea that metabolisms occurred in mitochondrial was closely related to tumor immunity.
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Affiliation(s)
- Shutao Zheng
- Clinical Medical Research Institute, First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
| | - Tao Liu
- Health Management Center, Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
| | - Qing Liu
- Clinical Medical Research Institute, First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
| | - Lifei Yang
- Clinical Medical Research Institute, First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
| | - Qiqi Zhang
- Clinical Medical Research Institute, First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
| | - Xiujuan Han
- Clinical Medical Research Institute, First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
| | - Tongxue Shen
- Clinical Medical Research Institute, First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
| | - Xiao Zhang
- Clinical Medical Research Institute, First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China
| | - Xiaomei Lu
- Clinical Medical Research Institute, First Affiliated Hospital of Xinjiang Medical University, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China.
- State Key Laboratory of Pathogenesis, Prevention, Treatment of Central Asian High Incidence Diseases, Xinjiang Uygur Autonomous Region, Ürümqi, People's Republic of China.
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7
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Kang JAKHS, Bae KH, Lee SC, Oh KJ, Kim WK, Kim WK. Roles of Protein Histidine Phosphatase 1 (PHPT1) in Brown Adipocyte Differentiation. J Microbiol Biotechnol 2020; 30:306-312. [PMID: 31752058 PMCID: PMC9728239 DOI: 10.4014/jmb.1909.09003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Despite the importance of brown adipocytes as a therapeutic target for the prevention and treatment of obesity, the molecular mechanism underlying brown adipocyte differentiation is not fully understood. In particular, the role of post-translational modifications in brown adipocyte differentiation has not been extensively studied. Histidine phosphorylation is increasingly recognized an important process for protein post-translational modifications. In this study, we show that histidine phosphorylation patterns change during brown adipocyte differentiation. In addition, the expression level of protein histidine phosphatase 1 (PHPT1), a major mammalian phosphohistidine phosphatase, is reduced rapidly at the early phase of differentiation and recovers at the later phase. During white adipocyte differentiation of 3T3- L1 preadipocytes, however, the expression level of PHPT1 do not significantly change. Knockdown of PHPT1 promotes brown adipocyte differentiation, whereas ectopic expression of PHPT1 suppresses brown adipocyte differentiation. These results collectively suggest that histidine phosphorylation is closely linked to brown adipocyte differentiation and could be a therapeutic target for obesity and related metabolic diseases.
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Affiliation(s)
- Joo Ae Kang Hyun Sup Kang
- Metabolic Regulation Research Center, KRIBB, Daejeon 344, Republic of Korea,Department of Functional Genomics, University of Science and Technology (UST), UST-KRIBB School, Daejeon 34141, Republic of Korea
| | - Kwang-Hee Bae
- Metabolic Regulation Research Center, KRIBB, Daejeon 344, Republic of Korea,Department of Functional Genomics, University of Science and Technology (UST), UST-KRIBB School, Daejeon 34141, Republic of Korea
| | - Sang Chul Lee
- Metabolic Regulation Research Center, KRIBB, Daejeon 344, Republic of Korea,Department of Functional Genomics, University of Science and Technology (UST), UST-KRIBB School, Daejeon 34141, Republic of Korea
| | - Kyoung-Jin Oh
- Metabolic Regulation Research Center, KRIBB, Daejeon 344, Republic of Korea,Department of Functional Genomics, University of Science and Technology (UST), UST-KRIBB School, Daejeon 34141, Republic of Korea,K.-J.O. Phone: +82-42-879-8265 Fax: +82-42-860-4149 E-mail:
| | - Won Kon Kim
- Metabolic Regulation Research Center, KRIBB, Daejeon 344, Republic of Korea,Department of Functional Genomics, University of Science and Technology (UST), UST-KRIBB School, Daejeon 34141, Republic of Korea,Corresponding authors W.K.K. Phone: +82-42-860-4265 Fax: +82-42-860-4149 E-mail:
| | - Won Kon Kim
- Metabolic Regulation Research Center, KRIBB, Daejeon 34141, Republic of Korea.,Department of Functional Genomics, University of Science and Technology (UST), UST-KRIBB School, Daejeon 34141, Republic of Korea
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8
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Potel CM, Fasci D, Heck AJ. Mix and match of the tumor metastasis suppressor Nm23 protein isoforms
in vitro
and
in vivo. FEBS J 2018; 285:2856-2868. [DOI: 10.1111/febs.14525] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/06/2018] [Accepted: 06/01/2018] [Indexed: 01/14/2023]
Affiliation(s)
- Clement M. Potel
- Biomolecular Mass Spectrometry and Proteomics Bijvoet Center for Biomolecular Research Utrecht Institute of Pharmaceutical Sciences Utrecht University The Netherlands
- Netherlands Proteomics Centre Utrecht The Netherlands
| | - Domenico Fasci
- Biomolecular Mass Spectrometry and Proteomics Bijvoet Center for Biomolecular Research Utrecht Institute of Pharmaceutical Sciences Utrecht University The Netherlands
- Netherlands Proteomics Centre Utrecht The Netherlands
| | - Albert J.R. Heck
- Biomolecular Mass Spectrometry and Proteomics Bijvoet Center for Biomolecular Research Utrecht Institute of Pharmaceutical Sciences Utrecht University The Netherlands
- Netherlands Proteomics Centre Utrecht The Netherlands
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9
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NM23/NDPK proteins in transcription regulatory functions and chromatin modulation: emerging trends. J Transl Med 2018; 98:175-181. [PMID: 29083410 PMCID: PMC5854247 DOI: 10.1038/labinvest.2017.98] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 06/23/2017] [Accepted: 06/30/2017] [Indexed: 12/12/2022] Open
Abstract
NM23/NDPK proteins have been studied for their metastasis suppressor role but the molecular pathways involved in this process are not very vivid. Nucleotide binding and kinase activities of NM23 proteins implicated in anti-metastatic effects have been widely studied. In addition to these, transcriptional regulation adds another arm to the versatility of NM23 proteins that together with the other functions may contribute to better understanding of underlying mechanisms. In this review we discuss emerging reports describing the role of NM23 proteins in gene regulation and chromatin modulation in association with other factors or on their own.
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10
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Saha D, Singh A, Hussain T, Srivastava V, Sengupta S, Kar A, Dhapola P, Dhople V, Ummanni R, Chowdhury S. Epigenetic suppression of human telomerase ( hTERT) is mediated by the metastasis suppressor NME2 in a G-quadruplex-dependent fashion. J Biol Chem 2017; 292:15205-15215. [PMID: 28717007 PMCID: PMC5602382 DOI: 10.1074/jbc.m117.792077] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 07/17/2017] [Indexed: 12/11/2022] Open
Abstract
Transcriptional activation of the human telomerase reverse transcriptase (hTERT) gene, which remains repressed in adult somatic cells, is critical during tumorigenesis. Several transcription factors and the epigenetic state of the hTERT promoter are known to be important for tight control of hTERT in normal tissues, but the molecular mechanisms leading to hTERT reactivation in cancer are not well-understood. Surprisingly, here we found occupancy of the metastasis suppressor non-metastatic 2 (NME2) within the hTERT core promoter in HT1080 fibrosarcoma cells and HCT116 colon cancer cells and NME2-mediated transcriptional repression of hTERT in these cells. We also report that loss of NME2 results in up-regulated hTERT expression. Mechanistically, additional results indicated that the RE1-silencing transcription factor (REST)–lysine-specific histone demethylase 1 (LSD1) co-repressor complex associates with the hTERT promoter in an NME2-dependent way and that this assembly is required for maintaining repressive chromatin at the hTERT promoter. Interestingly, a G-quadruplex motif at the hTERT promoter was essential for occupancy of NME2 and the REST repressor complex on the hTERT promoter. In light of this mechanistic insight, we studied the effects of G-quadruplex–binding ligands on hTERT expression and observed that several of these ligands repressed hTERT expression. Together, our results support a mechanism of hTERT epigenetic control involving a G-quadruplex promoter motif, which potentially can be targeted by tailored small molecules.
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Affiliation(s)
- Dhurjhoti Saha
- From the Genomics and Molecular Medicine Unit.,Academy of Scientific & Innovative Research (AcSIR), CSIR-Institute of Genomics and Integrative Biology, Council of Scientific and Industrial Research (CSIR), Mathura Road, New Delhi 110025, India and
| | - Ankita Singh
- From the Genomics and Molecular Medicine Unit.,Academy of Scientific & Innovative Research (AcSIR), CSIR-Institute of Genomics and Integrative Biology, Council of Scientific and Industrial Research (CSIR), Mathura Road, New Delhi 110025, India and
| | | | | | | | - Anirban Kar
- From the Genomics and Molecular Medicine Unit
| | - Parashar Dhapola
- G.N.R. Knowledge Centre for Genome Informatics, and.,Academy of Scientific & Innovative Research (AcSIR), CSIR-Institute of Genomics and Integrative Biology, Council of Scientific and Industrial Research (CSIR), Mathura Road, New Delhi 110025, India and
| | - Vishnu Dhople
- Centre for Chemical Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Ramesh Ummanni
- Centre for Chemical Biology, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Shantanu Chowdhury
- From the Genomics and Molecular Medicine Unit, .,G.N.R. Knowledge Centre for Genome Informatics, and.,Academy of Scientific & Innovative Research (AcSIR), CSIR-Institute of Genomics and Integrative Biology, Council of Scientific and Industrial Research (CSIR), Mathura Road, New Delhi 110025, India and
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11
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Francois-Moutal L, Ouberai MM, Maniti O, Welland ME, Strzelecka-Kiliszek A, Wos M, Pikula S, Bandorowicz-Pikula J, Marcillat O, Granjon T. Two-Step Membrane Binding of NDPK-B Induces Membrane Fluidity Decrease and Changes in Lipid Lateral Organization and Protein Cluster Formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:12923-12933. [PMID: 27934520 DOI: 10.1021/acs.langmuir.6b03789] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nucleoside diphosphate kinases (NDPKs) are crucial elements in a wide array of cellular physiological or pathophysiological processes such as apoptosis, proliferation, or metastasis formation. Among the NDPK isoenzymes, NDPK-B, a cytoplasmic protein, was reported to be associated with several biological membranes such as plasma or endoplasmic reticulum membranes. Using several membrane models (liposomes, lipid monolayers, and supported lipid bilayers) associated with biophysical approaches, we show that lipid membrane binding occurs in a two-step process: first, initiation by a strong electrostatic adsorption process and followed by shallow penetration of the protein within the membrane. The NDPK-B binding leads to a decrease in membrane fluidity and formation of protein patches. The ability of NDPK-B to form microdomains at the membrane level may be related to protein-protein interactions triggered by its association with anionic phospholipids. Such accumulation of NDPK-B would amplify its effects in functional platform formation and protein recruitment at the membrane.
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Affiliation(s)
- Liberty Francois-Moutal
- Organisation et Dynamique des Membrane Biologiques, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, CNRS UMR 5246 ICBMS , Bâtiment Chevreul, 43 Boulevard du 11 Novembre 1918, Villeurbanne Cedex 69622, France
| | - Myriam M Ouberai
- Nanoscience Centre, University of Cambridge , 11 J.J. Thomson Avenue Cambridge, Cambridge CB3 0FF, U.K
| | - Ofelia Maniti
- Organisation et Dynamique des Membrane Biologiques, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, CNRS UMR 5246 ICBMS , Bâtiment Chevreul, 43 Boulevard du 11 Novembre 1918, Villeurbanne Cedex 69622, France
| | - Mark E Welland
- Nanoscience Centre, University of Cambridge , 11 J.J. Thomson Avenue Cambridge, Cambridge CB3 0FF, U.K
| | - Agnieszka Strzelecka-Kiliszek
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences , 3 Pasteur Street, Warsaw 02-093, Poland
| | - Marcin Wos
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences , 3 Pasteur Street, Warsaw 02-093, Poland
| | - Slawomir Pikula
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences , 3 Pasteur Street, Warsaw 02-093, Poland
| | - Joanna Bandorowicz-Pikula
- Department of Biochemistry, Nencki Institute of Experimental Biology, Polish Academy of Sciences , 3 Pasteur Street, Warsaw 02-093, Poland
| | - Olivier Marcillat
- Organisation et Dynamique des Membrane Biologiques, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, CNRS UMR 5246 ICBMS , Bâtiment Chevreul, 43 Boulevard du 11 Novembre 1918, Villeurbanne Cedex 69622, France
| | - Thierry Granjon
- Organisation et Dynamique des Membrane Biologiques, Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, CNRS UMR 5246 ICBMS , Bâtiment Chevreul, 43 Boulevard du 11 Novembre 1918, Villeurbanne Cedex 69622, France
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12
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Ranjan A, Bera K, Iwakuma T. Murine double minute 2, a potential p53-independent regulator of liver cancer metastasis. HEPATOMA RESEARCH 2016; 2:114-121. [PMID: 28944296 PMCID: PMC5609474 DOI: 10.20517/2394-5079.2015.67] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Hepatocellular carcinoma (HCC) has emerged as one of the most commonly diagnosed forms of human cancer; yet, the mechanisms underlying HCC progression remain unclear. Unlike other cancers, systematic chemotherapy is not effective for HCC patients, while surgical resection and liver transplantation are the most viable treatment options. Thus, identifying factors or pathways that suppress HCC progression would be crucial for advancing treatment strategies for HCC. The murine double minute 2 (MDM2)-p53 pathway is impaired in most of the cancer types, including HCC, and MDM2 is overexpressed in approximately 30% of HCC. Overexpression of MDM2 is reported to be well correlated with metastasis, drug resistance, and poor prognosis of multiple cancer types, including HCC. Importantly, these correlations are observed even when p53 is mutated. Indeed, p53-independent functions of overexpressed MDM2 in cancer progression have been suitably demonstrated. In this review article, we summarize potential effectors of MDM2 that promote or suppress cancer metastasis and discuss the p53-independent roles of MDM2 in liver cancer metastasis from clinical as well as biological perspectives.
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Affiliation(s)
- Atul Ranjan
- Department of Cancer Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Kaustav Bera
- Department of Cancer Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Tomoo Iwakuma
- Department of Cancer Biology, University of Kansas Medical Center, Kansas City, KS 66160, USA
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13
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Fuhs SR, Meisenhelder J, Aslanian A, Ma L, Zagorska A, Stankova M, Binnie A, Al-Obeidi F, Mauger J, Lemke G, Yates JR, Hunter T. Monoclonal 1- and 3-Phosphohistidine Antibodies: New Tools to Study Histidine Phosphorylation. Cell 2015; 162:198-210. [PMID: 26140597 DOI: 10.1016/j.cell.2015.05.046] [Citation(s) in RCA: 133] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Revised: 03/13/2015] [Accepted: 04/20/2015] [Indexed: 01/18/2023]
Abstract
Histidine phosphorylation (pHis) is well studied in bacteria; however, its role in mammalian signaling remains largely unexplored due to the lack of pHis-specific antibodies and the lability of the phosphoramidate (P-N) bond. Both imidazole nitrogens can be phosphorylated, forming 1-phosphohistidine (1-pHis) or 3-phosphohistidine (3-pHis). We have developed monoclonal antibodies (mAbs) that specifically recognize 1-pHis or 3-pHis; they do not cross-react with phosphotyrosine or the other pHis isomer. Assays based on the isomer-specific autophosphorylation of NME1 and phosphoglycerate mutase were used with immunoblotting and sequencing IgG variable domains to screen, select, and characterize anti-1-pHis and anti-3-pHis mAbs. Their sequence independence was determined by blotting synthetic peptide arrays, and they have been tested for immunofluorescence staining and immunoaffinity purification, leading to putative identification of pHis-containing proteins. These reagents should be broadly useful for identification of pHis substrates and functional study of pHis using a variety of immunological, proteomic, and biological assays.
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Affiliation(s)
- Stephen Rush Fuhs
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Jill Meisenhelder
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Aaron Aslanian
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA; Department of Chemical Physiology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Li Ma
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - Anna Zagorska
- Molecular Neurobiology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | | | - Alan Binnie
- Tucson Innovation Center, Sanofi, Tucson, AZ 85755, USA
| | | | | | - Greg Lemke
- Molecular Neurobiology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA
| | - John R Yates
- Department of Chemical Physiology, The Scripps Research Institute, La Jolla, CA 92037, USA
| | - Tony Hunter
- Molecular and Cell Biology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA.
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14
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Liu YF, Yang A, Liu W, Wang C, Wang M, Zhang L, Wang D, Dong JF, Li M. NME2 reduces proliferation, migration and invasion of gastric cancer cells to limit metastasis. PLoS One 2015; 10:e0115968. [PMID: 25700270 PMCID: PMC4336288 DOI: 10.1371/journal.pone.0115968] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Accepted: 12/03/2014] [Indexed: 02/07/2023] Open
Abstract
Gastric cancer is one of the most common malignancies and has a high rate of metastasis. We hypothesize that NME2 (Nucleoside Diphosphate Kinase 2), which has previously been considered as an anti-metastatic gene, plays a role in the invasiveness of gastric cancer cells. Using a tissue chip technology and immunohistochemistry, we demonstrated that NME2 expression was associated with levels of differentiation of gastric cancer cells and their metastasis into the lymph nodes. When the NME2 gene product was over-expressed by ;in vitro stable transfection, cells from BGC823 and MKN45 gastric cancer cell lines had reduced rates of proliferation, migration, and invasion through the collagen matrix, suggesting an inhibitory activity of NME2 in the propagation and invasion of gastric cancer. NME2 could, therefore, severe as a risk marker for gastric cancer invasiveness and a potential new target for gene therapy to enhance or induce NME2 expression.
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Affiliation(s)
- Yan-fei Liu
- Institute of Pathology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
- Department of Pathology, Xi’an Children’s Hospital, Xi’an, China
| | - Aijun Yang
- Institute of Pathology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Wei Liu
- Institute of Pathology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Chenyu Wang
- Institute of Pathology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Min Wang
- Institute of Pathology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Lihan Zhang
- Institute of Pathology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Dongcang Wang
- Institute of Pathology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Jing-fei Dong
- Puget Sound Blood Center, Seattle, Washington, United States of America
- Division of Hematology, Department of Medicine, University of Washington, School of Medicine, Seattle, Washington, United States of America
| | - Min Li
- Institute of Pathology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou, China
- * E-mail:
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15
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The ubiquitin E3 ligase SCF-FBXO24 recognizes deacetylated nucleoside diphosphate kinase A to enhance its degradation. Mol Cell Biol 2015; 35:1001-13. [PMID: 25582197 DOI: 10.1128/mcb.01185-14] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The Skp-Cul-F box (SCF) ubiquitin E3 ligase machinery recognizes predominantly phosphodegrons or, less commonly, an (I/L)Q molecular signature within substrates to facilitate their recruitment in mediating protein ubiquitination and degradation. Here, we examined the molecular signals that determine the turnover of the multifunctional enzyme nucleoside diphosphate kinase A (NDPK-A) that controls cell proliferation. NDPK-A protein exhibits a half-life of ∼6 h in HeLa cells and is targeted for ubiquitylation through actions of the F-box protein FBXO24. SCF-FBXO24 polyubiquitinates NDPK-A at K85, and two NH(2)-terminal residues, L55 and K56, were identified as important molecular sites for FBXO24 interaction. Importantly, K56 acetylation impairs its interaction with FBXO24, and replacing K56 with Q56, an acetylation mimic, reduces NDPK-A FBXO24 binding capacity. The acetyltransferase GCN5 catalyzes K56 acetylation within NDPK-A, thereby stabilizing NDPK-A, whereas GCN5 depletion in cells accelerates NDPK-A degradation. Cellular expression of an NDPK-A acetylation mimic or FBXO24 silencing increases NDPK-A life span which, in turn, impairs cell migration and wound healing. We propose that lysine acetylation when presented in the appropriate context may be recognized by some F-box proteins as a unique inhibitory molecular signal for their recruitment to restrict substrate degradation.
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Kar A, Chowdhury S. Inhibition of telomerase activity by NME2: impact on metastasis suppression? Naunyn Schmiedebergs Arch Pharmacol 2014; 388:235-41. [PMID: 25547372 PMCID: PMC4469096 DOI: 10.1007/s00210-014-1077-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 11/25/2014] [Indexed: 12/25/2022]
Abstract
Though anti-metastatic function of non-metastatic 2 (NME2) has been implicated in multiple cancers, mechanisms of metastases control by NME2 are not clearly understood. Recent observations indicating the involvement of telomerase, the ribonucleoprotein required for telomere synthesis, in metastatic outcome are interesting. Notably, though the role of telomerase dysfunction in tumorigenesis is relatively well studied, involvement in metastasis progression is poorly understood. Recent findings demonstrate NME2 presence at telomere ends, association with telomerase, and NME2’s role in inhibition of telomerase activity in cancer cells. These present a novel opportunity to investigate mechanisms underlying NME2-mediated metastasis suppression.
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Affiliation(s)
- Anirban Kar
- Proteomics and Structural Biology Unit, CSIR-Institute of Genomics and Integrative Biology, Mathura Road, New Delhi, 110025, DELHI, India
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17
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Thakur RK, Yadav VK, Kumar A, Singh A, Pal K, Hoeppner L, Saha D, Purohit G, Basundra R, Kar A, Halder R, Kumar P, Baral A, Kumar MJM, Baldi A, Vincenzi B, Lorenzon L, Banerjee R, Kumar P, Shridhar V, Mukhopadhyay D, Chowdhury S. Non-metastatic 2 (NME2)-mediated suppression of lung cancer metastasis involves transcriptional regulation of key cell adhesion factor vinculin. Nucleic Acids Res 2014; 42:11589-600. [PMID: 25249619 PMCID: PMC4191424 DOI: 10.1093/nar/gku860] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Tumor metastasis refers to spread of a tumor from site of its origin to distant organs and causes majority of cancer deaths. Although >30 metastasis suppressor genes (MSGs) that negatively regulate metastasis have been identified so far, two issues are poorly understood: first, which MSGs oppose metastasis in a tumor type, and second, which molecular function of MSG controls metastasis. Herein, integrative analyses of tumor-transcriptomes (n = 382), survival data (n = 530) and lymph node metastases (n = 100) in lung cancer patients identified non-metastatic 2 (NME2) as a key MSG from a pool of >30 metastasis suppressors. Subsequently, we generated a promoter-wide binding map for NME2 using chromatin immunoprecipitation with promoter microarrays (ChIP-chip), and transcriptome profiling. We discovered novel targets of NME2 which are involved in focal adhesion signaling. Importantly, we detected binding of NME2 in promoter of focal adhesion factor, vinculin. Reduced expression of NME2 led to enhanced transcription of vinculin. In comparison, NME1, a close homolog of NME2, did not bind to vinculin promoter nor regulate its expression. In line, enhanced metastasis of NME2-depleted lung cancer cells was found in zebrafish and nude mice tumor models. The metastatic potential of NME2-depleted cells was remarkably diminished upon selective RNA-i-mediated silencing of vinculin. Together, we demonstrate that reduced NME2 levels lead to transcriptional de-repression of vinculin and regulate lung cancer metastasis.
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Affiliation(s)
- Ram Krishna Thakur
- Proteomics and Structural Biology Unit, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India
| | - Vinod Kumar Yadav
- G.N.R. Knowledge Centre for Genome Informatics, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India
| | - Akinchan Kumar
- Proteomics and Structural Biology Unit, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India
| | - Ankita Singh
- Proteomics and Structural Biology Unit, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Krishnendu Pal
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Luke Hoeppner
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Dhurjhoti Saha
- Proteomics and Structural Biology Unit, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Gunjan Purohit
- Proteomics and Structural Biology Unit, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Richa Basundra
- Proteomics and Structural Biology Unit, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India
| | - Anirban Kar
- Proteomics and Structural Biology Unit, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India
| | - Rashi Halder
- Proteomics and Structural Biology Unit, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India
| | - Pankaj Kumar
- G.N.R. Knowledge Centre for Genome Informatics, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
| | - Aradhita Baral
- Proteomics and Structural Biology Unit, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India
| | - M J Mahesh Kumar
- Animal House, Centre For Cellular and Molecular Biology, Uppal Road, Hyderabad 500 007, India
| | - Alfonso Baldi
- Department of Biochemistry, Section of Pathology, Second University of Naples, Italy
| | | | - Laura Lorenzon
- Department of Surgery, University La Sapienza, Rome, Italy
| | - Rajkumar Banerjee
- Division of Lipid Science and Technology, Indian Institute of Chemical Technology, Hyderabad, India
| | - Praveen Kumar
- Proteomics and Structural Biology Unit, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India
| | - Viji Shridhar
- Department of Experimental Pathology, Mayo Clinic Cancer Center, Rochester, MN, USA
| | - Debabrata Mukhopadhyay
- Department of Biochemistry and Molecular Biology, Mayo Clinic College of Medicine, Rochester, MN, USA
| | - Shantanu Chowdhury
- Proteomics and Structural Biology Unit, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India G.N.R. Knowledge Centre for Genome Informatics, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India Academy of Scientific and Innovative Research (AcSIR), New Delhi, India
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18
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Aktary Z, Pasdar M. Plakoglobin represses SATB1 expression and decreases in vitro proliferation, migration and invasion. PLoS One 2013; 8:e78388. [PMID: 24260116 PMCID: PMC3832639 DOI: 10.1371/journal.pone.0078388] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Accepted: 09/18/2013] [Indexed: 01/16/2023] Open
Abstract
Plakoglobin (γ-catenin) is a homolog of β-catenin with dual adhesive and signaling functions. Plakoglobin participates in cell-cell adhesion as a component of the adherens junction and desmosomes whereas its signaling function is mediated by its interactions with various intracellular protein partners. To determine the role of plakoglobin during tumorigenesis and metastasis, we expressed plakoglobin in the human tongue squamous cell carcinoma (SCC9) cells and compared the mRNA profiles of parental SCC9 cells and their plakoglobin-expressing transfectants (SCC9-PG). We observed that the mRNA levels of SATB1, the oncogenic chromatin remodeling factor, were decreased approximately 3-fold in SCC9-PG cells compared to parental SCC9 cells. Here, we showed that plakoglobin decreased levels of SATB1 mRNA and protein in SCC9-PG cells and that plakoglobin and p53 associated with the SATB1 promoter. Plakoglobin expression also resulted in decreased SATB1 promoter activity. These results were confirmed following plakoglobin expression in the very low plakoglobin expressing and invasive mammary carcinoma cell line MDA-MB-231 cells (MDA-231-PG). In addition, knockdown of endogenous plakoglobin in the non-invasive mammary carcinoma MCF-7 cells (MCF-7-shPG) resulted in increased SATB1 mRNA and protein. Plakoglobin expression also resulted in increased mRNA and protein levels of the metastasis suppressor Nm23-H1, a SATB1 target gene. Furthermore, the levels of various SATB1 target genes involved in tumorigenesis and metastasis were altered in MCF-7-shPG cells relative to parental MCF-7 cells. Finally, plakoglobin expression resulted in decreased in vitro proliferation, migration and invasion in different carcinoma cell lines. Together with the results of our previous studies, the data suggests that plakoglobin suppresses tumorigenesis and metastasis through the regulation of genes involved in these processes.
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Affiliation(s)
- Zackie Aktary
- Department of Cell Biology, University of Alberta, Edmonton, Alberta, Canada
| | - Manijeh Pasdar
- Department of Oncology, University of Alberta, Edmonton, Alberta, Canada
- Department of Cell Biology, University of Alberta, Edmonton, Alberta, Canada
- * E-mail:
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A Study of the Wound Healing Mechanism of a Traditional Chinese Medicine, Angelica sinensis, Using a Proteomic Approach. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:467531. [PMID: 22536285 PMCID: PMC3319019 DOI: 10.1155/2012/467531] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2011] [Accepted: 01/19/2012] [Indexed: 11/18/2022]
Abstract
Angelica sinensis (AS) is a traditional Chinese herbal medicine that has been formulated clinically to treat various form of skin trauma and to help wound healing. However, the mechanism by which it works remains a mystery. In this study we have established a new platform to evaluate the pharmacological effects of total AS herbal extracts as well as its major active component, ferulic acid (FA), using proteomic and biochemical analysis. Cytotoxic and proliferation-promoting concentrations of AS ethanol extracts (AS extract) and FA were tested, and then the cell extracts were subject to 2D PAGE analysis. We found 51 differentially expressed protein spots, and these were identified by mass spectrometry. Furthermore, biomolecular assays, involving collagen secretion, migration, and ROS measurements, gave results that are consistent with the proteomic analysis. In this work, we have demonstrated a whole range of pharmacological effects associated with Angelica sinensis that might be beneficial when developing a wound healing pharmaceutical formulation for the herbal medicine.
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Kar A, Saha D, Purohit G, Singh A, Kumar P, Yadav VK, Kumar P, Thakur RK, Chowdhury S. Metastases suppressor NME2 associates with telomere ends and telomerase and reduces telomerase activity within cells. Nucleic Acids Res 2011; 40:2554-65. [PMID: 22135295 PMCID: PMC3315308 DOI: 10.1093/nar/gkr1109] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Analysis of chromatin-immunoprecipitation followed by sequencing (ChIP-seq) usually disregards sequence reads that do not map within binding positions (peaks). Using an unbiased approach, we analysed all reads, both that mapped and ones that were not included as part of peaks. ChIP-seq experiments were performed in human lung adenocarcinoma and fibrosarcoma cells for the metastasis suppressor non-metastatic 2 (NME2). Surprisingly, we identified sequence reads that uniquely represented human telomere ends in both cases. In vivo presence of NME2 at telomere ends was validated using independent methods and as further evidence we found intranuclear association of NME2 and the telomere repeat binding factor 2. Most remarkably, results demonstrate that NME2 associates with telomerase and reduces telomerase activity in vitro and in vivo, and sustained NME2 expression resulted in reduced telomere length in aggressive human cancer cells. Anti-metastatic function of NME2 has been demonstrated in human cancers, however, mechanisms are poorly understood. Together, findings reported here suggest a novel role for NME2 as a telomere binding protein that can alter telomerase function and telomere length. This presents an opportunity to investigate telomere-related interactions in metastasis suppression.
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Affiliation(s)
- Anirban Kar
- Proteomics and Structural Biology Unit, Institute of Genomics and Integrative Biology, CSIR, Mall Road, Delhi 110 007, India
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Steeg PS, Zollo M, Wieland T. A critical evaluation of biochemical activities reported for the nucleoside diphosphate kinase/Nm23/Awd family proteins: opportunities and missteps in understanding their biological functions. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2011; 384:331-9. [PMID: 21611737 PMCID: PMC10153102 DOI: 10.1007/s00210-011-0651-9] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Accepted: 04/27/2011] [Indexed: 10/18/2022]
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