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Gorbokon N, Wößner N, Lennartz M, Dwertmann Rico S, Kind S, Reiswich V, Viehweger F, Lutz F, Fraune C, Luebke AM, Hube-Magg C, Menz A, Schlichter R, Krech T, Hinsch A, Burandt E, Sauter G, Simon R, Steurer S, Marx AH, Lebok P, Dum D, Minner S, Jacobsen F, Clauditz TS, Hackert T, Uzunoǧlu FG, Bubendorf L, Bernreuther C, Kluth M. Prevalence of S-methyl-5'-thioadenosine Phosphorylase (MTAP) Deficiency in Human Cancer: A Tissue Microarray Study on 13,067 Tumors From 149 Different Tumor Types. Am J Surg Pathol 2024; 48:1245-1258. [PMID: 39132873 PMCID: PMC11404761 DOI: 10.1097/pas.0000000000002297] [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: 08/13/2024]
Abstract
Loss of S-methyl-5'-thioadenosine phosphorylase (MTAP) expression is a common event in cancer leading to a critical vulnerability of cancer cells towards anti-cancer drugs. Homozygous MTAP deletions result in a complete expression loss that can be detected by immunohistochemistry (IHC). In this study, a tissue microarray containing 17,078 samples from 149 different tumor entities was analyzed by IHC, and complete MTAP loss was validated by fluorescence in situ hybridization. MTAP loss was observed in 83 of 149 tumor categories, including neuroendocrine neoplasms (up to 80%), Hodgkin lymphoma (50.0%), mesothelioma (32.0% to 36.8%), gastro-intestinal adenocarcinoma (4.0% to 40.5%), urothelial neoplasms (10.5% to 36.7%), squamous cell carcinomas (up to 38%), and various types of sarcomas (up to 20%) and non-Hodgkin lymphomas (up to 14%). Homozygous MTAP deletion was found in 90% to 100% of cases with MTAP expression loss in most tumor categories. However, neuroendocrine tumors, Hodgkin lymphomas, and other lymphomas lacked MTAP deletions. MTAP deficiency was significantly linked to unfavorable tumor phenotype in selected tumor entities and the presence of PD-L1 expression on tumor cells, absence of PD-L1 expression on immune cells, and a low density of CD8 + lymphocytes. In summary, MTAP deficiency can occur in various tumor entities and is linked to unfavorable tumor phenotype and noninflamed tumor microenvironment, but is not always related to deletions. MTAP IHC is of considerable diagnostic value for the detection of neoplastic transformation in multiple different applications.
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Affiliation(s)
- Natalia Gorbokon
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Niklas Wößner
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Maximilian Lennartz
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Sebastian Dwertmann Rico
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Simon Kind
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Viktor Reiswich
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Florian Viehweger
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Florian Lutz
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Christoph Fraune
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Andreas M Luebke
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Claudia Hube-Magg
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Anne Menz
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Ria Schlichter
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Till Krech
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Andrea Hinsch
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Eike Burandt
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Guido Sauter
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Ronald Simon
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Stefan Steurer
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Andreas H Marx
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
- Institute of Pathology, Clinical Center Osnabrueck, Am Finkenhügel, Osnabrück, Germany
| | - Patrick Lebok
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - David Dum
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Sarah Minner
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Frank Jacobsen
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Till S Clauditz
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Thilo Hackert
- Department of Pathology, Academic Hospital Fuerth, Jakob-Henle-Straße, Fürth, Germany
| | - Faik G Uzunoǧlu
- Department of Pathology, Academic Hospital Fuerth, Jakob-Henle-Straße, Fürth, Germany
| | - Lukas Bubendorf
- Institute of Pathology, University Hospital Basel, Schönbeinstrasse, Basel, Switzerland
| | - Christian Bernreuther
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
| | - Martina Kluth
- Institute of Pathology, University Medical Center Hamburg-Eppendorf, Martinistrasse, Hamburg, Germany
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Brune MM, Savic Prince S, Vlajnic T, Chijioke O, Roma L, König D, Bubendorf L. MTAP as an emerging biomarker in thoracic malignancies. Lung Cancer 2024; 197:107963. [PMID: 39357262 DOI: 10.1016/j.lungcan.2024.107963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Revised: 09/20/2024] [Accepted: 09/22/2024] [Indexed: 10/04/2024]
Abstract
S-methyl-5'-thioadenosine phosphorylase (MTAP) deficiency is an emerging biomarker in non-small cell lung cancer (NSCLC) and beyond. The MTAP gene is located in the chromosomal region 9p21.3, which shows one of the most common homozygous deletions across all human cancers (9p21 loss). Loss of 9p21 is found in the majority of pleural mesotheliomas, where it serves as an established diagnostic marker. Until recently, fluorescence in situ hybridization (FISH) was the gold standard for the detection of 9p21 losses, but loss of MTAP expression by immunohistochemistry (IHC) gains increasing importance as an easy to apply and cost-effective diagnostic surrogate marker. Besides, MTAP loss, which has been reported in 13% of NSCLC, is becoming an emerging predictive biomarker in two different scenarios in NSCLC and other cancer types: 1) MTAP loss seems to negatively predict the response to immune checkpoint inhibitor (ICI) treatment via silencing of the tumor microenvironment, and 2) MTAP loss serves as a predictive biomarker for novel targeted treatment strategies. MTAP deficiency leads to an impaired function of the protein arginine methyltransferase 5 (PRMT5) due to its partial inhibition by MTAP's accumulating substrate methylthioadenosine (MTA). This process leaves MTAP deficient tumor cells heavily dependent on the remaining function of PRMT5, making it a perfect target for synthetic lethality. Indeed, MTA-cooperative PRMT5-inhibitors are now tested in several clinical trials with promising early results in solid malignancies. With its emergence as a predictive biomarker, the implementation of MTAP IHC into diagnostic routine for NSCLC and other tumors is likely to take place soon. In this review article, we summarize the current literature on the role of MTAP in thoracic tumors and evaluate different testing methods, including IHC, FISH and next generation sequencing.
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Affiliation(s)
- Magdalena M Brune
- Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Schönbeinstrasse 40, CH-4031 Basel, Switzerland
| | - Spasenija Savic Prince
- Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Schönbeinstrasse 40, CH-4031 Basel, Switzerland
| | - Tatjana Vlajnic
- Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Schönbeinstrasse 40, CH-4031 Basel, Switzerland
| | - Obinna Chijioke
- Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Schönbeinstrasse 40, CH-4031 Basel, Switzerland
| | - Luca Roma
- Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Schönbeinstrasse 40, CH-4031 Basel, Switzerland
| | - David König
- Division of Medical Oncology, University Hospital Basel, Basel, Petersgraben 4, CH-4031 Basel, Switzerland
| | - Lukas Bubendorf
- Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Schönbeinstrasse 40, CH-4031 Basel, Switzerland.
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Perini F, Cendron F, Lasagna E, Cassandro M, Penasa M. Genomic insights into shank and eggshell color in Italian local chickens. Poult Sci 2024; 103:103677. [PMID: 38593544 PMCID: PMC11004871 DOI: 10.1016/j.psj.2024.103677] [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: 12/20/2023] [Revised: 03/12/2024] [Accepted: 03/14/2024] [Indexed: 04/11/2024] Open
Abstract
Eggshell and shank color in poultry is an intriguing topic of research due to the roles in selection, breed recognition, and environmental adaptation. This study delves into the genomics foundations of shank and eggshell pigmentation in Italian local chickens through genome-wide association studies analysis to uncover the mechanisms governing these phenotypes. To this purpose, 483 animals from 20 local breeds (n = 466) and 2 commercial lines (n = 17) were considered and evaluated for shank and eggshell color. All animals were genotyped using the Affymetrix Axiom 600 K Chicken Genotyping Array. As regards shank color, the most interesting locus was detected on chromosome Z, close to the TYRP1 gene, known to play a key role in avian pigmentation. Additionally, several novel loci and genes associated with shank pigmentation, skin pigmentation, UV protection, and melanocyte regulation were identified (e.g., MTAP, CDKN2A, CDKN2B). In eggshell, fewer significant loci were identified, including SLC7A11 and MITF on chromosomes 4 and 12, respectively, associated with melanocyte processes and pigment synthesis. This comprehensive study shed light on the genetic architecture underlying shank and eggshell color in Italian native chicken breeds, contributing to a better understanding of this phenomenon which plays a role in breed identification and conservation, and has ecological and economic implications.
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Affiliation(s)
- Francesco Perini
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Legnaro, Padua 35020, Italy
| | - Filippo Cendron
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Legnaro, Padua 35020, Italy.
| | - Emiliano Lasagna
- Department of Agricultural, Food and Environmental Sciences, University of Perugia, Perugia 06121, Italy
| | - Martino Cassandro
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Legnaro, Padua 35020, Italy
| | - Mauro Penasa
- Department of Agronomy, Food, Natural resources, Animals and Environment, University of Padova, Legnaro, Padua 35020, Italy
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Gjuka D, Adib E, Garrison K, Chen J, Zhang Y, Li W, Boutz D, Lamb C, Tanno Y, Nassar A, El Zarif T, Kale N, Rakaee M, Mouhieddine TH, Alaiwi SA, Gusev A, Rogers T, Gao J, Georgiou G, Kwiatkowski DJ, Stone E. Enzyme-mediated depletion of methylthioadenosine restores T cell function in MTAP-deficient tumors and reverses immunotherapy resistance. Cancer Cell 2023; 41:1774-1787.e9. [PMID: 37774699 PMCID: PMC10591910 DOI: 10.1016/j.ccell.2023.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 06/20/2023] [Accepted: 09/05/2023] [Indexed: 10/01/2023]
Abstract
Chromosomal region 9p21 containing tumor suppressors CDKN2A/B and methylthioadenosine phosphorylase (MTAP) is one of the most frequent genetic deletions in cancer. 9p21 loss is correlated with reduced tumor-infiltrating lymphocytes (TILs) and resistance to immune checkpoint inhibitor (ICI) therapy. Previously thought to be caused by CDKN2A/B loss, we now show that it is loss of MTAP that leads to poor outcomes on ICI therapy and reduced TIL density. MTAP loss causes accumulation of methylthioadenosine (MTA) both intracellularly and extracellularly and profoundly impairs T cell function via the inhibition of protein arginine methyltransferase 5 (PRMT5) and by adenosine receptor agonism. Administration of MTA-depleting enzymes reverses this immunosuppressive effect, increasing TILs and drastically impairing tumor growth and importantly, synergizes well with ICI therapy. As several studies have shown ICI resistance in 9p21/MTAP null/low patients, we propose that MTA degrading therapeutics may have substantial therapeutic benefit in these patients by enhancing ICI effectiveness.
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Affiliation(s)
- Donjeta Gjuka
- Department of Chemical Engineering, University of Texas, Austin, TX, USA
| | - Elio Adib
- Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA; Lank Genitourinary Center, Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Kendra Garrison
- Department of Chemical Engineering, University of Texas, Austin, TX, USA
| | - Jianfeng Chen
- Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yuxue Zhang
- Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Wenjiao Li
- Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Daniel Boutz
- Department of Molecular Biosciences, University of Texas, Austin, TX, USA
| | - Candice Lamb
- Department of Chemical Engineering, University of Texas, Austin, TX, USA; Department of Molecular Biosciences, University of Texas, Austin, TX, USA
| | - Yuri Tanno
- Department of Chemical Engineering, University of Texas, Austin, TX, USA
| | - Amin Nassar
- Department of Internal Medicine, Yale School of Medicine, New Haven, CT, USA
| | - Talal El Zarif
- Lank Genitourinary Center, Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Neil Kale
- Worcester Polytechnic Institute, Worcester, MA, USA
| | - Mehrdad Rakaee
- Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Tarek H Mouhieddine
- Division of Hematology and Medical Oncology, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY, USA
| | - Sarah Abou Alaiwi
- Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA; Lank Genitourinary Center, Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Alexander Gusev
- Division of Population Sciences, Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA; Division of Genetics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
| | - Thomas Rogers
- Children's Medical Center Research Institute, University of Texas Southwestern, Dallas, TX, USA
| | - Jianjun Gao
- Department of Genitourinary Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - George Georgiou
- Department of Chemical Engineering, University of Texas, Austin, TX, USA; Department of Molecular Biosciences, University of Texas, Austin, TX, USA; Institute for Cellular and Molecular Biology, The University of Texas at Austin, Austin, TX, USA; Department of Oncology, University of Texas Dell Medical School, LiveSTRONG Cancer Institutes, Austin, TX, USA
| | | | - Everett Stone
- Department of Molecular Biosciences, University of Texas, Austin, TX, USA; Department of Oncology, University of Texas Dell Medical School, LiveSTRONG Cancer Institutes, Austin, TX, USA.
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Cha J, Jin D, Kim JH, Kim SC, Lim JA, Chai HH, Jung SA, Lee JH, Lee SH. Genome-wide association study revealed the genomic regions associated with skin pigmentation in an Ogye x White Leghorn F2 chicken population. Poult Sci 2023; 102:102720. [PMID: 37327746 PMCID: PMC10404675 DOI: 10.1016/j.psj.2023.102720] [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: 01/16/2023] [Revised: 04/03/2023] [Accepted: 04/10/2023] [Indexed: 06/18/2023] Open
Abstract
Skin color in chickens is an economically important trait that determines the first impression of a consumer toward a broiler and can ultimately affect consumer choice in the market. Therefore, identification of genomic regions associated with skin color is crucial for increasing the sales value of chickens. Although previous studies have attempted to reveal the genetic markers associated with the skin coloration in chickens, most were limited to investigations of candidate genes, such as melanin-related genes, and focused on case/control studies based on a single or small population. In this study, we performed a genome-wide association study (GWAS) on 770 F2 intercrosses produced by an experimental population of 2 chicken breeds, namely Ogye and White Leghorns, with different skin colors. The GWAS demonstrated that the L* value among the 3 skin color traits is highly heritable, and the genomic regions located on 2 chromosomes (20 and Z) were detected to harbor SNPs significantly associated with the skin color trait, accounting for most of the total genetic variance. Particular genomic regions spanning a ∼2.94 Mb region on GGA Z and a ∼3.58 Mb region on GGA 20 were significantly associated with skin color traits, and in these regions, certain candidate genes, including MTAP, FEM1C, GNAS, and EDN3, were found. Our findings could help elucidate the genetic mechanisms underlying chicken skin pigmentation. Furthermore, the candidate genes can be used to provide a valuable breeding strategy for the selection of specific chicken breeds with ideal skin coloration.
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Affiliation(s)
- Jihye Cha
- Animal Genome & Bioinformatics, National Institute of Animal Science, Rural Development Administration, Wanju 55365, South Korea
| | - Daehyeok Jin
- Animal Genetic Resources Research Center, National Institute of Animal Science, Rural Development Administration, Hamyang 50000, South Korea
| | - Jae-Hwan Kim
- Animal Genome & Bioinformatics, National Institute of Animal Science, Rural Development Administration, Wanju 55365, South Korea
| | - Seung-Chang Kim
- Animal Genetic Resources Research Center, National Institute of Animal Science, Rural Development Administration, Hamyang 50000, South Korea
| | - Jin A Lim
- Animal Genome & Bioinformatics, National Institute of Animal Science, Rural Development Administration, Wanju 55365, South Korea
| | - Han-Ha Chai
- Animal Genome & Bioinformatics, National Institute of Animal Science, Rural Development Administration, Wanju 55365, South Korea
| | - Seul A Jung
- Animal Genome & Bioinformatics, National Institute of Animal Science, Rural Development Administration, Wanju 55365, South Korea
| | - Jun-Heon Lee
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, South Korea
| | - Seung-Hwan Lee
- Department of Animal Science and Biotechnology, Chungnam National University, Daejeon 34134, South Korea.
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El-Khoueiry AB, Clarke J, Neff T, Crossman T, Ratia N, Rathi C, Noto P, Tarkar A, Garrido-Laguna I, Calvo E, Rodón J, Tran B, O'Dwyer PJ, Cuker A, Abdul Razak AR. Phase 1 study of GSK3368715, a type I PRMT inhibitor, in patients with advanced solid tumors. Br J Cancer 2023; 129:309-317. [PMID: 37237172 PMCID: PMC10338470 DOI: 10.1038/s41416-023-02276-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 03/28/2023] [Accepted: 04/06/2023] [Indexed: 05/28/2023] Open
Abstract
BACKGROUND GSK3368715, a first-in-class, reversible inhibitor of type I protein methyltransferases (PRMTs) demonstrated anticancer activity in preclinical studies. This Phase 1 study (NCT03666988) evaluated safety, pharmacokinetics, pharmacodynamics, and preliminary efficacy of GSK3368715 in adults with advanced-stage solid tumors. METHODS In part 1, escalating doses of oral once-daily GSK3368715 (50, 100, and 200 mg) were evaluated. Enrollment was paused at 200 mg following a higher-than-expected incidence of thromboembolic events (TEEs) among the first 19 participants, resuming under a protocol amendment starting at 100 mg. Part 2 (to evaluate preliminary efficacy) was not initiated. RESULTS Dose-limiting toxicities were reported in 3/12 (25%) patients at 200 mg. Nine of 31 (29%) patients across dose groups experienced 12 TEEs (8 grade 3 events and 1 grade 5 pulmonary embolism). Best response achieved was stable disease, occurring in 9/31 (29%) patients. Following single and repeat dosing, GSK3368715 maximum plasma concentration was reached within 1 h post dosing. Target engagement was observed in the blood, but was modest and variable in tumor biopsies at 100 mg. CONCLUSION Based on higher-than-expected incidence of TEEs, limited target engagement at lower doses, and lack of observed clinical efficacy, a risk/benefit analysis led to early study termination. TRIAL REGISTRATION NUMBER NCT03666988.
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Affiliation(s)
- Anthony B El-Khoueiry
- University of Southern California Norris Comprehensive Cancer Center, 1441 Eastlake Ave, Los Angeles, CA, USA.
| | - James Clarke
- GSK, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Tobias Neff
- GSK, 1250 S Collegeville Road, Collegeville, PA, USA
- Merck&Co, North Wales, PA, USA
| | - Tim Crossman
- GSK, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Nirav Ratia
- GSK, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, UK
| | - Chetan Rathi
- GSK, 1250 S Collegeville Road, Collegeville, PA, USA
| | - Paul Noto
- GSK, 1250 S Collegeville Road, Collegeville, PA, USA
- Adaptimmune LLC, Philadelphia, PA, USA
| | - Aarti Tarkar
- GSK, 1250 S Collegeville Road, Collegeville, PA, USA
| | | | - Emiliano Calvo
- START Madrid-CIOCC, Centro Integral Oncológico Clara Campal, Calle Oña, 10, 28050, Madrid, Spain
| | - Jordi Rodón
- Investigational Cancer Therapeutics Department, University of Texas MD Anderson Cancer Center, 1400 Holcombe Blvd Unit 455, 8th Floor, Houston, TX, USA
| | - Ben Tran
- Peter MacCallum Cancer Centre (PMCC), 305 Grattan Street, Melbourne, VIC, 3000, Australia
| | - Peter J O'Dwyer
- University of Pennsylvania, Abramson Cancer Center, 3400 Civic Center Blvd, Philadelphia, PA, USA
| | - Adam Cuker
- Perelman School of Medicine, University of Pennsylvania, 3400 Spruce St, Philadelphia, PA, USA
| | - Albiruni R Abdul Razak
- Phase 1 Program, Princess Margaret Cancer Centre, 610 University Ave, Toronto, M5G2M9, ON, Canada
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Yang M, Liu X, Tang X, Sun W, Ji Z. LC-MS based urine untargeted metabolomic analyses to identify and subdivide urothelial cancer. Front Oncol 2023; 13:1160965. [PMID: 37256175 PMCID: PMC10226587 DOI: 10.3389/fonc.2023.1160965] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 04/25/2023] [Indexed: 06/01/2023] Open
Abstract
Introduction Urine metabolomics has been a promising technique in the liquid biopsy of urothelial cancer (UC). The comparison of upper tract urothelial cancer (UTUC), lower tract urothelial cancer (BCa), and healthy controls (HCs) need to be performed to find related biomarkers. Methods In our investigation, urine samples from 35 UTUCs, 44 BCas, and 53 gender- and age-matched HCs were analyzed using liquid chromatography-high resolution mass spectrometry (LC-HRMS). In different groups, the differential metabolites and the disturbed metabolism pathways were explored. Transcriptomics and urine metabolomics are combined to identify the probably disturbed gene in BCa. Results With an area under the curve (AUC) of 0.815, the panel consisting of prostaglandin I2, 5-methyldeoxycytidine, 2,6-dimethylheptanoyl carnitine, and deoxyinosine was able to discriminate UC from HCs. With an AUC of 0.845, the validation group also demonstrated strong predictive ability. UTUC and BCa without hematuria could be distinguished using the panel of 5'-methylthioadenosine, L-beta-aspartyl-L-serine, dehydroepiandrosterone sulfate, and N'-formylkynurenine (AUC=0.858). The metabolite panel comprising aspartyl-methionine, 7-methylinosine, and alpha-CEHC glucuronide could discriminate UTUC from BCa with hematuria with an AUC of 0.83. Fatty acid biosynthesis, purine metabolism, tryptophan metabolism, pentose and glucuronate interconversions, and arachidonic acid metabolism were dysregulated when comparing UC with HCs. PTGIS and BCHE, the genes related to the metabolism of prostaglandin I2 and myristic acid respectively, were significantly associated with the survival of BCa. Discussion Not only could LC-HRMS urine metabolomic investigations distinguish UC from HCs, but they could also identify UTUC from BCa. Additionally, urine metabolomics combined with transcriptomics can find out the potential aberrant genes in the metabolism.
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Affiliation(s)
- Ming Yang
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing, China
| | - Xiaoyan Liu
- Core Facility of Instrument, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - Xiaoyue Tang
- Core Facility of Instrument, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - Wei Sun
- Core Facility of Instrument, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences/School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - Zhigang Ji
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Science, Peking Union Medical College, Beijing, China
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8
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Ge Y, Tang S, Xia T, Shi C. Research progress on the role of RNA N6-methyladenosine methylation in HCV infection. Virology 2023; 582:35-42. [PMID: 36996690 DOI: 10.1016/j.virol.2023.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 03/09/2023] [Accepted: 03/20/2023] [Indexed: 03/31/2023]
Abstract
Hepatitis C virus (HCV) is a positive-stranded RNA virus causing chronic liver diseases. The chemical modification of RNA is a research hotspot in related fields in recent years, including the methylation and acetylation of adenine, guanine, cytosine and other bases, among which methylation is the most important modification form. m6A (N6-methyladenosine), as the most abundant RNA modification form, plays an important role in HCV virus infection by modifying viral RNA and cell transcripts. This review aims to summarize the current knowledge on the roles of m6A modification in HCV infection, and discuss the research prospect.
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Bou Zerdan M, Ashok Kumar P, Haroun E, Srivastava N, Ross J, Sivapiragasam A. Genomic landscape of metastatic breast cancer (MBC) patients with methylthioadenosine phosphorylase ( MTAP) loss. Oncotarget 2023; 14:178-187. [PMID: 36913304 PMCID: PMC10010627 DOI: 10.18632/oncotarget.28376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/14/2023] Open
Abstract
INTRODUCTION Homozygous deletion of MTAP upregulates de novo synthesis of purine (DNSP) and increases the proliferation of neoplastic cells. This increases the sensitivity of breast cancer cells to DNSP inhibitors such as methotrexate, L-alanosine and pemetrexed. MATERIALS AND METHODS 7,301 cases of MBC underwent hybrid-capture based comprehensive genomic profiling (CGP). Tumor mutational burden (TMB) was determined on up to 1.1 Mb of sequenced DNA and microsatellite instability (MSI) was determined on 114 loci. Tumor cell PD-L1 expression was determined by IHC (Dako 22C3). RESULTS 208 (2.84%) of MBC featured MTAP loss. MTAP loss patients were younger (p = 0.002) and were more frequently ER- (30% vs. 50%; p < 0.0001), triple negative (TNBC) (47% vs. 27%; p < 0.0001) and less frequently HER2+ (2% vs. 8%; p = 0.0001) than MTAP intact MBC. Lobular histology and CDH1 mutations were more frequent in MTAP intact (14%) than MTAP loss MBC (p < 0.0001). CDKN2A (100%) and CDKN2B (97%) loss (9p21 co-deletion) were significantly associated with MTAP loss (p < 0.0001). Likely associated with the increased TNBC cases, BRCA1 mutation was also more frequent in MTAP loss MBC (10% vs. 4%; p < 0.0001). As for immune checkpoint inhibitors biomarkers, higher TMB >20 mut/Mb levels in the MTAP intact MBC (p < 0.0001) and higher PD-L1 low expression (1-49% TPS) in the MTAP loss MTAP (p = 0.002) were observed. CONCLUSIONS MTAP loss in MBC has distinct clinical features with genomic alterations (GA) affecting both targeted and immunotherapies. Further efforts are necessary to identify alternative means of targeting PRMT5 and MTA2 in MTAP-ve cancers to benefit from the high-MTA environment of MTAP-deficient cancers.
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Affiliation(s)
- Maroun Bou Zerdan
- Department of Internal Medicine, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Prashanth Ashok Kumar
- Department of Internal Medicine, Division of Hematology Oncology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Elio Haroun
- SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Nimisha Srivastava
- Department of Internal Medicine, Division of Hematology Oncology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Jeffrey Ross
- Foundation Medicine, Inc., Morrisville, NC 27560, USA.,Departments of Pathology and Urology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
| | - Abirami Sivapiragasam
- Department of Internal Medicine, Division of Hematology Oncology, SUNY Upstate Medical University, Syracuse, NY 13210, USA
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10
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Basin MF, Bratslavsky G, Nahhas N, Basnet A, Goldberg H, Necchi A, Sokol ES, Ramkissoon SH, Huang RSP, Ross JS, Jacob JM. Novel synthetic lethality drug target in urothelial bladder cancer based on MTAP genomic loss. Urol Oncol 2023; 41:109.e15-109.e22. [PMID: 36443178 DOI: 10.1016/j.urolonc.2022.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 09/19/2022] [Accepted: 10/03/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND When urothelial carcinoma of the bladder (UCB) presents or progresses to chemo-refractory metastatic disease, the search for new therapeutic targets is paramount. Targeting protein arginine methyltransferase 5 accumulation in tumors with methylthioadenosine phosphorylase (MTAP) genomic loss has been proposed as a new anti-tumor strategy. We evaluated the incidence of patients with MTAP loss and correlate to treatment-guiding targets and biomarkers. METHODS Two thousand six hundred eighty-three cases of advanced UCB underwent hybrid-capture based comprehensive genomic profiling using the FDA-approved F1CDx assay to evaluate all classes of genomic alterations (GA) among 324 genes. Tumor mutational burden was determined on at least 0.8 Mbp of sequenced DNA and microsatellite instability was determined on at least 95 loci. RESULTS 650 (24%) of UCB featured MTAP loss mutations (MTAP-). The gene and age distributions were similar in MTAP intact (MTAP+) and MTAP- UCB. MTAP- UCB contained higher GA/tumor frequency than MTAP+ UCB likely reflecting the frequent co-deletions of cyclin-dependent kinase inhibitor 2A/B. Of potential therapeutic targets, fibroblast growth factor receptor 3, and phosphatase and tensin homolog GA were more frequent in MTAP- UCB. In contrast, biomarkers of immunotherapy response, including higher frequencies of high tumor mutational burden and high programmed death-ligand 1 IHC staining, were observed in the MTAP+ UCB. CONCLUSIONS When compared with MTAP+ UCB, MTAP- UCB differs in genomic signatures including an increase in potentially targetable alterations but a lower frequency of immunotherapy drug biomarkers. Thus, the genomic landscape in MTAP- UCB may play a role in the design of clinical trials incorporating combination treatment strategies when targeting protein arginine methyltransferase 5 in MTAP- tumors.
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Affiliation(s)
- Michael F Basin
- Upstate Medical University Department of Urology, Syracuse, NY
| | | | - Nathan Nahhas
- Upstate Medical University Department of Urology, Syracuse, NY
| | - Alina Basnet
- Upstate Medical University Department of Medicine, Syracuse, NY
| | - Hanan Goldberg
- Upstate Medical University Department of Urology, Syracuse, NY
| | - Andrea Necchi
- Vita-Salute San Raffaele University, Department of Medical Oncology, IRCCS Ospedale San Raffaele, Milan, Italy
| | | | | | | | - Jeffrey S Ross
- Upstate Medical University Department of Urology, Syracuse, NY; Upstate Medical University Department of Medicine, Syracuse, NY; Vita-Salute San Raffaele University, Department of Medical Oncology, IRCCS Ospedale San Raffaele, Milan, Italy; Foundation Medicine, Inc, Cambridge, MA
| | - Joseph M Jacob
- Upstate Medical University Department of Urology, Syracuse, NY.
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11
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Dai L, Mugaanyi J, Cai X, Dong M, Lu C, Lu C. Comprehensive bioinformatic analysis of MMP1 in hepatocellular carcinoma and establishment of relevant prognostic model. Sci Rep 2022; 12:13639. [PMID: 35948625 PMCID: PMC9365786 DOI: 10.1038/s41598-022-17954-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 08/03/2022] [Indexed: 12/17/2022] Open
Abstract
Matrix metalloproteinase 1 (MMP1) encodes endopeptidases associated with degradation of multiple components of the extracellular matrix. This function has increasingly been considered to play a major proteolysis role in tumor invasion and metastasis. However, the relationship between MMP1 gene expression, tumor-immune microenvironment and prognosis in hepatocellular carcinoma patients remains mostly unclear. This study focused on a comprehensive analysis of MMP1 in hepatocellular carcinoma, specifically the prognosis and tumor-immune microenvironment. MMP1 expression was analyzed using TCGA database and clinical samples. MMP1 associated mechanisms, pathways, mutations and prognosis in hepatocellular carcinoma were evaluated. We also analyzed the tumor-immune microenvironment and corresponding treatments. Our research demonstrated that MMP1 expression was upregulated in patients with hepatocellular carcinoma and correlated with poor survival. A prognostic model was established and its performance evaluated. We also found and report various correlations between MMP1 and immune-related cells/genes, as well the potential therapeutic agents. These findings indicate that MMP1 can potentially be a promising prognostic biomarker and indicator of the tumor-immune microenvironment status in hepatocellular carcinoma.
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Affiliation(s)
- Lei Dai
- Department of Hepatopancreatobiliary Surgery, Ningbo Medical Centre Lihuili Hospital, Ningbo University, 1111 Jiangnan Road, Ningbo, 315040, Zhejiang, China
| | - Joseph Mugaanyi
- Department of Hepatopancreatobiliary Surgery, Ningbo Medical Centre Lihuili Hospital, Ningbo University, 1111 Jiangnan Road, Ningbo, 315040, Zhejiang, China
| | - Xingchen Cai
- Department of Hepatopancreatobiliary Surgery, Ningbo Medical Centre Lihuili Hospital, Ningbo University, 1111 Jiangnan Road, Ningbo, 315040, Zhejiang, China
| | - Mingjun Dong
- Department of Emergency, Ningbo Medical Centre Lihuili Hospital, Ningbo University, Ningbo, 315040, Zhejiang, China
| | - Caide Lu
- Department of Hepatopancreatobiliary Surgery, Ningbo Medical Centre Lihuili Hospital, Ningbo University, 1111 Jiangnan Road, Ningbo, 315040, Zhejiang, China.
| | - Changjiang Lu
- Department of Hepatopancreatobiliary Surgery, Ningbo Medical Centre Lihuili Hospital, Ningbo University, 1111 Jiangnan Road, Ningbo, 315040, Zhejiang, China.
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12
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Extracellular 5'-methylthioadenosine inhibits intracellular symmetric dimethylarginine protein methylation of FUSE-element binding proteins. J Biol Chem 2022; 298:102367. [PMID: 35963436 PMCID: PMC9467882 DOI: 10.1016/j.jbc.2022.102367] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/27/2022] [Accepted: 07/30/2022] [Indexed: 11/20/2022] Open
Abstract
Methylthioadenosine phosphorylase (MTAP) is a key enzyme in the methionine salvage pathway that converts the polyamine synthesis byproduct 5'-deoxy-5'-methylthioadenosine (MTA) into methionine. Inactivation of MTAP, often by homozygous deletion, is found in both solid and hematologic malignancies and is one of the most frequently observed genetic alterations in human cancer. Previous work established that MTAP-deleted cells accumulate MTA and contain decreased amounts of proteins with arginine residues symmetrically dimethylated (sDMA). These findings led to the hypothesis that accumulation of intracellular MTA inhibits the arginine protein methylase (PRMT5) responsible for bulk protein sDMAylation. Here, we confirm that MTAP-deleted cells have increased MTA accumulation and reduced protein sDMAylation. However, we also show that addition of extracellular MTA can cause a dramatic reduction of the steady-state levels of sDMA-containing proteins in MTAP+ cells, even though no sustained increase in intracellular MTA is found due to catabolism of MTA by MTAP. We determined that inhibition of protein sDMAylation by extracellular MTA occurs within 48 hours, is reversible, and is specific. In addition, we have identified two enhancer-binding proteins, FUBP1 and FUBP3, that are differentially sDMAylated in response to MTAP and MTA. These proteins work via the far upstream element (FUSE)-site located upstream of Myc and other promoters. Using a transcription reporter construct containing the FUSE-site, we demonstrate that MTA addition can reduce transcription, suggesting the reduction in FUBP1 and FUBP3 sDMAylation has functional consequences. Overall, our findings show that extracellular MTA can inhibit protein sDMAylation and that this inhibition can affect FUBP function.
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13
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Aoki Y, Tome Y, Han Q, Yamamoto J, Hamada K, Masaki N, Kubota Y, Bouvet M, Nishida K, Hoffman RM. Deletion of MTAP Highly Sensitizes Osteosarcoma Cells to Methionine Restriction With Recombinant Methioninase. Cancer Genomics Proteomics 2022; 19:299-304. [PMID: 35430564 DOI: 10.21873/cgp.20321] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/07/2022] [Accepted: 02/10/2022] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND/AIM Methionine addiction is a fundamental and general hallmark of cancer cells, which require exogenous methionine, despite large amounts of methionine synthesized endogenously. 5-Methylthioadenosine phosphorylase (MTAP) plays a principal role as an enzyme in the methionine-salvage pathway, which produces methionine and adenine from methylthioadenosine and is deleted in 27.5% to 37.5% of osteosarcoma patients. MATERIALS AND METHODS Human osteosarcoma cell lines U2OS, SaOS2, MNNG/HOS (HOS) and 143B, were used. The MTAP gene was knocked out in U2OS with CRISPR/Cas9. 143B and HOS have an MTAP deletion and SaOS2 is positive for MTAP. MTAP was determined by western blotting. The four cell lines were compared for sensitivity to recombinant methioninase (rMETase). RESULTS MTAP-deleted osteosarcoma cell lines MNNG/HOS and 143B were significantly more sensitive to rMETase than MTAP-positive osteosarcoma cell lines U2OS and SaOS2. In addition, MTAP knock-out U2OS cells were more sensitive to rMETase than the parental MTAP-positive U2OS cells. CONCLUSION The present results demonstrated that the absence of MTAP sensitizes osteosarcoma cells to methionine restriction by rMETase, a promising clinical strategy.
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Affiliation(s)
- Yusuke Aoki
- AntiCancer Inc, San Diego, CA, U.S.A.,Department of Surgery, University of California San Diego, La Jolla, CA, U.S.A.,Department of Orthopedic Surgery, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Yasunori Tome
- Department of Orthopedic Surgery, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | | | - Jun Yamamoto
- AntiCancer Inc, San Diego, CA, U.S.A.,Department of Surgery, University of California San Diego, La Jolla, CA, U.S.A
| | - Kazuyuki Hamada
- AntiCancer Inc, San Diego, CA, U.S.A.,Department of Surgery, University of California San Diego, La Jolla, CA, U.S.A
| | - Noriyuki Masaki
- AntiCancer Inc, San Diego, CA, U.S.A.,Department of Surgery, University of California San Diego, La Jolla, CA, U.S.A
| | - Yutaro Kubota
- AntiCancer Inc, San Diego, CA, U.S.A.,Department of Surgery, University of California San Diego, La Jolla, CA, U.S.A
| | - Michael Bouvet
- Department of Surgery, University of California San Diego, La Jolla, CA, U.S.A
| | - Kotaro Nishida
- Department of Orthopedic Surgery, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Robert M Hoffman
- AntiCancer Inc, San Diego, CA, U.S.A.; .,Department of Surgery, University of California San Diego, La Jolla, CA, U.S.A
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Zhang Y, Zhang TT, Gao L, Tan YN, Li YT, Tan XY, Huang TX, Li HH, Bai F, Zou C, Pei XH, Tan BB, Fu L. Downregulation of MTAP promotes Tumor Growth and Metastasis by regulating ODC Activity in Breast Cancer. Int J Biol Sci 2022; 18:3034-3047. [PMID: 35541910 PMCID: PMC9066107 DOI: 10.7150/ijbs.67149] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 02/16/2022] [Indexed: 11/13/2022] Open
Abstract
5'-Methylthioadenosine phosphorylase (MTAP) is a key enzyme in the methionine salvage pathway and has been reported to suppress tumorigenesis. The MTAP gene is located at 9p21, a chromosome region often deleted in breast cancer (BC). However, the clinical and biological significance of MTAP in BC is still unclear. Here, we reported that MTAP was frequently downregulated in 41% (35/85) of primary BCs and 89% (8/9) of BC cell lines. Low expression of MTAP was significantly correlated with a poor survival of BC patients (P=0.0334). Functional studies showed that MTAP was able to suppress both in vitro and in vivo tumorigenic ability of BC cells, including migration, invasion, angiogenesis, tumor growth and metastasis in nude mice with orthotopic xenograft tumor of BC. Mechanistically, we found that downregulation of MTAP could increase the polyamine levels by activating ornithine decarboxylase (ODC). By treating the MTAP-repressing BC cells with specific ODC inhibitor Difluoromethylornithine (DFMO) or treating the MTAP-overexpressing BC cells with additional putrescine, metastasis-promoting or -suppressing phenotype of these MTAP-manipulated cells was significantly reversed, respectively. Taken together, our data suggested that MTAP has a critical metastasis-suppressive role by tightly regulating ODC activity in BC cells, which may serve as a prominent novel therapeutic target for advanced breast cancer treatment.
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Affiliation(s)
- Ying Zhang
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Health Science Center, Shenzhen 518060, Guangdong, China
| | - Tian-Tian Zhang
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Health Science Center, Shenzhen 518060, Guangdong, China
| | - Lin Gao
- Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong, China
| | - Ya-Nan Tan
- Department of Clinical Oncology, The University of Hong Kong-Shenzhen Hospital, Shenzhen 518053, China
| | - Yu-Ting Li
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Health Science Center, Shenzhen 518060, Guangdong, China
| | - Xiang-Yu Tan
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Health Science Center, Shenzhen 518060, Guangdong, China
| | - Tu-Xiong Huang
- Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong, China
| | - Hua-Hui Li
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Health Science Center, Shenzhen 518060, Guangdong, China
| | - Feng Bai
- Department of Pathology, Shenzhen University Health Science Center, Shenzhen 518060, Guangdong, China
| | - Chang Zou
- Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University; The First Affiliated Hospital, Southern University of Science and Technology), Shenzhen 518020, Guangdong, China
| | - Xin-Hai Pei
- Department of Anatomy and Histology, Shenzhen University Health Science Center, Shenzhen 518060, Guangdong, China
| | - Bin-Bin Tan
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Health Science Center, Shenzhen 518060, Guangdong, China
| | - Li Fu
- Guangdong Provincial Key Laboratory of Regional Immunity and Diseases, Department of Pharmacology and International Cancer Center, Shenzhen University Health Science Center, Shenzhen 518060, Guangdong, China
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15
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Zong L, Cheng G, Zhao J, Zhuang X, Zheng Z, Liu Z, Song F. Inhibitory Effect of Ursolic Acid on the Migration and Invasion of Doxorubicin-Resistant Breast Cancer. Molecules 2022; 27:1282. [PMID: 35209071 PMCID: PMC8879026 DOI: 10.3390/molecules27041282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 01/29/2022] [Accepted: 02/11/2022] [Indexed: 12/11/2022] Open
Abstract
The cause of death in most breast cancer patients is disease metastasis and the occurrence of multidrug resistance (MDR). Ornithine decarboxylase (ODC), which is involved into multiple pathways, is closely related to carcinogenesis and development. Ursolic acid (UA), a natural triterpenoid compound, has been shown to reverse the MDR characteristics of tumor cells. However, the effect of UA on the invasion and metastasis of tumor cells with MDR is not known. Therefore, we investigated the effects of UA on invasion and metastasis, ODC-related polyamine metabolism, and MAPK-Erk-VEGF/MMP-9 signaling pathways in a doxorubicin-resistant breast cancer cell (MCF-7/ADR) model. The obtained results showed that UA significantly inhibited the adhesion and migration of MCF-7/ADR cells, and had higher affinities with key active cavity residues of ODC compared to the known inhibitor di-fluoro-methyl-ornithine (DFMO). UA could downregulate ODC, phosphorylated Erk (P-Erk), VEGF, and matrix metalloproteinase-9 (MMP-9) activity. Meanwhile, UA significantly reduced the content of metabolites of the polyamine metabolism. Furthermore, UA increased the intracellular accumulation of Dox in MCF-7/ADR cells. Taken together, UA can inhibit against tumor progression during the treatment of breast cancer with Dox, and possibly modulate the Erk-VEGF/MMP-9 signaling pathways and polyamine metabolism by targeting ODC to exert these effects.
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Affiliation(s)
- Li Zong
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; (L.Z.); (G.C.); (J.Z.); (Z.Z.); (Z.L.)
- Jilin Province Key Laboratory of Chinese Medicine Chemistry and Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Guorong Cheng
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; (L.Z.); (G.C.); (J.Z.); (Z.Z.); (Z.L.)
- Jilin Province Key Laboratory of Chinese Medicine Chemistry and Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Jingwu Zhao
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; (L.Z.); (G.C.); (J.Z.); (Z.Z.); (Z.L.)
- Jilin Province Key Laboratory of Chinese Medicine Chemistry and Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Xiaoyu Zhuang
- Experiment Center for Science and Technology, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Zhong Zheng
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; (L.Z.); (G.C.); (J.Z.); (Z.Z.); (Z.L.)
- Jilin Province Key Laboratory of Chinese Medicine Chemistry and Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Zhiqiang Liu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; (L.Z.); (G.C.); (J.Z.); (Z.Z.); (Z.L.)
- Jilin Province Key Laboratory of Chinese Medicine Chemistry and Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Fengrui Song
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China; (L.Z.); (G.C.); (J.Z.); (Z.Z.); (Z.L.)
- Jilin Province Key Laboratory of Chinese Medicine Chemistry and Mass Spectrometry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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Terra S, Roden AC, Yi ES, Aubry MC, Boland JM. Loss of Methylthioadenosine Phosphorylase by Immunohistochemistry Is Common in Pulmonary Sarcomatoid Carcinoma and Sarcomatoid Mesothelioma. Am J Clin Pathol 2022; 157:33-39. [PMID: 34463336 DOI: 10.1093/ajcp/aqab091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/26/2021] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES Differentiating malignant pleural mesothelioma from benign reactive mesothelial processes can be quite challenging. Ancillary tests such as BRCA1-associated protein 1 (BAP1) immunohistochemistry and p16 fluorescence in situ hybridization (FISH) are helpful tools to aid in this distinction. Immunohistochemistry for methylthioadenosine phosphorylase (MTAP) has recently been proposed as an effective surrogate marker for p16 FISH and is an attractive alternative test due to shorter turnaround time. There are little data regarding the specificity of MTAP loss for mesothelioma or whether it may be useful to distinguish mesothelioma from the most common entity in the differential diagnosis, sarcomatoid carcinoma. METHODS We studied well-characterized cases of sarcomatoid carcinoma (n = 34) and sarcomatoid mesothelioma (n = 62), which were stained for MTAP (clone 2G4) and BAP1 (clone C-4). RESULTS Loss of MTAP expression was observed in 17 (50%) of 34 pulmonary sarcomatoid carcinomas; BAP1 expression was retained in all of the cases in which it was performed (n = 31). MTAP expression was lost in 38 (61%) of 62 sarcomatoid mesotheliomas; BAP1 was lost in 6 (10%) of 62. In the six cases with BAP1 loss, five also had loss of MTAP, while MTAP expression was retained in one. CONCLUSIONS Loss of MTAP expression by immunohistochemistry is common in pulmonary sarcomatoid carcinoma, as it is present in half of cases. This rate is similar to what is observed in sarcomatoid mesothelioma (61%). Therefore, this stain is not useful to distinguish between these two malignancies. MTAP loss is more common than BAP1 loss in the setting of sarcomatoid mesothelioma (61% vs 10%, respectively).
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Affiliation(s)
- Simone Terra
- Division of Anatomic Pathology, Mayo Clinic, Rochester, MN, USA
| | - Anja C Roden
- Division of Anatomic Pathology, Mayo Clinic, Rochester, MN, USA
| | - Eunhee S Yi
- Division of Anatomic Pathology, Mayo Clinic, Rochester, MN, USA
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Cersosimo F, Barbarino M, Lonardi S, Vermi W, Giordano A, Bellan C, Giurisato E. Mesothelioma Malignancy and the Microenvironment: Molecular Mechanisms. Cancers (Basel) 2021; 13:cancers13225664. [PMID: 34830817 PMCID: PMC8616064 DOI: 10.3390/cancers13225664] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 11/05/2021] [Accepted: 11/08/2021] [Indexed: 12/13/2022] Open
Abstract
Several studies have reported that cellular and soluble components of the tumor microenvironment (TME) play a key role in cancer-initiation and progression. Considering the relevance and the complexity of TME in cancer biology, recent research has focused on the investigation of the TME content, in terms of players and informational exchange. Understanding the crosstalk between tumor and non-tumor cells is crucial to design more beneficial anti-cancer therapeutic strategies. Malignant pleural mesothelioma (MPM) is a complex and heterogenous tumor mainly caused by asbestos exposure with few treatment options and low life expectancy after standard therapy. MPM leukocyte infiltration is rich in macrophages. Given the failure of macrophages to eliminate asbestos fibers, these immune cells accumulate in pleural cavity leading to the establishment of a unique inflammatory environment and to the malignant transformation of mesothelial cells. In this inflammatory landscape, stromal and immune cells play a driven role to support tumor development and progression via a bidirectional communication with tumor cells. Characterization of the MPM microenvironment (MPM-ME) may be useful to understand the complexity of mesothelioma biology, such as to identify new molecular druggable targets, with the aim to improve the outcome of the disease. In this review, we summarize the known evidence about the MPM-ME network, including its prognostic and therapeutic relevance.
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Affiliation(s)
- Francesca Cersosimo
- Department of Biotechnology Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy;
| | - Marcella Barbarino
- Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy; (M.B.); (A.G.); (C.B.)
- Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA
| | - Silvia Lonardi
- Department of Molecular and Translational Medicine, University of Brescia, 25100 Brescia, Italy; (S.L.); (W.V.)
| | - William Vermi
- Department of Molecular and Translational Medicine, University of Brescia, 25100 Brescia, Italy; (S.L.); (W.V.)
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO 63130, USA
| | - Antonio Giordano
- Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy; (M.B.); (A.G.); (C.B.)
- Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple University, Philadelphia, PA 19122, USA
| | - Cristiana Bellan
- Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy; (M.B.); (A.G.); (C.B.)
| | - Emanuele Giurisato
- Department of Biotechnology Chemistry and Pharmacy, University of Siena, 53100 Siena, Italy;
- Division of Cancer Sciences, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PL, UK
- Correspondence: ; Tel.: +39-057-723-2125
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PRMT5: An Emerging Target for Pancreatic Adenocarcinoma. Cancers (Basel) 2021; 13:cancers13205136. [PMID: 34680285 PMCID: PMC8534199 DOI: 10.3390/cancers13205136] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 10/11/2021] [Accepted: 10/12/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary The burden of pancreatic ductal adenocarcinoma (PDAC) increases with rising incidence, yet 5-year overall survival remains poor at 17%. Routine comprehensive genomic profiling of PDAC only finds 2.5% of patients who may benefit and receive matched targeted therapy. Protein arginine methyltransferase 5 (PRMT5) as an anti-cancer target has gained significant interest in recent years and high levels of PRMT5 protein are associated with worse survival outcomes across multiple cancer types. Inhibition of PRMT5 in pre-clinical models can lead to cancer growth inhibition. However, PRMT5 is involved in multiple cellular processes, thus determining its mechanism of action is challenging. While past reviews on PRMT5 have focused on its role in diverse cellular processes and past research studies have focused mainly on haematological malignancies and glioblastoma, this review provides an overview of the possible biological mechanisms of action of PRMT5 inhibition and its potential as a treatment in pancreatic cancer. Abstract The overall survival of pancreatic ductal adenocarcinoma (PDAC) remains poor and its incidence is rising. Targetable mutations in PDAC are rare, thus novel therapeutic approaches are needed. Protein arginine methyltransferase 5 (PRMT5) overexpression is associated with worse survival and inhibition of PRMT5 results in decreased cancer growth across multiple cancers, including PDAC. Emerging evidence also suggests that altered RNA processing is a driver in PDAC tumorigenesis and creates a partial dependency on this process. PRMT5 inhibition induces altered splicing and this vulnerability can be exploited as a novel therapeutic approach. Three possible biological pathways underpinning the action of PRMT5 inhibitors are discussed; c-Myc regulation appears central to its action in the PDAC setting. Whilst homozygous MTAP deletion and symmetrical dimethylation levels are associated with increased sensitivity to PRMT5 inhibition, neither measure robustly predicts its growth inhibitory response. The immunomodulatory effect of PRMT5 inhibitors on the tumour microenvironment will also be discussed, based on emerging evidence that PDAC stroma has a significant bearing on disease behaviour and response to therapy. Lastly, with the above caveats in mind, current knowledge gaps and the implications and rationales for PRMT5 inhibitor development in PDAC will be explored.
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Yuan G, Yang S, Yang S. Macrophage RGS12 contributes to osteoarthritis pathogenesis through enhancing the ubiquitination. Genes Dis 2021; 9:1357-1367. [PMID: 35873013 PMCID: PMC9293709 DOI: 10.1016/j.gendis.2021.08.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 07/26/2021] [Accepted: 08/18/2021] [Indexed: 02/08/2023] Open
Abstract
Ubiquitination has important functions in osteoarthritis (OA), yet the mechanism remains unclear. Here, we identify the regulator of G protein signaling 12 (RGS12) in macrophages, which promotes the association between ubiquitin and IκB during inflammation. We also find that RGS12 promotes the degradation of IκB through enhancing the ubiquitination whereas the process can be inhibited by MG132. Moreover, the increased ubiquitination further inhibits the expression of MTAP, which can indirectly activate the phosphorylation of IκB. Finally, due to the degradation of IκB, the NF-κB translocates into the nucleus and further promotes the gene expression of cytokines such as IL1β, IL6, and TNFα during inflammation. Importantly, RGS12 deficiency prevents ubiquitination and inflammation in surgically or chemically induced OA. We conclude that the lack of RGS12 in macrophages interferes with the ubiquitination and degradation of IκB, thereby preventing inflammation and cartilage damage. Our results provide evidence for the relevance of RGS12 in promoting inflammation and regulating immune signaling.
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20
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Barekatain Y, Ackroyd JJ, Yan VC, Khadka S, Wang L, Chen KC, Poral AH, Tran T, Georgiou DK, Arthur K, Lin YH, Satani N, Ballato ES, Behr EI, deCarvalho AC, Verhaak RGW, de Groot J, Huse JT, Asara JM, Kalluri R, Muller FL. Homozygous MTAP deletion in primary human glioblastoma is not associated with elevation of methylthioadenosine. Nat Commun 2021; 12:4228. [PMID: 34244484 PMCID: PMC8270912 DOI: 10.1038/s41467-021-24240-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 06/04/2021] [Indexed: 02/07/2023] Open
Abstract
Homozygous deletion of methylthioadenosine phosphorylase (MTAP) in cancers such as glioblastoma represents a potentially targetable vulnerability. Homozygous MTAP-deleted cell lines in culture show elevation of MTAP’s substrate metabolite, methylthioadenosine (MTA). High levels of MTA inhibit protein arginine methyltransferase 5 (PRMT5), which sensitizes MTAP-deleted cells to PRMT5 and methionine adenosyltransferase 2A (MAT2A) inhibition. While this concept has been extensively corroborated in vitro, the clinical relevance relies on exhibiting significant MTA accumulation in human glioblastoma. In this work, using comprehensive metabolomic profiling, we show that MTA secreted by MTAP-deleted cells in vitro results in high levels of extracellular MTA. We further demonstrate that homozygous MTAP-deleted primary glioblastoma tumors do not significantly accumulate MTA in vivo due to metabolism of MTA by MTAP-expressing stroma. These findings highlight metabolic discrepancies between in vitro models and primary human tumors that must be considered when developing strategies for precision therapies targeting glioblastoma with homozygous MTAP deletion. The metabolite methylthioadenosine (MTA) inhibits PRMT5. Therefore, MTA accumulation due to MTA phosphorylase (MTAP) deletion has been proposed as a vulnerability for PRMT5-targeted therapy in cancer. Here, the authors show that MTA does not accumulate in MTAP-deficient cancer cells but is secreted and metabolized by MTAP-intact cells in the tumour microenvironment.
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Affiliation(s)
- Yasaman Barekatain
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA. .,Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA. .,MD Anderson UT Health Graduate School of Biomedical Sciences, Houston, TX, USA.
| | - Jeffrey J Ackroyd
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,MD Anderson UT Health Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Victoria C Yan
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,MD Anderson UT Health Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Sunada Khadka
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,MD Anderson UT Health Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Lin Wang
- Department of Chemistry and Lewis-Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ, USA
| | - Ko-Chien Chen
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,MD Anderson UT Health Graduate School of Biomedical Sciences, Houston, TX, USA
| | - Anton H Poral
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Theresa Tran
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Dimitra K Georgiou
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Kenisha Arthur
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Yu-Hsi Lin
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Nikunj Satani
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Elliot S Ballato
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Eliot I Behr
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ana C deCarvalho
- Department of Neurosurgery, Henry Ford Hospital, Detroit, MI, USA
| | - Roel G W Verhaak
- The Jackson Laboratory for Genomic Medicine, Farmington, CT, USA
| | - John de Groot
- Department of Neuro-Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jason T Huse
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - John M Asara
- Department of Medicine, Harvard Medical School, and Division of Signal Transduction, Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Raghu Kalluri
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Florian L Muller
- Department of Cancer Systems Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA. .,SPOROS Bioventures, Houston, TX, USA.
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Zarisfi M, Nguyen T, Nedrow JR, Le A. The Heterogeneity Metabolism of Renal Cell Carcinomas. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1311:117-126. [PMID: 34014538 DOI: 10.1007/978-3-030-65768-0_8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
According to data from the American Cancer Society, cancer is one of the deadliest health problems globally. Annually, renal cell carcinoma (RCC) causes more than 100,000 deaths worldwide [1-4], posing an urgent need to develop effective treatments to increase patient survival outcomes. New therapies are expected to address a major factor contributing to cancer's resistance to standard therapies: oncogenic heterogeneity. Gene expression can vary tremendously among different types of cancers, different patients of the same tumor type, and even within individual tumors; various metabolic phenotypes can emerge, making singletherapy approaches insufficient. Novel strategies targeting the diverse metabolism of cancers aim to overcome this obstacle. Though some have yielded positive results, it remains a challenge to uncover all of the distinct metabolic profiles of RCC. In the quest to overcome this obstacle, the metabolic oriented research focusing on these cancers has offered freshly new perspectives, which are expected to contribute heavily to the development of new treatments.
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Affiliation(s)
- Mohammadreza Zarisfi
- Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Tu Nguyen
- University of California, Los Angeles (UCLA) David Geffen School of Medicine, Los Angeles, CA, USA
| | - Jessie R Nedrow
- Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Anne Le
- Department of Pathology and Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
- Department of Chemical and Biomolecular Engineering, Johns Hopkins University Whiting School of Engineering, Baltimore, MD, USA.
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Loss of 5'-Methylthioadenosine Phosphorylase (MTAP) is Frequent in High-Grade Gliomas; Nevertheless, it is Not Associated with Higher Tumor Aggressiveness. Cells 2020; 9:cells9020492. [PMID: 32093414 PMCID: PMC7072758 DOI: 10.3390/cells9020492] [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: 12/27/2019] [Revised: 02/04/2020] [Accepted: 02/10/2020] [Indexed: 12/12/2022] Open
Abstract
The 5’-methylthioadenosine phosphorylase (MTAP) gene is located in the chromosomal region 9p21. MTAP deletion is a frequent event in a wide variety of human cancers; however, its biological role in tumorigenesis remains unclear. The purpose of this study was to characterize the MTAP expression profile in a series of gliomas and to associate it with patients’ clinicopathological features. Moreover, we sought to evaluate, through glioma gene-edited cell lines, the biological impact of MTAP in gliomas. MTAP expression was evaluated in 507 glioma patients by immunohistochemistry (IHC), and the expression levels were associated with patients’ clinicopathological features. Furthermore, an in silico study was undertaken using genomic databases totalizing 350 samples. In glioma cell lines, MTAP was edited, and following MTAP overexpression and knockout (KO), a transcriptome analysis was performed by NanoString Pan-Cancer Pathways panel. Moreover, MTAP’s role in glioma cell proliferation, migration, and invasion was evaluated. Homozygous deletion of 9p21 locus was associated with a reduction of MTAP mRNA expression in the TCGA (The Cancer Genome Atlas) - glioblastoma dataset (p < 0.01). In addition, the loss of MTAP expression was markedly high in high-grade gliomas (46.6% of cases) determined by IHC and Western blotting (40% of evaluated cell lines). Reduced MTAP expression was associated with a better prognostic in the adult glioblastoma dataset (p < 0.001). Nine genes associated with five pathways were differentially expressed in MTAP-knockout (KO) cells, with six upregulated and three downregulated in MTAP. Analysis of cell proliferation, migration, and invasion did not show any significant differences between MTAP gene-edited and control cells. Our results integrating data from patients as well as in silico and in vitro models provide evidence towards the lack of strong biological importance of MTAP in gliomas. Despite the frequent loss of MTAP, it seems not to have a clinical impact in survival and does not act as a canonic tumor suppressor gene in gliomas.
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23
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Strobl CD, Schaffer S, Haug T, Völkl S, Peter K, Singer K, Böttcher M, Mougiakakos D, Mackensen A, Aigner M. Selective PRMT5 Inhibitors Suppress Human CD8+ T Cells by Upregulation of p53 and Impairment of the AKT Pathway Similar to the Tumor Metabolite MTA. Mol Cancer Ther 2019; 19:409-419. [DOI: 10.1158/1535-7163.mct-19-0189] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 09/04/2019] [Accepted: 10/29/2019] [Indexed: 11/16/2022]
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24
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Li Y, Wang Y, Wu P. 5'-Methylthioadenosine and Cancer: old molecules, new understanding. J Cancer 2019; 10:927-936. [PMID: 30854099 PMCID: PMC6400808 DOI: 10.7150/jca.27160] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 12/17/2018] [Indexed: 12/19/2022] Open
Abstract
While the metabolic changes in cancer tissues were first observed by Warburg Otto almost a century ago, altered metabolism has recently returned as a focus of cancer research. 5'-Methylthioadenosine (MTA) is a naturally occurring sulfur-containing nucleoside found in numerous species. While MTA was first isolated several decades ago, a lack of sensitive and specific analytical methodologies designed for its direct quantification has hampered the study of its physiological and pathophysiological features. Many studies indicate that MTA suppresses tumors by inhibiting tumor cell proliferation, invasion, and the induction of apoptosis while controlling the inflammatory micro-environments of tumor tissue. In this review, we assessed the effects of MTA and of related materials on the growth and functions of normal and malignant cells.
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Affiliation(s)
- Yaofeng Li
- Department of Pathophysiology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Yubo Wang
- College of Pharmacy, Hubei University of Chinese Medicine, Wuhan 430065, China
| | - Ping Wu
- Department of Pathophysiology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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25
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Targeting the insulin-like growth factor-1 receptor in MTAP-deficient renal cell carcinoma. Signal Transduct Target Ther 2019; 4:2. [PMID: 30701095 PMCID: PMC6345872 DOI: 10.1038/s41392-019-0035-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Revised: 12/20/2018] [Accepted: 01/06/2019] [Indexed: 02/06/2023] Open
Abstract
Renal cell carcinoma (RCC) has emerged as a metabolic disease characterized by dysregulated expression of metabolic enzymes. Patients with metastatic RCC have an unusually poor prognosis and near-universal resistance to all current therapies. To improve RCC treatment and the survival rate of patients with RCC, there is an urgent need to reveal the mechanisms by which metabolic reprogramming regulates aberrant signaling and oncogenic progression. Through an integrated analysis of RCC metabolic pathways, we showed that methylthioadenosine phosphorylase (MTAP) and its substrate methylthioadenosine (MTA) are dysregulated in aggressive RCC. A decrease in MTAP expression was observed in RCC tissues and correlated with higher tumor grade and shorter overall survival. Genetic manipulation of MTAP demonstrated that MTAP expression inhibits the epithelial-mesenchymal transition, invasion and migration of RCC cells. Interestingly, we found a decrease in the protein methylation level with a concomitant increase in tyrosine phosphorylation after MTAP knockout. A phospho-kinase array screen identified the type 1 insulin-like growth factor-1 receptor (IGF1R) as the candidate with the highest upregulation in tyrosine phosphorylation in response to MTAP loss. We further demonstrated that IGF1R phosphorylation acts upstream of Src and STAT3 signaling in MTAP-knockout RCC cells. IGF1R suppression by a selective inhibitor of IGF1R, linsitinib, impaired the cell migration and invasion capability of MTAP-deleted cells. Surprisingly, an increase in linsitinib-mediated cytotoxicity occurred in RCC cells with MTAP deficiency. Our data suggest that IGF1R signaling is a driver pathway that contributes to the aggressive nature of MTAP-deleted RCC. A receptor that is triggered by an enzyme deficiency in kidney cancer could act as an anticancer drug target. Ching-Hsien Chen of the University of California Davis and colleagues in the USA and Taiwan found that renal cell carcinomas are deficient in the enzyme methylthioadenosine phosphorylase (MTAP). This deficiency, which correlates with higher tumour grade and shorter overall survival, leads to the activation of type 1 insulin-like growth factor-1 receptor (IGF1R). This in turn activates signaling pathways that support cancer cell survival, growth, and invasiveness. The team found that a selective IGF1R inhibitor, called linsitinib, suppressed colony-forming ability and reduced cell motility in renal carcinoma cells. The findings suggest that IGF1R signaling drives pathways that contribute to the aggressive nature of renal carcinoma cells lacking MTAP.
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26
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Effects of glaucocalyxin A on human liver cancer cells as revealed by GC/MS- and LC/MS-based metabolic profiling. Anal Bioanal Chem 2018; 410:3325-3335. [DOI: 10.1007/s00216-018-0996-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 02/17/2018] [Accepted: 03/05/2018] [Indexed: 11/26/2022]
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27
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Palanichamy K, Chakravarti A. Diagnostic and Prognostic Significance of Methionine Uptake and Methionine Positron Emission Tomography Imaging in Gliomas. Front Oncol 2017; 7:257. [PMID: 29164057 PMCID: PMC5672012 DOI: 10.3389/fonc.2017.00257] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Accepted: 10/13/2017] [Indexed: 12/15/2022] Open
Abstract
The present most common image diagnostic tracer in clinical practice for glioma is 18F-fluorodeoxyglucose (FDG) positron emission tomography (PET) for brain tumors diagnosis and prognosis. PET is a promising molecular imaging technique, which provides real-time information on the metabolic behavior of the tracer. The diffusive nature of glioblastoma (GBM) and heterogeneity often make the radiographic detection by FDG-PET inaccurate, and there is no gold standard. FDG-PET often leads to several controversies in making clinical decisions due to their uptake by normal surrounding tissues, and pose a challenge in delineating treatment-induced necrosis, edema, inflammation, and pseudoprogression. Thus, it is imperative to find new criteria independent of conventional morphological diagnosis to demarcate normal and tumor tissues. We have provided proof of concept studies for 11C methionine-PET (MET-PET) imaging of gliomas, along with prognostic and diagnostic significance. MET-PET is not widely used in the United States, though clinical trials from Japan and Germany suggesting the diagnostic ability of MET-PET imaging are superior to FDG-PET imaging for brain tumors. A major impediment is the availability of the onsite cyclotron and isotopic carbon chemistry facilities. In this article, we have provided the scientific rationale and advantages of the use of MET-PET as GBM tracers. We extend our discussion on the expected pitfalls of using MET-PET and ways to overcome them by incorporating a translational component of profiling gene status in the methionine metabolic pathway. This translational correlative component to the MET-PET clinical trials can lead to a better understanding of the existing controversies and can enhance our knowledge for future randomization of GBM patients based on their tumor gene signatures to achieve better prognosis and treatment outcome.
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Affiliation(s)
- Kamalakannan Palanichamy
- Department of Radiation Oncology, The Ohio State University College of Medicine and Comprehensive Cancer Center, Columbus, OH, United States
| | - Arnab Chakravarti
- Department of Radiation Oncology, The Ohio State University College of Medicine and Comprehensive Cancer Center, Columbus, OH, United States
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Daghir-Wojtkowiak E, Wiczling P, Waszczuk-Jankowska M, Kaliszan R, Markuszewski MJ. Multilevel pharmacokinetics-driven modeling of metabolomics data. Metabolomics 2017; 13:31. [PMID: 28255294 PMCID: PMC5306155 DOI: 10.1007/s11306-017-1164-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 01/12/2017] [Indexed: 10/28/2022]
Abstract
INTRODUCTION Multilevel modeling is a quantitative statistical method to investigate variability and relationships between variables of interest, taking into account population structure and dependencies. It can be used for prediction, data reduction and causal inference from experiments and observational studies allowing for more efficient elucidation of knowledge. OBJECTIVES In this study we introduced the concept of multilevel pharmacokinetics (PK)-driven modelling for large-sample, unbalanced and unadjusted metabolomics data comprising nucleoside and creatinine concentration measurements in urine of healthy and cancer patients. METHODS A Bayesian multilevel model was proposed to describe the nucleoside and creatinine concentration ratio considering age, sex and health status as covariates. The predictive performance of the proposed model was summarized via area under the ROC, sensitivity and specificity using external validation. RESULTS Cancer was associated with an increase in methylthioadenosine/creatinine excretion rate by a factor of 1.42 (1.09-2.03) which constituted the highest increase among all nucleosides. Age influenced nucleosides/creatinine excretion rates for all nucleosides in the same direction which was likely caused by a decrease in creatinine clearance with age. There was a small evidence of sex-related differences for methylthioadenosine. The individual a posteriori prediction of patient classification as area under the ROC with 5th and 95th percentile was 0.57(0.5-0.67) with sensitivity and specificity of 0.59(0.42-0.76) and 0.57(0.45-0.7), respectively suggesting limited usefulness of 13 nucleosides/creatinine urine concentration measurements in predicting disease in this population. CONCLUSION Bayesian multilevel pharmacokinetics-driven modeling in metabolomics may be useful in understanding the data and may constitute a new tool for searching towards potential candidates of disease indicators.
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Affiliation(s)
- Emilia Daghir-Wojtkowiak
- 0000 0001 0531 3426grid.11451.30Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Al. Gen. Hallera 107, 80-416 Gdańsk, Poland
| | - Paweł Wiczling
- 0000 0001 0531 3426grid.11451.30Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Al. Gen. Hallera 107, 80-416 Gdańsk, Poland
| | - Małgorzata Waszczuk-Jankowska
- 0000 0001 0531 3426grid.11451.30Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Al. Gen. Hallera 107, 80-416 Gdańsk, Poland
| | - Roman Kaliszan
- 0000 0001 0531 3426grid.11451.30Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Al. Gen. Hallera 107, 80-416 Gdańsk, Poland
| | - Michał Jan Markuszewski
- 0000 0001 0531 3426grid.11451.30Department of Biopharmaceutics and Pharmacodynamics, Medical University of Gdańsk, Al. Gen. Hallera 107, 80-416 Gdańsk, Poland
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Limm K, Dettmer K, Reinders J, Oefner PJ, Bosserhoff AK. Characterization of the Methylthioadenosine Phosphorylase Polymorphism rs7023954 - Incidence and Effects on Enzymatic Function in Malignant Melanoma. PLoS One 2016; 11:e0160348. [PMID: 27479139 PMCID: PMC4968798 DOI: 10.1371/journal.pone.0160348] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 07/18/2016] [Indexed: 02/07/2023] Open
Abstract
Deficiency of methylthioadenosine phosphorylase (MTAP) supports melanoma development and progression through accumulation of its substrate 5’-methylthioadenosine (MTA), which leads amongst others to a constitutive inhibition of protein arginine methyltransferases (PRMTs) and activation of the transcription factor AP-1 via the receptor ADORA2B. Genetic association studies have also suggested that genetic polymorphism in MTAP may modulate the risk of melanoma. Here, we investigated the only globally common non-synonymous single nucleotide polymorphism (SNP) reported to date for MTAP. The SNP rs7023954 is located in exon 3 (c.166G>A), and leads to the conservative substitution of one branched-chain amino acid residue (valine) for another (isoleucine) at position 56 (p.Val56Ile). Whereas genotype frequencies in normal and primary melanoma tissues or cell lines were in Hardy-Weinberg equilibrium based on cDNA amplicon sequencing, a marked (P = 0.00019) deviation was observed in metastatic melanoma tissues and cell lines due to a deficit of heterozygotes. Enzyme assays conducted on the co-dominantly expressed alleles revealed no difference in the conversion rate of MTA to adenine and 5-methylthioribose-1-phosphate, indicating that this known enzymatic activity does not modulate the tumor suppressive function of MTAP.
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Affiliation(s)
- Katharina Limm
- Institute of Biochemistry, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
| | - Katja Dettmer
- Institute of Functional Genomics, University of Regensburg, Regensburg, Germany
| | - Jörg Reinders
- Institute of Functional Genomics, University of Regensburg, Regensburg, Germany
| | - Peter J. Oefner
- Institute of Functional Genomics, University of Regensburg, Regensburg, Germany
| | - Anja-Katrin Bosserhoff
- Institute of Biochemistry, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
- Comprehensive Cancer Center Erlangen, CCC Erlangen-EMN, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, Germany
- * E-mail:
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30
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Henrich FC, Singer K, Poller K, Bernhardt L, Strobl CD, Limm K, Ritter AP, Gottfried E, Völkl S, Jacobs B, Peter K, Mougiakakos D, Dettmer K, Oefner PJ, Bosserhoff AK, Kreutz MP, Aigner M, Mackensen A. Suppressive effects of tumor cell-derived 5'-deoxy-5'-methylthioadenosine on human T cells. Oncoimmunology 2016; 5:e1184802. [PMID: 27622058 DOI: 10.1080/2162402x.2016.1184802] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Revised: 04/13/2016] [Accepted: 04/26/2016] [Indexed: 02/01/2023] Open
Abstract
The immunosuppressive tumor microenvironment represents one of the main obstacles for immunotherapy of cancer. The tumor milieu is among others shaped by tumor metabolites such as 5'-deoxy-5'-methylthioadenosine (MTA). Increased intratumoral MTA levels result from a lack of the MTA-catabolizing enzyme methylthioadenosine phosphorylase (MTAP) in tumor cells and are found in various tumor entities. Here, we demonstrate that MTA suppresses proliferation, activation, differentiation, and effector function of antigen-specific T cells without eliciting cell death. Conversely, if MTA is added to highly activated T cells, MTA exerts cytotoxic effects on T cells. We identified the Akt pathway, a critical signal pathway for T cell activation, as a target of MTA, while, for example, p38 remained unaffected. Next, we provide evidence that MTA exerts its immunosuppressive effects by interfering with protein methylation in T cells. To confirm the relevance of the suppressive effects of exogenously added MTA on human T cells, we used an MTAP-deficient tumor cell-line that was stably transfected with the MTAP-coding sequence. We observed that T cells stimulated with MTAP-transfected tumor cells revealed a higher proliferative capacity compared to T cells stimulated with Mock-transfected cells. In conclusion, our findings reveal a novel immune evasion strategy of human tumor cells that could be of interest for therapeutic targeting.
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Affiliation(s)
- Frederik C Henrich
- Department of Internal Medicine 5 - Hematology and Oncology, University Hospital of Erlangen , Erlangen, Germany
| | - Katrin Singer
- Department of Internal Medicine 5 - Hematology and Oncology, University Hospital of Erlangen, Erlangen, Germany; Department of Internal Medicine 3 - Hematology and Oncology, University Hospital of Regensburg, Regensburg, Germany
| | - Kerstin Poller
- Department of Internal Medicine 5 - Hematology and Oncology, University Hospital of Erlangen , Erlangen, Germany
| | - Luise Bernhardt
- Department of Internal Medicine 5 - Hematology and Oncology, University Hospital of Erlangen , Erlangen, Germany
| | - Carolin D Strobl
- Department of Internal Medicine 5 - Hematology and Oncology, University Hospital of Erlangen , Erlangen, Germany
| | - Katharina Limm
- Institute of Biochemistry - Emil-Fischer-Zentrum, Friedrich-Alexander University of Erlangen-Nuremberg , Erlangen, Germany
| | - Axel P Ritter
- Institute of Functional Genomics, University of Regensburg , Regensburg, Germany
| | - Eva Gottfried
- Department of Internal Medicine 3 - Hematology and Oncology, University Hospital of Regensburg , Regensburg, Germany
| | - Simon Völkl
- Department of Internal Medicine 5 - Hematology and Oncology, University Hospital of Erlangen , Erlangen, Germany
| | - Benedikt Jacobs
- Department of Internal Medicine 5 - Hematology and Oncology, University Hospital of Erlangen, Erlangen, Germany; Department of Cancer Immunology, Institute for Cancer Research, Oslo University Hospital, Radiumhospital, Oslo, Norway; The KG Jebsen Center for Cancer Immunotherapy, Institute of Clinical Medicine, University of Oslo, Oslo, Norway
| | - Katrin Peter
- Department of Internal Medicine 3 - Hematology and Oncology, University Hospital of Regensburg , Regensburg, Germany
| | - Dimitrios Mougiakakos
- Department of Internal Medicine 5 - Hematology and Oncology, University Hospital of Erlangen , Erlangen, Germany
| | - Katja Dettmer
- Institute of Functional Genomics, University of Regensburg , Regensburg, Germany
| | - Peter J Oefner
- Institute of Functional Genomics, University of Regensburg , Regensburg, Germany
| | - Anja-Katrin Bosserhoff
- Institute of Biochemistry - Emil-Fischer-Zentrum, Friedrich-Alexander University of Erlangen-Nuremberg , Erlangen, Germany
| | - Marina P Kreutz
- Department of Internal Medicine 3 - Hematology and Oncology, University Hospital of Regensburg , Regensburg, Germany
| | - Michael Aigner
- Department of Internal Medicine 5 - Hematology and Oncology, University Hospital of Erlangen , Erlangen, Germany
| | - Andreas Mackensen
- Department of Internal Medicine 5 - Hematology and Oncology, University Hospital of Erlangen , Erlangen, Germany
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Bigaud E, Corrales FJ. Methylthioadenosine (MTA) Regulates Liver Cells Proteome and Methylproteome: Implications in Liver Biology and Disease. Mol Cell Proteomics 2016; 15:1498-510. [PMID: 26819315 DOI: 10.1074/mcp.m115.055772] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Indexed: 12/21/2022] Open
Abstract
Methylthioadenosine phosphorylase (MTAP), a key enzyme in the adenine and methionine salvage pathways, catalyzes the hydrolysis of methylthioadenosine (MTA), a compound suggested to affect pivotal cellular processes in part through the regulation of protein methylation. MTAP is expressed in a wide range of cell types and tissues, and its deletion is common to cancer cells and in liver injury. The aim of this study was to investigate the proteome and methyl proteome alterations triggered by MTAP deficiency in liver cells to define novel regulatory mechanisms that may explain the pathogenic processes of liver diseases. iTRAQ analysis resulted in the identification of 216 differential proteins (p < 0.05) that suggest deregulation of cellular pathways as those mediated by ERK or NFκB. R-methyl proteome analysis led to the identification of 74 differentially methylated proteins between SK-Hep1 and SK-Hep1+ cells, including 116 new methylation sites. Restoring normal MTA levels in SK-Hep1+ cells parallels the specific methylation of 56 proteins, including KRT8, TGF, and CTF8A, which provides a novel regulatory mechanism of their activity with potential implications in carcinogenesis. Inhibition of RNA-binding proteins methylation is especially relevant upon accumulation of MTA. As an example, methylation of quaking protein in Arg(242) and Arg(256) in SK-Hep1+ cells may play a pivotal role in the regulation of its activity as indicated by the up-regulation of its target protein p27(kip1) The phenotype associated with a MTAP deficiency was further verified in the liver of MTAP± mice. Our data support that MTAP deficiency leads to MTA accumulation and deregulation of central cellular pathways, increasing proliferation and decreasing the susceptibility to chemotherapeutic drugs, which involves differential protein methylation. Data are available via ProteomeXchange with identifier PXD002957 (http://www.ebi.ac.uk/pride/archive/projects/PXD002957).
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Affiliation(s)
- Emilie Bigaud
- From the §Department of Hepatology, Proteomics Laboratory, CIMA, University of Navarra; CIBERehd; IDISNA, Pamplona, 31008 Spain
| | - Fernando J Corrales
- From the §Department of Hepatology, Proteomics Laboratory, CIMA, University of Navarra; CIBERehd; IDISNA, Pamplona, 31008 Spain
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32
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de Oliveira SFV, Ganzinelli M, Chilà R, Serino L, Maciel ME, Urban CDA, de Lima RS, Cavalli IJ, Generali D, Broggini M, Damia G, Ribeiro EMDSF. Characterization of MTAP Gene Expression in Breast Cancer Patients and Cell Lines. PLoS One 2016; 11:e0145647. [PMID: 26751376 PMCID: PMC4709099 DOI: 10.1371/journal.pone.0145647] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 12/07/2015] [Indexed: 01/02/2023] Open
Abstract
MTAP is a ubiquitously expressed gene important for adenine and methionine salvage. The gene is located at 9p21, a chromosome region often deleted in breast carcinomas, similar to CDKN2A, a recognized tumor suppressor gene. Several research groups have shown that MTAP acts as a tumor suppressor, and some therapeutic approaches were proposed based on a tumors´ MTAP status. We analyzed MTAP and CDKN2A gene (RT-qPCR) and protein (western-blotting) expression in seven breast cancer cell lines and evaluated their promoter methylation patterns to better characterize the contribution of these genes to breast cancer. Cytotoxicity assays with inhibitors of de novo adenine synthesis (5-FU, AZA and MTX) after MTAP gene knockdown showed an increased sensitivity, mainly to 5-FU. MTAP expression was also evaluated in two groups of samples from breast cancer patients, fresh tumors and paired normal breast tissue, and from formalin-fixed paraffin embedded (FFPE) core breast cancer samples diagnosed as Luminal-A tumors and triple negative breast tumors (TNBC). The difference of MTAP expression between fresh tumors and normal tissues was not statistically significant. However, MTAP expression was significantly higher in Luminal-A breast tumors than in TNBC, suggesting the lack of expression in more aggressive breast tumors and the possibility of using the new approaches based on MTAP status in TNBC.
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MESH Headings
- Adenocarcinoma, Mucinous/drug therapy
- Adenocarcinoma, Mucinous/genetics
- Adenocarcinoma, Mucinous/metabolism
- Adenocarcinoma, Mucinous/pathology
- Antineoplastic Agents/pharmacology
- Azacitidine/pharmacology
- Carcinoma, Ductal, Breast/drug therapy
- Carcinoma, Ductal, Breast/genetics
- Carcinoma, Ductal, Breast/metabolism
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Lobular/drug therapy
- Carcinoma, Lobular/genetics
- Carcinoma, Lobular/metabolism
- Carcinoma, Lobular/pathology
- Cell Line, Tumor
- Cyclin-Dependent Kinase Inhibitor p16/genetics
- Cyclin-Dependent Kinase Inhibitor p16/metabolism
- DNA Methylation
- Estrogen Receptor alpha/deficiency
- Estrogen Receptor alpha/genetics
- Female
- Fluorouracil/pharmacology
- Gene Expression Regulation, Neoplastic
- Humans
- Lymphatic Metastasis
- Methotrexate/pharmacology
- Organ Specificity
- Promoter Regions, Genetic
- Purine-Nucleoside Phosphorylase/antagonists & inhibitors
- Purine-Nucleoside Phosphorylase/genetics
- Purine-Nucleoside Phosphorylase/metabolism
- RNA, Small Interfering/genetics
- RNA, Small Interfering/metabolism
- Receptor, ErbB-2/deficiency
- Receptor, ErbB-2/genetics
- Receptors, Progesterone/deficiency
- Receptors, Progesterone/genetics
- Signal Transduction
- Triple Negative Breast Neoplasms/drug therapy
- Triple Negative Breast Neoplasms/genetics
- Triple Negative Breast Neoplasms/metabolism
- Triple Negative Breast Neoplasms/pathology
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Affiliation(s)
| | - Monica Ganzinelli
- Laboratory of Molecular Pharmacology, Department of Oncology, Istituto di Ricerche Farmacologiche ‘‘Mario Negri”, Milan, Lombardia, Italy
| | - Rosaria Chilà
- Laboratory of Molecular Pharmacology, Department of Oncology, Istituto di Ricerche Farmacologiche ‘‘Mario Negri”, Milan, Lombardia, Italy
| | - Leandro Serino
- Department of Genetics, Federal University of Paraná, Curitiba, Paraná, Brazil
| | | | - Cícero de Andrade Urban
- Department of Mastology, Breast Unit, Hospital Nossa Senhora das Graças, Curitiba, Paraná, Brazil
| | - Rubens Silveira de Lima
- Department of Mastology, Breast Unit, Hospital Nossa Senhora das Graças, Curitiba, Paraná, Brazil
| | | | - Daniele Generali
- Laboratorio di Oncologia Molecolare Senologica, U. O. Multidisciplinare di Patologia Mammaria, A. O. Istituti Ospitalieri di Cremona, Cremona, Lombardia, Italy
| | - Massimo Broggini
- Laboratory of Molecular Pharmacology, Department of Oncology, Istituto di Ricerche Farmacologiche ‘‘Mario Negri”, Milan, Lombardia, Italy
| | - Giovanna Damia
- Laboratory of Molecular Pharmacology, Department of Oncology, Istituto di Ricerche Farmacologiche ‘‘Mario Negri”, Milan, Lombardia, Italy
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He HL, Lee YE, Shiue YL, Lee SW, Chen TJ, Li CF. Characterization and Prognostic Significance of Methylthioadenosine Phosphorylase Deficiency in Nasopharyngeal Carcinoma. Medicine (Baltimore) 2015; 94:e2271. [PMID: 26656376 PMCID: PMC5008521 DOI: 10.1097/md.0000000000002271] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Identification of cancer-associated genes by genomic profiling contributes to the elucidation of tumor development and progression. The methylthioadenosine phosphorylase (MTAP) gene, located at chromosome 9p21, plays a critical role in tumorigenicity and disease progression in a wide variety of cancers. However, the prognostic impact of MTAP in patients with nasopharyngeal carcinoma (NPC) remains obscured. Through data mining from published transcriptomic database, MTAP was first identified as a differentially downregulated gene in NPC. In this study, our aim was to evaluate the expression of MTAP in NPC and to clarify its prognostic significance.MTAP immunohistochemistry was retrospectively performed and analyzed in biopsy specimens from 124 NPC patients who received standard treatment without distant metastasis at initial diagnosis. The immunoexpression status was correlated with the clinicopathological variables, disease-specific survival (DSS), distant metastasis-free survival (DMFS), and local recurrence-free survival (LRFS). Real-time quantitative polymerase chain reaction (PCR) was used to measure MTAP gene dosage. In some cases, we also performed methylation-specific PCR and pyrosequencing to assess the status of promoter methylation.MTAP deficiency was significantly associated with advanced tumor stages (P = 0.023) and univariately predictive of adverse outcomes for DSS, DMFS, and LRFS. In the multivariate comparison, MTAP deficiency still remained prognostically independent to portend worse DSS (P = 0.021, hazard ratio = 1.870) and DMFS (P = 0.009, hazard ratio = 2.154), together with advanced AJCC stages III to IV. Homozygous deletion or promoter methylation of MTAP gene were identified to be significantly associated with MTAP protein deficiency (P < 0.001).MTAP deficiency was correlated with an aggressive phenotype and independently predictive of worse DSS and DMFS, suggesting its role in disease progression and as an independent prognostic biomarker of NPC, which potentially offers new strategy of targeted treatment for patients lacking MTAP expression.
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Affiliation(s)
- Hong-Lin He
- From the Department of Pathology, E-DA Hospital, I-Shou University, Kaohsiung, Taiwan (H-LH); Institute of Biomedical Science, National Sun Yat-Sen University, Kaohsiung, Taiwan (H-LH, Y-LS); Department of Anesthesiology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan (Y-EL); Department of Radiation Oncology, Chi-Mei Medical Center, Liouying, Tainan, Taiwan (S-WL); Department of Pathology, Chi-Mei Medical Center, Tainan, Taiwan (T-JC, C-FL); National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan (C-FL); Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, Taiwan (C-FL); and Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan (C-FL)
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Li CF, Fang FM, Kung HJ, Chen LT, Wang JW, Tsai JW, Yu SC, Wang YH, Li SH, Huang HY. Downregulated MTAP expression in myxofibrosarcoma: A characterization of inactivating mechanisms, tumor suppressive function, and therapeutic relevance. Oncotarget 2015; 5:11428-41. [PMID: 25426549 PMCID: PMC4294342 DOI: 10.18632/oncotarget.2552] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Accepted: 10/01/2014] [Indexed: 12/22/2022] Open
Abstract
Myxofibrosarcomas are genetically complex and involve recurrently deleted chromosome 9p, for which we characterized the pathogenically relevant target(s) using genomic profiling. In 12 of the 15 samples, we detected complete or partial losses of 9p. The only aggressiveness-associated, differentially lost region was 9p21.3, spanning the potential inactivated methylthioadenosine phosphorylase (MTAP) that exhibited homozygous (4/15) or hemizygous (3/15) deletions. In independent samples, MTAP gene status was assessed using quantitative- and methylation-specific PCR assays, and immunoexpression was evaluated. We applied MTAP reexpression or knockdown to elucidate the functional roles of MTAP and the therapeutic potential of L-alanosine in MTAP-preserved and MTAP-deficient myxofibrosarcoma cell lines and xenografts. MTAP protein deficiency (37%) was associated with MTAP gene inactivation (P < 0.001) by homozygous deletion or promoter methylation, and independently portended unfavorable metastasis-free survival (P = 0.0318) and disease-specific survival (P = 0.014). Among the MTAP-deficient cases, the homozygous deletion of MTAP predicted adverse outcome. In MTAP-deficient cells, MTAP reexpression inhibited cell migration and invasion, proliferation, and anchorage-independent colony formation and downregulated cyclin D1. This approach also attenuated the tube-forming abilities of human umbilical venous endothelial cells, attributable to the transcriptional repression of MMP-9, and abrogated the susceptibility to L-alanosine. The inhibiting effects of MTAP expression on tumor growth, angiogenesis, and the induction of apoptosis by L-alanosine were validated using MTAP-reexpressing xenografts and reverted using RNA interference in MTAP-preserved cells. In conclusion, homozygous deletion primarily accounts for the adverse prognostic impact of MTAP deficiency and confers the biological aggressiveness and susceptibility to L-alanosine in myxofibrosarcomas.
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Affiliation(s)
- Chien-Feng Li
- Department of Pathology, Chi-Mei Medical Center, Tainan, Taiwan. Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, Taiwan. National Institute of Cancer Research National Health Research Institutes, Tainan, Taiwan. Institute of Clinical Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Fu-Min Fang
- Departments of Radiation Oncology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hsing-Jien Kung
- Institute of Molecular and Genomic Medicine, National Health Research Institutes, Tainan, Taiwan
| | - Li-Tzong Chen
- National Institute of Cancer Research National Health Research Institutes, Tainan, Taiwan. Department of Internal Medicine and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Jun-Wen Wang
- Orthopedic Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Jen-Wei Tsai
- Department of Anatomic Pathology, E-Da Hospital, Kaohsiung, Tawian
| | - Shih Chen Yu
- Department of Pathology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yu-Hui Wang
- Institute of Biosignal Transduction, National Cheng Kung University, Tainan, Taiwan
| | - Shau-Hsuan Li
- Department of Internal Medicine, Division of Oncology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hsuan-Ying Huang
- Department of Pathology, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
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35
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Shao Y, Zhu B, Zheng R, Zhao X, Yin P, Lu X, Jiao B, Xu G, Yao Z. Development of urinary pseudotargeted LC-MS-based metabolomics method and its application in hepatocellular carcinoma biomarker discovery. J Proteome Res 2014; 14:906-16. [PMID: 25483141 DOI: 10.1021/pr500973d] [Citation(s) in RCA: 94] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hepatocellular carcinoma (HCC) is one of the pestilent malignancies leading to cancer-related death. Discovering effective biomarkers for HCC diagnosis is an urgent demand. To identify potential metabolite biomarkers, we developed a urinary pseudotargeted method based on liquid chromatography-hybrid triple quadrupole linear ion trap mass spectrometry (LC-QTRAP MS). Compared with nontargeted method, the pseudotargeted method can achieve better data quality, which benefits differential metabolites discovery. The established method was applied to cirrhosis (CIR) and HCC investigation. It was found that urinary nucleosides, bile acids, citric acid, and several amino acids were significantly changed in liver disease groups compared with the controls, featuring the dysregulation of purine metabolism, energy metabolism, and amino metabolism in liver diseases. Furthermore, some metabolites such as cyclic adenosine monophosphate, glutamine, and short- and medium-chain acylcarnitines were the differential metabolites of HCC and CIR. On the basis of binary logistic regression, butyrylcarnitine (carnitine C4:0) and hydantoin-5-propionic acid were defined as combinational markers to distinguish HCC from CIR. The area under curve was 0.786 and 0.773 for discovery stage and validation stage samples, respectively. These data show that the established pseudotargeted method is a complementary one of targeted and nontargeted methods for metabolomics study.
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Affiliation(s)
- Yaping Shao
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences , 457 Zhongshan Road, Dalian 116023, China
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36
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Expression of MTAP inhibits tumor-related phenotypes in HT1080 cells via a mechanism unrelated to its enzymatic function. G3-GENES GENOMES GENETICS 2014; 5:35-44. [PMID: 25387827 PMCID: PMC4291467 DOI: 10.1534/g3.114.014555] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Methylthioadenosine Phosphorylase (MTAP) is a tumor suppressor gene that is frequently deleted in human cancers and encodes an enzyme responsible for the catabolism of the polyamine byproduct 5′deoxy-5′-methylthioadenosine (MTA). To elucidate the mechanism by which MTAP inhibits tumor formation, we have reintroduced MTAP into MTAP-deleted HT1080 fibrosarcoma cells. Expression of MTAP resulted in a variety of phenotypes, including decreased colony formation in soft-agar, decreased migration, decreased in vitro invasion, increased matrix metalloproteinase production, and reduced ability to form tumors in severe combined immunodeficiency mice. Microarray analysis showed that MTAP affected the expression of genes involved in a variety of processes, including cell adhesion, extracellular matrix interaction, and cell signaling. Treatment of MTAP-expressing cells with a potent inhibitor of MTAP’s enzymatic activity (MT-DADMe-ImmA) did not result in a MTAP− phenotype. This finding suggests that MTAP’s tumor suppressor function is not the same as its known enzymatic function. To confirm this, we introduced a catalytically inactive version of MTAP, D220A, into HT1080 cells and found that this mutant was fully capable of reversing the soft agar colony formation, migration, and matrix metalloproteinase phenotypes. Our results show that MTAP affects cellular phenotypes in HT1080 cells in a manner that is independent of its known enzymatic activity.
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Bauer R, Valletta D, Bauer K, Thasler WE, Hartmann A, Müller M, Reichert TE, Hellerbrand C. Downregulation of P-cadherin expression in hepatocellular carcinoma induces tumorigenicity. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2014; 7:6125-6132. [PMID: 25337260 PMCID: PMC4203231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/07/2014] [Accepted: 08/20/2014] [Indexed: 06/04/2023]
Abstract
P-cadherin is a major contributor to cell-cell adhesion in epithelial tissues, playing pivotal roles in important morphogenetic and differentiation processes and in maintaining tissue integrity and homeostasis. Alterations of P-cadherin expression have been observed during the progression of several carcinomas where it appears to act as tumor suppressive or oncogenic in a context-dependent manner. Here, we found a significant downregulation of P-cadherin in hepatocellular carcinoma (HCC) cell lines and tissues compared to primary human hepatocytes and non-malignant liver tissues. Combined immunohistochemical analysis of a tissue microarray containing matched pairs of HCC tissue and corresponding non-tumorous liver tissue of 69 patients confirmed reduced P-cadherin expression in more than half of the cases. In 35 human HCC tissues, the P-cadherin immunosignal was completely lost which correlated with tumor staging and proliferation. Also in vitro, P-cadherin suppression in HCC cells via siRNA induced proliferation compared to cells transfected with control-siRNA. In summary, downregulation of P-cadherin expression appears to induce tumorigenicity in HCC. Therefore, P-cadherin expression may serve as a prognostic marker and therapeutic target of this highly aggressive tumor.
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Affiliation(s)
- Richard Bauer
- Department of Oral and Maxillofacial Surgery, University Hospital RegensburgGermany
| | - Daniela Valletta
- Department of Internal Medicine I, University Hospital RegensburgGermany
| | - Karin Bauer
- Department of Oral and Maxillofacial Surgery, University Hospital RegensburgGermany
| | - Wolfgang E Thasler
- Tissue Bank O.B. HTCR and Center for Liver Cell Research, Department of General, Visceral, Transplantation, Vascular and Thoracic Surgery, Grosshadern Hospital, Ludwig-Maximilians-University, MunichGermany;
| | - Arndt Hartmann
- Institute of Pathology, University Erlangen-NurembergGermany
| | - Martina Müller
- Department of Internal Medicine I, University Hospital RegensburgGermany
| | - Torsten E Reichert
- Department of Oral and Maxillofacial Surgery, University Hospital RegensburgGermany
| | - Claus Hellerbrand
- Department of Internal Medicine I, University Hospital RegensburgGermany
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MTAP is an independent prognosis marker and the concordant loss of MTAP and p16 expression predicts short survival in non-small cell lung cancer patients. Eur J Surg Oncol 2014; 40:1143-50. [PMID: 24969958 DOI: 10.1016/j.ejso.2014.04.017] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Revised: 04/24/2014] [Accepted: 04/24/2014] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES Methylthioadenosine phosphorylase (MTAP), a ubiquitously expressed protein, plays important roles in purine biosynthesis. Locating near to each other on chromosome 9p21-22, codeletion of the MTAP and p16(Ink4A) genes have been reported in non-small cell lung cancer (NSCLC). The aim of this study is to determine the respective prognostic value of MTAP and p16 by considering their correlation in NSCLC patients. MATERIALS AND METHODS We analyzed MTAP and p16 protein expression by immunohistochemical staining on 99 NSCLC tissue microarray samples. The association between MTAP and p16 expression levels and prognosis were analyzed using the Kaplan-Meier method and Cox proportional hazards model for prognosis. RESULTS Patients with a low MTAP expression level had poor overall survival (P = 0.010) and disease-free survival (P = 0.002). Low p16 expression indicated a trend toward poor overall survival (P = 0.138) and disease-free survival (P = 0.199). There was a significant positive correlation between MTAP and p16 expression levels (Spearman's ρ = 0.402, P < 0.001). By multivariate analyses, the MTAP expression level retained its independent prognostic power and p16 expression loss of the correlation with prognosis. Concordant loss of MTAP and p16 expression was observed in 24 out of 99 patients (24.2%). Patients with concordant loss of MTAP and p16 expression had the worst prognosis compared to patients with high expression of both markers. CONCLUSION MTAP expression is an independent prognostic factor and has greater prognostic significance than p16 expression in NSCLC. Concordant loss of MTAP and p16 expression indicates poor outcomes in lung cancer patients.
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Valletta D, Czech B, Spruss T, Ikenberg K, Wild P, Hartmann A, Weiss TS, Oefner PJ, Müller M, Bosserhoff AK, Hellerbrand C. Regulation and function of the atypical cadherin FAT1 in hepatocellular carcinoma. Carcinogenesis 2014; 35:1407-15. [DOI: 10.1093/carcin/bgu054] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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40
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Expression and function of methylthioadenosine phosphorylase in chronic liver disease. PLoS One 2013; 8:e80703. [PMID: 24324622 PMCID: PMC3855635 DOI: 10.1371/journal.pone.0080703] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Accepted: 10/07/2013] [Indexed: 12/21/2022] Open
Abstract
To study expression and function of methylthioadenosine phosphorylase (MTAP), the rate-limiting enzyme in the methionine and adenine salvage pathway, in chronic liver disease.
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Lv X, Zhang Y, Rao S, Su D, Feng D, Wang M, Li X, Li D, Guo H, Zuo X, Xia M, Ouyang H, Ling W, Qiu J. Association between rs10118757(A/G) in methylthioadenosine phosphorylase gene and coronary artery disease in Chinese Hans. Gene 2013; 526:344-6. [PMID: 23462334 DOI: 10.1016/j.gene.2013.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2012] [Revised: 12/28/2012] [Accepted: 02/07/2013] [Indexed: 10/27/2022]
Abstract
Studies focusing on the association of gene methylthioadenosine phosphorylase (MTAP) with the risk of coronary artery disease (CAD) and myocardial infarction (MI) are limited. In this study, we explored the effects of rs10118757 in MTAP gene on CAD and MI by performing association analysis in a Chinese Han population. rs10118757 was genotyped in 1007 CAD patients (including 338 MI patients) and 885 healthy controls. Allelic analysis showed that allele A of rs10118757 was associated with increased risk of CAD, with OR (95%CI)=1.193 (1.035-1.376), and P=0.015. After adjusted for age, BMI, gender, hypertension and smoking, rs10118757 was still significantly associated with CAD under additive and dominant models, with OR (95%CI)=1.252 (1.070-1.465), P=0.005, and OR (95%CI)=1.698 (1.168-2.467), P=0.006, respectively. Compared to additive model, dominant model may be the best-fitting model (P=6.63E-10 vs P=6.70E-10). As reported previously, rs10118757 was not associated with MI in the current study. Our study firstly reported that SNP rs10118757 was associated with CAD risk in a Chinese Han population, indicating that MTAP gene may play a potential role in the pathophysiological process of CAD.
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Affiliation(s)
- Xiaofei Lv
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University (Northern Campus), 74 Zhongshan Road 2, Guangzhou, 510080, China.
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42
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Methionine salvage and S-adenosylmethionine: essential links between sulfur, ethylene and polyamine biosynthesis. Biochem J 2013; 451:145-54. [PMID: 23535167 DOI: 10.1042/bj20121744] [Citation(s) in RCA: 216] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Both Met (methionine) and SAM (S-adenosylmethionine), the activated form of Met, participate in a number of essential metabolic pathways in plants. The subcellular compartmentalization of Met fluxes will be discussed in the present review with respect to regulation and communication with the sulfur assimilation pathway, the network of the aspartate-derived amino acids and the demand for production of SAM. SAM enters the ethylene, nicotianamine and polyamine biosynthetic pathways and provides the methyl group for the majority of methylation reactions required for plant growth and development. The multiple essential roles of SAM require regulation of its synthesis, recycling and distribution to sustain these different pathways. A particular focus of the present review will be on the function of recently identified genes of the Met salvage cycle or Yang cycle and the importance of the Met salvage cycle in the metabolism of MTA (5'-methylthioadenosine). MTA has the potential for product inhibition of ethylene, nicotianamine and polyamine biosynthesis which provides an additional link between these pathways. Interestingly, regulation of Met cycle genes was found to differ between plant species as shown for Arabidopsis thaliana and Oryza sativa.
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Bertino JR, Lubin M, Johnson-Farley N, Chan WC, Goodell L, Bhagavathi S. Lack of expression of MTAP in uncommon T-cell lymphomas. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2013; 12:306-9. [PMID: 23040436 DOI: 10.1016/j.clml.2012.07.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 06/19/2012] [Accepted: 07/26/2012] [Indexed: 10/27/2022]
Abstract
UNLABELLED The majority of peripheral T-cell lymphomas were found to lack methylthioadenosine phosphorylase, an enzyme that is essential for the salvage of adenine from methylthioadenosine, a product of polyamine synthesis. Importantly, tumors that lack this enzyme have been shown to be more sensitive to inhibitors of de novo purine synthesis (6-thioguanine, methotrexate). BACKGROUND T-cell lymphomas, in particular peripheral T-cell lymphoma (PTCL), angioimmunoblastic T-cell lymphoma (AITL), and anaplastic large cell lymphoma (ALCL), have only limited and noncurative treatment options. PATIENTS AND METHODS We report here that a high percentage of PTCL, AITL, and ALCL lack the enzyme methylthioadenosine phosphorylase (MTAP), as do T-cell leukemia and T-cell lymphoblastic leukemia. MTAP-deficient cells cannot cleave endogenous methylthioadenosine to adenine and 5-methylthioribose-1-phosphate, a precursor of methionine, and as a result have enhanced sensitivity to inhibitors of de novo purine biosynthesis. A recently introduced antifolate, pralatrexate, which has been shown to inhibit de novo purine biosynthesis, has been approved for treatment of PTCL and may have an increasing role in therapy. An alternative strategy involving coadministration of methylthioadenosine and high-dose 6-thioguanine has been proposed and may prove to be selectively toxic to MTAP-deficient uncommon lymphomas. CONCLUSION Thus the consequences of MTAP deficiency suggest that new therapeutic interventions for T-cell lymphoma may be feasible.
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Affiliation(s)
- Joseph R Bertino
- Department of Medicine, Robert Wood Johnson Medical School, University of Medicine and Dentistry of New Jersey, New Brunswick, NJ 18901, USA.
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Limm K, Ott C, Wallner S, Mueller DW, Oefner P, Hellerbrand C, Bosserhoff AK. Deregulation of protein methylation in melanoma. Eur J Cancer 2013; 49:1305-13. [DOI: 10.1016/j.ejca.2012.11.026] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Revised: 09/24/2012] [Accepted: 11/14/2012] [Indexed: 12/16/2022]
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Diagnostic value of DNA alteration: loss of heterozygosity or allelic imbalance-promising for molecular staging of prostate cancers. Med Oncol 2013; 30:391. [PMID: 23288724 PMCID: PMC3586396 DOI: 10.1007/s12032-012-0391-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2012] [Accepted: 11/21/2012] [Indexed: 01/12/2023]
Abstract
The biological behavior of prostate cancer is uncertain, and therefore, search for molecular prognostic markers associated with disease progression seems to be essential. We performed microsatellite allelotyping of DNA isolated from primary prostate tumors biopsies (prostate adenocarcinoma, PCa). We evaluated the frequency of allelic imbalance (AI), including loss of heterozygosity and/or microsatellite imbalance (LOH/MSI) as well as the association of these DNA alterations with clinicopathological variables. We assessed the significance of LOH/MSI alterations in selected imprinted and non-imprinted chromosomal regions (IR and NIR) in PCa. A total of 50 biopsies of prostate tumor (containing >75 % tumor cells) were histologically examined confirming prostate carcinoma. Microsatellite allelotyping using 16 microsatellite markers linked to the following chromosomal regions: 1p31.2, 3p21.3–25.3, 7q32.2, 9p21.3, 11p15.5, 12q23.2, and 16q22.1 was performed. The incidence of LOH/MSI alterations in prostate tumor cells was the highest for chromosomal regions 7q32.2 and 16q22.1 (31.25 and 26.60 %, respectively), followed by 1p31.2 and 3p21.3–25.3 (26.50 and 17.40 %, respectively). Statistically significant increase in LOH/MSI alterations has been observed for markers: D1S2137 (1p region; p = 0.00032), D9S974 (9p region; p = 0.0017), and D16S3025 (16q region; p = 0.0017). Statistically significant differences in frequency of LOH/MSI alterations in particular chromosomal regions have been found for 1p31.2, 7q32.2 and 16q22.1 (p = 0.027, p = 0.012 and p = 0.031, respectively). We documented statistically significant association between Fractional Allele Loss (FAL) index and advanced tumor stage (p < 0.05). We suggest that genomic instability of LOH/MSI type is a frequent event in prostate carcinogenesis and assessed as FAL index has clinical value for the molecular staging of prostate cancer in (TRUS)-guided prostate biopsy material.
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Abstract
S-adenosylmethionine (AdoMet, also known as SAM and SAMe) is the principal biological methyl donor synthesized in all mammalian cells but most abundantly in the liver. Biosynthesis of AdoMet requires the enzyme methionine adenosyltransferase (MAT). In mammals, two genes, MAT1A that is largely expressed by normal liver and MAT2A that is expressed by all extrahepatic tissues, encode MAT. Patients with chronic liver disease have reduced MAT activity and AdoMet levels. Mice lacking Mat1a have reduced hepatic AdoMet levels and develop oxidative stress, steatohepatitis, and hepatocellular carcinoma (HCC). In these mice, several signaling pathways are abnormal that can contribute to HCC formation. However, injury and HCC also occur if hepatic AdoMet level is excessive chronically. This can result from inactive mutation of the enzyme glycine N-methyltransferase (GNMT). Children with GNMT mutation have elevated liver transaminases, and Gnmt knockout mice develop liver injury, fibrosis, and HCC. Thus a normal hepatic AdoMet level is necessary to maintain liver health and prevent injury and HCC. AdoMet is effective in cholestasis of pregnancy, and its role in other human liver diseases remains to be better defined. In experimental models, it is effective as a chemopreventive agent in HCC and perhaps other forms of cancer as well.
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Affiliation(s)
- Shelly C Lu
- Division of Gastroenterology and Liver Diseases, USC Research Center for Liver Diseases, Southern California Research Center for ALPD and Cirrhosis, Keck School of Medicine, Los Angeles, California 90033, USA.
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Benight NM, Stoll B, Marini JC, Burrin DG. Preventative oral methylthioadenosine is anti-inflammatory and reduces DSS-induced colitis in mice. Am J Physiol Gastrointest Liver Physiol 2012; 303:G71-82. [PMID: 22556140 PMCID: PMC3404577 DOI: 10.1152/ajpgi.00549.2011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Methylthioadenosine (MTA) is a precursor of the methionine salvage pathway and has been shown to have anti-inflammatory properties in various models of acute and chronic inflammation. However, the anti-inflammatory properties of MTA in models of intestinal inflammation are not defined. We hypothesized that orally administered MTA would be bioavailable and reduce morbidity associated with experimental colitis. We examined clinical, histological, and molecular markers of disease in mice provided oral MTA before (preventative) or after (therapy) the induction of colitis with 3% dextran sulfate sodium (DSS). We found a reduction in disease activity, weight loss, myeloperoxidase activity, and histological damage in mice given preventative MTA compared with DSS alone. We also found that equivalent supplementation with methionine could not reproduce the anti-inflammatory effects of MTA, and that MTA had no detectable adverse effects in control or DSS mice. Expression microarray analysis of colonic tissue showed several dominant pathways related to inflammatory cytokines/chemokines and extracellular matrix remodeling were upregulation by DSS and suppressed in MTA-supplemented mice. MTA is rapidly absorbed in the gastrointestinal tract and disseminated throughout the body, based on a time course analysis of an oral bolus of MTA. This effect is transient, with MTA levels falling to near baseline within 90 min in most organs. Moreover, MTA did not lead to increased blood or tissue methionine levels, suggesting that its effects are specific. However, MTA provided limited therapeutic benefit when administered after the onset of colitis. Our results show that oral MTA supplementation is a safe and effective strategy to prevent inflammation and tissue injury associated with DSS colitis in mice. Additional studies in chronic inflammatory models are necessary to determine if MTA is a safe and beneficial option for the maintenance of remission in human inflammatory bowel disease.
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Affiliation(s)
- Nancy M. Benight
- 1US Department of Agriculture/Agricltural Research Service, Children's Nutrition Research Center, Baylor College of Medicine, Houston, Texas; and
| | - Barbara Stoll
- 1US Department of Agriculture/Agricltural Research Service, Children's Nutrition Research Center, Baylor College of Medicine, Houston, Texas; and
| | - Juan C. Marini
- 1US Department of Agriculture/Agricltural Research Service, Children's Nutrition Research Center, Baylor College of Medicine, Houston, Texas; and
| | - Douglas G. Burrin
- 1US Department of Agriculture/Agricltural Research Service, Children's Nutrition Research Center, Baylor College of Medicine, Houston, Texas; and ,2Section of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas
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Involvement of the ubiquitin-proteasome system in the formation of experimental postsurgical peritoneal adhesions. Mediators Inflamm 2012; 2012:194723. [PMID: 22496598 PMCID: PMC3306991 DOI: 10.1155/2012/194723] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Revised: 10/31/2011] [Accepted: 11/05/2011] [Indexed: 11/17/2022] Open
Abstract
We investigated the Ubiquitin-Proteasome System (UPS), major nonlysosomal intracellular protein degradation system, in the genesis of experimental postsurgical peritoneal adhesions. We assayed the levels of UPS within the adhered tissue along with the development of peritoneal adhesions and used the specific UPS inhibitor bortezomib in order to assess the effect of the UPS blockade on the peritoneal adhesions.
We found a number of severe postsurgical peritoneal adhesions at day 5 after surgery increasing until day 10. In the adhered tissue an increased values of ubiquitin and the 20S proteasome subunit, NFkB, IL-6, TNF-α and decreased values of IkB-beta were found. In contrast, bortezomib-treated rats showed a decreased number of peritoneal adhesions, decreased values of ubiquitin and the 20S proteasome, NFkB, IL-6, TNF-α, and increased levels of IkB-beta in the adhered peritoneal tissue.
The UPS system, therefore, is primarily involved in the formation of post-surgical peritoneal adhesions in rats.
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Collins CC, Volik SV, Lapuk AV, Wang Y, Gout PW, Wu C, Xue H, Cheng H, Haegert A, Bell RH, Brahmbhatt S, Anderson S, Fazli L, Hurtado-Coll A, Rubin MA, Demichelis F, Beltran H, Hirst M, Marra M, Maher CA, Chinnaiyan AM, Gleave M, Bertino JR, Lubin M, Wang Y. Next generation sequencing of prostate cancer from a patient identifies a deficiency of methylthioadenosine phosphorylase, an exploitable tumor target. Mol Cancer Ther 2012; 11:775-83. [PMID: 22252602 DOI: 10.1158/1535-7163.mct-11-0826] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Castrate-resistant prostate cancer (CRPC) and neuroendocrine carcinoma of the prostate are invariably fatal diseases for which only palliative therapies exist. As part of a prostate tumor sequencing program, a patient tumor was analyzed using Illumina genome sequencing and a matched renal capsule tumor xenograft was generated. Both tumor and xenograft had a homozygous 9p21 deletion spanning the MTAP, CDKN2, and ARF genes. It is rare for this deletion to occur in primary prostate tumors, yet approximately 10% express decreased levels of methylthioadenosine phosphorylase (MTAP) mRNA. Decreased MTAP expression is a prognosticator for poor outcome. Moreover, it seems that this deletion is more common in CRPC than in primary prostate cancer. We show for the first time that treatment with methylthioadenosine and high dose 6-thioguanine causes marked inhibition of a patient-derived neuroendocrine xenograft growth while protecting the host from 6-thioguanine toxicity. This therapeutic approach can be applied to other MTAP-deficient human cancers as deletion or hypermethylation of the MTAP gene occurs in a broad spectrum of tumors at high frequency. The combination of genome sequencing and patient-derived xenografts can identify candidate therapeutic agents and evaluate them for personalized oncology.
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Affiliation(s)
- Colin C Collins
- Vancouver Prostate Centre, University of British Columbia, Vancouver, British Columbia, Canada.
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Schaeffeler E, Hellerbrand C, Nies AT, Winter S, Kruck S, Hofmann U, van der Kuip H, Zanger UM, Koepsell H, Schwab M. DNA methylation is associated with downregulation of the organic cation transporter OCT1 (SLC22A1) in human hepatocellular carcinoma. Genome Med 2011; 3:82. [PMID: 22196450 PMCID: PMC3334547 DOI: 10.1186/gm298] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Revised: 11/08/2011] [Accepted: 12/23/2011] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Organic cation transporters (OCTs) determine not only physiological processes but are also involved in the cellular uptake of anticancer agents. Based on microarray analyses in hepatocellular carcinoma (HCC), SLC22A1/OCT1 mRNA seems to be downregulated, but systematic protein expression data are currently missing. Moreover, the underlying molecular mechanisms responsible for altered SLC22A1 expression in HCC are not fully understood. Therefore, we investigated the role of DNA methylation in the transcriptional regulation of the family members SLC22A1/OCT1, SLC22A2/OCT2 and SLC22A3/OCT3 in HCC. METHODS Semiquantitative immunohistochemistry of SLC22A1 protein expression was performed in paired HCC and histological normal adjacent liver tissues (n = 71) using tissue microarray analyses, and the results were correlated with clinicopathological features. DNA methylation, quantified by MALDI-TOF mass spectrometry and gene expression of SLC22A1, SLC22A2 and SLC22A3 were investigated using fresh-frozen HCC (n = 22) and non-tumor adjacent liver tissues as well as histologically normal liver samples (n = 120) from a large-scale liverbank. RESULTS Based on tissue microarray analyses, we observed a significant downregulation of SLC22A1 protein expression in HCC compared to normal adjacent tissue (P < 0.0001). SLC22A1 expression was significantly inverse correlated with expression of the proliferation marker MIB1/Ki-67 (rs = -0.464, P < 0.0001). DNA methylation of SLC22A1 was significantly higher in HCC compared with non-tumor adjacent liver tissue and was lowest in histologically normal liver tissue. Methylation levels for SLC22A1 in combination with RASSF1A resulted in a specificity of > 90% and a sensitivity of 82% for discriminating HCC and tumor-free liver tissue. CONCLUSIONS DNA methylation of SLC22A1 is associated with downregulation of SLC22A1 in HCC and might be a new biomarker for HCC diagnosis and prognosis. Moreover, targeting SLC22A1 methylation by demethylating agents may offer a novel strategy for anticancer therapy of HCC.
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Affiliation(s)
- Elke Schaeffeler
- Dr Margarete Fischer-Bosch Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376 Stuttgart, Germany
| | - Claus Hellerbrand
- Department of Internal Medicine I, University Hospital Regensburg, Franz-Josef-Strauss-Allee 11, 93053 Regensburg, Germany
| | - Anne T Nies
- Dr Margarete Fischer-Bosch Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376 Stuttgart, Germany
| | - Stefan Winter
- Dr Margarete Fischer-Bosch Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376 Stuttgart, Germany
| | - Stephan Kruck
- Department of Urology, University Hospital Tuebingen, Hoppe-Seyler-Strasse 3, 72076 Tuebingen, Germany
| | - Ute Hofmann
- Dr Margarete Fischer-Bosch Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376 Stuttgart, Germany
| | - Heiko van der Kuip
- Dr Margarete Fischer-Bosch Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376 Stuttgart, Germany
| | - Ulrich M Zanger
- Dr Margarete Fischer-Bosch Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376 Stuttgart, Germany
| | - Hermann Koepsell
- Institute for Anatomy and Cell Biology, University of Wuerzburg, Koellikerstrasse 6, 97070 Wuerzburg, Germany
| | - Matthias Schwab
- Dr Margarete Fischer-Bosch Institute of Clinical Pharmacology, Auerbachstrasse 112, 70376 Stuttgart, Germany
- Department of Clinical Pharmacology, University Hospital Tuebingen, Otfried-Mueller-Strasse 45, 72076 Tuebingen Germany
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