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Nishizawa N, Kurasaka C, Ogino Y, Sato A. Regulation of 5-fluorodeoxyuridine monophosphate-thymidylate synthase ternary complex levels by autophagy confers resistance to 5-fluorouracil. FASEB Bioadv 2022; 5:43-51. [PMID: 36643896 PMCID: PMC9832531 DOI: 10.1096/fba.2022-00099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 10/27/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022] Open
Abstract
5-Fluorouracil (5-FU) is a cornerstone drug used to treat colorectal cancer (CRC). However, the prolonged exposure of CRC cells to 5-FU results in acquired resistance. We have previously demonstrated that levels of the 5-fluorodeoxyuridylate (FdUMP) covalent complex with thymidylate synthase (FdUMP-TS) and free-TS (native enzyme) are higher in 5-FU-resistant CRC cells than in the parental cell line (HCT116). Accordingly, resistant cells may have an efficient system for trapping and removing FdUMP-TS, thus imparting resistance. In this study, using a model of 5-FU-resistant CRC cells generated by repeated exposure, the role of autophagy in the elimination of FdUMP-TS in resistant cells was investigated. The resistant cells showed greater sensitivity to autophagy inhibitors than that of parental cells. Autophagy inhibition increased 5-FU cytotoxicity more substantially in resistant cells than in parental cells. Furthermore, autophagy inhibition increased FdUMP-TS protein accumulation in resistant cells. Our findings suggest that resistance to 5-FU is mediated by autophagy as a system to eliminate FdUMP-TS and may guide the use and optimization of combination therapies involving autophagy inhibitors.
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Affiliation(s)
- Nana Nishizawa
- Department of Biochemistry and Molecular Biology, Faculty of Pharmaceutical SciencesTokyo University of ScienceChibaJapan
| | - Chinatsu Kurasaka
- Department of Biochemistry and Molecular Biology, Faculty of Pharmaceutical SciencesTokyo University of ScienceChibaJapan,Present address:
Kowa Company Ltd.Nihonbashi‐HonchoTokyoJapan
| | - Yoko Ogino
- Department of Biochemistry and Molecular Biology, Faculty of Pharmaceutical SciencesTokyo University of ScienceChibaJapan,Present address:
Department of Gene Regulation, Faculty of Pharmaceutical SciencesTokyo University of ScienceChibaJapan
| | - Akira Sato
- Department of Biochemistry and Molecular Biology, Faculty of Pharmaceutical SciencesTokyo University of ScienceChibaJapan
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Zumaya ALV, Rimpelová S, Štějdířová M, Ulbrich P, Vilčáková J, Hassouna F. Antibody Conjugated PLGA Nanocarriers and Superparmagnetic Nanoparticles for Targeted Delivery of Oxaliplatin to Cells from Colorectal Carcinoma. Int J Mol Sci 2022; 23:ijms23031200. [PMID: 35163122 PMCID: PMC8835878 DOI: 10.3390/ijms23031200] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 01/14/2022] [Accepted: 01/19/2022] [Indexed: 02/04/2023] Open
Abstract
Anti-CD133 monoclonal antibody (Ab)-conjugated poly(lactide-co-glycolide) (PLGA) nanocarriers, for the targeted delivery of oxaliplatin (OXA) and superparamagnetic nanoparticles (IO-OA) to colorectal cancer cells (CaCo-2), were designed, synthesized, characterized, and evaluated in this study. The co-encapsulation of OXA and IO-OA was achieved in two types of polymeric carriers, namely, PLGA and poly(lactide-co-glycolide)-poly(ethylene glycol) (PLGA-PEG) by double emulsion. PLGA_IO-OA_OXA and PEGylated PLGA_IO-OA_OXA nanoparticles displayed a comparable mean diameter of 207 ± 70 nm and 185 ± 119 nm, respectively. The concentration of the released OXA from the PEGylated PLGA_IO-OA_OXA increased very rapidly, reaching ~100% release after only 2 h, while the PLGA_IO-OA_OXA displayed a slower and sustained drug release. Therefore, for a controlled OXA release, non-PEGylated PLGA nanoparticles were more convenient. Interestingly, preservation of the superparamagnetic behavior of the IO-OA, without magnetic hysteresis all along the dissolution process, was observed. The non-PEGylated nanoparticles (PLGA_OXA, PLGA_IO-OA_OXA) were selected for the anti-CD133 Ab conjugation. The affinity of Ab-coated nanoparticles for CD133-positive cells was examined using fluorescence microscopy in CaCo-2 cells, which was followed by a viability assay.
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Affiliation(s)
- Alma Lucia Villela Zumaya
- Faculty of Chemical Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (A.L.V.Z.); (M.Š.)
| | - Silvie Rimpelová
- Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (S.R.); (P.U.)
| | - Markéta Štějdířová
- Faculty of Chemical Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (A.L.V.Z.); (M.Š.)
| | - Pavel Ulbrich
- Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (S.R.); (P.U.)
| | - Jarmila Vilčáková
- Faculty of Technology, Tomas Bata University, 760 01 Zlín, Czech Republic;
| | - Fatima Hassouna
- Faculty of Chemical Engineering, University of Chemistry and Technology Prague, 166 28 Prague, Czech Republic; (A.L.V.Z.); (M.Š.)
- Correspondence: ; Tel.: +420-220-444-099
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Kotake M, Bando H, Kaneko M, Takemura H, Minamoto T, Kawakami K. Thymidylate synthase locus LOH in combination with genotype has prognostic and predictive significance in colorectal cancer. Mol Clin Oncol 2021; 15:235. [PMID: 34650802 PMCID: PMC8506693 DOI: 10.3892/mco.2021.2398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 07/22/2021] [Indexed: 11/06/2022] Open
Abstract
The aim of the current study was to investigate the prognostic and predictive significance of polymorphisms in the thymidylate synthase (TS) gene, alongside the loss of heterozygocity (LOH) at this gene locus in patients with colorectal cancer. Genotyping was carried out for a variable number tandem repeat (VNTR) polymorphism in the TS 5'-untranslated region, a G/C single nucleotide polymorphism (SNP) located within this VNTR, and for TS LOH status in 246 colorectal cancer and paired normal DNA samples. The results were analyzed in relation to clinicopathological features, including the prognostic and predictive significance of TS genotype in patients who underwent curative surgery. Complete VNTR, SNP and LOH information for TS was obtained in 226 cases. No significant associations were observed between normal tissue TS genotype status and clinicopathological features. LOH of TS was observed in 58% of tumor samples and was associated with poor prognosis independently of clinical stage. Cases exhibiting TS LOH were classified into the three groups of 2R/loss, 3G/loss and 3C/loss. Patients with 3C/loss genotype status had poor outcomes when treated by surgery alone, but their survival was similar to patients with other genotypes following Fluorouracil (5-FU)-based adjuvant chemotherapy. The results suggested that LOH of the TS locus may be a significant prognostic factor in colorectal cancer, with the genotype of the residual allele also demonstrating an influence on prognosis. In conclusion, LOH status should be considered when TS genotype is explored as a potential prognostic and predictive marker for 5-FU-based adjuvant chemotherapy in colorectal cancer.
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Affiliation(s)
- Masanori Kotake
- Department of General and Cardiothoracic Surgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Ishikawa 920-8641, Japan.,Department of Gastrointestinal Surgery, Ishikawa Prefectural Central Hospital, Kanazawa, Ishikawa 920-8530, Japan.,Department of Surgery, Kouseiren Takaoka Hospital, Takaoka, Toyama 933-8555, Japan.,Division of Translational and Clinical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa 920-0934, Japan
| | - Hiroyuki Bando
- Department of Gastrointestinal Surgery, Ishikawa Prefectural Central Hospital, Kanazawa, Ishikawa 920-8530, Japan
| | - Mami Kaneko
- Department of General and Cardiothoracic Surgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Ishikawa 920-8641, Japan.,Department of Gastrointestinal Surgery, Ishikawa Prefectural Central Hospital, Kanazawa, Ishikawa 920-8530, Japan.,Division of Translational and Clinical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa 920-0934, Japan
| | - Hirofumi Takemura
- Department of General and Cardiothoracic Surgery, Graduate School of Medical Science, Kanazawa University, Kanazawa, Ishikawa 920-8641, Japan
| | - Toshinari Minamoto
- Division of Translational and Clinical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa 920-0934, Japan
| | - Kazuyuki Kawakami
- Division of Translational and Clinical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa 920-0934, Japan.,Department of Chemotherapy and Palliative Care, Tokyo Women's Medical University, Tokyo 162-8666, Japan
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4
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Sato Y, Tomita M, Soga T, Ochiai A, Makinoshima H. Upregulation of Thymidylate Synthase Induces Pemetrexed Resistance in Malignant Pleural Mesothelioma. Front Pharmacol 2021; 12:718675. [PMID: 34646134 PMCID: PMC8504579 DOI: 10.3389/fphar.2021.718675] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 09/14/2021] [Indexed: 12/29/2022] Open
Abstract
Malignant pleural mesothelioma (MPM) is an invasive malignancy that develops in the pleural cavity, and antifolates are used as chemotherapeutics for treating. The majority of antifolates, including pemetrexed (PMX), inhibit enzymes involved in purine and pyrimidine synthesis. MPM patients frequently develop drug resistance in clinical practice, however the associated drug-resistance mechanism is not well understood. This study was aimed to elucidate the mechanism underlying resistance to PMX in MPM cell lines. We found that among the differentially expressed genes associated with drug resistance (determined by RNA sequencing), TYMS expression was higher in the established resistant cell lines than in the parental cell lines. Knocking down TYMS expression significantly reduced drug resistance in the resistant cell lines. Conversely, TYMS overexpression significantly increased drug resistance in the parental cells. Metabolomics analysis revealed that the levels of dTMP were higher in the resistant cell lines than in the parental cell lines; however, resistant cells showed no changes in dTTP levels after PMX treatment. We found that the nucleic acid-biosynthetic pathway is important for predicting the efficacy of PMX in MPM cells. The results of chromatin immunoprecipitation-quantitative polymerase chain reaction (ChIP-qPCR) assays suggested that H3K27 acetylation in the 5′-UTR of TYMS may promote its expression in drug-resistant cells. Our findings indicate that the intracellular levels of dTMP are potential biomarkers for the effective treatment of patients with MPM and suggest the importance of regulatory mechanisms of TYMS expression in the disease.
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Affiliation(s)
- Yuzo Sato
- Tsuruoka Metabolomics Laboratory, National Cancer Center, Tsuruoka, Japan.,Shonai Regional Industry Promotion Center, Tsuruoka, Japan.,Systems Biology Program, Graduate School of Media and Governance, Keio University, Fujisawa, Japan.,Institute for Advanced Biosciences, Keio University, Tsuruoka, Japan
| | - Masaru Tomita
- Systems Biology Program, Graduate School of Media and Governance, Keio University, Fujisawa, Japan.,Institute for Advanced Biosciences, Keio University, Tsuruoka, Japan
| | - Tomoyoshi Soga
- Systems Biology Program, Graduate School of Media and Governance, Keio University, Fujisawa, Japan.,Institute for Advanced Biosciences, Keio University, Tsuruoka, Japan
| | - Atsushi Ochiai
- Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
| | - Hideki Makinoshima
- Tsuruoka Metabolomics Laboratory, National Cancer Center, Tsuruoka, Japan.,Division of Translational Information, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Kashiwa, Japan
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5
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Haritha NH, Nawab A, Vijayakurup V, Anto NP, Liju VB, Alex VV, Amrutha AN, Aiswarya SU, Swetha M, Vinod BS, Sundaram S, Guijarro MV, Herlevich T, Krishna A, Nestory NK, Bava SV, Sadasivan C, Zajac-Kaye M, Anto RJ. Targeting Thymidylate Synthase Enhances the Chemosensitivity of Triple-Negative Breast Cancer Towards 5-FU-Based Combinatorial Therapy. Front Oncol 2021; 11:656804. [PMID: 34336653 PMCID: PMC8320437 DOI: 10.3389/fonc.2021.656804] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 06/28/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The ongoing treatment modalities for breast cancer (BC) primarily rely on the expression status of ER, PR and HER-2 receptors in BC tissues. Our strategy of chemosensitization provides new insights to counter chemoresistance, a major obstacle that limits the benefits of chemotherapy of mammary cancers. METHODS By utilizing a murine breast cancer model employing NSG mice bearing orthotopic triple-negative breast cancer (TNBC) xenografts, we have evaluated the ability of phytochemical curcumin in chemosensitizing BC to 5-Fluorouracil (5-FU) chemotherapy and the differential modulations of cellular events in response to this strategy, independent of their receptor status. RESULTS A significant synergistic antitumor potential was observed in the murine model with a sub-optimal dose treatment of 5-FU plus curcumin, as evaluated by a reduction in the tumor-related parameters. We authenticated the pivotal role of thymidylate synthase (TS) in regulating the 5-FU-curcumin synergism using the TNBC pre-clinical model. Our study also confirmed the pharmacological safety of this chemotherapeutic plus phytoactive combination using acute and chronic toxicity studies in Swiss albino mice. Subsequently, the molecular docking analysis of curcumin binding to TS demonstrated the affinity of curcumin towards the cofactor-binding site of TS, rather than the substrate-binding site, where 5-FU binds. Our concomitant in vivo and in silico evidence substantiates the superior therapeutic index of this combination. CONCLUSION This is the first-ever pre-clinical study portraying TS as the critical target of combinatorial therapy for mammary carcinomas and therefore we recommend its clinical validation, especially in TNBC patients, who currently have limited therapeutic options.
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Affiliation(s)
- Nair Hariprasad Haritha
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
| | - Akbar Nawab
- Department of Anatomy and Cell Biology, Cancer and Genetics Research Complex, University of Florida, Gainesville, FL, United States
| | - Vinod Vijayakurup
- Department of Anatomy and Cell Biology, Cancer and Genetics Research Complex, University of Florida, Gainesville, FL, United States
| | - Nikhil Ponnoor Anto
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Vijayasteltar B. Liju
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
| | - Vijai V. Alex
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
| | | | | | - Mundanattu Swetha
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
| | - Balachandran S. Vinod
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
| | - Sankar Sundaram
- Department of Pathology, Government Medical College, Kottayam, India
| | - Maria V. Guijarro
- Department of Anatomy and Cell Biology, Cancer and Genetics Research Complex, University of Florida, Gainesville, FL, United States
| | - Thomas Herlevich
- Department of Anatomy and Cell Biology, Cancer and Genetics Research Complex, University of Florida, Gainesville, FL, United States
| | - Archana Krishna
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
| | - Nesteena K. Nestory
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
| | - Smitha V. Bava
- Department of Biotechnology, University of Calicut, Malappuram, India
| | | | - Maria Zajac-Kaye
- Department of Anatomy and Cell Biology, Cancer and Genetics Research Complex, University of Florida, Gainesville, FL, United States
| | - Ruby John Anto
- Division of Cancer Research, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
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6
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Dong SQ, Wang TM, Zhang JB, He YQ, Xue WQ, Wu ZY, Yang DW, Cao LJ, Huang JW, Li XZ, Zhang PF, Zheng XH, Jia WH. Polymorphisms in TYMS for Prediction of Capecitabine-Induced Hand-Foot Syndrome in Chinese Patients with Colorectal Cancer. Cancer Res Treat 2020; 53:724-732. [PMID: 33285053 PMCID: PMC8291172 DOI: 10.4143/crt.2020.457] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 12/01/2020] [Indexed: 12/14/2022] Open
Abstract
Purpose Capecitabine is an extensively used oral prodrug of 5-fluorouracil in treatment of colon cancer and is known to cause hand-foot syndrome (HFS). As the target enzyme for capecitabine, thymidylate synthase (TYMS) plays a key role for 5-fluorouracil metabolism and has been associated with some side effects caused by capecitabine. The aim of our study is to identify the possible genetic predictors of capecitabine-induced HFS (CAP-HFS) in Chinese colorectal cancer patients. Materials and Methods Whole exons of TYMS were sequenced for 288 extreme phenotype HFS patients, including 144 severe or early-onset (first 2 cycles) moderate HFS extreme cases and 144 extreme controls with no reported HFS. The associations between polymorphisms and CAP-HFS were analyzed using logistic regression under an additive model. Results We identified a novel risk mutation (c.1A>G, chr18:657743), was associated with severe HFS in an extreme case who was affected during the first cycle of treatment. Moreover, we identified three new variants, rs3786362, rs699517, rs2790, and two previously reported variants, 5’VNTR 2R/3R and 3′-untranslated region 6-bp ins-del, which were significantly associated with CAP-HFS (p < 0.05). In silico analysis revealed that the effect of these polymorphisms in the TYMS region on the development of HFS might not be restricted solely to the regulation of TYMS expression, but also the TYMS catalytic activity through the indirect effect on ENOSF1 expression. Conclusion This study identified new polymorphisms in TYMS gene significantly associated with CAP-HFS, which may serve as useful genetic predictors for CAP-HFS and help to elucidate the underlying mechanism of HFS.
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Affiliation(s)
- Si-Qi Dong
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Tong-Min Wang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Jiang-Bo Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Yong-Qiao He
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Wen-Qiong Xue
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Zi-Yi Wu
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Da-Wei Yang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Lian-Jing Cao
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Jing-Wen Huang
- School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xi-Zhao Li
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Pei-Fen Zhang
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Xiao-Hui Zheng
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Wei-Hua Jia
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China.,School of Public Health, Sun Yat-sen University, Guangzhou, China.,Cancer Center of Guangzhou Medical University, Guangzhou, China
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7
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Li AM, Ye J. Reprogramming of serine, glycine and one-carbon metabolism in cancer. Biochim Biophys Acta Mol Basis Dis 2020; 1866:165841. [PMID: 32439610 DOI: 10.1016/j.bbadis.2020.165841] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 04/28/2020] [Accepted: 05/10/2020] [Indexed: 02/06/2023]
Abstract
Metabolic pathways leading to the synthesis, uptake, and usage of the nonessential amino acid serine are frequently amplified in cancer. Serine encounters diverse fates in cancer cells, including being charged onto tRNAs for protein synthesis, providing head groups for sphingolipid and phospholipid synthesis, and serving as a precursor for cellular glycine and one-carbon units, which are necessary for nucleotide synthesis and methionine cycle reloading. This review will focus on the participation of serine and glycine in the mitochondrial one-carbon (SGOC) pathway during cancer progression, with an emphasis on the genetic and epigenetic determinants that drive SGOC gene expression. We will discuss recently elucidated roles for SGOC metabolism in nucleotide synthesis, redox balance, mitochondrial function, and epigenetic modifications. Finally, therapeutic considerations for targeting SGOC metabolism in the clinic will be discussed.
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Affiliation(s)
- Albert M Li
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305, USA; Cancer Biology Program, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Jiangbin Ye
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, CA 94305, USA; Cancer Biology Program, Stanford University School of Medicine, Stanford, CA 94305, USA; Stanford Cancer Institute, Stanford University School of Medicine, Stanford, CA 94305, USA.
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8
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Okamura Y, Yasukawa S, Narimatsu H, Boku N, Fukutomi A, Konishi M, Morinaga S, Toyama H, Kaneoka Y, Shimizu Y, Nakamori S, Sata N, Yamakita K, Takahashi A, Kainuma O, Hishinuma S, Yamaguchi R, Nagino M, Hirano S, Yanagisawa A, Mori K, Uesaka K. Human equilibrative nucleoside transporter-1 expression is a predictor in patients with resected pancreatic cancer treated with adjuvant S-1 chemotherapy. Cancer Sci 2020; 111:548-560. [PMID: 31778273 PMCID: PMC7004513 DOI: 10.1111/cas.14258] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Revised: 11/20/2019] [Accepted: 11/22/2019] [Indexed: 02/06/2023] Open
Abstract
The high expression of human equilibrative nucleoside transporter-1 (hENT1) and the low expression of dihydropyrimidine dehydrogenase (DPD) are reported to predict a favorable prognosis in patients treated with gemcitabine (GEM) and 5-fluorouracil (5FU) as the adjuvant setting, respectively. The expression of hENT1 and DPD were analyzed in patients registered in the JASPAC 01 trial, which showed a better survival of S-1 over GEM as adjuvant chemotherapy after resection for pancreatic cancer, and their possible roles for predicting treatment outcomes and selecting a chemotherapeutic agent were investigated. Intensity of hENT1 and DPD expression was categorized into no, weak, moderate or strong by immunohistochemistry staining, and the patients were classified into high (strong/moderate) and low (no/weak) groups. Specimens were available for 326 of 377 (86.5%) patients. High expression of hENT1 and DPD was detected in 100 (30.7%) and 63 (19.3%) of 326 patients, respectively. In the S-1 arm, the median overall survival (OS) with low hENT1, 58.0 months, was significantly better than that with high hENT1, 30.9 months (hazard ratio 1.75, P = 0.007). In contrast, there were no significant differences in OS between DPD low and high groups in the S-1 arm and neither the expression levels of hENT1 nor DPD revealed a relationship with treatment outcomes in the GEM arm. The present study did not show that the DPD and hENT1 are useful biomarkers for choosing S-1 or GEM as adjuvant chemotherapy. However, hENT1 expression is a significant prognostic factor for survival in the S-1 arm.
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Affiliation(s)
- Yukiyasu Okamura
- Division of Hepato‐Biliary‐Pancreatic SurgeryShizuoka Cancer Center HospitalNagaizumiJapan
| | | | - Hiroto Narimatsu
- Cancer Prevention and Control DivisionKanagawa Cancer CenterYokohamaJapan
| | - Narikazu Boku
- Gastrointestinal Medical OncologyNational Cancer Center HospitalTokyoJapan
| | - Akira Fukutomi
- Gastrointestinal OncologyShizuoka Cancer CenterShizuokaJapan
| | - Masaru Konishi
- Hepato‐Biliary‐Pancreatic SurgeryNational Cancer Center Hospital EastKashiwaJapan
| | - Soichiro Morinaga
- Department of Gastrointestinal SurgeryKanagawa Cancer CenterYokohamaJapan
| | | | | | | | - Shoji Nakamori
- SurgeryNational Hospital Organization Osaka National HospitalOsakaJapan
| | - Naohiro Sata
- Gastrointestinal SurgeryJichi Medical UniversityShimotsukeJapan
| | - Keisuke Yamakita
- Division of Metabolism and Biosystemic ScienceDepartment of MedicineAsahikawa Medical UniversityAsahikawaJapan
| | | | - Osamu Kainuma
- Gastrointestinal SurgeryChiba Cancer CenterChibaJapan
| | | | | | - Masato Nagino
- Division of Surgical OncologyDepartment of SurgeryNagoya University Graduate of School of MedicineNagoyaJapan
| | - Satoshi Hirano
- Gastroenterological Surgery IIFaculty of MedicineHokkaido UniversitySapporoJapan
| | | | - Keita Mori
- Clinical Trial Coordination Office BiostatisticianShizuoka Cancer Center HospitalNagaizumiJapan
| | - Katsuhiko Uesaka
- Division of Hepato‐Biliary‐Pancreatic SurgeryShizuoka Cancer Center HospitalNagaizumiJapan
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9
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Clinical Significance of Various Drug-Sensitivity Markers in Patients with Surgically Resected Pulmonary Pleomorphic Carcinoma. Cancers (Basel) 2019; 11:cancers11111636. [PMID: 31653009 PMCID: PMC6895922 DOI: 10.3390/cancers11111636] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 10/22/2019] [Indexed: 01/10/2023] Open
Abstract
Various drug-sensitivity markers are potentially responsible for tumor progression and chemotherapy resistance in cancer patients with both epithelial and sarcomatous components; however, the clinicopathological significance of drug-sensitivity markers in patients with pulmonary pleomorphic carcinoma (PPC) remains unknown. Here, we clarified the prognostic impact of these drug-sensitivity markers in PPC by performing immunohistochemical and clinicopathologic analyses of samples from 105 patients with surgically resected PPC in order to evaluate levels of vascular endothelial growth factor 2 (VEGFR2), stathmin 1 (STMN1), tubulin β3 class III (TUBB3), thymidylate synthetase (TS), topoisomerase II (Topo-II), glucose-regulated protein, and 78 kDa (GRP78)/binding immunoglobulin protein (BiP). We observed the rates of high expression for VEGFR2, STMN1, TUBB3, TS, Topo-II, and GRP78/BiP were 33% (39/105), 35% (37/105), 61% (64/105), 51% (53/105), 31% (33/105), and 51% (53/105) of the samples, respectively. Moreover, multivariate analysis identified VEGFR2 and GRP78/BiP as significant independent markers for predicting worse prognosis. These findings suggested elevated VEGFR2 and decreased GRP78/BiP levels as independent factors for predicting poor outcomes following surgical resection in patients with PPC.
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10
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Ando H, Fukushima M, Eshima K, Hasui T, Shimizu T, Ishima Y, Huang CL, Wada H, Ishida T. A novel intraperitoneal therapy for gastric cancer with DFP-10825, a unique RNAi therapeutic targeting thymidylate synthase, in a peritoneally disseminated xenograft model. Cancer Med 2019; 8:7313-7321. [PMID: 31609087 PMCID: PMC6885878 DOI: 10.1002/cam4.2598] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 09/11/2019] [Accepted: 09/19/2019] [Indexed: 12/21/2022] Open
Abstract
Purpose In advanced gastric cancer, peritoneal dissemination is a life‐threatening mode of metastasis. Since the treatment options with conventional chemotherapy remain limited, any novel therapeutic strategy that could control such metastasis would improve the outcome of treatment. We recently developed a unique RNA interference therapeutic regimen (DFP‐10825) consisting of short hairpin RNA against thymidylate synthase (TS shRNA) and cationic liposomes. The treatment with DFP‐10825 has shown remarkable antitumor activity in peritoneally disseminated human ovarian cancer–bearing mice via intraperitoneal administration. In this study, we expanded DFP‐10825 to the treatment of peritoneally disseminated gastric cancer. Methods DFP‐10825 was administered intraperitoneally into mice with intraperitoneally implanted human gastric cancer cells (MKN45 or NCI‐N87). Antitumor activity and host survival benefits were monitored. Intraperitoneal distribution of fluorescence‐labeled DFP‐10825 was monitored in this MKN45 peritoneally disseminated mouse model. Results Intraperitoneal injection of DFP‐10825 suppressed tumor growth in two peritoneally disseminated cancer models (MKN45 and NCI‐N87) and increased the survival time of the MKN45 model without severe side effects. Throughout the treatment regimen, no significant body weight loss was associated with the administration of DFP‐10825. Interestingly, after intraperitoneal injection, fluorescence‐labeled DFP‐10825 retained for more than 72 hours in the peritoneal cavity and selectively accumulated in disseminated tumors. Conclusions Intraperitoneal injection of DFP‐10825 demonstrated effective antitumor activity without systemic severe adverse effects via the selective delivery of RNAi molecules into disseminated tumors in the peritoneal cavity. Our current study indicates that DFP‐10825 could become an alternative option to improve the outcomes of patients with peritoneally disseminated gastric cancer.
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Affiliation(s)
- Hidenori Ando
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Masakazu Fukushima
- Department of Cancer Metabolism and Therapy, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan.,Delta-Fly Pharma Inc, Tokushima, Japan
| | | | - Taichi Hasui
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Taro Shimizu
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Yu Ishima
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Cheng-Long Huang
- Department of Thoracic Surgery, Faculty of Medicine, Kyoto University, Kyoto, Japan
| | - Hiromi Wada
- Department of Thoracic Surgery, Faculty of Medicine, Kyoto University, Kyoto, Japan
| | - Tatsuhiro Ishida
- Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
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11
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Gaetani M, Sabatier P, Saei AA, Beusch CM, Yang Z, Lundström SL, Zubarev RA. Proteome Integral Solubility Alteration: A High-Throughput Proteomics Assay for Target Deconvolution. J Proteome Res 2019; 18:4027-4037. [DOI: 10.1021/acs.jproteome.9b00500] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Massimiliano Gaetani
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 177 Stockholm, Sweden
- SciLifeLab, SE-17 177 Stockholm, Sweden
| | - Pierre Sabatier
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 177 Stockholm, Sweden
| | - Amir A. Saei
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 177 Stockholm, Sweden
| | - Christian M. Beusch
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 177 Stockholm, Sweden
| | - Zhe Yang
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 177 Stockholm, Sweden
| | - Susanna L. Lundström
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 177 Stockholm, Sweden
- SciLifeLab, SE-17 177 Stockholm, Sweden
| | - Roman A. Zubarev
- Division of Physiological Chemistry I, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, SE-17 177 Stockholm, Sweden
- SciLifeLab, SE-17 177 Stockholm, Sweden
- Department of Pharmacological & Technological Chemistry, I.M. Sechenov First Moscow State Medical University, Moscow, 119146, Russia
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12
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Predictive and Prognostic Value of 18F-fluorodeoxyglucose Uptake Combined with Thymidylate Synthase Expression in Patients with Advanced Non-Small Cell Lung Cancer. Sci Rep 2019; 9:12215. [PMID: 31434972 PMCID: PMC6704155 DOI: 10.1038/s41598-019-48674-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 08/09/2019] [Indexed: 11/30/2022] Open
Abstract
We investigated the relationship between tumor 18F-fluorodeoxyglucose (FDG) uptake on positron emission tomography/computed tomography (PET/CT) scans and thymidylate synthase (TS) expression. In addition, we evaluated the value of FDG uptake in predicting treatment response and prognosis when combined with TS expression in patients with advanced non-small cell lung cancer (NSCLC). We measured the maximum standard uptake value, metabolic tumor volume, and total lesion glycolysis (TLG) of tumor lesions on pretreatment scan in 234 patients (age: 60.1 ± 9.4 years; males: 56.4%) with stage IV non-squamous NSCLC who were enrolled in the prospective phase II clinical trial. We investigated the correlation of the parameters with TS expression and the predictive values of the parameters compared with other clinical factors. Among these parameters, TLG was the most relevant parameter that had a significant correlation with TS expression (ρ = 0.192, P = 0.008). A multivariable Cox proportional-hazards model revealed that high TLG was a significant independent predictor for treatment response (hazard ratio [HR]: 2.05; P = 0.027), progression-free survival (HR: 1.39; P = 0.043), and overall survival (HR: 1.65; P = 0.035) with other factors. In patients with advanced non-squamous NSCLC, tumor TLG on pretreatment PET/CT scan has predictive and prognostic value.
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13
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Coelho RC, Abreu PDP, Monteiro MR, Stramosk AP, Garces AHI, Melo AC, Graudenz MS, Andrade CJC. Cisplatin, Fluorouracil in Bolus Injection, and Leucovorin in First-Line Therapy for Advanced Gastric Cancer as an Alternative to Protocols With Infusional Fluorouracil. J Glob Oncol 2019; 5:1-8. [PMID: 30668271 PMCID: PMC6426504 DOI: 10.1200/jgo.18.00176] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE Gastric cancer (GC) is the fourth most common cancer and the second leading cause of cancer death worldwide. Platinum agents and fluoropyrimidines are the main compounds used in the first-line setting for advanced GC. Given the activity of fluorouracil (FU) bolus, the PFL protocol, a chemotherapy regimen combining cisplatin, FU bolus, and leucovorin, was incorporated at the Brazilian National Cancer Institute, because this schedule does not require hospitalization or infusion pumps. This study aims to evaluate the outcomes of PFL in the first-line setting for patients with advanced GC. MATERIALS AND METHODS This was a retrospective cohort study evaluating patients with advanced GC treated in the first-line setting with cisplatin 80 mg/m2 on day 1 and FU bolus 400 mg/m2 plus leucovorin 20 mg/m2 on days 1, 8, 15, and 22 every 4 weeks, from January 2008 to December 2014. RESULTS A total of 109 patients were enrolled. The median number of cycles received per patient was four (one to 11). Complete responses were achieved in 6.4% and partial responses in 14.7%. Median progression-free survival was 6.3 months (95% CI, 5.08 to 7.58 months) and median overall survival was 8.3 months (95% CI, 6.79 to 9.87 months). Thirty-four (31.2%) patients were alive in 1 year. Grade 3 and 4 adverse events were experienced by 26.6% and 3.7% of patients, respectively, with dose reduction necessary in 9.1%. CONCLUSION PFL is active in advanced GC and could be an alternative for FU continuous infusion protocols in institutions with limited resources and/or low budget, which is the reality in many nations all over the world.
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Affiliation(s)
- Rafael C Coelho
- Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | | | | | | | | | | | - Marcia S Graudenz
- Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.,Hospital de Clinicas de Porto Alegre, Porto Alegre, Brazil
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14
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Yoshida N, Kanno A, Masamune A, Nabeshima T, Hongo S, Miura S, Takikawa T, Hamada S, Kikuta K, Kume K, Ueno M, Shimosegawa T. Pancreatic Acinar Cell Carcinoma with Multiple Liver Metastases Effectively Treated by S-1 Chemotherapy. Intern Med 2018; 57:3529-3535. [PMID: 30101903 PMCID: PMC6355402 DOI: 10.2169/internalmedicine.0294-17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A 79-year-old woman was referred for pancreatic tail cancer with multiple liver metastases. The pancreatic tail tumor was diagnosed as acinar cell carcinoma (ACC) histologically by endoscopic ultrasound-guided fine-needle aspiration. Because of multiple liver metastases, S-1 chemotherapy was administered, resulting in a partial response to chemotherapy one year later. After approximately three years, liver atrophy and esophageal varices developed. We suspected S-1 as the cause of the liver cirrhosis. S-1 cessation minimized ascites and improved the esophageal varices. Although S-1 can potentially treat ACC, we should be watchful for liver cirrhosis caused by its long-term administration.
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Affiliation(s)
- Naoki Yoshida
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan
| | - Atsushi Kanno
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan
| | - Atsushi Masamune
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan
| | - Tatsuhide Nabeshima
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan
| | - Seiji Hongo
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan
| | - Shin Miura
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan
| | - Tetsuya Takikawa
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan
| | - Shin Hamada
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan
| | - Kazuhiro Kikuta
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan
| | - Kiyoshi Kume
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan
| | - Masamichi Ueno
- Division of Internal Medicine, Tohoku Medical and Pharmaceutical University Wakabayashi Hospital, Japan
| | - Tooru Shimosegawa
- Division of Gastroenterology, Tohoku University Graduate School of Medicine, Japan
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15
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Lim YT, Prabhu N, Dai L, Go KD, Chen D, Sreekumar L, Egeblad L, Eriksson S, Chen L, Veerappan S, Teo HL, Tan CSH, Lengqvist J, Larsson A, Sobota RM, Nordlund P. An efficient proteome-wide strategy for discovery and characterization of cellular nucleotide-protein interactions. PLoS One 2018; 13:e0208273. [PMID: 30521565 PMCID: PMC6283526 DOI: 10.1371/journal.pone.0208273] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 11/14/2018] [Indexed: 12/03/2022] Open
Abstract
Metabolite-protein interactions define the output of metabolic pathways and regulate many cellular processes. Although diseases are often characterized by distortions in metabolic processes, efficient means to discover and study such interactions directly in cells have been lacking. A stringent implementation of proteome-wide Cellular Thermal Shift Assay (CETSA) was developed and applied to key cellular nucleotides, where previously experimentally confirmed protein-nucleotide interactions were well recaptured. Many predicted, but never experimentally confirmed, as well as novel protein-nucleotide interactions were discovered. Interactions included a range of different protein families where nucleotides serve as substrates, products, co-factors or regulators. In cells exposed to thymidine, a limiting precursor for DNA synthesis, both dose- and time-dependence of the intracellular binding events for sequentially generated thymidine metabolites were revealed. Interactions included known cancer targets in deoxyribonucleotide metabolism as well as novel interacting proteins. This stringent CETSA based strategy will be applicable for a wide range of metabolites and will therefore greatly facilitate the discovery and studies of interactions and specificities of the many metabolites in human cells that remain uncharacterized.
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Affiliation(s)
- Yan Ting Lim
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Nayana Prabhu
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Lingyun Dai
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Ka Diam Go
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Dan Chen
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Lekshmy Sreekumar
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Louise Egeblad
- Department of Anatomy, Physiology and Biochemistry, The Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Staffan Eriksson
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Liyan Chen
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Saranya Veerappan
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Hsiang Ling Teo
- NTU Institute of Structural Biology, Nanyang Technological University, Singapore, Singapore
| | - Chris Soon Heng Tan
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore, Singapore
| | - Johan Lengqvist
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
| | - Andreas Larsson
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Radoslaw M. Sobota
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore, Singapore
- * E-mail: (PN); (RMS)
| | - Pär Nordlund
- School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
- Department of Oncology and Pathology, Karolinska Institutet, Stockholm, Sweden
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research, Singapore, Singapore
- * E-mail: (PN); (RMS)
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16
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Are Colon and Rectal Cancer Two Different Tumor Entities? A Proposal to Abandon the Term Colorectal Cancer. Int J Mol Sci 2018; 19:ijms19092577. [PMID: 30200215 PMCID: PMC6165083 DOI: 10.3390/ijms19092577] [Citation(s) in RCA: 125] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Accepted: 08/20/2018] [Indexed: 01/06/2023] Open
Abstract
Colon cancer (CC) and rectal cancer (RC) are synonymously called colorectal cancer (CRC). Based on our experience in basic and clinical research as well as routine work in the field, the term CRC should be abandoned. We analyzed the available data from the literature and results from our multicenter Research Group Oncology of Gastrointestinal Tumors termed FOGT to confirm or reject this hypothesis. Anatomically, the risk of developing RC is four times higher than CC, while physical activity helps to prevent CC but not RC. Obvious differences exist in molecular carcinogenesis, pathology, surgical topography and procedures, and multimodal treatment. Therefore, we conclude that CC is not the same as RC. The term "CRC" should no longer be used as a single entity in basic and clinical research as well as other areas of classification.
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17
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Ghith A, Ismail NS, Youssef K, Abouzid KA. Medicinal Attributes of Thienopyrimidine Based Scaffold Targeting Tyrosine Kinases and Their Potential Anticancer Activities. Arch Pharm (Weinheim) 2017; 350. [DOI: 10.1002/ardp.201700242] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 08/14/2017] [Accepted: 09/05/2017] [Indexed: 01/02/2023]
Affiliation(s)
- Amna Ghith
- Faculty of Pharmaceutical Sciences and Pharmaceutical Industries; Department of Pharmaceutical Chemistry; Future University in Egypt; Cairo Egypt
| | - Nasser S.M. Ismail
- Faculty of Pharmaceutical Sciences and Pharmaceutical Industries; Department of Pharmaceutical Chemistry; Future University in Egypt; Cairo Egypt
| | - Khairia Youssef
- Faculty of Pharmaceutical Sciences and Pharmaceutical Industries; Department of Pharmaceutical Chemistry; Future University in Egypt; Cairo Egypt
| | - Khaled A.M. Abouzid
- Faculty of Pharmacy; Department of Pharmaceutical Chemistry; Ain Shams University; Abbassia, Cairo Egypt
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18
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Xiao Y, Yurievich UA, Yosypovych SV. Long noncoding RNA XIST is a prognostic factor in colorectal cancer and inhibits 5-fluorouracil-induced cell cytotoxicity through promoting thymidylate synthase expression. Oncotarget 2017; 8:83171-83182. [PMID: 29137332 PMCID: PMC5669958 DOI: 10.18632/oncotarget.20487] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2017] [Accepted: 07/25/2017] [Indexed: 01/17/2023] Open
Abstract
A major reason for the failure of advanced colorectal cancer (CRC) treatment is the occurrence of chemoresistance to 5-fluorouracil (5FU)-based treatment. Recent studies have shown that long non-coding RNAs (lncRNAs) are critical regulators in chemoresistance. By using the next generation HiSeq sequencing assay, we identified lncRNAs showing differential expression levels in 5FU resistant and non-resistant CRC patients. RT-qPCR was then performed for validation in tissues and serum samples, and lncRNA XIST was verified to be up-regulated in non-responding patients and have considerable diagnostic potential to identify responding patients from non-responding patients. In addition, increased serum XIST level was associated with poor response and lower survival rate in CRC patients receiving 5FU-based treatment. Subsequently, the 5FU resistant (5FU-R) cell lines were established, and lncRNA XIST was significantly up-regulated HT29 5FU-R and HCT116 5FU-R cells. Furthermore, knockdown of XIST reversed 5FU resistance while enhanced XIST could restrained the 5FU-induced cell cytotoxcity in both CRC cell lines. Western blotting and immunofluorescence analysis indicated that XIST promoted the expression of thymidylate synthase, a critical 5FU-targetd enzyme. In conclusion, our integrated approach demonstrates that increased expression of lncRNA XIST3 in CRC confers a potent poor therapeutic efficacy, and that lncRNA XIST participated in 5FU resistance through promoting the expression of thymidylate synthase. Thus, specific silence oflncRNA XIST could be a future direction to develop a novel therapeutic strategy to overcome 5FU resistance of CRC patients.
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Affiliation(s)
- Yang Xiao
- Department of Surgery and Transplantology, P. L. Shupyk National Medical Academy of Postgraduate Education, Kyiv, Ukraine
| | - Usenko Alexander Yurievich
- Department of Surgery and Transplantology, P. L. Shupyk National Medical Academy of Postgraduate Education, Kyiv, Ukraine
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19
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Li P, Zhang X, Wang L, Du L, Yang Y, Liu T, Li C, Wang C. lncRNA HOTAIR Contributes to 5FU Resistance through Suppressing miR-218 and Activating NF-κB/TS Signaling in Colorectal Cancer. MOLECULAR THERAPY. NUCLEIC ACIDS 2017; 8:356-369. [PMID: 28918035 PMCID: PMC5537205 DOI: 10.1016/j.omtn.2017.07.007] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 07/06/2017] [Accepted: 07/06/2017] [Indexed: 12/30/2022]
Abstract
One major reason for the failure of advanced colorectal cancer (CRC) treatment is the occurrence of chemoresistance to fluoropyrimidine (FU)-based chemotherapy. Long non-coding RNA HOTAIR has been considered as a pro-oncogene in multiple cancers. However, the precise functional mechanism of HOTAIR in chemoresistance is not well known. In this study, we investigated the biological and clinical role of HOTAIR in 5FU resistance in CRC. Our results showed that HOTAIR negatively regulated miR-218 expression in CRC through an EZH2-targeting miR-218-2 promoter regulatory axis. HOTAIR knockdown dramatically inhibited cell viability and induced G1-phase arrest by promoting miR-218 expression. VOPP1 was shown to be a functional target of miR-218, and the main downstream signaling, NF-κB, was inactivated by HOTAIR through the suppression of miR-218 expression. Additionally, HOTAIR knockdown partially reversed 5FU resistance through promoting miR-218 and inactivating NF-κB signaling. Furthermore, HOTAIR restrained 5FU-induced cytotoxicity on CRC cells through promotion of thymidylate synthase expression. More importantly, high HOTAIR expression was associated with poor response to 5FU treatment. In conclusion, we demonstrated that HOTAIR contributes to 5FU resistance through suppressing miR-218 and activating NF-κB signaling in CRC. Thus, HOTAIR may serve as a promising therapeutic target for CRC patients.
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Affiliation(s)
- Peilong Li
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, 250033 Shandong Province, China
| | - Xin Zhang
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan, 250012 Shandong Province, China
| | - Lili Wang
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan, 250012 Shandong Province, China
| | - Lutao Du
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan, 250012 Shandong Province, China
| | - Yongmei Yang
- Department of Clinical Laboratory, Qilu Hospital, Shandong University, Jinan, 250012 Shandong Province, China
| | - Tong Liu
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, 250033 Shandong Province, China
| | - Chen Li
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, 250033 Shandong Province, China
| | - Chuanxin Wang
- Department of Clinical Laboratory, The Second Hospital of Shandong University, Jinan, 250033 Shandong Province, China.
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20
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Chen W, Xu XK, Li JL, Kong KK, Li H, Chen C, He J, Wang F, Li P, Ge XS, Li FC. MALAT1 is a prognostic factor in glioblastoma multiforme and induces chemoresistance to temozolomide through suppressing miR-203 and promoting thymidylate synthase expression. Oncotarget 2017; 8:22783-22799. [PMID: 28187000 PMCID: PMC5410262 DOI: 10.18632/oncotarget.15199] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 01/22/2017] [Indexed: 02/07/2023] Open
Abstract
Glioblastoma multiforme (GBM) is the most malignant brain tumor with limited therapeutic options. Temozolomide (TMZ) is a novel cytotoxic agent used as first-line chemotherapy for GBM, however, some individual cells can't be isolated for surgical resection and show treatment-resistance, thus inducing poor prognosis. By using the HiSeq sequencing and bioinformatics methods, we identified lncRNAs showing different expression levels in TMZ-resistant and non-resistant patients. RT-qPCR was then performed in tissues and serum samples, and lncRNA MALAT1 was finally identified to show considerable discriminating potential to identify responding patients from non-responding patients. Moreover, high serum MALAT1 expression was associated with poor chemoresponse and survival in GBM patients receiving TMZ treatment. Subsequently, the TMZ resistant cell lines were established, and the CCK8 assay showed that lncRNA MALAT1 knockdown significantly reversed TMZ resistance in GBM cells. The gain and loss-function experiments revealed that miR-203 was down-regulated by MALAT1 and this interaction has reciprocal effects. Besides, thymidylate synthase (TS) mRNA was identified as a direct target of miR-203. LncRNA MALAT1 inhibition re-sensitized TMZ resistant cells through up-regulating miR-203 and down-regulating TS expression. On the other hand, MALAT1 overexpression promoted resistance by suppressing miR-203 and promoting TS expression. In conclusion, our integrated approach demonstrates that enhanced expression of lncRNA MALAT1 confers a potent poor therapeutic efficacy and inhibition of MALAT1 levels could be a future direction to develop a novel therapeutic strategy to overcome TMZ resistance in GBM patients.
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Affiliation(s)
- Wei Chen
- 1 Department of Neurosurgery, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
- 2 Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China
- 3 State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, Wuhan, 430071, China
| | - Xin-Ke Xu
- 1 Department of Neurosurgery, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Jun-Liang Li
- 1 Department of Neurosurgery, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
- 2 Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China
| | - Kuan-Kei Kong
- 1 Department of Neurosurgery, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
- 2 Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China
| | - Hui Li
- 4 Department of Respiratory, The First People's Hospital of Foshan, Sun Yat-Sen University, Guangdong Foshan 528000, China
| | - Cheng Chen
- 1 Department of Neurosurgery, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Jing He
- 1 Department of Neurosurgery, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Fangyu Wang
- 1 Department of Neurosurgery, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Ping Li
- 1 Department of Neurosurgery, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
| | - Xiao-Song Ge
- 5 Department of Oncology, The Affiliated Hospital of Jiangnan University, Wuxi 214062, Jiangsu, China
| | - Fang-Cheng Li
- 1 Department of Neurosurgery, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, China
- 2 Department of Neurosurgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, China
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21
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Structural basis of the substrate preference towards CMP for a thymidylate synthase MilA involved in mildiomycin biosynthesis. Sci Rep 2016; 6:39675. [PMID: 28000775 PMCID: PMC5175136 DOI: 10.1038/srep39675] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 11/25/2016] [Indexed: 11/08/2022] Open
Abstract
Modified pyrimidine monophosphates such as methyl dCMP (mdCMP), hydroxymethyl dUMP (hmdUMP) and hmdCMP in some phages are synthesized by a large group of enzymes termed as thymidylate synthases (TS). Thymidylate is a nucleotide required for DNA synthesis and thus TS is an important drug target. In the biosynthetic pathway of the nucleoside fungicide mildiomycin isolated from Streptomyces rimofaciens ZJU5119, a cytidylate (CMP) hydroxymethylase, MilA, catalyzes the conversion of CMP into 5′-hydroxymethyl CMP (hmCMP) with an efficiency (kcat/KM) of 5-fold faster than for deoxycytidylate (dCMP). MilA is thus the first enzyme of the TS superfamily preferring CMP to dCMP. Here, we determined the crystal structures of MilA and its complexes with various substrates including CMP, dCMP and hmCMP. Comparing these structures to those of dCMP hydroxymethylase (CH) from T4 phage and TS from Escherichia coli revealed that two residues in the active site of CH and TS, a serine and an arginine, are respectively replaced by an alanine and a lysine, Ala176 and Lys133, in MilA. Mutation of A176S/K133R of MilA resulted in a reversal of substrate preference from CMP to dCMP. This is the first study reporting the evolution of the conserved TS in substrate selection from DNA metabolism to secondary nucleoside biosynthesis.
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Sapienza PJ, Lee AL. Widespread Perturbation of Function, Structure, and Dynamics by a Conservative Single-Atom Substitution in Thymidylate Synthase. Biochemistry 2016; 55:5702-5713. [PMID: 27649373 DOI: 10.1021/acs.biochem.6b00838] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Thymidylate synthase (TSase) is responsible for synthesizing the sole de novo source of dTMP in all organisms. TSase is a drug target, and as such, it has been well studied in terms of both structure and reaction mechanism. Cysteine 146 in Escherichia coli TSase is universally conserved because it serves as the nucleophile in the enzyme mechanism. Here we use the C146S mutation to probe the role of the sulfur atom in early events in the catalytic cycle beyond serving as the nucleophile. Surprisingly, the single-atom substitution severely decreases substrate binding affinity, and the unfavorable ΔΔG°bind is comprised of roughly equal enthalpic and entropic components at 25 °C. Chemical shifts in the free and dUMP-bound states show the mutation causes perturbations throughout TSase, including regions important for complex stability, in agreement with a less favorable enthalpy change. We measured the nuclear magnetic resonance methyl symmetry axis order parameter (S2axis), a proxy for conformational entropy, for TSase at all vertices of the dUMP binding/C146S mutation thermodynamic cycle and found that the calculated TΔΔS°conf is similar in sign and magnitude to the calorimetric TΔΔS°. Further, we ascribed minor resonances in wild-type-dUMP spectra to a state with a covalent bond between Sγ of C146 and C6 of dUMP and find S2axis values are unaffected by covalent bond formation, indicating this reaction step is neutral with respect to ΔS°conf. Lastly, the C146S mutation allowed us to measure cofactor analog binding by isothermal titration calorimetry without the confounding heat signature of covalent bond formation. Raltitrexed binds free and singly bound TSase with similar affinities, yet the two binding events have different enthalpy changes, providing further evidence of communication between the two active sites.
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Affiliation(s)
- Paul J Sapienza
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
| | - Andrew L Lee
- Division of Chemical Biology and Medicinal Chemistry, UNC Eshelman School of Pharmacy, University of North Carolina at Chapel Hill , Chapel Hill, North Carolina 27599, United States
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Haider S, McIntyre A, van Stiphout RGPM, Winchester LM, Wigfield S, Harris AL, Buffa FM. Genomic alterations underlie a pan-cancer metabolic shift associated with tumour hypoxia. Genome Biol 2016; 17:140. [PMID: 27358048 PMCID: PMC4926297 DOI: 10.1186/s13059-016-0999-8] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 06/06/2016] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Altered metabolism is a hallmark of cancer. However, the role of genomic changes in metabolic genes driving the tumour metabolic shift remains to be elucidated. Here, we have investigated the genomic and transcriptomic changes underlying this shift across ten different cancer types. RESULTS A systematic pan-cancer analysis of 6538 tumour/normal samples covering ten major cancer types identified a core metabolic signature of 44 genes that exhibit high frequency somatic copy number gains/amplifications (>20 % cases) associated with increased mRNA expression (ρ > 0.3, q < 10(-3)). Prognostic classifiers using these genes were confirmed in independent datasets for breast and kidney cancers. Interestingly, this signature is strongly associated with hypoxia, with nine out of ten cancer types showing increased expression and five out of ten cancer types showing increased gain/amplification of these genes in hypoxic tumours (P ≤ 0.01). Further validation in breast and colorectal cancer cell lines highlighted squalene epoxidase, an oxygen-requiring enzyme in cholesterol biosynthesis, as a driver of dysregulated metabolism and a key player in maintaining cell survival under hypoxia. CONCLUSIONS This study reveals somatic genomic alterations underlying a pan-cancer metabolic shift and suggests genomic adaptation of these genes as a survival mechanism in hypoxic tumours.
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Affiliation(s)
- Syed Haider
- />Computational Biology and Integrative Genomics, Department of Oncology, University of Oxford, Oxford, UK
- />Molecular Oncology Laboratories, Department of Oncology, The Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Alan McIntyre
- />Molecular Oncology Laboratories, Department of Oncology, The Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Ruud G. P. M. van Stiphout
- />Computational Biology and Integrative Genomics, Department of Oncology, University of Oxford, Oxford, UK
| | - Laura M. Winchester
- />Computational Biology and Integrative Genomics, Department of Oncology, University of Oxford, Oxford, UK
- />Molecular Oncology Laboratories, Department of Oncology, The Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Simon Wigfield
- />Molecular Oncology Laboratories, Department of Oncology, The Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Adrian L. Harris
- />Molecular Oncology Laboratories, Department of Oncology, The Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Francesca M. Buffa
- />Computational Biology and Integrative Genomics, Department of Oncology, University of Oxford, Oxford, UK
- />Molecular Oncology Laboratories, Department of Oncology, The Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
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Wu S, Fesler A, Ju J. Implications of Circadian Rhythm Regulation by microRNAs in Colorectal Cancer. CANCER TRANSLATIONAL MEDICINE 2016; 2:1-6. [PMID: 27747302 PMCID: PMC5065106 DOI: 10.4103/2395-3977.177555] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
Aim To establish a connection between microRNA (miRNAs), circadian rhythm, and colorectal cancer patient survival. Methods Genomic and clinical data were extracted from The Cancer Genome Atlas (TCGA) colorectal cancer database, and the expression levels of candidate miRNAs and a set of circadian rhythm-related genes (Per1, Per2, Per3, Bmal1), and genes associated with chemosensitivity (thymidylate synthase, dihydrofolate reductase) were assessed for any correlations among their expression. In addition, survival analyses specific to different colorectal cancer stages were performed to determine if these genes contribute to patient outcomes. Results Significant inverse correlation between the expression of Per1 and that of miR-192 and miR-194 was observed. In survival analyses, high miR-192 and miR-194 correlate with better overall survival in Stage II patients, but worse survival in more advanced Stage III/IV patients. The expression of Per1, but Per2 or Bmal1, is marginally associated with patient survival for Stage II patients. Low thymidylate synthase expression correlates with better overall survival in Stage II patients but worse survival in Stage III/IV patients. Conclusion This study establishes a foundation based on a large genomic database of colorectal cancer, for further investigation into the importance of regulatory mechanisms of circadian rhythm by miRNAs in colorectal cancer.
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Affiliation(s)
- Song Wu
- Department of Applied Mathematics Statistics, College of Engineering and Applied Sciences, Stony Brook University, Stony Brook, NY, USA
| | - Andrew Fesler
- Department of Pathology, Translational Research Laboratory, School of Medicine, Stony Brook University, Stony Brook, NY, USA
| | - Jingfang Ju
- Department of Pathology, Translational Research Laboratory, School of Medicine, Stony Brook University, Stony Brook, NY, USA
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Okuma Y, Hosomi Y, Miyamoto S, Shibuya M, Okamura T, Hishima T. Correlation between S-1 treatment outcome and expression of biomarkers for refractory thymic carcinoma. BMC Cancer 2016; 16:156. [PMID: 26915359 PMCID: PMC4766615 DOI: 10.1186/s12885-016-2159-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 02/10/2016] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Thymic carcinoma is a rare cancer with minimal evidence of a survival benefit following chemotherapy. An oral fluoropyrimidine of S-1, however, is the recommended active cytotoxic chemotherapy agent for refractory thymic carcinoma based on a case series, whereas sunitinib or everolimus are recommended as molecular-targeted agents based on Phase II trials. We retrospectively investigated the efficacy of S-1 for refractory thymic carcinoma and performed a biomarker analysis. METHODS We assessed the clinicopathological variables of 14 consecutive patients who underwent S-1 for refractory thymic carcinoma and correlated the clinical outcomes with potential biomarkers using paraffin-embedded cancer tissues of eight patients in the cohort. RESULTS A total of 178 thymic malignancies were identified, of whom 14 patients included 12 cases of squamous cell carcinoma, one lymphoepithelioma-like carcinoma, and one undifferentiated carcinoma. Six patients exhibited a partial response (42.9 %: 95 % confidence interval [CI], 21.4-67.4) and the disease control rate was 85.7 % (60.0-96.0 %). After a median follow-up of 24.2 months, the median progression-free survival was 8.1 months (range, 2.6-12.2 months), and median overall survival was 30.0 months (range, 6.2-41.9 months). No significant correlation between biomarker expression and response was noted. However, thymidine synthase (TS)/dihydropyrimidine dehydrogenase and TS/orotate phosphoribosyltransferase were observed. CONCLUSIONS S-1 for refractory thymic carcinoma offered clinical activity and achieved an 85 % disease control rate. Although the biomarkers did not correlate with clinical outcome, the study results showed efficacy of S-1 as a cytotoxic chemotherapy for refractory thymic carcinoma, which warrants future investigation.
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Affiliation(s)
- Yusuke Okuma
- Department of Thoracic Oncology and Respiratory Medicine, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo, Tokyo, 113-8677, Japan.
- Division of Oncology, Research Center for Medical Sciences, The Jikei University School of Medicine, Minato, Tokyo, Japan.
| | - Yukio Hosomi
- Department of Thoracic Oncology and Respiratory Medicine, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo, Tokyo, 113-8677, Japan.
| | - Shingo Miyamoto
- Department of Clinical Oncology, Japan Red Cross Medical Center, Shibuya, Tokyo, Japan.
| | - Masahiko Shibuya
- Department of Thoracic Oncology and Respiratory Medicine, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo, Tokyo, 113-8677, Japan.
| | - Tatsuru Okamura
- Department of Thoracic Oncology and Respiratory Medicine, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, 3-18-22 Honkomagome, Bunkyo, Tokyo, 113-8677, Japan.
| | - Tsunekazu Hishima
- Department of Pathology, Tokyo Metropolitan Cancer and Infectious diseases Center Komagome Hospital, Bunkyo, Tokyo, Japan.
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Exploratory phase II trial in a multicenter setting to evaluate the clinical value of a chemosensitivity test in patients with gastric cancer (JACCRO-GC 04, Kubota memorial trial). Gastric Cancer 2016; 19:350-360. [PMID: 26385385 PMCID: PMC4824809 DOI: 10.1007/s10120-015-0506-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Accepted: 05/22/2015] [Indexed: 02/07/2023]
Abstract
BACKGROUND Although postoperative adjuvant chemotherapy with S-1, an oral fluoropyrimidine, has become a standard of care for gastric cancer in Japan, nonresponders may suffer from the cost and adverse reactions without clinical benefit. This multicenter exploratory phase II trial was conducted to see whether a chemosensitivity test, the collagen gel droplet embedded culture drug sensitivity test (CD-DST), can adequately select patients for chemotherapy. METHODS The CD-DST using four different concentrations of 5-fluorouracil was conducted with resected specimens from preregistered patients who underwent gastrectomy with D2 or more extensive lymphadenectomy. Patients who were histopathologically confirmed to have stage II or greater disease without distant metastasis were eligible for final enrollment. All patients underwent protocol-specified adjuvant chemotherapy with S-1. Three-year relapse-free survival was compared between patients determined as sensitive by the CD-DST (responders) and those deemed insensitive (nonresponders). Appropriate cutoff values for in vitro growth inhibition were defined when the hazard ratio for relapse in responders and the log-rank P values were at their minimum. RESULTS Of the 311 patients enrolled, 14 were ineligible and 27 failed to start the protocol treatment. The CD-DST failed in 64 other patients, and survival analyses were conducted with the remaining 206 patients (39 stage II disease, 155 stage III disease, and 12 stage IV disease). The outcome of patients who were determined to be responders was significantly superior to that of nonresponders regardless of the 5-fluorouracil concentrations, although no differences in clinicopathologic characteristics were observed between the two groups, except for age. CONCLUSIONS The CD-DST identified those who benefit from adjuvant chemotherapy. It deserves further evaluation in the setting of a prospective randomized trial. ClinicalTrials.gov identifier: NCT00287755.
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Wright KD, Daryani VM, Turner DC, Onar-Thomas A, Boulos N, Orr BA, Gilbertson RJ, Stewart CF, Gajjar A. Phase I study of 5-fluorouracil in children and young adults with recurrent ependymoma. Neuro Oncol 2015; 17:1620-7. [PMID: 26541630 PMCID: PMC4633933 DOI: 10.1093/neuonc/nov181] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 08/06/2015] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND We report a phase I study to examine the pharmacokinetics, safety, and recommended dosage of weekly intravenous bolus 5-fluorouracil (5-FU) in children and young adults with recurrent ependymoma. METHODS Patients 22 years of age or less with recurrent ependymoma were treated with bolus dosage 5-FU weekly for 4 weeks followed by a 2-week rest period, defining one cycle. Patients could continue on therapy for 16 cycles. The starting 5-FU dosage was 500 mg/m(2). Dose-limiting toxicity was determined after one cycle. Patients were initially enrolled according to a rolling-6 design; subsequent dose re-escalation phase was based on a 3 + 3 design. RESULTS We treated patients at 400 (n = 6), 500 (n = 15), and 650 (n = 5) mg/m(2), with de-escalation due to toxicity. Twenty-three of twenty-six patients enrolled were evaluable. Five patients experienced grade 4 neutropenia (n = 2: 650 mg/m(2); n = 3: 500 mg/m(2)). One patient experienced grade 3 diarrhea. At 500 mg/m(2), the median 5-FU maximal concentration, AUC0-∞, and alpha half-life were 825 µM, 205 µM × h, and 9.9 min, respectively. Interim analysis revealed an association between hematologic toxicity and prior number of chemotherapeutic regimens (P = .03). The study was amended to re-escalate the dosage in a less heavily pretreated cohort of patients. CONCLUSIONS These phase I clinical data provide initial pharmacokinetic parameters to describe i.v. bolus 5-FU disposition in children with recurrent ependymoma. Tumor exposures effective in preclinical testing can be achieved with tolerable bolus dosages in patients. Bolus 5-FU is well tolerated and possesses antitumor activity.
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Affiliation(s)
- Karen D Wright
- Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee (K.D.W., R.J.G., A.G.); Department of Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, Tennessee (V.M.D., D.C.T., C.F.S); Department of Biostatistics, St Jude Children's Research Hospital, Memphis, Tennessee (A.O.-T.); Department of Developmental Neurobiology, St Jude Children's Research Hospital, Memphis, Tennessee (N.B., R.J.G.); Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee (B.A.O.)
| | - Vinay M Daryani
- Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee (K.D.W., R.J.G., A.G.); Department of Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, Tennessee (V.M.D., D.C.T., C.F.S); Department of Biostatistics, St Jude Children's Research Hospital, Memphis, Tennessee (A.O.-T.); Department of Developmental Neurobiology, St Jude Children's Research Hospital, Memphis, Tennessee (N.B., R.J.G.); Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee (B.A.O.)
| | - David C Turner
- Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee (K.D.W., R.J.G., A.G.); Department of Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, Tennessee (V.M.D., D.C.T., C.F.S); Department of Biostatistics, St Jude Children's Research Hospital, Memphis, Tennessee (A.O.-T.); Department of Developmental Neurobiology, St Jude Children's Research Hospital, Memphis, Tennessee (N.B., R.J.G.); Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee (B.A.O.)
| | - Arzu Onar-Thomas
- Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee (K.D.W., R.J.G., A.G.); Department of Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, Tennessee (V.M.D., D.C.T., C.F.S); Department of Biostatistics, St Jude Children's Research Hospital, Memphis, Tennessee (A.O.-T.); Department of Developmental Neurobiology, St Jude Children's Research Hospital, Memphis, Tennessee (N.B., R.J.G.); Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee (B.A.O.)
| | - Nidal Boulos
- Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee (K.D.W., R.J.G., A.G.); Department of Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, Tennessee (V.M.D., D.C.T., C.F.S); Department of Biostatistics, St Jude Children's Research Hospital, Memphis, Tennessee (A.O.-T.); Department of Developmental Neurobiology, St Jude Children's Research Hospital, Memphis, Tennessee (N.B., R.J.G.); Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee (B.A.O.)
| | - Brent A Orr
- Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee (K.D.W., R.J.G., A.G.); Department of Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, Tennessee (V.M.D., D.C.T., C.F.S); Department of Biostatistics, St Jude Children's Research Hospital, Memphis, Tennessee (A.O.-T.); Department of Developmental Neurobiology, St Jude Children's Research Hospital, Memphis, Tennessee (N.B., R.J.G.); Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee (B.A.O.)
| | - Richard J Gilbertson
- Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee (K.D.W., R.J.G., A.G.); Department of Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, Tennessee (V.M.D., D.C.T., C.F.S); Department of Biostatistics, St Jude Children's Research Hospital, Memphis, Tennessee (A.O.-T.); Department of Developmental Neurobiology, St Jude Children's Research Hospital, Memphis, Tennessee (N.B., R.J.G.); Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee (B.A.O.)
| | - Clinton F Stewart
- Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee (K.D.W., R.J.G., A.G.); Department of Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, Tennessee (V.M.D., D.C.T., C.F.S); Department of Biostatistics, St Jude Children's Research Hospital, Memphis, Tennessee (A.O.-T.); Department of Developmental Neurobiology, St Jude Children's Research Hospital, Memphis, Tennessee (N.B., R.J.G.); Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee (B.A.O.)
| | - Amar Gajjar
- Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee (K.D.W., R.J.G., A.G.); Department of Pharmaceutical Sciences, St Jude Children's Research Hospital, Memphis, Tennessee (V.M.D., D.C.T., C.F.S); Department of Biostatistics, St Jude Children's Research Hospital, Memphis, Tennessee (A.O.-T.); Department of Developmental Neurobiology, St Jude Children's Research Hospital, Memphis, Tennessee (N.B., R.J.G.); Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee (B.A.O.)
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Expression of Ribonucleotide Reductase Subunit-2 and Thymidylate Synthase Correlates with Poor Prognosis in Patients with Resected Stages I-III Non-Small Cell Lung Cancer. DISEASE MARKERS 2015; 2015:302649. [PMID: 26663950 PMCID: PMC4664813 DOI: 10.1155/2015/302649] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 10/05/2015] [Accepted: 10/07/2015] [Indexed: 12/12/2022]
Abstract
Biomarkers can help to identify patients with early-stages or locally advanced non-small cell lung cancer (NSCLC) who have high risk of relapse and poor prognosis. To correlate the expression of seven biomarkers involved in DNA synthesis and repair and in cell division with clinical outcome, we consecutively collected 82 tumour tissues from radically resected NSCLC patients. The following biomarkers were investigated using IHC and qRT-PCR: excision repair cross-complementation group 1 (ERCC1), breast cancer 1 (BRCA1), ribonucleotide reductase subunits M1 and M2 (RRM1 and RRM2), subunit p53R2, thymidylate synthase (TS), and class III beta-tubulin (TUBB3). Gene expression levels were also validated in an available NSCLC microarray dataset. Multivariate analysis identified the protein overexpression of RRM2 and TS as independent prognostic factors of shorter overall survival (OS). Kaplan-Meier analysis showed a trend in shorter OS for patients with RRM2, TS, and ERCC1, BRCA1 overexpressed tumours. For all of the biomarkers except TUBB3, the OS trends relative to the gene expression levels were in agreement with those relative to the protein expression levels. The NSCLC microarray dataset showed RRM2 and TS as biomarkers significantly associated with OS. This study suggests that high expression levels of RRM2 and TS might be negative prognostic factors for resected NSCLC patients.
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A prognostic analysis of 895 cases of stage III colon cancer in different colon subsites. Int J Colorectal Dis 2015; 30:1173-83. [PMID: 26054387 DOI: 10.1007/s00384-015-2273-z] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/31/2015] [Indexed: 02/04/2023]
Abstract
PURPOSE Stage III colon cancer is currently treated as an entity with a unified therapeutic principle. The aim of the retrospective study is to explore the clinicopathological characteristics and outcomes of site-specific stage III colon cancers and the influences of tumor location on prognosis. METHODS Eight hundred ninety-five patients with stage III colon cancer treated with radical operation and subsequent adjuvant chemotherapy (5-fluorouracil/oxaliplatin) were divided into seven groups according to colon segment (cecum, ascending colon, hepatic flexure, transverse colon, splenic flexure, descending colon, and sigmoid colon). Expression of excision repair cross-complementing group 1 (ERCC1) and thymidylate synthase (TS) was examined by immunohistochemistry. We assessed if differences exist in patient characteristics and clinic outcomes between the seven groups. RESULTS There were significant differences in tumor differentiation (P < 0.001), T stage (P < 0.001), N stage (P < 0.001), American Joint Committee on Cancer (AJCC) tumor-node-metastasis (TNM) stage (P < 0.001), metachronous liver metastasis (P < 0.001), metachronous lung metastasis (P < 0.001), and ERCCI expression (P < 0.001) between the seven groups. Both 5-year recurrence-free survival (RFS) and 5-year overall survival (OS) exhibited significant differences (both P < 0.001) with survival gradually decreasing from cecum to sigmoid colon. Cox regression analyses identified that tumor location was an independent prognostic factor for RFS and OS. CONCLUSIONS Stage III colon cancer located proximally carried a poorer survival than that located distally. Different efficacies of FOLFOX adjuvant chemotherapy may be an important factor affecting survival of site-specific stage III colon cancers.
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Gustavsson B, Carlsson G, Swartling T, Kurlberg G, Derwinger K, Björkqvist H, Odin E, Gibson F. Phase 1 dose de-escalation trial of the endogenous folate [6R]-5,10-methylene tetrahydrofolate in combination with fixed-dose pemetrexed as neoadjuvant therapy in patients with resectable rectal cancer. Invest New Drugs 2015; 33:1078-85. [PMID: 26189513 PMCID: PMC4768212 DOI: 10.1007/s10637-015-0272-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Accepted: 07/07/2015] [Indexed: 01/04/2023]
Abstract
Background Modufolin® ([6R]-5,10-methylene tetrahydrofolate; [6R]-MTHF) is an endogenous biomodulator that is being developed as an alternative to leucovorin, a folate prodrug used in the treatment of colorectal cancer. The objective of this phase 1 dose de-escalation trial was to estimate the minimum tolerated dose of [6R]-MTHF to be used in combination with pemetrexed 500 mg/m2 in the neoadjuvant treatment of patients with rectal cancer. Methods Adult patients (≥18 years) with resectable rectal adenocarcinoma were allocated to [6R]-MTHF doses of 500, 100, 50, and 10 mg/m2 in combination with pemetrexed 500 mg/m2. [6R]-MTHF was administered as an intravenous (i.v.) bolus injection 1 week prior to the first dose of pemetrexed and then once weekly for 9 weeks; pemetrexed was administered by i.v. infusion once every 21 days for three cycles. Results Twenty-four patients (mean [SD] age, 63.1 [12.9] years) were enrolled in the study. A total of 72 treatment-related adverse events (AEs) were reported, of which the most common were fatigue (n = 17; 23.6 %), nausea (n = 10; 13.9 %), and diarrhea (n = 5; 6.9 %). The incidence of treatment-related AEs by [6R]-MTHF dose level (500, 100, 50, 10 mg/m2) was 11.1 % (n = 8), 13.9 % (n = 10), 45.8 % (n = 33), and 29.2 % (n = 21), respectively. There were no dose-limiting toxicities, and only two (2.8 %) treatment-related AEs were grade 3 in severity. Of the 11 serious AEs reported, none were considered to be related to [6R]-MTHF treatment. Conclusions The results of this phase 1 study indicate that the estimated minimum tolerated dose of [6R]-MTHF was 100 mg/m2 once weekly in combination with pemetrexed 500 mg/m2. The low toxicity profile of [6R]-MTHF supports its further evaluation as a component of systemic chemotherapy in the management of colon and rectal cancer.
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Affiliation(s)
- Bengt Gustavsson
- Department of Surgery, University of Gothenburg, Sahlgrenska University Hospital/Östra Institute of Clinical Sciences, Gothenburg, Sweden
| | - Göran Carlsson
- Department of Surgery, University of Gothenburg, Sahlgrenska University Hospital/Östra Institute of Clinical Sciences, Gothenburg, Sweden
| | - Torbjörn Swartling
- Department of Surgery, University of Gothenburg, Sahlgrenska University Hospital/Östra Institute of Clinical Sciences, Gothenburg, Sweden
| | - Göran Kurlberg
- Department of Surgery, University of Gothenburg, Sahlgrenska University Hospital/Östra Institute of Clinical Sciences, Gothenburg, Sweden
| | - Kristoffer Derwinger
- Department of Surgery, University of Gothenburg, Sahlgrenska University Hospital/Östra Institute of Clinical Sciences, Gothenburg, Sweden
| | - Hillevi Björkqvist
- Department of Surgery, University of Gothenburg, Sahlgrenska University Hospital/Östra Institute of Clinical Sciences, Gothenburg, Sweden
| | - Elisabeth Odin
- Department of Surgery, University of Gothenburg, Sahlgrenska University Hospital/Östra Institute of Clinical Sciences, Gothenburg, Sweden
| | - Fernando Gibson
- PharmaGenesis London, 9 Whitehall, 4th Floor, London, SW1A 2DD, UK.
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Chen Y, Shen Z. Gene polymorphisms in the folate metabolism and their association with MTX-related adverse events in the treatment of ALL. Tumour Biol 2015; 36:4913-21. [PMID: 26022160 DOI: 10.1007/s13277-015-3602-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Accepted: 05/20/2015] [Indexed: 01/22/2023] Open
Abstract
The antifolate drug methotrexate (MTX) is widely used in the treatment of various neoplastic diseases, including acute lymphoblastic leukemia (ALL). MTX significantly increases cure rates and improves patients' prognosis. Despite that it achieved remarkable clinical success, a large number of patients still suffer from treatment toxicities or side effects. Even to this date, chemotherapeutic regiments have not been personalized because of interindividual differences that affect MTX response, especially polymorphisms in key genes. The pharmacological pathway of MTX in cells is useful to identify gene polymorphisms that influence the process of treatment. The aim of this review was to discuss the gene polymorphisms of drug-metabolizing enzymes in the MTX pathway and their toxicities on ALL treatment.
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Affiliation(s)
- Yang Chen
- Centre of Clinical Laboratory, Anhui Provincial Hospital Affiliated of Anhui Medical University, Hefei, 230001, China
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Subbarayan PR, Ardalan B. In the war against solid tumors arsenic trioxide needs partners. J Gastrointest Cancer 2015; 45:363-71. [PMID: 24825822 DOI: 10.1007/s12029-014-9617-8] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
In the past decade, the therapeutic potential of arsenic trioxide (ATO) in the treatment of acute promyelocytic leukemia (APL) was recognized. This encouraged other investigators to test the efficacy of ATO in the management of other hematological and solid tumor malignancies. Notably, as a single agent, arsenic trioxide did not benefit patients diagnosed with solid tumors. However, when it was combined with other agents, treatment benefit emerged. In this article, we have summarized the outcome of clinical trials that used arsenic trioxide as a single agent as well as in combination settings in patients diagnosed with solid tumors. We have also reviewed possible additional mechanisms by which ATO may be useful as a chemosensitizer in combination therapy. We hope that our review will encourage clinical investigators to rationally combine ATO with additional chemotherapeutic agents in treating patients diagnosed with solid tumors.
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Affiliation(s)
- Pochi R Subbarayan
- Department of Medicine, University of Miami Miller School of Medicine, 1550 NW 10th Avenue, FOX 431A, Miami, FL, 33136, USA
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Sasako M, Terashima M, Ichikawa W, Ochiai A, Kitada K, Kurahashi I, Sakuramoto S, Katai H, Sano T, Imamura H. Impact of the expression of thymidylate synthase and dihydropyrimidine dehydrogenase genes on survival in stage II/III gastric cancer. Gastric Cancer 2015; 18:538-48. [PMID: 25112781 PMCID: PMC4511074 DOI: 10.1007/s10120-014-0413-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 07/22/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND The efficacy of 5-fluorouracil (5FU)-based therapy, which remains the cornerstone of gastrointestinal cancer treatment, depends upon the expression of enzymes involved in pyrimidine metabolism, including thymidylate synthase (TS), dihydropyrimidine dehydrogenase (DPD), thymidine phosphorylase (TP), and orotate phosphoribosyltransferase (OPRT). We analyzed the expression of these genes in patients enrolled in the Adjuvant Chemotherapy Trial of S-1 for Gastric Cancer (ACTS-GC) and their possible roles as biomarkers for treatment outcomes. METHODS Formalin-fixed, paraffin-embedded specimens were available for 829 of a total of 1,059 (78.3 %) patients. TS, DPD, TP, and OPRT expression was measured by RT-PCR in manually microdissected tumor specimens and normalized to the reference gene, β-actin. The expression level of each gene was categorized as low or high using cutoffs at the 33.3rd, 50th, or 66.7th percentiles. RESULTS The hazard ratio (HR) for overall survival (OS) after S-1 treatment versus surgery alone was significantly lower in high (>66.7th percentile; HR = 0.370; 95 % CI 0.221-0.619) compared to low (<66.7th percentile; HR = 0.757; 95 % CI 0.563-1.018) TS expression groups (P = 0.015). Similarly, the HR for OS after S-1 therapy versus surgery alone was significantly lower in high (>33.3rd percentile; HR = 0.520, 95 % CI 0.376-0.720) compared to low (<33.3rd percentile; HR = 0.848, 95 % CI 0.563-1.276) DPD expression groups (P = 0.065). There was no interaction between TP or OPRT expression and OS. CONCLUSIONS This large biomarker study showed that high TS and DPD gene expression in tumors was associated with enhanced benefit from postoperative adjuvant S-1 treatment in gastric cancer. There was no interaction between TP and OPRT expression and S-1 treatment.
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Affiliation(s)
- Mitsuru Sasako
- Department of Surgery, Hyogo College of Medicine, 1-1 Mukogawa-cho, Nishinomiya, Hyogo, 663-8501, Japan,
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Zhao HY, Ma GW, Zou BY, Li M, Lin SX, Zhao LP, Guo Y, Huang Y, Tian Y, Xie D, Zhang L. Prognostic significance of thymidylate synthase in postoperative non-small cell lung cancer patients. Onco Targets Ther 2014; 7:1301-10. [PMID: 25114572 PMCID: PMC4109640 DOI: 10.2147/ott.s65067] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The aim of the present study was to investigate the clinicopathologic/prognostic significance of thymidylate synthase (TS), orotate phosphoribosyltransferase (OPRT), and thymidine phosphorylase (TP) proteins in postoperative non-small cell lung cancer (NSCLC) patients. Microarray slides from a set of 178 NSCLC patients were used for the detection of TS, OPRT, and TP expression by immunohistochemistry. The correlation between clinicopathologic factors and protein expression of three proteins was analyzed. Ninety seven carcinomas (57.4%) were TS-positive, 90 carcinomas (53.9%) were OPRT-positive, and 102 carcinomas (69.4%) were TP-positive. Compared with the TS-positive patients, the overall survival (OS) was significantly lower in the TS-negative patients (hazard ratio [HR] =1.766, 95% confidence interval [CI] =1.212–2.573, P=0.003). Significant differences between TS-positive and TS-negative patients was also observed in the following stratified analyses: 1) adenocarcinoma subgroup (HR =2.079, 95% CI =1.235–3.500, P=0.006); 2) less than 60-year-old subgroup (HR =1.890, 95% CI =1.061–3.366, P=0.031); 3) stage II/III subgroup (HR =1.594, 95% CI =1.036–2.453, P=0.034); and 4) surgery plus adjuvant therapy subgroup (HR =1.976, 95% CI =1.226–3.185, P=0.005). However, the OS was not significantly correlated with OPRT or TP protein expression. This study demonstrates that the TS level in tumor tissues may be a useful marker to predict the postoperative OS in NSCLC patients.
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Affiliation(s)
- Hong-Yun Zhao
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
| | - Guo-Wei Ma
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
| | - Ben-Yan Zou
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
| | - Mei Li
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
| | - Su-Xia Lin
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
| | - Li-Ping Zhao
- Department of Medical Oncology, Zhongshan Hospital of Sun Yat-Sen University, Zhongshan People's City Hospital, Zhongshan, People's Republic of China
| | - Ying Guo
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
| | - Yan Huang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
| | - Ying Tian
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
| | - Dan Xie
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
| | - Li Zhang
- Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, People's Republic of China
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Li P, Kang X, Chen K. [Clinical significance of ERCC1, RRM1 and TS in non-small cell lung cancer]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2014; 17:496-500. [PMID: 24949692 PMCID: PMC6000105 DOI: 10.3779/j.issn.1009-3419.2014.06.11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Pei Li
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department I of Thoracic Surgery,
Peking University Cancer Hospital, Beijing 100142, China
| | - Xiaozheng Kang
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department I of Thoracic Surgery,
Peking University Cancer Hospital, Beijing 100142, China
| | - Keneng Chen
- Key laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department I of Thoracic Surgery,
Peking University Cancer Hospital, Beijing 100142, China
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Yamashita T, Kato K, Long NK, Makita H, Yonemoto K, Iida K, Tamaoki N, Hatakeyama D, Shibata T. Effects of smoking and alcohol consumption on 5-fluorouracil-related metabolic enzymes in oral squamous cell carcinoma. Mol Clin Oncol 2014; 2:429-434. [PMID: 24772313 DOI: 10.3892/mco.2014.267] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 02/18/2014] [Indexed: 11/05/2022] Open
Abstract
Lifestyle, particularly smoking and alcohol consumption, may induce and/or inhibit drug metabolism. In order to reveal the effects of smoking and alcohol consumption on the 5-fluorouracil (5-FU)-related metabolic enzymes, namely thymidylate synthase, dihydropyrimidine dehydrogenase (DPD; a sole catabolic enzyme of 5-FU), orotate phosphoribosyl transferase (OPRT) and thymidine phosphorylase, in oral squamous cell carcinomas, the mRNA expression of these enzymes was investigated in 29 surgical specimens and compared by the Brinkman index and drinking years. The surgical specimens were divided into normal and tumor regions and were independently analyzed using quantitative reverse transcription-polymerase chain reaction. There was a significantly positive correlation between DPD mRNA expression in these tissues and Brinkman index/drinking years, with OPRT mRNA expression being significantly correlated to the Brinkman index in tumor tissues. These results revealed that lifestyle habits, including smoking and alcohol consumption, may vary the activity of the 5-FU-related metabolic enzymes. DPD is the initial and rate-limiting enzyme in the catabolic pathway of 5-FU. Therefore, smoking and alcohol consumption may reduce the anticancer activity of 5-FU, possibly through the induction of DPD activity.
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Affiliation(s)
- Tomomi Yamashita
- Department of Dentistry and Oral Surgery, Kouseiren Takaoka Hospital, Takaoka, Toyama 933-8555; ; Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Gifu University, Gifu, Gifu 501-1194, Japan
| | - Keizo Kato
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Gifu University, Gifu, Gifu 501-1194, Japan
| | - Nguyen Khanh Long
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Gifu University, Gifu, Gifu 501-1194, Japan
| | - Hiroki Makita
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Gifu University, Gifu, Gifu 501-1194, Japan
| | - Kazuhiro Yonemoto
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Gifu University, Gifu, Gifu 501-1194, Japan
| | - Kazuki Iida
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Gifu University, Gifu, Gifu 501-1194, Japan
| | - Naritaka Tamaoki
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Gifu University, Gifu, Gifu 501-1194, Japan
| | - Daijiro Hatakeyama
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Gifu University, Gifu, Gifu 501-1194, Japan
| | - Toshiyuki Shibata
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine, Gifu University, Gifu, Gifu 501-1194, Japan
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Thymidylate synthase polymorphisms are associated to therapeutic outcome of advanced non-small cell lung cancer patients treated with platinum-based chemotherapy. Mol Biol Rep 2014; 41:3349-57. [PMID: 24554028 DOI: 10.1007/s11033-014-3197-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2013] [Accepted: 01/24/2014] [Indexed: 12/11/2022]
Abstract
Thymidylate synthase (TYMS) has three polymorphisms that may modulate thymidylate synthase (TS) expression levels: (1) 28 base pairs (bp) variable number tandem repeat (VNTR) (rs34743033); (2) single nucleotide polymorphism (SNP) C>G at the twelfth nucleotide of the second repeat of 3R allele (rs2853542); and (3) 6 bp sequence deletion (1494del6, rs34489327). This study was conducted to evaluate the influence of TYMS polymorphisms on the survival of Portuguese patients with advanced non-small cell lung cancer (NSCLC) undergoing platinum-based chemotherapy. Our results showed no statistically significant differences between VNTR genotypes; although, considering the SNP C>G, homozygotes 3RG presented a better prognostic at 36 months (p=0.004) and overall survival (p=0.003) when compared to 2R3RG patients. Patients with "median/high expression genotypes" demonstrated a better survival at 12 months (p=0.041) when compared to "low expression genotypes". Furthermore, 6 bp- carriers (p=0.006) showed a better survival at 12 months when compared to 6 bp+ homozygotes patients. When analyzing TYMS haplotypes, better survival at 12 months was observed for patients carrying haplotypes with the 6 bp- allele (2R6 bp-; p=0.026 and 3RG6 bp-; p=0.045). This is the first report that evaluates the three major TYMS polymorphisms in the therapeutic outcome of NSCLC in Portugal. According to our results, the TYMS polymorphisms may be useful tools to predict which advanced NSCLC patients could benefit more from platinum-based chemotherapy regimens.
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Kodidela S, Suresh Chandra P, Dubashi B. Pharmacogenetics of methotrexate in acute lymphoblastic leukaemia: why still at the bench level? Eur J Clin Pharmacol 2013; 70:253-60. [PMID: 24370659 DOI: 10.1007/s00228-013-1623-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2013] [Accepted: 11/27/2013] [Indexed: 12/28/2022]
Abstract
PURPOSE The antifolate drug methotrexate (MTX) was introduced into clinical practice about 60 years ago and remains an important component of different acute lymphoblastic leukemia (ALL) treatment protocols. It acts by inhibiting several enzymes in the folate pathway, thereby resulting in the disruption of folate homeostasis. To date, treatment regimens have not been personalized despite there being experimental evidence that gene polymorphisms of folate metabolizing enzymes affect MTX response. The aim of this review was to evaluate the influence of genetic polymorphisms of the enzymes involved in the MTX pathway on ALL treatment outcomes and identify factors underlining the failure to personalize MTX therapy. METHODS We conducted a literature search in PUBMED and Google Scholar using the following key words: methotrexate, polymorphism, acute lymphoblastic leukemia, pharmacogenetics, pharmacogenomics and personalized medicine. RESULTS The reasons for the failure to personalize MTX therapy may be due to (1) most studies involving single-center, small-sized cohorts, (2) differences in MTX dose across different protocols, (3) failure to consider minimal residual disease as a risk factor for post-induction treatment, (4) differences in outcome criteria between studies and (5) failure to consider the folate levels of a patient before initiation of MTX therapy. Although high-throughput techniques allow the mapping of thousands of genetic polymorphisms in a single run, it remains a major challenge to dissect out folate-metabolizing enzymes which have a high impact on the efficacy and toxicity of MTX and which, therefore, could be the targets for intervention. CONCLUSIONS Prospective pharmacogenetic studies which consider all of the above-mentioned factors should be undertaken to facilitate the design of personalized MTX treatment for ALL patients.
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Affiliation(s)
- Sunitha Kodidela
- Department of Pharmacology, Jawaharlal Institute of Medical Education and Research (JIPMER), Puducherry, India,
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Nelson VM, Benson AB. Pathological complete response after neoadjuvant therapy for rectal cancer and the role of adjuvant therapy. Curr Oncol Rep 2013; 15:152-61. [PMID: 23381584 DOI: 10.1007/s11912-013-0297-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Both the addition of neoadjuvant chemoradiation therapy and improvements in surgical techniques have improved local control and overall survival for locally advanced rectal cancer patients over the past few decades. The addition of adjuvant chemotherapy has likely improved outcomes as well, though the contribution has been more difficult to quantify. At present, the majority of resected locally advanced rectal cancer patients receive adjuvant chemotherapy, though there is great variability in this practice based on both patient and institution characteristics. Recently, questions have been raised regarding which sub-groups of patients benefit most from adjuvant chemotherapy. As pathologic complete response (pCR) is increasingly found to be a reasonable surrogate for long-term favorable outcomes, some have questioned the need for adjuvant therapy in this select group of patients. Multiple retrospective analyses have shown minimal to no benefit for adjuvant chemotherapy in this group. Indeed, the patients most consistently shown to benefit from adjuvant therapy both in terms of disease free survival (DFS) and overall survival (OS) are those who achieve an intermediate pathologic response to neoadjuvant treatment. Tumors that have high expression of thymidylate synthetase have also shown to benefit from adjuvant therapy. More study is needed into clinical and molecular features that predict patient benefit from adjuvant therapy.
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Affiliation(s)
- Valerie M Nelson
- Hematology/Oncology, Department of Medicine, Feinberg School of Medicine, Robert H. Lurie Comprehensive Cancer Center, Northwestern University, Chicago, IL 60601, USA
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Sulzyc-Bielicka V, Bielicki D, Binczak-Kuleta A, Kaczmarczyk M, Pioch W, Machoy-Mokrzynska A, Ciechanowicz A, Gołębiewska M, Drozdzik M. Thymidylate synthase gene polymorphism and survival of colorectal cancer patients receiving adjuvant 5-fluorouracil. Genet Test Mol Biomarkers 2013; 17:799-806. [PMID: 23968134 DOI: 10.1089/gtmb.2013.0171] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Limited studies indicate a possible association of 5'-UTR thymidylate synthase enhancer region polymorphism and treatment outcome in patients medicated with 5-fluorouracil (5-FU). The study was designed to verify the relationship in patients with colorectal cancer (CRC), a Polish population that received 5-FU-based adjuvant chemotherapy. The study analyzed 145 Astler-Coller B2 and C CRC patients. Genotyping for a variable number of tandem repeats and G to C single-nucleotide polymorphism in the 5'-UTR of the thymidylate synthase (TS) gene was carried out. TS genotypes were classified into high expression (high TS) and low expression types (low TS). High TS was found in 22.8% of patients. The right-side tumors were more frequently associated with high TS than the left-side tumors (p=0.024). High TS was only found in 9.3% of rectal tumors, but in 29.7% of colon cancers (p=0.0042). Disease-free survival after 20 months (DFS 20) was longer in subjects with low TS than in high TS (p=0.043). Patients who underwent chemotherapy had longer DFS 20 in the low TS than in the high TS subgroup (p=0.051). The low TS was found to be an independent good prognostic factor for DFS 20 in the whole group as well as in the subgroup treated with chemotherapy (p=0.024 and p=0.034, respectively). Patients with low TS did not show any differences in DFS 20 whether they were treated with adjuvant chemotherapy or not. Proximal CRC tumors are characterized by higher TS expression genotypes than distal tumors, and are at significantly greater risk of early recurrence during the first 20 months after surgery.
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Gotanda K, Hirota T, Matsumoto N, Ieiri I. MicroRNA-433 negatively regulates the expression of thymidylate synthase (TYMS) responsible for 5-fluorouracil sensitivity in HeLa cells. BMC Cancer 2013; 13:369. [PMID: 23915286 PMCID: PMC3750578 DOI: 10.1186/1471-2407-13-369] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Accepted: 08/01/2013] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Thymidylate synthase (TYMS) is an important folate-dependent enzyme in DNA synthesis and an important target for cancer chemotherapy. High TYMS expression levels in tumors are generally associated with resistance to 5-fluorouracil (5-FU). The cause of the variability in TYMS expression is still not fully understood, however, only a small proportion of the TYMS expression can be explained by TYMS genetic polymorphisms. The purpose of this study is to identify novel microRNAs (miRNAs) which regulate the expression of TYMS and to determine whether miRNAs binding to the 3'-untranslated region (UTR) of TYMS mRNA affect the proliferation of HeLa cells treated with 5-FU. METHODS An in silico search was performed to find potential binding sites of miRNAs in TYMS mRNA. The efficacy of predicted miRNAs at the 3'-UTR of TYMS mRNA was evaluated using a dual-luciferase reporter assay. TYMS mRNA and protein expression in HeLa cells was quantified with real-time RT-PCR and Western blotting, respectively. The effects of miR-433 on cell proliferative activity were determined by WST-8 assay. RESULTS The overexpression of miR-433 was associated with significantly decreased reporter activity in the plasmid containing the 3'-UTR of TYMS mRNA (P < 0.01). The levels of TYMS mRNA and protein in HeLa cells were significantly decreased by the overexpression of miR-433 (P < 0.05). Furthermore, miR-433 increased inhibition of cell proliferation in HeLa cells treated with 5-FU at over 2.0 μM. CONCLUSION The results indicate that miR-433 post-transcriptionally regulates the expression of TYMS mRNA and protein, and increases sensitivity to 5-FU in HeLa cells. This is the first report showing that a miRNA regulating TYMS expression has a significant impact on sensitivity to 5-FU treatment.
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Abstract
Resistance to fluoropyrimidine-based chemotherapy is the major reason for the failure of advanced colorectal cancer (CRC) treatment. The lack of ability of tumor cells to undergo apoptosis after genotoxic stress is the key contributor to this intrinsic mechanism. Mounting evidence has demonstrated that non-coding microRNAs (miRNAs) are crucial regulators of gene expression, in particular, under acute genotoxic stress. However, there is still limited knowledge about the role of miRNAs in apoptosis. In this study, we discovered a novel mechanism mediated by microRNA-129 (miR-129) to trigger apoptosis by suppressing a key anti-apoptotic protein, B-cell lymphoma 2 (BCL2). Ectopic expression of miR-129 promoted apoptosis, inhibited cell proliferation and caused cell-cycle arrest in CRC cells. The intrinsic apoptotic pathway triggered by miR-129 was activated by cleavage of caspase-9 and caspase-3. The expression of miR-129 was significantly downregulated in CRC tissue specimens compared with the paired normal control samples. More importantly, we demonstrated that miR-129 enhanced the cytotoxic effect of 5-fluorouracil both in vitro and in vivo. These results suggest that miR-129 has a unique potential as a tumor suppressor and a novel candidate for developing miR-129-based therapeutic strategies in CRC.
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Wu SY, Chen TM, Gmeiner WH, Chu E, Schmitz JC. Development of modified siRNA molecules incorporating 5-fluoro-2'-deoxyuridine residues to enhance cytotoxicity. Nucleic Acids Res 2013; 41:4650-9. [PMID: 23449220 PMCID: PMC3632118 DOI: 10.1093/nar/gkt120] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Therapeutic small interfering RNAs (siRNAs) are composed of chemically modified nucleotides, which enhance RNA stability and increase affinity in Watson–Crick base pairing. However, the precise fate of such modified nucleotides once the siRNA is degraded within the cell is unknown. Previously, we demonstrated that deoxythymidine release from degraded siRNAs reversed the cytotoxicity of thymidylate synthase (TS)-targeted siRNAs and other TS inhibitor compounds. We hypothesized that siRNAs could be designed with specific nucleoside analogues that, once released, would enhance siRNA cytotoxicity. TS-targeted siRNAs were designed that contained 5-fluoro-2′-deoxyuridine (FdU) moieties at various locations within the siRNA. After transfection, these siRNAs suppressed TS protein and messenger RNA expression with different efficiencies depending on the location of the FdU modification. FdU was rapidly released from the siRNA as evidenced by formation of the covalent inhibitory ternary complex formed between TS protein and the FdU metabolite, FdUMP. These modified siRNAs exhibited 10–100-fold greater cytotoxicity and induced multiple DNA damage repair and apoptotic pathways when compared with control siRNAs. The strategy of designing siRNA molecules that incorporate cytotoxic nucleosides represents a potentially novel drug development approach for the treatment of cancer and other human diseases.
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Affiliation(s)
- Shao-yu Wu
- Division of Hematology-Oncology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15232, USA
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Ju J. Beyond Thymidylate Synthase and Dihydrofolate Reductase: Impact of Non-coding microRNAs in Anticancer Chemoresistance. ACTA ACUST UNITED AC 2012; 8:118-123. [PMID: 24683387 DOI: 10.2174/157340812800793228] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Chemoresistance is one of the major reasons for the failure of anticancer chemotherapy in treating advanced stage cancer. The mechanism of chemoresistance to fluoropyrimidines and antifolates has been extensively investigated in the past 40 years. It has been well established that thymidylate synthase (TYMS, TS) and dihydrofolate reductase (DHFR) are two major targets for fluoropyrimidines and antifolates, respectively. The regulatory mechanism of TS and DHFR expression is rather complex involving transcriptional, post-transcriptional and translational regulations. Our recent understanding of the chemoresistance mechanism has been extended beyond the simple one target/drug view. In this review, we will focus on the recent advancement of non-coding microRNAs (miRNAs) in contributing to the regulations of TS and DHFR expression, and to the chemoresistance mechanism of fluoropyrimidines and antifolates.
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Affiliation(s)
- Jingfang Ju
- Translational Research Laboratory, Department of Pathology, State University of New York at Stony Brook, Stony Brook, NY 11794-8691, USA
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Homologous recombination is stimulated by a decrease in dUTPase in Arabidopsis. PLoS One 2011; 6:e18658. [PMID: 21541310 PMCID: PMC3082524 DOI: 10.1371/journal.pone.0018658] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2010] [Accepted: 03/07/2011] [Indexed: 11/19/2022] Open
Abstract
Deoxyuridine triphosphatase (dUTPase) enzyme is an essential enzyme that protects DNA against uracil incorporation. No organism can tolerate the absence of this activity. In this article, we show that dUTPase function is conserved between E. coli (Escherichia coli), yeast (Saccharomyces cerevisiae) and Arabidopsis (Arabidopsis thaliana) and that it is essential in Arabidopsis as in both micro-organisms. Using a RNA interference strategy, plant lines were generated with a diminished dUTPase activity as compared to the wild-type. These plants are sensitive to 5-fluoro-uracil. As an indication of DNA damage, inactivation of dUTPase results in the induction of AtRAD51 and AtPARP2, which are involved in DNA repair. Nevertheless, RNAi/DUT1 constructs are compatible with a rad51 mutation. Using a TUNEL assay, DNA damage was observed in the RNAi/DUT1 plants. Finally, plants carrying a homologous recombination (HR) exclusive substrate transformed with the RNAi/DUT1 construct exhibit a seven times increase in homologous recombination events. Increased HR was only detected in the plants that were the most sensitive to 5-fluoro-uracils, thus establishing a link between uracil incorporation in the genomic DNA and HR. Our results show for the first time that genetic instability provoked by the presence of uracils in the DNA is poorly tolerated and that this base misincorporation globally stimulates HR in plants.
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Schmitz JC, Chu E. Effect of small interfering RNA 3'-end overhangs on chemosensitivity to thymidylate synthase inhibitors. SILENCE 2011; 2:1. [PMID: 21247442 PMCID: PMC3035029 DOI: 10.1186/1758-907x-2-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2010] [Accepted: 01/19/2011] [Indexed: 11/26/2022]
Abstract
Background Small interfering RNAs (siRNAs) are double-stranded RNAs that effectively inhibit expression of its complimentary target mRNA. Standard siRNAs contain two nucleotide overhangs on their 3' end. While these overhangs are usually comprised of deoxythymidines (dT), it has been shown that any nucleotide can be used on the 3' end without affecting RNAi silencing. Results It was recently shown that extension of the 3' end to five or eight dT molecules allows siRNAs to be effectively complexed with linear polyethylenimine (PEI), leading to enhanced cellular uptake and intracellular release. Here, we provide further evidence that only extended or 'sticky' siRNAs complexed with PEI result in significant target knockdown. However, when investigating the potential effects of these extended siRNAs on growth of human colon cancer RKO cells, we observed a dose-dependent reversal of cytotoxicity of a thymidylate synthase-targeted siRNA. In contrast, siRNAs with uridine overhangs maintained their growth inhibitory effects. We further demonstrated that dT-containing siRNAs prevented the cytotoxic effects of thymidylate synthase (TS) inhibitor compounds, such as ZD1694 and 5'-fluoro-deoxyuridine, while having no deleterious effect on cisplatin toxicity. We show that this rescue effect results from the rapid degradation of the siRNA. Conclusions Given that TS is an important enzyme for cell growth and proliferation and that its expression is controlled by multiple pathways, the rescue of its growth inhibitory effects may have unintended consequences. As siRNAs are being developed as therapeutic molecules, it will be important to avoid such off-target effects due to dT release. Hence, siRNAs should contain only uridine residues in their 3'-end overhangs.
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Affiliation(s)
- John C Schmitz
- VACT Healthcare System, VACT Cancer Center, West Haven, CT, USA.
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Yano A, Shigematsu Y, Kitano H, Hanayama A, Ozawa A, Tacho T, Fujii M. Possibility of using mRNA expression levels for nucleic acid-metabolizing enzymes within prostate cancer cells as indices for prognostic factors. Oncol Lett 2010; 1:1049-1053. [PMID: 22870111 DOI: 10.3892/ol.2010.165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2010] [Accepted: 08/24/2010] [Indexed: 11/05/2022] Open
Abstract
Thymidylate synthase (TS), dihydropyrimidine dehydrogenase (DPD), thymidine phosphorylase (TP) and orotate phosphoribosyl transferase (OPRT) are enzymes involved in nucleic acid metabolism. It has been reported (based on observations of various tumor types) that the extent of the mRNA expression of these enzymes within tumor tissues may be used as a factor to define tumor prognosis. It has also been reported that the mRNA expression patterns differ in each type of tumor. However, few reports are available on the distribution of mRNA expression in prostate cancers. This study was conducted on tissue specimens obtained from 172 patients who were diagnosed with prostate cancer and had undergone total prostatectomies. The mRNA expression of TS, DPD, OPRT and TP was quantitatively analyzed using the Danenberg tumor profile (DTP) method. The results were used to examine the correlations between the distributions of the mRNAs and clinicopathological factors, as well as the significance of their expression as a prognostic factor. Patients with poorly differentiated cancers in their tissues showed a significant increase in the mRNA expression of TS and OPRT. The increases in the TP mRNA content were proportional to an increase in the Gleason scores. The prognosis was significantly poorer in those cases with a high expression of TS or OPRT mRNA and a low expression of DPD mRNA. In conclusion, the expression levels of mRNAs for TS, DPD and OPRT among the enzymes related to nucleic acid metabolism are useful as prognostic factors in patients with prostate cancers.
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Affiliation(s)
- Akira Yano
- Department of Urology, Matsuyama Red Cross Hospital, Ehime 790-8524, Japan
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Zhang Y, Yang S, Liu M, Song C, Wu N, Ling P, Chu E, Lin X. Interaction between thymidylate synthase and its cognate mRNA in zebrafish embryos. PLoS One 2010; 5:e10618. [PMID: 20485548 PMCID: PMC2868900 DOI: 10.1371/journal.pone.0010618] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2010] [Accepted: 04/14/2010] [Indexed: 02/06/2023] Open
Abstract
Thymidylate synthase (TS), which catalyzes the de novo synthesis of dUMP, is an important target for cancer therapy. In this report, the effects of 5-fluorouracil (5-FU) and ZD1694 on the regulation of TS gene expression were evaluated in zebrafish embryos. Our results revealed that the expression of TS was increased by about six-fold when embryos were treated with 1.0 µM 5-FU and there was a greater than 10-fold increase in the TS protein level after treatment with 0.4 µM ZD1694. Northern blot analysis confirmed that expression of TS mRNA was identical in treated or untreated embryos. Gel shift and immunoprecipitation assays revealed that zebrafish TS was specifically bound with its cognate mRNA in vitro and in vivo. We identified a 20 nt RNA sequence, TS:N20, localized to the 5′-UTR of TS mRNA, which corresponded to nt 13–32; TS:N20 bound to the TS protein with an affinity similar to that of the full-length TS mRNA. The MFold program predicted that TS:N20 formed a stable stem-loop structure similar to that of the cis-acting element found in human TS mRNA. Variant RNAs with either a deletion or mutation in the core motif of TS:N20 were unable to bind to the TS protein. In vitro translation experiments, using the rabbit lysate system, confirmed that zebrafish TS mRNA translation was significantly repressed when an excess amount of TS protein was included in the system. Additionally, a TS stability experiment confirmed that treatment of zebrafish embryos with 5-FU could increase the TS stability significantly, and the half life of TS protein was about 2.7 times longer than in untreated embryos. Our study revealed a structural requirement for the interaction of TS RNA with TS protein. These findings also demonstrated that the increase in TS protein induced by 5-FU occurs at the post-transcriptional level and that increased stability and translation efficiency both contributed to the increase in TS protein levels induced by TS inhibitors.
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Affiliation(s)
- Yuyan Zhang
- Institute of Oceanology, Chinese Academy of Science, Qingdao, People's Republic of China
- Graduate School of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Shaoli Yang
- Institute of Oceanology, Chinese Academy of Science, Qingdao, People's Republic of China
| | - Ming Liu
- Institute of Oceanology, Chinese Academy of Science, Qingdao, People's Republic of China
| | - Chunxia Song
- Institute of Oceanology, Chinese Academy of Science, Qingdao, People's Republic of China
| | - Ning Wu
- Institute of Oceanology, Chinese Academy of Science, Qingdao, People's Republic of China
- Graduate School of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Peixue Ling
- Institute of Biopharmaceuticals of Shandong Province, Jinan, People's Republic of China
| | - Edward Chu
- Yale Cancer Center, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Xiukun Lin
- Institute of Oceanology, Chinese Academy of Science, Qingdao, People's Republic of China
- * E-mail:
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Páez D, Paré L, Altés A, Sancho-Poch FJ, Petriz L, Garriga J, Monill JM, Salazar J, del Rio E, Barnadas A, Marcuello E, Baiget M. Thymidylate synthase germline polymorphisms in rectal cancer patients treated with neoadjuvant chemoradiotherapy based on 5-fluorouracil. J Cancer Res Clin Oncol 2010; 136:1681-9. [PMID: 20165956 DOI: 10.1007/s00432-010-0826-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2009] [Accepted: 02/05/2010] [Indexed: 01/02/2023]
Abstract
PURPOSE Chemoradiotherapy using 5-fluorouracil has shown to be effective treatment for rectal cancer. Thymidylate synthase (TS) is an important target enzyme for the fluoropyrimidines. However, the predictive role of TS levels in early stage rectal cancer is not yet well understood. We analyzed the value of TS gene polymorphisms as a predictive marker in patients with stage II and III rectal cancer treated with preoperative concomitant radiotherapy and fluoropyrimidine-based chemotherapy. METHODS AND MATERIALS Between 1998 and 2007, blood samples were obtained from 51 patients with stage II/III rectal cancer. Forty patients were T2-3 (78%), 11 were T4 (22%), and 59% were N+. DNA was extracted from peripheral blood, and the genotypes were analyzed using PCR-restriction fragment length polymorphism and automated sequencing techniques. RESULTS The *3/*3 thymidylate synthase genotype was associated with a higher response rate (pathological complete remission and microfoci residual tumor; 61 vs. 22% in *2/*2 and *2/*3; P = 0.013). In the multivariate analysis, the *3/*3 thymidylate synthase genotype was also an independent prognostic factor for better survival (P < 0.05). CONCLUSIONS The thymidylate synthase genotype might help to identify patients with stage II/III rectal cancer who could benefit from pre- and postoperative fluorouracil-based chemotherapy.
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Affiliation(s)
- David Páez
- Department of Medical Oncology, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Pare Claret 167, 08025 Barcelona, Spain.
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Furuta T. Pharmacogenomics in chemotherapy for GI tract cancer. J Gastroenterol 2009; 44:1016-25. [PMID: 19728007 DOI: 10.1007/s00535-009-0124-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2009] [Accepted: 08/09/2009] [Indexed: 02/04/2023]
Abstract
The study of pharmacogenomics (PGx) has recently been intensively applied to gastrointestinal tract cancer. It has become clear that there are genetic differences in the activities of enzymes that influence the kinetics of chemotherapeutic agents. Moreover, genetic differences related to cellular sensitivity to anti-cancer agents have also been elucidated. In GI-tract cancer chemotherapy, 5-FU, gemcitabine, taxanes (docetaxel and paclitaxel), platinum (cisplatin and oxaliplatin) and irinotecan are often used, and molecular targeting therapy has also been developed. The respective PGx markers to such agents have been reported. Of the candidate PGx markers, K-ras mutation and UGT1A1 polymorphisms have sufficient evidence to justify routine clinical assessment for the selection of anti-cancer regimens. Progress in this field would facilitate the further development of PGx-guided individualized therapy, which could be expected to increase therapeutic efficacy and decrease the risk of adverse events.
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Affiliation(s)
- Takahisa Furuta
- Center for Clinical Research, Hamamatsu University School of Medicine, 1-20-1, Handayama, Higashiku, Hamamatsu 431-3192, Japan.
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