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Li XJ, Nie P, Herdewijn P, Sun JG. Unlocking the synthetic approaches and clinical application of approved small-molecule drugs for gastrointestinal cancer treatment: A comprehensive exploration. Eur J Med Chem 2023; 262:115928. [PMID: 37944387 DOI: 10.1016/j.ejmech.2023.115928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 10/29/2023] [Accepted: 10/31/2023] [Indexed: 11/12/2023]
Abstract
Gastrointestinal (GI) cancers encompass a group of malignancies affecting the digestive system, including the stomach, esophagus, liver, colon, rectum and pancreas. These cancers represent a significant global health burden, necessitating effective treatment strategies. Small-molecule drugs have emerged as crucial therapeutic options in the fight against GI cancers due to their oral bioavailability, targeted mechanisms of action, and well-established safety profiles. The review then elucidates the clinical applications and synthetic methods of clinically approved small-molecule drugs for the treatment of GI cancer, shedding light on their mechanisms of action and their potential in mitigating GI cancer progression. The review also discusses future prospects and the evolving landscape of small-molecule drug development in GI oncology, highlighting the potential for personalized medicine. In summary, this review provides valuable insights into cutting-edge strategies for harnessing clinically approved small-molecule drugs to combat GI cancer effectively.
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Affiliation(s)
- Xiao-Jing Li
- Department of Pharmacy, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China
| | - Peng Nie
- Medicinal Chemistry, Rega Institute of Medical Research, KU Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Piet Herdewijn
- Medicinal Chemistry, Rega Institute of Medical Research, KU Leuven, Herestraat 49, 3000, Leuven, Belgium.
| | - Jian-Gang Sun
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, 450052, China.
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2
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Ding J, Chu C, Mao Z, Yang J, Wang J, Hu L, Chen P, Cao Y, Li Y, Wan H, Wei D, Chen J, Chen F, Yu Y. Metabolomics-based mechanism exploration of pulmonary arterial hypertension pathogenesis: novel lessons from explanted human lungs. Hypertens Res 2022; 45:990-1000. [PMID: 35354935 DOI: 10.1038/s41440-022-00898-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Revised: 02/10/2022] [Accepted: 02/18/2022] [Indexed: 11/09/2022]
Abstract
Pulmonary arterial hypertension has led to global health and social problems, but the pathogenic mechanism has not been fully elucidated. Dysregulated metabolism is closely associated with the pathogenesis of pulmonary arterial hypertension. Here, we investigated metabolic profile shifts to reveal the molecular mechanisms underlying pulmonary hypertension. Explanted lung tissues from 13 idiopathic pulmonary arterial hypertension patients, 5 pulmonary arterial hypertension associated with congenital heart disease patients, and 16 controls were collected for untargeted metabolomics analysis with liquid chromatography coupled with tandem mass spectrometry. The KEGG database and MetaboAnalyst 5.0 were used for pathway analysis. A Cox survival analysis model was applied to evaluate the predictive value of metabolites on prognosis. Protein expression levels in human and rat pulmonary arterial hypertension lungs and hypoxia-exposed human pulmonary artery smooth muscle cells were detected by Western blotting to study the molecular mechanisms. Significant differences in metabolites and metabolic pathways were identified among the pulmonary arterial hypertension subgroups and control tissues. The levels of spermine were positively correlated with the patients' cardiac output, and (2e)-2,5-dichloro-4-oxo-2-hexenedioic acid was positively correlated with the patients' serum creatinine levels. Patients with higher thymine levels had a better prognosis. Moreover, seven differential metabolites were associated with the AKT pathway. AKT pathway inactivation was confirmed in human and rat pulmonary hypertensive lungs and pulmonary artery smooth muscle cells exposed to hypoxia. Our findings provide the first metabolomics evidence for pulmonary arterial hypertension pathogenesis in human lungs and may contribute to the improvement in therapeutic strategies.
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Affiliation(s)
- Jingjing Ding
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Chunyan Chu
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Zhengsheng Mao
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jiawen Yang
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Jie Wang
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Li Hu
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Peng Chen
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yue Cao
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Yan Li
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Hua Wan
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Dong Wei
- Wuxi Lung Transplantation Center, Wuxi People's Hospital Affiliated with Nanjing Medical University, Wuxi, China
| | - Jingyu Chen
- Wuxi Lung Transplantation Center, Wuxi People's Hospital Affiliated with Nanjing Medical University, Wuxi, China.
| | - Feng Chen
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China. .,Key Laboratory of Targeted Intervention of Cardiovascular Disease, Collaborative Innovation Center for Cardiovascular Disease Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China. .,The Institute of Translational Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.
| | - Youjia Yu
- Department of Forensic Medicine, Nanjing Medical University, Nanjing, Jiangsu, China.
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Using PET imaging to track STING-induced interferon signaling. Proc Natl Acad Sci U S A 2021; 118:2114839118. [PMID: 34521758 DOI: 10.1073/pnas.2114839118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2021] [Indexed: 11/18/2022] Open
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STING-driven interferon signaling triggers metabolic alterations in pancreas cancer cells visualized by [ 18F]FLT PET imaging. Proc Natl Acad Sci U S A 2021; 118:2105390118. [PMID: 34480004 PMCID: PMC8433573 DOI: 10.1073/pnas.2105390118] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 07/26/2021] [Indexed: 01/19/2023] Open
Abstract
Type I interferons (IFNs) are critical effectors of emerging cancer immunotherapies designed to activate pattern recognition receptors (PRRs). A challenge in the clinical translation of these agents is the lack of noninvasive pharmacodynamic biomarkers that indicate increased intratumoral IFN signaling following PRR activation. Positron emission tomography (PET) imaging enables the visualization of tissue metabolic activity, but whether IFN signaling-induced alterations in tumor cell metabolism can be detected using PET has not been investigated. We found that IFN signaling augments pancreatic ductal adenocarcinoma (PDAC) cell nucleotide metabolism via transcriptional induction of metabolism-associated genes including thymidine phosphorylase (TYMP). TYMP catalyzes the first step in the catabolism of thymidine, which competitively inhibits intratumoral accumulation of the nucleoside analog PET probe 3'-deoxy-3'-[18F]fluorothymidine ([18F]FLT). Accordingly, IFN treatment up-regulates cancer cell [18F]FLT uptake in the presence of thymidine, and this effect is dependent upon TYMP expression. In vivo, genetic activation of stimulator of interferon genes (STING), a PRR highly expressed in PDAC, enhances the [18F]FLT avidity of xenograft tumors. Additionally, small molecule STING agonists trigger IFN signaling-dependent TYMP expression in PDAC cells and increase tumor [18F]FLT uptake in vivo following systemic treatment. These findings indicate that [18F]FLT accumulation in tumors is sensitive to IFN signaling and that [18F]FLT PET may serve as a pharmacodynamic biomarker for STING agonist-based therapies in PDAC and possibly other malignancies characterized by elevated STING expression.
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Tarar A, Alyami EM, Peng CA. Mesenchymal stem cells anchored with thymidine phosphorylase for doxifluridine-mediated cancer therapy. RSC Adv 2021; 11:1394-1403. [PMID: 35424143 PMCID: PMC8693507 DOI: 10.1039/d0ra10263f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Accepted: 12/23/2020] [Indexed: 12/11/2022] Open
Abstract
Many tumors express thymidine phosphorylase (TYMP) with various levels, however due to tumor heterogeneity, the amount of TYMP is usually not enough to convert prodrug doxifluridine (5'-DFUR) to toxic drug 5-fluorouracil (5-FU). Since human mesenchymal stem cells (hMSCs) have unique features of tumor-tropism and low immunogenicity, the purpose of this study is to use mesenchymal stem cells as carriers to deliver TYMP to cancer cells and then trigger their death by administrating doxifluridine. First, the TYMP gene sequence and core streptavidin (core SA) were constructed into pET-30a(+) plasmid. After bacterial transformation and colony screening, TYMP-SA fusion protein was expressed by IPTG induction and purified by immobilized metal affinity chromatography and characterized by SDS-PAGE and western blot with a clear band at 75 kDa. The characterized TYMP-SA was further anchored on the cell membrane of biotinylated hMSCs via biotin-streptavidin binding. hMSCs anchored with TYMP-SA were then co-cultured with adenocarcinoma A549 cells (with different ratios) and treated with 100 μM prodrug doxifluridine over the course of four days. Our results showed that a 2 : 1 ratio led to the eradication of A549 cells at the end of the experiment with less than 5% confluency, in comparison with the 1 : 1 and 1 : 2 ratios which still had about 13% and 20% confluency respectively. In conclusion, harnessing hMSCs as cell carriers for the delivery of TYMP enzyme to cancer cells could lead to significant cell death post-treatment of the prodrug doxifluridine.
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Affiliation(s)
- Ammar Tarar
- Department of Chemical & Biological Engineering, University of Idaho Engineering Physics Building 421, 875 Perimeter Drive Moscow ID 83844-0904 USA +1-208-885-7461
| | - Esmael M Alyami
- Department of Chemical & Biological Engineering, University of Idaho Engineering Physics Building 421, 875 Perimeter Drive Moscow ID 83844-0904 USA +1-208-885-7461
| | - Ching-An Peng
- Department of Chemical & Biological Engineering, University of Idaho Engineering Physics Building 421, 875 Perimeter Drive Moscow ID 83844-0904 USA +1-208-885-7461
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Liu H, Qin Y, Zhai D, Zhang Q, Gu J, Tang Y, Yang J, Li K, Yang L, Chen S, Zhong W, Meng J, Liu Y, Sun T, Yang C. Antimalarial Drug Pyrimethamine Plays a Dual Role in Antitumor Proliferation and Metastasis through Targeting DHFR and TP. Mol Cancer Ther 2019; 18:541-555. [DOI: 10.1158/1535-7163.mct-18-0936] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/16/2018] [Accepted: 01/11/2019] [Indexed: 11/16/2022]
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Sawdon AJ, Zhang J, Wang X, Peng CA. Enhanced Anticancer Activity of 5'-DFUR-PCL-MPEG Polymeric Prodrug Micelles Encapsulating Chemotherapeutic Drugs. NANOMATERIALS 2018; 8:nano8121041. [PMID: 30551585 PMCID: PMC6315712 DOI: 10.3390/nano8121041] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Revised: 12/10/2018] [Accepted: 12/11/2018] [Indexed: 12/15/2022]
Abstract
The compound 5’-deoxy-5-fluorouridine (5’-DFUR) is a prodrug of the anti-tumor drug 5-fluorouracil (5-FU). Thymidine phosphorylase (TP) is an enzyme that can convert 5’-DFUR to its active form 5-FU and the expression of TP is upregulated in various cancer cells. In this study, 5’-DFUR associated with amphiphilic copolymer poly(ε-caprolactone)-methoxy poly(ethylene glycol) (5’-DFUR-PCL-MPEG) was synthesized, characterized, and self-assembled into functional polymeric micelles. To demonstrate that the prodrug 5’-DFUR could convert into cytotoxic 5-fluorouracil (5-FU) by endogenous TP, HT-29 colorectal cancer cells were treated with 5’-DFUR-PCL-MPEG polymeric micelles for various time periods. Chemotherapeutic drugs doxorubicin (DOX) and 7-ethyl-10-hydroxycamptothecin (SN-38) were also encapsulated separately into 5’-DFUR-PCL-MPEG polymeric micelles to create a dual drug-loaded system. HT-29 cells were treated with DOX or SN-38 encapsulated 5’-DFUR-PCL-MPEG polymeric micelles to examine the efficacy of dual drug-loaded micelles. As a result, HT-29 cells treated with 5’-DFUR-PCL-MPEG polymeric micelles showed up to 40% cell death rate after a 72-h treatment. In contrast, HT-29 cells challenged with DOX or SN-38 encapsulated 5’-DFUR-incorporated polymeric micelles showed 36% and 31% in cell viability after a 72-h treatment, respectively.
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Affiliation(s)
- Alicia J Sawdon
- Department of Chemical Engineering, Michigan Technological University, Houghton, MI, 49931, USA.
| | - Jun Zhang
- Department of Biological Engineering, University of Idaho, Moscow, ID 83844, USA.
| | - Xutu Wang
- Department of Biological Engineering, University of Idaho, Moscow, ID 83844, USA.
| | - Ching-An Peng
- Department of Biological Engineering, University of Idaho, Moscow, ID 83844, USA.
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8
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Schelhaas S, Heinzmann K, Honess DJ, Smith DM, Keen H, Heskamp S, Witney TH, Besret L, Doblas S, Griffiths JR, Aboagye EO, Jacobs AH. 3'-Deoxy-3'-[ 18F]Fluorothymidine Uptake Is Related to Thymidine Phosphorylase Expression in Various Experimental Tumor Models. Mol Imaging Biol 2018; 20:194-199. [PMID: 28971330 DOI: 10.1007/s11307-017-1125-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE We recently reported that high thymidine phosphorylase (TP) expression is accompanied by low tumor thymidine concentration and high 3'-deoxy-3'-[18F]fluorothymidine ([18F]FLT) uptake in four untreated lung cancer xenografts. Here, we investigated whether this relationship also holds true for a broader range of tumor models. PROCEDURES Lysates from n = 15 different tumor models originating from n = 6 institutions were tested for TP and thymidylate synthase (TS) expression using western blots. Results were correlated to [18F]FLT accumulation in the tumors as determined by positron emission tomography (PET) measurements in the different institutions and to previously published thymidine concentrations. RESULTS Expression of TP correlated positively with [18F]FLT SUVmax (ρ = 0.549, P < 0.05). Furthermore, tumors with high TP levels possessed lower levels of thymidine (ρ = - 0.939, P < 0.001). CONCLUSIONS In a broad range of tumors, [18F]FLT uptake as measured by PET is substantially influenced by TP expression and tumor thymidine concentrations. These data strengthen the role of TP as factor confounding [18F]FLT uptake.
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Affiliation(s)
- Sonja Schelhaas
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Waldeyerstr. 15, 48149, Münster, Germany
| | - Kathrin Heinzmann
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
- Comprehensive Cancer Imaging Centre, Imperial College London, London, UK
| | - Davina J Honess
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | | | - Heather Keen
- PHB Imaging Group, AstraZeneca, Alderley Park, Macclesfield, UK
| | - Sandra Heskamp
- Department of Radiology and Nuclear Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Timothy H Witney
- Comprehensive Cancer Imaging Centre, Imperial College London, London, UK
- UCL Centre for Advanced Biomedical Imaging, University College London, London, UK
| | | | | | - John R Griffiths
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - Eric O Aboagye
- Comprehensive Cancer Imaging Centre, Imperial College London, London, UK
| | - Andreas H Jacobs
- European Institute for Molecular Imaging (EIMI), Westfälische Wilhelms-Universität (WWU) Münster, Waldeyerstr. 15, 48149, Münster, Germany.
- Department of Geriatric Medicine, Johanniter Hospital, Bonn, Germany.
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Kim SY, Jung JH, Lee HJ, Soh H, Lee SJ, Oh SJ, Chae SY, Lee JH, Lee SJ, Hong YS, Kim TW, Moon DH. [ 18F]fluorothymidine PET Informs the Synergistic Efficacy of Capecitabine and Trifluridine/Tipiracil in Colon Cancer. Cancer Res 2017; 77:7120-7130. [PMID: 29055019 DOI: 10.1158/0008-5472.can-17-1406] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 08/09/2017] [Accepted: 10/13/2017] [Indexed: 11/16/2022]
Abstract
In cancer therapy, enhanced thymidine uptake by the salvage pathway can bypass dTMP depletion, thereby conferring resistance to thymidylate synthase inhibition. We investigated whether sequential combination therapy of capecitabine and trifluridine/tipiracil (TAS-102) could synergistically enhance antitumor efficacy in colon cancer xenograft models. We also examined 3'-deoxy-3'-[18F]fluorothymidine ([18F]FLT) PET as a means to predict therapeutic response to a sequential combination of capecitabine and trifluridine/tipiracil. [3H]FLT uptake after 5-fluorouracil treatment in vitro and [18F]FLT uptake after capecitabine (360 mg/kg/day) in athymic nude mice (Balb/c-nu) with xenografts (n = 10-12 per group) were measured using eight human colon cancer cell lines. We determined the synergistic effects of sequential combinations of 5-fluorouracil and trifluridine in vitro as well as the sequential combination of oral capecitabine (30-360 mg/kg) and trifluridine/tipiracil (trifluridine 75 or 150 mg/kg with tipiracil) in six xenograft models (n = 6-10 per group). We observed significant increases in [3H]FLT uptake in all cell lines and [18F]FLT uptake in five xenograft models after 5-fluorouracil and capecitabine treatment, respectively. Increased [18F]FLT uptake after capecitabine followed by extinction of uptake correlated strongly with tumor growth inhibition (ρ = -0.81, P = 0.02). The effects of these combinations were synergistic in vitro A synergy for sequential capecitabine and trifluridine/tipiracil was found only in mouse xenograft models showing increased [18F]FLT uptake after capecitabine. Our results suggest that the sequential combination of capecitabine and trifluridine/tipiracil is synergistic in tumors with an activated salvage pathway after capecitabine treatment in mice, and [18F]FLT PET imaging may predict the response to capecitabine and the synergistic antitumor efficacy of a sequential combination of capecitabine and trifluridine/tipiracil. Cancer Res; 77(24); 7120-30. ©2017 AACR.
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Affiliation(s)
- Seog-Young Kim
- Convergence Medicine Research Center, Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea.,Department of Convergence Medicine, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jin Hwa Jung
- Convergence Medicine Research Center, Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
| | - Haeng Jung Lee
- Convergence Medicine Research Center, Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
| | - Hyunsu Soh
- Convergence Medicine Research Center, Asan Institute for Life Sciences, Asan Medical Center, Seoul, Republic of Korea
| | - Sang Ju Lee
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Seung Jun Oh
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Sun Young Chae
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jai Hyuen Lee
- Department of Nuclear Medicine, Dankook University College of Medicine, Cheonan, Chungcheongnam-do, Republic of Korea
| | - Seung Jin Lee
- Department of Pharmacology, Chungnam National University College of Pharmacy, Daejeon, Republic of Korea
| | - Yong Sang Hong
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Tae Won Kim
- Department of Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Dae Hyuk Moon
- Department of Nuclear Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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Nedergaard MK, Michaelsen SR, Perryman L, Erler J, Poulsen HS, Stockhausen MT, Lassen U, Kjaer A. Comparison of 18F-FET and 18F-FLT small animal PET for the assessment of anti-VEGF treatment response in an orthotopic model of glioblastoma. Nucl Med Biol 2016; 43:198-205. [DOI: 10.1016/j.nucmedbio.2015.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Revised: 12/18/2015] [Accepted: 12/18/2015] [Indexed: 01/31/2023]
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Li Z, Guo Y, Yu Y, Xu C, Xu H, Qin J. Assessment of metabolism-dependent drug efficacy and toxicity on a multilayer organs-on-a-chip. Integr Biol (Camb) 2016; 8:1022-1029. [DOI: 10.1039/c6ib00162a] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This work presents a new and multifunctional organs-on-a-chip device that allows for the characterization of the multi-step metabolism processes of pro-drug CAP in liver cells and its resultant efficacy in multiple target cells simultaneously and quantitatively.
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Affiliation(s)
- Zhongyu Li
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- China
- University of Chinese Academy of Sciences
| | - Yaqiong Guo
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- China
- University of Chinese Academy of Sciences
| | - Yue Yu
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- China
- University of Chinese Academy of Sciences
| | - Cong Xu
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- China
- University of Chinese Academy of Sciences
| | - Hui Xu
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- China
- University of Chinese Academy of Sciences
| | - Jianhua Qin
- Division of Biotechnology
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- China
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12
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Lee HJ, Oh SJ, Lee EJ, Chung JH, Kim Y, Ryu JS, Kim SY, Lee SJ, Moon DH, Kim TW. Positron emission tomography imaging of human colon cancer xenografts in mice with [18F]fluorothymidine after TAS-102 treatment. Cancer Chemother Pharmacol 2015; 75:1005-13. [PMID: 25776904 DOI: 10.1007/s00280-015-2718-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 02/27/2015] [Indexed: 11/26/2022]
Abstract
PURPOSE TAS-102 is an orally administered anticancer agent composed of α,α,α-trifluorothymidine (FTD) and thymidine phosphorylase inhibitor (TPI). This study assessed 3'-deoxy-3'-[(18)F]fluorothymidine ([(18)F]FLT) uptake after TAS-102 administration. METHODS The human colorectal carcinoma cell lines HCT116, HT29, HCT8 and SW620 were exposed to FTD for 2 h, further incubated for 0, 2 and 24 h, and assayed for [(3)H]FLT uptake, nucleoside transport, thymidine kinase 1 (TK1) expression and TK1 activity. Static and 2-h dynamic [(18)F]FLT positron emission tomography (PET) was performed in mice bearing HT29 or SW620 tumours orally administered with vehicle or TAS-102. RESULTS FTD decreased the viability of all cell lines, whereas increased [(3)H]FLT uptake (P < 0.05). Increased nucleoside transport and/or TK1 expression were observed 24 h after FTD, but not in 0-2 h. Static [(18)F]FLT PET in mice bearing HT29 tumours showed accumulation of [(18)F]FLT in tumours 1 h (day 1) after TAS-102. Two-hour dynamic PET in mice bearing SW620 tumours showed increased influx constant and volume of distribution of phosphorylated [(18)F]FLT on days 1 and 8 (P < 0.05) after TAS-102 with decreased dephosphorylation on day 1 (P < 0.001). Ex vivo studies showed that SW620 tumours after TAS-102 had higher TK1 expression than those with vehicle on days 8 and 15. CONCLUSION TAS-102 administration induces an increase in [(18)F]FLT uptake. Mechanisms may involve decreased dephosphorylation of [(18)F]FLT phosphate early after TAS-102 administration. Increased TK1 expression and/or nucleoside transporter may be related to increased [(18)F]FLT uptake at a later time. [(18)F]FLT PET has a potential to assess the pharmacodynamics of TAS-102 in cancer patients.
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Affiliation(s)
- Haeng Jung Lee
- Institute for Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88, Olympic-ro 43-gil, Songpa-gu, Seoul, Republic of Korea
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Image-derived biomarkers and multimodal imaging strategies for lung cancer management. Eur J Nucl Med Mol Imaging 2015; 42:634-43. [DOI: 10.1007/s00259-014-2974-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 12/08/2014] [Indexed: 12/14/2022]
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