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Zhao J, Li D, Ma J, Yang H, Chen W, Cao Y, Liu P. Increasing the accumulation of aptamer AS1411 and verapamil conjugated silver nanoparticles in tumor cells to enhance the radiosensitivity of glioma. NANOTECHNOLOGY 2021; 32:145102. [PMID: 33296880 DOI: 10.1088/1361-6528/abd20a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Radioresistance significantly decreases the efficacy of radiotherapy, which can ultimately lead to tumor recurrence and metastasis. As a novel type of nano-radiosensitizer, silver nanoparticles (AgNPs) have shown promising radiosensitizing properties in the radiotherapy of glioma, but their ability to efficiently enter and accumulate in tumor cells needs to be improved. In the current study, AS1411 and verapamil (VRP) conjugated bovine serum albumin (BSA) coated AgNPs (AgNPs@BSA-AS-VRP) were synthesized and characterized. Dark-field imaging and inductively coupled plasma mass spectrometry were applied to investigate the accumulation of AgNPs@BSA-AS and AgNPs@BSA-AS-VRP mixed in different ratios in U251 glioma cells. To assess the influences of 19:1 mixed AgNPs@BSA-AS and AgNPs@BSA-AS-VRP on the P-glycoprotein (P-gp) efflux activity, rhodamine 123 accumulation assay was carried out. Colony formation assay and tumor-bearing nude mice model were employed to examine the radiosensitizing potential of 19:1 mixed AgNPs@BSA-AS and AgNPs@BSA-AS-VRP. Thioredoxin Reductase (TrxR) Assay Kit was used to detect the TrxR activity in cells treated with different functionally modified AgNPs. Characterization results revealed that AgNPs@BSA-AS-VRP were successfully constructed. When AgNPs@BSA-AS and AgNPs@BSA-AS-VRP were mixed in a ratio of 19:1, the amount of intracellular nanoparticles increased greatly through AS1411-mediated active targeting and inhibition of P-gp activity. In vitro and in vivo experiments clearly showed that the radiosensitization efficacy of 19:1 mixed AgNPs@BSA-AS and AgNPs@BSA-AS-VRP was much stronger than that of AgNPs@BSA and AgNPs@BSA-AS. It was also found that 19:1 mixed AgNPs@BSA-AS and AgNPs@BSA-AS-VRP significantly inhibited intracellular TrxR activity. These results indicate that 19:1 mixed AgNPs@BSA-AS and AgNPs@BSA-AS-VRP can effectively accumulate in tumor cells and have great potential as high-efficiency nano-radiosensitizers in the radiotherapy of glioma.
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Affiliation(s)
- Jing Zhao
- School of Medicine, Southeast University, Nanjing 210009, People's Republic of China
| | - Dongdong Li
- School of Medicine, Southeast University, Nanjing 210009, People's Republic of China
| | - Jun Ma
- Radiotherapy Department, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210029, People's Republic of China
| | - Huiquan Yang
- School of Medicine, Southeast University, Nanjing 210009, People's Republic of China
| | - Wenbin Chen
- School of Medicine, Southeast University, Nanjing 210009, People's Republic of China
| | - Yuyu Cao
- School of Medicine, Southeast University, Nanjing 210009, People's Republic of China
| | - Peidang Liu
- School of Medicine, Southeast University, Nanjing 210009, People's Republic of China
- Jiangsu Key Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210096, People's Republic of China
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Lopes A, Martins E, Silva R, Pinto MMM, Remião F, Sousa E, Fernandes C. Chiral Thioxanthones as Modulators of P-glycoprotein: Synthesis and Enantioselectivity Studies. Molecules 2018. [PMID: 29534440 PMCID: PMC6017912 DOI: 10.3390/molecules23030626] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Recently, thioxanthone derivatives were found to protect cells against toxic P-glycoprotein (P-gp) substrates, acting as potent inducers/activators of this efflux pump. The study of new P-gp chiral modulators produced from thioxanthone derivatives could clarify the enantioselectivity of this ABC transporter towards this new class of modulators. The aim of this study was to evaluate the P-gp modulatory ability of four enantiomeric pairs of new synthesized chiral aminated thioxanthones (ATxs) 1–8, studying the influence of the stereochemistry on P-gp induction/ activation in cultured Caco-2 cells. The data displayed that all the tested compounds (at 20 μM) significantly decreased the intracellular accumulation of a P-gp fluorescent substrate (rhodamine 123) when incubated simultaneously for 60 min, demonstrating an increased activity of the efflux, when compared to control cells. Additionally, all of them except ATx 3 (+), caused similar results when the accumulation of the P-gp fluorescent substrate was evaluated after pre-incubating cells with the test compounds for 24 h, significantly reducing the rhodamine 123 intracellular accumulation as a result of a significant increase in P-gp activity. However, ATx 2 (−) was the only derivative that, after 24 h of incubation, significantly increased P-gp expression. These results demonstrated a significantly increased P-gp activity, even without an increase in P-gp expression. Therefore, ATxs 1–8 were shown to behave as P-gp activators. Furthermore, no significant differences were detected in the activity of the protein when comparing the enantiomeric pairs. Nevertheless, ATx 2 (−) modulates P-gp expression differently from its enantiomer, ATx 1 (+). These results disclosed new activators and inducers of P-gp and highlight the existence of enantioselectivity in the induction mechanism.
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Affiliation(s)
- Ana Lopes
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
| | - Eva Martins
- REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, FFUP - Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Renata Silva
- REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, FFUP - Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Madalena M M Pinto
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
| | - Fernando Remião
- REQUIMTE, Laboratory of Toxicology, Department of Biological Sciences, FFUP - Faculty of Pharmacy, University of Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.
| | - Emília Sousa
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
| | - Carla Fernandes
- Laboratory of Organic and Pharmaceutical Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge Viterbo Ferreira 228, 4050-313 Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research, University of Porto, Terminal de Cruzeiros do Porto de Leixões, Av. General Norton de Matos s/n, 4450-208 Matosinhos, Portugal.
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Syed SB, Arya H, Fu IH, Yeh TK, Periyasamy L, Hsieh HP, Coumar MS. Targeting P-glycoprotein: Investigation of piperine analogs for overcoming drug resistance in cancer. Sci Rep 2017; 7:7972. [PMID: 28801675 PMCID: PMC5554262 DOI: 10.1038/s41598-017-08062-2] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2017] [Accepted: 07/04/2017] [Indexed: 01/08/2023] Open
Abstract
P-glycoprotein (P-gp) is a drug transporter that effluxes chemotherapeutic drugs and is implicated in the development of resistance of cancer cells to chemotherapeutic drugs. To date, no drug has been approved to inhibit P-gp and restore chemotherapy efficacy. Moreover, majority of the reported inhibitors have high molecular weight and complex structures, making it difficult to understand the basic structural requirement for P-gp inhibition. In this study, two structurally simple, low molecular weight piperine analogs Pip1 and Pip2 were designed and found to better interact with P-gp than piperine in silico. A one step, acid-amine coupling reaction between piperic acid and 6,7-dimethoxytetrahydroisoquinoline or 2-(3,4-dimethoxyphenyl)ethylamine afforded Pip1 and Pip2, respectively. In vitro testing in drug resistant P-gp overexpressing KB (cervical) and SW480 (colon) cancer cells showed that both analogs, when co-administered with vincristine, colchicine or paclitaxel were able to reverse the resistance. Moreover, accumulation of P-gp substrate (rhodamine 123) in the resistant cells, a result of alteration of the P-gp efflux, was also observed. These investigations suggest that the natural product analog - Pip1 ((2E,4E)-5-(benzo[d][1,3]dioxol-5-yl)-1-(6,7-dimethoxy-3,4-dihydroisoquinolin-2(1 H)-yl)penta-2,4-dien-1-one) - is superior to piperine and could inhibit P-gp function. Further studies are required to explore the full potential of Pip1 in treating drug resistant cancer.
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Affiliation(s)
- Safiulla Basha Syed
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, Kalapet, Puducherry, 605014, India
- DBT-Interdisciplinary Program in Life Sciences, Pondicherry University, Kalapet, Puducherry, 605014, India
| | - Hemant Arya
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, Kalapet, Puducherry, 605014, India
| | - I-Hsuan Fu
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 350, Taiwan, ROC
| | - Teng-Kuang Yeh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 350, Taiwan, ROC
| | - Latha Periyasamy
- Department of Biochemistry & Molecular Biology, School of Life Sciences, Pondicherry University, Kalapet, Puducherry, 605014, India
| | - Hsing-Pang Hsieh
- Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County, 350, Taiwan, ROC.
- Department of Chemistry, National Tsing Hua University, Hsinchu, 350, Taiwan, ROC.
| | - Mohane Selvaraj Coumar
- Centre for Bioinformatics, School of Life Sciences, Pondicherry University, Kalapet, Puducherry, 605014, India.
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Three-dimensional in vitro gut model on a villi-shaped collagen scaffold. BIOCHIP JOURNAL 2017. [DOI: 10.1007/s13206-017-1307-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Yu J, Li X, Zhou J, Xie X, Chen M, He X, Yang Y, Zhang Y, Zheng A, Mei X, Li Y. Chiral analysis of ammuxetine enantiomers in dog plasma using online SPE/liquid chromatography with tandem mass spectrometric detection after precolumn chiral derivatization. Chirality 2017; 29:193-201. [DOI: 10.1002/chir.22692] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2016] [Revised: 11/26/2016] [Accepted: 12/04/2016] [Indexed: 01/02/2023]
Affiliation(s)
- Jimei Yu
- Department of Pharmacy; Beijing Institute of Pharmacology and Toxicology; Beijing China
| | - Xin Li
- Department of Pharmacy; Chinese PLA General Hospital; Beijing China
| | - Jiezhao Zhou
- Department of Pharmacy; Beijing Institute of Pharmacology and Toxicology; Beijing China
| | - Xiangyang Xie
- Department of Pharmacy; Beijing Institute of Pharmacology and Toxicology; Beijing China
| | - Meiling Chen
- Department of Pharmacy; Beijing Institute of Pharmacology and Toxicology; Beijing China
| | - Xinhua He
- Department of Pharmacy; Beijing Institute of Pharmacology and Toxicology; Beijing China
| | - Yang Yang
- Department of Pharmacy; Beijing Institute of Pharmacology and Toxicology; Beijing China
| | - Youzhi Zhang
- Department of Pharmacy; Beijing Institute of Pharmacology and Toxicology; Beijing China
| | - Aiping Zheng
- Department of Pharmacy; Beijing Institute of Pharmacology and Toxicology; Beijing China
| | - Xingguo Mei
- Department of Pharmacy; Beijing Institute of Pharmacology and Toxicology; Beijing China
| | - Ying Li
- Department of Pharmacy; Beijing Institute of Pharmacology and Toxicology; Beijing China
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Transport and uptake of clausenamide enantiomers in CYP3A4-transfected Caco-2 cells: An insight into the efflux-metabolism alliance. Biochem Pharmacol 2015; 98:224-30. [DOI: 10.1016/j.bcp.2015.08.102] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Accepted: 08/17/2015] [Indexed: 11/21/2022]
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