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Testo and testo-Pt(II) bind DNA at different locations. Chem Biol Interact 2018; 296:179-184. [PMID: 30253125 DOI: 10.1016/j.cbi.2018.09.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Revised: 08/27/2018] [Accepted: 09/17/2018] [Indexed: 01/27/2023]
Abstract
The development of new targeted anticancer agents able to efficiently and specifically destroy cancer cells with minimal toxic side effects is nowadays a subject of intensive research endeavors. We report the conjugation of testo and testo-Pt(II) (two semi-synthetic testosterone derivatives) with calf thymus DNA in aqueous solution at physiological pH. Multiple spectroscopic methods, thermodynamic analysis and modeling were used to determine the binding efficacy of these drugs to DNA duplex. Thermodynamic parameters showed drug-DNA conjugation occurs via ionic interactions with testo-Pt(II) forming more stable DNA adducts than testo with Ktesto-DNA = 1.80 (±0.5) x 105 M-1 and Ktesto-Pt(II)-DNA = 2.3 (±0.8) x 105 M-1. Molecular modeling shows that testo and testo-Pt(II) bind DNA at different locations.
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Shi X, Yang L, Xie J, Zhao Y, Cong J, Li Z, Li H, Cheng X, Fan J. UNBS5162 inhibits proliferation of human melanoma cells by inducing apoptosis via the PI3K/Akt pathway. Mol Med Rep 2018; 18:3382-3388. [PMID: 30066877 DOI: 10.3892/mmr.2018.9321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 04/13/2018] [Indexed: 11/06/2022] Open
Abstract
UNBS5162, a novel naphthalimide, is generated by UNBS3157 hydrolysis in physiological saline. In the present study, the effects of UNBS5162 on M14 human melanoma cells were evaluated by Cell Counting Kit‑8 and transwell assays, as well as western blotting. The underlying mechanism of apoptosis induced by UNBS5162 was investigated. The results demonstrated that proliferation of UNBS5162‑treated M14 melanoma cells was markedly inhibited in a time‑dependent manner. The flow cytometry results indicated a markedly increased apoptosis rate in the experimental group compared with in the control group (23.8±0.4 vs. 7.62±0.5%). Microscopy analysis revealed that the invasive and migratory abilities of UNBS5162‑treated M14 cells were markedly suppressed. Furthermore, UNBS5162 treatment led to decreased expression of the anti‑apoptotic protein B‑cell lymphoma 2, but increased expression of the pro‑apoptotic proteins Bcl‑2‑associated X protein and caspase‑3. In addition, the expression of several key proteins involved in the phosphatidylinositol‑4,5‑bisphosphate 3‑kinase/protein kinase B/mammalian target of rapamycin (PI3K/Akt/mTOR) signaling pathway was altered in M14 cells treated with UNBS5162. Based on these results, it may be hypothesized that UNBS5162 suppresses the proliferation of M14 cells by inducing apoptosis via inhibition of key proteins in the PI3K/Akt/mTOR signaling pathway.
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Affiliation(s)
- Xueli Shi
- Department of Pharmacy, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Liu Yang
- Department of Central Sterile Supply, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Jun Xie
- Department of Nephrology, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Yumei Zhao
- Department of Pharmacy, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Junzi Cong
- Department of Pharmacy, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Zhiping Li
- Department of Pharmacy, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Haiyan Li
- Department of Pharmacy, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Xianzhi Cheng
- Department of Pharmacy, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
| | - Jinghui Fan
- Department of Pharmacy, Hongqi Hospital Affiliated to Mudanjiang Medical University, Mudanjiang, Heilongjiang 157011, P.R. China
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Li Y, Xu S, Cai M. PO 2-based biodosimetry evaluation using an EPR technique acts as a sensitive index for chemotherapy. Oncol Lett 2018; 16:2167-2174. [PMID: 30008915 PMCID: PMC6036430 DOI: 10.3892/ol.2018.8911] [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: 08/11/2017] [Accepted: 04/17/2018] [Indexed: 12/02/2022] Open
Abstract
The partial pressure of oxygen (PO2) in the tumor microenvironment directly affects tumor sensitivity to chemotherapy. In the present study, a lithium phthalocyanine probe was implanted into MCF-7 human breast cancer cells, followed by transplant of the cells into nude mice. The present study used an electron paramagnetic resonance (EPR) oximetry measuring technique to dynamically monitor PO2 in the tumor microenvironment prior to and following chemotherapy, and aimed to determine the precise time window in which the microenvironmental PO2 peaked following chemotherapy. The results indicated that PO2 was significantly higher in breast cancer compared with control (P<0.05). Following four cycles of chemotherapy, the activity of NADH dehydrogenase, succinate-cytochrome c reductase and cytochrome c oxidase in the mitochondria of cells was significantly reduced when compared with their activity prior to chemotherapy (P<0.05). Regional blood flow in tumor tissues undergoing chemotherapy was significantly lower than that prior to chemotherapy (P<0.05). The rate of cellular apoptosis in the PO2 peak-based chemotherapy group was significantly greater than that in the conventional chemotherapy group after two and four cycles of chemotherapy (P<0.05). Tumor volume in the PO2 peak-based chemotherapy group was significantly reduced compared with that in the 0.9% NaCl solution control and the conventional chemotherapy groups after four cycles of chemotherapy (P<0.05). The tumor inhibitory rate of the experimental group was significantly higher than that of the conventional chemotherapy group (P<0.01). In conclusion, the present study may provide guidance for the development of effective strategies depending on tumor-maximal response to chemotherapy in an oxygen-rich environment. Additionally, the present study aimed to establish a foundation for a clinical noninvasive assessment intended to guide treatment and formulate individual regimens, in order to improve cancer therapeutics, sensitivity monitoring and curative effect estimation.
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Affiliation(s)
- Yuanjing Li
- Department of Cardiology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Shengxin Xu
- Institute of Atomic and Molecular Physics, Anhui Normal University, Wuhu 241000, Anhui, P.R. China
| | - Ming Cai
- Department of Endocrinology and Breast Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
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54
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Odabasi IE, Gencturk E, Puza S, Mutlu S, Ulgen KO. A low cost PS based microfluidic platform to investigate cell cycle towards developing a therapeutic strategy for cancer. Biomed Microdevices 2018; 20:57. [DOI: 10.1007/s10544-018-0302-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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55
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Russo C, Lavorgna M, Česen M, Kosjek T, Heath E, Isidori M. Evaluation of acute and chronic ecotoxicity of cyclophosphamide, ifosfamide, their metabolites/transformation products and UV treated samples. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 233:356-363. [PMID: 29096309 DOI: 10.1016/j.envpol.2017.10.066] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2017] [Revised: 10/12/2017] [Accepted: 10/15/2017] [Indexed: 05/21/2023]
Abstract
Cyclophosphamide (CP) and Ifosfamide (IF) are two nitrogen mustard drugs widely prescribed in cancer therapy. They are continuously released via excreta into hospital and urban wastewaters reaching wastewater treatment plants. Although CP and IF, their metabolites and transformation products (TPs) residues have been found in the aquatic environment from few ng L-1 to tens of μg L-1, their environmental toxic effects are still not well known. The present study aimed to investigate the acute and chronic ecotoxicity of CP and IF and their commercially available human metabolites/TPs, i.e. carboxy-CP, Keto-CP and N-dechloroethyl-CP on different organisms of the aquatic trophic chain. The experiments were performed using the green alga Pseudokirchneriella subcapitata, the rotifer Brachionus calyciflorus and the crustaceans Thamnocephalus platyurus and Ceriodaphnia dubia. Moreover, to assess the treatment conditions in regards to parent compound removal and formation of new TPs, CP and IF were UV- irradiated for 6 h, 12 h, 24 h, 36 h and 48 h, followed by toxicity evaluation of treated samples by algae, rotifers and crustaceans. Between the parent compounds, IF resulted as more toxic drug under tested conditions, exerting both acute and chronic effects especially on C. dubia (LC50:196.4 mg L-1, EC50:15.84 mg L-1). Among the tested metabolites/TPs, only carboxy-CP inhibited the reproduction in the rotifer. However, LOEC and NOEC values were calculated for CP and IF for all organisms. In addition, despite a low degradation of CP (28%) and IF (36%) after 48 h UV-irradiation, statistically significant effect differences (p < 0.05) from not-irradiated and irradiated samples were observed in both acute and chronic assays, starting from 6 h UV-irradiation. Our results suggest that the toxic effects found in the aquatic organisms may be attributable to interactions between the parent compounds and their metabolites/TPs.
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Affiliation(s)
- Chiara Russo
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università della Campania L. Vanvitelli, Via Vivaldi 43, I-81100 Caserta, Italy
| | - Margherita Lavorgna
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università della Campania L. Vanvitelli, Via Vivaldi 43, I-81100 Caserta, Italy
| | - Marjeta Česen
- Jozef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia; Jozef Stefan Institute, Department of Environmental Sciences, Jamova 39, 1000 Ljubljana, Slovenia
| | - Tina Kosjek
- Jozef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia; Jozef Stefan Institute, Department of Environmental Sciences, Jamova 39, 1000 Ljubljana, Slovenia
| | - Ester Heath
- Jozef Stefan International Postgraduate School, Jamova 39, 1000 Ljubljana, Slovenia; Jozef Stefan Institute, Department of Environmental Sciences, Jamova 39, 1000 Ljubljana, Slovenia.
| | - Marina Isidori
- Dipartimento di Scienze e Tecnologie Ambientali, Biologiche e Farmaceutiche, Università della Campania L. Vanvitelli, Via Vivaldi 43, I-81100 Caserta, Italy.
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56
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Buchanan MK, Needham CN, Neill NE, White MC, Kelly CB, Mastro-Kishton K, Chauvigne-Hines LM, Goodwin TJ, McIver AL, Bartolotti LJ, Frampton AR, Bourdelais AJ, Varadarajan S. Glycoconjugated Site-Selective DNA-Methylating Agent Targeting Glucose Transporters on Glioma Cells. Biochemistry 2017; 56:421-440. [PMID: 28000448 DOI: 10.1021/acs.biochem.6b01075] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
DNA-alkylating drugs continue to remain an important weapon in the arsenal against cancers. However, they typically suffer from several shortcomings because of the indiscriminate DNA damage that they cause and their inability to specifically target cancer cells. We have developed a strategy for overcoming the deficiencies in current DNA-alkylating chemotherapy drugs by designing a site-specific DNA-methylating agent that can target cancer cells because of its selective uptake via glucose transporters, which are overexpressed in most cancers. The design features of the molecule, its synthesis, its reactivity with DNA, and its toxicity in human glioblastoma cells are reported here. In this molecule, a glucosamine unit, which can facilitate uptake via glucose transporters, is conjugated to one end of a bispyrrole triamide unit, which is known to bind to the minor groove of DNA at A/T-rich regions. A methyl sulfonate moiety is tethered to the other end of the bispyrrole unit to serve as a DNA-methylating agent. This molecule produces exclusively N3-methyladenine adducts upon reaction with DNA and is an order of magnitude more toxic to treatment resistant human glioblastoma cells than streptozotocin is, a Food and Drug Administration-approved, glycoconjugated DNA-methylating drug. Cellular uptake studies using a fluorescent analogue of our molecule provide evidence of uptake via glucose transporters and localization within the nucleus of cells. These results demonstrate the feasibility of our strategy for developing more potent anticancer chemotherapeutics, while minimizing common side effects resulting from off-target damage.
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Affiliation(s)
- Mairin K Buchanan
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington , Wilmington, North Carolina 28403, United States
| | - Chase N Needham
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington , Wilmington, North Carolina 28403, United States
| | - Nina E Neill
- Department of Biology and Marine Biology, University of North Carolina Wilmington , Wilmington, North Carolina 28403, United States
| | - Maria C White
- Department of Biology and Marine Biology, University of North Carolina Wilmington , Wilmington, North Carolina 28403, United States
| | - Charles B Kelly
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington , Wilmington, North Carolina 28403, United States
| | - Kelly Mastro-Kishton
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington , Wilmington, North Carolina 28403, United States
| | - Lacie M Chauvigne-Hines
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington , Wilmington, North Carolina 28403, United States
| | - Tyler J Goodwin
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington , Wilmington, North Carolina 28403, United States
| | - Andrew L McIver
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington , Wilmington, North Carolina 28403, United States
| | - Libero J Bartolotti
- Department of Chemistry, East Carolina University , Greenville, North Carolina 27858, United States
| | - Arthur R Frampton
- Department of Biology and Marine Biology, University of North Carolina Wilmington , Wilmington, North Carolina 28403, United States
| | - Andrea J Bourdelais
- MARBIONC, University of North Carolina Wilmington , Wilmington, North Carolina 28409, United States
| | - Sridhar Varadarajan
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington , Wilmington, North Carolina 28403, United States
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57
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Anticancer Curcumin: Natural Analogues and Structure-Activity Relationship. STUDIES IN NATURAL PRODUCTS CHEMISTRY 2017. [DOI: 10.1016/b978-0-444-63929-5.00010-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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58
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Li Z, Grant KB. DNA photo-cleaving agents in the far-red to near-infrared range – a review. RSC Adv 2016. [DOI: 10.1039/c5ra28102d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Ideal photonucleases for clinical applications cleave DNA upon activation with deeply penetrating far-red to near-infrared light.
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Affiliation(s)
- Ziyi Li
- Department of Chemistry
- Georgia State University
- Atlanta
- USA
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59
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Kusano S, Ishiyama S, Lam SL, Mashima T, Katahira M, Miyamoto K, Aida M, Nagatsugi F. Crosslinking reactions of 4-amino-6-oxo-2-vinylpyrimidine with guanine derivatives and structural analysis of the adducts. Nucleic Acids Res 2015; 43:7717-30. [PMID: 26245348 PMCID: PMC4652779 DOI: 10.1093/nar/gkv797] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 07/28/2015] [Indexed: 12/28/2022] Open
Abstract
DNA interstrand crosslinks (ICLs) are the primary mechanism for the cytotoxic activity of many clinical anticancer drugs, and numerous strategies for forming ICLs have been developed. One such method is using crosslink-forming oligonucleotides (CFOs). In this study, we designed a 4-amino-6-oxo-2-vinylpyrimidine (AOVP) derivative with an acyclic spacer to react selectively with guanine. The AOVP CFO exhibited selective crosslinking reactivity with guanine and thymine in DNA, and with guanine in RNA. These crosslinking reactions with guanine were accelerated in the presence of CoCl2, NiCl2, ZnCl2 and MnCl2. In addition, we demonstrated that the AOVP CFO was reactive toward 8-oxoguanine opposite AOVP in the duplex DNA. The structural analysis of each guanine and 8-oxoguanine adduct in the duplex DNA was investigated by high-resolution NMR. The results suggested that AOVP reacts at the N2 amine in guanine and at the N1 or N2 amines in 8-oxoguanine in the duplex DNA. This study demonstrated the first direct determination of the adduct structure in duplex DNA without enzyme digestion.
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Affiliation(s)
- Shuhei Kusano
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai-shi, Miyagi 980-8577, Japan
| | - Shogo Ishiyama
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai-shi, Miyagi 980-8577, Japan
| | - Sik Lok Lam
- Department of Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Tsukasa Mashima
- Institute of Advanced Energy, Graduate School of Energy Science, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Masato Katahira
- Institute of Advanced Energy, Graduate School of Energy Science, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Kengo Miyamoto
- Department of Chemistry, Graduate School of Science, Hiroshima University,1-3-1, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Misako Aida
- Department of Chemistry, Graduate School of Science, Hiroshima University,1-3-1, Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Fumi Nagatsugi
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai-shi, Miyagi 980-8577, Japan
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60
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Fahs S, Patil-Sen Y, Snape TJ. Foldamers as Anticancer Therapeutics: Targeting Protein-Protein Interactions and the Cell Membrane. Chembiochem 2015; 16:1840-1853. [DOI: 10.1002/cbic.201500188] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Indexed: 01/10/2023]
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61
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Cytotoxic agents and radiation therapy: mechanisms of action and clinical applications. JOURNAL OF RADIOTHERAPY IN PRACTICE 2015. [DOI: 10.1017/s1460396914000363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractBackgroundThe combination of radiation therapy and chemotherapy is rooted in its ability to help achieve locoregional and systemic control, therefore increasing the overall disease-free survival of patients. Understanding the mechanistic actions of cytotoxic agents and their targets on the cell cycle, as well as the governing pharmacokinetic principles can improve treatment delivery. The adjuvant treatment setting can overcome barriers such as hypoxia and genetically driven treatment resistance.PurposeThe purpose of this review is to present theoretical frameworks behind the chemoradiation paradigm and to describe current chemoradiation practices in radiation oncology.MethodologyA review was conducted using the US National Library of Medicine, National Institutes of Health database (PubMed) using the following search keywords: chemoradiation, spatial cooperation, chemotherapeutic agents, pharmacokinetics, anti-vascular agents, tumour vasculature and tumour hypoxia.Results and conclusionsCurrent research has reported several rationales for the beneficial combination of radiation and chemotherapy to eradicate oncological diseases. Mechanisms of action and biological approaches are showing that concurrent treatments, as well as novel agents such as anti-vascular and anti-angiogenic agents may benefit improved treatment outcomes by reducing micro hypoxic environments in tumours. In addition, chemotherapy administered in tandem with radiation enhances cell-killing effects by targeting the cell cycle.
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62
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Kandi SK, Manohar S, Vélez Gerena CE, Zayas B, Malhotra SV, Rawat DS. C5-curcuminoid-4-aminoquinoline based molecular hybrids: design, synthesis and mechanistic investigation of anticancer activity. NEW J CHEM 2015. [DOI: 10.1039/c4nj00936c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel hybrids exhibiting excellent anticancer activity against most of the NCI 60 cell lines through apoptotic pathways are reported herein.
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Affiliation(s)
| | - Sunny Manohar
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | | | - Beatriz Zayas
- School of Environmental Affairs
- Universidad Metropolitana
- San Juan
- USA
| | - Sanjay V. Malhotra
- Laboratory of Synthetic Chemistry
- Leidos Biomedical Research Inc
- Frederick National Laboratory for Cancer Research
- Frederick
- USA
| | - Diwan S. Rawat
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
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63
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Antimutagenic compounds and their possible mechanisms of action. J Appl Genet 2014; 55:273-85. [PMID: 24615570 PMCID: PMC3990861 DOI: 10.1007/s13353-014-0198-9] [Citation(s) in RCA: 110] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 01/20/2014] [Accepted: 01/31/2014] [Indexed: 12/23/2022]
Abstract
Mutagenicity refers to the induction of permanent changes in the DNA sequence of an organism, which may result in a heritable change in the characteristics of living systems. Antimutagenic agents are able to counteract the effects of mutagens. This group of agents includes both natural and synthetic compounds. Based on their mechanism of action among antimutagens, several classes of compounds may be distinguished. These are compounds with antioxidant activity; compounds that inhibit the activation of mutagens; blocking agents; as well as compounds characterized with several modes of action. It was reported previously that several antitumor compounds act through the antimutagenic mechanism. Hence, searching for antimutagenic compounds represents a rapidly expanding field of cancer research. It may be observed that, in recent years, many publications were focused on the screening of both natural and synthetic compounds for their beneficial muta/antimutagenicity profile. Thus, the present review attempts to give a brief outline on substances presenting antimutagenic potency and their possible mechanism of action. Additionally, in the present paper, a screening strategy for mutagenicity testing was presented and the characteristics of the most widely used antimutagenicity assays were described.
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64
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Aldol reactions of 2-thioxotetrahydropyrimidin-4(1H)-ones: stereoregulations from endo- and exocyclic chiral centres. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.12.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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65
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Kawada Y, Kodama T, Miyashita K, Imanishi T, Obika S. Synthesis and evaluation of novel caged DNA alkylating agents bearing 3,4-epoxypiperidine structure. Org Biomol Chem 2012; 10:5102-8. [DOI: 10.1039/c2ob25366f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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66
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(Swain) Marcsisin EJ, Uttero CM, Mazur AI, Miljković M, Bird B, Diem M. Noise Adjusted Principal Component reconstruction to optimize infrared microspectroscopy of individual live cells. Analyst 2012; 137:2958-64. [DOI: 10.1039/c2an15868j] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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67
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Harris F, Dennison SR, Singh J, Phoenix DA. On the selectivity and efficacy of defense peptides with respect to cancer cells. Med Res Rev 2011; 33:190-234. [PMID: 21922503 DOI: 10.1002/med.20252] [Citation(s) in RCA: 122] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Here, we review potential determinants of the anticancer efficacy of innate immune peptides (ACPs) for cancer cells. These determinants include membrane-based factors, such as receptors, phosphatidylserine, sialic acid residues, and sulfated glycans, and peptide-based factors, such as residue composition, sequence length, net charge, hydrophobic arc size, hydrophobicity, and amphiphilicity. Each of these factors may contribute to the anticancer action of ACPs, but no single factor(s) makes an overriding contribution to their overall selectivity and toxicity. Differences between the anticancer actions of ACPs seem to relate to different levels of interplay between these peptide and membrane-based factors.
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Affiliation(s)
- Frederick Harris
- School of Forensic and Investigative Sciences, University of Central Lancashire, Preston, Lancashire, United Kingdom
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68
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Kishton RJ, Miller SE, Perry H, Lynch T, Patel M, Gore VK, Akkaraju GR, Varadarajan S. DNA site-specific N3-adenine methylation targeted to estrogen receptor-positive cells. Bioorg Med Chem 2011; 19:5093-102. [PMID: 21839641 DOI: 10.1016/j.bmc.2011.07.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Revised: 07/11/2011] [Accepted: 07/15/2011] [Indexed: 11/16/2022]
Abstract
A compound that can target cells expressing the estrogen receptor (ER), and produce predominantly 3-MeA adducts in those cells has been designed and synthesized. This compound produces mainly the 3-MeA adduct upon reaction with calf thymus DNA, and binds to the ER with a relative binding affinity of 51% (estradiol = 100%). The compound is toxic to ER-expressing MCF-7 breast cancer cells, and pre-treatment with the ER antagonist fulvestrant abrogates the toxicity. Pre-treatment of MCF-7 cells with netropsin, which inhibits N3-adenine methylation by the compound, resulted in a threefold decrease in the toxicity. These results demonstrate the feasibility of this strategy for producing 3-MeA adducts in targeted cells.
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Affiliation(s)
- Rigel J Kishton
- Department of Chemistry and Biochemistry, University of North Carolina Wilmington, Wilmington, NC 28403-5932, USA
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69
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Obika S, Kawada Y, Kodama T, Miyashita K, Imanishi T. Synthesis and Evaluation of Novel 3,4-Epoxypiperidines as Efficient DNA Alkylating Agents. HETEROCYCLES 2010. [DOI: 10.3987/com-09-s(s)112] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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