1
|
Zhou Q, Chen J, Zhang J, Zhou F, Zhao J, Wei X, Zheng K, Wu J, Li B, Pan B. Toxicity and endocrine-disrupting potential of PM 2.5: Association with particulate polycyclic aromatic hydrocarbons, phthalate esters, and heavy metals. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118349. [PMID: 34653588 DOI: 10.1016/j.envpol.2021.118349] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 10/02/2021] [Accepted: 10/08/2021] [Indexed: 06/13/2023]
Abstract
The adverse effects of fine atmospheric particulate matter with aerodynamic diameters of ≤2.5 μm (PM2.5) are closely associated with particulate chemicals. In this study, PM2.5 samples were collected from highway and industry sites in Hangzhou, China, during the autumn and winter, and their cytotoxicity and pulmonary toxicity and endocrine-disrupting potential (EDP) were evaluated in vitro and in vivo; the particulate polycyclic aromatic hydrocarbons (PAHs), phthalate esters (PAEs), and heavy metals were then characterized. The toxicological results suggested that the PM2.5 from highway site induced higher cytotoxicity (cell viability inhibition, intracellular oxidative stress, and cell membrane injury) and pulmonary toxicity (inflammatory response (IR) and oxidative stress (OS)) than the samples from industry site, while the PM2.5 from industry site exhibited higher EDP (estrogenic and anti-androgenic activity). The cytotoxicity and pulmonary toxicity of PM2.5 in the winter were higher than those in the autumn, while no seasonal difference in the endocrine-disrupting potential was observed (p > 0.05). The Pearson correlation analysis between the biological effects and particulate chemicals revealed that the PM2.5-induced inflammatory response and oxidative stress were closely associated with the particulate PAHs and heavy metals (Pearson correlation coefficients: rIR, PAHs = 0.822-0.988, rIR, heavy metals = 0.895-0.971, rOS, PAHs = 0.843-0.986, and rOS, heavy metals = 0.887-0.933), while particulate di (2-ethylhexyl)phthalate (DEHP) substantially contributed to the EDP of PM2.5 (rEDP, DEHP = 0.981). This study indicated that the toxicity and EDP of PM2.5 could vary with the surrounding environment and season, which was closely associated with the variations of particulate chemicals. Further studies are needed to clarify the associations between the harmful effects of PM2.5 and other contributing factors.
Collapse
Affiliation(s)
- Qinghua Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Jinyuan Chen
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Junfan Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Feifei Zhou
- Departments of TCM Gynecology, Women's Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Jingjing Zhao
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Xiuzhen Wei
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Kaiyun Zheng
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Jian Wu
- Ecology and Environmental Science Research & Design Institute of Zhejiang Province, Hangzhou, China
| | - Bingjie Li
- College of Environment, Zhejiang University of Technology, Hangzhou, China
| | - Bingjun Pan
- College of Environment, Zhejiang University of Technology, Hangzhou, China.
| |
Collapse
|
2
|
Murahari M, Kharkar PS, Lonikar N, Mayur YC. Design, synthesis, biological evaluation, molecular docking and QSAR studies of 2,4-dimethylacridones as anticancer agents. Eur J Med Chem 2017; 130:154-170. [PMID: 28246041 DOI: 10.1016/j.ejmech.2017.02.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 02/07/2017] [Accepted: 02/08/2017] [Indexed: 02/05/2023]
Affiliation(s)
- Manikanta Murahari
- Department of Pharmaceutical Chemistry, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, Mumbai 400 056, India; Department of Pharmaceutical Chemistry, Faculty of Pharmacy, M.S. Ramaiah University of Applied Sciences, Bangalore 560 054, India
| | - Prashant S Kharkar
- Department of Pharmaceutical Chemistry, SPP School of Pharmacy & Technology Management, SVKM's NMIMS, Mumbai 400 056, India
| | - Nitin Lonikar
- Department of Pharmaceutical Chemistry, AME's V.L. College of Pharmacy, Raichur 584103, India
| | - Y C Mayur
- Department of Pharmaceutical Chemistry, SPP School of Pharmacy & Technology Management, SVKM's NMIMS, Mumbai 400 056, India.
| |
Collapse
|
3
|
Doménech-Carbó A, Cebrián-Torrejón G, Montoya N, Ueberschaar N, Scotti MT, Benfodda Z, Hertweck C. Electrochemical monitoring of ROS generation by anticancer agents: the case of chartreusin. RSC Adv 2017. [DOI: 10.1039/c7ra08238j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Generation of ROS by anticancer agents is monitored using solid state electrochemical techniques.
Collapse
Affiliation(s)
| | | | - Noemí Montoya
- Departament de Química Analítica
- Facultat de Química
- Universitat de València
- Valencia
- Spain
| | - Nico Ueberschaar
- Department of Biomolecular Chemistry
- Leibniz Institute for Natural Product Research and Infection Biology (HKI)
- Jena
- Germany
| | - Marcus Tullius Scotti
- Department of Engineering and the Environment
- Federal University of Paraíba
- Rio Tinto
- Brazil
| | | | - Christian Hertweck
- Department of Biomolecular Chemistry
- Leibniz Institute for Natural Product Research and Infection Biology (HKI)
- Jena
- Germany
| |
Collapse
|
4
|
Development of background-free tame fluorescent probes for intracellular live cell imaging. Nat Commun 2016; 7:11964. [PMID: 27321135 PMCID: PMC4915154 DOI: 10.1038/ncomms11964] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Accepted: 05/16/2016] [Indexed: 01/11/2023] Open
Abstract
Fluorescence labelling of an intracellular biomolecule in native living cells is a powerful strategy to achieve in-depth understanding of the biomolecule's roles and functions. Besides being nontoxic and specific, desirable labelling probes should be highly cell permeable without nonspecific interactions with other cellular components to warrant high signal-to-noise ratio. While it is critical, rational design for such probes is tricky. Here we report the first predictive model for cell permeable background-free probe development through optimized lipophilicity, water solubility and charged van der Waals surface area. The model was developed by utilizing high-throughput screening in combination with cheminformatics. We demonstrate its reliability by developing CO-1 and AzG-1, a cyclooctyne- and azide-containing BODIPY probe, respectively, which specifically label intracellular target organelles and engineered proteins with minimum background. The results provide an efficient strategy for development of background-free probes, referred to as ‘tame' probes, and novel tools for live cell intracellular imaging. The success of a fluorescent dye as a molecular probe to monitor the intracellular activity of biomolecules depends on its physicochemical characteristics. Here, the authors use a predictive model to identify key features that allow them to design cell permeable, background-free fluorescent probes.
Collapse
|
5
|
Computational fishing of new DNA methyltransferase inhibitors from natural products. J Mol Graph Model 2015; 60:43-54. [PMID: 26099696 DOI: 10.1016/j.jmgm.2015.04.010] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 03/28/2015] [Accepted: 04/22/2015] [Indexed: 12/31/2022]
Abstract
DNA methyltransferase inhibitors (DNMTis) have become an alternative for cancer therapies. However, only two DNMTis have been approved as anticancer drugs, although with some restrictions. Natural products (NPs) are a promising source of drugs. In order to find NPs with novel chemotypes as DNMTis, 47 compounds with known activity against these enzymes were used to build a LDA-based QSAR model for active/inactive molecules (93% accuracy) based on molecular descriptors. This classifier was employed to identify potential DNMTis on 800 NPs from NatProd Collection. 447 selected compounds were docked on two human DNA methyltransferase (DNMT) structures (PDB codes: 3SWR and 2QRV) using AutoDock Vina and Surflex-Dock, prioritizing according to their score values, contact patterns at 4 Å and molecular diversity. Six consensus NPs were identified as virtual hits against DNMTs, including 9,10-dihydro-12-hydroxygambogic, phloridzin, 2',4'-dihydroxychalcone 4'-glucoside, daunorubicin, pyrromycin and centaurein. This method is an innovative computational strategy for identifying DNMTis, useful in the identification of potent and selective anticancer drugs.
Collapse
|
6
|
An infrastructure to mine molecular descriptors for ligand selection on virtual screening. BIOMED RESEARCH INTERNATIONAL 2014; 2014:325959. [PMID: 24812613 PMCID: PMC4000951 DOI: 10.1155/2014/325959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Accepted: 02/14/2014] [Indexed: 11/25/2022]
Abstract
The receptor-ligand interaction evaluation is one important step in rational drug design. The databases that provide the structures of the ligands are growing on a daily basis. This makes it impossible to test all the ligands for a target receptor. Hence, a ligand selection before testing the ligands is needed. One possible approach is to evaluate a set of molecular descriptors. With the aim of describing the characteristics of promising compounds for a specific receptor we introduce a data warehouse-based infrastructure to mine molecular descriptors for virtual screening (VS). We performed experiments that consider as target the receptor HIV-1 protease and different compounds for this protein. A set of 9 molecular descriptors are taken as the predictive attributes and the free energy of binding is taken as a target attribute. By applying the J48 algorithm over the data we obtain decision tree models that achieved up to 84% of accuracy. The models indicate which molecular descriptors and their respective values are relevant to influence good FEB results. Using their rules we performed ligand selection on ZINC database. Our results show important reduction in ligands selection to be applied in VS experiments; for instance, the best selection model picked only 0.21% of the total amount of drug-like ligands.
Collapse
|
7
|
Quantitative structure–property relationship study on the intercalation of anticancer drugs with ct-DNA. Med Chem Res 2013. [DOI: 10.1007/s00044-013-0716-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
8
|
Hussain A, Gadadhar S, Goswami TK, Karande AA, Chakravarty AR. Photoactivated DNA cleavage and anticancer activity of pyrenyl-terpyridine lanthanide complexes. Eur J Med Chem 2012; 50:319-31. [DOI: 10.1016/j.ejmech.2012.02.011] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Revised: 02/01/2012] [Accepted: 02/03/2012] [Indexed: 01/02/2023]
|
9
|
Rajabi M, Khalilzadeh MA, Mehrzad J. Antiproliferative activity of novel derivative of thiopyran on breast and colon cancer lines and DNA binding. DNA Cell Biol 2011; 31:128-34. [PMID: 21711159 DOI: 10.1089/dna.2011.1291] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Dimethyl-5-acetyl-4-methyl-6-(4-methylphenylimino)-6H-thiopyran-2,3-dicarboxylate (4) has been synthesized and its antiproliferative activity is reported here. Compound 4 inhibited the growth of human colon cancer cell line HCT-15 with an IC(50) value of 3.5 μM and of breast cancer cell line MCF-7 with an IC(50) value of 1.5 μM in a dose/time-dependent manner using a sulforhodamine B assay. Moreover, suppression of clonogenic activity occurred after exposure to 4 at a concentration of 4 μM for HCT-15 and 1.7 μM for MCF-7. The results also showed tumor cell invasion through matrigel and cell adhesion. The effect of ligand complexation on DNA structure led to overall affinity constant of K(4-DNA)=9.8×10(4) M(-1).
Collapse
Affiliation(s)
- Mehdi Rajabi
- Department of Chemistry and Biochemistry, Islamic Azad University, Neyshabur Branch, Neyshabur, Iran.
| | | | | |
Collapse
|
10
|
Kunwar A, Simon E, Singh U, Chittela RK, Sharma D, Sandur SK, Priyadarsini IK. Interaction of a curcumin analogue dimethoxycurcumin with DNA. Chem Biol Drug Des 2011; 77:281-7. [PMID: 21244640 DOI: 10.1111/j.1747-0285.2011.01083.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Dimethoxycurcumin (Dimc), a synthetic analogue of curcumin, that has been reported to exhibit better in vivo stability and anti-tumour activity, was investigated for its interaction with DNA, employing spectroscopic methods based on absorption, fluorescence, circular dichroism (CD), ethidium bromide (EtBr) competitive binding assay, 4'-6-diamidino-2-phenylindole (DAPI) displacement assay and fluorescence resonance energy transfer (FRET) assay. The mean binding constant for its interaction with calf thymus DNA (ct-DNA) was estimated to be 4.4±0.8 × 10(4) m(-1) . The studies using CD revealed that Dimc did not cause unwinding of the ct-DNA helix or induce major conformational changes. The EtBr and DAPI assays indicated that Dimc is not an intercalator but a minor groove binder. FRET assay also confirmed that Dimc interacts with DNA strands. Furthermore, viscosity measurements of ct-DNA solutions in the presence of Dimc supported these spectroscopic observations. Addition of Dimc to MCF-7 cells showed nuclear localization as visualized by confocal microscopy. In conclusion, the present studies addressed the mode of interaction of Dimc with biomolecules, which may have implications in developing Dimc as a DNA-targeted drug.
Collapse
Affiliation(s)
- Amit Kunwar
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre Mumbai, India.
| | | | | | | | | | | | | |
Collapse
|
11
|
Barceló F, Ortiz-Lombardía M, Martorell M, Oliver M, Méndez C, Salas JA, Portugal J. DNA binding characteristics of mithramycin and chromomycin analogues obtained by combinatorial biosynthesis. Biochemistry 2010; 49:10543-52. [PMID: 21067184 DOI: 10.1021/bi101398s] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The antitumor antibiotics mithramycin A and chromomycin A(3) bind reversibly to the minor groove of G/C-rich regions in DNA in the presence of dications such as Mg(2+), and their antiproliferative activity has been associated with their ability to block the binding of certain transcription factors to gene promoters. Despite their biological activity, their use as anticancer agents is limited by severe side effects. Therefore, in our pursuit of new structurally related molecules showing both lower toxicity and higher biological activity, we have examined the binding to DNA of six analogues that we have obtained by combinatorial biosynthetic procedures in the producing organisms. All these molecules bear a variety of changes in the side chain attached to C-3 of the chromophore. The spectroscopic characterization of their binding to DNA followed by the evaluation of binding parameters and associated thermodynamics revealed differences in their binding affinity. DNA binding was entropically driven, dominated by the hydrophobic transfer of every compound from solution into the minor groove of DNA. Among the analogues, mithramycin SDK and chromomycin SDK possessed the higher DNA binding affinities.
Collapse
Affiliation(s)
- Francisca Barceló
- Departament de Biologia Fundamental i Ciencies de la Salut, Universitat de les Illes Balears, Palma de Mallorca, Spain
| | | | | | | | | | | | | |
Collapse
|
12
|
Liu M, Liu RH, Song BB, Li CF, Lin LQ, Zhang CP, Zhao JL, Liu JR. Antiangiogenetic Effects of 4 Varieties of Grapes In Vitro. J Food Sci 2010; 75:T99-104. [PMID: 20722961 DOI: 10.1111/j.1750-3841.2010.01662.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Ming Liu
- Treatment Center of Oncology, Fourth Hospital of Harbin Medical Univ., Harbin, P.R. China.
| | | | | | | | | | | | | | | |
Collapse
|
13
|
Mansilla S, Garcia-Ferrer I, Méndez C, Salas JA, Portugal J. Differential inhibition of restriction enzyme cleavage by chromophore-modified analogues of the antitumour antibiotics mithramycin and chromomycin reveals structure–activity relationships. Biochem Pharmacol 2010; 79:1418-27. [DOI: 10.1016/j.bcp.2010.01.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2009] [Revised: 12/21/2009] [Accepted: 01/11/2010] [Indexed: 11/25/2022]
|
14
|
Shahabuddin MS, Nambiar M, Advirao GM, Raghavan SC. Intercalative pyrimido[4',5':4,5]thieno(2,3-b)quinolines induce apoptosis in leukemic cells: a comparative study of methoxy and morpholino substitution. Invest New Drugs 2010; 29:873-82. [PMID: 20424886 DOI: 10.1007/s10637-010-9436-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Accepted: 04/12/2010] [Indexed: 11/30/2022]
Abstract
DNA intercalating molecules are promising anticancer agents. Polycyclic aromatic molecules such as ellipticine intercalate into double-stranded DNA and affect major physiological functions. In the present study, we have characterized two molecules with the same chemical backbone but different side chains, namely 8-methoxy pyrimido[4',5':4,5]thieno (2,3-b)quinoline-4(3H)-one (MPTQ) and 4-morpholino pyrimido[4',5':4,5]thieno(2,3-b)quinoline (morpho-PTQ) at the 8th and 4th position, respectively. Although both MPTQ and morpho-PTQ show similar biophysical properties with high DNA affinity, here we show that they differ in their biological activities. We find that MPTQ is many fold more potent than morpho-PTQ and is cytotoxic against different leukemic cell lines. IC(50) value of methoxy PTQ was estimated between 2-15 µM among the leukemic cells studied, while it was more than 200 µM when morpho-PTQ was used. Cell cycle analysis shows an increase in sub-G1 phase, without any particular cell cycle arrest. Annexin V staining in conjunction with comet assay and DNA fragmentation suggest that MPTQ induces cytotoxicity by activating apoptosis. Thus the observed low IC(50) value of MPTQ makes it a promising cancer chemotherapeutic agent.
Collapse
Affiliation(s)
- M S Shahabuddin
- Department of Biochemistry, Indian Institute of Science, Bangalore 560 012, India
| | | | | | | |
Collapse
|