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Das K, Halder S. Synthesis of Functionalized Five-Membered Heterocycles from Epoxides: A Hydrogen-Bond Donor Catalytic Approach. J Org Chem 2023; 88:12872-12883. [PMID: 36007267 DOI: 10.1021/acs.joc.2c00902] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The synthesis of highly functionalized five-membered oxa- and aza-heterocycles has been reported utilizing hydrogen-bond donor (HBD) catalysis. In this method, an epoxide was taken as a substrate and reacted with functionalized arylidene/alkylidene malononitrile derivatives in the presence of a newly designed HBD catalyst. In all the cases, the products 2,5-disubstituted tetrahydrofurans (2,5-THFs) were obtained in good to excellent yields (up to 86%) with high diastereoselectivity (dr up to 99:1) as a single regioisomer. The stereochemistry at the 2- and 5-positions of the five-membered ring has been confirmed by single-crystal X-ray analysis, and cis is found to be the major product. The same strategy has been further utilized to obtain substituted oxazolidines whenever the epoxide has been reacted with isocyanate as an electrophile. In order to induce enantioselectivity, a chiral epoxide has been reacted with both the electrophiles in the presence of the same catalyst system to afford the single stereoisomer of the final products. This synthetic methodology involves a low catalyst loading and ambient reaction condition and has been generalized with various substituents present in the starting electrophiles to produce the resultant products in acceptable yields and stereoselectivity.
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Affiliation(s)
- Koushik Das
- Department of Chemistry, Visvesvaraya National Institute of Technology (VNIT), Nagpur, Maharashtra 440010, India
| | - Sandipan Halder
- Department of Chemistry, Visvesvaraya National Institute of Technology (VNIT), Nagpur, Maharashtra 440010, India
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2
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Arjmand F, Yasir Khan H, Tabassum S. Progress of Metal-Based Anticancer Chemotherapeutic Agents in Last two Decades and their Comprehensive Biological (DNA/RNA Binding, Cleavage and Cytotoxicity Activity) Studies. CHEM REC 2023; 23:e202200247. [PMID: 36762719 DOI: 10.1002/tcr.202200247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/31/2022] [Indexed: 02/11/2023]
Abstract
During last two decades, there has been an enormous growth in the discovery of innovative active inorganic anticancer complexes (exerting remarkable cytotoxicity at sub micro-molar levels) derived from myriad ligand scaffolds, mainly acting on cancerous vs healthy cells by either halting or inhibiting their uncontrolled growth. The phenomenal success of cisplatin to treat numerous forms of solid malignancies has placed metal-based drugs to the forefront of treatment strategies against cancers. More than 10,000 platinum anticancer complexes have been developed during the past 40 years, but only five drugs have been approved for usage in humans while ten more complexes are currently undergoing clinical trials. Most of the compounds have failed either at R&D stages or in preclinical trails. This has led to extensive investigations by researchers of medicinal chemistry, including our group to design and prepare tailored 3d-metallo-drugs and organotin(IV) compounds from some naturally occurring bioactive compounds, such as amino-acids, peptides, chromone derivatives and NSAID's etc. that were used either alone or in cocktail combination, capable of specifically targeting DNA, lnc RNAs and proteins. Furthermore, 3d-metal ions such as copper, cobalt and zinc etc. incorporated in these ligand framework are biocompatible and induce a unique multi-modal mechanism of cytotoxic action involving angiogenesis, ROS-induced DNA damage, apoptosis by p53 mitochondrial genes and caspases etc. The results observed a positive correlation between the binding affinity of complexes with DNA (as quantified by intrinsic binding constant values) and their cytotoxic behavior. Complexes with high DNA binding propensity were typically lethal against a diverse panel of malignant cell types compared to normal cells.
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Affiliation(s)
- Farukh Arjmand
- Department of Chemistry, Aligarh Muslim University, Aligarh, U.P., India-, 202002
| | - Huzaifa Yasir Khan
- Department of Chemistry, Aligarh Muslim University, Aligarh, U.P., India-, 202002
| | - Sartaj Tabassum
- Department of Chemistry, Aligarh Muslim University, Aligarh, U.P., India-, 202002
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3
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Pansare AV, Pansare PV, Shedge AA, Pansare SV, Patil VR, Terrasi GP, Donde KJ. Click gold quantum dots biosynthesis with conjugation of quercetin for adenocarcinoma exertion. RSC Adv 2022; 12:18425-18430. [PMID: 35799927 PMCID: PMC9218964 DOI: 10.1039/d2ra02529a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 05/23/2022] [Indexed: 12/20/2022] Open
Abstract
We developed a cost-effective and eco-friendly click biosynthesis of small molecule quercetin-gold quantum dots (QRT-AuQDs) involving quick conjugation using an ultrasonication method at ambient temperature by utilizing QRT and gold ions in the proportion of 0.1 : 1 (molar ratio). A comparatively very short amount of time (60 seconds) was required as compared to conventional procedures. The present biomimetics research relates to the isolation of bioactive QRT by the circularly spread silica gel layer technique (CSSGLT) and characterization (UV-Vis, FTIR, NMR and DSC analysis). Characterization of the synthesized QRT-AuQDs conjugated complex was carried out by UV-Vis, HR-TEM, DLS, zeta potential and X-ray diffraction. The main objective of the present work was to study the comparative anticancer activity of QRT and QRT-AuQDs on human lung cancer HOP-62 and leukemia K-562 cell lines. The results suggested that QRT-AuQDs showed potential for applications in anticancer treatment and were found to be a more cytotoxic agent in comparison to QRT, causing > 50% inhibition of cancer cells at the concentration < 10-7 M. Hence, small molecule conjugated QRT-AuQDs can be used as a promising material for biomedical, bioengineering and anti-infectives applications.
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Affiliation(s)
- Amol V Pansare
- Composite Group, Mechanical Systems Engineering, Swiss Federal Laboratories for Materials Science and Technology-Empa 8600 Dübendorf Switzerland
- Department of Chemistry, University of Mumbai Santacruz (E) Mumbai 400098 India
| | - Priyanka V Pansare
- Ramnarain Ruia Autonomous College, University of Mumbai Matunga (E) India
| | - Amol A Shedge
- Department of Chemistry, University of Mumbai Santacruz (E) Mumbai 400098 India
| | - Shubham V Pansare
- Department of Chemistry, University of Mumbai Santacruz (E) Mumbai 400098 India
| | - Vishwanath R Patil
- Department of Chemistry, University of Mumbai Santacruz (E) Mumbai 400098 India
| | - Giovanni P Terrasi
- Composite Group, Mechanical Systems Engineering, Swiss Federal Laboratories for Materials Science and Technology-Empa 8600 Dübendorf Switzerland
| | - Kamini J Donde
- Ramnarain Ruia Autonomous College, University of Mumbai Matunga (E) India
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4
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Zehra S, Gómez-Ruiz S, Siddique HR, Tabassum S, Arjmand F. Water soluble ionic Co(II), Cu(II) and Zn(II) diimine-glycinate complexes targeted to tRNA: structural description, in vitro comparative binding, cleavage and cytotoxic studies towards chemoresistant prostate cancer cells. Dalton Trans 2020; 49:16830-16848. [PMID: 33179662 DOI: 10.1039/d0dt02657c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Four new water soluble Co(ii), Cu(ii) and Zn(ii) ionic metal complexes (1-4) [Cu(diimine)(H2O)2(glycinate)]+[glycinate]-, [Co(diimine)(H2O)4]+[glycinate]- and [Zn(diimine) (H2O)4]+[glycinate]-, where diimine = 2,2'-bipyridine (1-3) and 1,10-phenanthroline (4) were synthesized and thoroughly characterized by spectroscopic and single X-ray crystallographic studies. Complex 1 possesses a triclinic crystal system with a penta-coordinated geometry whereas complexes 2-4 crystallized in an isostructural monoclinic system having distorted octahedral geometry. Density functional theory (DFT) studies for complexes 1-4 were performed to correlate their geometrical parameters and to calculate the energy of frontier molecular orbitals. The corroborative results of spectroscopic and voltammetric studies with ct-DNA and tRNA revealed that the complexes bind noncovalently via an electrostatic mode of binding with specificity for tRNA as compared to ct-DNA. Gel electrophoresis experiments revealed that all the complexes unwind the plasmid pBR322 DNA at low micromolar concentrations (2-9 μM) following an oxidative mechanism for Cu(ii) and Co(ii) complexes (1, 2 and 4) whereas the Zn(ii) complex (3) mediates DNA cleavage by the hydrolytic pathway. The tRNA cleavage showed concentration and time dependent activity of the complexes to promote RNA hydrolysis. Furthermore, the BSA binding ability of complexes 1-4 was monitored, which revealed that the complexes could quench the intrinsic fluorescence in a static manner. Complexes 1-4 were found to be non-toxic towards normal prostate epithelial cells, PNT2, but were potent against chemoresistant metastatic prostate cancer cells, Du145, with GI50 values ranging from 12.75-37 μM. Complexes 1 and 2 also showed cytotoxic activity against cancer stem cells having GI50 values of 14.70 and 14.90 μM, respectively. Molecular docking studies were performed with DNA and tRNA which further validated the spectroscopic analysis demonstrating the higher binding affinity of the complexes towards tRNA.
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Affiliation(s)
- Siffeen Zehra
- Department of Chemistry, Aligarh Muslim University, Aligarh, U.P., India-202002.
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5
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Basu Baul TS, Addepalli MR, Lyčka A, van Terwingen S, Englert U. Synthesis, characterization and structural systematics in diorganotin complexes with O,N,O'-tris-chelating semirigid diaza-scaffolds: Mono- vs. di-nuclear compounds. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121522] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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6
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Pantatosaki E, Papadopoulos GK. Binding Dynamics of siRNA with Selected Lipopeptides: A Computer-Aided Study of the Effect of Lipopeptides' Functional Groups and Stereoisomerism. J Chem Theory Comput 2020; 16:3842-3855. [PMID: 32324997 DOI: 10.1021/acs.jctc.9b01261] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The engineering issues pertaining to nanoparticle systems toward targeted gene therapies have not been fully probed. Recent experiments have identified specific structural characteristics of a novel class of lipopeptides (LP) that may lead to potent nanocarriers intended as RNAi therapeutics, albeit the molecular mechanism that underlies their performance remains unexplored. We conducted molecular dynamics simulations in atomistic detail coupled with free energy computations to study the dynamics and thermodynamics of an acrylate- and an epoxide-derived LP, members of the aforesaid class, upon their binding to siRNA in aqueous solution aiming at examining structure-potency relations. We found that the entropic part of the free energy of binding predominates; moreover, the first LP class tends to disrupt the Watson-Crick base pairing of siRNA, whereas the latter leaves the double helix intact. Moreover, the identified tug-of-war effect between LP-water and LP-siRNA hydrogen bonding in the supramolecular complex can underpin synthesis routes toward tuning the association dynamics. Our simulations on two diastereomers of the epoxide-derived LP showed significant structural and energetics differences upon binding, as a result of steric effects imposed by the different absolute configurations at their chiral centers. These findings may serve as crucial design parameters toward modulating the interplay between complex stability and ease of releasing the nucleic acid drug into the cell.
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Affiliation(s)
- Evangelia Pantatosaki
- School of Chemical Engineering, National Technical University of Athens, 15780 Athens, Greece
| | - George K Papadopoulos
- School of Chemical Engineering, National Technical University of Athens, 15780 Athens, Greece.,Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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7
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The triphenyltin carboxylate derivative triphenylstannyl 2-(benzylcarbamoyl)benzoate impedes prostate cancer progression via modulation of Akt/FOXO3a signaling. Toxicol Appl Pharmacol 2020; 401:115091. [PMID: 32525019 DOI: 10.1016/j.taap.2020.115091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 05/31/2020] [Accepted: 06/02/2020] [Indexed: 12/22/2022]
Abstract
Prostate cancer (PCa) incidence is surging in United States and other parts of the world. Synthetic and natural compounds have been explored as potential modulators of PI3K/Akt signaling that is known to drive PCa growth. Here, we evaluated the efficacy of a series of triphenyltin (IV) carboxylate derivatives against PCa. From this library, triphenylstannyl 2-(benzylcarbamoyl)benzoate (Ch-319) resulted in reduced viability and induction of cell cycle arrest in PTEN-/- PC3M and PTEN+/- DU145 cells. In parallel, downregulation of PI3K p85/p110 subunits, dephosphorylation of Akt-1 and increase in FOXO3a expression were observed. In silico studies indicated binding interactions of Ch-319 within the ATP binding site of Akt-1 at Met281, Phe442 and Glu234 residues. Elevated po-pulation of apoptotic cells, activation of Bax and reduced Bcl2 expression indicated apoptosis by Ch-319. Pre-sensitization of PCa cells with Ch-319 augmented the effect of cabazitaxel, a commonly used taxane in patients with castration-resistant PCa. Next, in a prostate-specific PTENp-/- mice, Ch-319 showed reduced weights of genitourinary apparatus as compared to DMSO treated controls. Histological studies indicated absence of neoplastic foci in Ch-319 treated prostates. Consistently, dephosphorylation of Akt-1, reduced expression of PRAS40 and androgen receptor and increase in FOXO3a were observed in treated group. Notably, no overt organ toxicity was noted in Ch-319 treated animals. Our studies identify Akt/FOXO3a signaling as a target of triphenyltin (IV) carboxylate Ch-319 and provide a molecular basis of its growth inhibitory effect in PCa cells. We propose that Ch-319 has the potential to be developed as an anticancer agent against PCa.
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8
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Yousuf I, Zeeshan M, Arjmand F, Rizvi MA, Tabassum S. Synthesis, structural investigations and DNA cleavage properties of a new water soluble Cu(II)–iminodiacetate complex. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.05.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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9
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Structural analysis and biological functionalities of iron(III)– and manganese(III)–thiosemicarbazone complexes: in vitro anti-proliferative activity on human cancer cells, DNA binding and cleavage studies. J Biol Inorg Chem 2019; 24:365-376. [DOI: 10.1007/s00775-019-01653-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 03/13/2019] [Indexed: 01/28/2023]
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10
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11
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Pansare AV, Kulal DK, Shedge AA, Patil VR. hsDNA groove binding, photocatalytic activity, and in vitro breast and colon cancer cell reducing function of greener SeNPs. Dalton Trans 2018; 45:12144-55. [PMID: 27402164 DOI: 10.1039/c6dt01457g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Selenium nanoparticles (SeNPs) have attracted great attention because of their superior optical properties and wide utilization in biological and biomedical studies. This paper reports an environmentally benign procedure of greener monodispersible SeNP synthesis using the reducing power of Trigonella foenum-graecum extract, characterization and their protective effect against unfolded (Herring sperm DNA) hsDNA. We investigated the anti-cancer activity of SeNPs against MCF-7, MDA MB 435 and COLO-205 cells. The photocatalytic activity of SeNPs was investigated for the degradation of a Sunset Yellow FCF (SYFCF) dye using ultraviolet-B light. The reduction of the Se ion to SeNPs was monitored by ultraviolet-visible spectroscopy (UV-vis). The size and morphology of the SeNPs were characterized by high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), and Dynamic Light Scattering (DLS). The SeNPs were stable, and the diameter was homogeneous at around 5-12 nm. Interactions of various concentrations of SeNPs with hsDNA were systematically investigated by UV-vis, fluorescence, circular dichroism (CD), polarimetry and FTIR spectroscopy under physiological conditions. The results from fluorescence spectroscopy indicated that SeNPs quenched the fluorescence intensity of hsDNA with increasing concentrations. The modified Stern-Volmer quenching rate constant Ksv, binding constant K and binding sites n at different temperatures and the corresponding thermodynamic parameters ΔH°, ΔG° and ΔS° were calculated. Hoechst 33258 and methyl green (MG) site markers, melting experiment (Tm), viscosity measurements and sequence specificity verification by DNA bases clarified that SeNPs bind to hsDNA via a groove site. The rate of photocatalytic degradation of the SYFCF dye in the presence and absence of photocatalysts (SeNPs) was studied using UV-vis, the results showed appreciable degradation of the SYFCF dye. Our results suggested that nano Se can be used as a promising selenium species with potential application in cancer treatment. These nanoparticles were found to be the most active cytotoxic agent prepared in a new green synthesis manner, causing >50% inhibition of MCF-7, MDA MB-435 and COLO-205 cell proliferation at concentrations <10(-7) M. Hence these SeNPs could be recognized as promising materials for biomedical applications.
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Affiliation(s)
- Amol V Pansare
- Department of Chemistry, University of Mumbai, Santacruz (E), Mumbai 400098, India.
| | - Dnyaneshwar K Kulal
- Department of Chemistry, University of Mumbai, Santacruz (E), Mumbai 400098, India.
| | - Amol A Shedge
- Department of Chemistry, University of Mumbai, Santacruz (E), Mumbai 400098, India.
| | - Vishwanath R Patil
- Department of Chemistry, University of Mumbai, Santacruz (E), Mumbai 400098, India.
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12
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Singh N, Srivastav N, Singh R, Kaur V, Brendler E, Wagler J, Kroke E. Fluorescent biogenic Schiff base compounds of dimethyltin. NEW J CHEM 2018. [DOI: 10.1039/c7nj03731g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorescent biogenic Schiff base compounds of dimethyltin featuring distinct coordination sphere in solid and solution phase.
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Affiliation(s)
- Navjot Singh
- Department of Chemistry
- Panjab University
- Chandigarh-160014
- India
| | - Neha Srivastav
- Department of Chemistry
- Panjab University
- Chandigarh-160014
- India
| | | | - Varinder Kaur
- Department of Chemistry
- Panjab University
- Chandigarh-160014
- India
| | - Erica Brendler
- Institut für Analytische Chemie
- Technische Universität Bergakademie
- Freiberg – 09596
- Germany
| | - Jörg Wagler
- Institut für Anorganische Chemie
- Technische Universität Bergakademie
- Freiberg – 09596
- Germany
| | - Edwin Kroke
- Institut für Anorganische Chemie
- Technische Universität Bergakademie
- Freiberg – 09596
- Germany
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13
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Tabassum S, Ahmad M, Afzal M, Zaki M, Faizi MSH, Ali A. Synthesis and crystal structure determination of cobalt(II) mixed-ligand complex containing 1,10-phenanthroline and 5-(2-carboxybenzyloxy)isophthalic acid: Their biological evaluation viz. DNA/protein binding profile, pBR322 DNA cleavage activity. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2016.07.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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14
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Pansare AV, Kulal DK, Shedge AA, Patil VR. Green synthesis of anticancerous honeycomb PtNPs clusters: Their alteration effect on BSA and HsDNA using fluorescence probe. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 162:473-485. [DOI: 10.1016/j.jphotobiol.2016.07.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Accepted: 07/18/2016] [Indexed: 10/21/2022]
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15
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Arjmand F, Sharma S, Usman M, Leu BM, Hu MY, Toupet L, Gosztola D, Tabassum S. Vibrational dynamics (IR, Raman, NRVS) and a DFT study of a new antitumor tetranuclearstannoxane cluster, Sn(iv)-oxo-{di-o-vanillin} dimethyl dichloride. Phys Chem Chem Phys 2016; 18:17805-17809. [PMID: 27328161 DOI: 10.1039/c6cp02914k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
The vibrational dynamics of a newly synthesized tetrastannoxane was characterized with a combination of experimental (Raman, IR and tin-based nuclear resonance vibrational spectroscopy) and computational (DFT/B3LYP) methods, with an emphasis on the vibrations of the tin sites. The cytotoxic activity revealed a significant regression selectively against the human pancreatic cell lines.
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Affiliation(s)
- F Arjmand
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India.
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16
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Selvaganapathy M, Pravin N, Muniyandi V, Nazeer M, Raman N. Exploring the photochemosensitivity by novel cysteine-based mixed ligand complexes. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 157:77-88. [PMID: 26894848 DOI: 10.1016/j.jphotobiol.2016.02.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 02/03/2016] [Indexed: 11/25/2022]
Abstract
A new series of cysteine-based metal(II) complexes with 2,2'-bipyridine or 1,10-phenanthroline as co-ligand have been prepared and characterized. Their DNA binding and cleavage properties have been studied. The analytical and spectroscopic data of complexes 1-18 reveal that the complexes adopt an octahedral geometry around the central metal ion in which the cysteine is coordinated through NS and NN atoms, respectively. Spectroscopic titration and viscosity measurements reveal that the complexes bind to DNA through an intercalative mode. Electrophoresis measurements exhibit that they cleave pBR322 DNA efficiently in the presence of 3-mercaptopropionic acid (MPA), probably via hydrolytic mechanism with the involvement of (•)OH. The in vitro anticancer activities indicate that the Cu(II) complexes are active against four selected human tumor cell lines. Furthermore, it is remarkable that all the complexes exhibit significant photocytotoxicity against human breast cancer cell lines (MCF-7) with a potency more than the widely used drugs photofrin and cisplatin indicating that they have the potential to act as effective anticancer drugs in a dose-dependent manner.
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Affiliation(s)
| | - Narayanaperumal Pravin
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - Vellaichamy Muniyandi
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - Mohammed Nazeer
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India
| | - Natarajan Raman
- Research Department of Chemistry, VHNSN College, Virudhunagar 626 001, Tamil Nadu, India.
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17
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Barreiro S, Durán-Carril ML, Viqueira J, Sousa-Pedrares A, García-Vázquez JA, Romero J. Structural studies and bioactivity of diorganotin(IV) complexes of pyridin-2-thionato derivatives. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2015.05.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Yadav S, Yousuf I, Usman M, Ahmad M, Arjmand F, Tabassum S. Synthesis and spectroscopic characterization of diorganotin( iv) complexes of N′-(4-hydroxypent-3-en-2-ylidene)isonicotinohydrazide: chemotherapeutic potential validation by in vitro interaction studies with DNA/HSA, DFT, molecular docking and cytotoxic activity. RSC Adv 2015; 5:50673-50690. [DOI: 10.1039/c5ra06953j] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023] Open
Abstract
A diorganotin(iv) hydrazide complex as a potential cancer chemotherapeutic agent targeting DNA using the carrier protein HSA.
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Affiliation(s)
- Shipra Yadav
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Imtiyaz Yousuf
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Mohammad Usman
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Musheer Ahmad
- Department of Applied Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Farukh Arjmand
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Sartaj Tabassum
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
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19
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Arjmand F, Yousuf I, Zaidi Y, Toupet L. Crystal structure determination, spectroscopic characterization and biological profile of a tailored ionic molecular entity, Sn(iv) iminodiacetic acid–piperazinediium conjugate: in vitro DNA/RNA binding studies, Topo I inhibition activity, cytotoxic and systemic toxicity studies. RSC Adv 2015. [DOI: 10.1039/c4ra13718c] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In vitro DNA/RNA binding studies and cytotoxic activity of complex 1 along with its in vivo systemic toxicity assay.
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Affiliation(s)
- Farukh Arjmand
- Department of Chemistry
- Aligarh Muslim University
- Aligarh 202002
- India
| | - Imtiyaz Yousuf
- Department of Chemistry
- Aligarh Muslim University
- Aligarh 202002
- India
| | - Yusra Zaidi
- Department of Zoology
- Aligarh Muslim University
- Aligarh 202002
- India
| | - Loic Toupet
- Institut de Physique de Rennes
- UMR 625
- Université de Rennes 1
- 35042 Rennes, Cedex
- France
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20
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Tabassum S, Asim A, Khan RA, Arjmand F, Rajakumar D, Balaji P, Akbarsha MA. A multifunctional molecular entity Cu II–Sn IV heterobimetallic complex as a potential cancer chemotherapeutic agent: DNA binding/cleavage, SOD mimetic, topoisomerase Iα inhibitory and in vitro cytotoxic activities. RSC Adv 2015; 5:47439-47450. [DOI: 10.1039/c5ra07333b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023] Open
Abstract
New chiral l-valine-derived Schiff base complexes with the bioactive heterocyclic ligand scaffold pyrazole (Hpz) were designed and synthesized with a view to find their potential as anticancer chemotherapeutic drug candidates.
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Affiliation(s)
- Sartaj Tabassum
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Ahmad Asim
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Rais Ahmad Khan
- Department of Chemistry
- King Saud University
- Riyadh
- Kingdom of Saudi Arabia
| | - Farukh Arjmand
- Department of Chemistry
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Dhivya Rajakumar
- Department of Biomedical Science
- Bharathidasan University
- Tiruchirappalli 620 024
- India
| | - Perumalsamy Balaji
- Department of Biomedical Science
- Bharathidasan University
- Tiruchirappalli 620 024
- India
| | - Mohammad Abdulkader Akbarsha
- Mahatma Gandhi-Doerenkamp Center (MGDC) for Alternatives to Use of Animals in Life Science Education
- Bharathidasan University
- Tiruchirappalli 620 024
- India
- Department of Food Science and Nutrition
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Synthesis and structure elucidation of a copper(II) Schiff-base complex: In vitro DNA binding, pBR322 plasmid cleavage and HSA binding studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 140:321-31. [PMID: 25222146 DOI: 10.1016/j.jphotobiol.2014.08.015] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Revised: 07/31/2014] [Accepted: 08/24/2014] [Indexed: 11/18/2022]
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22
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Alizadeh R, Afzal M, Arjmand F. In vitro DNA binding, pBR322 plasmid cleavage and molecular modeling study of chiral benzothiazole Schiff-base-valine Cu(II) and Zn(II) complexes to evaluate their enantiomeric biological disposition for molecular target DNA. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 131:625-635. [PMID: 24879574 DOI: 10.1016/j.saa.2014.04.051] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 03/07/2014] [Accepted: 04/07/2014] [Indexed: 06/03/2023]
Abstract
Bicyclic heterocyclic compounds viz. benzothiazoles are key components of deoxyribonucleic acid (DNA) molecules and participate directly in the encoding of genetic information. Benzothiazoles, therefore, represent a potent and selective class of antitumor compounds. The design and synthesis of chiral antitumor chemotherapeutic agents of Cu(II) and Zn(II), L- and -D benzothiazole Schiff base-valine complexes 1a &b and 2a &b, respectively were carried out and thoroughly characterized by spectroscopic and analytical techniques. Interaction of 1a and b and 2a and b with CT DNA by employing UV-vis, florescence, circular dichroic methods and cleavage studies of 1a with pBR322 plasmid, molecular docking were done in order to demonstrate their enantiomeric disposition toward the molecular drug target DNA. Interestingly, these studies unambiguously demonstrated the greater potency of L-enantiomer in comparison to D-enantiomer.
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Affiliation(s)
- Rahman Alizadeh
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Mohd Afzal
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Farukh Arjmand
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India.
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23
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Vijayan P, Viswanathamurthi P, Silambarasan V, Velmurugan D, Velmurugan K, Nandhakumar R, Butcher RJ, Silambarasan T, Dhandapani R. Dissymmetric thiosemicarbazone ligands containing substituted aldehyde arm and their ruthenium(II) carbonyl complexes with PPh3/AsPh3 as ancillary ligands: Synthesis, structural characterization, DNA/BSA interaction and in vitro anticancer activity. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.06.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tabassum S, Zaki M, Ahmad M, Afzal M, Srivastav S, Srikrishna S, Arjmand F. Synthesis and crystal structure determination of copper(II)-complex: In vitro DNA and HSA binding, pBR322 plasmid cleavage, cell imaging and cytotoxic studies. Eur J Med Chem 2014; 83:141-54. [PMID: 24953031 DOI: 10.1016/j.ejmech.2014.06.018] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 06/05/2014] [Accepted: 06/09/2014] [Indexed: 11/28/2022]
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25
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Arjmand F, Muddassir M, Yousuf I. Design and synthesis of enantiomeric (R)- and (S)-copper(II) and diorganotin(IV)-based antitumor agents: their in vitro DNA binding profile, cleavage efficiency and cytotoxicity studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2014; 136:62-71. [PMID: 24857791 DOI: 10.1016/j.jphotobiol.2014.04.024] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 04/12/2014] [Accepted: 04/26/2014] [Indexed: 10/25/2022]
Abstract
New chiral reduced Schiff base ligands (R)/(S)-2-(2-hydroxy-1-phenylethylaminomethyl)phenol (L), (R)/(S)-2-(benzylamino)-2-phenylethanol (L') and their Cu(II)/organotin(IV) complexes (1-4) were synthesized and thoroughly characterized. Preliminary in vitro DNA binding studies of (R)- and (S)-enantiomeric pairs of ligands L, L' and complexes 1-4 were carried out employing UV-vis, fluorescence and circular dichroic techniques to evaluate their enantioselective DNA binding potential, thereby to act as antitumor chemotherapeutic drug entities. The observations demonstrated that S-enantiomer of Cu(II) complex, 1 binds more avidly to DNA in comparison to its R-enantiomeric form and organotin(IV) complex 2. This was further established by Kb and Ksv values of ligands L and L' and (S)-/(R)-1-4 complexes, which demonstrated multifold increase in case of S-enantiomer of copper complex 1 in comparison to its R-enantiomeric form. This clearly demonstrates the chiral preference of S-enantiomer over R-enantiomer and its potency to act as a chemotherapeutic agent. Cleavage studies of 1-4 with pBR322 plasmid DNA were carried out, noticeably, S-enantiomer of complex 1 exhibited effective DNA cleavage efficiency in absence of external agents. The cytotoxicity of ligands L and L' and (S)-/(R)-1-4 complexes was examined on a panel of 19 human tumor cell lines of different histological origins by SRB assay. In the both the cases, the S-enantiomer of complex 1 and 3 revealed remarkably good cytotoxic activity (GI50 values <10) against T24 (Urinary Bladder), DU145 (Prostate), U373MG (Astrocytoma) and HCT15, SW620 (Colon) clearly underlining the influence of enantiomeric discrimination. Interestingly, ligands L, L' and rest of the complexes demonstrated moderate cytotoxic activity (GI50 values <40).
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Affiliation(s)
- Farukh Arjmand
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India.
| | - Mohd Muddassir
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
| | - Imtiyaz Yousuf
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
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26
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Singh R, Afzal M, Zaki M, Ahmad M, Tabassum S, Bharadwaj PK. Synthesis, structure elucidation and DFT studies of a new coumarin-derived Zn( ii) complex: in vitro DNA/HSA binding profile and pBR322 cleavage pathway. RSC Adv 2014; 4:43504-43515. [DOI: 10.1039/c4ra05637j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023] Open
Abstract
A new mononuclear coumarin-derived Zn(ii) complex was designed and synthesized, and its interactions with DNA and protein were analyzed.
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Affiliation(s)
- Ruchi Singh
- Department of Chemistry
- Indian Institute of Technology Kanpur
- , India
| | - Mohd. Afzal
- Department of Chemistry
- Aligarh Muslim University
- , India
| | - Mehvash Zaki
- Department of Chemistry
- Aligarh Muslim University
- , India
| | - Musheer Ahmad
- Department of Chemistry
- Indian Institute of Technology Kanpur
- , India
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Tabassum S, Asim A, Khan RA, Hussain Z, Srivastav S, Srikrishna S, Arjmand F. Chiral heterobimetallic complexes targeting human DNA-topoisomerase Iα. Dalton Trans 2013; 42:16749-16761. [PMID: 24077532 DOI: 10.1039/c3dt51209f] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
The chiral monometallic Cu(II) (1) and Zn(II) (2) and heterobimetallic Cu(II)-Sn(IV) and Zn(II)-Sn(IV) complexes with tridentate chiral Schiff base -ONO-ligand in the presence of nitrogen donor heterocyclic ligand imidazole; were prepared and characterized by various physico-chemical and spectroscopic methods. Preliminary complex-DNA interaction studies employing optical methods revealed that 3 displayed a higher propensity towards the drug target DNA double helix and recommended predominantly an electrostatic mode of interaction as well as a groove binding affinity of the complex with CT-DNA. This was quantified by Kb and KSV values of complexes 1-4, which demonstrated a multifold increase in complex 3 binding to CT DNA and clearly demonstrates its potency to act as a chemotherapeutic agent. Furthermore, the gel electrophoretic patterns of supercoiled pBR322 DNA with varying concentrations of complex 3 exhibits the ability to cleave DNA and follow a freely diffusible radical mechanism. The antiproliferative effects of complex 3 on human hepatoma cancer cells (Huh7) was investigated. Human Topo I inhibition assay by complex 3 was performed and results confirmed significantly good activity at lower concentrations than some of the classical Topo I inhibitors. Additionally, complex 3 was investigated for the expression of MMP-2 and TGF-β by real time PCR. The cellular uptake of complex 3 by HeLa cells was studied by confocal microscopy.
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Affiliation(s)
- Sartaj Tabassum
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India.
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28
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Khan RA, Yadav S, Hussain Z, Arjmand F, Tabassum S. Carbohydrate linked organotin(IV) complexes as human topoisomerase Iα inhibitor and their antiproliferative effects against the human carcinoma cell line. Dalton Trans 2013; 43:2534-48. [PMID: 24310209 DOI: 10.1039/c3dt51973b] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Dimethyltin(IV) complexes with ethanolamine (1) and biologically significant N-glycosides (2 and 3) were designed and synthesized. The structural elucidation of complexes 1-3 was done using elemental and spectroscopic methods; in addition, complex 1 was studied by single crystal X-ray diffraction studies. The in vitro DNA binding profile of complexes 2 and 3 was carried out by employing different biophysical methods to ascertain the feasibility of glycosylated complexes. Further, the cleaving ability of 2 and 3 was investigated by the agarose gel electrophoretic mobility assay with supercoiled pBR322 DNA, and demonstrated significantly good nuclease activity. Furthermore, both the complexes exhibited significant inhibitory effects on the catalytic activity of human Topo I at lower concentration than standard drugs. Computer-aided molecular docking techniques were used to ascertain the mode and mechanism of action towards the molecular target DNA and Topo I. The cytotoxicity of 2 and 3 against human hepatoma cancer cells (Huh7) was evaluated, which revealed significant regression in cancerous cells as compared with the standard drug. The antiproliferative activities of 2 and 3 were tested against human hepatoma cancer cells (Huh7), and results showed significantly good activity. Additionally, to validate the remarkable antiproliferative activity of complexes 2 and 3, specific regulatory gene expression (MMP-2 and TGF-β) was obtained by real time PCR.
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Affiliation(s)
- Rais Ahmad Khan
- Department of Chemistry, Aligarh Muslim University, Aligarh - 202002, India.
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Arjmand F, Yousuf I. Synthesis, characterization and in vitro DNA binding of chromone Schiff base organotin(IV) complexes. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.06.018] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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