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Kushwaha A, Srivastava D, Prakash O, Kociok-Köhn G, Gosavi SW, Chauhan R, Muddassir M, Kumar A. 1,1'-Bis-(diphenylphosphino)ferrocene appended d 8- and d 10-configuration based thiosquarates: the molecular and electronic configurational insights into their sensitization and co-sensitization properties for dye sensitized solar cells. Dalton Trans 2024; 53:6818-6829. [PMID: 38546210 DOI: 10.1039/d4dt00151f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Three new d8- and d10-configuration based 1,1'-bis-(diphenylphosphino)ferrocene (dppf) appended thiosquarates complexes with general composition [M(mtsq)2dppf] (M = Ni2+ (NiL2); Zn2+ (ZnL2) and Cd2+ (CdL2)) (mtsq = 3-ethoxycyclobutenedione-4-thiolate) have been synthesized and characterized spectroscopically as well as in case of NiL2 by single crystal X-ray diffraction technique. The single crystal X-ray analysis reveals square planar geometry around Ni(II) in NiL2, where Ni(II) coordinates with two sulfur centres of two mtsq ligands in monodentate fashion and two phosphorus of a dppf ligand in chelating mode. The supramolecular architecture of NiL2 is sustained by intermolecular C-H⋯O interactions to form one-dimensional chain. Further, the application of these newly synthesized complexes as sensitizers and co-sensitizers/co-absorbents with ruthenium based N719 sensitizer in dye-sensitized solar cells (DSSCs) have been explored. The DSSC set-up based on NiL2 offers best photovoltaic performance with photovoltaic efficiency (η) 5.12%, short-circuit current (Jsc) 11.60 mA cm-2, open circuit potential (Voc) 0.690 V and incident photon to current conversion efficiency (IPCE) 63%. In co-sensitized DSSC set-up, ZnL2 along with state-of-the-art N719 dye displays best photovoltaic performance with η 6.65%, Jsc 14.47 mA cm-2, Voc 0.729 V and IPCE 69%, thereby showing an improvement by 15.25% in photovoltaic efficiency in comparison to the photovoltaic efficiency of N719 sensitized DSSC set-up. Variation in co-sensitization behaviour have been ascribed to the differences in the excited state energy level of co-sensitizers. The ZnL2 and CdL2 have a higher energy level position than N719 dye, allowing efficient electron transfer to N719 during light irradiation, while excited state of NiL2 is lower than N719 dye, preventing photoexcited electron transfer to N719, resulting in its lowest overall efficiency among the three co-sensitized DSSC setups.
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Affiliation(s)
- Aparna Kushwaha
- Department of Chemistry, Faculty of Science, University of Lucknow, Lucknow 226 007, India.
| | - Devyani Srivastava
- Department of Chemistry, Faculty of Science, University of Lucknow, Lucknow 226 007, India.
| | - Om Prakash
- Department of Chemistry, Faculty of Science, University of Lucknow, Lucknow 226 007, India.
| | - Gabriele Kociok-Köhn
- Materials and Chemical Characterisation Facility (MC2), University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Suresh W Gosavi
- Department of Physics, Savitribai Phule Pune University, Pune-411007, India
| | - Ratna Chauhan
- Department of Environmental Science, Savitribai Phule Pune University, Pune-411007, India.
| | - Mohd Muddassir
- Department of Chemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abhinav Kumar
- Department of Chemistry, Faculty of Science, University of Lucknow, Lucknow 226 007, India.
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Bajaj M, Muddassir M, Choi B, Singh P, Park JB, Singh S, Yadav M, Kumar R, Eom K, Sharma D. Single-molecule analysis of osmolyte-mediated nanomechanical unfolding behavior of a protein domain. Int J Biol Macromol 2023; 253:126849. [PMID: 37717878 DOI: 10.1016/j.ijbiomac.2023.126849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 08/25/2023] [Accepted: 09/09/2023] [Indexed: 09/19/2023]
Abstract
The small organic molecules, known as osmolytes being ubiquitously present in different cell types, affect protein folding, stability and aggregation. However, it is unknown how the osmolytes affect the nanomechanical unfolding behavior of protein domain. Here, we show the osmolyte-dependent mechanical unfolding properties of protein titin immunoglobulin-27 (I27) domain using an atomic force microscopy (AFM)-based single-molecule force spectroscopy. We found that amines and methylamines improved the mechanical stability of I27 domain, whereas polyols had no effect. Interestingly, glycine betaine (GB) or trimethylamine-N-oxide (TMAO) increased the average unfolding force of the protein domain. The kinetic parameters analyzed at single-molecule level reveal that stabilizing effect of osmolytes is due to a decrease in the unfolding rate constant of I27, which was confirmed by molecular dynamics simulations. Our study reveals different effects that diverse osmolytes have on the mechanical properties of the protein, and suggests the potential use of osmolytes in modulating the mechanical stability of proteins required for various nano-biotechnological applications.
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Affiliation(s)
- Manish Bajaj
- Council of Scientific and Industrial Research - Institute of Microbial Technology, Sector-39A, Chandigarh, India
| | - Mohd Muddassir
- Council of Scientific and Industrial Research - Institute of Microbial Technology, Sector-39A, Chandigarh, India; Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Bumjoon Choi
- Biomechanics Laboratory, College of Sport Science, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea; Digial Bio R&D Center, Mediazen, Seoul 07789, Republic of Korea
| | - Priyanka Singh
- Council of Scientific and Industrial Research - Institute of Microbial Technology, Sector-39A, Chandigarh, India
| | - Jong Bum Park
- Biomechanics Laboratory, College of Sport Science, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea
| | - Surjeet Singh
- Council of Scientific and Industrial Research - Institute of Microbial Technology, Sector-39A, Chandigarh, India
| | - Manisha Yadav
- School of Basic and Applied Sciences, Central University of Punjab, Bathinda, India
| | - Rajesh Kumar
- School of Basic and Applied Sciences, Central University of Punjab, Bathinda, India
| | - Kilho Eom
- Biomechanics Laboratory, College of Sport Science, Sungkyunkwan University (SKKU), Suwon 16419, Republic of Korea.
| | - Deepak Sharma
- Council of Scientific and Industrial Research - Institute of Microbial Technology, Sector-39A, Chandigarh, India; Academy of Scientific & Innovative Research, India.
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Li NN, Xu XY, Qiu P, Li YX, Yu XS, Gao YE, Ren HX, Muddassir M, Lin WY, Zong ZA. A novel AIE material for sensing of Erythromycin in pure water by hydrogen bond in portable test strips and cellular imaging applications. Spectrochim Acta A Mol Biomol Spectrosc 2023; 303:123272. [PMID: 37607455 DOI: 10.1016/j.saa.2023.123272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/13/2023] [Accepted: 08/16/2023] [Indexed: 08/24/2023]
Abstract
Erythromycin could be used to treat various bacterial infection, but it was harmful to the colonic microflora. Therefore, it is highly desirable to develop a fluorescence probe that could selectively and sensitively detect Erythromycin in pure water. In this work, a fluorescent probe named EHMC, which exhibited aggregation-induced emission (AIE) characteristic in solid state and water/EtOH binary solvent was developed for "turn on" sensing Erythromycin in pure water with high selectivity and sensitivity (detection limit: 1.78 × 10-8 M). Also, there are fewer interference from other antibiotics in the detection process of probe EHMC for Erythromycin. Moreover, probe EHMC could as a portable test strips for highly selective detection of Erythromycin and identification of different concentrations of Erythromycin. In addition, living cells imaging experiments displayed that probe EHMC could detect Erythromycin in A549 cells and BEAS-2B cells successfully. Combined with the theoretical calculation results The sensing mechanisms that the CO in Erythromycin and OH in EHMC formed intermolecular hydrogen bond and further formed new aggregates were confirmed by job' plot, 1H NMR, FT-IR, ESI-MS, DLS and TEM and DFT calculation.
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Affiliation(s)
- Na-Na Li
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi 034000, China; Modern Industrial College of Biomedicine and Great Health, Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Xing-Yu Xu
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi 034000, China
| | - Ping Qiu
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi 034000, China
| | - Yong-X Li
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi 034000, China
| | - Xiong-Sheng Yu
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi 034000, China
| | - Yong-E Gao
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi 034000, China
| | - Hai-Xian Ren
- Department of Chemistry, Xinzhou Normal University, Xinzhou, Shanxi 034000, China
| | - Mohd Muddassir
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Wan-Ying Lin
- Modern Industrial College of Biomedicine and Great Health, Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China
| | - Zi-Ao Zong
- Modern Industrial College of Biomedicine and Great Health, Youjiang Medical University for Nationalities, Baise, Guangxi 533000, China.
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Afzal M, Alarifi A, Mahmoud Karami A, Ayub R, Abduh NAY, Sharaf Saeed W, Muddassir M. Activating the delivery of a model drug to lipid membrane by encapsulation of cyclodextrin: Combined experimental and molecular docking studies. Spectrochim Acta A Mol Biomol Spectrosc 2023; 302:123038. [PMID: 37348276 DOI: 10.1016/j.saa.2023.123038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 06/06/2023] [Accepted: 06/16/2023] [Indexed: 06/24/2023]
Abstract
Drug delivery science is always an important topic as it studies the delivery of therapeutic payloads to the desired target cells without affecting the healthy tissues/cells, thus minimizing drug-induced toxicity. Aiming towards the targeted drug delivery, the present project deals with the delivery of a polarity-sensitive solvatochromic model drug, namely, salt of 8-anilinonaphthalene-1-sulphonic acid (ANSA) to the model bio-membrane (which mimic several aspects of the real cell membrane), more precisely at the lipid-water interface of L-α-Dipalmitoylphosphatidylcholine (DPPC) phospholipid. The drug delivery process has been activated through the binding of dye with cyclodextrin, acting as a drug transporter. Detailed steady-state and time-resolved spectroscopic studies including molecular docking analysis imply the targeted drug delivery of dye, ANSA, towards the lipid-water interface region of lipid bilayers through encapsulation within the cyclodextrin void. Stronger binding interaction of the dye with the lipid bilayers relative to β-cyclodextrin (β-CD) is the foremost reason for the targeted delivery. The present biophysical interaction studies of drug-lipid interaction, thus, may provide a cordial approach for drug formulation and drug delivery.
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Affiliation(s)
- Mohd Afzal
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
| | - Abdullah Alarifi
- Department of Science Technology Unit, King Saud University, P.O.Box-2454, Riyadh 11451, Saudi Arabia
| | | | - Rashid Ayub
- Department of Science Technology Unit, King Saud University, P.O.Box-2454, Riyadh 11451, Saudi Arabia
| | - Naaser A Y Abduh
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Waseem Sharaf Saeed
- Restorative Dental Sciences Department, College of Dentistry, King Saud University, Riyadh 11545, Saudi Arabia
| | - Mohd Muddassir
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Afzal M, Alarifi A, Abduh NAY, Ayub A, Muddassir M. Identification of anti-cancer organometallic compounds by inhibition of BCL-2/Bax interactions. Comput Biol Med 2023; 167:107657. [PMID: 37931525 DOI: 10.1016/j.compbiomed.2023.107657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 10/21/2023] [Accepted: 10/31/2023] [Indexed: 11/08/2023]
Abstract
Apoptosis is regulated by the BCL-2 family, which includes the anti-apoptotic and pro-apoptotic proteins (Bax, Bok, Bak, etc.). These proteins often interact in dimers and act as apoptotic switches. Anti-apoptotic proteins, such as BCL-2, block the functions of these pro-apoptotic proteins. The pro-apoptotic and anti-apoptotic protein-protein interactions must be inhibited to prevent tumor cells from escaping apoptosis. This method has been used to develop anticancer drugs by inhibiting BCL-2 with both natural and synthetic compounds. Metal-containing compounds were used as pharmaceuticals for human cancer patients for a long time, and cisplatin was the first candidate of this class. Drug design, however, needs to pay more attention to metal complexes. We have studied the X-ray crystal structure of the BCL-2 protein in detail and identified the hydrophobic nature of the site with two less solvent-accessible sites. Based on the hydrophobic nature of the compounds, 74 organometallic compounds with X-ray crystallographically characterized bioactivity (including anticancer activity) were selected from the Cambridge crystallographic database. For testing, molecular docking was used to determine which compound was most effective against the BCL-2 protein. Organometallic compounds (benzene)-chloro-(1-{[(9H-fluoren-2-yl)imino]methyl}naphthalen-2-olato)-ruthenium (2), (1-((1,1'-biphenyl)-4-yl)-2,3,4,5-tetramethylcyclopentadienyl)-chloro-(4,4'-dimethyl-2,2'-bipyridine)-rhodium hexafluorophosphate (37), (μ-1,1'-(butane-1,4-diyl)bis(3-oxy-2-methylpyridin-4(1H)-one))-dichloro-bis(pentamethyl-cyclopentadienyl)-di-rhodium tetrahydrate (46), (μ-1,1'-(butane-1,4-diyl)bis(3-oxy-2-methylpyridin-4(1H)-one))-dichloro-bis(pentamethyl-cyclopentadienyl)-di-iridium (47) etc are found to be important compounds in this study. The capability of different types of complex interactions was identified using Hirshfeld surface analysis of the complexes. A NCI plot was conducted to understand the nature of the interaction between complex amino acids and active-site amino acids. A DFT study was conducted to examine the stability and chemical reactivity of the selected complexes. Using this study, one suitable hydrophobic lead anti-cancer organometallic pharmaceutical was found that binds at the less solvent-accessible hydrophobic site of BCL-2.
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Affiliation(s)
- Mohd Afzal
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Abdullah Alarifi
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Naaser A Y Abduh
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Arusha Ayub
- Department of Medicine and Health Sciences, University of Georgia, P.O. Box-0171, Tbilisi, Georgia
| | - Mohd Muddassir
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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6
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Bin HS, Hu H, Wang J, Lu L, Muddassir M, Srivastava D, Chauhan R, Wu Y, Wang X, Kumar A. New 5,5-(1,4-Phenylenebis(methyleneoxy)diisophthalic Acid Appended Zn(II) and Cd(II) MOFs as Potent Photocatalysts for Nitrophenols. Molecules 2023; 28:7180. [PMID: 37894661 PMCID: PMC10608887 DOI: 10.3390/molecules28207180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/11/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Metal-organic frameworks (MOFs) are peculiar multimodal materials that find photocatalytic applications for the decomposition of lethal molecules present in the wastewater. In this investigation, two new d10-configuration-based MOFs, [Zn2(L)(H2O)(bbi)] (1) and [Cd2(L)(bbi)] (2) (5,5-(1,4-phenylenebis(methyleneoxy)diisophthalic acid (H2L) and 1,1'-(1,4-butanediyl)bis(imidazole) (bbi)), have been synthesized and characterized. The MOF 1 displayed a (4,6)-connected (3.43.52)(32.44.52.66.7) network topology, while 2 had a (3,10)-connected network with a Schläfli symbol of (410.511.622.72)(43)2. These MOFs have been employed as photocatalysts to photodegrade nitrophenolic compounds, especially p-nitrophenol (PNP). The photocatalysis studies reveal that 1 displayed relatively better photocatalytic performance than 2. Further, the photocatalytic efficacy of 1 has been assessed by altering the initial PNP concentration and photocatalyst dosage, which suggest that at 80 ppm PNP concentration and at its 50 mg concentration the MOF 1 can photo-decompose around 90.01% of PNP in 50 min. Further, radical scavenging experiments reveal that holes present over 1 and ·OH radicals collectively catalyze the photodecomposition of PNP. In addition, utilizing density of states (DOS) calculations and Hirshfeld surface analyses, a plausible photocatalysis mechanism for nitrophenol degradation has been postulated.
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Affiliation(s)
- Hui-Shi Bin
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong 643000, China (L.L.)
| | - Hai Hu
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong 643000, China (L.L.)
| | - Jun Wang
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong 643000, China (L.L.)
| | - Lu Lu
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong 643000, China (L.L.)
| | - Mohd Muddassir
- Department of Chemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Devyani Srivastava
- Department of Chemistry, Faculty of Science, University of Lucknow, Lucknow 226007, India;
| | - Ratna Chauhan
- Department of Environmental Science, Savitribai Phule Pune University, Pune 411007, India
| | - Yu Wu
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering, Zigong 643000, China (L.L.)
| | - Xiaoxiong Wang
- School of Materials and Environmental Engineering, Shenzhen Polytechnic University, Shenzhen 518055, China
| | - Abhinav Kumar
- Department of Chemistry, Faculty of Science, University of Lucknow, Lucknow 226007, India;
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Zhong Y, Peng Z, Peng Y, Li B, Pan Y, Ouyang Q, Sakiyama H, Muddassir M, Liu J. Construction of Fe-doped ZIF-8/DOX nanocomposites for ferroptosis strategy in the treatment of breast cancer. J Mater Chem B 2023. [PMID: 37350051 DOI: 10.1039/d3tb00749a] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Abstract
Breast cancer has become one of the top five commonest causes of cancer death. The use of ferroptosis to induce the generation of reactive oxygen species (ROS) in cancer cells presents a promising and potential strategy for cancer treatment. Herein, a series of facile bimetallic nanoparticles (x% Fe-doped ZIF-8) were synthesized and tested, and doxorubicin (DOX), a classic drug for breast cancer therapy, was encapsulated. After comparing the ratios of Fe2+/(Fe2+ + Zn2+), 7% Fe-doped ZIF-8 (7FZ) was found to be the most suitable particle for medical application. The drug loading efficiency of DOX@7FZ was 58.01 ± 0.02%. The pH-sensitive DOX@7FZ was degraded and DOX was released in lysosomes once internalized. Both the intracellular content of iron and ROS increased significantly. Meanwhile, the cell viability declined to 13.98% in 24 h at a concentration of 60 μg mL-1 and the IC50 was 42.68 μg mL-1. Moreover, the expression of Bcl-2 and GPX-4 proteins decreased in a time-dependent manner, indicating that DOX@7FZ was able to enhance the ROS level in cancer cells via a synergistic effect between apoptosis and ferroptosis. The mechanism of action of DOX@7FZ was further verified using hematoxylin and eosin staining and immunohistochemical staining of Bcl-2 and GPX-4. These remarkable characteristics of DOX@7FZ may inspire further advancements in the treatment of breast cancer.
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Affiliation(s)
- Yuyu Zhong
- Key Laboratory of Research and Development of Natural Drugs, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, and School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China.
| | - Zhaoxi Peng
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Yanqiong Peng
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523808, China.
| | - Bo Li
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
| | - Ying Pan
- Key Laboratory of Research and Development of Natural Drugs, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, and School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China.
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523808, China.
| | - Qin Ouyang
- Department of General Surgery, Dalang Hospital, Dongguan, Guangdong, China.
| | - Hiroshi Sakiyama
- Department of Science, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa, Yamagata 990-8560, Japan
| | - Mohd Muddassir
- Department of Chemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Jianqiang Liu
- Key Laboratory of Research and Development of Natural Drugs, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, and School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China.
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan, 523808, China.
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Muddassir M, Alarifi A, Abduh NAY, Saeed WS, Karami AM, Afzal M. Multifunctional Zn(II) Coordination Polymer as Highly Selective Fluorescent Sensor and Adsorbent for Dyes. Int J Mol Sci 2023; 24:ijms24108512. [PMID: 37239860 DOI: 10.3390/ijms24108512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 04/28/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023] Open
Abstract
A new Zn(II)-based coordination polymer (1) comprising the Schiff base ligand obtained by the condensation of 5-aminosalicylic acid and salicylaldehyde has been synthesized. This newly synthesized compound has been characterized by analytical and spectroscopic methods, and finally, by single-crystal X-ray diffraction technique in this study. The X-ray analysis reveals a distorted tetrahedral environment around the central Zn(II) center. This compound has been used as a sensitive and selective fluorescent sensor for acetone and Ag+ cations. The photoluminescence measurements indicate that in the presence of acetone, the emission intensity of 1 displays quenching at room temperature. However, other organic solvents caused meagre changes in the emission intensity of 1. Additionally, the fluorescence intensity of 1 has been examined in the presence of different ketones viz. cyclohexanone, 4-heptanone, and 5-nonanone, to assess the interaction between the C=O group of the ketones and the molecular framework of 1. Moreover, 1 displays a selective recognition of Ag+ in the aqueous medium by an enhancement in its fluorescence intensity, representing its high sensitivity for the detection of Ag+ ions in a water sample. Additionally, 1 displays the selective adsorption of cationic dyes (methylene blue and rhodamine B). Hence, 1 showcases its potential as an excellent luminescent probe to detect acetone, other ketones, and Ag+ with an exceptional selectivity, and displaying a selective adsorption of cationic dye molecules.
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Affiliation(s)
- Mohd Muddassir
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Abdullah Alarifi
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Naaser A Y Abduh
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Waseem Sharaf Saeed
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | | | - Mohd Afzal
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
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Gautam C, Srivastava D, Kociok-Köhn G, Gosavi SW, Sharma VK, Chauhan R, Late DJ, Kumar A, Muddassir M. Copper(ii) and cobalt(iii) Schiff base complexes with hydroxy anchors as sensitizers in dye-sensitized solar cells (DSSCs). RSC Adv 2023; 13:9046-9054. [PMID: 36950080 PMCID: PMC10025944 DOI: 10.1039/d3ra00344b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 03/11/2023] [Indexed: 03/22/2023] Open
Abstract
Two Schiff base complexes of copper(ii) and cobalt(iii) having the formulae [CuL2] (Cu-Sal) and [CoL3] (Co-Sal) (HL = 2-(((2-hydroxyethyl)imino)methyl)phenol) have been synthesized and characterized microanalytically, spectroscopically and in the case of Cu-Sal using single crystal X-ray diffraction technique. The single crystal X-ray analysis reveals a square planar geometry around Cu(ii) satisfied by phenoxide oxygen and imine nitrogen of the L- ligand to generate a six membered chelate ring. The solid state structure of Cu-Sal is satisfied by varied intermolecular non-covalent interactions. The nature of these interactions has been addressed with the aid of Hirshfeld surface analysis. Both compounds have been used as sensitizers in TiO2 based dye sensitized solar cells (DSSCs) and the DSSC experiments revealed that Co-Sal offers better photovoltaic performance in comparison to Cu-Sal. The Co-Sal exhibited a J sc of 9.75 mA cm-2 with a V oc of -0.648 V, incident photon to current conversion efficiency (IPCE) of 57% and η of 3.84%. The relatively better photovoltaic performance of Co-Sal could be attributed to better light absorption and dye loading than that of Cu-Sal.
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Affiliation(s)
- Chiteri Gautam
- Department of Chemistry, Faculty of Science, University of Lucknow Lucknow 226 007 India
| | - Devyani Srivastava
- Department of Chemistry, Faculty of Science, University of Lucknow Lucknow 226 007 India
| | - Gabriele Kociok-Köhn
- Material and Chemical Characterisation Facility (MC2), University of Bath Bath BA27AY UK
| | - Suresh W Gosavi
- Department of Physics, Faculty of Science, Savitribai Phule Pune University Pune 411007 India
| | - Vinod K Sharma
- Department of Chemistry, Faculty of Science, University of Lucknow Lucknow 226 007 India
| | - Ratna Chauhan
- Department of Environmental Science, Savitribai Phule Pune University Pune 411007 India
| | - Dattatray J Late
- Centre for Nanoscience and Nanotechnology Amity University Maharashtra Mumbai-Pune Expressway, Bhatan, Post Somatne, Panvel Mumbai Maharashtra 410206 India
| | - Abhinav Kumar
- Department of Chemistry, Faculty of Science, University of Lucknow Lucknow 226 007 India
| | - Mohd Muddassir
- Department of Chemistry, College of Sciences, King Saud University Riyadh 11451 Saudi Arabia
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10
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Sharma M, Sharma N, Muddassir M, Rahman QI, Dwivedi UN, Akhtar S. Structure-based pharmacophore modeling, virtual screening and simulation studies for the identification of potent anticancerous phytochemical lead targeting cyclin-dependent kinase 2. J Biomol Struct Dyn 2022; 40:9815-9832. [PMID: 34151738 DOI: 10.1080/07391102.2021.1936178] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cyclin-dependent kinases are of critical importance in directing various cell cycle phases making them as potential tumor targets. Cyclin-dependent kinase 2 (CDK2) in particular plays a significant part during cell cycle events and its imbalance roots out tumorogenic environment. Herein, we built a structure-based pharmacophore model complementing the ATP pocket site of CDK2 with four pharmacophoric features, using a series of structures obtained from cluster analysis during MD simulation assessment. This was followed by its validation and further database screening against Taiwan indigenous plants database (5284 compounds). The screened compounds were subjected toward Lipinski's rule (RO5) and ADMET filter followed by docking analysis and simulation study. In filtering hits (10 compounds) via molecular docking against CDK2, Schinilenol with -8.1 kcal/mol fetched out as a best lead phytoinhibitor in the presence of standard drug (Dinaciclib). Additionally, pharmacophore mapping analysis also indicated relative fit values of dinaciclib and schinilenol as 2.37 and 2.31, respectively. Optimization, flexibility prediction and the stability of CDK2 in complex with the ligands were also ascertained by means of molecular dynamics for 50 ns, which further proposed schinilenol having better binding stability than dinaciclib with RMSD values ranging from 0.31 to 0.34 nm. Reactivity site, biological activity detection and cardiotoxicity assessment also proposed schinilenol as a better phytolead inhibitor than the existing dinaciclib. Abbreviations: CDK2: Cyclin dependent kinase2; ATP: Adenosine triphosphate; MD: Molecular dynamics, RO5: Rule of five; ADMET: Absorption, distribution, metabolism, and excretion; RMSD: Root mean square deviation; DS: Discovery Studio; SOM: Site of metabolism; RBPM: receptor based pharmacophore model; TIP: Schinilenol; hERG: human Ether-à-go-go - Related GeneCommunicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Mala Sharma
- Department of Biosciences, Integral University, Lucknow, India
| | - Neha Sharma
- Department of Bioengineering, Integral University, Lucknow, India
| | - Mohd Muddassir
- Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | | | - U N Dwivedi
- Department of Biochemistry, University of Lucknow, Lucknow, India
| | - Salman Akhtar
- Department of Bioengineering, Integral University, Lucknow, India.,Novel Global Community Educational Foundation, Hebersham, Australia
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11
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Singh A, Kociok-Köhn G, Dutta A, Kumar A, Muddassir M. Diaminopyridine Hg(II)-based 1D supramolecular polymer: Crystallographic and computational insights into spodium bonding. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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12
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Dong X, Shi Z, Li D, Li Y, An N, Shang Y, Sakiyama H, Muddassir M, Si C. The regulation research of topology and magnetic exchange models of CPs through Co(II) concentration adjustment. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Ding Q, Xu Z, Zhou L, Rao C, Li W, Muddassir M, Sakiyama H, Li B, Ouyang Q, Liu J. A multimodal Metal-Organic framework based on unsaturated metal site for enhancing antitumor cytotoxicity through Chemo-Photodynamic therapy. J Colloid Interface Sci 2022; 621:180-194. [PMID: 35461133 DOI: 10.1016/j.jcis.2022.04.078] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 04/09/2022] [Accepted: 04/11/2022] [Indexed: 02/05/2023]
Abstract
Chemodynamic therapy when combined with chemotherapy opens up a new avenue for treatment of cancer. However, its development is still restricted by low targeting, high dose and toxic side effects. Herein, rational designing and construction of a new multifunctional platform with the core-shell structure 5-ALA@UiO-66-NH-FAM@CP1 (ALA = 5-aminolevulinic acid, CP1 = zirconium-pemetrexed (Zr-MTA)) has been performed. In this platform, CP1 acting as a shell is encapsulated with the UiO-66-NH2 to engender a core-shell structure that promotes and achieves a high MTA loading rate through high affinity between MTA and unsaturated Zr site of UiO-66-NH2. The 5-ALA and 5-carboxyl fluorescein (5-FAM) was successfully loaded and covalently combined with UiO-66-NH2 due to its high porosity and presence of amino groups. The characterization results indicated that the loading rate of MTA (41.03 wt%) of platform is higher than the reported values. More importantly, the in vitro and in vivo results also demonstrated that it has a good folate targeting ability and realizes high efficient antitumor activity by chemotherapy combied with photodynamic therapy (PDT). This newly developed multifunctional platform could provide a new idea for designing and constructing the carrier with chemotherapy and PDT therapy.
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Affiliation(s)
- Qiongjie Ding
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan China; Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan 523808, China
| | - Zhijue Xu
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Luyi Zhou
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan 523808, China
| | - Congying Rao
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan 523808, China
| | - Weimin Li
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China
| | - Mohd Muddassir
- Department of Chemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Hiroshi Sakiyama
- Department of Science, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa, Yamagata 990-8560, Japan
| | - Bo Li
- Department of Vascular Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China.
| | - Qin Ouyang
- Department of General Surgery, Dalang Hospital, Dongguan 523800, China.
| | - Jianqiang Liu
- The First Dongguan Affiliated Hospital, Guangdong Medical University, Dongguan China; Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan 523808, China.
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14
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Singh A, Singh A, Kociok‐Köhn G, Bhimireddi R, Singh A, Singh AK, Kumar A, Muddassir M. Ternary Copper Molybdenum Sulfide (Cu
2
MoS
4
) nanoparticles anchored on PANI/rGO as electrocatalysts for Oxygen Evolution Reaction (OER). Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ayushi Singh
- Department of Chemistry, Faculty of Science University of Lucknow Lucknow India
| | - Amita Singh
- Department of Chemistry, Faculty of Science University of Lucknow Lucknow India
- Dr. Ram Manohar Lohiya Awadh University Ayodhya India
| | - Gabriele Kociok‐Köhn
- Materials and Chemical Characterisation Facility (MC2) University of Bath Bath UK
| | - Rajasekhar Bhimireddi
- Functional Materials Lab, Central Research Instruments Facility Sri Sathya Sai Institute of Higher Learning Andhra Pradesh India
| | - Anar Singh
- Department of Physics, Faculty of Science University of Lucknow Lucknow India
| | | | - Abhinav Kumar
- Department of Chemistry, Faculty of Science University of Lucknow Lucknow India
| | - Mohd Muddassir
- Department of Chemistry, College of Sciences King Saud University Riyadh Saudi Arabia
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15
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Zhong Y, Chen C, Liu S, Lu C, Liu D, Pan Y, Sakiyama H, Muddassir M, Liu J. A new magnetic adsorbent of eggshell-zeolitic imidazolate framework for highly efficient removal of norfloxacin. Dalton Trans 2021; 50:18016-18026. [PMID: 34825686 DOI: 10.1039/d1dt03020e] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Many effluents contain various antibiotics commonly, where the simultaneous removal of them is a big challenge. In this study, the magnetic biocomposite (eggshell-zeolitic imidazolate framework) was designed and synthesized by green and facile method. Zeolitic imidazolate framework-8 (ZIF-8) particles were stabilized on the surface of magnetic eggshell (Fe3O4-ES), generating a new Fe3O4-ES/ZIF-8 adsorbent, which was also fully characterized using FTIR, XRD, SEM and BET techniques. Thereafter, norfloxacin (NOR) adsorption processes were investigated through different influencing factors (dosage, concentration, pH and temperature). The Langmuir adsorption isotherm could confirm a maximum removal efficiency of 80.13% for NOR. Kinetic studies illustrated that the pseudo-first-order model was in line with the experimental data of the simultaneous removal of NOR. Moreover, the magnetic nature of the adsorbent caused an easy separation from the aqueous solution.
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Affiliation(s)
- Yuyu Zhong
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan, 523808, China.
| | - Chen Chen
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan, 523808, China.
| | - Si Liu
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan, 523808, China.
| | - Chengyu Lu
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan, 523808, China.
| | - Dong Liu
- Shenzhen Huachuang Bio-pharmaceutical Technology Co. Ltd., Shenzhen, 518112, Guangdong, China
| | - Ying Pan
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan, 523808, China.
| | - Hiroshi Sakiyama
- Department of Science, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa, Yamagata 990-8560, Japan
| | - Mohd Muddassir
- Department of Chemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
| | - Jianqiang Liu
- Guangdong Provincial Key Laboratory of Research and Development of Natural Drugs, and School of Pharmacy, Guangdong Medical University, Guangdong Medical University Key Laboratory of Research and Development of New Medical Materials, Dongguan, 523808, China.
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16
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Afzal M, Alarifi A, Hasnain MS, Muddassir M. Elucidation of DNA binding interaction of new Cu(II)/Zn(II) complexes derived from Schiff base and L-tryptophan amino acid: a multispectroscopic and molecular docking approach. Environ Sci Pollut Res Int 2021; 28:44039-44050. [PMID: 33846920 DOI: 10.1007/s11356-021-13826-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 04/05/2021] [Indexed: 06/12/2023]
Abstract
Herein, we describe the synthesis, structural elucidation, and DNA interaction of newly synthesized Cu(II) and Zn(II) complexes, i.e., [Cu(SB)(L-trp)(H2O)2]NO3 (1) and [Zn(SB)(L-trp)(H2O)2]NO3 (2) (SB = Schiff base obtained from the reaction between o-vanillin and 2-amino-2-methylpropane-1,3-diol; L-trp = L-tryptophan). From the analysis, a six-coordinated environment around the Cu(II) or Zn(II) center is proposed. The ability of the complexes to bind with calf thymus DNA was examined by optical spectroscopy (UV-vis titrations and steady-state fluorescence emission) and viscosity measurements. The vivid experimental results revealed that complexes 1 and 2 avidly bind to DNA through surface and groove binding modes, albeit with dissimilar intrinsic binding constants (1.54 × 104 and 1.36 × 104 M-1 for 1 and 2, respectively). Both complexes can displace ethidium bromide (EB) to some extent from the intercalated EB-DNA system, resulting in fluorescence quenching. Additional experiments such as [Fe(CN)6]4--induced quenching and thermal melting confirmed the electrostatic and groove binding mode. Furthermore, molecular docking studies verified that both complexes locate in the DNA minor groove by surface binding and were stabilized through weak intermolecular forces. The binding affinity of the lowest energy docked pose was found to be -5.37 kcal/mol for complex 1 and - 5.18 kcal/mol for complex 2. The present work is expected to pave the way for the synthesis of DNA-targeting Cu(II)/Zn(II) metal complexes for the development of chemotherapeutic agents.
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Affiliation(s)
- Mohd Afzal
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - Abdullah Alarifi
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Md Saquib Hasnain
- Department of Pharmacy, Palamau Institute of Pharmacy, Chianki, Daltonganj, Jharkhand, 822102, India
| | - Mohd Muddassir
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
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17
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Du J, Shao Y, Hu Y, Chen Y, Cang J, Chen X, Pei W, Miao F, Shen Y, Muddassir M, Zhang Y, Zhang J, Teng G. Multifunctional Liposomes Enable Active Targeting and Twinfilin 1 Silencing to Reverse Paclitaxel Resistance in Brain Metastatic Breast Cancer. ACS Appl Mater Interfaces 2021; 13:23396-23409. [PMID: 33982563 DOI: 10.1021/acsami.1c02822] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Paclitaxel (PTX) is a first-line chemotherapeutic drug for breast cancer, but PTX resistance often occurs in metastatic breast cancer. In addition, due to the poor targeting of chemotherapeutic drugs and the presence of the blood-brain barrier (BBB), it is hard to effectively treat brain metastatic breast cancer using paclitaxel. Thus, it is urgent to develop an effective drug delivery system for the treatment of brain metastatic breast cancer. The current study found that TWF1 gene, an epithelial-mesenchymal transition-associated gene, was overexpressed in brain metastatic breast cancer (231-BR) cells and was associated with the PTX resistance of 231-BR cells. Knockdown of TWF1 by small interference RNA (siRNA) in 231-BR cells could effectively increase the sensitivity of brain metastatic breast cancer cells to paclitaxel. Then, a liposome-based drug delivery system was developed for PTX delivery across BBB, enhancing PTX sensitivity and brain metastases targeting via BRBP1 peptide modification. The results showed that BRBP1-modified liposomes could effectively cross the BBB, specifically accumulate in brain metastases, and effectively interfere TWF1 gene expression in vitro and in vivo, and thus they enhanced proliferation inhibition, cell cycle arrest, and apoptosis induction, thereby inhibiting the formation and growth of brain metastases. In summary, our results indicated that BRBP1-modified and PTX- and TWF1 siRNA-loaded liposomes have the potential for the treatment of brain metastatic breast cancer, which lays the foundation for the development of a new targeted drug delivery system.
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Affiliation(s)
- Jiawei Du
- Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Medical School, Southeast University, Nanjing 210009, People's Republic of China
| | - Yong Shao
- Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Medical School, Southeast University, Nanjing 210009, People's Republic of China
| | - Yue Hu
- Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Medical School, Southeast University, Nanjing 210009, People's Republic of China
| | - Yiwen Chen
- Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Medical School, Southeast University, Nanjing 210009, People's Republic of China
| | - Jiehui Cang
- Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Medical School, Southeast University, Nanjing 210009, People's Republic of China
| | - Xin Chen
- Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Medical School, Southeast University, Nanjing 210009, People's Republic of China
| | - Wenqin Pei
- Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Medical School, Southeast University, Nanjing 210009, People's Republic of China
| | - Fengqin Miao
- Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Medical School, Southeast University, Nanjing 210009, People's Republic of China
| | - Yuqing Shen
- Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Medical School, Southeast University, Nanjing 210009, People's Republic of China
| | - Mohd Muddassir
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, KSA
| | - Ying Zhang
- Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Medical School, Southeast University, Nanjing 210009, People's Republic of China
| | - Jianqiong Zhang
- Key Laboratory of Developmental Genes and Human Disease, Ministry of Education, Medical School, Southeast University, Nanjing 210009, People's Republic of China
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Zhongda Hospital, Medical School, Southeast University, Nanjing 210009, People's Republic of China
| | - Gaojun Teng
- Jiangsu Key Laboratory of Molecular and Functional Imaging, Zhongda Hospital, Medical School, Southeast University, Nanjing 210009, People's Republic of China
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18
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Tan XY, Wang J, Rao CY, Lu L, Wei LT, Ma AQ, Muddassir M. Two New 3D Metal-Organic Frameworks Constructed by Polycarboxylate and N-Donor Ligands: Crystal Structure, Photocatalytic Performances, and DFT Calculation. RUSS J COORD CHEM+ 2021. [DOI: 10.1134/s1070328421040072] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Wang Z, Zhao J, Muddassir M, Guan R, Tao S. Recovering the Thermally Activated Delayed Fluorescence in Aggregation-Induced Emitters of Carborane. Inorg Chem 2021; 60:4705-4716. [PMID: 33739084 DOI: 10.1021/acs.inorgchem.0c03664] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The aggregation-induced emission (AIE) behaviors of carborane-based hybrid emitters have been extensively reported, while their combinations with the thermally activated delayed fluorescence (TADF) are still scarce. We designed and synthesized three Janus carboranes (the chemical structures resemble the double-faced god, Janus) Cb-1/2/3 with different carbazole moieties. All of the Janus carboranes exhibited quenched emission in solution with ΦPL (quantum efficiency of photoluminescence (PL)) lower than 0.01. The PL performance was improved by proceeding to the aggregates in THF/water (ΦPL 0.17-0.35) and further improved in the crystals or solid with ΦPL up to 0.99 for Cb-1, 0.85 for Cb-2, and 0.61 for Cb-3, which agreed with the AIE enhancement. Although the PL of solid Cb-1/2/3 showed non-TADF properties with lifetimes only at several nanoseconds, the crystallographic studies have shown a root cause of π···π stacking that quenched the TADF, and the theoretical calculations forecasted small singlet-triplet energy gaps (ΔES-T) therein. According to these findings, TADF was recovered in Cb-1/2/3 by doping into 1,3-bis(carbazol-9-yl)benzene (mCP). The 10 wt % doped films of Cb-1/2/3 have achieved a trade-off of ΦPL (0.84 in Cb-3 and 0.83 in Cb-1) and delayed lifetime (up to 8 μs). The doped devices of organic light-emitting diodes incorporating Cb-1/2/3 achieved the highest external quantum efficiency at 10.1% and the maximized luminance of 5920 cd/m2 at a driving voltage of 8 V.
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Affiliation(s)
- Zhaojin Wang
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng, Jiangsu Province 224051, P.R. China
| | - Juewen Zhao
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, P.R. China
| | - Mohd Muddassir
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Rongfeng Guan
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng, Jiangsu Province 224051, P.R. China
| | - Silu Tao
- School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, P.R. China
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20
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Ji Q, Hou J, Yong X, Gong G, Muddassir M, Tang T, Xie J, Fan W, Chen X. Targeted Dual Small Interfering Ribonucleic Acid Delivery via Non-Viral Polymeric Vectors for Pulmonary Fibrosis Therapy. Adv Mater 2021; 33:e2007798. [PMID: 33604928 DOI: 10.1002/adma.202007798] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Indexed: 06/12/2023]
Abstract
Inhibiting the myofibroblast differentiation of lung-resident mesenchymal stem cells (LR-MSCs) is a promising yet challenging approach for pulmonary fibrosis (PF) therapy. Here, micelles formed by a graft copolymer of multiple PEGs modified branched polyethylenimine are used for delivering runt-related transcription factor-1 (RUNX1) small interfering RNA (siRNA) (siRUNX1) to the lung, aiming to inhibit the myofibroblast differentiation of LR-MSCs. LR-MSC targeting is achieved by functionalizing the micelle surface with an anti-stem-cell antigen-1 antibody fragment (Fab'). Consequently, therapeutic benefits are obtained by successful suppression of myofibroblast differentiation of LR-MSCs in bleomycin-induced PF model mice treated with siRUNX1-loaded micelles. Furthermore, an excellent synergistic effect of PF therapy is achieved for this micelle system loaded siRUNX1 and glioma-associated oncogene homolog-1 (Gli1) small interfering RNA (siGli1), a traditional anti-PF siRNA of glioma-associated oncogene homolog-1. Hence, this work not only provides RUNX1 as a novel PF therapeutic target, but also as a promising dual siRNA-loaded nanocarrier system for the therapy of PF.
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Affiliation(s)
- Qijian Ji
- Department of Critical Care Medicine, Xuyi People's Hospital, 28 Hongwu Road, Xuyi, Huai'an, Jiangsu, 211700, China
- Department of Emergency Medicine, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, 210002, China
| | - Jiwei Hou
- Immunology and Reproduction Biology Laboratory & State Key Laboratory of Analytical Chemistry for Life Science, Medical School, Nanjing University, Nanjing, Jiangsu, 210093, China
- Jiangsu Key Laboratory of Molecular Medicine, Nanjing University, Nanjing, Jiangsu, 210093, China
| | - Xueqing Yong
- Department of Nuclear Science & Technology, Nanjing University of Aeronautics and Astronautics, Nanjing, Jiangsu, 211106, China
| | - Guangming Gong
- Department of Pharmaceutics, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, 210002, China
| | - Mohd Muddassir
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Tianyu Tang
- Jiangsu Key Laboratory of Molecular Imaging and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School, Southeast University, 87 Dingjiaqiao Road, Nanjing, Jiangsu, 210009, China
| | - Jinbing Xie
- Jiangsu Key Laboratory of Molecular Imaging and Functional Imaging, Department of Radiology, Zhongda Hospital, Medical School, Southeast University, 87 Dingjiaqiao Road, Nanjing, Jiangsu, 210009, China
| | - Wenpei Fan
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing, Jiangsu, 210009, China
| | - Xiaoyuan Chen
- Yong Loo Lin School of Medicine and Faculty of Engineering, National University of Singapore, Singapore, 119228, Singapore
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21
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Yuan F, Ma HX, Yuan CM, Zhou CS, Hu HM, Kumar A, Muddassir M. Syntheses of a series of lanthanide metal–organic frameworks for efficient UV-light-driven dye degradation: experiment and simulation. CrystEngComm 2021. [DOI: 10.1039/d0ce01245a] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Three Ln-MOFs show unique 3,8-connected 3D networks and have been used as photocatalysts for the degradation of organic dye methyl violet under UV light.
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Affiliation(s)
- Fei Yuan
- School of Chemical Engineering
- Northwest University
- China
- Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources
- College of Chemical Engineering and Modern Materials
| | - Hai-Xia Ma
- School of Chemical Engineering
- Northwest University
- China
| | - Chun-Mei Yuan
- Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources
- College of Chemical Engineering and Modern Materials
- Shangluo University
- Shangluo 726000
- China
| | - Chun-Sheng Zhou
- Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources
- College of Chemical Engineering and Modern Materials
- Shangluo University
- Shangluo 726000
- China
| | - Huai-Ming Hu
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education
- College of Chemistry and Materials Science
- Northwest University
- Xi'an 710069
- China
| | - Abhinav Kumar
- Department of Chemistry
- Faculty of Science
- University of Lucknow
- Lucknow
- India
| | - Mohd Muddassir
- Department of Chemistry
- College of Sciences
- King Saud University
- Riyadh 11451
- Saudi Arabia
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22
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Wang J, Rao C, Lu L, Zhang S, Muddassir M, Liu J. Efficient photocatalytic degradation of methyl violet using two new 3D MOFs directed by different carboxylate spacers. CrystEngComm 2021. [DOI: 10.1039/d0ce01632b] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Both the MOFs proved to be good candidates for the photocatalytic degradation of methyl violet. The mechanism of these photocatalytic degradations is discussed.
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Affiliation(s)
- Jun Wang
- School of Chemistry and Environmental Engineering
- Sichuan University of Science & Engineering
- Zigong
- PR China
| | - Congying Rao
- Key Laboratory of Research and Development of New Medical Materials of Guangdong Medical University
- School of Pharmacy
- Guangdong Medical University
- Dongguan
- China
| | - Lu Lu
- School of Chemistry and Environmental Engineering
- Sichuan University of Science & Engineering
- Zigong
- PR China
| | - Shile Zhang
- School of Chemistry and Environmental Engineering
- Sichuan University of Science & Engineering
- Zigong
- PR China
| | - Mohd Muddassir
- Department of Chemistry
- College of Science
- King Saud University
- Riyadh 11451
- Saudi Arabia
| | - Jianqiang Liu
- Key Laboratory of Research and Development of New Medical Materials of Guangdong Medical University
- School of Pharmacy
- Guangdong Medical University
- Dongguan
- China
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23
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Rahman QI, Ali A, Ahmad N, Lohani MB, Mehta SK, Muddassir M. Synthesis and Characterization of CuO Rods for Enhanced Visible Light Driven Dye Degradation. J Nanosci Nanotechnol 2020; 20:7716-7723. [PMID: 32711648 DOI: 10.1166/jnn.2020.18713] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Here, we report simple and efficient method to synthesize CuO rods using copper acetate, hexamethylenetetramine (HMTA) and sodium hydroxide (NaOH) solutions via hydrothermal process followed by calcination. The Field emission scanning electron microscopy images revealed that synthesized CuO rods were 2-4μm thick with several micrometers long and grown into high density. The as-synthesized CuO rods were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV-visible spectroscopy and Energy dispersive X-ray analysis (EDS) which confirmed the formation of highly crystalline, single phase pure CuO rods with monoclinic structures. The photocatalytic capability of synthesized CuO rods was executed by monitoring the degradation of methylene blue (MB) dye under visible light illumination. The results showed MB dye degraded about ~70% in just 100 min and followed first order reaction kinetics with rate constant k = 0.01123 mint.1 and R² = 0.9880.
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Affiliation(s)
- Qazi Inamur Rahman
- Department of Chemistry, Integral University, Lucknow, Uttar Pradesh 226026, India
| | - Arif Ali
- Department of Applied Chemistry, Zakir Husain College of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India
| | - Naseem Ahmad
- Department of Chemistry, Integral University, Lucknow, Uttar Pradesh 226026, India
| | - Minaxi B Lohani
- Department of Chemistry, Integral University, Lucknow, Uttar Pradesh 226026, India
| | - S K Mehta
- Departments of Chemistry, Panjab University, Chandigarh 160014, India
| | - Mohd Muddassir
- Department of Chemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
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24
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Sharma S, Muddassir M, Muthusamy S, Vaishnav PK, Singh M, Sharma D, Kanagarajan S, Shanmugam V. A non-classical route of efficient plant uptake verified with fluorescent nanoparticles and root adhesion forces investigated using AFM. Sci Rep 2020; 10:19233. [PMID: 33159139 PMCID: PMC7648022 DOI: 10.1038/s41598-020-75685-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 10/19/2020] [Indexed: 11/15/2022] Open
Abstract
Classical plant uptake is limited to hydrophilic or water-dispersible material. Therefore, in order to test the uptake behaviour of hydrophobic particles, here, we tested the fate of hydrophobic particles (oleylamine coated Cu2-xSe NPs (CS@OA)) in comparison to hydrophilic particles (chitosan-coated Cu2-xSe NPs (CS@CH)) by treatment on the plant roots. Surprisingly, hydrophobic CS@OA NPs have been found to be ~ 1.3 times more efficient than hydrophilic CS@CH NPs in tomato plant root penetration. An atomic force microscopy (AFM) adhesion force experiment confirms that hydrophobic NPs experience non-spontaneous yet energetically favorable root trapping and penetration. Further, a relative difference in the hydrophobic vs. hydrophilic NPs movement from roots to shoots has been observed and found related to the change in protein corona as identified by two dimensional-polyacrylamide gel electrophoresis (2D-PAGE) analysis. Finally, the toxicity assays at the give concentration showed that Cu2-xSe NPs lead to non-significant toxicity as compared to control. This technology may find an advantage in fertilizer application.
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Affiliation(s)
- Sandeep Sharma
- Institute of Nano Science and Technology, Habitat Centre, Phase- 10, Sector- 64, Mohali, Punjab, 160062, India
| | - Mohd Muddassir
- CSIR-Institute of Microbial Technology, Chandigarh, India
| | | | | | - Manish Singh
- Institute of Nano Science and Technology, Habitat Centre, Phase- 10, Sector- 64, Mohali, Punjab, 160062, India
| | - Deepak Sharma
- CSIR-Institute of Microbial Technology, Chandigarh, India
| | - Selvaraju Kanagarajan
- Department of Plant Breeding, Swedish University of Agricultural Sciences, Alnarp, Sweden.
| | - Vijayakumar Shanmugam
- Institute of Nano Science and Technology, Habitat Centre, Phase- 10, Sector- 64, Mohali, Punjab, 160062, India.
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25
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Rahman QI, Hasan S, Ali A, Mehta SK, Raja MA, Ahmad N, Khan AR, Muddassir M. Synthesis and Characterizations of Nitrogen (N) Doped Strontium Titanate (SrTiO₃) Nanoparticles for Enhanced Visible Light Driven Photocatalytic Degradation. J Nanosci Nanotechnol 2020; 20:6475-6481. [PMID: 32385001 DOI: 10.1166/jnn.2020.18591] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Highly crystalline bare and N-doped SrTiO₃ nanoparticles were effectively synthesized with strontium acetate, titanium isopropoxide, hexamethylenetetramine as precursor via citric acid assisted hydrothermal process followed by calcination. The hydrothermally synthesized bare and N-doped SrTiO₃ NPs possessed monodispersity throughout with particle size diameter 50±5 nm but because of annealing at 750 °C temperature the synthesized NPs got agglomerate which created rough surface and induces oxygen vacancy in the NPs. Introducing N3- ions impurity into SrTiO₃ lattice tailored the electronic band structure of SrTiO₃ and extends its absorption into the visible region. It would display the p-type conductivity and facilitate the photoinduced electron-hole pairs towards respective site which diminishes the chances of recombination of electron-hole pairs that enhances photocatalytic degradation reaction. The results showed MB degraded about ~88 in just 140 min and followed first order reaction kinetics with rate constant k = 0.01489 mint-1.
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Affiliation(s)
- Qazi Inamur Rahman
- Department of Chemistry, Integral University, Lucknow 226026, Uttar Pradesh, India
| | - Shumaila Hasan
- Department of Chemistry, Integral University, Lucknow 226026, Uttar Pradesh, India
| | - Arif Ali
- Department of Applied Chemistry, Zakir Husain College of Engineering and Technology (ZHCET), Aligarh Muslim University, Aligarh 202002, India
| | - S K Mehta
- Departments of Chemistry & Center of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Mohammad Asif Raja
- Department of Civil Engineering, University of Gondar, P.O. Box 196, Ethiopia
| | - Naseem Ahmad
- Department of Chemistry, Integral University, Lucknow 226026, Uttar Pradesh, India
| | - Abdul Rahman Khan
- Department of Chemistry, Integral University, Lucknow 226026, Uttar Pradesh, India
| | - Mohd Muddassir
- Department of Chemistry, College of Sciences, King Saud University, Riyadh 11451, Saudi Arabia
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26
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Chuo SC, Nasir HM, Mohd-Setapar SH, Mohamed SF, Ahmad A, Wani WA, Muddassir M, Alarifi A. A Glimpse into the Extraction Methods of Active Compounds from Plants. Crit Rev Anal Chem 2020; 52:667-696. [PMID: 32954795 DOI: 10.1080/10408347.2020.1820851] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Naturally active compounds are usually contained inside plants and materials thereof. Thus, the extraction of the active compounds from plants needs appropriate extraction methods. The commonly employed extraction methods are mostly based on solid-liquid extraction. Frequently used conventional extraction methods such as maceration, heat-assisted extraction, Soxhlet extraction, and hydrodistillation are often criticized for large solvent consumption and long extraction times. Therefore, many advanced extraction methods incorporating various technologies such as ultrasound, microwaves, high pressure, high voltage, enzyme hydrolysis, innovative solvent systems, adsorption, and mechanical forces have been studied. These advanced extraction methods are often better than conventional methods in terms of higher yields, higher selectivity, lower solvent consumption, shorter processing time, better energy efficiency, and potential to avoid organic solvents. They are usually designed to be greener, more sustainable, and environment friendly. In this review, we have critically described recently developed extraction methods pertaining to obtaining active compounds from plants and materials thereof. Main factors that affect the extraction performances are tuned, and extraction methods are chosen in line with the properties of targeted active compounds or the objectives of extraction. The review also highlights the advancements in extraction procedures by using combinations of extraction methods to obtain high overall yields or high purity extracts.
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Affiliation(s)
- Sing Chuong Chuo
- Centre of Lipids Engineering and Applied Research, Universiti Teknologi Malaysia, UTM Skudai, Johor, Malaysia.,Department of Quantity Surveying, Faculty of Built Environment, Universiti Teknologi Malaysia, UTM Skudai, Johor, Malaysia
| | - Hasmida Mohd Nasir
- Centre of Lipids Engineering and Applied Research, Universiti Teknologi Malaysia, UTM Skudai, Johor, Malaysia
| | - Siti Hamidah Mohd-Setapar
- Centre of Lipids Engineering and Applied Research, Universiti Teknologi Malaysia, UTM Skudai, Johor, Malaysia.,Malaysia-Japan International Institute of Technology, Jalan Sultan Yahya Petra, Universiti Teknologi Malaysia, Kuala Lumpur, Malaysia
| | - Sarajul Fikri Mohamed
- Department of Quantity Surveying, Faculty of Built Environment, Universiti Teknologi Malaysia, UTM Skudai, Johor, Malaysia
| | - Akil Ahmad
- Centre of Lipids Engineering and Applied Research, Universiti Teknologi Malaysia, UTM Skudai, Johor, Malaysia.,Malaysia-Japan International Institute of Technology, Jalan Sultan Yahya Petra, Universiti Teknologi Malaysia, Kuala Lumpur, Malaysia
| | - Waseem A Wani
- Department of Chemistry, Govt. Degree College Tral, Kashmir, J&K, India
| | - Mohd Muddassir
- Catalytic Chemistry Research Chair, Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Abdullah Alarifi
- Catalytic Chemistry Research Chair, Department of Chemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
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27
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Tambe PM, Bhowmick S, Chaudhary SK, Khan MR, Wabaidur SM, Muddassir M, Patil PC, Islam MA. Structure-Based Screening of DNA GyraseB Inhibitors for Therapeutic Applications in Tuberculosis: a Pharmacoinformatics Study. Appl Biochem Biotechnol 2020; 192:1107-1123. [PMID: 32686004 DOI: 10.1007/s12010-020-03374-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Accepted: 06/22/2020] [Indexed: 11/27/2022]
Abstract
Tuberculosis (TB) is an infectious disease caused by Mycobacterium tuberculosis (MTB) and considered as serious public health concern worldwide which kills approximately five thousand people every day. Therefore, TB drug development efforts are in gigantic need for identification of new potential chemical agents to eradicate TB from the society. The bacterial DNA gyrase B (GyrB) protein as an experimentally widely accepted effective drug target for the development of TB chemotherapeutics. In the present study, advanced pharmacoinformatics approaches were used to screen the Mcule database against the GyrB protein. Based on a number of chemometric parameters, five molecules were found to be crucial to inhibit the GyrB. A number of molecular binding interactions between the proposed inhibitors and important active site residues of GyrB were observed. The predicted drug-likeness properties of all molecules were indicated that compounds possess characteristics to be the drug-like candidates. The dynamic nature of each molecule was explored through the molecular dynamics (MD) simulation study. Various analyzing parameters from MD simulation trajectory have suggested rationality of the molecules to be potential GyrB inhibitor. Moreover, the binding free energy was calculated from the entire MD simulation trajectories highlighted greater binding free energy values for all newly identified compounds also substantiated the strong binding affection towards the GyrB in comparison to the novobiocin. Therefore, the proposed molecules might be considered as potential anti-TB chemical agents for future drug discovery purposes subjected to experimental validation. Graphical Abstract.
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Affiliation(s)
- Pranjali Mahadeo Tambe
- Department of Bioinformatics, Rajiv Gandhi Institute of IT and Biotechnology, Bharati Vidyapeeth Deemed University, Pune-Satara Road, Pune, India
| | - Shovonlal Bhowmick
- Department of Chemical Technology, University of Calcutta, 92 A.P.C. Road, Kolkata, India
| | - Sushil K Chaudhary
- Faculty of Pharmacy, DIT University, Mussoorie-Diversion Road, Makkawala, Dehradun, Uttarakhand, 248009, India
| | - Mohammad Rizwan Khan
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Saikh M Wabaidur
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Mohd Muddassir
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Preeti Chunarkar Patil
- Department of Bioinformatics, Rajiv Gandhi Institute of IT and Biotechnology, Bharati Vidyapeeth Deemed University, Pune-Satara Road, Pune, India
| | - Md Ataul Islam
- Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PL, UK. .,School of Health Sciences, University of Kwazulu-Natal, Westville Campus, Durban, South Africa. .,Department of Chemical Pathology, Faculty of Health Sciences, University of Pretoria and National Health Laboratory Service Tshwane Academic Division, Pretoria, South Africa.
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28
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Muddassir M, Alarifi A, Afzal M, Alowais A, Abduh NAY. Mononuclear High‐spin Octahedral Cobalt(II) Complex with Positive Axial Magnetic Anisotropy: Synthesis, Crystal Structure, and DFT Studies. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.202000154] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Mohd Muddassir
- Catalytic Chemistry Research Chair Department of Chemistry King Saud University 11451 Riyadh Saudi Arabia
| | - Abdullah Alarifi
- Catalytic Chemistry Research Chair Department of Chemistry King Saud University 11451 Riyadh Saudi Arabia
| | - Mohd Afzal
- Catalytic Chemistry Research Chair Department of Chemistry King Saud University 11451 Riyadh Saudi Arabia
| | - Ahmad Alowais
- Catalytic Chemistry Research Chair Department of Chemistry King Saud University 11451 Riyadh Saudi Arabia
| | - Naaser A. Y. Abduh
- Catalytic Chemistry Research Chair Department of Chemistry King Saud University 11451 Riyadh Saudi Arabia
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29
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Zhou SH, Wang J, Liu YW, Zhong Y, Sun YC, Xie B, Ma A, Singh A, Muddassir M, Kumar A. Structures and photocatalytic properties of two new Zn(ii) coordination polymers based on semi-rigid V-shaped multicarboxylate ligands. RSC Adv 2020; 10:18721-18727. [PMID: 35518302 PMCID: PMC9053881 DOI: 10.1039/d0ra02222e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 04/29/2020] [Indexed: 12/17/2022] Open
Abstract
Two new metal-organic coordination polymers (CPs), aqua-2,2'-bipyridine-5-(4'-carboxylphenoxy)isophthalatezinc(ii) polymer [Zn(HL)(2,2'-bipy)(H2O)] n (1) and tris-4,4'-bipyridine-bis-5-(4'-carboxylphenoxy)isophthalatetrizinc(ii) polymer [Zn3(L)2(4,4'-bipy)3] n (2) (H3L = 5-(4'-carboxylphenoxy)isophthalic acid, 4,4'-bipy = 4,4'-bipyridine and 2,2'-bipy = 2,2'-bipyridine), were obtained under hydrothermal conditions and characterized by microanalysis, FTIR spectroscopy and single crystal X-ray diffraction. The single crystal X-ray diffraction indicated that in both the CPs the coordination networks exhibited varied topologies and coordination modes around the Zn(ii) centers. CP 1 exhibits a one-dimensional (1D) chain structure, which further forms a 3D supramolecular architecture via intermolecular π⋯π and hydrogen bonding interactions, while 2 possesses a 3D framework generated from a 2D layered motif comprising zinc and tripodal carboxylate subunits pillared by 4,4'-bpy ligands. Apart from the structural investigation, the photocatalytic performances of both the coordination polymers to photodecompose an aqueous solution of methyl violet (MV) were examined. The results indicated that both the CPs displayed the potential to photodecompose aromatic dyes and in particular 2 showed good photocatalytic activity for dye degradation under light irradiation. The photocatalytic mechanism through which these CPs executed degradation of dyes has been explained with the assistance of band gap calculations using density of states (DOS) and its decomposed partial DOS calculations.
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Affiliation(s)
- Shan-He Zhou
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering Zigong PR China
| | - Jun Wang
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering Zigong PR China
| | - Yi-Wei Liu
- Dongguan Key Laboratory of Drug Design and Formulation Technology, School of Pharmacy, Guangdong Medical University Dongguan 523808 China
| | - Yuyu Zhong
- Dongguan Key Laboratory of Drug Design and Formulation Technology, School of Pharmacy, Guangdong Medical University Dongguan 523808 China
| | - Yan-Chun Sun
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering Zigong PR China
| | - Bin Xie
- School of Chemistry and Environmental Engineering, Sichuan University of Science & Engineering Zigong PR China
| | - Aiqing Ma
- Dongguan Key Laboratory of Drug Design and Formulation Technology, School of Pharmacy, Guangdong Medical University Dongguan 523808 China
| | - Amita Singh
- Department of Chemistry, Faculty of Science, University of Lucknow Lucknow 226007 India
| | - Mohd Muddassir
- Department of Chemistry, College of Sciences, King Saud University Riyadh 11451 Saudi Arabia
| | - Abhinav Kumar
- Department of Chemistry, Faculty of Science, University of Lucknow Lucknow 226007 India
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Sepay N, Sepay N, Al Hoque A, Mondal R, Halder UC, Muddassir M. In silico fight against novel coronavirus by finding chromone derivatives as inhibitor of coronavirus main proteases enzyme. Struct Chem 2020; 31:1831-1840. [PMID: 32412544 PMCID: PMC7220622 DOI: 10.1007/s11224-020-01537-5] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/13/2020] [Indexed: 01/10/2023]
Abstract
Novel coronavirus, 2019-nCoV is a danger to the world and is spreading rapidly. Very little structural information about 2019-nCoV make this situation more difficult for drug designing. Benzylidenechromanones, naturally occurring oxygen heterocyclic compounds, having capability to inhibit various protein and receptors, have been designed here to block mutant variety of coronavirus main protease enzyme (SARC-CoV-2 Mpro) isolated from 2019-nCoV with the assistance of molecular docking, bioinformatics and molecular electrostatic potential. (Z)-3-(4'-chlorobenzylidene)-thiochroman-4-one showed highest binding affinity to the protein. Binding of a compound to this protein actually inhibits the replication and transcription of the virus and, ultimately, stop the virus multiplication. Incorporation of any functional groups to the basic benzylidenechromanones enhances their binding ability. Chloro and bromo substitutions amplify the binding affinity. ADME studies of all these compounds indicate they are lipophilic, high gastro intestine absorbable and blood-brain barrier permeable. The outcome reveals that the investigated benzylidenechromanones can be examined in the case of 2019-nCoV as potent inhibitory drug of SARC-CoV-2 Mpro, for their strong inhibition ability, high reactivity and effective pharmacological properties.
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Affiliation(s)
- Nayim Sepay
- 1Department of Chemistry, Jadavpur University, Kolkata, 700032 India
| | - Nadir Sepay
- 2Plant Biotechnology Laboratory, Post Graduate Department of Botany, Ramakrishna Mission Vivekananda Centenary College, Rahara, Kolkata, 700118 India
| | - Ashique Al Hoque
- 3Department of Pharmaceutical Technology, Jadavpur University, Kolkata, 700032 India
| | - Rina Mondal
- Department of Chemistry, Uluberia College, Howrah, West Bengal 711 315 India
| | | | - Mohd Muddassir
- 5Department of Chemistry, College of Science, King Saud University, Riyadh, 11451 Saudi Arabia
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31
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Sharma N, Sharma M, Rahman QI, Akhtar S, Muddassir M. Quantitative structure activity relationship and molecular simulations for the exploration of natural potent VEGFR-2 inhibitors: an in silico anti-angiogenic study. J Biomol Struct Dyn 2020; 39:2806-2823. [PMID: 32363995 DOI: 10.1080/07391102.2020.1754916] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
VEGFR-2 has recently become an eye-catching molecular target for the novel therapeutic designs against cancer for its well known role in persuading angiogenesis in tumor cells. The current study set sights on the exploration of novel potent natural compound targeting VEGFR-2 via computational ligand-based modeling and database screening followed by binding pattern analysis, reactivity site prediction and MD simulation studies. The known 53 VEGFR-2 inhibitors (with IC50 ranging from 0.7 nM to 9700 nM) were headed for development of Ligand based pharmacophore model using 3 D QSAR pharmacophore generation module of DS Client. Training set inhibitors (23 compounds) were exploited to create pharmacophore model based on their chemical features. The model was validated through 30 test set inhibitors and exploited further for screening of 62,082 natural compounds from InterBioscreen natural compound database. Screened compounds further went through Drug-Likeliness study, ADMET prediction, Binding pattern analysis, In silico prediction of reactivity sites, Biological activity spectra prediction, pan assay interference compound identification and MD simulation analysis. Out of 5 screened compounds, Compound A and Compound B exhibited highest binding energy judged against the standard drug "Sorafenib". On further conducting reactivity site prediction, BAS prediction, and pan assay interference compound identification, Compound B exhibited better result which was carried forward for MD simulation study for 50 ns. MD simulation results suggested that Compound B exhibited more stable binding to the active site of VEGFR-2 without causing any conformational changes in protein-ligand complex. Thereby, the investigation proposes Compound B to hold potent antiangiogenic potential targeting VEGFR-2. [Formula: see text] Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Neha Sharma
- Department of Bioengineering, Integral University, Lucknow, India
| | - Mala Sharma
- Department of Biosciences, Integral University, Lucknow, India
| | | | - Salman Akhtar
- Department of Bioengineering, Integral University, Lucknow, India.,Novel Global Community Educational Foundation, Hebersham, Australia
| | - Mohd Muddassir
- Department of Chemistry, College of Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia
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32
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Muddassir M, Manna B, Singh P, Singh S, Kumar R, Ghosh A, Sharma D. Single-molecule force-unfolding of titin I27 reveals a correlation between the size of the surrounding anions and its mechanical stability. Chem Commun (Camb) 2018; 54:9635-9638. [DOI: 10.1039/c8cc05557b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The mechanical stability of proteins varies with size of surrounding anions.
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Affiliation(s)
- Mohd Muddassir
- Council of Scientific and Industrial Research–Institute of Microbial Technology
- Chandigarh
- India
| | - Bharat Manna
- School of Energy Science and Engineering
- Indian Institute of Technology Kharagpur
- Kharagpur
- India
| | - Priyanka Singh
- Council of Scientific and Industrial Research–Institute of Microbial Technology
- Chandigarh
- India
| | - Surjeet Singh
- Council of Scientific and Industrial Research–Institute of Microbial Technology
- Chandigarh
- India
| | - Rajesh Kumar
- School of Basic and Applied Sciences
- Central University of Punjab
- Bathinda
- India
| | - Amit Ghosh
- School of Energy Science and Engineering
- Indian Institute of Technology Kharagpur
- Kharagpur
- India
| | - Deepak Sharma
- Council of Scientific and Industrial Research–Institute of Microbial Technology
- Chandigarh
- India
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33
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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. J Photochem Photobiol B 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] [What about the content of this article? (0)] [Affiliation(s)] [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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Arjmand F, Muddassir M, Zaidi Y, Ray D. Design, synthesis and crystal structure determination of dinuclear copper-based potential chemotherapeutic drug entities; in vitro DNA binding, cleavage studies and an evaluation of genotoxicity by micronucleus test and comet assay. Med Chem Commun 2013. [DOI: 10.1039/c2md20141k] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Arjmand F, Sharma GC, Sayeed F, Muddassir M, Tabassum S. De novo design of chiral organotin cancer drug candidates: validation of enantiopreferential binding to molecular target DNA and 5'-GMP by UV-visible, fluorescence, (1)H and (31)P NMR. J Photochem Photobiol B 2011; 105:167-74. [PMID: 21945056 DOI: 10.1016/j.jphotobiol.2011.08.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2010] [Revised: 08/02/2011] [Accepted: 08/05/2011] [Indexed: 11/17/2022]
Abstract
N,N-bis[(R-/S-)-1-benzyl-2-ethoxyethane] tin (IV) complexes were synthesized by applying de novo design strategy by the condensation reaction of (R-/S-)2-amino-2-phenylethanol and dibromoethane in presence of dimethyltin dichloride and thoroughly characterized by elemental analysis, conductivity measurements, IR, ESI-MS, (1)H, (13)C and (119)Sn, multinuclear NMR spectroscopy and XRD study. Enantioselective and specific binding profile of R-enantiomer 1 in comparison to S-enantiomer 2 with ultimate molecular target CT-DNA was validated by UV-visible, fluorescence, circular dichroism, (1)H and (31)P NMR techniques. This was further corroborated well by interaction of 1 and 2 with 5'-GMP.
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Affiliation(s)
- Farukh Arjmand
- Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India.
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Arjmand F, Sharma GC, Muddassir M, Tabassum S. Synthesis and enantiopreferential DNA-binding profile of late 3d transition metal R- and S-enantiomeric complexes derived from N,N-bis-(1-benzyl-2-ethoxyethane): Validation of R-enantiomer of copper(II) complex as a human topoisomerase II inhibitor. Chirality 2011; 23:557-567. [PMID: 21695735 DOI: 10.1002/chir.20970] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2010] [Accepted: 04/12/2011] [Indexed: 09/12/2023]
Abstract
To evaluate the biological preference of chiral drug candidates for molecular target DNA, new potential metal-based chemotherapeutic agents 1-3 (a and b) of late 3d transition metals Ni(II), Cu(II), and Zn(II), respectively, derived from (R)- and (S)-2-amino-2-phenylethanol with CH(2) CH(2) linker were synthesized and thoroughly characterized. Interaction studies of 1-3 (a and b) with calf thymus DNA in Tris buffer were studied by electronic absorption titrations, luminescence titrations, cyclic voltammetry, and circular dichroism. The results reveal that the extent of DNA binding of R-enantiomer of copper 1a was highest in comparison to rest of the complexes via electrostatic interaction mode. The nuclease activity of 1(a and b) with supercoiled pBR322 DNA was further examined by gel electrophoresis, which reveals that complex 1a exhibits a remarkable DNA cleavage activity (concentration dependent) with pBR322DNA, and the cleavage activity of both enantiomers of complex 1 was significantly enhanced in the presence of activators. The activating efficiency follows the order Asc > H(2) O(2) > MPA for 1a, and reverse order was observed for 1b, because of the differences in enantioselectivity and conformation. Further, it was observed that cleavage reaction involves singlet oxygen species and superoxide radicals via oxidative cleavage mechanism. In addition, complex 1a exhibits significant inhibitory effects on the topoisomerase II (topo II) activity at a very low concentration ∼24 μM, which suggest that complex 1a is indeed catalytic inhibitor or (poison) of human topo II.
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Affiliation(s)
- Farukh Arjmand
- Department of Chemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India.
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Arjmand F, Sayeed F, Muddassir M. Synthesis of new chiral heterocyclic Schiff base modulated Cu(II)/Zn(II) complexes: their comparative binding studies with CT-DNA, mononucleotides and cleavage activity. J Photochem Photobiol B 2011; 103:166-79. [PMID: 21459607 DOI: 10.1016/j.jphotobiol.2011.03.001] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 02/17/2011] [Accepted: 03/01/2011] [Indexed: 12/28/2022]
Abstract
New Schiff base ligand L derived from the condensation reaction of 2-amino-3-formylchromone with (R)-2-amino-2-phenylethanol was synthesized and characterized which involves combination element of ammine functionality and naturally occurring heterocyclic chromone, 4H-benzopyran-4-one. Subsequently, their complexes 1 and 2 with Cu(NO₃)₂ and Zn(NO₃)₂, respectively were prepared. The DNA binding studies of the ligand L and complexes 1 and 2 with CT-DNA as compared to classical anticancer drug cisplatin were carried out by employing different optical methods viz, UV-vis, fluorescence, circular dichroism and viscosity measurements. Furthermore, the absorption studies, ¹H and ³¹P with mononucleotides were also monitored to examine the base specific interactions of the transition metal complexes which revealed a higher propensity of copper(II) complex 1 for 5'-GMP while for zinc(II) complex 2 towards 5'-TMP involving groove binding mechanism of the complexes towards DNA. The complex 1 exhibits a remarkable DNA cleavage activity with pBR322 DNA in presence of different activators and cleavage reaction involves various oxygen species suggesting the involvement of active oxygen species for the DNA scission.
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Affiliation(s)
- Farukh Arjmand
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India.
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Arjmand F, Muddassir M. A mechanistic approach for the DNA binding of chiral enantiomeric L- and D-tryptophan-derived metal complexes of 1,2-DACH: cleavage and antitumor activity. Chirality 2010; 23:250-9. [PMID: 20928895 DOI: 10.1002/chir.20907] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2009] [Accepted: 06/16/2010] [Indexed: 01/23/2023]
Abstract
A new chiral series of potential antitumor metal-based complexes 1-3(a and b) of L- and D-tryptophan have been synthesized and thoroughly characterized. Both enantiomers of 1-3 bind DNA noncovalently via phosphate interaction with slight preference of metal center for covalent coordination to nucleobases. The K(b) values of L-enantiomer, however, possess higher propensity for DNA binding in comparison with the D-enantiomeric analogs. The relative trend in K(b) values is as follows: 2(a) > 2(b) > 3(a) > 1(a) > 3(b) > 1(b). These observations together with the findings of circular dichoric and fluorescence studies reveal maximal potential of L-enantiomeric form of copper complex to bind DNA, thereby exerting its therapeutic effect. The complex 2a exhibits a remarkable DNA cleavage activity with pBR322DNA in the presence of different activators such as H(2) O(2) , ascorbic acid, 3-mercaptopropionic acid, and glutathione, suggesting the involvement of active oxygen species for the DNA scission. In vitro anticancer activity of complexes 1-3(a) were screened against 14 different human carcinoma cell lines of different histological origin, and the results reveal that 2a shows significant antitumor activity in comparison with both 1a and 3a and is particularly selective for MIAPACA2 (pancreatic cancer cell line).
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Affiliation(s)
- Farukh Arjmand
- Department of Chemistry, Aligarh Muslim University, Aligarh, Uttar Pradesh, India.
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Arjmand F, Muddassir M. Design and synthesis of heterobimetallic topoisomerase I and II inhibitor complexes: in vitro DNA binding, interaction with 5'-GMP and 5'-TMP and cleavage studies. J Photochem Photobiol B 2010; 101:37-46. [PMID: 20638859 DOI: 10.1016/j.jphotobiol.2010.06.009] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Revised: 06/11/2010] [Accepted: 06/21/2010] [Indexed: 10/19/2022]
Abstract
New potential cancer chemotherapeutic complexes Cu-Sn(2)/Zn-Sn(2) 3 and 4 were designed and prepared as topoisomerases inhibitors; their in vitro DNA binding studies were carried out which reveal strong electrostatic binding via phosphate backbone of DNA helix, in addition to other binding modes viz. coordinate covalent and partial intercalation. To throw insight to molecular binding event at the target site, UV-vis titrations of 3 and 4 with mononucleotides of interest, viz, 5'-GMP and 5'-TMP were carried out, (in case of 4) by (1)H and (31)P NMR. Cleavage studies employing gel electrophoresis demonstrate both the complexes 3 and 4 are efficient cleavage agents and are specific groove binders (complex 3 binds to both major and minor groove while complex 4 is specifically minor groove binder only). In addition, the complexes show high inhibition activity against topoisomerase I and II. However, complex 4 exhibits significant inhibitory effects on the Topo I activity at a very low concentration approximately 2.5 microM.
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Affiliation(s)
- Farukh Arjmand
- Department of Chemistry, Aligarh Muslim University, Aligarh 202 002, India.
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Arjmand F, Muddassir M, Khan RH. Chiral preference of L-tryptophan derived metal-based antitumor agent of late 3d-metal ions (Co(II), Cu(II) and Zn(II)) in comparison to D- and DL-tryptophan analogues: their in vitro reactivity towards CT DNA, 5'-GMP and 5'-TMP. Eur J Med Chem 2010; 45:3549-57. [PMID: 20537435 DOI: 10.1016/j.ejmech.2010.04.031] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Revised: 04/22/2010] [Accepted: 04/25/2010] [Indexed: 11/25/2022]
Abstract
To evaluate the biological preference of chiral drugs for molecular target DNA, new potential metal-based chemotherapeutic agents 1-3 (a-c) of late 3d-transition metals derived from l form, d form, and dl-tryptophan, respectively were synthesized and thoroughly characterized. Interaction studies of 1-3 (a-c) with CT DNA, 5'GMP and 5'-TMP have been carried out. The results reveal that the extent of DNA binding of l form of copper 2a was greatest in comparison to rest of complexes via electrostatic interaction. This was further confirmed by nuclease activity of 2a with supercoiled pBR322 DNA and it was observed that cleavage reaction involves various oxygen species and superoxide radicals by oxidative cleavage mechanism. The complex 2a exhibited significant antitumor activity against MCF-7 cell line.
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Affiliation(s)
- Farukh Arjmand
- Department of Chemistry, Aligarh Muslim University, Aligarh-202002, India.
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