1
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Garg P, Sharma H, Sehgal R, Kaur U, Garg V, Kaur B, Chaudhary GR, Kaur G. Antibacterial Photodynamic Therapy of the Metallosurfactant-Fluorescein Conjugate under Visible Light Illumination. ACS APPLIED BIO MATERIALS 2024; 7:5279-5289. [PMID: 39046905 DOI: 10.1021/acsabm.4c00498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
Antibacterial photodynamic therapy (APDT) has received increased attention as a treatment for multidrug-resistant bacterial infections caused by antibiotic abuse. However, photosensitizers used in APDT have disadvantages such as water insolubility, self-aggregation, and photobleaching. To address these limitations, metal complexes have been explored. However, the use of such complexes tends to confine their antibacterial effectiveness specific bacterial strains. In this study, we report iron (Fe)- and copper (Cu)-based metallosurfactants as unique moieties for antibacterial photodynamic therapy (PDT) under the illumination of visible light. Briefly, our formulated Fe and Cu metallosurfactants, when combined with a fluorescein photosensitizer, exhibit nearly 100% antibacterial efficacy. This high efficiency is primarily attributed to the enhanced generation of singlet oxygen using FL in the presence of metallosurfactants when targeting bacteria such as Escherichia coli and Staphylococcus aureus under laser light. In vitro experiments further confirmed the superior antimicrobial activity of these metallosurfactants against a diverse range of microbial cultures, encompassing Gram-negative and Gram-positive bacteria as well as fungi. This performance outpaces conventional surfactants like cetyltrimethylammonium chloride and cetylpyridinium chloride. The compelling results from MTT assays and flow cytometry endorsed the substantial enhancement in antimicrobial properties achieved through Fe and Cu doping, all without the need for additional secondary agents. Notably, this synergistic antibacterial approach using metallosurfactants in PDT holds significant promise for the elimination of various bacteria in vivo, with the added advantage of mitigating the emergence of multidrug resistance.
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Affiliation(s)
- Preeti Garg
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Harshita Sharma
- Department of Medical Parasitology, PGIMER, Chandigarh 160012, India
| | - Rakesh Sehgal
- Department of Medical Parasitology, PGIMER, Chandigarh 160012, India
| | - Upninder Kaur
- Department of Medical Parasitology, PGIMER, Chandigarh 160012, India
| | - Varinder Garg
- Department of Medical Parasitology, PGIMER, Chandigarh 160012, India
| | - Baljinder Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Ganga Ram Chaudhary
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Gurpreet Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
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2
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Rubčić M, Herak M, Zagorec L, Domazet Jurašin D. Transition Metal-Based Dimeric Metallosurfactants: From Organic-Inorganic Hybrid Structures and Low-Dimensional Magnets to Metallomicelles. Inorg Chem 2024; 63:12218-12230. [PMID: 38885971 PMCID: PMC11220752 DOI: 10.1021/acs.inorgchem.4c01550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/20/2024]
Abstract
The dimeric (gemini) as well as metallosurfactants exhibit enhanced physicochemical properties compared with conventional surfactants. By uniting the benefits of both, a series of novel dimeric metallosurfactants of the type (12-2-12)[MBr4] (M = Co, Ni, Cu and Zn) was successfully prepared by the reaction of the dimeric surfactant bis(N,N-dimethyl-N-dodecyl)ethylene-1,2-diammonium dibromide, 12-2-12, and the MBr2 salt. Structures and magnetic properties of the materials were studied comprehensively in the solid state, while their micellization was explored in solution. The obtained results unveil that the incorporation and the choice of transition metal more significantly influence surfactants' structures ((12-2-12)2+ cations adopt V-, U-, or trans-conformations) and the magnetic features (metal ions form 1D or 2D magnetic lattice) than their solution properties. However, all synthesized metallosurfactants display improved self-assembly properties compared with the metal-free precursor. The investigated systems represent a fruitful platform for the development of multifunctional materials as they are simple to produce, can be obtained in high yields, and show advanced properties both in solution and in the solid state. Notably, this work unveils a simple approach to the design and synthesis of novel low-dimensional magnetic systems of great potential for future spintronic and optoelectronic devices.
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Affiliation(s)
- Mirta Rubčić
- Faculty
of Science, Department of Chemistry, University
of Zagreb, Horvatovac 102a ,Zagreb HR-10000, Croatia
| | - Mirta Herak
- Department
for Research of Materials Under Extreme Conditions, Institute of Physics, Bijenička cesta 46 ,Zagreb HR-10000, Croatia
| | - Leona Zagorec
- Faculty
of Chemical Engineering and Technology, University of Zagreb, Trg Marka Marulića 19 ,Zagreb HR-10000, Croatia
| | - Darija Domazet Jurašin
- Division
of Physical Chemistry, Ruđer Bošković
Institute, Bijenička
54 ,Zagreb HR-10000, Croatia
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3
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Sharma B, Jain A, Rawson FJ, Chaudhary GR, Pérez-García L, Kaur G. Biocompatible metallosurfactant-based nanocolloid-loaded Rose Bengal with excellent singlet oxygen-induced phototoxicity efficiency against cancer cells. J Mater Chem B 2023. [PMID: 37191118 DOI: 10.1039/d2tb02730e] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Photodynamic therapy (PDT) is facing challenges such as poor solubility, precise delivery, self-aggregation, and photobleaching of photosensitizers with cancer cells due to their less tendency to accumulate in tumor tissues. To address these challenges, we have explored a Rose Bengal (RB)-loaded metallocatanionic vesicles (MCVs) nanosystem for the phototoxicity of cancer cells. Different sets of MCVs were prepared by two different cationic single-chain metallosurfactants, i.e., hexadecylpyridinium trichlorocuprate (CuCPC I) and hexadecylpyridinium trichloroferrate (FeCPC I) in combination with anionic double-chain sodium bis(2-ethylhexyl)sulfosuccinate (AOT) surfactant in phosphate buffer saline of pH 7.4. The RB-loaded CuCPC I:AOT and FeCPC I:AOT vesicles enhanced the maximum singlet oxygen (1O2) generation by 1-fold and 3-fold, respectively, compared to pure RB. Upon irradiation with a 532 nm laser for 10 min, these RB-loaded CuCPC I:AOT and FeCPC I:AOT MCVs significantly decreased the metabolic activity of U-251 cells by 70% and 85% at MCVs concentration of 0.75 μM, respectively. Furthermore, RB-loaded MCVs showed the highest intracellular 1O2-mediated membrane damage and cell-killing effect as confirmed by singlet oxygen sensor green and differential nuclear staining assay, which is attributed to the cellular uptake profile of different RB-loaded MCVs fractions. Caspase 3/7 assay confirmed the apoptotic pathway of cell death by activating caspase. Therefore, the photoactivation of RB-loaded MCVs led to a significant reduction in the viability of U-251 cells (maximum 85%), which resulted in cell death. Our study demonstrated the advantage of using these dual-charge and biocompatible metallocatanionic vesicles as a promising delivery system of photodynamic therapy that can enhance 1O2 generation from PS and can be further utilized in photomedicine.
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Affiliation(s)
- Bunty Sharma
- Department of Chemistry, Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh-160014, India.
- Division of Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK.
| | - Akhil Jain
- Division of Regenerative Medicine and Cellular Therapies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Frankie J Rawson
- Division of Regenerative Medicine and Cellular Therapies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK
| | - Ganga Ram Chaudhary
- Department of Chemistry, Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh-160014, India.
| | - Lluïsa Pérez-García
- Division of Advanced Materials and Healthcare Technologies, School of Pharmacy, University of Nottingham, Nottingham NG7 2RD, UK.
- Departament de Farmacologia, Toxicologia i Química Terapèutica, Facultat de Farmàcia i Ciències de l'Alimentació, Avda. Joan XXIII 27-31, Universitat de Barcelona, 08028 Barcelona, Spain
- Institut de Nanociència i Nanotecnologia UB (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain
| | - Gurpreet Kaur
- Department of Chemistry, Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh-160014, India.
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4
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Complex of alkylated derivative of 1,4-diazabicyclo[2.2.2]octane with palladium dichloride: synthesis, self-association, and biological activity. Russ Chem Bull 2022. [DOI: 10.1007/s11172-022-3413-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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5
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Hussain A, Shuaibu AD, Shaikh AJ, Khan AM. Exploring the effects of selected essential amino acids on the self-association of sodium dodecyl sulphate at different temperatures. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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6
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Zakharova L, Voloshina AD, Ibatullina MR, Zhiltsova EP, Lukashenko SS, Kuznetsova DA, Kutyreva MP, Sapunova AS, Kufelkina AA, Kulik NV, Kataeva O, Ivshin KA, Gubaidullin AT, Salnikov VV, Nizameev IR, Kadirov MK, Sinyashin OG. Self-Assembling Metallocomplexes of the Amphiphilic 1,4-Diazabicyclo[2.2.2]octane Derivative as a Platform for the Development of Nonplatinum Anticancer Drugs. ACS OMEGA 2022; 7:3073-3082. [PMID: 35097302 PMCID: PMC8793087 DOI: 10.1021/acsomega.1c06465] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/04/2022] [Indexed: 06/14/2023]
Abstract
New 1-cetyl-4-aza-1-azoniabicyclo[2.2.2]octane bromide complexes with copper(II) bromide and lanthanum(III) nitrate were characterized using dynamic light scattering and transmission electron microscopy, with self-assembly and the morphological behavior elucidated. For the lanthanum(III) nitrate complex, the 3D crystal structure was characterized using X-ray diffractometry. These metallosurfactants were tested as antitumor agents, and a high cytotoxic effect comparable with doxorubicin was revealed against the M-HeLa and A-549 cell lines. Both complexes were 2 times more active toward the MCF-7 cell line than the breast cancer drug tamoxifen. The cytotoxic mechanism of complexes is assumed to be related to the induction of apoptosis through the mitochondrial pathway.
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Affiliation(s)
- Lucia
Ya. Zakharova
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
| | - Alexandra D. Voloshina
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
| | - Marina R. Ibatullina
- A.M.
Butlerov Chemistry Institute, Kazan Federal
University, Kremlevskaya
Str. 18, Kazan 420008, Russia
| | - Elena P. Zhiltsova
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
| | - Svetlana S. Lukashenko
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
| | - Darya A. Kuznetsova
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
| | - Marianna P. Kutyreva
- A.M.
Butlerov Chemistry Institute, Kazan Federal
University, Kremlevskaya
Str. 18, Kazan 420008, Russia
| | - Anastasiia S. Sapunova
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
| | - Anna A. Kufelkina
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
| | - Natalia V. Kulik
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
| | - Olga Kataeva
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
| | - Kamil A. Ivshin
- A.M.
Butlerov Chemistry Institute, Kazan Federal
University, Kremlevskaya
Str. 18, Kazan 420008, Russia
| | - Aidar T. Gubaidullin
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
| | - Vadim V. Salnikov
- Kazan
Institute of Biochemistry and Biophysics, FRC Kazan Scientific Center of RAS, Lobachevsky Street 2/31, Kazan 420111, Russia
| | - Irek R. Nizameev
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
| | - Marsil K. Kadirov
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
| | - Oleg G. Sinyashin
- Arbuzov
Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, Arbuzov Str. 8, Kazan 420088, Russia
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7
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Teoman B, Muneeswaran ZP, Verma G, Chen D, Brinzari TV, Almeda-Ahmadi A, Norambuena J, Xu S, Ma S, Boyd JM, Armenante PM, Potanin A, Pan L, Asefa T, Dubovoy V. Cetylpyridinium Trichlorostannate: Synthesis, Antimicrobial Properties, and Controlled-Release Properties via Electrical Resistance Tomography. ACS OMEGA 2021; 6:35433-35441. [PMID: 34984275 PMCID: PMC8717397 DOI: 10.1021/acsomega.1c04034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 11/24/2021] [Indexed: 06/14/2023]
Abstract
Cetylpyridinium trichlorostannate (CPC-Sn), comprising cetylpyridinium chloride (CPC) and stannous chloride, was synthesized and characterized via single-crystal X-ray diffraction measurements indicating stoichiometry of C21H38NSnCl3 where the molecules are arranged in a 1:1 ratio with a cetylpyridinium cation and a [SnCl3]- anion. CPC-Sn has shown potential for application as a broad-spectrum antimicrobial agent, to reduce bacteria-generated volatile sulfur compounds and to produce advanced functional materials. In order to investigate its controlled-release properties, electrical resistance tomography was implemented. The results demonstrate that CPC-Sn exhibits extended-release properties in an aqueous environment as opposed to the CPC counterpart.
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Affiliation(s)
- Baran Teoman
- Colgate-Palmolive
Company, 909 River Road, Piscataway, New Jersey 08854, United States
- Otto
H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology, 323 Dr. Martin Luther King Jr Boulevard, Newark, New Jersey 07102, United States
| | - Zilma Pereira Muneeswaran
- Colgate-Palmolive
Company, 909 River Road, Piscataway, New Jersey 08854, United States
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854, United States
| | - Gaurav Verma
- Department
of Chemistry, University of North Texas, 1508 W. Mulberry Street, Denton, Texas 76201, United States
| | - Dailin Chen
- Colgate-Palmolive
Company, 338 Qingnian
Road, Economic Development Zone, Guangzhou 510620, China
| | - Tatiana V. Brinzari
- Colgate-Palmolive
Company, 909 River Road, Piscataway, New Jersey 08854, United States
| | - Allison Almeda-Ahmadi
- Department
of Biochemistry and Microbiology, Rutgers, The State University of New Jersey, 71 Lipman Drive, New Brunswick, New Jersey 08901, United States
| | - Javiera Norambuena
- Department
of Biochemistry and Microbiology, Rutgers, The State University of New Jersey, 71 Lipman Drive, New Brunswick, New Jersey 08901, United States
| | - Shaopeng Xu
- Colgate-Palmolive
Company, 338 Qingnian
Road, Economic Development Zone, Guangzhou 510620, China
| | - Shengqian Ma
- Department
of Chemistry, University of North Texas, 1508 W. Mulberry Street, Denton, Texas 76201, United States
| | - Jeffrey M. Boyd
- Department
of Biochemistry and Microbiology, Rutgers, The State University of New Jersey, 71 Lipman Drive, New Brunswick, New Jersey 08901, United States
| | - Piero M. Armenante
- Otto
H. York Department of Chemical and Materials Engineering, New Jersey Institute of Technology, 323 Dr. Martin Luther King Jr Boulevard, Newark, New Jersey 07102, United States
| | - Andrei Potanin
- Colgate-Palmolive
Company, 909 River Road, Piscataway, New Jersey 08854, United States
| | - Long Pan
- Colgate-Palmolive
Company, 909 River Road, Piscataway, New Jersey 08854, United States
| | - Tewodros Asefa
- Department
of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854, United States
- Department
of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, 98 Brett Road, Piscataway, New Jersey 08854, United States
| | - Viktor Dubovoy
- Colgate-Palmolive
Company, 909 River Road, Piscataway, New Jersey 08854, United States
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8
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Kaur G, Garg P, Kaur N, Mittal M, Chaudhary GR, Gawali SL, Hassan PA. Assessment of structural integrity of lysozyme in the presence of newly formed uni/multivesicular metallosomes. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116871] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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9
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Kaushik P, Kaur G, Chaudhary GR, Batra U. Tuning the surface using palladium based metallosurfactant for hydrogen evolution reaction. J Colloid Interface Sci 2021; 582:894-905. [PMID: 32919117 DOI: 10.1016/j.jcis.2020.08.090] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 08/03/2020] [Accepted: 08/25/2020] [Indexed: 10/23/2022]
Abstract
Synthesis of a novel electrocatalyst for hydrogen evolution reaction (HER) is highly demanding for renewable energy production. This research reports the design and development of novel palladium based metallosurfactant (PdCPC(I)) that belongs to the unique class of inorganic-organic hybrid with striking structural features that are explored for the first time in the HER. The formation of the micelle, molecular orientation and surface characteristics of the metallosurfactant are calculated by conductivity and contact angle measurements. The reduction of palladium in metallomicelles during electrolysis accelerates the HER. Metallosurfactant makes the substrate hydrophilic, which in turn enhances the activity of the modified substrate. The 269 mV and 400 mV (vs RHE) overpotential is required to achieve the 10 mA cm-2 of current density for PdCPC(I) and CPC, respectively. Tafel slope of PdCPC(I) is 57 mV dec-1, which signifies that the reaction follows the Volmer- Heyrovsky mechanism in the presence of catalyst. The presence of the palladium in the core of the micelle is certified by ICPMS study. The present electrocatalyst also demonstrates 40 h of electrochemical durability. This work opens the doors toward the enhancement of HER, which fulfills the dreams for future energy resources.
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Affiliation(s)
- Pradeep Kaushik
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Gurpreet Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India.
| | - Ganga Ram Chaudhary
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Uma Batra
- Department of Materials and Metallurgical Engineering, PEC University of Technology, Chandigarh 160012, India.
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10
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Sharma B, Kaur G, Chaudhary GR. Optimization and utilization of single chain metallocatanionic vesicles for antibacterial photodynamic therapy (aPDT) against E. coli. J Mater Chem B 2020; 8:9304-9313. [PMID: 32966540 DOI: 10.1039/d0tb01551b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Currently, bacterial infection due to multi-drug-resistant bacteria is one of the foremost problems in public health. Photodynamic therapy plays a significant role against bacterial infection, without causing any side effects. But the photosensitizers are associated with many drawbacks, which lessen their photodynamic efficiency. In this context, the current study describes the synthesis of new metallocatanionic vesicles and employs them in photodynamic therapy. These vesicles were synthesized by using a single-chain cationic metallosurfactant (CuCPC I) and sodium oleate (NaOl) as an anionic component. These vesicles were characterized from conductivity, dynamic light scattering, zeta potential, field emission scanning electron microscopy, and confocal microscopy measurements. Methylene blue (MB) was used as a photosensitizer and its singlet oxygen quantum yield in the presence of these vesicles was determined by irradiating with 650 nm wavelength laser light. These vesicles play a dual-functional role, one helping in delivering the photosensitizer and the second doubling their singlet oxygen production capability due to the presence of metal ions. Antibacterial photodynamic therapy (aPDT) was studied against E. coli bacteria (Gram-negative bacteria). These vesicles also inherit their antibacterial activity and MB-encapsulated metallocatanionic vesicles on irradiation have shown 100% killing efficiency. In summary, we offer metallocatanionic vesicles prepared via a facile approach, which encapsulate a photosensitizer and can be used to combat E. coli infection through photodynamic therapy. We envisage that these synthesized metallocatanionic vesicles will provide a new modification to the catanionic mixture family and could be used for various applications in the future.
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Affiliation(s)
- Bunty Sharma
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India.
| | - Gurpreet Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India.
| | - Ganga Ram Chaudhary
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India.
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11
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Investigation of counterion effects of transition metal cations (Fe3+, Cu2+, Zn2+) on cetrimonium bromide using cyclic voltammetry. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113599] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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12
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Garg P, Kaur G, Sharma B, Chaudhary GR. Fluorescein-Metal Hybrid Surfactant Conjugates as a Smart Material for Antimicrobial Photodynamic Therapy against Staphylococcus aureus. ACS APPLIED BIO MATERIALS 2020; 3:4674-4683. [PMID: 35025466 DOI: 10.1021/acsabm.0c00586] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Photodynamic therapy (PDT) has been extensively used as an effective alternative for the treatment of bacterial infection using photosensitizers (PSs) in the presence of appropriate light. However, the limitation in the effectiveness of PDT is because of the low yield of singlet oxygen from existing PSs because of their low solubility. Thus, we have developed a platform to enhance the solubility and the photodynamic activity of PSs against bacterial cells using metallosurfactants. Herein, we have used manganese metal-containing single- (MnC I) and double-chain metallosurfactants (MnC II) which show an interplay of electrostatic/hydrophobic interactions with fluorescein (FL) dye (as a PS) and when used in the presence of light enhances the PDT. These interactions play a significant role in enhancing the singlet oxygen generation efficiency of FL. MnC I and MnC II have shown good antimicrobial activity against Gram-positive Staphylococcus aureus (S. aureus) bacteria. More interestingly, these metallosurfactants when combined with FL significantly enhanced the affectivity against S. aureus, wherein 100% killing was achieved. As compared to experiments performed in the dark, the metallosurfactant, by enhancing the solubility of FL, increases the formation of singlet oxygen upon light irradiation and thus increases cell death. Therefore, the synergistic effect of FL (light toxicity) and metallosurfactants (dark toxicity) defined excellent reduction in the colony formation of bacteria. These results were corroborated through field-emission scanning electron microscopy and optical microscopy, where the rupturing of the cell wall of bacterial cells was observed during this therapy. Moreover, the binding of metallosurfactants to the genomic DNA of S. aureus was also evaluated by gel retardation analysis and UV-visible spectroscopy. The outcomes from this study will deliver formulations for PDT which can be used in clinical medical applications and cancer therapy in the future.
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Affiliation(s)
- Preeti Garg
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Gurpreet Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Bunty Sharma
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Ganga Ram Chaudhary
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
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13
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Dubovoy V, Nawrocki S, Verma G, Wojtas L, Desai P, Al-Tameemi H, Brinzari TV, Stranick M, Chen D, Xu S, Ma S, Boyd JM, Asefa T, Pan L. Synthesis, Characterization, and Investigation of the Antimicrobial Activity of Cetylpyridinium Tetrachlorozincate. ACS OMEGA 2020; 5:10359-10365. [PMID: 32426592 PMCID: PMC7226859 DOI: 10.1021/acsomega.0c00131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 04/09/2020] [Indexed: 06/11/2023]
Abstract
Cetylpyridinium tetrachlorozincate (referred to herein as (CP)2ZnCl4) was synthesized and its solid-state structure was elucidated via single-crystal X-ray diffraction (SC-XRD), revealing a stoichiometry of C42H76Cl4N2Zn with two cetylpyridinium (CP) cations per [ZnCl4]2- tetrahedra. Crystal structures at 100 and 298 K exhibited a zig-zag pattern with alternating alkyl chains and zinc units. The material showed potential for application as a broad-spectrum antimicrobial agent, to reduce volatile sulfur compounds (VSCs) generated by bacteria, and in the fabrication of advanced functional materials. Minimum inhibitory concentration (MIC) of (CP)2ZnCl4 was 60, 6, and 6 μg mL-1 for Salmonella enterica, Staphylococcus aureus, and Streptococcus mutans, respectively. The MIC values of (CP)2ZnCl4 were comparable to that of pure cetylpyridinium chloride (CPC), despite the fact that approximately 16% of the bactericidal CPC is replaced with bacteriostatic ZnCl2 in the structure. A modified layer-by-layer deposition technique was implemented to synthesize mesoporous silica (i.e., SBA-15) loaded with approximately 9.0 wt % CPC and 8.9 wt % Zn.
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Affiliation(s)
- Viktor Dubovoy
- Department
of Chemistry and Chemical Biology, Rutgers,
The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854, United States
| | - Shiri Nawrocki
- Department
of Medicine, Rutgers Robert Wood Johnson
Medical School, 675 Hoes
Lane West, Piscataway, New
Jersey 08854, United
States
| | - Gaurav Verma
- Department
of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida33620, United States
| | - Lukasz Wojtas
- Department
of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida33620, United States
| | - Primit Desai
- Department
of Biochemistry and Microbiology, Rutgers,
The State University of New Jersey, 71 Lipman Drive, New Brunswick, New Jersey 08854, United States
| | - Hassan Al-Tameemi
- Department
of Biochemistry and Microbiology, Rutgers,
The State University of New Jersey, 71 Lipman Drive, New Brunswick, New Jersey 08854, United States
| | - Tatiana V. Brinzari
- Colgate-Palmolive
Company, 909 River Road, Piscataway, New Jersey 08854, United States
| | - Michael Stranick
- Colgate-Palmolive
Company, 909 River Road, Piscataway, New Jersey 08854, United States
| | - Dailin Chen
- Colgate-Palmolive
Company, 338 Qingnian
Road, Economic Development Zone, Guangzhou 510620, China
| | - Shaopeng Xu
- Colgate-Palmolive
Company, 338 Qingnian
Road, Economic Development Zone, Guangzhou 510620, China
| | - Shengqian Ma
- Department
of Chemistry, University of South Florida, 4202 East Fowler Avenue, Tampa, Florida33620, United States
| | - Jeffrey M. Boyd
- Department
of Biochemistry and Microbiology, Rutgers,
The State University of New Jersey, 71 Lipman Drive, New Brunswick, New Jersey 08854, United States
| | - Tewodros Asefa
- Department
of Chemistry and Chemical Biology, Rutgers,
The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854, United States
- Department
of Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, 98 Brett Road, Piscataway, New Jersey 08854, United States
| | - Long Pan
- Colgate-Palmolive
Company, 909 River Road, Piscataway, New Jersey 08854, United States
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14
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Sharma B, Kaur G, Chaudhary GR, Gawali SL, Hassan PA. High antimicrobial photodynamic activity of photosensitizer encapsulated dual-functional metallocatanionic vesicles against drug-resistant bacteria S. aureus. Biomater Sci 2020; 8:2905-2920. [PMID: 32307486 DOI: 10.1039/d0bm00323a] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Developments in the field of photodynamic therapy (PDT) are being made by investigating appropriate photosensitizers (PSs) and enhancing the penetration effect of light by developing new nano-carriers. So, to boost the PDT effect, in the present work, new metallocatanionic vesicles were fabricated by a convenient, efficient, green and inexpensive method to encapsulate PSs and evaluate their antimicrobial PDT against the drug-resistant bacterium Staphylococcus aureus. They were prepared from a combination of a double-chained copper-based cationic metallosurfactant (CuCPCII) and an anionic surfactant sodium bis(2-ethylhexyl)sulfosuccinate (Aerosol OT or AOT). The surface charge, structure and ability to encapsulate oppositely charged photosensitizers are some crucial factors that need to be controlled for their effective utilization in PDT. In this approach, two of the fractions, one each from a cationic rich and anionic rich side, were selected to encapsulate cationic (methylene blue; MB) and anionic (rose bengal (RB)) PSs after characterization by SAXS, AFM, FESEM, DLS, and zeta-potential, and conductivity measurements. Afterwards, PDT was performed on S. aureus (a multidrug-resistant bacterium) by the colony forming unit (CFU) method using PS encapsulated metallocatanionic vesicles that demonstrated high bactericidal activity by using visible light (532 nm) and facilitated the generation of singlet oxygen. The singlet oxygen generation capability of both the PSs was enhanced under irradiation when encapsulated in metallocatanionic vesicles because the presence of metal accelerated the intersystem crossing of triplet oxygen to singlet oxygen. Furthermore, these studies reveal that the metallocatanionic vesicles have dual functionality i.e. encapsulate PSs and even show dark toxicity against S. aureus. To study the killing of S. aureus, bacterial DNA was extracted and its interactions and conformational changes in the presence of metallocatanionic vesicles were analyzed via., UV-Visible, and circular dichroism (CD) spectroscopy. Comet assay (single-cell gel-electrophoresis) demonstrated the DNA damage after PDT treatment in an individual cell. The bacterial DNA damage was more with the metallosurfactant rich 70 : 30 fraction than with the 30 : 70 fraction, in combination with RB under irradiation. This work provides a new metal hybrid smart material that possesses dual functionality and is prepared by an easy, economical and feasible procedure which resulted in enhanced PDT against a drug-resistant bacterium, thus, providing an alternative for antibacterial therapy.
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Affiliation(s)
- Bunty Sharma
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India.
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15
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Pradeep, Kaur G, Chaudhary GR, Batra U. Investigating affordable cobalt based metallosurfactant as an efficient electrocatalyst for hydrogen evolution reaction. J Colloid Interface Sci 2020; 562:598-607. [PMID: 31771877 DOI: 10.1016/j.jcis.2019.11.073] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/15/2019] [Accepted: 11/16/2019] [Indexed: 12/13/2022]
Abstract
The implementation of hydrogen evolution reaction (HER) is an essential requirement of a stable electrocatalyst that competes for the performance of noble metals (Pt, Pd), especially in acidic conditions. This research reports the design and development of affordable cobalt (Co) based metallosurfactant (CoCPC(I)) which performs under acidic medium (0.5 N H2SO4) for HER. Such a fabricated catalyst is able to lower the cathodic potentials efficiently and exhibits 130 mV onset potential and Tafel slope of 104 mVdec-1 that depicts the presence of Volmer-Heyrovsky mechanism. The results of the studies confirm that our synthesized metallosurfactant forms metallomicelles on the surface of electrode and surface remains stable even after the electrochemical cycle. Further, the surfactant protects the metal centre as an active site for a longer time via forming metallo-micelles which helps to sustain activity. These outcomes reveal the efficient mass and charge transfer capability of CoCPC(I) which results in faster charge transfer kinetics. Therefore, the utilization of Co based metallosurfactant can split water easily, cost-effectively, and without using hazardous chemicals. Our demonstrated technology seems suitable for industrial applications due to features of large-scale production possibilities.
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Affiliation(s)
- Pradeep
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Gurpreet Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India.
| | - Ganga Ram Chaudhary
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Uma Batra
- Department of Materials and Metallurgical Engineering, PEC University of Technology, Chandigarh 160012, India.
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16
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Wagay TA, Askari H, Ismail K. Synthesis, aggregation and adsorption behavior of benzyldimethylhexadecylammonium based double-chained metallosurfactants. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112234] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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17
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Kaur G, Kaur B, Garg P, Chaudhary GR, Gawali SL, Hassan P. A study of synthesis, characterization and metalloplex formation ability of cetylpyridinium chloride based metallosomes. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2019.112326] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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18
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Schattschneider C, Doniz Kettenmann S, Hinojosa S, Heinrich J, Kulak N. Biological activity of amphiphilic metal complexes. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.12.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Kaur G, Garg P, Kaur B, Chaudhary GR, Kumar S, Dilbaghi N, Hassan PA, Aswal VK. Synthesis, thermal and surface activity of cationic single chain metal hybrid surfactants and their interaction with microbes and proteins. SOFT MATTER 2019; 15:2348-2358. [PMID: 30810157 DOI: 10.1039/c9sm00046a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A series of water-soluble metal functionalized surfactants have been prepared using commercially available surfactant cetyl pyridinium chloride and transition metal salts. These complexes were characterized in the solid state by elemental analysis, FTIR, 1H NMR and thermogravimetric analysis. The interfacial surface activity and aggregation behaviour of the metallosurfactants were analysed through conductivity, surface tension and small angle neutron scattering measurements. Our results show that the presence of metal ions as co-ions along with counter ions favours micellization at a low critical micellization concentration (CMC). Small angle neutron scattering revealed that the metallomicelles are of a prolate ellipsoidal shape and exhibit strong counterion binding. This article further describes the interaction of the metallosurfactants with transport protein Bovine Serum Albumin (BSA) using different spectroscopic techniques. A spectroscopic study was used to study the binding, interaction and quenching mechanism of BSA with the metallosurfactants. Gel electrophoresis (SDS-PAGE) and circular dichroism (CD) investigated the structural and conformational changes produced in BSA due to the metallosurfactants. The results indicate that there is an alteration in the secondary structure of BSA due to the electrostatic interaction between positive head groups and metal co-ions of the metallosurfactants and negatively charged amino acids of BSA. As the concentration increases, the α-helicity of BSA decreases and all the three studied metallosurfactants gave comparable results. Finally, the in vitro cytotoxicity and antimicrobial activity of the metallosurfactants were evaluated against erythrocytes and microorganisms, which showed prominent effects related to the presence of a metal ion in metallomicelles of the hybrid surfactants.
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Affiliation(s)
- Gurpreet Kaur
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160 014, India.
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20
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Sharma NK, Singh M. New class of Platinum based metallosurfactant: Synthesis, micellization, surface, thermal modelling and in vitro biological properties. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.07.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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21
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Sharma NK, Singh M. Multifunctional supramolecular ionic metallosurfactants (SMIMSs) for antimicrobial, anticancer and serum albumins binding. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.04.138] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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22
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Kaur G, Garg P, Kaur B, Chaudhary GR, Kumar S, Dilbaghi N, Hassan PA, Gawali SL. Cationic double chained metallosurfactants: synthesis, aggregation, cytotoxicity, antimicrobial activity and their impact on the structure of bovine serum albumin. SOFT MATTER 2018; 14:5306-5318. [PMID: 29904765 DOI: 10.1039/c8sm00535d] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bovine serum albumin (BSA) is one of the most copious and significant blood proteins with dynamic structure. The understanding of the structural functionality of BSA and its interaction with metal ions is desired for various biological functions. Herein, three different metallosurfactants containing different transition metals and the same hydrophobic tail were engaged to investigate the structural transition of BSA. The metallosurfactants have been prepared by a combination of metal ions (M = Fe, Co and Ni) with cetylpyridinium chloride surfactant via the ligand insertion method and were characterized by elemental, FTIR, 1H-NMR, and thermogravimetric analysis (TGA). The obtained results reveal that insertion of a metal ion perturbs the aggregation behavior of the surfactant. Incorporation of a metal-ion has been found to decrease the CMC value of the surfactant, which has been supported by conductivity, surface tension and small angle X-ray scattering (SAXS). These metallosurfactants were employed to study the interaction and binding mechanism of BSA under physiological conditions. SDS-PAGE analysis points out a weak effect of metallosurfactants on the primary structure of BSA, whereas CD spectra implied a significant change in secondary structure with the decreased α-helical content of BSA. Fluorescence spectroscopy indicates the effect of metallosurfactants on the tertiary structure of BSA, whereas absorption spectra demonstrated static quenching with a blue shift in the presence of metallosurfactants. Moreover, unfolding of BSA in the presence of metallosurfactants has also been confirmed by SAXS studies. The overall results indicate that insertion of the metal ion into the framework of the surfactant structure enhances its protein binding/folding/unfolding abilities, which would be helpful in clinical as well as in life sciences.
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Affiliation(s)
- Gurpreet Kaur
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160 014, India.
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23
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Dogra V, Kaur G, Kaur A, Kumar R, Kumar S. In vitro assessment of antimicrobial and genotoxic effect of metallosurfactant based nickel hydroxide nanoparticles against Escherichia coli and its genomic DNA. Colloids Surf B Biointerfaces 2018; 170:99-108. [PMID: 29894838 DOI: 10.1016/j.colsurfb.2018.05.069] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 05/15/2018] [Accepted: 05/30/2018] [Indexed: 11/16/2022]
Abstract
In the present study, we have synthesized nickel hydroxide nanosuspensions (Ns) using microemulsion technique. This approach is eco-friendly and makes use of Tween 80 (a non-ionic biocompatible surfactant) and newly synthesized metallosurfactants for the formation of uniform nanoparticles in the form of nanosuspensions (Ns). The nickel hydroxide Ns's were derived from three different metallosurfactants i.e. NiCTAC (Bishexadecyltrimethylammonium nickel tetrachloride), NiDDA (Bisdodecylamine nickel dichloride) and NiHEXA (bishexadecylamine nickel dichloride). Three different nickel-based metallosurfactants were synthesized and characterized using various methods such as CHN, 1HNMR, and FTIR. Fabrication of nanosuspension was confirmed using different characterization methods such as Transmission electron microscopy (TEM), Field Emission Scanning Electron Microscope (FESEM), Energy Dispersive X-ray Spectroscopy (EDX), X-ray Diffraction (XRD), pH and Zeta potential. These particles were further investigated for their genotoxic and cytotoxic effects on gram-negative bacteria, Escherichia coli (E. coli). Effect of nanosuspensions on E. coli was confirmed using colony forming unit count, agar well diffusion, and gram staining method. Through colony forming unit count method, nanosuspensions influence on the colony-forming capacity of E. coli cells was confirmed. Agar well diffusion method provides the estimation of antimicrobial activity, and the largest inhibition zone was observed for NiCTAC Ns and smallest for NiHEXA Ns which is related to maximum and minimum bactericidal properties of Ns, respectively. The interaction behavior of bacterial DNA with Ni nanosuspension was analyzed using agarose gel electrophoresis and circular dichroism. Along with, the role of different chemical scavengers was also evaluated in DNA damage using gel electrophoresis. Furthermore, the antioxidant activity of Ni nanosuspension was also confirmed using DPPH assay.
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Affiliation(s)
- Varsha Dogra
- Department of Environment Studies, Panjab University, Chandigarh, India
| | - Gurpreet Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India.
| | - Amanpuneet Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | - Rajeev Kumar
- Department of Environment Studies, Panjab University, Chandigarh, India
| | - Sandeep Kumar
- Department of Bio and Nano Technology, Guru Jambheshwar University of Science & Technology, Hisar 125 001, Haryana, India
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24
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Garg P, Kaur G, Chaudhary GR, Kaur S, Gawali SL, Hassan P. Investigating the structural integrity of Bovine serum albumin in presence of newly synthesized metallosurfactants. Colloids Surf B Biointerfaces 2018; 164:116-124. [DOI: 10.1016/j.colsurfb.2018.01.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/03/2018] [Accepted: 01/15/2018] [Indexed: 12/14/2022]
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25
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Garg P, Kaur G, Chaudhary GR. Chromium-based metallosurfactants: synthesis, physicochemical characterization and probing of their interactions with xanthene dyes. NEW J CHEM 2018. [DOI: 10.1039/c7nj04226d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The solubilization of xanthene dyes of variable solubility has been estimated in chromium based metallosurfactants.
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Affiliation(s)
- Preeti Garg
- Department of Chemistry and Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Gurpreet Kaur
- Department of Chemistry and Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Ganga Ram Chaudhary
- Department of Chemistry and Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
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26
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Bhar R, Kaur G, Mehta S. Experimental validation of DNA interactions with nanoparticles derived from metal coupled amphiphiles. J Biomol Struct Dyn 2017; 36:3614-3622. [DOI: 10.1080/07391102.2017.1398682] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Rekha Bhar
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | - Gurpreet Kaur
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, India
| | - S.K. Mehta
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh, India
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27
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28
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Bergemann C, Zaatreh S, Wegner K, Arndt K, Podbielski A, Bader R, Prinz C, Lembke U, Nebe JB. Copper as an alternative antimicrobial coating for implants - An in vitro study. World J Transplant 2017; 7:193-202. [PMID: 28698836 PMCID: PMC5487309 DOI: 10.5500/wjt.v7.i3.193] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 04/10/2017] [Accepted: 05/15/2017] [Indexed: 02/05/2023] Open
Abstract
AIM To investigate osteoconductive and antimicrobial properties of a titanium-copper-nitride (TiCuN) film and an additional BONIT® coating on titanium substrates.
METHODS For micro-structuring, the surface of titanium test samples was modified by titanium plasma spray (TPS). On the TPS-coated samples, the TiCuN layer was deposited by physical vapor deposition. The BONIT® layer was coated electrochemically. The concentration of copper ions released from TiCuN films was measured by atomic absorption spectrometry. MG-63 osteoblasts on TiCuN and BONIT® were analyzed for cell adhesion, viability and spreading. In parallel, Staphylococcus epidermidis (S. epidermidis) were cultivated on the samples and planktonic and biofilm-bound bacteria were quantified by counting of the colony-forming units.
RESULTS Field emission scanning electron microscopy (FESEM) revealed rough surfaces for TPS and TiCuN and a special crystalline surface structure on TiCuN + BONIT®. TiCuN released high amounts of copper quickly within 24 h. These release dynamics were accompanied by complete growth inhibition of bacteria and after 2 d, no planktonic or adherent S. epidermidis were found on these samples. On the other hand viability of MG-63 cells was impaired during direct cultivation on the samples within 24 h. However, high cell colonization could be found after a 24 h pre-incubation step in cell culture medium simulating the in vivo dynamics closer. On pre-incubated TiCuN, the osteoblasts span the ridges and demonstrate a flattened, well-spread phenotype. The additional BONIT®coating reduced the copper release of the TiCuN layer significantly and showed a positive effect on the initial cell adhesion.
CONCLUSION The TiCuNcoating inhibits the formation of bacterial biofilms on orthopedic implants by influencing the “race for the surface” to the advantage of osteoblasts.
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29
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Garg P, Kaur G, Chaudhary GR, Gawali SL, Hassan PA. Fabrication of metalosomes (metal containing cationic liposomes) using single chain surfactants as a precursor via formation of inorganic organic hybrids. Phys Chem Chem Phys 2017; 19:25764-25773. [DOI: 10.1039/c7cp02908j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This work reveals a methodology to modify a single chain surfactant to fabricate a liposome-like assembly by controlling the stoichiometry by virtue of a metallic counter ion. It is a noteworthy advancement in the area of self-assembled molecular structures.
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Affiliation(s)
- Preeti Garg
- Department of Chemistry and Centre of Advanced studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Gurpreet Kaur
- Department of Chemistry and Centre of Advanced studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Ganga Ram Chaudhary
- Department of Chemistry and Centre of Advanced studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Santosh L. Gawali
- Homi Bhabha National Institute
- Training School Complex
- Mumbai – 400 094
- India
| | - P. A. Hassan
- Chemistry Division
- Bhabha Atomic Research Centre
- Mumbai – 400 085
- India
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30
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Self-assembled structures and excellent surface properties of a novel anionic phosphate diester surfactant derived from natural rosin acids. J Colloid Interface Sci 2017; 486:67-74. [DOI: 10.1016/j.jcis.2016.09.061] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Revised: 09/22/2016] [Accepted: 09/26/2016] [Indexed: 11/22/2022]
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31
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Garg P, Kaur G, Chaudhary GR. Transition metal based single chained surfactants: synthesis, aggregation behavior and enhanced photoluminescence properties of fluorescein. RSC Adv 2016. [DOI: 10.1039/c6ra21811c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Four different transition metal based surfactants were synthesized. The effect of presence of metal as a part of counter ion on the aggregation behaviour of metallosurfactants and on the photophysical properties of fluorescein was explored.
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Affiliation(s)
- Preeti Garg
- Department of Chemistry
- Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Gurpreet Kaur
- Department of Chemistry
- Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Ganga Ram Chaudhary
- Department of Chemistry
- Centre of Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
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