1
|
Kumar S, Aswal VK. Evolution of the structure and interaction in the surfactant-dependent heat-induced gelation of protein. SOFT MATTER 2024. [PMID: 38957095 DOI: 10.1039/d4sm00284a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
The addition of a surfactant and/or an increase in temperature disrupt the native structure of proteins, where high temperature further results in protein gelation. However, in a mixed protein-surfactant system, surfactant concentration and temperature have been observed to exhibit both mutually associative and counter-balancing effects towards heat-induced gelation of protein-surfactant dispersion. This study is conducted on globular bovine serum albumin (BSA) protein and cationic surfactant dodecyl trimethyl ammonium bromide (DTAB), which interact strongly owing to their oppositely charged nature. The findings reveal that the BSA-DTAB suspension undergoes gelation with increasing temperature but only at lower concentrations of DTAB, where the presence of the surfactant facilitates gelation (associative effect). Conversely, as the surfactant concentration increases beyond a critical value, temperature-driven gelation of the BSA-DTAB system is completely inhibited, despite surfactant-induced protein denaturation (counter-balancing effect). To conceptualize these results, we compared them with observations made in a system comprising protein and a similarly charged surfactant, sodium dodecyl sulfate (SDS). It has been further demonstrated that the anionic surfactant (SDS) can restrict protein gelation at much lower concentration compared to the cationic surfactant (DTAB). The evolution of the structure and interaction during gel formation/inhibition has been examined to understand the underlying mechanism guiding these sol-gel transitions. We present a comprehensive phase diagram, encompassing the solution/gel states of the protein-surfactant dispersion, with respect to the dispersion temperature, surfactant concentration, and ionic behavior (anionic or cationic) of the surfactants.
Collapse
Affiliation(s)
- Sugam Kumar
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
- Homi Bhabha National Institute, Mumbai 400 094, India
| | - Vinod K Aswal
- Solid State Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
- Homi Bhabha National Institute, Mumbai 400 094, India
| |
Collapse
|
2
|
Kaur B, Chaudhary GR, Kaur G. Cholesterol vs Ergosterol: Influence on the Dynamic and Structural Properties of the Cobalt-Based Metallosomal Bilayer Membrane. Mol Pharm 2024; 21:3643-3660. [PMID: 38885973 DOI: 10.1021/acs.molpharmaceut.4c00376] [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: 06/20/2024]
Abstract
Sterol derivatives are a crucial part of liposomes, as their concentration and nature can induce significant alternations in their characteristic features. For natural liposomal-based (phospholipid-based) studies, the bulk literature is already present depicting the role of the concentration or nature of different sterol derivatives in modulation of membrane properties. However, the studies aiming at evaluating the effect of sterol derivatives on synthetic liposomal assemblies are limited to cholesterol (Chl), and a comparative effect with other sterol derivatives, such as ergosterol (Erg), has never been studied. To fill this research gap, through this work, we intend to provide insights into the concentration-dependent effect of two sterol derivatives (Chl and Erg) on a synthetic liposomal assembly (i.e., metallosomes) prepared via thin film hydration route using a double-tailed metallosurfactant fabricated by modifying cetylpyridinium chloride with cobalt (Co) (i.e., Co:CPC II). The morphological evaluations with cryogenic-transmission electron microscopy (cryo-TEM), atomic force microscopy (AFM), and field emission-scanning electron microscopy (FE-SEM) indicated that metallosomes retained their spherical morphology irrespective of the nature and concentration of sterol derivatives. However, the size, ζ-potential, and lamellar width values were significantly modified with the incorporation of sterol derivatives in a concentration-dependent manner. In-depth studies affirmed that the extent of modulation of the bilayer in terms of hydrophobicity, fluidity, and rigidity was more severe with Chl than Erg. Such differences in the membrane properties lead to their contrasting behavior in the delivery of the broad-spectrum active compound "curcumin". From entrapment to in vitro behavior, the metallosomes demonstrated dissimilar behavior as even though Erg-modified metallosomes (at higher concentrations of Erg) exhibited low entrapment efficiency, they still could easily release >80% of the entrapped drug. In vitro studies conducted with Staphylococcus aureus bacterial cultures further revealed an interesting pattern of activity as the incorporation of Chl reduced the toxicity of the self-assembly, whereas their Erg-modified counterparts yielded slightly augmented toxicity toward these bacterial cells. Furthermore, Chl- and Erg-modified assemblies also exhibited contrasting behavior in their interaction studies with bacterial DNA.
Collapse
Affiliation(s)
- 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
| |
Collapse
|
3
|
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.
Collapse
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
| |
Collapse
|
4
|
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.
Collapse
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.
| |
Collapse
|
5
|
Probing plausible role of anionic surfactants in inducing structural alternations in HEWL with Fe-containing metallo-catanionic aggregates. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
6
|
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]
|
7
|
Two supramolecular architectures of Ni-based complexes for magnetic properties and the luminescent sensitive detection of Fe3+ and Cr6+. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.122949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
8
|
Adhikari J, Bhattarai A, Chaudhary NK. Synthesis, characterization, physicochemical studies, and antibacterial evaluation of surfactant-based Schiff base transition metal complexes. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02062-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
9
|
Sharma B, Jain A, Perez-Garcia L, Watts JA, Rawson FJ, Chaudhary GR, Kaur G. Metallocatanionic vesicles mediated enhanced singlet oxygen generation and photodynamic therapy of cancer cells. J Mater Chem B 2022; 10:2160-2170. [DOI: 10.1039/d2tb00011c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In clinics, photodynamic therapy (PDT) is established as a non-invasive therapeutic modality for certain types of cancers and skin diseases. However, due to poor water solubility, photobleaching, and dark toxicity...
Collapse
|
10
|
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.
Collapse
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.
| |
Collapse
|
11
|
Sharma B, Thakur V, Kaur G, Chaudhary GR. Efficient Photodynamic Therapy against Gram-Positive and Gram-Negative Bacteria Using Rose Bengal Encapsulated in Metallocatanionic Vesicles in the Presence of Visible Light. ACS APPLIED BIO MATERIALS 2020; 3:8515-8524. [PMID: 35019621 DOI: 10.1021/acsabm.0c00901] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Significant consumption of antibiotics has generated multidrug resistance in bacteria, which is a major menace to human beings. Antibacterial photodynamic therapy (aPDT) is a progressing technique for inhibition of bacterial infection with minimal side effects. Metals and delivering agents play a major role in aPDT efficiency. Herein, we report a formulation to enrich the antibacterial photodynamic therapy utilizing metallocatanionic vesicles (MCVs) against both Gram-positive and Gram-negative bacteria. These MCVs were synthesized by utilizing iron-based double-chain metallosurfactant [FeCPC(II)] as a cationic surfactant and AOT, a double-chain anionic surfactant. These synthesized MCV fractions were characterized by distinct techniques like DLS, zeta potential, FE-SEM, confocal microscopy, SAXS, and UV-Visible spectroscopy. Polyhedral-shaped MCVs with a size of 200 nm were formed, wherein the charge and size of the catanionic vesicle can be controlled by varying the mixing ratios. Both Gram-positive bacteria, i.e., methicillin-resistant Staphylococcus aureus (MRSA), and Gram-negative bacteria, i.e., Escherichia coli (E. coli), were used for aPDT using Rose Bengal (RB) as a photosensitizer (PS) encapsulated in MCVs in the presence of a 532 nm wavelength laser. The aPDT against bacterial cells was evaluated for both dark and light toxicities. Pure MCVs also exhibited good antibacterial properties; however, much enhancement was observed in the presence of RB encapsulated in MCVs under light, where eradication of bacteria (E. coli and MRSA) was achieved in 30 min. The observations demonstrated that it is the presence of metal that enhances the singlet oxygen quantum yield of RB and MCVs help in retarding self-quenching and enhanced solubilization of RB. The cationic surfactant-rich fraction shows strong adhesion toward bacteria via electrostatic interactions. The outcome of this research shows that these newly fabricated metal-based metallocatanionic vesicles were effective against both Gram-positive and Gram-negative bacteria using aPDT and must be exploited for clinical applications as well as an alternative for antibiotics in the future.
Collapse
Affiliation(s)
- Bunty Sharma
- Department of Chemistry and Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India
| | - Vipul Thakur
- 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
| |
Collapse
|
12
|
Kaur B, Kaur G, Chaudhary GR, Sharma VK, Srinivasan H, Mitra S, Sharma A, Gawali SL, Hassan P. An investigation of morphological, microscopic dynamics, fluidity, and physicochemical variations in Cu-decorated metallosomes with cholesterol. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
13
|
Di Natale C, De Benedictis I, De Benedictis A, Marasco D. Metal-Peptide Complexes as Promising Antibiotics to Fight Emerging Drug Resistance: New Perspectives in Tuberculosis. Antibiotics (Basel) 2020; 9:antibiotics9060337. [PMID: 32570779 PMCID: PMC7344629 DOI: 10.3390/antibiotics9060337] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 06/14/2020] [Accepted: 06/16/2020] [Indexed: 12/21/2022] Open
Abstract
In metal-peptide interactions, cations form stable complexes through bonds with coordinating groups as side chains of amino acids. These compounds, among other things, exert a wide variety of antimicrobial activities through structural changes of peptides upon metal binding and redox chemistry. They exhibit different mechanisms of action (MOA), including the modification of DNA/RNA, protein and cell wall synthesis, permeabilization and modulation of gradients of cellular membranes. Nowadays, the large increase in antibiotic resistance represents a crucial problem to limit progression at the pandemic level of the diseases that seemed nearly eradicated, such as tuberculosis (Tb). Mycobacterium tuberculosis (Mtb) is intrinsically resistant to many antibiotics due to chromosomal mutations which can lead to the onset of novel strains. Consequently, the maximum pharmaceutical effort should be focused on the development of new therapeutic agents and antimicrobial peptides can represent a valuable option as a copious source of potential bioactive compounds. The introduction of a metal center can improve chemical diversity and hence specificity and bioavailability while, in turn, the coordination to peptides of metal complexes can protect them and enhance their poor water solubility and air stability: the optimization of these parameters is strictly required for drug prioritization and to obtain potent inhibitors of Mtb infections with novel MOAs. Here, we present a panoramic review of the most recent findings in the field of metal complex-peptide conjugates and their delivery systems with the potential pharmaceutical application as novel antibiotics in Mtb infections.
Collapse
Affiliation(s)
- Concetta Di Natale
- Department of Pharmacy, University of Naples “Federico II”, 80134 Napoli NA, Italy; (C.D.N.); (I.D.B.); (A.D.B.)
- Center for Advanced Biomaterial for Health Care (CABHC), Istituto Italiano di Tecnologia, 80125 Naples, Italy
- Interdisciplinary Research Centre on Biomaterials (CRIB) and Dipartimento di Ingegneria Chimica, dei Materiali e della Produzione Industriale, University of Naples Federico II, Piazzale Tecchio 80, 80125 Naples, Italy
| | - Ilaria De Benedictis
- Department of Pharmacy, University of Naples “Federico II”, 80134 Napoli NA, Italy; (C.D.N.); (I.D.B.); (A.D.B.)
| | - Arianna De Benedictis
- Department of Pharmacy, University of Naples “Federico II”, 80134 Napoli NA, Italy; (C.D.N.); (I.D.B.); (A.D.B.)
| | - Daniela Marasco
- Department of Pharmacy, University of Naples “Federico II”, 80134 Napoli NA, Italy; (C.D.N.); (I.D.B.); (A.D.B.)
- Correspondence:
| |
Collapse
|
14
|
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]
|
15
|
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]
|
16
|
Kumar S, Nehra M, Kedia D, Dilbaghi N, Tankeshwar K, Kim KH. Nanotechnology-based biomaterials for orthopaedic applications: Recent advances and future prospects. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 106:110154. [DOI: 10.1016/j.msec.2019.110154] [Citation(s) in RCA: 86] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 08/04/2019] [Accepted: 08/31/2019] [Indexed: 12/13/2022]
|
17
|
Wagay TA, Ismail K, Askari H. Assessment of the aggregation and adsorption behavior of newly synthesized tetradecylpyridinium-based metallosurfactants and their interaction with bovine serum albumin. NEW J CHEM 2020. [DOI: 10.1039/d0nj02169e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Tetradecylpyridinium (TP) based metallosurfactants, TP2[MCl4] (M = Mn, Co, Ni, Cu, Zn): synthesis, aggregation behavior and interaction with bovine serum albumin.
Collapse
Affiliation(s)
- Tariq Ahmad Wagay
- Department of Chemistry
- North-Eastern Hill University
- NEHU Campus
- Shillong – 793022
- India
| | - K. Ismail
- Department of Chemistry
- North-Eastern Hill University
- NEHU Campus
- Shillong – 793022
- India
| | - Hassan Askari
- Department of Chemistry
- North-Eastern Hill University
- NEHU Campus
- Shillong – 793022
- India
| |
Collapse
|
18
|
Janek T, Rodrigues LR, Gudiña EJ, Czyżnikowska Ż. Metal-Biosurfactant Complexes Characterization: Binding, Self-Assembly and Interaction with Bovine Serum Albumin. Int J Mol Sci 2019; 20:ijms20122864. [PMID: 31212764 PMCID: PMC6627489 DOI: 10.3390/ijms20122864] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 06/04/2019] [Accepted: 06/10/2019] [Indexed: 12/21/2022] Open
Abstract
Studies on the specific and nonspecific interactions of biosurfactants with proteins are broadly relevant given the potential applications of biosurfactant/protein systems in pharmaceutics and cosmetics. The aim of this study was to evaluate the interactions of divalent counterions with the biomolecular anionic biosurfactant surfactin-C15 through molecular modeling, surface tension and dynamic light scattering (DLS), with a specific focus on its effects on biotherapeutic formulations. The conformational analysis based on a semi-empirical approach revealed that Cu2+ ions can be coordinated by three amide nitrogens belonging to the surfactin-C15 cycle and one oxygen atom of the aspartic acid from the side chain of the lipopeptide. Backbone oxygen atoms mainly involve Zn2+, Ca2+ and Mg2+. Subsequently, the interactions between metal-coordinated lipopeptide complexes and bovine serum albumin (BSA) were extensively investigated by fluorescence spectroscopy and molecular docking analysis. Fluorescence results showed that metal-lipopeptide complexes interact with BSA through a static quenching mechanism. Molecular docking results indicate that the metal-lipopeptide complexes are stabilized by hydrogen bonding and van der Waals forces. The biosurfactant-protein interaction properties herein described are of significance for metal-based drug discovery hypothesizing that the association of divalent metal ions with surfactin allows its interaction with bacteria, fungi and cancer cell membranes with effects that are similar to those of the cationic peptide antibiotics.
Collapse
Affiliation(s)
- Tomasz Janek
- Department of Biotechnology and Food Microbiology, Wrocław University of Environmental and Life Sciences, 51-630 Wrocław, Poland.
| | - Lígia R Rodrigues
- Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal.
| | - Eduardo J Gudiña
- Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal.
| | - Żaneta Czyżnikowska
- Department of Inorganic Chemistry, Faculty of Pharmacy, Wroclaw Medical University, 50-556 Wrocław, Poland.
| |
Collapse
|
19
|
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]
|
20
|
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.
Collapse
Affiliation(s)
- Gurpreet Kaur
- Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Chandigarh 160 014, India.
| | | | | | | | | | | | | | | |
Collapse
|