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Adul-Rasool AA, Athair DM, Zaidan HK, Rheima AM, Al-Sharify ZT, Mohammed SH, Kianfar E. 0,1,2,3D nanostructures, types of bulk nanostructured materials, and drug nanocrystals: An overview. Cancer Treat Res Commun 2024; 40:100834. [PMID: 39013325 DOI: 10.1016/j.ctarc.2024.100834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 07/04/2024] [Accepted: 07/08/2024] [Indexed: 07/18/2024]
Abstract
Functional materials are required to meet the needs of society, such as environmental protection, energy storage and conversion, integrated product production, biological and medical processing. bulk nanostructured materials are a research concept that combines nanotechnology with other research fields such as supramolecular chemistry, materials science, and life science to develop logically functional materials from nanodevices. In this review article, nanostructures are synthetized by different methods based on the types and nature of the nanomaterials. In a broad sense "top-down" and "bottom-up" are the two foremost methods to synthesize nanomaterials. In top-down method bulk materials have been reduced to nanomaterials, and in case of bottom-up method, the nanomaterials are synthesized from elementary level. The different methods which are being used to synthesize nanomaterials are chemical vapor deposition method, thermal decomposition, hydrothermal synthesis, solvothermal method, pulsed laser ablation, templating method, combustion method, microwave synthesis, gas phase method, and conventional Sol-Gel method. We also briefly discuss the various physical and chemical methods for producing nanomaterials. We then discuss the applications of functional materials in many areas such as energy storage, supercapacitors, sensors, wastewater treatment, and other biological applications such as drug delivery and drug nanocrystals. Finally, future challenges in materials nanoarchitecture and concepts for further development of functional nanomaterials are briefly discussed.
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Affiliation(s)
| | - Duaa Mohammed Athair
- Mustansiriyah University, Office of the Scientific Assistant, Technology Incubator Division, Baghdad, Iraq
| | | | - Ahmed Mahdi Rheima
- Mustansiriyah University, College of Science, Chemistry Department, Baghdad, Iraq
| | - Zainab T Al-Sharify
- Al Hikma University College, Baghdad, Iraq; School of Chemical Engineering, University of Birmingham, Edgbaston B15 2TT, Birmingham, United Kingdom
| | | | - Ehsan Kianfar
- Young Researchers and Elite Club, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran.
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2
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Kaymaz SV, Nobar HM, Sarıgül H, Soylukan C, Akyüz L, Yüce M. Nanomaterial surface modification toolkit: Principles, components, recipes, and applications. Adv Colloid Interface Sci 2023; 322:103035. [PMID: 37931382 DOI: 10.1016/j.cis.2023.103035] [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] [Received: 07/23/2023] [Revised: 09/11/2023] [Accepted: 10/26/2023] [Indexed: 11/08/2023]
Abstract
Surface-functionalized nanostructures are at the forefront of biotechnology, providing new opportunities for biosensors, drug delivery, therapy, and bioimaging applications. The modification of nanostructures significantly impacts the performance and success of various applications by enabling selective and precise targeting. This review elucidates widely practiced surface modification strategies, including click chemistry, cross-coupling, silanization, aldehyde linkers, active ester chemistry, maleimide chemistry, epoxy linkers, and other protein and DNA-based methodologies. We also delve into the application-focused landscape of the nano-bio interface, emphasizing four key domains: therapeutics, biosensing, environmental monitoring, and point-of-care technologies, by highlighting prominent studies. The insights presented herein pave the way for further innovations at the intersection of nanotechnology and biotechnology, providing a useful handbook for beginners and professionals. The review draws on various sources, including the latest research articles (2018-2023), to provide a comprehensive overview of the field.
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Affiliation(s)
- Sümeyra Vural Kaymaz
- Faculty of Engineering and Natural Sciences, Sabanci University, Istanbul 34956, Turkey; SUNUM Nanotechnology Research and Application Centre, Sabanci University, Istanbul 34956, Turkey
| | | | - Hasan Sarıgül
- SUNUM Nanotechnology Research and Application Centre, Sabanci University, Istanbul 34956, Turkey
| | - Caner Soylukan
- SUNUM Nanotechnology Research and Application Centre, Sabanci University, Istanbul 34956, Turkey
| | - Lalehan Akyüz
- Department of Molecular Biology and Genetics, Aksaray University, 68100 Aksaray, Turkey
| | - Meral Yüce
- SUNUM Nanotechnology Research and Application Centre, Sabanci University, Istanbul 34956, Turkey.
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3
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Phan LX, Owji AP, Yang T, Crain J, Sansom MSP, Tucker SJ. Electronic Polarizability Tunes the Function of the Human Bestrophin 1 Cl - Channel. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.14.567055. [PMID: 38014257 PMCID: PMC10680768 DOI: 10.1101/2023.11.14.567055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2023]
Abstract
Mechanisms of anion permeation within ion channels and nanopores remain poorly understood. Recent cryo-electron microscopy structures of the human bestrophin 1 chloride channel (hBest1) provide an opportunity to evaluate ion interactions predicted by molecular dynamics (MD) simulations against experimental observations. We implement the fully polarizable forcefield AMOEBA in MD simulations of open and partially-open states of the hBest1. The AMOEBA forcefield models multipole moments up to the quadrupole; therefore, it captures induced dipole and anion- π interactions. By including polarization we demonstrate the key role that aromatic residues play in ion permeation and the functional advantages of pore asymmetry within the highly conserved hydrophobic neck of the pore. We establish that these only arise when electronic polarization is included in the molecular models. We also show that Cl - permeation in this region can be achieved through hydrophobic solvation concomitant with partial ion dehydration, which is compensated for by the formation of contacts with the edge of the phenylalanine ring. Furthermore, we demonstrate how polarizable simulations can help determine the identity of ion-like densities within high-resolution cryo-EM structures. Crucially, neglecting polarization in simulation of these systems results in the localization of Cl - at positions that do not correspond with their experimentally resolved location. Overall, our results demonstrate the importance of including electronic polarization in realistic and physically accurate models of biological systems. Statement of Significance Ion channels are nanoscale protein pores that enable the selective passage of charged ions across cell membranes. Understanding the underlying mechanisms for selective anion permeation through such pores remains a challenge. To simulate their behavior efficiently in silico , fixed charge models are typically employed. However, this approach is insufficient for the study of anions. Here, we use simulations with explicit treatment of electrostatics to investigate the interactions of chloride ions in the human bestrophin 1 channel. We find that electronic polarization tunes the state of the channel and affects the interactions of chloride ions thereby revealing a mechanism for permeation. Furthermore, these simulations can be used to resolve experimental ambiguity in ion-like densities from cryo-EM structures.
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4
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Ahumada JC, Ahumada G, Sobolev Y, Kim M, Grzybowski BA. On-nanoparticle monolayers as a solute-specific, solvent-like phase. NANOSCALE 2023; 15:6379-6386. [PMID: 36919410 DOI: 10.1039/d2nr06341g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
In addition to modifying surface properties, self-assembled monolayers, SAMs, on nanoparticles can selectively incorporate small molecules from the surrounding solution. This selectivity has been used in the design of substrate-specific catalytic systems but its degree has not been quantified. This work uses catalytic centers embedded in on-nanoparticle hydrophobic SAMs to monitor and quantify the partitioning of molecules between the bulk solvent and these monolayers. A combination of experiments and theory allows us to relate the logarithm of the incorporation-into-SAM constant to the "bulk" log P values, characterizing the incoming substrates. These results are in line with classic, semi-empirical linear free energy relationships between partitioning solvent systems; in this way, they substantiate the view of nanoscopic on-particle SAMs acting akin to a bulk solvent phase.
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Affiliation(s)
- Juan C Ahumada
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea.
| | - Guillermo Ahumada
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea.
| | - Yaroslav Sobolev
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea.
| | - Minju Kim
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea.
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Bartosz A Grzybowski
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea.
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
- Institute of Organic Chemistry, Polish Academy of Sciences, Warsaw, Poland
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5
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Feng L, Liu J, Abu-Hamdeh NH, Bezzina S, Eshaghi Malekshah R. Molecular dynamics and quantum simulation of different cationic dyes removal from contaminated water using UiO-66 (Zr)-(COOH)2 metal–organic framework. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118085] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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6
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Kopf AH, Lijding O, Elenbaas BOW, Koorengevel MC, Dobruchowska JM, van Walree CA, Killian JA. Synthesis and Evaluation of a Library of Alternating Amphipathic Copolymers to Solubilize and Study Membrane Proteins. Biomacromolecules 2022; 23:743-759. [PMID: 34994549 PMCID: PMC8924871 DOI: 10.1021/acs.biomac.1c01166] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
![]()
Amphipathic copolymers
such as poly(styrene-maleic acid) (SMA)
are promising tools for the facile extraction of membrane proteins
(MPs) into native nanodiscs. Here, we designed and synthesized a library
of well-defined alternating copolymers of SMA analogues in order to
elucidate polymer properties that are important for MP solubilization
and stability. MP extraction efficiency was determined using KcsA
from E. coli membranes, and general solubilization
efficiency was investigated via turbidimetry experiments on membranes
of E. coli, yeast mitochondria, and synthetic
lipids. Remarkably, halogenation of SMA copolymers dramatically improved
solubilization efficiency in all systems, while substituents on the
copolymer backbone improved resistance to Ca2+. Relevant
polymer properties were found to include hydrophobic balance, size
and positioning of substituents, rigidity, and electronic effects.
The library thus contributes to the rational design of copolymers
for the study of MPs.
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Affiliation(s)
- Adrian H Kopf
- Membrane Biochemistry and Biophysics, Bijvoet Center for Biomolecular Research, Institute of Biomembranes, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Odette Lijding
- Membrane Biochemistry and Biophysics, Bijvoet Center for Biomolecular Research, Institute of Biomembranes, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Barend O W Elenbaas
- Membrane Biochemistry and Biophysics, Bijvoet Center for Biomolecular Research, Institute of Biomembranes, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Martijn C Koorengevel
- Membrane Biochemistry and Biophysics, Bijvoet Center for Biomolecular Research, Institute of Biomembranes, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Justyna M Dobruchowska
- Department of Chemical Biology and Drug Discovery, Utrecht Institute for Pharmaceutical Sciences, and Bijvoet Center for Biomolecular Research, Utrecht University, 3584 CH Utrecht, The Netherlands
| | - Cornelis A van Walree
- Membrane Biochemistry and Biophysics, Bijvoet Center for Biomolecular Research, Institute of Biomembranes, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - J Antoinette Killian
- Membrane Biochemistry and Biophysics, Bijvoet Center for Biomolecular Research, Institute of Biomembranes, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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7
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Hydrodynamic alignment and self-assembly of cationic lignin polymers made of architecturally altered monomers. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Peressotti S, Koehl GE, Goding JA, Green RA. Self-Assembling Hydrogel Structures for Neural Tissue Repair. ACS Biomater Sci Eng 2021; 7:4136-4163. [PMID: 33780230 PMCID: PMC8441975 DOI: 10.1021/acsbiomaterials.1c00030] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 03/10/2021] [Indexed: 12/12/2022]
Abstract
Hydrogel materials have been employed as biological scaffolds for tissue regeneration across a wide range of applications. Their versatility and biomimetic properties make them an optimal choice for treating the complex and delicate milieu of neural tissue damage. Aside from finely tailored hydrogel properties, which aim to mimic healthy physiological tissue, a minimally invasive delivery method is essential to prevent off-target and surgery-related complications. The specific class of injectable hydrogels termed self-assembling peptides (SAPs), provide an ideal combination of in situ polymerization combined with versatility for biofunctionlization, tunable physicochemical properties, and high cytocompatibility. This review identifies design criteria for neural scaffolds based upon key cellular interactions with the neural extracellular matrix (ECM), with emphasis on aspects that are reproducible in a biomaterial environment. Examples of the most recent SAPs and modification methods are presented, with a focus on biological, mechanical, and topographical cues. Furthermore, SAP electrical properties and methods to provide appropriate electrical and electrochemical cues are widely discussed, in light of the endogenous electrical activity of neural tissue as well as the clinical effectiveness of stimulation treatments. Recent applications of SAP materials in neural repair and electrical stimulation therapies are highlighted, identifying research gaps in the field of hydrogels for neural regeneration.
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Affiliation(s)
- Sofia Peressotti
- Department
of Bioengineering and Centre for Neurotechnology, Imperial College London, London SW72AS, United Kingdom
| | - Gillian E. Koehl
- Department
of Bioengineering and Centre for Neurotechnology, Imperial College London, London SW72AS, United Kingdom
| | - Josef A. Goding
- Department
of Bioengineering and Centre for Neurotechnology, Imperial College London, London SW72AS, United Kingdom
| | - Rylie A. Green
- Department
of Bioengineering and Centre for Neurotechnology, Imperial College London, London SW72AS, United Kingdom
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9
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Ura D, Knapczyk-Korczak J, Szewczyk PK, Sroczyk EA, Busolo T, Marzec MM, Bernasik A, Kar-Narayan S, Stachewicz U. Surface Potential Driven Water Harvesting from Fog. ACS NANO 2021; 15:8848-8859. [PMID: 33900735 PMCID: PMC8158858 DOI: 10.1021/acsnano.1c01437] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 04/02/2021] [Indexed: 05/08/2023]
Abstract
Access to clean water is a global challenge, and fog collectors are a promising solution. Polycarbonate (PC) fibers have been used in fog collectors but with limited efficiency. In this study, we show that controlling voltage polarity and humidity during the electrospinning of PC fibers improves their surface properties for water collection capability. We experimentally measured the effect of both the surface morphology and the chemistry of PC fiber on their surface potential and mechanical properties in relation to the water collection efficiency from fog. PC fibers produced at high humidity and with negative voltage polarity show a superior water collection rate combined with the highest tensile strength. We proved that electric potential on surface and morphology are crucial, as often designed by nature, for enhancing the water collection capabilities via the single-step production of fibers without any postprocessing needs.
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Affiliation(s)
- Daniel
P. Ura
- Faculty
of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland
| | - Joanna Knapczyk-Korczak
- Faculty
of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland
| | - Piotr K. Szewczyk
- Faculty
of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland
| | - Ewa A. Sroczyk
- Faculty
of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland
| | - Tommaso Busolo
- Department
of Materials Science and Metallurgy, University
of Cambridge, CB3 0FS Cambridge, United Kingdom
| | - Mateusz M. Marzec
- Academic
Centre for Materials and Nanotechnology, AGH University of Science and Technology, 30-059 Kraków, Poland
| | - Andrzej Bernasik
- Academic
Centre for Materials and Nanotechnology, AGH University of Science and Technology, 30-059 Kraków, Poland
- Faculty
of Physics and Applied Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland
| | - Sohini Kar-Narayan
- Department
of Materials Science and Metallurgy, University
of Cambridge, CB3 0FS Cambridge, United Kingdom
| | - Urszula Stachewicz
- Faculty
of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, 30-059 Kraków, Poland
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10
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Hazra R, Roy D. Distinctive Weak Interactions Underlie Diverse Nucleation and Small-Angle Scattering Behavior of Aqueous Cholesterol, Cholesteryl Hemisuccinate, and Glycocholic Acid. J Phys Chem B 2021; 125:612-624. [PMID: 33417461 DOI: 10.1021/acs.jpcb.0c08931] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Increased total cholesterol is a major cause of serious heart ailments leading to an estimated 3 million deaths annually throughout the world. Understanding the flocculation behavior of small lipids is thus quintessential. Nucleation, small-angle scattering, and dynamical behavior of lipids and analogues like cholesterol (CHL), cholesteryl hemisuccinate (CHM), and glycocholic acid (GHL) are studied in water by molecular dynamics simulation. The study shows a distinct aggregation behavior of these physiologically relevant molecules owing to a systematic gradation in their non-bonding interactions with solvents and near neighbors. Spontaneous self-assemblies formed during simulation are observed to have different stability, aggregation patterns, and dynamics depending crucially on the nature of the hydrophobic/hydrophilic tails. With increasing hydrophilicity, in the order CHL < CHM < GHL, the aggregates become breakable and less compact, often interposed by water molecules in the interstitial spaces between the lipids. Small-angle scattering data obtained from our simulations provide insights toward the structural integrity and shape of the aggregates formed. Unique features are noticed while following the time evolution of the packing of the nucleated assemblies from the solution phase in terms of local density and molecular orientation. As hydrophilicity increases from CHL to GHL, the packing becomes progressively erratic with diverse angles between the molecular vectors. Surface electrostatic potential calculation indicates drastic increase in positive surface charge from CHL to CHM, which has strong implication in water and ion transport through membranes. These observations can be further correlated to comprehend the flocculation of cholesterol and bile acids in the human body.
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Affiliation(s)
- Rituparna Hazra
- Department of Chemistry, Birla Institute of Technology and Science - Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad, Telangana 500078, India
| | - Durba Roy
- Department of Chemistry, Birla Institute of Technology and Science - Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Hyderabad, Telangana 500078, India
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11
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González Chávez F, Beltrán HI. Tuning dimensionality between 2D and 1D MOFs by lanthanide contraction and ligand-to-metal ratio. NEW J CHEM 2021. [DOI: 10.1039/d0nj04055j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
2D/1D dimensionality tuning in LnMOFs is related to both (i) ligand-to-metal ratio and (ii) lanthanide contraction, this is only possible with Er/Tm, lighter lanthanides e.g. Pr only produced 2D MOFs, despite different ligand-to-metal ratios were used.
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12
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Pignataro MF, Herrera MG, Dodero VI. Evaluation of Peptide/Protein Self-Assembly and Aggregation by Spectroscopic Methods. Molecules 2020; 25:E4854. [PMID: 33096797 PMCID: PMC7587993 DOI: 10.3390/molecules25204854] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/17/2020] [Accepted: 10/19/2020] [Indexed: 01/08/2023] Open
Abstract
The self-assembly of proteins is an essential process for a variety of cellular functions including cell respiration, mobility and division. On the other hand, protein or peptide misfolding and aggregation is related to the development of Parkinson's disease and Alzheimer's disease, among other aggregopathies. As a consequence, significant research efforts are directed towards the understanding of this process. In this review, we are focused on the use of UV-Visible Absorption Spectroscopy, Fluorescence Spectroscopy and Circular Dichroism to evaluate the self-organization of proteins and peptides in solution. These spectroscopic techniques are commonly available in most chemistry and biochemistry research laboratories, and together they are a powerful approach for initial as well as routine evaluation of protein and peptide self-assembly and aggregation under different environmental stimulus. Furthermore, these spectroscopic techniques are even suitable for studying complex systems like those in the food industry or pharmaceutical formulations, providing an overall idea of the folding, self-assembly, and aggregation processes, which is challenging to obtain with high-resolution methods. Here, we compiled and discussed selected examples, together with our results and those that helped us better to understand the process of protein and peptide aggregation. We put particular emphasis on the basic description of the methods as well as on the experimental considerations needed to obtain meaningful information, to help those who are just getting into this exciting area of research. Moreover, this review is particularly useful to those out of the field who would like to improve reproducibility in their cellular and biomedical experiments, especially while working with peptide and protein systems as an external stimulus. Our final aim is to show the power of these low-resolution techniques to improve our understanding of the self-assembly of peptides and proteins and translate this fundamental knowledge in biomedical research or food applications.
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Affiliation(s)
- María Florencia Pignataro
- Department of Physiology and Molecular and Cellular Biology, Institute of Biosciences, Biotechnology and Translational Biology (iB3), Faculty of Exact and Natural Sciences, University of Buenos Aires, Buenos Aires C1428EG, Argentina;
- Institute of Biological Chemistry and Physical Chemistry, Dr. Alejandro Paladini, University of Buenos Aires-CONICET, Buenos Aires C1113AAD, Argentina
| | - María Georgina Herrera
- Department of Physiology and Molecular and Cellular Biology, Institute of Biosciences, Biotechnology and Translational Biology (iB3), Faculty of Exact and Natural Sciences, University of Buenos Aires, Buenos Aires C1428EG, Argentina;
- Institute of Biological Chemistry and Physical Chemistry, Dr. Alejandro Paladini, University of Buenos Aires-CONICET, Buenos Aires C1113AAD, Argentina
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, 33615 Bielefeld, Germany
| | - Verónica Isabel Dodero
- Organic and Bioorganic Chemistry, Department of Chemistry, Bielefeld University, 33615 Bielefeld, Germany
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13
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Prasad Dewangan R, Kumari S, Kumar Mahto A, Jain A, Pasha S. Self assembly and hydrogelation of N-terminal modified tetrapeptide for sustained release and synergistic action of antibacterial drugs against methicillin resistant S. aureus. Bioorg Chem 2020; 102:104052. [PMID: 32659487 DOI: 10.1016/j.bioorg.2020.104052] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 05/11/2020] [Accepted: 06/26/2020] [Indexed: 01/01/2023]
Abstract
Self assembly is a ubiquitous process of complex bio-molecules to perform various biological functions. This bottom-up approach applies in engineering of various nanostructures in different technological and biomedical applications. Here we report design and synthesis of phenolic acid conjugated tetra peptides which self assembled in uniform nanofibrils upon dissolution in aqueous solutions at physiological pH and formed stiff and transparent hydrogel. Gel inversion assay, HR-TEM, FT-IR, CD spectroscopy and rheometric analysis characterized the developed hydrogel (HG-2). This gel exhibits characteristics of thixotropy and injectability. Structure-gelation relationship studies of peptide revealed the importance of π-π interactions in self assembly and hydrogelation. Further, this hydrogel used for entrapment and sustained release of antibiotics, rifampicin and ciprofloxacin at physiological pH and temperature for 5 days. The hydrogelator peptide has shown moderate antibacterial activity alone, whereas in combination with rifampicin and ciprofloxacin showed a remarkable synergistic antibacterial activity against clinically relevant multidrug resistant methicillin resistant S. aureus (MRSA). Interestingly, this hydrogel neither cause significant damage to hRBCsnor to human keratinocyte up to hydrogelation concentrations tested by haemolytic and MTT assay. These characteristics of present peptide hold future promising soft materials for treatment of infections and drug delivery applications.
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Affiliation(s)
- Rikeshwer Prasad Dewangan
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard (Deemed to be University), New Delhi 110062, India.
| | - Shalini Kumari
- CSIR- Institute of Genomics and Integrative Biology (IGIB), Mall Road, Delhi 110007, India
| | - Aman Kumar Mahto
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research (SPER), Jamia Hamdard (Deemed to be University), New Delhi 110062, India
| | - Aditi Jain
- CSIR- Institute of Genomics and Integrative Biology (IGIB), Mall Road, Delhi 110007, India
| | - Santosh Pasha
- CSIR- Institute of Genomics and Integrative Biology (IGIB), Mall Road, Delhi 110007, India
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14
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Hulushe ST, Manyeruke MH, Louzada M, Rigin S, Hosten EC, Watkins GM. Exploring intermolecular contacts in multi-substituted benzaldehyde derivatives: X-ray, Hirshfeld surface and lattice energy analyses. RSC Adv 2020; 10:16861-16874. [PMID: 35496923 PMCID: PMC9053169 DOI: 10.1039/c9ra10752e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 04/01/2020] [Indexed: 11/21/2022] Open
Abstract
Crystal structures of six benzaldehyde derivatives (1-6) have been determined and their supramolecular networks were established by an X-ray crystallographic study. The study has shown that the compounds are linked by various intermolecular interactions such as weak C-H⋯O hydrogen bonding, and C-H⋯π, π-π and halogen bonding interactions which consolidate and strengthen the formation of these molecular assemblies. The carbonyl group generates diverse synthons in 1-6via intermolecular C-H⋯O hydrogen bonds. An interplay of C-H⋯O hydrogen bonds, and C-H⋯π and π-π stacking interactions facilitates the formation of multi-dimensional supramolecular networks. Crystal packings in 4 and 5 are further generated by type I halogen⋯halogen bonding interactions. The differences in crystal packing are represented by variation of substitution positions in the compounds. Structure 3 is isomorphous with 4 but there are subtle differences in their crystal packing. The nature of intermolecular contacts in the structures has been studied through the Hirshfeld surfaces and two-dimensional fingerprint plots which serve as a comparison in constructing different supramolecular networks. The intermolecular interaction energies are quantified utilizing theorectical calculations for the title compounds and various analogous structures retrieved from the Cambridge Structural Database (CSD). Also intermolecular interactions for the molecular pairs are exctrated from respective crystal structures. Essentially, there are some invariant and variable intermolecular contacts realized between different groups in all six structures. The ab initio DFT total lattice energy (E Tot) calculations showed a direct correlation with thermal strengths of the title compounds.
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Affiliation(s)
- Siya T Hulushe
- Department of Chemistry, Rhodes University P.O. Box 94 Grahamstown 6139 South Africa
| | - Meloddy H Manyeruke
- Department of Chemistry, Rhodes University P.O. Box 94 Grahamstown 6139 South Africa
| | - Marcel Louzada
- Department of Chemistry, Rhodes University P.O. Box 94 Grahamstown 6139 South Africa
| | - Sergei Rigin
- Department of Chemistry, New Mexico Highlands University Las Vegas New Mexico 87701 USA
| | - Eric C Hosten
- Department of Chemistry, Nelson Mandela University P.O. Box 77000 Port Elizabeth 6031 South Africa
| | - Gareth M Watkins
- Department of Chemistry, Rhodes University P.O. Box 94 Grahamstown 6139 South Africa
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15
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Wongpinyochit T, Vassileiou AD, Gupta S, Mushrif SH, Johnston BF, Seib FP. Unraveling the Impact of High-Order Silk Structures on Molecular Drug Binding and Release Behaviors. J Phys Chem Lett 2019; 10:4278-4284. [PMID: 31318218 DOI: 10.1021/acs.jpclett.9b01591] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Silk continues to amaze: over the past decade, new research threads have emerged that include the use of silk fibroin for advanced pharmaceutics, including its suitability for drug delivery. Despite this ongoing interest, the details of silk fibroin structures and their subsequent drug interactions at the molecular level remain elusive, primarily because of the difficulties encountered in modeling the silk fibroin molecule. Here, we generated an atomistic silk model containing amorphous and crystalline regions. We then exploited advanced well-tempered metadynamics simulations to generate molecular conformations that we subsequently exposed to classical molecular dynamics simulations to monitor both drug binding and release. Overall, this study demonstrated the importance of the silk fibroin primary sequence, electrostatic interactions, hydrogen bonding, and higher-order conformation in the processes of drug binding and release.
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Affiliation(s)
- Thidarat Wongpinyochit
- Strathclyde Institute of Pharmacy and Biomedical Sciences , University of Strathclyde , 161 Cathedral Street , Glasgow G4 0RE , United Kingdom
| | - Antony D Vassileiou
- Strathclyde Institute of Pharmacy and Biomedical Sciences , University of Strathclyde , 161 Cathedral Street , Glasgow G4 0RE , United Kingdom
| | - Sukriti Gupta
- Energy Research Institute @ NTU, Interdisciplinary Graduate School , Nanyang Technological University , 50 Nanyang Drive , Singapore 637553
- School of Chemical and Biomedical Engineering , Nanyang Technological University , 62 Nanyang Drive , Singapore 637459
| | - Samir H Mushrif
- School of Chemical and Biomedical Engineering , Nanyang Technological University , 62 Nanyang Drive , Singapore 637459
- Department of Chemical and Materials Engineering , University of Alberta , 9211-116 Street Northwest , Edmonton , Alberta T6G 1H9 , Canada
| | - Blair F Johnston
- Strathclyde Institute of Pharmacy and Biomedical Sciences , University of Strathclyde , 161 Cathedral Street , Glasgow G4 0RE , United Kingdom
- National Physical Laboratory , Teddington , Middlesex TW11 0LW , United Kingdom
| | - F Philipp Seib
- Strathclyde Institute of Pharmacy and Biomedical Sciences , University of Strathclyde , 161 Cathedral Street , Glasgow G4 0RE , United Kingdom
- Leibniz Institute of Polymer Research Dresden , Max Bergmann Center of Biomaterials Dresden , Hohe Strasse 6 , 01069 Dresden , Germany
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16
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Invertion and methylation of pyrrole ring in tetrasulfophenylporphyrin: basicity, aggregation properties, chirality. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2018.12.105] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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17
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Mishra PK, Ekielski A. The Self-Assembly of Lignin and Its Application in Nanoparticle Synthesis: A Short Review. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E243. [PMID: 30754724 PMCID: PMC6410071 DOI: 10.3390/nano9020243] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/03/2019] [Accepted: 02/04/2019] [Indexed: 01/16/2023]
Abstract
Lignin serves as a significant contributor to the natural stock of non-fossilized carbon, second only to cellulose in the biosphere. In this review article, we focus on the self-assembly properties of lignin and their contribution to its effective utilization and valorization. Traditionally, investigations on self-assembly properties of lignin have aimed at understanding the lignification process of the cell wall and using it for efficient delignification for commercial purposes. In recent years (mainly the last three years), an increased number of attempts and reports of technical-lignin nanostructure synthesis with controlled particle size and morphology have been published. This has renewed the interests in the self-assembly properties of technical lignins and their possible applications. Based on the sources and processing methods of lignin, there are significant differences between its structure and properties, which is the primary obstacle in the generalized understanding of the lignin structure and the lignification process occurring within cell walls. The reported studies are also specific to source and processing methods. This work has been divided into two parts. In the first part, the aggregation propensity of lignin based on type, source and extraction method, temperature, and pH of solution is discussed. This is followed by a critical overview of non-covalent interactions and their contribution to the self-associative properties of lignin. The role of self-assembly towards the understanding of xylogenesis and nanoparticle synthesis is also discussed. A particular emphasis is placed on the interaction and forces involved that are used to explain the self-association of lignin.
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Affiliation(s)
- Pawan Kumar Mishra
- Department of Wood Processing Technology, Mendel University in Brno, 61300 Brno, Czech Republic.
| | - Adam Ekielski
- Department of Production Management and Engineering, Warsaw University Of Life Sciences, 02-787 Warsaw, Poland.
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18
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Xu X, Yang G, Xue X, Lu H, Wu H, Huang Y, Jing D, Xiao W, Tian J, Yao W, Pan CX, Lin TY, Li Y. A polymer-free, biomimicry drug self-delivery system fabricated via a synergistic combination of bottom-up and top-down approaches. J Mater Chem B 2018; 6:7842-7853. [PMID: 31380107 PMCID: PMC6676892 DOI: 10.1039/c8tb01464g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Compared to conventional carrier-assistant drug delivery systems (DDSs), drug self-delivery systems (DSDSs) have advantages of unprecedented drug loading capacity, minimized carrier-related toxicity and ease of preparation. However, the colloidal stability and blood circulation time of DSDSs still need to be improved. Here we report on the development of a novel biomimicry drug self-delivery system by the integration of a top-down cell membrane complexing technique into our self-delivery multifunctional nano-platform made from bottom-up approach that contains 100% active pharmaceutical ingredients (API) of Pheophorbide A and Irinotecan conjugates (named PI). Compared to conventional cell membrane coated nanoparticles with polymer framework as core and relatively low drug loading, this system consisting of red blood cell membrane vesicles complexed PI (RBC-PI) is polymer-free with up to 50% API loading. RBC-PI exhibited 10 times higher area under curve in pharmacokinetic study and much lower macrophage uptake compared with the parent PI nanoparticles. RBC-PI retained the excellent chemophototherapeutic effects of the PI nanoparticles, but possessed superior anti-cancer efficacy with prolonged blood circulation, improved tumor delivery, and enhanced photothermal effects in animal models. This system represents a novel example of using cell membrane complexing technique for effective surface modification of DSDSs. This is also an innovative study to form a polymer-free cell membrane nanoparticle complexing with positive surface charged materials. This biomimicry DSDS takes advantages of the best features from both systems to make up for each other's shortcomings and posed all the critical features for an ideal drug delivery system.
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Affiliation(s)
- Xiaobao Xu
- College of Biomedical Engineering & Instrument Science,
Zhejiang University, Hangzhou 310027, China
- Department of Internal Medicine, University of California
Davis, Sacramento, CA 95817, USA
- Department of Biochemistry and Molecular Medicine, UC Davis
Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817,
USA
| | - Gaomai Yang
- Department of Biochemistry and Molecular Medicine, UC Davis
Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817,
USA
| | - Xiangdong Xue
- Department of Biochemistry and Molecular Medicine, UC Davis
Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817,
USA
| | - Hongwei Lu
- Department of Biochemistry and Molecular Medicine, UC Davis
Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817,
USA
| | - Hao Wu
- Department of Biochemistry and Molecular Medicine, UC Davis
Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817,
USA
| | - Yee Huang
- Institute of Animal Husbandry and Veterinary Science,
Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, China
| | - Di Jing
- Department of Biochemistry and Molecular Medicine, UC Davis
Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817,
USA
| | - Wenwu Xiao
- Department of Biochemistry and Molecular Medicine, UC Davis
Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817,
USA
| | - Jingkui Tian
- College of Biomedical Engineering & Instrument Science,
Zhejiang University, Hangzhou 310027, China
| | - Wei Yao
- Department of Internal Medicine, University of California
Davis, Sacramento, CA 95817, USA
| | - Chong-xian Pan
- Department of Internal Medicine, University of California
Davis, Sacramento, CA 95817, USA
| | - Tzu-yin Lin
- Department of Internal Medicine, University of California
Davis, Sacramento, CA 95817, USA
| | - Yuanpei Li
- Department of Biochemistry and Molecular Medicine, UC Davis
Comprehensive Cancer Center, University of California Davis, Sacramento, CA 95817,
USA
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Pannipara M, Al-Sehemi AG, Irfan A, Assiri M, Kalam A, Al-Ammari YS. AIE active multianalyte fluorescent probe for the detection of Cu 2+, Ni 2+ and Hg 2+ ions. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 201:54-60. [PMID: 29730554 DOI: 10.1016/j.saa.2018.04.052] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 04/18/2018] [Accepted: 04/26/2018] [Indexed: 06/08/2023]
Abstract
A novel pyrazolyl chromene derivative (Probe 1) displaying aggregation induced emission (AIE) properties that capable of sensing of multiple metal ions has been designed and synthesized. The multi analyte probe exhibits selective sensing for Cu2+ and Ni2+ ions via fluorescence turn-off mechanism and ratiometric selectivity for Hg2+ ions in aqueous media. The extent of binding of the probe with sensitive metal ions has been demonstrated. The experimental results were further investigated by computational means by optimizing the ground state geometries of Probe 1 and its various metal complexes for Probe 1-Ni, Probe 1-Hg and Probe 1-Cu using density functional theory (DFT) at B3LYP/6-31+g(d,p) (LANL2DZ) level. On the basis of binding energies, the stability of metal complexes has been studied. In Probe 1-Ni and Probe 1-Cu complexes, charge transfer has been observed from Probe 1 to metal ions revealing ligand to metal charge transfer (LMCT) while in Probe1-Hg complex LMCT as well as intra-molecular charge tranfer (ICT) within Probe 1.
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Affiliation(s)
- Mehboobali Pannipara
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.
| | - Abdullah G Al-Sehemi
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Ahmad Irfan
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia.
| | - Mohammed Assiri
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Abul Kalam
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia; Research Center for Advanced Materials Science (RCAMS), King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Yahya S Al-Ammari
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
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20
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Avila-Salas F, Marican A, Villaseñor J, Arenas-Salinas M, Argandoña Y, Caballero J, Durán-Lara EF. In-Silico Design, Synthesis and Evaluation of a Nanostructured Hydrogel as a Dimethoate Removal Agent. NANOMATERIALS (BASEL, SWITZERLAND) 2018; 8:E23. [PMID: 29300312 PMCID: PMC5791110 DOI: 10.3390/nano8010023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 12/28/2017] [Accepted: 12/30/2017] [Indexed: 11/16/2022]
Abstract
This study describes the in-silico design, synthesis, and evaluation of a cross-linked PVA hydrogel (CLPH) for the absorption of organophosphorus pesticide dimethoate from aqueous solutions. The crosslinking effectiveness of 14 dicarboxilic acids was evaluated through in-silico studies using semiempirical quantum mechanical calculations. According to the theoretical studies, the nanopore of PVA cross-linked with malic acid (CLPH-MA) showed the best interaction energy with dimethoate. Later, using all-atom molecular dynamics simulations, three hydrogels with different proportions of PVA:MA (10:2, 10:4, and 10:6) were used to evaluate their interactions with dimethoate. These results showed that the suitable crosslinking degree for improving the affinity for the pesticide was with 20% (W%) of the cross-linker. In the experimental absorption study, the synthesized CLPH-MA20 recovered 100% of dimethoate from aqueous solutions. Therefore, the theoretical data were correlated with the experimental studies. Surface morphology of CLPH-MA20 by Scanning Electron Microscopy (SEM) was analyzed. In conclusion, the ability of CLPH-MA20 to remove dimethoate could be used as a technological alternative for the treatment of contaminated water.
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Affiliation(s)
- Fabian Avila-Salas
- Centro de Nanotecnología Aplicada, Facultad de Ciencias, Universidad Mayor, Huechuraba 8580000, Chile.
- Centro de Bioinformática y Simulación Molecular, Facultad de Ingeniería, Universidad de Talca, Talca 3460000, Chile.
| | - Adolfo Marican
- Instituto de Química de Recursos Naturales, Universidad de Talca, Talca 3460000, Chile.
| | - Jorge Villaseñor
- Instituto de Química de Recursos Naturales, Universidad de Talca, Talca 3460000, Chile.
| | - Mauricio Arenas-Salinas
- Centro de Bioinformática y Simulación Molecular, Facultad de Ingeniería, Universidad de Talca, Talca 3460000, Chile.
| | - Yerko Argandoña
- Centro de Bioinformática y Simulación Molecular, Facultad de Ingeniería, Universidad de Talca, Talca 3460000, Chile.
| | - Julio Caballero
- Centro de Bioinformática y Simulación Molecular, Facultad de Ingeniería, Universidad de Talca, Talca 3460000, Chile.
| | - Esteban F Durán-Lara
- Instituto de Química de Recursos Naturales, Universidad de Talca, Talca 3460000, Chile.
- Biomaterials and Drug Delivery Laboratory, Núcleo Científico Multidisciplinario, Dirección de Investigación, Universidad de Talca, Talca 3460000, Chile.
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21
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Molecular-trapping in Emulsion's Monolayer: A New Strategy for Production and Purification of Bioactive Saponins. Sci Rep 2017; 7:14511. [PMID: 29109460 PMCID: PMC5674058 DOI: 10.1038/s41598-017-15067-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 10/16/2017] [Indexed: 11/23/2022] Open
Abstract
Saponins from defatted root-extract of Securidaca longipedunculata were systematically entrapped in emulsion monolayer-barrier and finally recovered in pure form through demulsification. First, their molecules were dispersed in water to engineer a monomolecular film architecture, via self-assembly. Emulsifying with ethyl-ether resulted in swollen micelles and engendered phase-inversion and phase-separation, by disrupting the thermodynamic equilibrium. As positive outcome, a Winsor II system was obtained, having saponin-rich upper phase (ethyl-ether) and impurities bound lower phase (aqueous). Saponin particles underwent transition in insoluble ethyl-ether, precipitated and recovered as solids. The entire process was bioactivity-guided and validated using pooled fractions of securidaca saponins, purified by TLC (RP-C18, F254S). TEM and SEM revealed interesting morphologies and particle sizes between nanometer and micron. At the end, purity output of 90% and total recovery of 94% were achieved. Here we show that “molecular-trapping in emulsion’s monolayer” is an effective method for recovery, production and purification of saponins of plant origin.
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22
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Makina Y, Mahjoubi K, Benoit DM, Jaidane NE, Al-Mogren MM, Hochlaf M. Periodic Dispersion-Corrected Approach for Isolation Spectroscopy of N 2 in an Argon Environment: Clusters, Surfaces, and Matrices. J Phys Chem A 2017; 121:4093-4102. [PMID: 28485607 DOI: 10.1021/acs.jpca.7b00093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Ab initio and Perdew, Burke, and Ernzerhof (PBE) density functional theory with dispersion correction (PBE-D3) calculations are performed to study N2-Arn (n ≤ 3) complexes and N2 trapped in Ar matrix (i.e., N2@Ar). For cluster computations, we used both Møller-Plesset (MP2) and PBE-D3 methods. For N2@Ar, we used a periodic-dispersion corrected model for Ar matrix, which consists on a slab of four layers of Ar atoms. We determined the equilibrium structures and binding energies of N2 interacting with these entities. We also deduced the N2 vibrational frequency shifts caused by clustering or embedding compared to an isolated N2 molecule. Upon complexation or embedding, the vibrational frequency of N2 is slightly shifted, while its equilibrium distance remains unchanged. This is due to the weak interactions between N2 and Ar within these compounds. Our calculations show the importance of inclusion of dispersion effects for the accurate description of geometrical and spectroscopic parameters of N2 isolated, in interaction with Ar surfaces, or trapped in Ar matrices.
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Affiliation(s)
- Y Makina
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications-LSAMA, Université de Tunis El Manar , Tunis 1068, Tunisia
| | - K Mahjoubi
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications-LSAMA, Université de Tunis El Manar , Tunis 1068, Tunisia
| | - D M Benoit
- Chemistry, School of Mathematical and Physical Sciences, University of Hull , Hull HU6 7RX, U.K
| | - N-E Jaidane
- Laboratoire de Spectroscopie Atomique, Moléculaire et Applications-LSAMA, Université de Tunis El Manar , Tunis 1068, Tunisia
| | - M Mogren Al-Mogren
- Chemistry Department, Faculty of Science, King Saud University , PO Box 2455, Riyadh 11451, Kingdom of Saudi Arabia
| | - M Hochlaf
- Université Paris-Est , Laboratoire Modélisation et Simulation Multi Echelle, MSME UMR 8208 CNRS, 5 bd Descartes, 77454 Marne-la-Vallée, France
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23
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Huang WC, Ali F, Zhao J, Rhee K, Mou C, Bettinger CJ. Ultrasound-Mediated Self-Healing Hydrogels Based on Tunable Metal-Organic Bonding. Biomacromolecules 2017; 18:1162-1171. [PMID: 28245355 DOI: 10.1021/acs.biomac.6b01841] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Stimulus-responsive hydrogels make up an important class of programmable materials for a wide range of biomedical applications. Ultrasound (US) is a stimulus that offers utility because of its ability to permeate tissue and rapidly induce chemical alterations in aqueous media. Here we report on the synthesis and US-mediated disintegration of stimulus-responsive telechelic Dopa-modified polyethylene glycol-based hydrogels. Fe3+-[PEG-Dopa]4 hydrogels are formed through Fe3+-induced cross-linking of four-arm polyethylene glycol-dopamine precursors to produce networks. The relative amounts of H-bonds, coordination bonds, and covalent bonds can be controlled by the [Fe3+]:[Dopa] molar ratio in precursor solutions. Networks formed from precursors with high [Fe3+]:[Dopa] ratios create mechanically robust networks (G' = 6880 ± 240 Pa) that are largely impervious to US-mediated disintegration at intensities of ≤43 W/cm2. Conversely, lightly cross-linked networks formed through [Fe3+]:[Dopa] molar ratios of <0.73 are susceptible to rapid disintegration upon exposure to US. Pulsatile US exposure allows temporal control over hydrogel disintegration and programmable self-healing. Sustained US energy can also stabilize hydrogels through the formation of additional cross-links via free radical-mediated coupling of pendant catechols. Taken together, the diverse ranges of mechanical behavior, self-healing capability, and differential susceptibility to ultrasonic disintegration suggest that Fe3+-[PEG-Dopa]4 hydrogels yield a class of application-specific stimulus-responsive polymers as smart materials for applications ranging from transient medical implants to matrices for smart drug delivery.
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Affiliation(s)
- Wei-Chen Huang
- Graduate Institute of Biomedical Materials and Tissue Engineering, Taipei Medical University , 250 Wu-Xing Street, Taipei City, 30010 Taiwan
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Adzhri R, Md Arshad M, Gopinath SC, Ruslinda A, Fathil M, Ayub R, Nor MNM, Voon C. High-performance integrated field-effect transistor-based sensors. Anal Chim Acta 2016; 917:1-18. [DOI: 10.1016/j.aca.2016.02.042] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 02/24/2016] [Accepted: 02/25/2016] [Indexed: 12/18/2022]
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25
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Schammé B, Couvrat N, Malpeli P, Delbreilh L, Dupray V, Dargent É, Coquerel G. Crystallization kinetics and molecular mobility of an amorphous active pharmaceutical ingredient: A case study with Biclotymol. Int J Pharm 2015; 490:248-57. [DOI: 10.1016/j.ijpharm.2015.05.036] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Revised: 05/11/2015] [Accepted: 05/12/2015] [Indexed: 11/17/2022]
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26
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Kowalewska A, Nowacka M, Tracz A, Makowski T. Supramolecular self-assembly of linear oligosilsesquioxanes on mica--AFM surface imaging and hydrophilicity studies. SOFT MATTER 2015; 11:4818-4829. [PMID: 25982889 DOI: 10.1039/c5sm00787a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Linear oligomeric [2-(carboxymethylthio)ethylsilsesquioxanes] (LPSQ-COOH) adsorb spontaneously on muscovite mica and form smooth, well-ordered lamellar structures at the liquid-solid interface. Side carboxylic groups, having donor-acceptor character with regard to hydrogen bonds, are engaged both in multipoint molecule-to-substrate interactions and intermolecular cross-linking. The unique arrangement of silsesquioxane macromolecules, with COOH groups situated at the interface with air, produces highly hydrophilic surfaces of good thermal and solvolytic stability. Supramolecular assemblies of LPSQ-COOH were studied using atomic force microscopy (AFM), angle-resolved X-ray photoelectron spectroscopy (ARXPS) and attenuated total reflectance (ATR) FTIR spectroscopy. Comparative height profile analysis combined with ATR-FTIR studies of the spectral regions characteristic of carboxylic groups and C1s core level envelope by XPS confirmed specific interactions between LPSQ-COOH and mica.
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Affiliation(s)
- Anna Kowalewska
- Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland.
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27
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Dhotel A, Chen Z, Sun J, Youssef B, Saiter JM, Schönhals A, Tan L, Delbreilh L. From monomers to self-assembled monolayers: the evolution of molecular mobility with structural confinements. SOFT MATTER 2015; 11:719-731. [PMID: 25466448 DOI: 10.1039/c4sm01893a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The effect of structural constriction on molecular mobility is investigated by broadband dielectric spectroscopy (BDS) within three types of molecular arrangements: monomers, oligomers and self-assembled monolayers (SAMs). While disordered monomers exhibit a variety of cooperative and local relaxation processes, the constrained nanodomains of oligomers and highly ordered structure of monolayers exhibit much hindered local molecular fluctuations. Particularly, in SAMs, motions of the silane headgroups are totally prevented whereas the polar endgroups forming the monolayer canopy show only one cooperative relaxation process. This latter molecular fluctuation is, for the first time, observed independently from other overlapping dielectric signals. Numerous electrostatic interactions among those dipolar endgroups are responsible for the strong cooperativity and heterogeneity of the canopy relaxation process. Our data analyses also revealed that the bulkiness of dipolar endgroups can disrupt the organization of the monolayer canopy thus increasing their ability to fluctuate as temperature is increased.
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Affiliation(s)
- Alexandre Dhotel
- AMME-LECAP, EA4528, International Lab., Av. de l'Université, B.P. 12, Normandie Univ. France, Université and INSA Rouen, 76801 Saint Etienne du Rouvray, France.
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28
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Rodríguez-Torres MDP, Díaz-Torres LA, Romero-Servin S. Heparin assisted photochemical synthesis of gold nanoparticles and their performance as SERS substrates. Int J Mol Sci 2014; 15:19239-52. [PMID: 25342319 PMCID: PMC4227271 DOI: 10.3390/ijms151019239] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 09/30/2014] [Accepted: 10/13/2014] [Indexed: 01/22/2023] Open
Abstract
Reactive and pharmaceutical-grade heparins were used as biologically compatible reducing and stabilizing agents to photochemically synthesize colloidal gold nanoparticles. Aggregates and anisotropic shapes were obtained photochemically under UV black-light lamp irradiation (λ = 366 nm). Heparin-functionalized gold nanoparticles were characterized by Scanning Electron Microscopy and UV-Vis spectroscopy. The negatively charged colloids were used for the Surface Enhanced Raman Spectroscopy (SERS) analysis of differently charged analytes (dyes). Measurements of pH were taken to inspect how the acidity of the medium affects the colloid-analyte interaction. SERS spectra were taken by mixing the dyes and the colloidal solutions without further functionalization or addition of any aggregating agent.
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Affiliation(s)
- Maria del Pilar Rodríguez-Torres
- Grupo de Espectroscopia de Materiales Avanzados y Nanoestructurados (GEMANA), Centro de Investigaciones en Óptica, A.C. Loma del Bosque 115, León, Guanajuato, C.P. 37150, Mexico.
| | - Luis Armando Díaz-Torres
- Grupo de Espectroscopia de Materiales Avanzados y Nanoestructurados (GEMANA), Centro de Investigaciones en Óptica, A.C. Loma del Bosque 115, León, Guanajuato, C.P. 37150, Mexico.
| | - Sergio Romero-Servin
- Centro de Investigaciones en Óptica, A.C., Loma del Bosque 115, León, Guanajuato, C.P. 37150, Mexico.
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29
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Iden H, Morin JF, Fontaine FG. Synthesis of tetrathiafulvalene-containing zirconium(IV) pincers and metallocavitands for hosting fullerenes. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.04.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Murdock CR, McNutt NW, Keffer DJ, Jenkins DM. Rotating Phenyl Rings as a Guest-Dependent Switch in Two-Dimensional Metal–Organic Frameworks. J Am Chem Soc 2014; 136:671-8. [DOI: 10.1021/ja4088709] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Christopher R. Murdock
- Department of Chemistry, ‡Department of Chemical
and Biomolecular Engineering, and §Department of
Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
| | - Nicholas W. McNutt
- Department of Chemistry, ‡Department of Chemical
and Biomolecular Engineering, and §Department of
Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
| | - David J. Keffer
- Department of Chemistry, ‡Department of Chemical
and Biomolecular Engineering, and §Department of
Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
| | - David M. Jenkins
- Department of Chemistry, ‡Department of Chemical
and Biomolecular Engineering, and §Department of
Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996-1600, United States
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Murdock CR, Hughes BC, Lu Z, Jenkins DM. Approaches for synthesizing breathing MOFs by exploiting dimensional rigidity. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2013.09.006] [Citation(s) in RCA: 119] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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