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JIANG X, WAN D, ZHENG F, XIE Y. Ionization Equilibrium of Water Molecule Dominated Ethanol-water Binary Solution Self-assemble. ELECTROCHEMISTRY 2022. [DOI: 10.5796/electrochemistry.22-00054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Xinyue JIANG
- School of Civil Engineering Architecture and Environment, Hubei University of Technology
| | - Duanji WAN
- School of Civil Engineering Architecture and Environment, Hubei University of Technology
| | - Fuping ZHENG
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University
| | - Yuqun XIE
- School of Bioengineering and Food Science, Hubei University of Technology
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Mohanty A, K M, Jena SS, Behera RK. Kinetics of Ferritin Self-Assembly by Laser Light Scattering: Impact of Subunit Concentration, pH, and Ionic Strength. Biomacromolecules 2021; 22:1389-1398. [PMID: 33720694 DOI: 10.1021/acs.biomac.0c01562] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Ferritins, the cellular iron repositories, are self-assembled, hollow spherical nanocage proteins composed of 24 subunits. The self-assembly process in ferritin generates the electrostatic gradient to rapidly sequester Fe(II) ions, thereby minimizing its toxicity (Fenton reaction). Although the factors that drive self-assembly and control its kinetics are little investigated, its inherent reversibility has been utilized for cellular imaging and targeted drug delivery. The current work tracks the kinetics of ferritin self-assembly by laser light scattering and investigates the factors that influence the process. The formation of partially structured subunit-monomers/dimers, at pH ≤ 1.5, serves as the starting material for the self-assembly, which upon increasing the pH exhibits biphasic behavior (a rapid assembly process coupled with subunit folding followed by a slower reassembly/reorganization process) and completes within 10 min. The ferritin self-assembly accelerated with subunit concentration and ionic strength (t1/2 decreases in both the cases) but slowed down with the pH of the medium from 5.5 to 7.5 (t1/2 increases). These findings would help to regulate the ferritin self-assembly to enhance the loading/unloading of drugs/nanomaterials for exploiting it as a nanocarrier and nanoreactor.
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Affiliation(s)
- Abhinav Mohanty
- Department of Chemistry, National Institute of Technology, Rourkela 769008 Odisha, India
| | - Mithra K
- Department of Physics and Astronomy, National Institute of Technology, Rourkela 769008 Odisha, India
| | - Sidhartha S Jena
- Department of Physics and Astronomy, National Institute of Technology, Rourkela 769008 Odisha, India
| | - Rabindra K Behera
- Department of Chemistry, National Institute of Technology, Rourkela 769008 Odisha, India
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Phthalocyanine-modified surfactant-encapsulated polyoxometalate and its self-assembly in solution. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Chen WC, Li HL, Wang XL, Shao KZ, Su ZM, Wang EB. Assembly of Cerium(III)-Stabilized Polyoxotungstate Nanoclusters with SeO32−/TeO32−Templates: From Single Polyoxoanions to Inorganic Hollow Spheres in Dilute Solution. Chemistry 2013; 19:11007-15. [DOI: 10.1002/chem.201300615] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Revised: 05/05/2013] [Indexed: 11/09/2022]
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Yin P, Li D, Liu T. Solution behaviors and self-assembly of polyoxometalates as models of macroions and amphiphilic polyoxometalate-organic hybrids as novel surfactants. Chem Soc Rev 2012; 41:7368-83. [PMID: 22858584 DOI: 10.1039/c2cs35176e] [Citation(s) in RCA: 254] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Large, hydrophilic polyoxoanions with high solubility in water and/or other polar solvents demonstrate unique solution behavior by self-assembling into single layer, hollow, spherical "blackberry" structures, which is obviously different from small, simple ions. These macroions cannot be treated as insoluble colloidal suspensions because they form stable "real solutions". Counterion-mediated attraction is considered as the main driving force for the self-assembly behavior. The size disparity between the macroions and their counterions results in macroion-counterion pairing which leads to the inter-macroanionic attraction. The blackberries, with robust membranes semi-permeable to cations, can adjust their size accurately and reversibly in response to the change of solvent polarity and charge density of individual macroions. The inorganic macroions with well-defined size, shape, mass, charge density, but no intramolecular interactions, are ideal model systems to study the intermolecular interactions in polyelectrolyte and bio-macromolecular solutions. The blackberry structures show certain similarities to spherical viral capsids, from the overall structure to the formation kinetics. More amazingly, these inorganic macroions demonstrate some features usually believed to belong only to complex biological molecules, such as the self-recognition in dilute solutions. Meanwhile, polyoxometalates-based organic-inorganic hybrid materials demonstrate amphiphilic properties by self-assembling into vesicles and reverse vesicles in polar and non-polar solvents, respectively, and form monolayer at the water/air interface. Different from conventional amphiphiles, these hybrids show pH-dependent and counterion-dependent self-assembly behaviors with controllable functionality, e.g. fluorescence and catalytic activity, due to the high and tunable charges and the functionalities of POM polar head groups.
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Affiliation(s)
- Panchao Yin
- Department of Chemistry, Lehigh University, 6 E Packer Avenue, Bethlehem, USA
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Smal C, Alonso LG, Wetzler DE, Heer A, de Prat Gay G. Ordered self-assembly mechanism of a spherical oncoprotein oligomer triggered by zinc removal and stabilized by an intrinsically disordered domain. PLoS One 2012; 7:e36457. [PMID: 22590549 PMCID: PMC3348928 DOI: 10.1371/journal.pone.0036457] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Accepted: 04/06/2012] [Indexed: 12/21/2022] Open
Abstract
Background Self-assembly is a common theme in proteins of unrelated sequences or functions. The human papillomavirus E7 oncoprotein is an extended dimer with an intrinsically disordered domain, that can form large spherical oligomers. These are the major species in the cytosol of HPV transformed and cancerous cells. E7 binds to a large number of targets, some of which lead to cell transformation. Thus, the assembly process not only is of biological relevance, but represents a model system to investigate a widely distributed mechanism. Methodology/Principal Findings Using various techniques, we monitored changes in secondary, tertiary and quaternary structure in a time course manner. By applying a robust kinetic model developed by Zlotnik, we determined the slow formation of a monomeric “Z-nucleus” after zinc removal, followed by an elongation phase consisting of sequential second-order events whereby one monomer is added at a time. This elongation process takes place at a strikingly slow overall average rate of one monomer added every 28 seconds at 20 µM protein concentration, strongly suggesting either a rearrangement of the growing complex after binding of each monomer or the existence of a “conformation editing” mechanism through which the monomer binds and releases until the appropriate conformation is adopted. The oligomerization determinant lies within its small 5 kDa C-terminal globular domain and, remarkably, the E7 N-terminal intrinsically disordered domain stabilizes the oligomer, preventing an insoluble amyloid route. Conclusion We described a controlled ordered mechanism with features in common with soluble amyloid precursors, chaperones, and other spherical oligomers, thus sharing determining factors for symmetry, size and shape. In addition, such a controlled and discrete polymerization reaction provides a valuable tool for nanotechnological applications. Finally, its increased immunogenicity related to its supramolecular structure is the basis for the development of a promising therapeutic vaccine candidate for treating HPV cancerous lesions.
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Affiliation(s)
- Clara Smal
- Fundación Instituto Leloir and Instituto de Investigaciones Bioquímicas-Conicet, Buenos Aires, Argentina
| | | | - Diana E. Wetzler
- Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Buenos Aires, Argentina
| | - Angeles Heer
- Fundación Instituto Leloir and Instituto de Investigaciones Bioquímicas-Conicet, Buenos Aires, Argentina
| | - Gonzalo de Prat Gay
- Fundación Instituto Leloir and Instituto de Investigaciones Bioquímicas-Conicet, Buenos Aires, Argentina
- * E-mail:
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Braun J, Renggli K, Razumovitch J, Vebert C. Dynamic Light Scattering in Supramolecular Materials Chemistry. Supramol Chem 2012. [DOI: 10.1002/9780470661345.smc039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Ibrahim M, Mal SS, Bassil BS, Banerjee A, Kortz U. Yttrium(III)-Containing Tungstoantimonate(III) Stabilized by Tetrahedral WO42− Capping Unit, [{Y(α-SbW9O31(OH)2)(CH3COO)(H2O)}3(WO4)]17−. Inorg Chem 2010; 50:956-60. [DOI: 10.1021/ic102149c] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Masooma Ibrahim
- Jacobs University, School of Engineering and Science, P.O. Box 750 561, 28725 Bremen, Germany
| | - Sib Sankar Mal
- Jacobs University, School of Engineering and Science, P.O. Box 750 561, 28725 Bremen, Germany
| | - Bassem S. Bassil
- Jacobs University, School of Engineering and Science, P.O. Box 750 561, 28725 Bremen, Germany
| | - Abhishek Banerjee
- Jacobs University, School of Engineering and Science, P.O. Box 750 561, 28725 Bremen, Germany
| | - Ulrich Kortz
- Jacobs University, School of Engineering and Science, P.O. Box 750 561, 28725 Bremen, Germany
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Hussain F, Degonda A, Sandriesser S, Fox T, Mal SS, Kortz U, Patzke GR. Yttrium containing head-on complexes of silico- and germanotungstate: Synthesis, structure and solution properties. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.07.053] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Liu T. Hydrophilic macroionic solutions: what happens when soluble ions reach the size of nanometer scale? LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:9202-13. [PMID: 19888730 DOI: 10.1021/la902917q] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Large, hydrophilic inorganic ions (mostly polyoxometalate macroions and cationic metal-organic hybrid nanocages) with high solubility in water and/or other polar solvents demonstrate unique solution behaviors. In dilute solutions, they behave significantly different from small simple ions (as described by the Debye-Hückel theory) because the macroions cannot be treated as point charges or large, insoluble colloidal suspensions (usually described by the DLVO theory) because the macroions form homogeneous, stable "real solutions". The size disparity between the macroions and their counterions results in complex macroion-counterion interaction and leads to the self-assembly of macroions into single-layered, hollow, spherical "blackberry" structures. The blackberries, with robust and very stable structures mimicking biological membranes, can adjust their size accurately and reversibly in response to the change of solvent content, charge density on the macroions, or in some cases merely solution pH. The blackberry membrane is permeable to small cations. The inorganic macroions with well-defined size, shape, mass, charge density (even accurately tunable within certain range), and no intramolecular interaction can be treated as simple model systems to understand the intermolecular interaction in polyelectrolyte solutions. The blackberry structures show certain similarities to the spherical virus capsids, from the overall structure to the kinetic properties of formation.
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Affiliation(s)
- Tianbo Liu
- Department of Chemistry, Lehigh University, 6 East Packer Avenue, Bethlehem, Pennsylvania 18015, USA.
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Zhang J, Liu T, Mal SS, Kortz U. Unique Supramolecular Assembly of Wheel-Shaped Nanoscale Polyanions with a Hydrophobic Core. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000396] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Long DL, Tsunashima R, Cronin L. Polyoxometallate als Bausteine für funktionelle Nanosysteme. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200902483] [Citation(s) in RCA: 370] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Long DL, Tsunashima R, Cronin L. Polyoxometalates: Building Blocks for Functional Nanoscale Systems. Angew Chem Int Ed Engl 2010; 49:1736-58. [DOI: 10.1002/anie.200902483] [Citation(s) in RCA: 1829] [Impact Index Per Article: 130.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Bao YY, Bi LH, Wu LX, Mal SS, Kortz U. Preparation and characterization of Langmuir-Blodgett films of wheel-shaped Cu-20 tungstophosphate and DODA by two different strategies. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:13000-13006. [PMID: 19899818 DOI: 10.1021/la901854e] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
A novel surfactant-encapsulated organic-inorganic hybrid compound (DODA)(24)Li[Cu(20)Cl(OH)(24)(P(8)W(48)O(184))] x 18 H(2)O (DODA-Cu20) has been prepared from the wheel-shaped tungstophosphate salt K(12)Li(13)[Cu(20)Cl(OH)(24)(H(2)O)(12)(P(8)W(48)O(184))] x 22 H(2)O (Cu20) and dimethyldioctadecylammonium bromide (DODA), and it has been characterized by elemental analysis (EA), thermogravimetric analysis (TGA), (1)H NMR, Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD) measurements. Monolayer and multilayer films of DODA-Cu20 were fabricated on different substrates by the Langmuir-Blodgett (LB) technique using H(2)O as the subphase. Another type of organic-inorganic hybrid film, DODA/Cu20, was also deposited on the same substrates as used for the film containing DODA-Cu20 under the same conditions by the LB technique using a Cu20 aqueous solution as the subphase and DODA as the cationic amphiphile for comparison. Both thus-prepared organic-inorganic hybrid films were characterized by UV-vis spectroscopy, XRD, transmission and polarized FT-IR spectroscopy, X-ray photoelectron spectroscopy (XPS), and atomic force microscopy (AFM). The results indicate that stable monolayers at the air-water interface for DODA-Cu20 and at the air-Cu20 solution interface for DODA can be formed and that two LB films containing DODA-Cu20 and DODA/Cu20 constructed by two different methods both exhibit well-ordered lamellar structures. It is proposed that Cu20 exhibits different packing modes in the two LB films depending on the deposition strategy used.
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Affiliation(s)
- Ya-Yan Bao
- College of Chemistry, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, People's Republic of China
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Pradeep C, Misdrahi M, Li FY, Zhang J, Xu L, Long DL, Liu T, Cronin L. Synthesis of Modular “Inorganic-Organic-Inorganic” Polyoxometalates and Their Assembly into Vesicles. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200903070] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Pradeep C, Misdrahi M, Li FY, Zhang J, Xu L, Long DL, Liu T, Cronin L. Synthesis of Modular “Inorganic-Organic-Inorganic” Polyoxometalates and Their Assembly into Vesicles. Angew Chem Int Ed Engl 2009; 48:8309-13. [DOI: 10.1002/anie.200903070] [Citation(s) in RCA: 153] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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