101
|
Chen J, Wu X, Hou X, Su X, Chu Q, Fahruddin N, Zhao JX. Shape-tunable hollow silica nanomaterials based on a soft-templating method and their application as a drug carrier. ACS APPLIED MATERIALS & INTERFACES 2014; 6:21921-21930. [PMID: 25470033 DOI: 10.1021/am507642t] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A one-step soft-templating method for synthesizing shape-tunable hollow silica nanomaterials was developed in a reliable and highly reproducible way. For the first time, both nonspherical and spherical shapes with hollow interiors, including nanowire, nanospheres, and nanotadpole, were successfully obtained by simply changing the solvent. Poly(vinylpyrrolidone) (PVP)-water droplets were used as soft templates for the formation of hollow structures, while three different solvents, including 1-propanol, 1-pentanol, and ethanol, led to the designed shapes. It was found that the solvent, the formation of PVP-water droplets, the amount of ammonia, and the reaction time had great effects on the morphology of synthesized hollow nanomaterials. The effect of various factors on the morphology was systematically studied to propose a growth mechanism. The obtained hollow silica nanomaterials showed excellent reproducibility and great potential for a large-scale synthesis. Finally, the application of the developed hollow silica nanomaterials was demonstrated using the hollow spherical silica nanoparticles. Its drug-carrying ability was studied. The results could be extended for doping various target molecules into the hollow structures for a broad range of applications.
Collapse
Affiliation(s)
- Jiao Chen
- Department of Chemistry, University of North Dakota , Grand Forks, North Dakota 58202, United States
| | | | | | | | | | | | | |
Collapse
|
102
|
Hsieh YH, Hsiao YT, Jan JS. Shell and core cross-linked poly(L-lysine)/poly(acrylic acid) complex micelles. SOFT MATTER 2014; 10:9568-9576. [PMID: 25357089 DOI: 10.1039/c4sm02033b] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We report the versatility of polyion complex (PIC) micelles for the preparation of shell and core cross-linked (SCL and CCL) micelles with their surface properties determined by the constituent polymer composition and cross-linking agent. The negatively and positively charged PIC micelles with their molecular structure and properties depending on the mixing weight percentage and polymer molecular weight were first prepared by mixing the negatively and positively charged polyions, poly(acrylic acid) (PAA) and poly(L-lysine) (PLL). The feasibility of preparing SCL micelles was demonstrated by cross-linking the shell of the negatively and positively charged micelles using cystamine and genipin, respectively. The core of the micelles can be cross-linked by silica deposition to stabilize the assemblies. The shell and/or core cross-linked micelles exhibited excellent colloid stability upon changing solution pH. The drug release from the drug-loaded SCL micelles revealed that the controllable permeability of the SCL micelles can be achieved by tuning the cross-linking degree and the SCL micelles exhibited noticeable pH-responsive behavior with accelerated release under acidic conditions. With the versatility of cross-linking strategies, it is possible to prepare a variety of SCL and CCL micelles from PIC micelles.
Collapse
Affiliation(s)
- Yi-Hsuan Hsieh
- Department of Chemical Engineering, National Cheng Kung University, No. 1 University Rd, Tainan City, Taiwan 701.
| | | | | |
Collapse
|
103
|
Serine-rich protein is a novel positive regulator for silicon accumulation in mangrove. Gene 2014; 556:170-81. [PMID: 25479011 DOI: 10.1016/j.gene.2014.11.055] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 11/09/2014] [Accepted: 11/23/2014] [Indexed: 11/21/2022]
Abstract
Silicon (Si) plays an important role in reducing plant susceptibility against a variety of different biotic and abiotic stresses; and also has an important regulatory role in soil to avoid heavy metal toxicity and providing suitable growing conditions for plants. A full-length cDNAs of 696bp of serine-rich protein was cloned from mangrove plant (Rhizophora apiculata) by amplification of cDNA ends from an expressed sequence tag homologous to groundnut (Arachis hypogaea), submitted to NCBI (KF211374). This serine-rich protein gene encodes a deduced protein of 223 amino acids. The transcript titre of the serine-rich protein was found to be strongly enriched in roots compared with the leaves of two month old mangrove plants and expression level of this serine-rich protein was found to be strongly induced when the mangrove seedlings were exposed to SiO2. Expression of the serine-rich protein transgenic was detected in transgenic Arabidopsis thaliana, where the amount of serine increased from 1.02 to 37.8mg/g. The same trend was also seen in Si content in the roots (14.3%) and leaves (7.4%) of the transgenic A. thaliana compared to the wild-type plants under Si treatment. The biological results demonstrated that the accumulation of the serine amino acid in the vegetative tissues of the transgenic plants enhanced their ability to absorb and accumulate more Si in the roots and leaves and suggests that the serine-rich protein gene has potential for use in genetic engineering of different stress tolerance characteristics.
Collapse
|
104
|
Jo BH, Seo JH, Yang YJ, Baek K, Choi YS, Pack SP, Oh SH, Cha HJ. Bioinspired Silica Nanocomposite with Autoencapsulated Carbonic Anhydrase as a Robust Biocatalyst for CO2 Sequestration. ACS Catal 2014. [DOI: 10.1021/cs5008409] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Byung Hoon Jo
- School
of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang 790-784, Korea
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Jeong Hyun Seo
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
- School
of Chemical Engineering, Yeungnam University, Gyeongsan 712-749, Korea
| | - Yun Jung Yang
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Kyungjoon Baek
- Department
of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Yoo Seong Choi
- Department
of Chemical Engineering, Chungnam National University, Daejeon 305-764, Korea
| | - Seung Pil Pack
- Department
of Biotechnology and Bioinformatics, Korea University, Sejong 339-700, Korea
| | - Sang Ho Oh
- Department
of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Hyung Joon Cha
- School
of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang 790-784, Korea
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| |
Collapse
|
105
|
Polyelectrolyte complex-silica hybrid colloidal particles decorated with different polyelectrolytes. J Colloid Interface Sci 2014; 438:94-101. [PMID: 25454430 DOI: 10.1016/j.jcis.2014.09.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Revised: 09/19/2014] [Accepted: 09/23/2014] [Indexed: 11/24/2022]
Abstract
We report the synthesis of polyelectrolyte-decorated hybrid colloidal particles by using negatively charged polyelectrolyte complex (PEC) micelles as colloidal templates for silica mineralization under ambient conditions. The negatively charged polyelectrolytes including poly(acrylic acid) (PAA), poly(L-glutamic acid) (PLGA), and poly(styrene sulfonate) (PSS) were complexed with poly(L-lysine) at non-stoichiometric mixing weight percentage to form negatively charged PEC micelles. Varying the mixing weight percentage and molecular weight of polyelectrolytes led to the changes in the size and charge of the PEC particles. Silica mineralization in the complex core resulted in the colloidally stable hybrid particles decorated with different negatively charged polyelectrolytes. The colloidal properties of these polyelectrolyte-decorated hybrid particles were determined by the composition and decorated polyelectrolyte. This approach provided a simple and facile method to prepare polymer-decorated hybrid colloidal particles comprised of different polymers and their colloidal properties can be easily tuned by varying the decorated polymer and synthesis condition.
Collapse
|
106
|
Fernandes FM, Coradin T, Aimé C. Self-Assembly in Biosilicification and Biotemplated Silica Materials. NANOMATERIALS (BASEL, SWITZERLAND) 2014; 4:792-812. [PMID: 28344249 PMCID: PMC5304690 DOI: 10.3390/nano4030792] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2014] [Revised: 07/29/2014] [Accepted: 07/30/2014] [Indexed: 01/29/2023]
Abstract
During evolution, living organisms have learned to design biomolecules exhibiting self-assembly properties to build-up materials with complex organizations. This is particularly evidenced by the delicate siliceous structures of diatoms and sponges. These structures have been considered as inspiration sources for the preparation of nanoscale and nanostructured silica-based materials templated by the self-assembled natural or biomimetic molecules. These templates range from short peptides to large viruses, leading to biohybrid objects with a wide variety of dimensions, shapes and organization. A more recent strategy based on the integration of biological self-assembly as the driving force of silica nanoparticles organization offers new perspectives to elaborate highly-tunable, biofunctional nanocomposites.
Collapse
Affiliation(s)
- Francisco M Fernandes
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Collège de France, UMR 7574, Chimie de la Matière Condensée de Paris, F-75005 Paris, France.
| | - Thibaud Coradin
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Collège de France, UMR 7574, Chimie de la Matière Condensée de Paris, F-75005 Paris, France.
| | - Carole Aimé
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, Collège de France, UMR 7574, Chimie de la Matière Condensée de Paris, F-75005 Paris, France.
| |
Collapse
|
107
|
Wibowo D, Zhao CX, Middelberg APJ. Emulsion-templated silica nanocapsules formed using bio-inspired silicification. Chem Commun (Camb) 2014; 50:11325-8. [DOI: 10.1039/c4cc04904g] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
108
|
High-resolution analysis of the influence of reactant concentration on nucleation time and growth of polyethyleneimine-trimethoxymethylsilane particles. Colloid Polym Sci 2014. [DOI: 10.1007/s00396-014-3312-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
109
|
Li J, Xu L, Liu H, Wang Y, Wang Q, Chen H, Pan W, Li S. Biomimetic synthesized nanoporous silica@poly(ethyleneimine)s xerogel as drug carrier: Characteristics and controlled release effect. Int J Pharm 2014; 467:9-18. [DOI: 10.1016/j.ijpharm.2014.03.045] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2013] [Revised: 03/04/2014] [Accepted: 03/23/2014] [Indexed: 10/25/2022]
|
110
|
|
111
|
Lechner CC, Becker CFW. A sequence-function analysis of the silica precipitating silaffin R5 peptide. J Pept Sci 2014; 20:152-8. [DOI: 10.1002/psc.2577] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2013] [Accepted: 09/30/2013] [Indexed: 11/05/2022]
Affiliation(s)
- Carolin C. Lechner
- University of Vienna; Department of Chemistry, Institute of Biological Chemistry; Währinger Straße 38 1090 Vienna Austria
| | - Christian F. W. Becker
- University of Vienna; Department of Chemistry, Institute of Biological Chemistry; Währinger Straße 38 1090 Vienna Austria
| |
Collapse
|
112
|
Passos MLC, Pereira M, Saraiva MLMFS, Rangel M, Moniz T, Santos JLM, Frigerio C. Silica nanostructures synthesis and CdTe quantum dots immobilization for photocatalytical applications. RSC Adv 2014. [DOI: 10.1039/c4ra09748c] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new strategy for the immobilization of semiconductor nanocrystals by carrying out in simultaneous the biomimetic synthesis of silica nanostructures and the encapsulation of MPA-capped CdTe quantum dots (QDs).
Collapse
Affiliation(s)
- Marieta L. C. Passos
- REQUIMTE
- Departamento de Ciências Químicas
- Faculdade de Farmácia
- Universidade do Porto
- 4050-313 Porto, Portugal
| | - Mariana Pereira
- REQUIMTE
- Departamento de Ciências Químicas
- Faculdade de Farmácia
- Universidade do Porto
- 4050-313 Porto, Portugal
| | - M. Lúcia M. F. S. Saraiva
- REQUIMTE
- Departamento de Ciências Químicas
- Faculdade de Farmácia
- Universidade do Porto
- 4050-313 Porto, Portugal
| | - Maria Rangel
- REQUIMTE
- Instituto de Ciências Biomédicas de Abel Salazar
- Universidade do Porto
- 4050-313, Porto, Portugal
| | - Tania Moniz
- REQUIMTE
- Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- 4169-007 Porto, Portugal
| | - João L. M. Santos
- REQUIMTE
- Departamento de Ciências Químicas
- Faculdade de Farmácia
- Universidade do Porto
- 4050-313 Porto, Portugal
| | - Christian Frigerio
- REQUIMTE
- Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- 4169-007 Porto, Portugal
| |
Collapse
|
113
|
|
114
|
Steven CR, Busby GA, Mather C, Tariq B, Briuglia ML, Lamprou DA, Urquhart AJ, Grant MH, Patwardhan SV. Bioinspired silica as drug delivery systems and their biocompatibility. J Mater Chem B 2014; 2:5028-5042. [DOI: 10.1039/c4tb00510d] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Green nanosilicas offer improved biocompatibility and are excellent alternatives for drug delivery systems as they provide tailorability and eliminate many of the potential biomedical issues associated with mesoporous silicas.
Collapse
Affiliation(s)
- Christopher R. Steven
- Chemical and Process Engineering
- University of Strathclyde
- Glasgow, UK
- Pure and Applied Chemistry
- University of Strathclyde
| | - Grahame A. Busby
- Chemical and Process Engineering
- University of Strathclyde
- Glasgow, UK
- Department of Biomedical Engineering
- University of Strathclyde
| | - Craig Mather
- Chemical and Process Engineering
- University of Strathclyde
- Glasgow, UK
| | - Balal Tariq
- Chemical and Process Engineering
- University of Strathclyde
- Glasgow, UK
- Department of Biomedical Engineering
- University of Strathclyde
| | - Maria Lucia Briuglia
- Strathclyde Institute of Pharmacy and Biomedical Sciences
- University of Strathclyde
- Glasgow, UK
| | - Dimitrios A. Lamprou
- Strathclyde Institute of Pharmacy and Biomedical Sciences
- University of Strathclyde
- Glasgow, UK
| | - Andrew J. Urquhart
- Strathclyde Institute of Pharmacy and Biomedical Sciences
- University of Strathclyde
- Glasgow, UK
| | - M. Helen Grant
- Department of Biomedical Engineering
- University of Strathclyde
- Glasgow, UK
| | | |
Collapse
|
115
|
Noda D, Arai Y, Souma D, Nagashima H, Jin RH. Poly(N-cyanoethylethyleneimine): a new nanoscale template for biomimetic silicification. Chem Commun (Camb) 2014; 50:10793-6. [DOI: 10.1039/c4cc02285h] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Nanocrystalline entities of poly(N-cyanoethylethyleneimine) (PCEI) could serve as catalytic templates affording nanosheet-based structured silica under mild conditions.
Collapse
Affiliation(s)
- Daisuke Noda
- Institute of Materials Chemistry and Engineering
- Kyushu University
- Fukuoka 816-8580, Japan
| | - Yoshiaki Arai
- Department of Material and Life Chemistry
- Faculty of Engineering
- Kanagawa University
- Yokohama 221-8686, Japan
| | - Daiki Souma
- Department of Material and Life Chemistry
- Faculty of Engineering
- Kanagawa University
- Yokohama 221-8686, Japan
| | - Hideo Nagashima
- Institute of Materials Chemistry and Engineering
- Kyushu University
- Fukuoka 816-8580, Japan
| | - Ren-Hua Jin
- Department of Material and Life Chemistry
- Faculty of Engineering
- Kanagawa University
- Yokohama 221-8686, Japan
| |
Collapse
|
116
|
Liu X, Gao Y, Luo H, Jin R. Synergistically constructed polyamine/nanosilica/graphene composites: preparation, features and removal of Hg2+ and dyes from contaminated water. RSC Adv 2014. [DOI: 10.1039/c3ra46733c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
117
|
Neville F, Seyfaee A. Real-time monitoring of in situ polyethyleneimine-silica particle formation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:14681-14690. [PMID: 24180321 DOI: 10.1021/la403040u] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Silica particles are traditionally made via the hydrolysis and condensation of tetraalkoxysilanes with the use of methanol and ammonia as a basic catalyst. More recently, bioinspired polyamines have been used in place of ammonia. Particle formation via the use of tetraalkoxysilanes typically occurs extremely quickly with cloudy precipitates forming immediately, making it practically impossible to characterize the reaction in real time. Our study uses trimethoxymethylsilane (TMOMS) and the polyamine polyethyleneimine (PEI) to form PEI-silica particles via a reaction that takes place over several minutes, allowing us to study the reaction in real time. The acidic hydrolysis of TMOMS and basic polymerization condensation of TMOMS via PEI to form solid PEI-silica particles were observed in situ over time using attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy and dynamic light scattering (DLS) for the first time. The ATR-FTIR data suggest that dimer formation occurs during acidic hydrolysis followed by PEI-catalyzed condensation to form silsesquioxane structures. The results for the particles formed in situ were then compared with those for particle samples that had been washed to remove excess reactants. The ATR-FTIR results were corroborated via scanning electron microscopy and DLS, which suggest that the growth of PEI-silica particles occurs by aggregation of smaller particles to larger ones, because the data show the presence of small particles and much larger particles at the same time throughout the whole particle growth process.
Collapse
Affiliation(s)
- Frances Neville
- School of Environmental and Life Sciences, The University of Newcastle , Callaghan, NSW 2308, Australia
| | | |
Collapse
|
118
|
Shiu CC, Wang S, Chang CH, Jan JS. Poly(L-glutamic acid)-decorated hybrid colloidal particles from complex particle-templated silica mineralization. J Phys Chem B 2013; 117:10007-16. [PMID: 23822799 DOI: 10.1021/jp403753z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We report the synthesis of polyelectrolyte complex (PEC) particles by mixing the negatively and positively charged polyelectrolytes, poly(L-glutamic acid) (PGA) and poly(2-(N,N-diethylamino) ethylmethacrylate) (PDEAEMA), and the use of negatively charged PEC particles as colloidal templates for silica mineralization under ambient conditions. The structure and property of PEC particles, as well as polypeptide chain conformation, were found to depend on the mixing weight percentage, polymer molecular weight, and solution condition. The negatively charged PEC micelles can be deposited with silica without loss colloid stability, leading to PGA-decorated hybrid particles. These hybrid particles were negatively charged at neutral and basic condition and become positively charged, accompanying the conformational changes of the grafted PGA, upon decreasing pH below isoelectric points due to the protonation/deprotonation of PGA and PDEAEMA. Functional nanoparticles such as gold NPs could be incorporated using polypeptides as the mediating agents. These hybrid particles loaded with drug exhibited noticeable pH-responsive behavior with accelerated release at acidic condition, demonstrating the potential for use as pH-responsive delivery vehicles. This type of polypeptide-decorated hybrid particles represents an interesting class of organic-inorganic hybrids in which the functional properties of polypeptides such as biocompatibility, stimuli responsiveness, and directed growth of metal nanoparticles can be incorporated.
Collapse
Affiliation(s)
- Cheng Chang Shiu
- Department of Chemical Engineering, National Cheng Kung University, No. 1, University Rd., Tainan, Taiwan 70101
| | | | | | | |
Collapse
|
119
|
The formation of polyethyleneimine–trimethoxymethylsilane organic–inorganic hybrid particles. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.04.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
120
|
Lechner CC, Becker CFW. Modified silaffin R5 peptides enable encapsulation and release of cargo molecules from biomimetic silica particles. Bioorg Med Chem 2013; 21:3533-41. [PMID: 23643899 DOI: 10.1016/j.bmc.2013.04.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2013] [Revised: 03/27/2013] [Accepted: 04/03/2013] [Indexed: 11/18/2022]
Abstract
Biomimetic silica formation has attracted increasing interest over the last decade for numerous biotechnological applications due to the favorable mild reaction conditions. Inspired from silica biogenesis in diatoms, peptide variants derived from native silaffins have been used for silica formation in vitro. Here a generally applicable route for covalently linking a cargo molecule to the R5 silaffin peptide via a disulfide linkage is established. The peptide CG12AB, a peptide ligand of the epidermal growth factor receptor, was chosen as model. The ability of such silaffin-cargo conjugates to encapsulate the cargo molecule during silaffin-mediated silica precipitation is demonstrated. Cargo release from silica material under different conditions was analyzed. The results obtained here provide a rational basis for developing engineered R5 silaffin peptides into efficient tools for silica precipitation as well as for entrapment and release of cargo molecules under physiological conditions.
Collapse
Affiliation(s)
- Carolin C Lechner
- University of Vienna, Department of Chemistry, Institute of Biological Chemistry, Währinger Strasse 38, 1090 Vienna, Austria
| | | |
Collapse
|
121
|
Formation of asymmetrical structured silica controlled by a phase separation process and implication for biosilicification. PLoS One 2013; 8:e61164. [PMID: 23585878 PMCID: PMC3621999 DOI: 10.1371/journal.pone.0061164] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Accepted: 03/06/2013] [Indexed: 11/19/2022] Open
Abstract
Biogenetic silica displays intricate patterns assembling from nano- to microsize level and interesting non-spherical structures differentiating in specific directions. Several model systems have been proposed to explain the formation of biosilica nanostructures. Of them, phase separation based on the physicochemical properties of organic amines was considered to be responsible for the pattern formation of biosilica. In this paper, using tetraethyl orthosilicate (TEOS, Si(OCH2CH3)4) as silica precursor, phospholipid (PL) and dodecylamine (DA) were introduced to initiate phase separation of organic components and influence silica precipitation. Morphology, structure and composition of the mineralized products were characterized using a range of techniques including field emission scanning electron microscopy (FESEM), transmission electron microscope (TEM), X-ray diffraction (XRD), thermogravimetric and differential thermal analysis (TG-DTA), infrared spectra (IR), and nitrogen physisorption. The results demonstrate that the phase separation process of the organic components leads to the formation of asymmetrically non-spherical silica structures, and the aspect ratios of the asymmetrical structures can be well controlled by varying the concentration of PL and DA. On the basis of the time-dependent experiments, a tentative mechanism is also proposed to illustrate the asymmetrical morphogenesis. Therefore, our results imply that in addition to explaining the hierarchical porous nanopatterning of biosilica, the phase separation process may also be responsible for the growth differentiation of siliceous structures in specific directions. Because organic amine (e.g., long-chair polyamines), phospholipids (e.g., silicalemma) and the phase separation process are associated with the biosilicification of diatoms, our results may provide a new insight into the mechanism of biosilicification.
Collapse
|
122
|
Postnova I, Silant’ev V, Kim MH, Song GY, Kim I, Ha CS, Shchipunov Y. Hyperbranched polyglycerol hydrogels prepared through biomimetic mineralization. Colloids Surf B Biointerfaces 2013. [DOI: 10.1016/j.colsurfb.2012.10.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
123
|
Lee JK, Kang SM. Mussel- and Diatom-Inspired Micropattern Generation of Silica on a Solid Substrate. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.2.353] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
124
|
Fu C, Wang S, Feng L, Liu X, Ji Y, Tao L, Li S, Wei Y. Hierarchically porous chitosan-PEG-silica biohybrid: synthesis and rapid cell adsorption. Adv Healthc Mater 2013. [PMID: 23184363 DOI: 10.1002/adhm.201200166] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Changkui Fu
- Department of Chemistry, Tsinghua University, Beijing, People's Republic of China
| | | | | | | | | | | | | | | |
Collapse
|
125
|
Chen H, Xia L, Fu W, Yang Z, Li Z. One-step synthesis of water dispersible silica nanoplates. Chem Commun (Camb) 2013; 49:1300-2. [PMID: 23296320 DOI: 10.1039/c2cc38293h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the biomimetic synthesis of polyethylene glycol (PEG) grafted silica nanoplates templated by double hydrophilic PEG-b-poly-L-lysine diblock copolymers. The silica nanoplates can be re-dispersed in PEG selective solvents. The sizes of silica nanoplates can be tuned from a few hundred nanometers to tens of micrometers.
Collapse
Affiliation(s)
- Hong Chen
- Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | | | | | | | | |
Collapse
|
126
|
Forsyth C, Yip TWS, Patwardhan SV. CO2sequestration by enzyme immobilized onto bioinspired silica. Chem Commun (Camb) 2013; 49:3191-3. [DOI: 10.1039/c2cc38225c] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
127
|
Kosma VA, Beltsios KG. Simple solution routes for targeted carbonate phases and intricate carbonate and silicate morphologies. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:289-97. [DOI: 10.1016/j.msec.2012.08.042] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 07/23/2012] [Accepted: 08/29/2012] [Indexed: 10/27/2022]
|
128
|
Wang Q, Yu J, Zheng J, Liu D, Jiang F, Zhang X, Li W. Morphology-controlled synthesis of silica materials templated by self-assembled short amphiphilic peptides. RSC Adv 2013. [DOI: 10.1039/c3ra42183j] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
129
|
Yuan JJ, Zhu PX, Noda D, Jin RH. Controlled synthesis and tunable properties of ultrathin silica nanotubes through spontaneous polycondensation on polyamine fibrils. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2013; 4:793-804. [PMID: 24367748 PMCID: PMC3869340 DOI: 10.3762/bjnano.4.90] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 11/06/2013] [Indexed: 05/08/2023]
Abstract
This paper describes a facile approach to a biomimetic rapid fabrication of ultrathin silica nanotubes with a highly uniform diameter of 10 nm and inner hollow of around 3 nm. The synthesis is carried out through a spontaneous polycondensation of alkoxysilane on polyamine crystalline fibrils that were conveniently produced from the neutralization of a solution of protonated linear polyethyleneimine (LPEI-H(+)) by alkali compounds. A simple mixing the fibrils with alkoxysilane in aqueous solution allowed for the rapid formation of silica to produce LPEI@silica hybrid nanotubes. These 10-nm nanotubes were hierarchically organized in a mat-like morphology with a typical size of 1-2 micrometers. The subsequent removal of organic LPEI via calcination resulted in silica nanotubes that keep this morphology. The morphology, the structure, the pore properties and the formation mechanism of the silica nanotubes were carefully investigated with scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller measurements (BET), and X-ray diffraction (XRD). Detailed studies demonstrated that the formation of the nanotubes depends on the molar ratio of [OH]/[CH2CH2NH] during the neutralization as well as on the basicity of the alkali compound and on the concentration of the silica source. The synthesis of silica nanotubes established here could be easily applied to a fabrication on the kilogram scale. Silica nanotubes that were obtained from the calcination of hybrid nanotubes of LPEI@silica in an N2 atmosphere showed a distinct photoluminescence centered at 540 nm with a maximum excitation wavelength of 320 nm. Furthermore, LPEI@silica hybrid nanotubes were applied to create silica-carbon composite nanotubes by alternative adsorption of ionic polymers and subsequent carbonization.
Collapse
Affiliation(s)
- Jian-Jun Yuan
- Synthetic Chemistry Lab., Kawamura Institute of Chemical Research, 631 Sakado, Sakura, 285-0078, Japan
| | - Pei-Xin Zhu
- Synthetic Chemistry Lab., Kawamura Institute of Chemical Research, 631 Sakado, Sakura, 285-0078, Japan
| | - Daisuke Noda
- Synthetic Chemistry Lab., Kawamura Institute of Chemical Research, 631 Sakado, Sakura, 285-0078, Japan
| | - Ren-Hua Jin
- Department of Material and Life Chemistry, Kanagawa University, and JST-CREST 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| |
Collapse
|
130
|
Forsyth C, Patwardhan SV. Controlling performance of lipase immobilised on bioinspired silica. J Mater Chem B 2013; 1:1164-1174. [DOI: 10.1039/c2tb00462c] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
131
|
Wang Q, Yu J, Zhang X, Liu D, Zheng J, Pan Y, Lin Y. Controlled biosilification using self-assembled short peptides A6K and V6K. RSC Adv 2013. [DOI: 10.1039/c2ra22099g] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
|
132
|
Kasotakis E, Mitraki A. Silica biotemplating by self-assembling peptides via serine residues activated by the peptide amino terminal group. Biopolymers 2012. [DOI: 10.1002/bip.22091] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
133
|
Abstract
Bionanocomposites are a novel class of nanosized materials. They contain the constituent of biological origin and particles with at least one dimension in the range of 1–100 nm. There are similarities with nanocomposites but also fundamental differences in the methods of preparation, properties, functionalities, biodegradability, biocompatibility, and applications. The article includes two parts. Bionanocomposite definition and classification along with nanoparticles, biomaterials, and methods of their preparation are initially reviewed. Then, novel approaches developed by our team are presented. The first approach concerns the preparation of bionanocomposites from chitosan and nanoparticles. It is based on the regulated charging of polysaccharide by the gradual shift of solution pH. When charges appear, the biomacromolecules come into the electrostatic interactions with negatively charged nanoparticles that cause the jellification of solutions. It is also applied to form films. They have a nacre-like structure from stacked planar nanoparticles separated by aligned biomacromolecules. The second approach deals with the biomimicking mineralization of biopolymers by using a novel silica precursor. Its advantage over the current sol-gel processing is in the compatibility and regulation of processes and structure of generated silica. Another example of the mineralization is presented by titania. Syntheses are performed in anhydrous ethylene glycol. Processes and structure of bionanocomposites are regulated by water that is added in an amount to only hydrate functional groups in the carbohydrate macromolecule.
Collapse
Affiliation(s)
- Yury Shchipunov
- 1Institute of Chemistry, Far East Department, Russian Academy of Sciences, 690022 Vladivostok, Russia; The WCU Center for Synthetic Polymer Bioconjugate Hybrid Materials, Department of Polymer Science and Engineering, Pusan National University, San 30, Jangjun Dong, Geumjung Gu, Busan, 609-735 Korea
| |
Collapse
|
134
|
Liu XL, Zhu PX, Gao YF, Jin RH. Polyamine-Promoted Growth of One-Dimensional Nanostructure-Based Silica and Its Feature in Catalyst Design. MATERIALS 2012. [PMCID: PMC5449029 DOI: 10.3390/ma5101787] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Crystalline linear polyethyleneimine (LPEI) is a fascinating polymer that can be used as a catalyst, template and scaffold in order to direct the formation of silica with controllable compositions and spatial structures under mild conditions. Considering the crystallization and assembly of LPEI is temperature-dependent, we adopted different accelerated cooling processes of a hot aqueous solution of LPEI in order to modulate the LPEI crystalline aggregates. We then used them in the hydrolytic condensation of alkoxysilane. A series of silica with nanofibrils, nanotubes and nanowire-based structures were achieved simply by the LPEI aggregates which were pre-formed in defined cooling processes. These specific one-dimensional nanoscale structures assembled into microscale fibers-, sheet- and platelet-like coalescences. Furthermore, the deposition kinetics was also researched by the combination of other characterizations (e.g., pH measurement, 29Si MAS NMR). As a preliminary application, the hybrids of LPEI@SiO2 were used not only as an agent for reducing PtCl42− into Pt but also as host for loading Pt nanoparticles. The Pt-loaded silica showed good catalytic properties in the reduction of Rhodamine B by dimethylaminoborane (DMAB).
Collapse
Affiliation(s)
- Xin-Ling Liu
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China; E-Mails: (X.-L.L.); (Y.-F.G.)
| | - Pei-Xin Zhu
- Synthetic Chemistry Lab., Kawamura Institute of Chemical Research, 631 Sakado, Sakura 285-0078, Japan; E-Mail:
| | - Yan-Feng Gao
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, China; E-Mails: (X.-L.L.); (Y.-F.G.)
| | - Ren-Hua Jin
- Department of Material and Life Chemistry, Faculty of Engineering, Kanagawa University and JST-CREST, 3-2-7 Rokkakubashi, Yokohama 221-8686, Japan
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +81-45-481-5661 (ext. 3845); Fax: +81-45-413-9770
| |
Collapse
|
135
|
Matsukizono H, Jin RH. High-temperature-resistant chiral silica generated on chiral crystalline templates at neutral pH and ambient conditions. Angew Chem Int Ed Engl 2012; 51:5862-5. [PMID: 22539201 DOI: 10.1002/anie.201108914] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2011] [Revised: 03/13/2012] [Indexed: 11/06/2022]
Affiliation(s)
- Hiroyuki Matsukizono
- Synthetic Chemistry Lab., Kawamura Institute of Chemical Research, 631 Sakado, Sakura, 285-0078 Japan
| | | |
Collapse
|
136
|
Matsukizono H, Jin RH. High-Temperature-Resistant Chiral Silica Generated on Chiral Crystalline Templates at Neutral pH and Ambient Conditions. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201108914] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
137
|
Fang D, Pan C, Lin H, Lin Y, Xu G, Zhang G, Wang H, Xie L, Zhang R. Ubiquitylation functions in the calcium carbonate biomineralization in the extracellular matrix. PLoS One 2012; 7:e35715. [PMID: 22558208 PMCID: PMC3338455 DOI: 10.1371/journal.pone.0035715] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Accepted: 03/20/2012] [Indexed: 11/18/2022] Open
Abstract
Mollusks shell formation is mediated by matrix proteins and many of these proteins have been identified and characterized. However, the mechanisms of protein control remain unknown. Here, we report the ubiquitylation of matrix proteins in the prismatic layer of the pearl oyster, Pinctada fucata. The presence of ubiquitylated proteins in the prismatic layer of the shell was detected with a combination of western blot and immunogold assays. The coupled ubiquitins were separated and identified by Edman degradation and liquid chromatography/mass spectrometry (LC/MS). Antibody injection in vivo resulted in large amounts of calcium carbonate randomly accumulating on the surface of the nacreous layer. These ubiquitylated proteins could bind to specific faces of calcite and aragonite, which are the two main mineral components of the shell. In the in vitro calcium carbonate crystallization assay, they could reduce the rate of calcium carbonate precipitation and induce the calcite formation. Furthermore, when the attached ubiquitins were removed, the functions of the EDTA-soluble matrix of the prismatic layer were changed. Their potency to inhibit precipitation of calcium carbonate was decreased and their influence on the morphology of calcium carbonate crystals was changed. Taken together, ubiquitylation is involved in shell formation. Although the ubiquitylation is supposed to be involved in every aspect of biophysical processes, our work connected the biomineralization-related proteins and the ubiquitylation mechanism in the extracellular matrix for the first time. This would promote our understanding of the shell biomineralization and the ubiquitylation processes.
Collapse
Affiliation(s)
- Dong Fang
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Cong Pan
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Huijuan Lin
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Ya Lin
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Guangrui Xu
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University, Beijing, China
| | - Guiyou Zhang
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University, Beijing, China
- Protein Science Laboratory of the Ministry of Education, Tsinghua University, Beijing, China
| | - Hongzhong Wang
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University, Beijing, China
- Protein Science Laboratory of the Ministry of Education, Tsinghua University, Beijing, China
| | - Liping Xie
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University, Beijing, China
- Protein Science Laboratory of the Ministry of Education, Tsinghua University, Beijing, China
- * E-mail: (LX); (RZ)
| | - Rongqing Zhang
- Institute of Marine Biotechnology, School of Life Sciences, Tsinghua University, Beijing, China
- Protein Science Laboratory of the Ministry of Education, Tsinghua University, Beijing, China
- * E-mail: (LX); (RZ)
| |
Collapse
|
138
|
Andre R, Tahir MN, Natalio F, Tremel W. Bioinspired synthesis of multifunctional inorganic and bio-organic hybrid materials. FEBS J 2012; 279:1737-49. [DOI: 10.1111/j.1742-4658.2012.08584.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
139
|
Marshall KE, Robinson EW, Hengel SM, Paša-Tolić L, Roesijadi G. FRET imaging of diatoms expressing a biosilica-localized ribose sensor. PLoS One 2012; 7:e33771. [PMID: 22470473 PMCID: PMC3309933 DOI: 10.1371/journal.pone.0033771] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2011] [Accepted: 02/21/2012] [Indexed: 11/18/2022] Open
Abstract
Future materials are envisioned to include bio-assembled, hybrid, three-dimensional nanosystems that incorporate functional proteins. Diatoms are amenable to genetic modification for localization of recombinant proteins in the biosilica cell wall. However, the full range of protein functionalities that can be accommodated by the modified porous biosilica has yet to be described. Our objective was to functionalize diatom biosilica with a reagent-less sensor dependent on ligand-binding and conformational change to drive FRET-based signaling capabilities. A fusion protein designed to confer such properties included a bacterial periplasmic ribose binding protein (R) flanked by CyPet (C) and YPet (Y), cyan and yellow fluorescent proteins that act as a FRET pair. The structure and function of the CRY recombinant chimeric protein was confirmed by expression in E. coli prior to transformation of the diatom Thalassiosira pseudonana. Mass spectrometry of the recombinant CRY showed 97% identity with the deduced amino acid sequence. CRY with and without an N-terminal Sil3 tag for biosilica localization exhibited characteristic ribose-dependent changes in FRET, with similar dissociation constants of 123.3 µM and 142.8 µM, respectively. The addition of the Sil3 tag did not alter the affinity of CRY for the ribose substrate. Subsequent transformation of T. pseudonana with a vector encoding Sil3-CRY resulted in fluorescence localization in the biosilica and changes in FRET in both living cells and isolated frustules in response to ribose. This work demonstrated that the nano-architecture of the genetically modified biosilica cell wall was able to support the functionality of the relatively complex Sil3-CyPet-RBP-YPet fusion protein with its requirement for ligand-binding and conformational change for FRET-signal generation.
Collapse
Affiliation(s)
- Kathryn E. Marshall
- Marine Biotechnology, Marine Sciences Laboratory, Pacific Northwest National Laboratory, Sequim, Washington, United States of America
| | - Errol W. Robinson
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington, United States of America
| | - Shawna M. Hengel
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington, United States of America
| | - Ljiljana Paša-Tolić
- Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, Washington, United States of America
| | - Guritno Roesijadi
- Marine Biotechnology, Marine Sciences Laboratory, Pacific Northwest National Laboratory, Sequim, Washington, United States of America
- * E-mail:
| |
Collapse
|
140
|
Galloway JM, Staniland SS. Protein and peptide biotemplated metal and metal oxide nanoparticles and their patterning onto surfaces. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm31620j] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
141
|
Wu R, Li Y, Wang Q, Yu J, Jiang F, Wang F, Zhang X. Biosilica structures with controllable morphology produced by an electrochemical process on indium tin oxide surfaces. RSC Adv 2012. [DOI: 10.1039/c2ra21326e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
142
|
Xu S, Sun C, Guo J, Xu K, Wang C. Biopolymer-directed synthesis of high-surface-area magnetite colloidal nanocrystal clusters for dual drug delivery in prostate cancer. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm34877b] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|
143
|
Li N, Zhang X, Wang Q, Wang F, Shen P. Biomimetic synthesis of silica hollow spheres using poly (l-lysine) and mechanism research. RSC Adv 2012. [DOI: 10.1039/c2ra00019a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
144
|
Yuan JJ, Jin RH. Temporally and spatially controlled silicification for self-generating polymer@silica hybrid nanotube on substrates with tunable film nanostructure. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm15993g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
145
|
Eby DM, Artyushkova K, Paravastu AK, Johnson GR. Probing the molecular structure of antimicrobial peptide-mediated silica condensation using X-ray photoelectron spectroscopy. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm30837a] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
146
|
Wang Q, Yu J, Yan Y, Xu S, Wang F, Li Q, Wang J, Zhang X, Liu D. Controlled biomimetic silica formation using star-shaped poly(l-lysine). Polym Chem 2012. [DOI: 10.1039/c2py20070h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
147
|
Patwardhan SV, Tilburey GE, Perry CC. Interactions of amines with silicon species in undersaturated solutions leads to dissolution and/or precipitation of silica. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:15135-45. [PMID: 22085267 DOI: 10.1021/la204180r] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The biogeochemical silicon cycle is the focus for many researchers studying the dissolution of silicon species from quartz, amorphous, and biogenic silica. Furthermore, the precipitation of biogenic silica by diatoms, radiolarian, sponges, and plants is also a popular focus for research. The ornate silica structures created by these species has attracted interest from biomaterial scientists and biochemists who have studied mineral formation in an attempt to understand how biogenic silica is formed, often in the presence of proteins and long chain polyamines. This article is at the interface of these seemingly distinct research areas. Here we investigate the effect of a range of amines in globally undersaturated silicon environments. Results are presented on the effect of amine-containing molecules on the formation of silica from undersaturated solutions of orthosilicic acid and globally undersaturated silicon environments. We sought to address two questions: can silica be precipitated/harvested from undersaturated solutions, and can we identify the silicon species that are most active in silica formation? We demonstrate that none of the bioinspired additives investigated here (e.g., poly(allylamine hydrochloride), pentaethylenehexamine, and propylamines) have any influence on orthosilicic acid at undersaturated concentrations. However, under globally undersaturated silicon concentrations, small molecules and polymers containing amine groups were able to interact with oligomers of silicic acid to either generate aggregated materials that can be isolated from solution or increase rates of oligomer dissolution back to orthosilicic acid. Additional outcomes of this study include an extended understanding of how polyelectrolytes and small molecules can promote and/or inhibit silica dissolution and a new method to explore how (bio)organic molecules interact with a forming mineral phase.
Collapse
Affiliation(s)
- Siddharth V Patwardhan
- Biomolecular and Materials Interface Research Group, School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK
| | | | | |
Collapse
|
148
|
Heinemann S, Heinemann C, Jäger M, Neunzehn J, Wiesmann HP, Hanke T. Effect of silica and hydroxyapatite mineralization on the mechanical properties and the biocompatibility of nanocomposite collagen scaffolds. ACS APPLIED MATERIALS & INTERFACES 2011; 3:4323-4331. [PMID: 21942510 DOI: 10.1021/am200993q] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A recently established materials concept of biomimetic composites based on silica, collagen, and calcium phosphates was adapted for the preparation of porous scaffolds suitable for tissue engineering applications. Mineralization was achieved by directed nucleation of silica on the templating organic phase during a sol-gel process with or without addition of hydroxyapatite. Both mineral phases (25 wt %, individually or combined in equal shares) influenced the scaffold's morphology at the nanoscale. Enhancement of apparent density and compressive strength was similar for silica or hydroxyapatite mineralization; however the stiffening effect of hydroxyapatite was much higher. All scaffold modifications provided proper conditions for adhesion, proliferation, and osteogenic differentiation of human bone marrow stromal cells. The open porosity allowed cells to migrate throughout the scaffolds while maintaining their viability, both confirmed by MTT staining and confocal laser scanning microscopy. Initial cell distributions were graduated due to collagen mineralization, but balanced out over the cultivation time of 28 days. RT-PCR analyses revealed higher gene expression of ALP but lower expression of BSP II and osteocalcin because of collagen mineralization. The results demonstrate that both silica and hydroxyapatite offer comparable possibilities to tailor mechanical properties of collagen-based scaffolds without being detrimental to in vitro biocompatibility.
Collapse
Affiliation(s)
- S Heinemann
- Max Bergmann Center of Biomaterials and Institute of Materials Science, Technische Universität Dresden, Budapester Strasse 27, D-01069 Dresden, Germany.
| | | | | | | | | | | |
Collapse
|