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Ikeda T, Nakasugi Y, Nakagawa M, Matsuura SI, Ikeda T, Ishida T, Funabashi H, Hirota R, Kuroda A. Discovery of long-chain polyamines embedded in the biosilica on the Bacillus cereus spore coat. J Biosci Bioeng 2024; 137:254-259. [PMID: 38342665 DOI: 10.1016/j.jbiosc.2024.01.012] [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: 11/07/2023] [Revised: 01/15/2024] [Accepted: 01/16/2024] [Indexed: 02/13/2024]
Abstract
Biosilicification is the process by which organisms incorporate soluble, monomeric silicic acid, Si(OH)4, in the form of polymerized insoluble silica, SiO2. Although the mechanisms underlying eukaryotic biosilicification have been intensively investigated, prokaryotic biosilicification has only recently begun to be studied. We previously reported that biosilicification occurs in the gram-positive, spore-forming bacterium Bacillus cereus, and that silica is intracellularly deposited on the spore coat as a protective coating against acids, although the underlying mechanism is not yet fully understood. In eukaryotic biosilicifying organisms, such as diatoms and siliceous sponges, several relevant biomolecules are embedded in biogenic silica (biosilica). These biomolecules include peptides, proteins, and long-chain polyamines. In this study, we isolated organic compounds embedded in B. cereus biosilica to investigate the biomolecules involved in the prokaryotic biosilicification process and identified long-chain polyamines with a chemical structure of H2N-(CH2)4-[NH-(CH2)3]n-NH2 (n: up to 55). Our results demonstrate the common presence of long-chain polyamines in different evolutionary lineages of biosilicifying organisms, i.e., diatoms, siliceous sponges, and B. cereus, suggesting a common mechanism underlying eukaryotic and prokaryotic biosilicification.
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Affiliation(s)
- Takeshi Ikeda
- Unit of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan.
| | - Yukihide Nakasugi
- Unit of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan
| | - Miki Nakagawa
- Unit of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan
| | - Shun-Ichi Matsuura
- Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1 Nigatake, Miyagino-ku, Sendai, Miyagi 983-8551, Japan
| | - Takuji Ikeda
- Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1 Nigatake, Miyagino-ku, Sendai, Miyagi 983-8551, Japan
| | - Takenori Ishida
- Unit of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan
| | - Hisakage Funabashi
- Unit of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan
| | - Ryuichi Hirota
- Unit of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan
| | - Akio Kuroda
- Unit of Biotechnology, Graduate School of Integrated Sciences for Life, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8530, Japan
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2
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Makihara Y, Maeda B, Akiyoshi R, Tanaka D, Murakami K. Functionalized Polyamine Synthesis with Photoredox Catalysis. Chemistry 2024; 30:e202304374. [PMID: 38267374 DOI: 10.1002/chem.202304374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/24/2024] [Accepted: 01/24/2024] [Indexed: 01/26/2024]
Abstract
Polyamines, such as putrescine and spermidine, are pivotal in various biological processes across living organisms. Despite their significance, structurally modified polyamines offer a less-explored avenue for discovering bioactive compounds. The limitation is attributed to the synthetic difficulty of accessing functionalized polyamines. In this study, we accomplished photoredox-catalyzed functionalization of polyamines to diversify their structure. The rapid functionalization allows attaching fluorophores to the target polyamine, facilitating the development of molecular probes for advancing chemical biology studies.
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Affiliation(s)
- Yuta Makihara
- Department of Chemistry, School of Science, Kwansei Gakuin University, Gakuen Uegahara 1, Sanda, Hyogo, 669-1330, Japan
| | - Bumpei Maeda
- Department of Chemistry, School of Science, Kwansei Gakuin University, Gakuen Uegahara 1, Sanda, Hyogo, 669-1330, Japan
| | - Ryohei Akiyoshi
- Department of Chemistry, School of Science, Kwansei Gakuin University, Gakuen Uegahara 1, Sanda, Hyogo, 669-1330, Japan
| | - Daisuke Tanaka
- Department of Chemistry, School of Science, Kwansei Gakuin University, Gakuen Uegahara 1, Sanda, Hyogo, 669-1330, Japan
| | - Kei Murakami
- Department of Chemistry, School of Science, Kwansei Gakuin University, Gakuen Uegahara 1, Sanda, Hyogo, 669-1330, Japan
- JST-PRESTO, 7 Gobancho, Chiyoda, Tokyo, 102-0076, Japan
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3
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Schwarz P, Steinem C. The role of the transmembrane domain of silicanin-1: Reconstitution of the full-length protein in artificial membranes. BIOCHIMICA ET BIOPHYSICA ACTA. BIOMEMBRANES 2022; 1864:183921. [PMID: 35367203 DOI: 10.1016/j.bbamem.2022.183921] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 03/24/2022] [Accepted: 03/24/2022] [Indexed: 06/14/2023]
Abstract
Biosilica formation in diatoms is a membrane-confined process that occurs in so-called silica deposition vesicles (SDVs). As SDVs have as yet not been successfully isolated, the impact of the SDV membrane on silica morphogenesis is not well understood. However, recently the first SDV transmembrane protein, silicanin-1 (Sin1) has been identified that appears to be involved in biosilica formation. In this study, we recombinantly expressed and isolated full-length Sin1 from E. coli and investigated its reconstitution behavior in artificial membranes. A reconstitution efficiency in vesicles of up to 80% was achieved by a co-micellization method. By using a chymotrypsin digest, the orientation of Sin1 in unilamellar vesicles was analyzed indicating a positioning of the large N-terminal domain to the outside of the vesicles. These proteoliposomes were capable of precipitating silica in the presence of long-chain polyamines. Supported lipid bilayers were produced by proteoliposome spreading on lipid monolayers to form continuous lipid bilayers with Sin1 confined to the membrane. Successful Sin1 reconstitution into these planar membranes was shown by means of immunostaining with purified primary anti-Sin1 and secondary fluorescent antibodies. The established planar model membrane system, amenable for surface sensitive and microscopy techniques, will pave the way to investigate SDV-membrane interactions with other SDV associated biomolecules and its role in silica biogenesis.
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Affiliation(s)
- Philipp Schwarz
- Institut für Organische und Biomolekulare Chemie, Universität Göttingen, Tammannstr. 2, 37077 Göttingen, Germany
| | - Claudia Steinem
- Institut für Organische und Biomolekulare Chemie, Universität Göttingen, Tammannstr. 2, 37077 Göttingen, Germany; Göttinger Zentrum für Molekulare Biowissenschaften (GZMB), Universität Göttingen, Justus-von-Liebig-Weg 11, 37077 Göttingen, Germany.
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4
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Daus F, Xie X, Geyer A. The silica mineralisation properties of synthetic Silaffin-1A 1 ( synSil-1A 1). Org Biomol Chem 2022; 20:3387-3396. [PMID: 35362502 DOI: 10.1039/d2ob00390b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthetic monodisperse pentadecapeptide synSil-1A1 is a representative of the microdisperse mixture of the native silaffin natSil-1A1 produced by the diatom Cylindrotheca fusiformis. The octaphosphorylated zwitterionic synSil-1A1 is able to mineralise silica under slightly acidic conditions at pH 5.5, which is the physiologically relevant pH range assumed. Like the posttranslational modifications of the native silaffins, synSil-1A1 is functionalised on all four lysine and phosphorylated on all seven serine residues. We describe the synthesis of a trimethyl-δ-hydroxy-L-lysine building block, the incorporation of this choline-type amino acid in peptide synthesis and its phosphorylation, together with all further posttranslational modifications observed in the native silaffins. Quantitative structure-activity relationships from silicification experiments at high dilution reveal the unique mineralisation properties of the hyperphosphorylated peptide as a single substance and in interaction with long-chain polyamines (LCPA). Diffusion-ordered spectroscopy (DOSY) experiments reveal the formation of polyelectrolyte complexes (PEC) between synSil-1A1 and long-chain polyamines, which promotes the silicification process. The microdroplets have an overall balanced ratio of 100-150 cationic and the same number of anionic charges. The unique zwitterionic synSil-1A1 confirms the prevailing molecular model of biosilicification and validates it with quantitative data based on a single phosphopeptide species, avoiding the usual unphysiologically high concentrations of phosphate of many previous in vitro silicification experiments.
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Affiliation(s)
- Fabian Daus
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany.
| | - Xiulan Xie
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany.
| | - Armin Geyer
- Department of Chemistry, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany.
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Zhang J, Ji Y, Wang Z, Jia Y, Zhu Q. Effective improvements to the live-attenuated Newcastle disease virus vaccine by polyethylenimine-based biomimetic silicification. Vaccine 2022; 40:886-896. [PMID: 34991927 DOI: 10.1016/j.vaccine.2021.12.054] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 12/20/2021] [Accepted: 12/23/2021] [Indexed: 10/19/2022]
Abstract
Live and killed vaccines impart a significant role in preventing of Newcastle disease (ND) in China. Vaccine efficacy could be ameliorated by improving vaccine-induced cellular immunity and antibody persistency. Previous studies substantiated the potency of silicon dioxide (SiO2) in the control-release of drugs and as a vaccine adjuvant, and polyethylenimine (PEI) merits as a mucosal adjuvanticity with electro-positivity. The present study employed SiO2 and PEI to prepare biomimetic silicon mineralized nanoparticle G7M@SiO2-PEI and microparticle (SiO2 + PEI)@G7M vaccines of G7M, a candidate for live attenuated vaccine of genotype VII Newcastle disease virus (NDV). The zeta potential experiment confirmed the significant increase in the average zeta potential of the nanoparticle G7M@SiO2-PEI and microparticle (SiO2 + PEI)@G7M relative to G7M before mineralization. The results of RT-qPCR revealed more than 99% mineralization efficiency of the G7M@SiO2-PEI and (SiO2 + PEI)@G7M. The morphology detected by transmission electron microscopy reported that the diameters of G7M@SiO2-PEI were similar to those of G7M, while for (SiO2 + PEI)@G7M, it was about five times larger than that of G7M. Silicon was detected on the surface of both mineralization particles, except for G7M, as observed from the elemental distribution detected by elemental mapping and energy dispersive X-ray spectrogram. Indirect immunofluorescence assays validated that mineralization virus have replicated ability in BHK-21F cells. In vivo experiments revealed higher than 5.50 log2 of antibody in nanoparticles G7M@SiO2-PEI group until 10-week post-vaccination, and significant proliferation of antigen-specific CD3+CD4+ in nanoparticles G7M@SiO2-PEI immunized group corroborated improved cellular immune responses. Vaccines provided full protection to the immunized chickens, whereas all the chickens receiving mock immunizations succumbed to the disease. Overall, our study concluded the efficacy of biomimetic mineralization of live attenuated vaccine in nanoparticles to improve humoral and cellular immune responses.
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Affiliation(s)
- Jinjin Zhang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, PR China
| | - Yanhong Ji
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, PR China
| | - Zhengxiang Wang
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, PR China
| | - Yane Jia
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, PR China
| | - Qiyun Zhu
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou 730046, PR China.
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6
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Chain length of bioinspired polyamines affects size and condensation of monodisperse silica particles. Commun Chem 2021; 4:160. [PMID: 36697574 PMCID: PMC9814531 DOI: 10.1038/s42004-021-00595-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Accepted: 10/22/2021] [Indexed: 01/28/2023] Open
Abstract
Polyamines play a major role in biosilicification reactions in diatoms and sponges. While the effects of polyamines on silicic acid oligomerization and precipitation are well known, the impact of polyamines chain length on silica particle growth is unclear. We studied the effects of polyamine chain length on silica particle growth and condensation in a known, simple, and salt-free biphasic reaction system; with tetraethyl orthosilicate as organic phase and polyamine dissolved in the aqueous phase. The particles at various growth stages were characterized by Cryo- Transmission Electron Microscopy, Scanning Electron Microscopy, Thermogravimetric Analysis, Zeta Potential, and solid-state NMR analysis. Polyamines were found co-localized within silica particles and the particle diameter increased with an increase in polyamine chain length, whereas silica condensation showed the opposite trend. Particle growth is proposed to progress via a coacervate intermediate while the final particles have a core shell structure with an amine-rich core and silica-rich shell. The results presented in this paper would of interest for researchers working in the field of bioinspired materials.
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7
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Sun X, Yu X, Cheng F, He W. Cationic polymeric template-mediated preparation of silica nanocomposites. SOFT MATTER 2021; 17:8995-9007. [PMID: 34611687 DOI: 10.1039/d1sm00773d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Biosilicification allows the formation of complex and delicate biogenic silica in near-neutral solutions under ambient conditions. Studies have revealed that, during biosilicification, basic amino acid residues and long-chain polyamines of organic substrates interact electrostatically with negatively charged silicate precursors in solution, catalyzing the polycondensation of silicic acid and accelerating the formation of silica. This mechanism has inspired researchers to explore polymers bearing chemical similarity with these organic matrices as cationic templates for biomimetic silicification. Such templates can be classified into two general categories based on the physical forms applied. One is a solution of water-soluble cationic polymers, either natural or synthetic, used as is for silicification. The other category includes various microscopically shaped entities made of cationic polymer-containing molecules, in the form of micelles, vesicles, crystalline aggregates, latex particles, and microgels. Combined with controlled polymerization and other techniques, these preorganized templates can be tailor designed in terms of sizes and morphologies to allow further expansion of properties and functions. In this review, notable research progress for both categories of silicification under biomimetic conditions is discussed. With the merits of silica and cationic polymers seamlessly integrated, the potential of such versatile nanocomposites in biomedical as well as energy and environmental applications is also briefly highlighted.
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Affiliation(s)
- Xiaoning Sun
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116023, China.
- School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116023, China
| | - Xueying Yu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116023, China.
- School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116023, China
| | - Fang Cheng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116023, China.
- School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116023, China
| | - Wei He
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, Liaoning, 116023, China.
- School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning, 116023, China
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8
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Bialas F, Reichinger D, Becker CF. Biomimetic and biopolymer-based enzyme encapsulation. Enzyme Microb Technol 2021; 150:109864. [DOI: 10.1016/j.enzmictec.2021.109864] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Revised: 06/02/2021] [Accepted: 06/29/2021] [Indexed: 12/25/2022]
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Jiang Q, Wu L, Zheng Y, Xia X, Zhang P, Lu T, Li J. Biomimetic micellar mesoporous silica xerogel performs superior nitrendipine dissolution, systemic stability and cellular transmembrane transport. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 118:111372. [PMID: 33254988 DOI: 10.1016/j.msec.2020.111372] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 04/07/2020] [Accepted: 07/20/2020] [Indexed: 11/26/2022]
Abstract
To combine the advantages of micelles and biomimetic silica materials, biomimetic micellar mesoporous silica xerogel (BM-SX) was initially established, biomimetic silica xerogel (B-SX) was also studied as control and nitrendipine (NDP) was taken as model drug. The content mainly focused on drug dissolution, systemic stability and cellular transmembrane transport of NDP loaded B-SX and NDP loaded BM-SX. With extra mesopores formed due to HPMC E50 micelles, the mean pore diameter, surface area and pore volume of BM-SX were all larger than B-SX. After loading NDP into the two carriers, crystal NDP changed to amorphous phase, leading to enhanced NDP dissolution. BM-SX presented superior abilities not only for its higher drug dissolution compared to B-SX but also for its capacity in remaining high amorphous drug phase and therefore no drug dissolution reduction can be observed. The dynamic contact angle result confirmed the strong power of HPMC E50 micelles in maintaining amorphous NDP in the carrier to improve high systemic stability. Both B-SX and BM-SX could increase drug absorption permeability and exert function as drug efflux inhibitor to inhibit the efflux effect of p-gp drug pump and promote NDP absorption and transport, and BM-SX was superior owing to micelles in the system.
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Affiliation(s)
- Qiankun Jiang
- School of Pharmacy, Shenyang Medical College, Shenyang, China
| | - Lingqiong Wu
- School of Pharmacy, Shenyang Medical College, Shenyang, China
| | - Yue Zheng
- School of Pharmacy, Shenyang Medical College, Shenyang, China
| | - Xiaojie Xia
- School of Pharmacy, Shenyang Medical College, Shenyang, China
| | - Ping Zhang
- School of Pharmacy, Shenyang Medical College, Shenyang, China
| | - Tong Lu
- School of Pharmacy, Shenyang Medical College, Shenyang, China
| | - Jing Li
- School of Pharmacy, Shenyang Medical College, Shenyang, China.
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10
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Buckle EL, Sampath J, Michael N, Whedon SD, Leonen CJA, Pfaendtner J, Drobny GP, Chatterjee C. Trimethylation of the R5 Silica-Precipitating Peptide Increases Silica Particle Size by Redirecting Orthosilicate Binding. Chembiochem 2020; 21:3208-3211. [PMID: 32596917 PMCID: PMC8604655 DOI: 10.1002/cbic.202000264] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/27/2020] [Indexed: 12/29/2022]
Abstract
The unmodified R5 peptide from silaffin in the diatom Cylindrotheca fusiformis rapidly precipitates silica particles from neutral aqueous solutions of orthosilicic acid. A range of post-translational modifications found in R5 contribute toward tailoring silica morphologies in a species-specific manner. We investigated the specific effect of R5 lysine side-chain trimethylation, which adds permanent positive charges, on silica particle formation. Our studies revealed that a doubly trimethylated R5K3,4me3 peptide has reduced maximum activity yet, surprisingly, generates larger silica particles. Molecular dynamics simulations of R5K3,4me3 binding by the precursor orthosilicate anion revealed that orthosilicate preferentially associates with unmodified lysine side-chain amines and the peptide N terminus. Thus, larger silica particles arise from reduced orthosilicate association with trimethylated lysine side chains and their redirection to the N terminus of the R5 peptide.
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Affiliation(s)
- Erika L Buckle
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Janani Sampath
- Department of Chemical Engineering, University of Washington, Seattle, WA, 98195, USA
| | - Nina Michael
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Samuel D Whedon
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Calvin J A Leonen
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Jim Pfaendtner
- Department of Chemical Engineering, University of Washington, Seattle, WA, 98195, USA
| | - Gary P Drobny
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
| | - Champak Chatterjee
- Department of Chemistry, University of Washington, Seattle, WA, 98195, USA
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11
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Montagna M, Brückner SI, Dianat A, Gutierrez R, Daus F, Geyer A, Brunner E, Cuniberti G. Interactions of Long-Chain Polyamines with Silica Studied by Molecular Dynamics Simulations and Solid-State NMR Spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:11600-11609. [PMID: 32924496 DOI: 10.1021/acs.langmuir.0c02157] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
The investigation of molecular interactions between silica phases and organic components is crucial for elucidating the main steps involved in the biosilica mineralization process. In this respect, the structural characterization of the organic/inorganic interface is particularly useful for a deeper understanding of the dominant mechanisms of biomineralization. In this work, we have investigated the interaction of selectively 13C- and 15N-labeled atoms of organic long-chain polyamines (LCPAs) with 29Si-labeled atoms of a silica layer at the molecular level. In particular, silica/LCPA nanocomposites were analyzed by solid-state NMR spectroscopy in combination with all-atom molecular dynamics simulations. Solid-state NMR experiments allow the determination of 29Si-15N and 29Si-13C internuclear distances, providing the parameters for direct verification of atomistic simulations. Our results elucidate the relevant molecular conformations as well as the nature of the interaction between the LCPA and a silica substrate. Specifically, distances and second moments suggest a picture compatible with (i) LCPA completely embedded in the silica phase and (ii) the charged amino groups located in close vicinity of silanol groups.
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Affiliation(s)
- Maria Montagna
- Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden, Germany
| | - Stephan Ingmar Brückner
- Chair of Bioanalytical Chemistry, Faculty of Chemistry and Food Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Arezoo Dianat
- Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden, Germany
| | - Rafael Gutierrez
- Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden, Germany
| | - Fabian Daus
- Department of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Armin Geyer
- Department of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße 4, 35032 Marburg, Germany
| | - Eike Brunner
- Chair of Bioanalytical Chemistry, Faculty of Chemistry and Food Chemistry, TU Dresden, 01062 Dresden, Germany
| | - Gianaurelio Cuniberti
- Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden, Germany
- Dresden Center for Computational Materials Science, TU Dresden, 01062 Dresden, Germany
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12
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Irie R, Miyahara M, Nakamura S, Honda A, Sakai R, Oikawa M. Total Synthesis of the Proposed Structure for Protoaculeine B, a Polycationic Marine Sponge Metabolite, with a Homogeneous Long-Chain Polyamine. JOURNAL OF NATURAL PRODUCTS 2020; 83:2769-2775. [PMID: 32869997 DOI: 10.1021/acs.jnatprod.0c00761] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
By establishing the procedures for sequential deprotections, reaction monitoring, purification, and handling, for the first time, we achieved the total synthesis of the proposed structure for protoaculeine B (2), which is a highly hydrophilic and polycationic amino acid. The NMR and mass spectra and chemical reactivity of the synthetic sample differed from those of natural protoaculeine B, which indicates the necessity for revision of the originally reported structure.
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Affiliation(s)
- Raku Irie
- Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027, Japan
| | - Masayoshi Miyahara
- Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027, Japan
| | - Shota Nakamura
- Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027, Japan
| | - Akito Honda
- Faculty of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Japan
| | - Ryuichi Sakai
- Faculty of Fisheries Sciences, Hokkaido University, Hakodate 041-8611, Japan
| | - Masato Oikawa
- Yokohama City University, Seto 22-2, Kanazawa-ku, Yokohama 236-0027, Japan
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13
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Nemoto M, Iwaki S, Moriya H, Monden Y, Tamura T, Inagaki K, Mayama S, Obuse K. Comparative Gene Analysis Focused on Silica Cell Wall Formation: Identification of Diatom-Specific SET Domain Protein Methyltransferases. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2020; 22:551-563. [PMID: 32488507 DOI: 10.1007/s10126-020-09976-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
Silica cell walls of diatoms have attracted attention as a source of nanostructured functional materials and have immense potential for a variety of applications. Previous studies of silica cell wall formation have identified numerous involved proteins, but most of these proteins are species-specific and are not conserved among diatoms. However, because the basic process of diatom cell wall formation is common to all diatom species, ubiquitous proteins and molecules will reveal the mechanisms of cell wall formation. In this study, we assembled de novo transcriptomes of three diatom species, Nitzschia palea, Achnanthes kuwaitensis, and Pseudoleyanella lunata, and compared protein-coding genes of five genome-sequenced diatom species. These analyses revealed a number of diatom-specific genes that encode putative endoplasmic reticulum-targeting proteins. Significant numbers of these proteins showed homology to silicanin-1, which is a conserved diatom protein that reportedly contributes to cell wall formation. These proteins also included a previously unrecognized SET domain protein methyltransferase family that may regulate functions of cell wall formation-related proteins and long-chain polyamines. Proteomic analysis of cell wall-associated proteins in N. palea identified a protein that is also encoded by one of the diatom-specific genes. Expression analysis showed that candidate genes were upregulated in response to silicon, suggesting that these genes play roles in silica cell wall formation. These candidate genes can facilitate further investigations of silica cell wall formation in diatoms.
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Affiliation(s)
- Michiko Nemoto
- Graduate School of Environmental and Life Science, Okayama University, Okayama, 700-8530, Japan.
| | - Sayako Iwaki
- Graduate School of Environmental and Life Science, Okayama University, Okayama, 700-8530, Japan
| | - Hisao Moriya
- Graduate School of Environmental and Life Science, Okayama University, Okayama, 700-8530, Japan
| | - Yuki Monden
- Graduate School of Environmental and Life Science, Okayama University, Okayama, 700-8530, Japan
| | - Takashi Tamura
- Graduate School of Environmental and Life Science, Okayama University, Okayama, 700-8530, Japan
| | - Kenji Inagaki
- Graduate School of Environmental and Life Science, Okayama University, Okayama, 700-8530, Japan
| | - Shigeki Mayama
- Department of Biology, Tokyo Gakugei University, Tokyo, 184-8511, Japan
| | - Kiori Obuse
- Graduate School of Environmental and Life Science, Okayama University, Okayama, 700-8530, Japan
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14
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Peptides from diatoms and grasses harness phosphate ion binding to silica to help regulate biomaterial structure. Acta Biomater 2020; 112:286-297. [PMID: 32434074 DOI: 10.1016/j.actbio.2020.05.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 05/01/2020] [Accepted: 05/05/2020] [Indexed: 01/08/2023]
Abstract
Many life forms generate intricate submicron biosilica structures with various important biological functions. The formation of such structures, from the silicic acid in the waters and in the soil, is thought to be regulated by unique proteins with high repeats of specific amino acids and unusual sidechain modifications. Some silicifying proteins are characterized by high prevalence of basic amino acids in their primary structures. Lysine-rich domains are found, for instance, in diatom silaffin proteins and in the sorghum grass siliplant1 protein. These domains exhibit catalytic activity in silica chain condensation, owing to molecular interactions of the lysine amine groups with the forming mineral. The use of amine chemistry by two very remote organisms has motivated us to seek other molecular biosilicification processes that may be common to the two life forms. In diatom silaffins, domains rich in phosphoserine residues are thought to assist the assembly of silaffin molecules into an organic supra-structure which serves as a template for the silica to precipitate on. This mold, held by salt bridges between serine phosphates and lysine amines, dictates the shape of the silica particles formed. Yet, silica synthesized with the dephosphorylated silaffin in phosphate buffer showed similar morphology to the one prepared with the native protein, suggesting that a defined spatial arrangement of serine phosphates is not required to generate silica with the desired shape. Concurrently, free phosphates enhanced the activity of siliplant1 in silica formation. It is therefore beneficial to characterize the involvement of these anions as co-factors in regulated silicification by functional peptides from the two proteins and to understand whether they play similar molecular role in the mechanism of mineralization. Here we analyze the molecular interactions of free phosphate ions with silica and the silaffin peptide PL12 and separately with silica and siliplant1 peptide SLP1 in the two biomimetic silica products generated by the two peptides. MAS NMR measurements show that the phosphate ions interact with the peptides and at the same time may be forming bonds with the silica mineral. This bridging capability may add another avenue by which the structure of the silica material is influenced. A model for the molecular/ionic interactions at the bio-inorganic interface is described, which may have bearings for the role of phosphorylated residues beyond the function as intermolecular cross linkers or free phosphate ions as co-factors in regulation of silicification. STATEMENT OF SIGNIFICANCE: The manuscript addresses the question how proteins in diatoms and plants regulate the biosilica materials that are produced for various purposes in organisms. It uses preparation of silica in vitro with functional peptide derivatives from a sorghum grass protein and from a diatom silaffin protein separately to show that phosphate ions are important for the control that is achieved by these proteins on the final shape of the silica material produced. It portrays via magnetic resonance spectroscopic measurements, in atomic detail, the interface between atoms in the peptide, atoms on the surface of the silica formed and the phosphate ions that form chemical bonds with atoms on the silica as part of the mechanism of action of these peptides.
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15
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Daus F, Pfeifer E, Seipp K, Hampp N, Geyer A. The role of phosphopeptides in the mineralisation of silica. Org Biomol Chem 2020; 18:700-706. [DOI: 10.1039/c9ob02438g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We describe the synthesis of hyperphosphorylated peptides and the investigation of theirin vitrosilicification activity in combination with long-chain polyamines (LCPA) at high dilution and mildly acidic conditions.
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Affiliation(s)
- Fabian Daus
- Department of Chemistry
- Philipps-Universität Marburg
- 35032 Marburg
- Germany
| | - Erik Pfeifer
- Department of Chemistry
- Philipps-Universität Marburg
- 35032 Marburg
- Germany
| | - Kevin Seipp
- Department of Chemistry
- Philipps-Universität Marburg
- 35032 Marburg
- Germany
| | - Norbert Hampp
- Department of Chemistry
- Philipps-Universität Marburg
- 35032 Marburg
- Germany
| | - Armin Geyer
- Department of Chemistry
- Philipps-Universität Marburg
- 35032 Marburg
- Germany
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16
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Sugawara-Narutaki A, Tsuboike S, Oda Y, Shimojima A, Landenberger KB, Okubo T, Aoshima S. Bioinspired Approach to Silica Nanoparticle Synthesis Using Amine-Containing Block Copoly(vinyl ethers): Realizing Controlled Anisotropy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10846-10854. [PMID: 31355647 DOI: 10.1021/acs.langmuir.9b01493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Core-shell polymer-silica hybrid nanoparticles smaller than 50 nm in diameter were formed in the presence of micelles of poly(2-aminoethyl vinyl ether-block-isobutyl vinyl ether) (poly(AEVEm-b-IBVEn)) through the hydrolysis and polycondensation of alkoxysilane in aqueous solution at a mild pH and temperature. The size of the nanoparticles as well as the number and size of the core parts were effectively controlled by varying the molecular weight of the copolymers. The polymers could be removed by calcination to give hollow silica nanoparticles with Brunauer-Emmett-Teller surface areas of more than 500 m2 g-1. Among these, silica nanoparticles formed with poly(AEVE115-b-IBVE40) displayed an anisotropy of single openings in the shell. The use of an alternative copolymer, poly(AEVE-b-2-naphthoxyethyl vinyl ether) (poly(AEVE113-b-βNpOVE40)), yielded core-shell nanoparticles with less pronounced anisotropy. These results showed that the degree of anisotropy could be controlled by the rigidity of micelles; the micelle of poly(AEVE115-b-IBVE40) was more deformable during silica deposition than that of poly(AEVE113-b-βNpOVE40) in which aromatic interactions were possible. This bioinspired, environmentally friendly approach will enable large-scale production of anisotropic silica nanomaterials, opening up applications in the field of nanomedicine, optical materials, and self-assembly.
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Affiliation(s)
- Ayae Sugawara-Narutaki
- Department of Materials Chemistry , Nagoya University , Furo-cho , Chikusa-ku, Nagoya 464-8603 , Japan
| | - Sachio Tsuboike
- Department of Chemical System Engineering , The University of Tokyo , Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
| | - Yukari Oda
- Department of Macromolecular Science , Osaka University , Machikaneyama , Toyonaka , Osaka 560-0043 , Japan
| | - Atsushi Shimojima
- Department of Applied Chemistry , Waseda University , Okubo-3 , Shinjuku-ku, Tokyo 169-8555 , Japan
- Kagami Memorial Research Institute for Materials Science and Technology , Waseda University , Nishiwaseda-2 , Shinjuku-ku, Tokyo 169-0051 , Japan
| | - Kira B Landenberger
- Department of Macromolecular Science , Osaka University , Machikaneyama , Toyonaka , Osaka 560-0043 , Japan
- Department of Polymer Chemistry , Kyoto University, Kyoto University Katsura , Nishikyo-ku, Kyoto 615-8510 , Japan
| | - Tatsuya Okubo
- Department of Chemical System Engineering , The University of Tokyo , Hongo , Bunkyo-ku, Tokyo 113-8656 , Japan
| | - Sadahito Aoshima
- Department of Macromolecular Science , Osaka University , Machikaneyama , Toyonaka , Osaka 560-0043 , Japan
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17
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Gulshan MA, Tsuji K, Matsumura S, Higuchi T, Umezawa N, Ikawa Y. Distinct modulation of group I ribozyme activity among stereoisomers of a synthetic pentamine with structural constraints. Biochem Biophys Res Commun 2018; 504:698-703. [PMID: 30213632 DOI: 10.1016/j.bbrc.2018.09.015] [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: 08/25/2018] [Accepted: 09/03/2018] [Indexed: 11/25/2022]
Abstract
Among cationic molecules that can modulate ribozyme activities, polyamines act as both activator and inhibitor of ribozyme reactions partly due to their structural flexibility. Restriction of structural flexibility of polyamines may allow them to emphasize particular modulation effects. We examined eight stereoisomers of a synthetic pentamine bearing three cyclopentane rings. In the reaction of a structurally unstable group I ribozyme, three stereoisomers exhibited distinct effects as inhibitor, an additive with a neutral effect, and also as an activator.
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Affiliation(s)
- Mst Ara Gulshan
- Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, Gofuku 3190, Toyama, 930-8555, Japan; Graduate School of Innovative Life Science, University of Toyama, Gofuku 3190, Toyama, 930-8555, Japan
| | - Kasumi Tsuji
- Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan
| | - Shigeyoshi Matsumura
- Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, Gofuku 3190, Toyama, 930-8555, Japan; Graduate School of Innovative Life Science, University of Toyama, Gofuku 3190, Toyama, 930-8555, Japan
| | - Tsunehiko Higuchi
- Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan
| | - Naoki Umezawa
- Graduate School of Pharmaceutical Sciences, Nagoya City University, Nagoya, 467-8603, Japan
| | - Yoshiya Ikawa
- Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, Gofuku 3190, Toyama, 930-8555, Japan; Graduate School of Innovative Life Science, University of Toyama, Gofuku 3190, Toyama, 930-8555, Japan.
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18
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Wang X, Xu L, Hao Y, Zhang J, Cui F, Cui T, Zhang Q. Self-catalytic Synthesis of CuO@SiO 2 Nanocomposites under Neutral Condition and Its Catalytic Performance. CHEM LETT 2018. [DOI: 10.1246/cl.170952] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaoqiang Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, P. R. China
| | - Linxu Xu
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, P. R. China
| | - Yanjun Hao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, P. R. China
| | - Jiajia Zhang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, P. R. China
| | - Fang Cui
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, P. R. China
| | - Tieyu Cui
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, P. R. China
| | - Qi Zhang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150080, P. R. China
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19
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Bauer CA, Chi G, Likens OQ, Brown SE. A convenient, bio-inspired approach to the synthesis of multi-functional, stable fluorescent silica nanoparticles using poly(ethylene-imine). NANOSCALE 2017; 9:6509-6520. [PMID: 28466935 DOI: 10.1039/c7nr00462a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Branched poly(ethylene-imine) can be tagged with luminescent dyes (e.g., fluorescein isothiocyanate and tetramethylrhodamine isothiocyanate) and used to precipitate spherical silica particles from 10s-to-100s of nm diameter size under mild conditions. These dye-PEI/SiO2 nanoparticles are highly compatible with polar solvents to give bright fluorescent suspensions, and detailed photophysical characterization reveals well-separated dye moieties with an approximately homogeneous dispersion of dye-PEI conjugate throughout the SiO2 matrix. Reaction of PEI amine groups incorporated at the particle surface affords a simple method for post-synthesis functionalization of these materials, and the formation of FITC/Eosin-Y fluorescence resonance energy transfer pair-tagged particles and SiO2@Au core-shell nanocomposites using this strategy is demonstrated. This bio-inspired approach to multi-functional SiO2 nanoparticles provides a range of potential advantages over traditional "inorganic" syntheses of similar materials, as it proceeds through a scalable, single-step reaction using inexpensive reagents, enables efficient incorporation of luminescent species into the resulting particles with very limited dye aggregation, and provides nanoparticles that do not require post-synthesis modification for further conjugation with species of interest. The method offers a simple means to generate complex nanocomposites, whereby a host of desired species can be incorporated both inside and on the surface of biocompatible SiO2 nanoparticles.
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20
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Abstract
The application of biocatalytic or chemoenzymatic techniques in silicon chemistry serves two roles: it provides a greater understanding of the processing of silicon species by natural systems, such as plants, diatoms, and sponges, as well opening up avenues to green methodologies in the field. In the latter case, biocatalytic approaches have been applied to the synthesis of small-molecule systems and polymeric materials. Often these biocatalytic approaches allow access to molecular structures under mild conditions and, in some cases, molecular structures that are not accessible through traditional chemical methodologies. A review of recent advances in the applications of biocatalysis in silicon chemistry is presented.
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Affiliation(s)
- Mark B Frampton
- School of Biosciences, Loyalist College, 376 Wallbridge-Loyalist Road, Belleville, ON, K89 5B9, Canada
| | - Paul M Zelisko
- Department of Chemistry and Centre for Biotechnology, Brock University, 1812 Sir Isaac Brock Way, St. Catharines, ON, L2S 3A1, Canada
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21
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Simultaneously achieve soluble expression and biomimetic immobilization of Candida antarctica lipase B by introducing polyamine tags. J Biotechnol 2017; 249:1-9. [DOI: 10.1016/j.jbiotec.2017.03.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 03/13/2017] [Indexed: 01/26/2023]
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22
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Xu L, Cui F, Zhang J, Hao Y, Wang Y, Cui T. Autocatalytic synthesis of multifunctional precursors for fabricating silica microspheres with well-dispersed Ag and Co 3O 4 nanoparticles. NANOSCALE 2017; 9:899-906. [PMID: 28000832 DOI: 10.1039/c6nr08309a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Herein, an autocatalytic route to fabricate dual metal ion-equipped organic/inorganic hybrid silica, an ideal precursor for multifunctional silica-based composites integrated with well-dispersed Ag and Co3O4 nanoparticles was demonstrated. Significantly, by rational selection of reactants, such dual metal ion-equipped organic/inorganic hybrid silica can be synthesized through successive spontaneous reactions under near neutral conditions without an additional catalyst. Both the Ag+ and Co2+ ions are introduced into silica by chemical bonds, which favor the formation of small-sized and well-dispersed Ag and Co3O4 nanoparticles without aggregation in the entire silica matrix. After calcination, multifunctional silica composites equipped with well-dispersed Ag and Co3O4 nanoparticles were obtained. The as-obtained silica composites, as indicated by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), have a spherical morphology and smooth surface. TEM tests also reveal the well dispersed fashion of Ag and Co3O4 nanoparticles. In addition, the obtained Ag-Co3O4@SiO2 composites exhibit good catalytic performance in the reduction of methylene blue (MB) with NaBH4 as a reducing agent, and can be readily recycled by an external magnetic field due to their superparamagnetic properties.
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Affiliation(s)
- Linxu Xu
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China.
| | - Fang Cui
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China.
| | - Jiajia Zhang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China.
| | - Yanjun Hao
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China.
| | - Yan Wang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China.
| | - Tieyu Cui
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China.
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23
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Lamping M, Grell Y, Geyer A. Synthesis and conformational analysis of an expanded cyclic ketoxime-hexapeptide. J Pept Sci 2016; 22:228-35. [PMID: 27028207 DOI: 10.1002/psc.2873] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 02/16/2016] [Accepted: 02/16/2016] [Indexed: 01/02/2023]
Abstract
In this work the synthesis of a linear hexapeptide with a hydroxylamine functionality at the N-terminus and a ketone instead of the carboxylic acid at the C-terminus is described. Cyclization by ketoxime formation yields the 19-membered ring-expanded cyclic hexapeptide cyclo[Goly-Val-Ala-Pro-Leu-Kly] which adopts a main conformer with two intramolecular hydrogen bonds. The hydrolytic stability of a ketoxime lies between the inert amide and the labile imine. The substitution of an amide bond for an iminium bond transforms the irreversible macrocyclization into a reversible process, but macrocyclic imines are difficult to isolate because they are prone to hydrolysis. The enhanced chemical stability of the ketoxime justifies its application in ligation protocols. The detailed NMR analysis of a ketoxime linkage presented here identifies its local conformational preferences in a constrained peptide environment.
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Affiliation(s)
- Matthias Lamping
- Institute of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße, 35032, Marburg, Germany
| | - Yvonne Grell
- Institute of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße, 35032, Marburg, Germany
| | - Armin Geyer
- Institute of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße, 35032, Marburg, Germany
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24
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Nojima T, Suzuki S, Iyoda T. Atelocollagen-templated fabrication of tangled fibrous silica. J Mater Chem B 2016; 4:6640-6643. [PMID: 32263518 DOI: 10.1039/c6tb01770c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Protein-templated structured silica and titania are fabricated via a biomimetic method based on the synergistic effect of amine/carboxyl complexes under ambient conditions. Atelocollagen-templated silica showed a tangled fibrous structure with a smooth surface. The number of carboxyl groups of a protein is an important factor for homogeneous silica growth.
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Affiliation(s)
- Tatsuya Nojima
- Iyoda Supra-integrated Material Project Exploratory Research for Advanced Technology (ERATO), Japan Science and Technology Agency (JST), 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8503, Japan.
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25
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Gräb O, Abacilar M, Daus F, Geyer A, Steinem C. 3D-Membrane Stacks on Supported Membranes Composed of Diatom Lipids Induced by Long-Chain Polyamines. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10144-10152. [PMID: 27603681 DOI: 10.1021/acs.langmuir.6b02575] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Long-chain polyamines (LCPAs) are intimately involved in the biomineralization process of diatoms taking place in silica deposition vesicles being acidic compartments surrounded by a lipid bilayer. Here, we addressed the question whether and how LCPAs interact with lipid membranes composed of glycerophospholipids and glyceroglycolipids mimicking the membranes of diatoms and higher plants. Solid supported lipid bilayers and monolayers containing the three major components that are unique in diatoms and higher plants, i.e., monogalactosyldiacylglycerol (MGDG), digalactosyldiacylglycerol (DGDG), and sulfoquinovosyldiacylglycerol (SQDG), were prepared by spreading small unilamellar vesicles. The integrity of the membranes was investigated by fluorescence microscopy and atomic force microscopy showing continuous flat bilayers and monolayers with small protrusions on top of the membrane. The addition of a synthetic polyamine composed of 13 amine groups separated by a propyl spacer (C3N13) results in flat but three-dimensional membrane stacks within minutes. The membrane stacks are connected with the underlying membrane as verified by fluorescence recovery after photobleaching experiments. Membrane stack formation was found to be independent of the lipid composition; i.e., neither glyceroglycolipids nor negatively charged lipids were required. However, the formation process was strongly dependent on the chain length of the polyamine. Whereas short polyamines such as the naturally occurring spermidine, spermine, and the synthetic polyamines C3N4 and C3N5 do not induce stack formation, those containing seven and more amine groups (C3N7, C3N13, and C3N18) do form membrane stacks. The observed stack formation might have implications for the stability and expansion of the silica deposition vesicle during valve and girdle band formation in diatoms.
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Affiliation(s)
- Oliver Gräb
- Institute of Organic and Biomolecular Chemistry, University of Göttingen , Tammannstr. 2, 37077 Göttingen, Germany
| | - Maryna Abacilar
- Faculty of Chemistry, Philipps-University Marburg , Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Fabian Daus
- Faculty of Chemistry, Philipps-University Marburg , Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Armin Geyer
- Faculty of Chemistry, Philipps-University Marburg , Hans-Meerwein-Str. 4, 35032 Marburg, Germany
| | - Claudia Steinem
- Institute of Organic and Biomolecular Chemistry, University of Göttingen , Tammannstr. 2, 37077 Göttingen, Germany
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26
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Hyde EDER, Seyfaee A, Neville F, Moreno-Atanasio R. Colloidal Silica Particle Synthesis and Future Industrial Manufacturing Pathways: A Review. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b01839] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Emily D. E. R. Hyde
- School of Engineering, and ‡School of Environmental
and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Ahmad Seyfaee
- School of Engineering, and ‡School of Environmental
and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Frances Neville
- School of Engineering, and ‡School of Environmental
and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia
| | - Roberto Moreno-Atanasio
- School of Engineering, and ‡School of Environmental
and Life Sciences, The University of Newcastle, Callaghan, NSW 2308, Australia
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27
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Yao DD, Kubosawa H, Souma D, Jin RH. Shaped crystalline aggregates of comb-like polyethyleneimine for biomimetic synthesis of inorganic silica materials. POLYMER 2016. [DOI: 10.1016/j.polymer.2016.01.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Hauser C, Wodtke R, Löser R, Pietsch M. A fluorescence anisotropy-based assay for determining the activity of tissue transglutaminase. Amino Acids 2016; 49:567-583. [PMID: 26886924 DOI: 10.1007/s00726-016-2192-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 02/02/2016] [Indexed: 01/10/2023]
Abstract
Tissue transglutaminase (TGase 2) is the most abundantly expressed enzyme of the transglutaminase family and involved in a large variety of pathological processes, such as neurodegenerative diseases, disorders related to autoimmunity and inflammation as well as tumor growth, progression and metastasis. As a result, TGase 2 represents an attractive target for drug discovery and development, which requires assays that allow for the characterization of modulating agents and are appropriate for high-throughput screening. Herein, we report a fluorescence anisotropy-based approach for the determination of TGase 2's transamidase activity, following the time-dependent increase in fluorescence anisotropy due to the enzyme-catalyzed incorporation of fluorescein- and rhodamine B-conjugated cadaverines 1-3 (acyl acceptor substrates) into N,N-dimethylated casein (acyl donor substrate). These cadaverine derivatives 1-3 were obtained by solid-phase synthesis. To allow efficient conjugation of the rhodamine B moiety, different linkers providing secondary amine functions, such as sarcosyl and isonipecotyl, were introduced between the cadaverine and xanthenyl entities in compounds 2 and 3, respectively, with acyl acceptor 3 showing the most optimal substrate properties of the compounds investigated. The assay was validated for the search of both irreversible and reversible TGase 2 inhibitors using the inactivators iodoacetamide and a recently published L-lysine-derived acrylamide and the allosteric binder GTP, respectively. In addition, the fluorescence anisotropy-based method was proven to be suitable for high-throughput screening (Z' factor of 0.86) and represents a non-radioactive and highly sensitive assay for determining the active TGase 2 concentration.
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Affiliation(s)
- Christoph Hauser
- Center of Pharmacology, Medical Faculty, University of Cologne, Gleueler Str. 24, 50931, Cologne, Germany
| | - Robert Wodtke
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstr. 400, 01328, Dresden, Germany
- Department of Chemistry and Food Chemistry, Technical University Dresden, Mommsenstraße 4, 01062, Dresden, Germany
| | - Reik Löser
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Radiopharmaceutical Cancer Research, Bautzner Landstr. 400, 01328, Dresden, Germany.
- Department of Chemistry and Food Chemistry, Technical University Dresden, Mommsenstraße 4, 01062, Dresden, Germany.
| | - Markus Pietsch
- Center of Pharmacology, Medical Faculty, University of Cologne, Gleueler Str. 24, 50931, Cologne, Germany.
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29
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Abacilar M, Daus F, Haas C, Brückner SI, Brunner E, Geyer A. Synthesis and NMR analysis of 13C and 15N-labeled long-chain polyamines (LCPAs). RSC Adv 2016. [DOI: 10.1039/c6ra19624a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Site specific isotope labels in long-chain polyamines (LCPAs) for the NMR analysis of bioinspired silica nanocomposites.
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Affiliation(s)
| | - Fabian Daus
- Fachbereich Chemie
- Philipps-University Marburg
- Marburg
- Germany
| | - Christian Haas
- Fachbereich Chemie
- Philipps-University Marburg
- Marburg
- Germany
| | | | - Eike Brunner
- Fachrichtung Chemie und Lebensmittelchemie, TU Dresden
- 01062 Dresden
- Germany
| | - Armin Geyer
- Fachbereich Chemie
- Philipps-University Marburg
- Marburg
- Germany
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30
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Hoshino T, Sato K, Oaki Y, Sugawara-Narutaki A, Shimizu K, Ozaki N, Imai H. Plant opal-mimetic bunching silica nanoparticles mediated by long-chain polyethyleneimine. RSC Adv 2016. [DOI: 10.1039/c5ra25742e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Plant opal-mimetic structures of bunching silica nanoparticles were produced through polymer-mediated polycondensation of hydrolyzed silicate species in a matrix of long-chain branched polyethyleneimine.
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Affiliation(s)
- Tomomi Hoshino
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama
- Japan
| | - Kanako Sato
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama
- Japan
| | - Yuya Oaki
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama
- Japan
| | - Ayae Sugawara-Narutaki
- Department of Crystalline Materials Science
- Graduate School of Engineering
- Nagoya University
- Nagoya 464-8603
- Japan
| | - Katsuhiko Shimizu
- Organization for Regional Industrial Academic Cooperation
- Tottori University
- Japan
- Japan Organization for Regional Industrial Academic Cooperation
- Tottori University
| | - Noriaki Ozaki
- Department of Biotechnology
- Faculty of Bioresource Sciences
- Akita Prefectural University
- Japan
| | - Hiroaki Imai
- Department of Applied Chemistry
- Faculty of Science and Technology
- Keio University
- Yokohama
- Japan
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31
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Cui F, Yu J, Cui T. Decoration of Silica with Tb 2O 3 Nanoparticles by a Facile Method Free of Additional Catalyst. CHEM LETT 2015. [DOI: 10.1246/cl.150722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Fang Cui
- The Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology
| | - Jing Yu
- The Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology
| | - Tieyu Cui
- The Academy of Fundamental and Interdisciplinary Science, Harbin Institute of Technology
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32
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Lechner CC, Becker CFW. Silaffins in Silica Biomineralization and Biomimetic Silica Precipitation. Mar Drugs 2015; 13:5297-333. [PMID: 26295401 PMCID: PMC4557024 DOI: 10.3390/md13085297] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2015] [Revised: 07/17/2015] [Accepted: 07/20/2015] [Indexed: 12/05/2022] Open
Abstract
Biomineralization processes leading to complex solid structures of inorganic material in biological systems are constantly gaining attention in biotechnology and biomedical research. An outstanding example for biomineral morphogenesis is the formation of highly elaborate, nano-patterned silica shells by diatoms. Among the organic macromolecules that have been closely linked to the tightly controlled precipitation of silica in diatoms, silaffins play an extraordinary role. These peptides typically occur as complex posttranslationally modified variants and are directly involved in the silica deposition process in diatoms. However, even in vitro silaffin-based peptides alone, with and without posttranslational modifications, can efficiently mediate biomimetic silica precipitation leading to silica material with different properties as well as with encapsulated cargo molecules of a large size range. In this review, the biomineralization process of silica in diatoms is summarized with a specific focus on silaffins and their in vitro silica precipitation properties. Applications in the area of bio- and nanotechnology as well as in diagnostics and therapy are discussed.
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Affiliation(s)
- Carolin C Lechner
- Swiss Federal Institute of Technology in Lausanne (EPFL), Fondation Sandoz Chair in Biophysical Chemistry of Macromolecules, 1015 Lausanne, Switzerland.
| | - Christian F W Becker
- Institute of Biological Chemistry, Department of Chemistry, University of Vienna, Währinger Straße 38, 1090 Vienna, Austria.
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33
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Han W, MacEwan SR, Chilkoti A, López GP. Bio-inspired synthesis of hybrid silica nanoparticles templated from elastin-like polypeptide micelles. NANOSCALE 2015; 7:12038-44. [PMID: 26114664 PMCID: PMC4499310 DOI: 10.1039/c5nr01407g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The programmed self-assembly of block copolymers into higher order nanoscale structures offers many attractive attributes for the development of new nanomaterials for numerous applications including drug delivery and biosensing. The incorporation of biomimetic silaffin peptides in these block copolymers enables the formation of hybrid organic-inorganic materials, which can potentially enhance the utility and stability of self-assembled nanostructures. We demonstrate the design, synthesis and characterization of amphiphilic elastin-like polypeptide (ELP) diblock copolymers that undergo temperature-triggered self-assembly into well-defined spherical micelles. Genetically encoded incorporation of the silaffin R5 peptide at the hydrophilic terminus of the diblock ELP leads to presentation of the silaffin R5 peptide on the coronae of the micelles, which results in localized condensation of silica and the formation of near-monodisperse, discrete, sub-100 nm diameter hybrid ELP-silica particles. This synthesis method, can be carried out under mild reaction conditions suitable for bioactive materials, and will serve as the basis for the development and application of functional nanomaterials. Beyond silicification, the general strategies described herein may also be adapted for the synthesis of other biohybrid nanomaterials as well.
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Affiliation(s)
- Wei Han
- Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708, USA.
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34
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Licsandru E, Petit E, Moldovan S, Ersen O, Barboiu M. Biomimetic Autocatalytic Synthesis of Organized Silica Hybrids. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500701] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Erol Licsandru
- Adaptive Supramolecular Nanosystems, Institut Europeen des Membranes, UMR‐CNRS 5635, ENSCM‐U, Place Eugene Bataillon CC047, 34095 Montpellier, France, http://www.nsa‐systems‐chemistry.fr
| | - Eddy Petit
- Adaptive Supramolecular Nanosystems, Institut Europeen des Membranes, UMR‐CNRS 5635, ENSCM‐U, Place Eugene Bataillon CC047, 34095 Montpellier, France, http://www.nsa‐systems‐chemistry.fr
| | - Simona Moldovan
- IPCMS‐Groupe Surfaces et Interfaces, CNRS‐ULP UMR 7504, 23 Rue du Loess BP 43, 67034 Strasbourg, France
| | - Ovidiu Ersen
- IPCMS‐Groupe Surfaces et Interfaces, CNRS‐ULP UMR 7504, 23 Rue du Loess BP 43, 67034 Strasbourg, France
| | - Mihail Barboiu
- Adaptive Supramolecular Nanosystems, Institut Europeen des Membranes, UMR‐CNRS 5635, ENSCM‐U, Place Eugene Bataillon CC047, 34095 Montpellier, France, http://www.nsa‐systems‐chemistry.fr
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35
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van de Put MWP, Patterson JP, Bomans PHH, Wilson NR, Friedrich H, van Benthem RATM, de With G, O'Reilly RK, Sommerdijk NAJM. Graphene oxide single sheets as substrates for high resolution cryoTEM. SOFT MATTER 2015; 11:1265-70. [PMID: 25516333 DOI: 10.1039/c4sm02587c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
CryoTEM is an important tool in the analysis of soft matter, where generally defocus conditions are used to enhance the contrast in the images, but this is at the expense of the maximum resolution that can be obtained. Here, we demonstrate the use of graphene oxide single sheets as support for the formation of 10 nm thin films for high resolution cryoTEM imaging, using DNA as an example. With this procedure, the overlap of objects in the vitrified film is avoided. Moreover, in these thin films less background scattering occurs and as a direct result, an increased contrast can be observed in the images. Hence, imaging closer to focus as compared with conventional cryoTEM procedures is achieved, without losing contrast. In addition, we demonstrate an ~1.8 fold increase in resolution, which is crucial for accurate size analysis of nanostructures.
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Affiliation(s)
- Marcel W P van de Put
- Laboratory of Materials and Interface Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
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36
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Abacilar M, Daus F, Geyer A. Chemoselective silicification of synthetic peptides and polyamines. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2015; 6:103-110. [PMID: 25671155 PMCID: PMC4311759 DOI: 10.3762/bjnano.6.10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Accepted: 12/03/2014] [Indexed: 05/31/2023]
Abstract
Biosilicification sets the standard for the localized in vitro precipitation of silica at low orthosilicate concentrations in aqueous environment under ambient conditions. Numerous parameters must be controlled for the development of new technologies in designing inventive nanosilica structures, which are able to challenge the biological templates. A long neglected requirement that came into focus in the recent years are the cellular techniques of preventing unintentional lithification of cellular structures since numerous cellular components such as membranes, DNA, and proteins are known to precipitate nanosilica. The diatom metabolism makes use of techniques that restrict silicification to an armor of silica around the cell wall while avoiding the petrifying gaze of Medusa, which turns the whole cell into stone. Step by step, biochemistry unveils the hierarchical interplay of an arsenal of low-molecular weight molecules, proteins, and the cytoskeletal architecture and it becomes clearer why the organisms invest much metabolic effort for an obviously simple chemical reaction like the precipitation of amorphous silica. The discrimination between different soluble components in the silicification process (chemoselective silicification) is not only vitally important for the diatom but poses an interesting challenge for in vitro experiments. Until now, silica precipitation studies were mainly focused on the amount, the morphology, and composition of the precipitate while disregarding a quantitative analysis of the remaining soluble components. Here, we turn the tables and quantify the soluble components by (1)H NMR in the progress of precipitation and present experiments which quantify the additivity, and potential cooperativity of long chain polyamines (LCPAs) and cationic peptides in the silicification process.
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Affiliation(s)
- Maryna Abacilar
- Faculty of Chemistry, Philipps-Universität Marburg, 35032 Marburg, Germany
| | - Fabian Daus
- Faculty of Chemistry, Philipps-Universität Marburg, 35032 Marburg, Germany
| | - Armin Geyer
- Faculty of Chemistry, Philipps-Universität Marburg, 35032 Marburg, Germany
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37
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Gadikota G, Fricker K, Jang SH, Park AHA. Carbonation of Silicate Minerals and Industrial Wastes and Their Potential Use as Sustainable Construction Materials. ACS SYMPOSIUM SERIES 2015. [DOI: 10.1021/bk-2015-1194.ch012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Greeshma Gadikota
- Department of Earth and Environmental Engineering, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, New York 10027, United States
- Department of Chemical Engineering, Columbia University in the City of New York, New York, New York 10027, United States
- Department of Civil Engineering and Engineering Mechanics, Columbia University in the City of New York, New York, New York 10027, United States
| | - Kyle Fricker
- Department of Earth and Environmental Engineering, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, New York 10027, United States
- Department of Chemical Engineering, Columbia University in the City of New York, New York, New York 10027, United States
- Department of Civil Engineering and Engineering Mechanics, Columbia University in the City of New York, New York, New York 10027, United States
| | - Sung-Hwan Jang
- Department of Earth and Environmental Engineering, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, New York 10027, United States
- Department of Chemical Engineering, Columbia University in the City of New York, New York, New York 10027, United States
- Department of Civil Engineering and Engineering Mechanics, Columbia University in the City of New York, New York, New York 10027, United States
| | - Ah-Hyung Alissa Park
- Department of Earth and Environmental Engineering, Lenfest Center for Sustainable Energy, Columbia University in the City of New York, New York 10027, United States
- Department of Chemical Engineering, Columbia University in the City of New York, New York, New York 10027, United States
- Department of Civil Engineering and Engineering Mechanics, Columbia University in the City of New York, New York, New York 10027, United States
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38
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Senior L, Crump MP, Williams C, Booth PJ, Mann S, Perriman AW, Curnow P. Structure and function of the silicifying peptide R5. J Mater Chem B 2015; 3:2607-2614. [DOI: 10.1039/c4tb01679c] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The first detailed description of the structure and function of the silicifying peptide R5.
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Affiliation(s)
- Laura Senior
- School of Biochemistry
- University of Bristol
- UK
- Bristol Centre for Functional Nanomaterials
- University of Bristol
| | | | | | | | | | - Adam W. Perriman
- School of Cellular and Molecular Medicine
- University of Bristol
- UK
| | - Paul Curnow
- School of Biochemistry
- University of Bristol
- UK
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39
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Deng S, Shi C, Xu X, Zhao H, Sun P, Chen T. Synergy between polyamine and anionic surfactant: a bioinspired approach for ordered mesoporous silica. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:2329-2334. [PMID: 24571136 DOI: 10.1021/la404478b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A novel bioinspired approach for ordered mesoporous silica was developed on the basis of the synergic coassembly between polyamine and an anionic surfactant as a template. With the help of cationic polyamine, anionic surfactant micelles could be utilized as a mesostructure template, whereas with the aid of the anionic surfactant micelles the cationic polyamine chains underwent aggregation to exert their ability to induce silica condensation. Mesoporous silicas with well-ordered mesostructure of Fd-3m symmetry and 3D hexagonal close-packed mesostructure (hcp) were fabricated. Because of the abundant types of anionic surfactants and polyamines, the synthesis approach can be regarded as a general method for anionic-surfactant-templated mesoporous silica, and new mesostructures and morphologies are expected.
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Affiliation(s)
- Shaoxin Deng
- Institute of New Catalytic Materials Science, Key Laboratory of Advanced Energy Materials Chemistry (MOE), College of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
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40
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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
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41
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Lang Y, Finn DP, Caruso F, Pandit A. Fabrication of nanopatterned polymeric microparticles using a diatom as a sacrificial template. RSC Adv 2014. [DOI: 10.1039/c4ra06728b] [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
Diatoms serve as sacrificial templates to fabricate polymeric microparticles with elaborate nano-scale architecture.
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Affiliation(s)
- Yvonne Lang
- Network of Excellence for Functional Biomaterials
- National University of Ireland
- Galway, Ireland
| | - David. P. Finn
- Pharmacology and Therapeutics
- School of Medicine and Centre for Pain Research
- National University of Ireland
- Galway, Ireland
| | - Frank Caruso
- Department of Chemical and Biomolecular Engineering
- The University of Melbourne
- Victoria 3010, Australia
| | - Abhay Pandit
- Network of Excellence for Functional Biomaterials
- National University of Ireland
- Galway, Ireland
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42
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Jantschke A, Spinde K, Brunner E. Electrostatic interplay: The interaction triangle of polyamines, silicic acid, and phosphate studied through turbidity measurements, silicomolybdic acid test, and (29)Si NMR spectroscopy. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2014; 5:2026-35. [PMID: 25551030 PMCID: PMC4273220 DOI: 10.3762/bjnano.5.211] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Accepted: 10/14/2014] [Indexed: 05/19/2023]
Abstract
The discovery of long-chain polyamines as biomolecules that are tightly associated to biosilica in diatom cell walls has inspired numerous in vitro studies aiming to characterize polyamine-silica interactions. The determination of these interactions at the molecular level is of fundamental interest on one hand for the understanding of cell wall biogenesis in diatoms and on the other hand for designing bioinspired materials synthesis approaches. The present contribution deals with the influence of amines and polyamines upon the initial self-assembly processes taking place during polyamine-mediated silica formation in solution. The influence of phosphate upon these processes is studied. For this purpose, sodium metasilicate solutions containing additives such as polyallylamine, allylamine and others in the presence/absence of phosphate were investigated. The analyses are based mainly on turbidity measurements yielding information about the early aggregation steps which finally give rise to the formation and precipitation of silica.
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Affiliation(s)
- Anne Jantschke
- TU Dresden, Fachrichtung Chemie und Lebensmittelchemie, Bioanalytische Chemie, 01062 Dresden, Germany
| | - Katrin Spinde
- TU Dresden, Fachrichtung Chemie und Lebensmittelchemie, Bioanalytische Chemie, 01062 Dresden, Germany
| | - Eike Brunner
- TU Dresden, Fachrichtung Chemie und Lebensmittelchemie, Bioanalytische Chemie, 01062 Dresden, Germany
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43
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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.
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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
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44
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Cui F, Cui T. Self-catalytic synthesis of metal oxide nanoclusters@mesoporous silica composites based on successive spontaneous reactions at near neutral conditions. Chem Commun (Camb) 2014; 50:14801-4. [DOI: 10.1039/c4cc07319c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a self-catalytic strategy for the facile synthesis of metal oxide nanoclusters@mesoporous silica by subtly making use of successive spontaneous reactions (i.e. nucleophilic substitution, self-catalytic hydrolyzation and polycondensation reaction) in water–ethanol solution at near neutral conditions.
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Affiliation(s)
- Fang Cui
- The Academy of Fundamental and Interdisciplinary Science
- Harbin Institute of Technology
- Harbin 150001, P. R. China
| | - Tieyu Cui
- The Academy of Fundamental and Interdisciplinary Science
- Harbin Institute of Technology
- Harbin 150001, P. R. China
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45
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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]
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46
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Transformation from a heat-set organogel to a room-temperature organogel induced by alcohols. J INCL PHENOM MACRO 2013. [DOI: 10.1007/s10847-013-0335-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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47
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Bridoux MC, Ingalls AE. Diatom microfossils from cretaceous and eocene sediments contain native silica precipitating long-chain polyamines. GEOBIOLOGY 2013; 11:215-23. [PMID: 23418943 DOI: 10.1111/gbi.12028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Accepted: 01/04/2013] [Indexed: 05/12/2023]
Abstract
Organic molecules from known biological sources (biomarkers) that are preserved over geological time are critical tools in the study of past conditions and events on earth. Polar molecules are typically recycled rapidly in marine environments and do not survive burial within aquatic sediments in unambiguously recognizable form. As such, geological biomarkers are formed almost exclusively from precursor biomolecules that have been altered, limiting their utility as paleoproxies. Here, we report that nitrogen-rich aliphatic long-chain polyamines (LCPAs), biosynthesized by diatoms in species-specific assemblages for the precipitation of nanopatterned siliceous cell walls (frustules), are preserved unaltered in the oldest available diatom fossils dating to the Lower Cretaceous (early Albian, 115-110 Ma). We further show that the cumulative LCPA pool accounts for 60% of the total C and 80% of the total N preserved in the Cretaceous age sediments. We suggest that silica glass formation by diatoms constitutes an important preservation mechanism for source-specific, polar biomolecules, protecting them indefinitely by encapsulation within the silicified frustule. LCPAs are a unique, source-specific carbon and nitrogen archive of diatom biomass, offering a promising tool for reconstruction of global cycles of carbon and nitrogen over geological timescales.
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Affiliation(s)
- M C Bridoux
- School of Oceanography, University of Washington, Seattle, WA, USA.
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48
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Weiher F, Schatz M, Steinem C, Geyer A. Silica Precipitation by Synthetic Minicollagens. Biomacromolecules 2013; 14:683-7. [DOI: 10.1021/bm301737m] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Felix Weiher
- Faculty of
Chemistry, Philipps University Marburg,
Hans-Meerwein-Straße,
35032 Marburg, Germany
| | - Michaela Schatz
- Institute of Organic and Biomolecular
Chemistry, University of Göttingen, Tammannstraße 2, 37077
Göttingen, Germany
| | - Claudia Steinem
- Institute of Organic and Biomolecular
Chemistry, University of Göttingen, Tammannstraße 2, 37077
Göttingen, Germany
| | - Armin Geyer
- Faculty of
Chemistry, Philipps University Marburg,
Hans-Meerwein-Straße,
35032 Marburg, Germany
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49
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Li DM, Chen YC, Zhang C, Song S, Zheng YS. Different morphologies of silica synthesized using organic templates from the same class of chiral compounds. J Mater Chem B 2013; 1:1622-1627. [DOI: 10.1039/c3tb00146f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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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
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