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Han H, Chu TC, Okamoto N, Nakamura M, Yamashita I. CNT Binding Peptides Selected by the Phage Display Method. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14204-14211. [PMID: 37751190 DOI: 10.1021/acs.langmuir.3c01151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Using the M13 phage display method, 236 amino acid sequences (peptide aptamers) that could specifically adsorb to CNTs were selected. These peptide aptamers had abundant hydrophobic amino acids and evenly dispersed charged amino acids. The hydrophobic amino acids were postulated to contribute to CNT adsorption, while the charged amino acids contribute to their aqueous solubility. The frequency of proline amino acids, which causes the amino acid main chain bending, was slightly higher than in nature, suggesting that some conformational constraint might be required. Four peptide aptamers with a high frequency of occurrence in the selected sequences were further studied. Hydrophobicity scores were periodic along the amino acid sequence. 3D structure predictions by PEP-FOLD3 indicated that these aptamers would take a helical structure with hydrophobic amino acid residues on one side, suggesting that the aptamers bind hydrophobically to the CNT. The adsorption of these four aptamers to the carbon electrode was confirmed by electrochemical impedance spectroscopy, which demonstrated the effectiveness of the phage display method. At the same time, it was shown that even for selected peptides, the adsorption performance varied, and verification was needed.
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Affiliation(s)
- HuanWen Han
- Graduate School of Engineering, Osaka University, 2-8 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Ting-Chieh Chu
- Graduate School of Engineering, Osaka University, 2-8 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Naofumi Okamoto
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0101, Japan
| | - Masakazu Nakamura
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0101, Japan
| | - Ichiro Yamashita
- Graduate School of Engineering, Osaka University, 2-8 Yamadaoka, Suita, Osaka 565-0871, Japan
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Nakahara Y, Endo Y, Inoue I. Construction Protocol of Drug-Protein Cage Complexes for Drug Delivery System. Methods Mol Biol 2023; 2671:335-347. [PMID: 37308654 DOI: 10.1007/978-1-0716-3222-2_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Ferritin is one of the most promising drug delivery system (DDS) carriers because of its uniform nanosize, biodistribution, efficient cellular uptake, and biocompatibility. Conventionally, a disassembly/reassembly method that requires pH change has been used for the encapsulation of molecules in ferritin protein nanocages. Recently, a one-step method in which a complex of ferritin and a targeted drug was obtained by incubating the mixture at an appropriate pH, was established. Here, we describe two types of protocols, the conventional disassembly/reassembly method, and the novel one-step method for the construction of a ferritin-encapsulated drug using doxorubicin as an example molecule.
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Affiliation(s)
- Yuichi Nakahara
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., Kawasaki, Kanagawa, Japan.
| | - Yuta Endo
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., Kawasaki, Kanagawa, Japan
| | - Ippei Inoue
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., Kawasaki, Kanagawa, Japan
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Lazzarin L, Pasini M, Menna E. Organic Functionalized Carbon Nanostructures for Solar Energy Conversion. Molecules 2021; 26:5286. [PMID: 34500718 PMCID: PMC8433975 DOI: 10.3390/molecules26175286] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 08/25/2021] [Accepted: 08/27/2021] [Indexed: 12/25/2022] Open
Abstract
This review presents an overview of the use of organic functionalized carbon nanostructures (CNSs) in solar energy conversion schemes. Our attention was focused in particular on the contribution of organic chemistry to the development of new hybrid materials that find application in dye-sensitized solar cells (DSSCs), organic photovoltaics (OPVs), and perovskite solar cells (PSCs), as well as in photocatalytic fuel production, focusing in particular on the most recent literature. The request for new materials able to accompany the green energy transition that are abundant, low-cost, low-toxicity, and made from renewable sources has further increased the interest in CNSs that meet all these requirements. The inclusion of an organic molecule, thanks to both covalent and non-covalent interactions, in a CNS leads to the development of a completely new hybrid material able of combining and improving the properties of both starting materials. In addition to the numerical data, which unequivocally state the positive effect of the new hybrid material, we hope that these examples can inspire further research in the field of photoactive materials from an organic point of view.
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Affiliation(s)
- Luca Lazzarin
- Department of Chemical Sciences & INSTM, University of Padua, Via Marzolo 1, 35131 Padova, Italy;
| | - Mariacecilia Pasini
- Institute of Chemical Sciences and Technologies “G. Natta”-SCITEC, National Research Council, CNR-SCITEC, Via Corti 12, 20133 Milan, Italy
| | - Enzo Menna
- Department of Chemical Sciences & INSTM, University of Padua, Via Marzolo 1, 35131 Padova, Italy;
- Interdepartmental Centre Giorgio Levi Cases for Energy Economics and Technology, University of Padua, 35131 Padova, Italy
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Inoue I, Chiba M, Ito K, Okamatsu Y, Suga Y, Kitahara Y, Nakahara Y, Endo Y, Takahashi K, Tagami U, Okamoto N. One-step construction of ferritin encapsulation drugs for cancer chemotherapy. NANOSCALE 2021; 13:1875-1883. [PMID: 33439183 DOI: 10.1039/d0nr04019c] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Conventionally, a disassembly and reassembly method has been used for encapsulation of drug molecules in ferritin protein nano-cages. However, clinical applications of ferritin have been greatly restricted by its limited drug-loading capacity and process complexity. Here, we establish a simple high yield process for preparing high drug-loaded ferritin nanomedicine for industrial production. A complex of ferritin and a target drug was obtained by incubating the mixture at an appropriate pH. An electrostatic charge potential and small ferritin cavity facilitates the passage of drug molecules through the pores, traversing the ferritin shell and enabling deposition of the drug in the ferritin cavity. Compared to the disassembly/reassembly method, the loading capacity of a doxorubicin-loaded ferritin heavy chain (DOX-FTH), constructed by our novel method, was over 3-fold higher, while doxorubicin recovery was 10-fold higher. Results of transmission electron microscopy, size exclusion chromatography, dynamic light scattering, and zeta potential indicate that DOX-FTH exhibits the same physicochemical characteristics of natural apo-ferritin. Moreover, DOX-FTH can be taken up and induce apoptosis of cancer cells overexpressing TfR1. Here, we have demonstrated the successful introduction of more than ten drug molecule types into ferritin nano-cages using a novel method. These results demonstrate that this one-step method is a powerful production process to construct a drug-loading ferritin drug delivery system carrier.
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Affiliation(s)
- Ippei Inoue
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc. 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-8681, Japan.
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Hashima Y, Ishikawa Y, Raifuku I, Inoue I, Okamoto N, Yamashita I, Minami T, Uraoka Y. Easy and green preparation of a graphene-TiO 2 nanohybrid using a supramolecular biomaterial consisting of artificially bifunctionalized proteins and its application for a perovskite solar cell. NANOSCALE 2018; 10:19249-19253. [PMID: 30141815 DOI: 10.1039/c8nr04441d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We report a novel preparation method for a graphene/TiO2 nanohybrid using a supramolecular biomaterial (CDT1). CDT1 can offer an increase in the dispersibility of graphene in water and subsequent complexation of graphene and TiO2. This nanohybrid was applied to a perovskite solar cell and success was achieved in improving its photoelectric conversion efficiency.
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Affiliation(s)
- Yuki Hashima
- Graduate School of Materials Science, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan.
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Inoue I, Umemura Y, Raifuku I, Toyoda K, Ishikawa Y, Ito S, Yasueda H, Uraoka Y, Yamashita I. Biotemplated Synthesis of TiO 2-Coated Gold Nanowire for Perovskite Solar Cells. ACS OMEGA 2017; 2:5478-5485. [PMID: 31457816 PMCID: PMC6644609 DOI: 10.1021/acsomega.7b00940] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 08/22/2017] [Indexed: 06/08/2023]
Abstract
Fibrous nanomaterials have been widely employed toward the improvement of photovoltaic devices. Their light-trapping capabilities, owing to their unique structure, provide a direct pathway for carrier transport. This paper reports the improvement of perovskite solar cell (PSC) performance by a well-dispersed TiO2-coated gold nanowire (GNW) in a TiO2 cell layer. We used an artificially designed cage-shaped protein to synthesize a TiO2-coated GNW in aqueous solution under atmospheric pressure. The artificially cage-shaped protein with gold-binding peptides and titanium-compound-biomineralizing peptides can bind GNWs and selectively deposit a thin TiO2 layer on the gold surface. The TiO2-coated GNW incorporated in the photoelectrodes of PSCs increased the external quantum efficiency within the range of 350-750 nm and decreased the internal resistance by 12%. The efficient collection of photogenerated electrons by the nanowires boosted the power conversion efficiency by 33% compared to a typical mesoporous-TiO2-nanoparticle-only electrode.
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Affiliation(s)
- Ippei Inoue
- Frontier
Research Laboratories, Institute for Innovation, Ajinomoto Co., Inc., 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-8681, Japan
| | - Yuki Umemura
- Graduate
School of Materials Science, Nara Institute
of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Itaru Raifuku
- Graduate
School of Materials Science, Nara Institute
of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Kenichi Toyoda
- Graduate
School of Materials Science, Nara Institute
of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Yasuaki Ishikawa
- Graduate
School of Materials Science, Nara Institute
of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Seigo Ito
- Department
of Materials and Synchrotron Radiation Engineering, Graduate School
of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan
| | - Hisashi Yasueda
- Frontier
Research Laboratories, Institute for Innovation, Ajinomoto Co., Inc., 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki-shi, Kanagawa 210-8681, Japan
| | - Yukiharu Uraoka
- Graduate
School of Materials Science, Nara Institute
of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Ichiro Yamashita
- Graduate
School of Materials Science, Nara Institute
of Science and Technology, 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
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