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Maeda Y, Yasuda T, Matsuzaki K, Okazaki Y, Pouget E, Oda R, Kitada A, Murase K, Raffy G, Bassani DM, Fukami K. Common mechanism for helical nanotube formation by anodic polymerization and by cathodic deposition using helical pores on silicon electrodes. Electrochem commun 2020. [DOI: 10.1016/j.elecom.2020.106714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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27
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Dedovets D, Martin B, Okazaki Y, Buffeteau T, Pouget E, Oda R. Hierarchical chirality expression of gemini surfactant aggregates via equilibrium between chiral nucleotide and nonchiral mono-anions. Chirality 2020; 32:949-960. [PMID: 32346925 DOI: 10.1002/chir.23230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 03/24/2020] [Accepted: 04/01/2020] [Indexed: 11/06/2022]
Abstract
The assembling behaviors of nonchiral dicationic amphiphilic molecules (gemini) in the presence of the mixture of chiral anionic nucleotides and nonchiral anions are investigated. We demonstrate that subtle balance of various physico-chemical parameters and the competition between chiral and nonchiral anions at the interface of gemini assemblies influences the expression of molecular chirality at the micrometer scale through the hierarchical molecular assembly.
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Gao J, Wu W, Lemaire V, Carvalho A, Nlate S, Buffeteau T, Oda R, Battie Y, Pauly M, Pouget E. Tuning the Chiroptical Properties of Elongated Nano-objects via Hierarchical Organization. ACS NANO 2020; 14:4111-4121. [PMID: 32155050 DOI: 10.1021/acsnano.9b08823] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Chiral materials appear as excellent candidates to control and manipulate the polarization of light in optical devices. In nanophotonics, the self-assembly of colloidal plasmonic nanoparticles gives rise to strong resonances in the visible range, and when such organizations are chiral, a strong chiroplasmonic effect can be observed. In the present work, we describe the optical properties of chiral artificial nanophotonic materials, Goldhelices, which are hierarchically organized by grazing incidence spraying. These Goldhelices are made by plasmonic nanoparticles (gold) grafted onto helical templates made from silica nanohelices. A comparison of oriented versus non-oriented surfaces has been performed by Mueller matrix polarimetry, showing the importance of the organization of the Goldhelices regarding their interaction with light. Moreover, mono- versus multilayer photonic films are created, and the measured optical properties are discussed and compared to simulations.
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Mashima S, Ryu N, Kuwahara Y, Takafuji M, Jintoku H, Oda R, Ihara H. Multi-chiro-informative System Created by a Porphyrin-functionalized Chiral Molecular Assembly. CHEM LETT 2020. [DOI: 10.1246/cl.200018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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30
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Takafuji M, Kawahara T, Sultana N, Ryu N, Yoshida K, Kuwahara Y, Oda R, Ihara H. Extreme enhancement of secondary chirality through coordination-driven steric changes of terpyridyl ligand in glutamide-based molecular gels. RSC Adv 2020; 10:29627-29632. [PMID: 35518247 PMCID: PMC9056163 DOI: 10.1039/d0ra05057a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 08/03/2020] [Indexed: 01/01/2023] Open
Abstract
Aggregation-induced chirality is potentially useful in sensor technology applications. Herein we show extreme enhancement of secondary chirality through coordination-driven steric changes of terpyridyl ligand in molecular gels. The secondary chirality reflecting on enhancement of chiral signals (i.e., circular dichroism (CD) and circularly polarised luminescence (CPL)) of the molecular gels formed from glutamide-attached terpyridine (G-tpy) is extremely enhanced by the coordination of its terpyridyl groups to metal ions such as Cu2+, Zn2+ and Ru2+, which is due to dramatic changes in the stacked structure of the chromophore groups through the formation of metal ion complex. Metal-free terpyridine exists in a non-planar geometry, which suppress π–π stacking interactions among aggregates. The planarity of the terpyridyl group is improved through metal-ion complexation, which induces the metal-ion-coordinated terpyridyl groups to stack. The thermal stabilities of the CD signals are strongly affected by the metal-ion species. CPL signal is generated in the molecular gel formed from G-tpy–Zn2+ complex accompanied by chelation-enhanced fluorescence. It is expected that large and sensitive coordination-driven secondary chirality signals (CD and CPL) are useful for sensing guest molecules and the surrounding environment. Dramatic changes of secondary chirality reflecting on enhancement of chiral signals (i.e., CD and CPL) is induced through coordination-derived steric changes of terpyridyl ligand attached on glutamide-based molecular gels.![]()
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31
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Yospanya W, Nishijima M, Araki Y, Buffeteau T, Pouget E, Wada T, Oda R. Near perfect head-to-head selectivity on the supramolecular photocyclodimerisation of 2-anthracenecarboxylate with self-organised gemini surfactant bilayers. Chem Commun (Camb) 2020; 56:10058-10061. [DOI: 10.1039/d0cc04198j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Near perfect head-to-head selectivity upon supramolecular [4+4] photocyclodimerisation of 2-anthracenecarboxylate were achieved through silicificated self-organised gemini surfactant bilayers in water at room temperature.
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32
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Ryu N, Kawaguchi T, Yanagita H, Okazaki Y, Buffeteau T, Yoshida K, Shirosaki T, Nagaoka S, Takafuji M, Ihara H, Oda R. Chirality induction on non-chiral dye-linked polysilsesquioxane in nanohelical structures. Chem Commun (Camb) 2020; 56:7241-7244. [DOI: 10.1039/d0cc02224a] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chirally arranged organic dye-linked polysilsesquioxane was prepared, through a sol–gel transcription using its non-chiral precursor with a chiral supramolecular template, and its chiroptical properties were investigated.
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Yasuda T, Maeda Y, Matsuzaki K, Okazaki Y, Oda R, Kitada A, Murase K, Fukami K. Spontaneous Symmetry Breaking of Nanoscale Spatiotemporal Pattern as the Origin of Helical Nanopore Etching in Silicon. ACS APPLIED MATERIALS & INTERFACES 2019; 11:48604-48611. [PMID: 31794191 DOI: 10.1021/acsami.9b18025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Nanometric chiral objects such as twisted or helical nanoribbons represent a new class of objects having important potential in a large panel of applications, taking advantage, for example, of electromechanical or optical chirality, local chiral environment for catalysis, and chiral recognition. Supramolecular chemistry has played a central role in the production of such structures through either chiral macromolecules/foldamers or the self-assembly of chiral molecules; the latter can also be used as templates for the sol-gel transcription to silica materials, offering them polymorphisms with further structural stability. Here, we report a totally different and dynamic approach to produce helical mesostructures. This study focuses on helical nanopores that are spontaneously formed in the platinum-assisted chemical etching of silicon by dynamic self-organization under a nonequilibrium state. The symmetry breaking of a helical nanopore formation is achieved by the spatial symmetry breaking of a spatiotemporal pattern at the nanoscale and without incorporation of chiral molecules. Rotational motion of the platinum nanocatalyst, which is regarded as a spatiotemporal pattern at the etching frontier (the platinum/silicon interface), induces precession movement of the nanocatalyst, and movement of the catalyst during etching forms helical nanopores in the silicon. We consider that this study is an important milestone to understand the close relation between spatiotemporal pattern formation and the dynamic emergence of symmetry breaking in chemical reactions.
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Attoui M, Pouget E, Oda R, Talaga D, Buffeteau T, Nlate S. Silica twisted and helical nanoribbons as chiral inducers for peroxophosphotungstate anions. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.119127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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35
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Pathan S, Noguchi H, Yamada N, Kuwahara Y, Takafuji M, Oda R, Ihara H. Fabrication of Fluorescent One-dimensional-nanocomposites through One-pot Self-assembling Polymerization on Nano-helical Silica. CHEM LETT 2019. [DOI: 10.1246/cl.190339] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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36
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Yamada N, Noguchi H, Orimoto Y, Kuwahara Y, Takafuji M, Pathan S, Oda R, Mahammadali Rahimli A, Ahmed Ramazanov M, Ihara H. Emission-Color Control in Polymer Films by Memorized Fluorescence Solvatochromism in a New Class of Totally Organic Fluorescent Nanogel Particles. Chemistry 2019; 25:10141-10148. [PMID: 31095789 DOI: 10.1002/chem.201901239] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 05/06/2019] [Indexed: 01/18/2023]
Abstract
In this work, a new class of totally organic fluorescent nanogel particles and their exceptionally specific behaviors based on their unique structures are introduced, which draws a sharp line from conventional fluorophore-doped and fluorophore-branched-type particles. The nanogel particles, the diameter of which could be controlled by adjusting reaction conditions, such as the solvent system, were spontaneously fabricated with a spherical shape by direct polymerization of non-heterocyclic aromatic compounds, such as 2,6-dihydroxyanthracene, 2,6-dihydroxynaphthalene, and 9,9-bis(4-hydroxyphenyl)fluorene with triazinane as the cross-linker. A fluorophoric moiety formed from a polymer main chain was realized in the particle, and consequently, the resultant content of the fluorophoric moiety was around 70-80 wt % per particle. The uniqueness and versatility of the particles can be emphasized by their good compatibility with various solvents due to their amphiphilic and ampholytic swelling properties, but also by their remarkable fluorescent solvatochromism in the dispersion state. Furthermore, these behaviors were preserved even in their polymer composite system. This study also demonstrates that various fluorescent polymer films can be fabricated with emission color control due to memorization of the solvatochromism phenomenon of the dispersed fluorescent nanoparticles.
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37
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Fezoua-Boubegtiten Z, Hastoy B, Scotti P, Milochau A, Bathany K, Desbat B, Castano S, Oda R, Lang J. The transmembrane domain of the SNARE protein VAMP2 is highly sensitive to its lipid environment. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:670-676. [DOI: 10.1016/j.bbamem.2018.12.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 11/15/2018] [Accepted: 12/17/2018] [Indexed: 12/12/2022]
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38
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Faridi A, Sun Y, Okazaki Y, Peng G, Gao J, Kakinen A, Faridi P, Zhao M, Javed I, Purcell AW, Davis TP, Lin S, Oda R, Ding F, Ke PC. Mitigating Human IAPP Amyloidogenesis In Vivo with Chiral Silica Nanoribbons. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1802825. [PMID: 30369028 PMCID: PMC6263833 DOI: 10.1002/smll.201802825] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 08/26/2018] [Indexed: 05/17/2023]
Abstract
Amyloid fibrils generally display chirality, a feature which has rarely been exploited in the development of therapeutics against amyloid diseases. This study reports, for the first time, the use of mesoscopic chiral silica nanoribbons against the in vivo amyloidogenesis of human islet amyloid polypeptide (IAPP), the peptide whose aggregation is implicated in type 2 diabetes. The thioflavin T assay and transmission electron microscopy show accelerated IAPP fibrillization through elimination of the nucleation phase and shortening of the elongation phase by the nanostructures. Coarse-grained simulations offer complementary molecular insights into the acceleration of amyloid aggregation through their nonspecific binding and directional seeding with the nanostructures. This accelerated IAPP fibrillization translates to reduced toxicity, especially for the right-handed silica nanoribbons, as revealed by cell viability, helium ion microscopy, as well as zebrafish embryo survival, developmental, and behavioral assays. This study has implicated the potential of employing chiral nanotechnologies against the mesoscopic enantioselectivity of amyloid proteins and their associated diseases.
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39
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Oishi H, Yoshida K, Kuwahara Y, Takafuji M, Oda R, Ihara H. Generation of strong circularly polarized luminescence induced by chiral organogel based on L-glutamide. J Taiwan Inst Chem Eng 2018. [DOI: 10.1016/j.jtice.2018.03.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Oda R, Okuda K, Watanabe T, Sakane T, Tatematsu T, Yokota K, Haneda H, Nakanishi R. P3.16-37 Comparison of Long-Term Outcomes Between VATS and Open Lobectomies for Stage I NSCLC: Propensity Score-Matching Analysis. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.1944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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41
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Sakane T, Haneda H, Okuda K, Yokota K, Tatematsu T, Oda R, Watanabe T, Saito Y, Yamada T, Nakanishi R. OA11.04 A Comparative Study of PD-L1 Immunohistochemical Assays with Four Reliable Antibodies in Thymic Carcinoma. J Thorac Oncol 2018. [DOI: 10.1016/j.jtho.2018.08.296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Attoui M, Pouget E, Oda R, Talaga D, Le Bourdon G, Buffeteau T, Nlate S. Cover Feature: Optically Active Polyoxometalate-Based Silica Nanohelices: Induced Chirality from Inorganic Nanohelices to Achiral POM Clusters (Chem. Eur. J. 44/2018). Chemistry 2018. [DOI: 10.1002/chem.201803707] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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43
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Attoui M, Pouget E, Oda R, Talaga D, Le Bourdon G, Buffeteau T, Nlate S. Optically Active Polyoxometalate-Based Silica Nanohelices: Induced Chirality from Inorganic Nanohelices to Achiral POM Clusters. Chemistry 2018; 24:11344-11353. [DOI: 10.1002/chem.201801905] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 05/22/2018] [Indexed: 11/11/2022]
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44
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Okazaki Y, Ryu N, Buffeteau T, Pathan S, Nagaoka S, Pouget E, Nlate S, Ihara H, Oda R. Induced circular dichroism of monoatomic anions: silica-assisted the transfer of chiral environment from molecular assembled nanohelices to halide ions. Chem Commun (Camb) 2018; 54:10244-10247. [DOI: 10.1039/c8cc05449e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Induced CD of monoatomic anions was detected using silica-coated molecular assembled nanohelices and multi-step chirality induction was achieved through an in situ chemical reaction via chiralized monoatomic anions.
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Sakane T, Moriyama S, Haneda H, Okuda K, Kawano O, Watanabe T, Oda R, Nakanishi R. MA 16.10 Treatment Outcomes of Primary Malignant Germ Cell Tumors of the Mediastinum. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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46
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Moriyama S, Haneda H, Okuda K, Kawano O, Sakane T, Oda R, Watanabe T, Yano M, Nakanishi R. P1.17-005 Pure Red Cell Aplasia Associated with Thymoma: A Report of a Single-Center Experience. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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47
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Okuda K, Watanabe T, Oda R, Sakane T, Kawano O, Haneda H, Moriyama S, Nakanishi R. P2.17-001 Pulmonary Inflammatory Myofibroblastic Tumor with TPM4-ALK Translocation. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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48
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Hastoy B, Scotti PA, Milochau A, Fezoua-Boubegtiten Z, Rodas J, Megret R, Desbat B, Laguerre M, Castano S, Perrais D, Rorsman P, Oda R, Lang J. A Central Small Amino Acid in the VAMP2 Transmembrane Domain Regulates the Fusion Pore in Exocytosis. Sci Rep 2017; 7:2835. [PMID: 28588281 PMCID: PMC5460238 DOI: 10.1038/s41598-017-03013-3] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 04/27/2017] [Indexed: 11/30/2022] Open
Abstract
Exocytosis depends on cytosolic domains of SNARE proteins but the function of the transmembrane domains (TMDs) in membrane fusion remains controversial. The TMD of the SNARE protein synaptobrevin2/VAMP2 contains two highly conserved small amino acids, G100 and C103, in its central portion. Substituting G100 and/or C103 with the β-branched amino acid valine impairs the structural flexibility of the TMD in terms of α-helix/β-sheet transitions in model membranes (measured by infrared reflection-absorption or evanescent wave spectroscopy) during increase in protein/lipid ratios, a parameter expected to be altered by recruitment of SNAREs at fusion sites. This structural change is accompanied by reduced membrane fluidity (measured by infrared ellipsometry). The G100V/C103V mutation nearly abolishes depolarization-evoked exocytosis (measured by membrane capacitance) and hormone secretion (measured biochemically). Single-vesicle optical (by TIRF microscopy) and biophysical measurements of ATP release indicate that G100V/C103V retards initial fusion-pore opening, hinders its expansion and leads to premature closure in most instances. We conclude that the TMD of VAMP2 plays a critical role in membrane fusion and that the structural mobility provided by the central small amino acids is crucial for exocytosis by influencing the molecular re-arrangements of the lipid membrane that are necessary for fusion pore opening and expansion.
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Cheng J, Le Saux G, Gao J, Buffeteau T, Battie Y, Barois P, Ponsinet V, Delville MH, Ersen O, Pouget E, Oda R. GoldHelix: Gold Nanoparticles Forming 3D Helical Superstructures with Controlled Morphology and Strong Chiroptical Property. ACS NANO 2017; 11:3806-3818. [PMID: 28358490 DOI: 10.1021/acsnano.6b08723] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Plasmonic nanoparticles, particularly gold nanoparticles (GNPs) hold a great potential as structural and functional building blocks for three-dimensional (3D) nanoarchitectures with specific optical applications. However, a rational control of their assembly into nanoscale superstructures with defined positioning and overall arrangement still remains challenging. Herein, we propose a solution to this challenge by using as building blocks: (1) nanometric silica helices with tunable handedness and sizes as a matrix and (2) GNPs with diameter varying from 4 to 10 nm to prepare a collection of helical GNPs superstructures (called Goldhelices hereafter). These nanomaterials exhibit well-defined arrangement of GNPs following the helicity of the silica template. Strong chiroptical activity is evidenced by circular dichroism (CD) spectroscopy at the wavelength of the surface plasmon resonance (SPR) of the GNPs with a anisotropy factor (g-factor) of the order of 1 × 10-4, i.e., 10-fold larger than what is typically reported in the literature. Such CD signals were simulated using a coupled dipole method which fit very well the experimental data. The measured signals are 1-2 orders of magnitude lower than the simulated signals, which is explained by the disordered GNPs grafting, the polydispersity of the GNPs, and the dimension of the nanohelices. These Goldhelices based on inorganic templates are much more robust than previously reported organic-based chiroptical nanostructures, making them good candidates for complex hierarchical organization, providing a promising approach for light management and benefits in applications such as circular polarizers, chiral metamaterials, or chiral sensing in the visible range.
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50
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Goto T, Okazaki Y, Ueki M, Kuwahara Y, Takafuji M, Oda R, Ihara H. Induction of Strong and Tunable Circularly Polarized Luminescence of Nonchiral, Nonmetal, Low-Molecular-Weight Fluorophores Using Chiral Nanotemplates. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201612331] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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