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Zhang H, Xu T, Liang J, Wu B, Yang X, Wang J, Zhou Z, Wang H. Controlling Supramolecular Fiber Formation of Nucleopeptide by Guanosine Triphosphate. Biomacromolecules 2023; 24:5678-5686. [PMID: 37934694 DOI: 10.1021/acs.biomac.3c00674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2023]
Abstract
Cells use dynamic self-assembly to construct functional structures for maintaining cellular homeostasis. However, using a natural biological small molecule to mimic this phenomenon remains challenging. This work reports the dynamic microfiber formation of nucleopeptide driven by guanosine triphosphate, the small molecule that controls microtubule polymerization in living cells. Deactivation of GTP by enzyme dissociates the fibers, which could be reactivated by adding GTP. Molecular dynamic simulation unveils the mystery of microfiber formation of GBM-1 and GTP. Moreover, the microfiber formation can also be controlled by diffusion-driven GTP gradients across a semipermeable membrane in bulk conditions and the microfluidic method in the defined droplets. This study provides a new platform to construct dynamic self-assembly materials of molecular building blocks driven by GTP.
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Affiliation(s)
- Hongyue Zhang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, No. 600 Dunyu Road, Hangzhou 310024, Zhejiang Province, China
| | - Tengyan Xu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, No. 600 Dunyu Road, Hangzhou 310024, Zhejiang Province, China
| | - Juan Liang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, No. 600 Dunyu Road, Hangzhou 310024, Zhejiang Province, China
| | - Bihan Wu
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, No. 600 Dunyu Road, Hangzhou 310024, Zhejiang Province, China
| | - Xuejiao Yang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, No. 600 Dunyu Road, Hangzhou 310024, Zhejiang Province, China
| | - Jing Wang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, No. 600 Dunyu Road, Hangzhou 310024, Zhejiang Province, China
| | - Ziao Zhou
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, No. 600 Dunyu Road, Hangzhou 310024, Zhejiang Province, China
| | - Huaimin Wang
- Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, Department of Chemistry, School of Science, Institute of Natural Sciences, Westlake Institute for Advanced Study, Westlake University, No. 600 Dunyu Road, Hangzhou 310024, Zhejiang Province, China
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Covalent transfer of chemical gradients onto a graphenic surface with 2D and 3D control. Nat Commun 2022; 13:7006. [PMID: 36384990 PMCID: PMC9668971 DOI: 10.1038/s41467-022-34684-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 11/02/2022] [Indexed: 11/17/2022] Open
Abstract
Control over the functionalization of graphenic materials is key to enable their full application in electronic and optical technologies. Covalent functionalization strategies have been proposed as an approach to tailor the interfaces’ structure and properties. However, to date, none of the proposed methods allow for a covalent functionalization with control over the grafting density, layer thickness and/or morphology, which are key aspects for fine-tuning the processability and performance of graphenic materials. Here, we show that the no-slip boundary condition at the walls of a continuous flow microfluidic device offers a way to generate controlled chemical gradients onto a graphenic material with 2D and 3D control, a possibility that will allow the sophisticated functionalization of these technologically-relevant materials. Covalent modification is an essential chemical method for altering the physicochemical properties of material interfaces. Here, the authors show that the no-slip conditions in microfluidic devices grant spatiotemporal control over molecular grafting.
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3
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Singh A, Joo JU, Kim DP. Microfluidic-driven ultrafast self-assembly of a dipeptide into stimuli-responsive 0D, 1D, and 2D nanostructures and as hydrolase mimic. NANOSCALE 2022; 14:15010-15020. [PMID: 36193959 DOI: 10.1039/d2nr03092f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Numerous peptides have been utilized to explore the efficacy of their self-assembly to produce nanostructures to mimic the self-organization capability of biomolecules in nature. Self-assembled nanostructures have significant applicability for a range of diverse applications. While the ability to create self-assembled functional materials has greatly improved, the self-assembly process, which results in ordered 0D, 1D, and 2D nanostructures, is still time-consuming. Moreover, in situ structural transformation from one self-assembled structure to another with different dimensions presents an additional challenge. Therefore, in this report, we demonstrate self-assembly in an ultrafast fashion to access four different nanostructures, namely, twisted bundle (TB), nanoparticle (NP), nanofiber (NF), and nanosheet (NS), from a simple dipeptide with the aid of simple microfluidic reactors by applying different stimuli. Additionally, an integrated microfluidic system enabled rapid structural switchover between two types in an ultrashort period of time. It is interesting to note that the formation of the twisted bundle (TB) morphology enabled the formation of an extended entangled network, which resulted in the formation of a hydrogel (1 w/v%). In addition, the nanostructures obtained using the ultrafast self-assembly process were investigated to study their hydrolase enzyme activity mimicking performance against a model substrate (p-NPA) reaction. Intriguingly, we found that our nanostructures were suitably well ordered, and when taking molecular mass into consideration, showed improved catalytic efficiency as compared to the native enzymes.
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Affiliation(s)
- Ashmeet Singh
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea.
| | - Jeong-Un Joo
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea.
| | - Dong-Pyo Kim
- Center of Intelligent Microprocess of Pharmaceutical Synthesis, Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea.
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4
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Khoeini D, He V, Boyd BJ, Neild A, Scott TF. Nonequilibrium interfacial diffusion across microdroplet interface. LAB ON A CHIP 2022; 22:3770-3779. [PMID: 36070434 DOI: 10.1039/d2lc00326k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Increases in complexity attainable in molecular self-assembly necessitates both advanced molecular design as well as microenvironmental control. Such control is offered by microfluidics, where precise chemical compositions and gradients can be readily established. A droplet microfluidic platform combining upstream step emulsification with downstream hydrodynamic microtraps has been designed to facilitate molecular self-assembly. The step emulsification rapidly generates uniform droplets which act as reaction chambers. The hydrodynamic microtraps hold droplets against the flow ensuring they are exposed to a continuous supply of fresh fluid for constant reagent extraction and/or delivery. Additionally, the droplet immobilization permits real-time droplet characterization and reaction monitoring. Subsequently, droplets can be released from the traps through flow reversal, allowing post-process characterization. The microfluidic system was demonstrated by the phase separation of lyotropic droplets. Ethanol/water droplets were created in a continuous ambient squalene/monoolein microflow, causing the continuous extraction of ethanol from the droplets and delivery of monoolein from the ambient microflow. Unlike conventional bulk techniques and continuous microfluidics, where finite microchannel lengths necessarily impose limits to the extent to which slow processes can proceed, this approach allows extended duration reactions whilst enabling real time process monitoring.
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Affiliation(s)
- Davood Khoeini
- Laboratory for Micro Systems, Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia.
| | - Vincent He
- Laboratory for Micro Systems, Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia.
| | - Ben J Boyd
- Department of Pharmacy, University of Copenhagen, Denmark
- Monash Institute of Pharmaceutical Sciences, Monash University, Clayton, VIC 3800, Australia
| | - Adrian Neild
- Laboratory for Micro Systems, Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia.
| | - Timothy F Scott
- Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia.
- Department of Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia
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5
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Synthesis, Characterization and Evaluation of Peptide Nanostructures for Biomedical Applications. Molecules 2021; 26:molecules26154587. [PMID: 34361740 PMCID: PMC8348434 DOI: 10.3390/molecules26154587] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/04/2021] [Accepted: 07/17/2021] [Indexed: 12/19/2022] Open
Abstract
There is a challenging need for the development of new alternative nanostructures that can allow the coupling and/or encapsulation of therapeutic/diagnostic molecules while reducing their toxicity and improving their circulation and in-vivo targeting. Among the new materials using natural building blocks, peptides have attracted significant interest because of their simple structure, relative chemical and physical stability, diversity of sequences and forms, their easy functionalization with (bio)molecules and the possibility of synthesizing them in large quantities. A number of them have the ability to self-assemble into nanotubes, -spheres, -vesicles or -rods under mild conditions, which opens up new applications in biology and nanomedicine due to their intrinsic biocompatibility and biodegradability as well as their surface chemical reactivity via amino- and carboxyl groups. In order to obtain nanostructures suitable for biomedical applications, the structure, size, shape and surface chemistry of these nanoplatforms must be optimized. These properties depend directly on the nature and sequence of the amino acids that constitute them. It is therefore essential to control the order in which the amino acids are introduced during the synthesis of short peptide chains and to evaluate their in-vitro and in-vivo physico-chemical properties before testing them for biomedical applications. This review therefore focuses on the synthesis, functionalization and characterization of peptide sequences that can self-assemble to form nanostructures. The synthesis in batch or with new continuous flow and microflow techniques will be described and compared in terms of amino acids sequence, purification processes, functionalization or encapsulation of targeting ligands, imaging probes as well as therapeutic molecules. Their chemical and biological characterization will be presented to evaluate their purity, toxicity, biocompatibility and biodistribution, and some therapeutic properties in vitro and in vivo. Finally, their main applications in the biomedical field will be presented so as to highlight their importance and advantages over classical nanostructures.
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Khoeini D, Scott TF, Neild A. Microfluidic enhancement of self-assembly systems. LAB ON A CHIP 2021; 21:1661-1675. [PMID: 33949588 DOI: 10.1039/d1lc00038a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Dynamic, kinetically-controlled, self-assembly processes are commonly observed in nature and are capable of creating intricate, functional architectures from simple precursors. However, notably, much of the research into molecular self-assembly has been performed using conventional bulk techniques where the resultant species are dictated by thermodynamic stability to yield relatively simple assemblies. Whereas, the environmental control offered by microfluidic systems offers methods to achieve non-equilibrium reaction conditions capable of increasingly sophisticated self-assembled structures. Alterations to the immediate microenvironment during the assembly of the molecules is possible, providing the basis for kinetically-controlled assembly. This review examines the key mechanism offered by microfluidic systems and the architectures required to access them. The mechanisms include diffusion-led mixing, shear gradient alignment, spatial and temporal confinement, and structural templates in multiphase systems. The works are selected and categorised in terms of the microfluidic approaches taken rather than the chemical constructs which are formed.
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Affiliation(s)
- Davood Khoeini
- Laboratory for Micro Systems, Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia.
| | - Timothy F Scott
- Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia and Department of Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia
| | - Adrian Neild
- Laboratory for Micro Systems, Department of Mechanical and Aerospace Engineering, Monash University, Clayton, VIC 3800, Australia.
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Bera S, Dong X, Krishnarjuna B, Raab SA, Hales DA, Ji W, Tang Y, Shimon LJ, Ramamoorthy A, Clemmer DE, Wei G, Gazit E. Solid-state packing dictates the unexpected solubility of aromatic peptides. CELL REPORTS. PHYSICAL SCIENCE 2021; 2:100391. [PMID: 33928264 PMCID: PMC8063180 DOI: 10.1016/j.xcrp.2021.100391] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 02/11/2021] [Accepted: 03/12/2021] [Indexed: 05/10/2023]
Abstract
The understanding and prediction of the solubility of biomolecules, even of the simplest ones, reflect an open question and unmet need. Short aromatic tripeptides are among the most highly aggregative biomolecules. However, in marked contrast, Ala-Phe-Ala (AFA) was surprisingly found to be non-aggregative and could be solubilized at millimolar concentrations. Here, aiming to uncover the underlying molecular basis of its high solubility, we explore in detail the solubility, aggregation propensity, and atomic-level structure of the tripeptide. We demonstrate an unexpectedly high water solubility of AFA reaching 672 mM, two orders of magnitude higher than reported previously. The single crystal structure reveals an anti-parallel β sheet conformation devoid of any aromatic interactions. This study provides clear mechanistic insight into the structural basis of solubility and suggests a simple and feasible tool for its estimation, bearing implications for design of peptide drugs, peptides materials, and advancement of peptide nanotechnology.
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Affiliation(s)
- Santu Bera
- Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
| | - Xuewei Dong
- Department of Physics, State Key Laboratory of Surface Physics, Key Laboratory for Computational Physical Sciences (MOE), Fudan University, Shanghai, 200433, People’s Republic of China
| | - Bankala Krishnarjuna
- Biophysics Program, Department of Chemistry, Macromolecular Science and Engineering, The University of Michigan, Ann Arbor, MI 48109-1055, USA
| | - Shannon A. Raab
- Department of Chemistry, Indiana University, 800 Kirkwood Avenue, Bloomington, IN 47401, USA
| | - David A. Hales
- Department of Chemistry, Indiana University, 800 Kirkwood Avenue, Bloomington, IN 47401, USA
- Department of Chemistry, Hendrix College, Conway, AR 72032, USA
| | - Wei Ji
- Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
| | - Yiming Tang
- Department of Physics, State Key Laboratory of Surface Physics, Key Laboratory for Computational Physical Sciences (MOE), Fudan University, Shanghai, 200433, People’s Republic of China
| | - Linda J.W. Shimon
- Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Ayyalusamy Ramamoorthy
- Biophysics Program, Department of Chemistry, Macromolecular Science and Engineering, The University of Michigan, Ann Arbor, MI 48109-1055, USA
| | - David E. Clemmer
- Department of Chemistry, Indiana University, 800 Kirkwood Avenue, Bloomington, IN 47401, USA
| | - Guanghong Wei
- Department of Physics, State Key Laboratory of Surface Physics, Key Laboratory for Computational Physical Sciences (MOE), Fudan University, Shanghai, 200433, People’s Republic of China
| | - Ehud Gazit
- Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv 69978, Israel
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Castillo-Vallés M, Romero P, Sebastián V, Ros MB. Microfluidics for the rapid and controlled preparation of organic nanotubes of bent-core based dendrimers. NANOSCALE ADVANCES 2021; 3:1682-1689. [PMID: 36132558 PMCID: PMC9418585 DOI: 10.1039/d0na00744g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 01/05/2021] [Indexed: 06/15/2023]
Abstract
Recently, bent-core molecules have emerged as excellent building blocks for the obtaining of nanostructures in solvents. Herein, we report the use of a coaxial microfluidic system as a promising tool to control the self-assembly of non-conventional bent-core amphiphiles. Moreover, a TEM study to comprehend the hierarchical self-assembly process in solution was carried out. The proposed tool provides both a cost-effective platform to save hard-to-synthesise reagents and a rapid method to screen a plethora of different parameters, i.e., THF/water ratio, residence time, concentration of the amphiphile, temperature and pH. The experiments allowed to test for the first time the suitability of microfluidics for the self-assembly of bent-core molecules, as well as the study of a range of conditions to control the assembly of different nanostructures in a rapid and controlled manner. Additionally, organic nanostructures were combined with gold nanoparticles to prepare nanocomposites with enhanced properties. Both organic and hybrid nanostructures were also obtained in the solid state. These results may inspire scientists working on supramolecular chemistry and bent-core molecules expanding the scope of microfluidic systems for the self-assembly of other low-molecular-weight compounds.
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Affiliation(s)
- Martín Castillo-Vallés
- Department of Organic Chemistry, Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
| | - Pilar Romero
- Department of Organic Chemistry, Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
| | - Víctor Sebastián
- Department of Chemical Engineering and Environmental Technology, Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, CIBER-BBN 28029-Madrid Spain
| | - M Blanca Ros
- Department of Organic Chemistry, Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza Zaragoza 50009 Spain
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Wang J, Li Y, Nie G. Multifunctional biomolecule nanostructures for cancer therapy. NATURE REVIEWS. MATERIALS 2021; 6:766-783. [PMID: 34026278 PMCID: PMC8132739 DOI: 10.1038/s41578-021-00315-x] [Citation(s) in RCA: 188] [Impact Index Per Article: 62.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/06/2021] [Indexed: 05/08/2023]
Abstract
Biomolecule-based nanostructures are inherently multifunctional and harbour diverse biological activities, which can be explored for cancer nanomedicine. The supramolecular properties of biomolecules can be precisely programmed for the design of smart drug delivery vehicles, enabling efficient transport in vivo, targeted drug delivery and combinatorial therapy within a single design. In this Review, we discuss biomolecule-based nanostructures, including polysaccharides, nucleic acids, peptides and proteins, and highlight their enormous design space for multifunctional nanomedicines. We identify key challenges in cancer nanomedicine that can be addressed by biomolecule-based nanostructures and survey the distinct biological activities, programmability and in vivo behaviour of biomolecule-based nanostructures. Finally, we discuss challenges in the rational design, characterization and fabrication of biomolecule-based nanostructures, and identify obstacles that need to be overcome to enable clinical translation.
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Affiliation(s)
- Jing Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, China, Beijing, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Yiye Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, China, Beijing, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China
| | - Guangjun Nie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials & Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, China, Beijing, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, China
- GBA Research Innovation Institute for Nanotechnology, Guangdong, China
- Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, China
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10
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Kitte SA, Tafese T, Xu C, Saqib M, Li H, Jin Y. Plasmon-enhanced quantum dots electrochemiluminescence aptasensor for selective and sensitive detection of cardiac troponin I. Talanta 2020; 221:121674. [PMID: 33076177 DOI: 10.1016/j.talanta.2020.121674] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 09/08/2020] [Accepted: 09/14/2020] [Indexed: 02/07/2023]
Abstract
The development of highly sensitive electrochemiluminescence (ECL) immunosensors by using functional nanoparticles as signal amplifiers is a solution towards sensitive determination of many low concentration disease biomarkers. Herein, a sensitive aptamer-based, sandwich-type surface plasmon enhanced electrochemiluminescence (SPEECL) immunosensor was demonstrated for the detection of cardiac troponin I (cTnI), by means of aptamer conjugated CdS QDs and AuNPs as ECL luminophores and plasmon sources, respectively, in which Tro4 aptamer was used as a capture probe for cTnI and Tro6 aptamer as a detecting probe. The signal of the developed SPEECL system showed ~ 5-fold increment as compared to that of without AuNPs. Using this ECL platform for the detection of cTnI, a linear range and the limit of detection (LOD) were found to be 1 fg/mL - 10 ng/mL and 0.75 fg/mL, respectively.
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Affiliation(s)
- Shimeles Addisu Kitte
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China; Department of Chemistry, College of Natural Sciences, Jimma University, P. O. Box 378, Jimma, Ethiopia
| | - Terefe Tafese
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China; University of Science and Technology of China, Hefei, 230026, PR China
| | - Chen Xu
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China; University of Science and Technology of China, Hefei, 230026, PR China
| | - Muhammad Saqib
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China
| | - Haijuan Li
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China
| | - Yongdong Jin
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, PR China; University of Science and Technology of China, Hefei, 230026, PR China.
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Li X, Yuan G, Yu W, Xing J, Zou Y, Zhao C, Kong W, Yu Z, Guo C. A self-driven microfluidic surface-enhanced Raman scattering device for Hg 2+ detection fabricated by femtosecond laser. LAB ON A CHIP 2020; 20:414-423. [PMID: 31867593 DOI: 10.1039/c9lc00883g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this paper, we proposed a novel approach for rapid and flexible fabrication of self-driven microfluidic surface enhanced Raman scattering (SERS) chips for quantitative analysis of Hg2+ by femtosecond laser direct writing. In contrast to traditional microfluidic chips, the microchannels of the device can drive a liquid sample flow without external driving force. The sample flow speed is tunable since the wettability and capillarity properties of the channels, which depend on the roughness and the inner diameter of the microchannels, can be controlled by optimizing the laser processing parameters. The SERS active detection sites, which exhibit high enhancement effects and fine reproducibility, were integrated through the femtosecond laser-induced periodic surface structures (LIPSS), followed by 30 nm Ag deposition. The SERS performance of the as-prepared microfluidic SERS detection chip was studied with R6G as probe molecules. The quantitative analysis of Hg2+ was realized by simply injecting the Hg2+ sample and the probe molecules R6G from the two inlets, separately, and collecting the SERS signal at the detection site. The lowest detection limit for Hg2+ is 10-9 M. It should be mentioned that this study is not only limited to Hg2+ quantitative analysis, but is also mainly aimed to develop a new technique for the design and fabrication of novel self-driven microfluidic devices depending on practical application requirements.
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Affiliation(s)
- Xiuyun Li
- The Guo China-US Photonics Laboratory, State Key Laboratory for Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Gan Yuan
- The Guo China-US Photonics Laboratory, State Key Laboratory for Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Weili Yu
- The Guo China-US Photonics Laboratory, State Key Laboratory for Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China.
| | - Jun Xing
- The Guo China-US Photonics Laboratory, State Key Laboratory for Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuting Zou
- The Guo China-US Photonics Laboratory, State Key Laboratory for Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chen Zhao
- The Guo China-US Photonics Laboratory, State Key Laboratory for Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wenchi Kong
- The Guo China-US Photonics Laboratory, State Key Laboratory for Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhi Yu
- The Guo China-US Photonics Laboratory, State Key Laboratory for Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China.
| | - Chunlei Guo
- The Guo China-US Photonics Laboratory, State Key Laboratory for Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China. and The Institute of Optics, University of Rochester, Rochester, NY 14627, USA.
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12
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Xie X, Wang L, Liu X, Du Z, Li Y, Li B, Wu L, Li W. Light-powered and transient peptide two-dimensional assembly driven by trans-to-cis isomerization of azobenzene side chains. Chem Commun (Camb) 2020; 56:1867-1870. [DOI: 10.1039/c9cc09448b] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A 2D dissipative system is initiated by photo-powered trans-to-cis isomerization of azobenzene, which usually results in the collapse of ordered assemblies.
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Affiliation(s)
- Xiaoming Xie
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Liang Wang
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Xiaohuan Liu
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Zhanglei Du
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Yiwen Li
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Bao Li
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
| | - Wen Li
- State Key Laboratory of Supramolecular Structure and Materials
- Institute of Theoretical Chemistry
- College of Chemistry
- Jilin University
- Changchun 130012
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13
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Bao W, Lyu J, Li C, Zhang J, Sun T, Wang X, Zhou J, Li D. Fabrication of Customized Nanogel Carriers From a UV-Triggered Dynamic Self-Assembly Strategy. Front Chem 2019; 7:769. [PMID: 31781547 PMCID: PMC6857700 DOI: 10.3389/fchem.2019.00769] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 10/24/2019] [Indexed: 11/26/2022] Open
Abstract
Recent advances in self-assembled nanogel carriers have allowed precise design of hierarchical structures by a low-cost solution-phase approach. Typically, photochemical strategy on the tailor of morphology and dimension has emerged as a powerful tool, because light-trigger has exceptional advantages of an instant "on/off" function and spatiotemporal precision at arbitrary time. Herein, we report a tunable manipulation of sequentially morphological transition via a "living" thiol-disulfide exchange reaction from a UV-tailored hierarchical self-assembly strategy. By varying the irradiation time, the photochemical method can easily fabricate and guide a series of attractively architectural evolution in dilute aqueous solutions, by which the improving hydrophobicity and sensitive redox-responsiveness endowed these disulfide-linked nanoparticles with remarkable capacities of abundant encapsulation, effective separation, and controlled release of hydrophobic cargoes. Notably, once the exchange reaction is suspended at any point of time by removing the UV lamp, these active sites within the nanogel carriers are instantaneous deactivated and the correspondingly structural transformations are also not conducted any more. However, if the stable inert sites are reactivated as needed by turning on the UV light, the interrupting morphology evolution can continue its previous steps, which may provide a simple and novel approach to fabricating the desired self-assemblies in solutions. With regard to this advanced functionality, various nanogel carriers with customizable structures and properties have been yielded and screened for cancer therapy. Thus, this "living" controlled self-assembled method to program morphology evolution in situ is a universal strategy that will pave novel pathways for creating sequential shape-shifting and size-growing nanostructures and constructing uniform nanoscopic functional entities for advanced bio-applications.
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Affiliation(s)
- Wuren Bao
- School of Nursing, Inner Mongolia University for Nationalities, Tongliao, China
| | - Jieran Lyu
- Clinical Medicine Academy of Shandong First Medical University, Tai′an, China
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Chunlin Li
- The 8th Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Jifeng Zhang
- Department of Orthopedic Surgery, Tongliao City Hospital, Tongliao, China
| | - Tunan Sun
- The 8th Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Xing Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jin Zhou
- The 8th Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Dawei Li
- The 8th Medical Center of Chinese PLA General Hospital, Beijing, China
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14
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Chen J, Yan K, Xiong S, Wei T, Wu X, Chu PK. Controlled fiberization of dipeptide in merging phases leads to collagen-level strength and opto/electric mechanofunctionalities. Biomaterials 2019; 208:1-7. [DOI: 10.1016/j.biomaterials.2019.04.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 03/26/2019] [Accepted: 04/06/2019] [Indexed: 01/21/2023]
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15
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Mason TO, Buell AK. The Kinetics, Thermodynamics and Mechanisms of Short Aromatic Peptide Self-Assembly. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1174:61-112. [PMID: 31713197 DOI: 10.1007/978-981-13-9791-2_3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The self-assembly of short aromatic peptides and peptide derivatives into a variety of different nano- and microstructures (fibrillar gels, crystals, spheres, plates) is a promising route toward the creation of bio-compatible materials with often unexpected and useful properties. Furthermore, such simple self-assembling systems have been proposed as model systems for the self-assembly of longer peptides, a process that can be linked to biological function and malfunction. Much effort has been made in the last 15 years to explore the space of peptide sequences, chemical modifications and solvent conditions in order to maximise the diversity of assembly morphologies and properties. However, quantitative studies of the corresponding mechanisms of, and driving forces for, peptide self-assembly have remained relatively scarce until recently. In this chapter we review the current state of understanding of the thermodynamic driving forces and self-assembly mechanisms of short aromatic peptides into supramolecular structures. We will focus on experimental studies of the assembly process and our perspective will be centered around diphenylalanine (FF), a key motif of the amyloid β sequence and a paradigmatic self-assembly building block. Our main focus is the basic physical chemistry and key structural aspects of such systems, and we will also compare the mechanism of dipeptide aggregation with that of longer peptide sequences into amyloid fibrils, with discussion on how these mechanisms may be revealed through detailed analysis of growth kinetics, thermodynamics and other fundamental properties of the aggregation process.
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Affiliation(s)
- Thomas O Mason
- Department of Materials and Interfaces, Weizmann Institute of Science, Rehovot, Israel
| | - Alexander K Buell
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DTU, Lyngby, Denmark.
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16
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Toprakcioglu Z, Challa PK, Levin A, Knowles TPJ. Observation of molecular self-assembly events in massively parallel microdroplet arrays. LAB ON A CHIP 2018; 18:3303-3309. [PMID: 30270398 DOI: 10.1039/c8lc00862k] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The self-assembly of peptide and protein molecules into nanoscale filaments is a process associated with both biological function and malfunction. Microfluidic techniques can provide powerful tools in the study of such aggregation phenomena while providing access to exploring the role of molecular interactions in disease development. Yet, a common challenge encountered in the study of protein aggregation is the difficulty in achieving spatial and temporal control of the underlying processes. Here, we present a planar (2-D) device allowing for both the generation and confinement of 10 000 monodisperse water-in-oil droplets in an array of chambers with a trapping efficiency of 99%. Due to the specific geometry of the device, droplets can be formed and immediately trapped on the same chip, without the need for continuous flow of the oil phase. Furthermore, we demonstrate the capability of this device as a platform to study the aggregation kinetics and determine stochastic molecular nanoscale self-assembly events in a highly parallel manner for the aggregation of the dipeptide, diphenylalanine, the core recognition motif of the Aβ-42 peptide associated with Alzheimer's disease. The ability to reproducibly generate and confine monodisperse water-in-oil droplets with an extremely high trapping efficiency while maintaining entrapment under zero-flow conditions, on timescales compatible with observing molecular self-assembly events, renders it promising for numerous potential further applications in the biological and biophysical fields.
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Affiliation(s)
- Zenon Toprakcioglu
- Centre for Misfolding Diseases, Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, UK.
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17
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Wang X, Gao P, Yang Y, Guo H, Wu D. Dynamic and programmable morphology and size evolution via a living hierarchical self-assembly strategy. Nat Commun 2018; 9:2772. [PMID: 30018381 PMCID: PMC6050331 DOI: 10.1038/s41467-018-05142-3] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Accepted: 06/11/2018] [Indexed: 01/14/2023] Open
Abstract
Recent advances in the preparation of shape-shifting and size-growing nanostructures are hot topics in development of nanoscience, because many intelligent functions are always relied on their shape and dimension. Here we report a tunable manipulation of sequential self-assembled transformation in situ via a hierarchical assembly strategy based on a living thiol-disulfide exchange reaction. By tailoring the external stimuli, the reactive points can be generated at the ends of initially unimolecular micelles, which subsequently drive the pre-assemblies to periodically proceed into the hierarchically micellar connection, axial growth, bending, and cyclization processes from nanoscopic assemblies to macroscopic particles. Of particular interest would be systems that acquired the shape control and size adjustment of self-assemblies after termination or reactivation of disulfide reshuffling reaction by regulating external stimuli whenever needed. Such a hierarchical strategy for self-assembled evolution is universally applicable not only for other disulfide-linked dendritic polymers but also for exploitation of biological applications.
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Affiliation(s)
- Xing Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Peiyuan Gao
- Pacific Northwest National Laboratory, Richland, 99352, WA, USA
| | - Yanyu Yang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- College of Materials Science and Engineering, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Hongxia Guo
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Decheng Wu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
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18
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Valverde LR, Thurston BA, Ferguson AL, Wilson WL. Evidence for Prenucleated Fibrilogenesis of Acid-Mediated Self-Assembling Oligopeptides via Molecular Simulation and Fluorescence Correlation Spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:7346-7354. [PMID: 29842783 DOI: 10.1021/acs.langmuir.8b00312] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
An important step in controlling biomimetic amyloid systems is understanding the self-assembly reaction kinetics. We are interested in a family of such materials characterized by symmetric sequences of amino acids flanking a π-conjugated functional core. Many of these materials rapidly self-assemble into long fibers upon protonation in an acidic environment. Despite extensive investigation of these materials' properties, little is yet understood regarding their reaction kinetics. Based on previous studies, we have chosen DFAG-4T-GAFD as a representative system and conducted molecular dynamics simulations to show that although large-scale assembly is induced by lowering pH, some degree of assembly is thermodynamically favorable in high-pH nonprotonating environments. These results are consistent with findings for other systems such as DFAG-OPV-GAFD. The nonprotonated aggregation also appears to be concentration dependent, occurring at concentrations of 100 nM and above. Single molecule measurements using fluorescence correlation spectroscopy provide experimental support for these computational predictions. We find evidence of spontaneous aggregation in aqueous solutions of peptides with concentrations as low as 100 nM; however, 10 nM solutions appear to be largely homogeneous solutions of unassembled monomer. These results indicate that the simplest explanations for kinetics of acid-mediated assembly-protonation-induced nucleation by monomeric addition followed by subsequent stages of aggregation and elongation-are inappropriate in this system. In fact, the system only exists as pure monomer in very low concentrations, nucleation actually occurs in the absence of protonating elements at concentrations typically used for experiments, and pH triggered assembly proceeds from these preassembled aggregates. Accordingly, triggered assembly must be considered to operate outside the domain of nucleation-dependent models.
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Affiliation(s)
- Lawrence R Valverde
- Department of Materials Science and Engineering , University of Illinois at Urbana-Champaign , 1304 West Green Street , Urbana , Illinois 61801 , United States
- Frederick Seitz Materials Research Laboratory , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
| | - Bryce A Thurston
- Department of Physics , University of Illinois at Urbana-Champaign , 1110 West Green Street , Urbana , Illinois 61801 , United States
| | - Andrew L Ferguson
- Department of Materials Science and Engineering , University of Illinois at Urbana-Champaign , 1304 West Green Street , Urbana , Illinois 61801 , United States
- Frederick Seitz Materials Research Laboratory , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
- Department of Chemical and Biomolecular Engineering , University of Illinois at Urbana-Champaign , 600 South Mathews Avenue , Urbana , Illinois 61801 , United States
- Department of Physics , University of Illinois at Urbana-Champaign , 1110 West Green Street , Urbana , Illinois 61801 , United States
| | - William L Wilson
- Department of Materials Science and Engineering , University of Illinois at Urbana-Champaign , 1304 West Green Street , Urbana , Illinois 61801 , United States
- Frederick Seitz Materials Research Laboratory , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
- Center for Nanoscale Systems, Faculty of Arts and Sciences , Harvard University , Cambridge , Massachusetts 02138 , United States
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19
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Sevim S, Sorrenti A, Franco C, Furukawa S, Pané S, deMello AJ, Puigmartí-Luis J. Self-assembled materials and supramolecular chemistry within microfluidic environments: from common thermodynamic states to non-equilibrium structures. Chem Soc Rev 2018; 47:3788-3803. [PMID: 29714390 PMCID: PMC5989397 DOI: 10.1039/c8cs00025e] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Indexed: 12/15/2022]
Abstract
Self-assembly is a crucial component in the bottom-up fabrication of hierarchical supramolecular structures and advanced functional materials. Control has traditionally relied on the use of encoded building blocks bearing suitable moieties for recognition and interaction, with targeting of the thermodynamic equilibrium state. On the other hand, nature leverages the control of reaction-diffusion processes to create hierarchically organized materials with surprisingly complex biological functions. Indeed, under non-equilibrium conditions (kinetic control), the spatio-temporal command of chemical gradients and reactant mixing during self-assembly (the creation of non-uniform chemical environments for example) can strongly affect the outcome of the self-assembly process. This directly enables a precise control over material properties and functions. In this tutorial review, we show how the unique physical conditions offered by microfluidic technologies can be advantageously used to control the self-assembly of materials and of supramolecular aggregates in solution, making possible the isolation of intermediate states and unprecedented non-equilibrium structures, as well as the emergence of novel functions. Selected examples from the literature will be used to confirm that microfluidic devices are an invaluable toolbox technology for unveiling, understanding and steering self-assembly pathways to desired structures, properties and functions, as well as advanced processing tools for device fabrication and integration.
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Affiliation(s)
- S. Sevim
- Institute for Chemical & Bioengineering
, Department of Chemistry & Applied Biosciences, ETH Zurich
,
Zurich 8093
, Switzerland
.
;
| | - A. Sorrenti
- Institute for Chemical & Bioengineering
, Department of Chemistry & Applied Biosciences, ETH Zurich
,
Zurich 8093
, Switzerland
.
;
| | - C. Franco
- Institute for Chemical & Bioengineering
, Department of Chemistry & Applied Biosciences, ETH Zurich
,
Zurich 8093
, Switzerland
.
;
| | - S. Furukawa
- Institute for Integrated Cell-Material Sciences (WPI-iCeMS)
, Kyoto University
, Yoshida
,
Sakyo-ku
, Kyoto 606-8501
, Japan
| | - S. Pané
- Multi-Scale Robotics Lab (MSRL)
, Institute of Robotics & Intelligent Systems (IRIS)
, ETH Zurich
,
Zurich 8092
, Switzerland
| | - A. J. deMello
- Institute for Chemical & Bioengineering
, Department of Chemistry & Applied Biosciences, ETH Zurich
,
Zurich 8093
, Switzerland
.
;
| | - J. Puigmartí-Luis
- Institute for Chemical & Bioengineering
, Department of Chemistry & Applied Biosciences, ETH Zurich
,
Zurich 8093
, Switzerland
.
;
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20
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Frederix PWJM, Patmanidis I, Marrink SJ. Molecular simulations of self-assembling bio-inspired supramolecular systems and their connection to experiments. Chem Soc Rev 2018; 47:3470-3489. [PMID: 29688238 PMCID: PMC5961611 DOI: 10.1039/c8cs00040a] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2018] [Indexed: 01/01/2023]
Abstract
In bionanotechnology, the field of creating functional materials consisting of bio-inspired molecules, the function and shape of a nanostructure only appear through the assembly of many small molecules together. The large number of building blocks required to define a nanostructure combined with the many degrees of freedom in packing small molecules has long precluded molecular simulations, but recent advances in computational hardware as well as software have made classical simulations available to this strongly expanding field. Here, we review the state of the art in simulations of self-assembling bio-inspired supramolecular systems. We will first discuss progress in force fields, simulation protocols and enhanced sampling techniques using recent examples. Secondly, we will focus on efforts to enable the comparison of experimentally accessible observables and computational results. Experimental quantities that can be measured by microscopy, spectroscopy and scattering can be linked to simulation output either directly or indirectly, via quantum mechanical or semi-empirical techniques. Overall, we aim to provide an overview of the various computational approaches to understand not only the molecular architecture of nanostructures, but also the mechanism of their formation.
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Affiliation(s)
- Pim W. J. M. Frederix
- Groningen Biomolecular Sciences and Biotechnology Institute and Zernike Institute for Advanced Materials , University of Groningen , Groningen , The Netherlands . ;
| | - Ilias Patmanidis
- Groningen Biomolecular Sciences and Biotechnology Institute and Zernike Institute for Advanced Materials , University of Groningen , Groningen , The Netherlands . ;
| | - Siewert J. Marrink
- Groningen Biomolecular Sciences and Biotechnology Institute and Zernike Institute for Advanced Materials , University of Groningen , Groningen , The Netherlands . ;
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21
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Mason TO, Michaels TCT, Levin A, Dobson CM, Gazit E, Knowles TPJ, Buell AK. Thermodynamics of Polypeptide Supramolecular Assembly in the Short-Chain Limit. J Am Chem Soc 2017; 139:16134-16142. [DOI: 10.1021/jacs.7b00229] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Thomas O. Mason
- Department of Chemistry, University of Cambridge, Cambridge CB2 1TN, United Kingdom
| | - Thomas C. T. Michaels
- Department of Chemistry, University of Cambridge, Cambridge CB2 1TN, United Kingdom
- Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Aviad Levin
- Department of Chemistry, University of Cambridge, Cambridge CB2 1TN, United Kingdom
| | | | - Ehud Gazit
- Department for Molecular Microbiology and Biotechnology, University of Tel Aviv, Tel Aviv 6997801, Israel
| | - Tuomas P. J. Knowles
- Department of Chemistry, University of Cambridge, Cambridge CB2 1TN, United Kingdom
| | - Alexander K. Buell
- Institute of Physical Biology, University of Düsseldorf, Düsseldorf 40225, Germany
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22
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Chen KH, Corro KA, Le SP, Nowick JS. X-ray Crystallographic Structure of a Giant Double-Walled Peptide Nanotube Formed by a Macrocyclic β-Sheet Containing Aβ16–22. J Am Chem Soc 2017; 139:8102-8105. [DOI: 10.1021/jacs.7b03890] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kevin H. Chen
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Kelsey A. Corro
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Stephanie P. Le
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - James S. Nowick
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
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23
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Single-Handed Helical Polybissilsesquioxane Nanotubes and Mesoporous Nanofibers Prepared by an External Templating Approach Using Low-Molecular-Weight Gelators. Gels 2017; 3:gels3010002. [PMID: 30920499 PMCID: PMC6318642 DOI: 10.3390/gels3010002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 12/09/2016] [Accepted: 12/15/2016] [Indexed: 01/04/2023] Open
Abstract
Chiral low-molecular-weight gelators (LMWGs) derived from amino acids can self-assemble into helical fibers and twisted/coiled nanoribbons by H-bonding and π⁻π interaction. Silica nanotubes with single-handed helices have been prepared using chiral LMWGs through sol⁻gel transcription. Molecular-scale chirality exists at the inner surfaces. Here, we discuss single-handed helical aromatic ring-bridged polybissilsesquioxane nanotubes and mesoporous nanofibers prepared using chiral LMWGs. This review aims at describing the formation mechanisms of the helical nanostructures, the origination of optical activity, and the applications for other helical nanomaterial preparation, mainly based on our group's results. The morphology and handedness can be controlled by changing the chirality and kinds of LMWGs and tuning the reaction conditions. The aromatic rings arrange in a partially crystalline structure. The optical activity of the polybissilsesquioxane nanotubes and mesoporous nanofibers originates from chiral defects, including stacking and twisting of aromatic groups, on the inner surfaces. They can be used as the starting materials for preparation of silica, silicon, carbonaceous, silica/carbon, and silicon carbide nanotubes.
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