1
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Le X, Gao T, Wang L, Wei F, Chen C, Zhao Y. Self-Assembly of Short Amphiphilic Peptides and Their Biomedical Applications. Curr Pharm Des 2022; 28:3546-3562. [PMID: 36424793 DOI: 10.2174/1381612829666221124103526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 10/22/2022] [Accepted: 11/01/2022] [Indexed: 11/26/2022]
Abstract
A series of functional biomaterials with different sizes and morphologies can be constructed through self-assembly, among which amphiphilic peptide-based materials have received intense attention. One main possible reason is that the short amphiphilic peptides can facilitate the formation of versatile materials and promote their further applications in different fields. Another reason is that the simple structure of amphiphilic peptides can help establish the structure-function relationship. This review highlights the recent advances in the self-assembly of two typical peptide species, surfactant-like peptides (SLPs) and peptides amphiphiles (PAs). These peptides can self-assemble into diverse nanostructures. The formation of these different nanostructures resulted from the delicate balance of varied non-covalent interactions. This review embraced each non-covalent interaction and then listed the typical routes for regulating these non-covalent interactions, then realized the morphologies modulation of the self-assemblies. Finally, their applications in some biomedical fields, such as the stabilization of membrane proteins, templating for nanofabrication and biomineralization, acting as the antibacterial and antitumor agents, hemostasis, and synthesis of melanin have been summarized. Further advances in the self-assembly of SLPs and PAs may focus on the design of functional materials with targeted properties and exploring their improved properties.
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Affiliation(s)
- Xiaosong Le
- State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao266580, China
| | - Tianwen Gao
- State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao266580, China
| | - Li Wang
- State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao266580, China
| | - Feng Wei
- State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao266580, China
| | - Cuixia Chen
- State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao266580, China
| | - Yurong Zhao
- State Key Laboratory of Heavy Oil Processing and the Centre for Bioengineering and Biotechnology, China University of Petroleum (East China), 66 Changjiang West Road, Qingdao266580, China
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2
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Banerjee A, Lu CY, Dutt M. A hybrid coarse-grained model for structure, solvation and assembly of lipid-like peptides. Phys Chem Chem Phys 2021; 24:1553-1568. [PMID: 34940778 DOI: 10.1039/d1cp04205j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reconstituted photosynthetic proteins which are activated upon exposure to solar energy hold enormous potential for powering future solid state devices and solar cells. The functionality and integration of these proteins into such devices has been successfully enabled by lipid-like peptides. Yet, a fundamental understanding of the organization of these peptides with respect to the photosynthetic proteins and themselves remains unknown and is critical for guiding the design of such light-activated devices. This study investigates the relative organization of one such peptide sequence V6K2 (V: valine and K: lysine) within assemblies. Given the expansive spatiotemporal scales associated with this study, a hybrid coarse-grained (CG) model which captures the structure, conformation and aggregation of the peptide is adopted. The CG model uses a combination of iterative Boltzmann inversion and force matching to provide insight into the relative organization of V6K2 in assemblies. The CG model reproduces the structure of a V6K2 peptide sequence along with its all atom (AA) solvation structure. The relative organization of multiple peptides in an assembly, as captured by CG simulations, is in agreement with corresponding results from AA simulations. Also, a backmapping procedure reintroduces the AA details of the peptides within the aggregates captured by the CG model to demonstrate the relative organization of the peptides. Furthermore, a large number of peptides self-assemble into an elongated micelle in the CG simulation, which is consistent with experimental findings. The coarse-graining procedure is tested for transferability to longer peptide sequences, and hence can be extended to other amphiphilic peptide sequences.
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Affiliation(s)
- Akash Banerjee
- Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA.
| | - Chien Yu Lu
- Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA.
| | - Meenakshi Dutt
- Chemical and Biochemical Engineering, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA.
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3
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Teodor AH, Thal LB, Vijayakumar S, Chan M, Little G, Bruce BD. Photosystem I integrated into mesoporous microspheres has enhanced stability and photoactivity in biohybrid solar cells. Mater Today Bio 2021; 11:100122. [PMID: 34401709 PMCID: PMC8350420 DOI: 10.1016/j.mtbio.2021.100122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 07/01/2021] [Accepted: 07/03/2021] [Indexed: 11/24/2022] Open
Abstract
Isolated proteins, especially membrane proteins, are susceptible to aggregation and activity loss after purification. For therapeutics and biosensors usage, protein stability and longevity are especially important. It has been demonstrated that photosystem I (PSI) can be successfully integrated into biohybrid electronic devices to take advantage of its strong light-driven reducing potential (-1.2V vs. the Standard Hydrogen Electrode). Most devices utilize PSI isolated in a nanosize detergent micelle, which is difficult to visualize, quantitate, and manipulate. Isolated PSI is also susceptible to aggregation and/or loss of activity, especially after freeze/thaw cycles. CaCO3 microspheres (CCMs) have been shown to be a robust method of protein encapsulation for industrial and pharmaceutical applications, increasing the stability and activity of the encapsulated protein. However, CCMs have not been utilized with any membrane protein(s) to date. Herein, we examine the encapsulation of detergent-solubilized PSI in CCMs yielding uniform, monodisperse, mesoporous microspheres. This study reports both the first encapsulation of a membrane protein and also the largest protein to date stabilized by CCMs. These microspheres retain their spectral properties and lumenal surface exposure and are active when integrated into hybrid biophotovoltaic devices. CCMs may be a robust yet simple solution for long-term storage of large membrane proteins, showing success for very large, multisubunit complexes like PSI.
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Affiliation(s)
- Alexandra H. Teodor
- Program in Genome Sciences and Technology, Oak Ridge National Laboratory and University of Tennessee, Knoxville, USA
| | - Lucas B. Thal
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, USA
| | - Shinduri Vijayakumar
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, USA
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, USA
| | - Madison Chan
- Department of Engineering Management, University of Tennessee, Chattanooga, USA
| | - Gabriela Little
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, USA
| | - Barry D. Bruce
- Program in Genome Sciences and Technology, Oak Ridge National Laboratory and University of Tennessee, Knoxville, USA
- Department of Biochemistry & Cellular and Molecular Biology, University of Tennessee, Knoxville, USA
- Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, USA
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4
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Tang PK, Manandhar A, Hu W, Kang M, Loverde SM. The Interaction of Supramolecular Anticancer Drug Amphiphiles with Phospholipid Membranes. NANOSCALE ADVANCES 2021; 3:370-382. [PMID: 33796816 PMCID: PMC8010983 DOI: 10.1039/d0na00697a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Accepted: 10/26/2020] [Indexed: 06/12/2023]
Abstract
The shape of drug delivery vehicles impacts both the circulation time and the effectiveness of the vehicle. Peptide-based drug amphiphiles (DAs) are promising new candidates as drug delivery vehicles that can self-assemble into shapes such as nanofilament and nanotube (diameter ~ 6-10 nm). The number of conjugated drugs affects the IC50 of these DAs, which is correlated to the effective cellular uptake. Characterizing and optimizing the interaction of these DAs and their assemblies with the cellular membrane is experimentally challenging. Long-time molecular dynamics can determine if the DA molecular structure affects the translocation across and interaction with the cellular membrane. Here, we report long-time atomistic simulation on Anton 2 (up to 25 μs) of these DAs with model cellular membranes. Results indicate that the interaction of these DAs with model cellular membranes is dependent on the number of conjugated drugs. We find that, with increased drug loading, the hydrophobic drug (camptothecin) builds up in the outer hydrophobic core of the membrane, pulling in positively charged peptide groups. Next, we computationally probe the interaction of differing shapes of these model drug delivery vehicles-nanofilament and nanotube-with the same model membranes, finding that the interaction of these nanostructures with the membrane is strongly repulsive. Results suggest that the hydrogen bond density between the nanostructure and the membrane may play a key role in modulating the interaction between the nanostructure and the membrane. Taken together, these results offer important insights for the rational design of peptide-based drug delivery vehicles.
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Affiliation(s)
- Phu K. Tang
- Department of Chemistry, College of Staten Island, City University of New York2800 Victory Blvd., 6S-238Staten IslandNY 10314USA
- Ph.D. Program in Biochemistry, The Graduate Center of the City University of New YorkNew YorkUSA
| | - Anjela Manandhar
- Department of Chemistry, College of Staten Island, City University of New York2800 Victory Blvd., 6S-238Staten IslandNY 10314USA
- Ph.D. Program in Biochemistry, The Graduate Center of the City University of New YorkNew YorkUSA
| | - William Hu
- Hunter College High SchoolNew YorkNY 10128USA
| | - Myungshim Kang
- Department of Chemistry, College of Staten Island, City University of New York2800 Victory Blvd., 6S-238Staten IslandNY 10314USA
| | - Sharon M. Loverde
- Department of Chemistry, College of Staten Island, City University of New York2800 Victory Blvd., 6S-238Staten IslandNY 10314USA
- Ph.D. Program in Biochemistry, The Graduate Center of the City University of New YorkNew YorkUSA
- Ph.D. Program in Chemistry and Physics, The Graduate Center of the City University of New YorkNew YorkUSA
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5
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Zhang S. Self-assembling peptides: From a discovery in a yeast protein to diverse uses and beyond. Protein Sci 2020; 29:2281-2303. [PMID: 32939884 PMCID: PMC7586918 DOI: 10.1002/pro.3951] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/11/2020] [Accepted: 09/15/2020] [Indexed: 12/11/2022]
Abstract
Well-defined nanofiber scaffold hydrogels made of self-assembling peptides have found their way into various 3D tissue culture and clinical products. I reflect initial puzzlement of the unexpected discovery, gradual understanding of how these peptides undergo self-assembly, to eventually translating designer biological scaffolds into commercial products. Peptides are ubiquitous in nature and useful in many fields. They are found as hormones, pheromones, antibacterial, and antifungal agents in innate immunity systems, toxins, as well anti-inset pesticides. However, the concept of peptides as materials was not recognized until 1990 when a self-assembling peptide as a repeating segment in a yeast protein was serendipitously discovered. The peptide materials have bona fide materials properties and are made from simple amino acids with well-ordered nanostructures under physiological conditions. Some current applications include: (a) Real 3D tissue cell cultures of diverse tissue cells and various stem cells; (b) reparative and regenerative medicine as well as tissue engineering; (c) 3D tissue printing; (d) sustained releases of small molecules, growth factors and monoclonal antibodies; and (e) accelerated wound healing of skin and diabetic ulcers as well as instant hemostasis in surgery. Self-assembling peptide nanobiotechnology will likely continue to expand in many directions in the coming years. I will also briefly introduce my current research using a simple QTY code for membrane protein design. I am greatly honored and humbled to be invited to contribute an Award Winner Recollection of the 2020 Emil Thomas Kaiser Award from the Protein Society.
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Affiliation(s)
- Shuguang Zhang
- Laboratory of Molecular ArchitectureMedia Lab, Massachusetts Institute of Technology77 Massachusetts Avenue E15‐391CambridgeMassachusetts02139‐4306USA
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6
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Surfactant-like peptides: From molecular design to controllable self-assembly with applications. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213418] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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7
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Teodor AH, Bruce BD. Putting Photosystem I to Work: Truly Green Energy. Trends Biotechnol 2020; 38:1329-1342. [PMID: 32448469 DOI: 10.1016/j.tibtech.2020.04.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 04/07/2020] [Accepted: 04/08/2020] [Indexed: 12/16/2022]
Abstract
Meeting growing energy demands sustainably is one of the greatest challenges facing the world. The sun strikes the Earth with sufficient energy in 1.5 h to meet annual world energy demands, likely making solar energy conversion part of future sustainable energy production plans. Photosynthetic organisms have been evolving solar energy utilization strategies for nearly 3.5 billion years, making reaction centers including the remarkably stable Photosystem I (PSI) especially interesting for biophotovoltaic device integration. Although these biohybrid devices have steadily improved, their output remains low compared with traditional photovoltaics. We discuss strategies and methods to improve PSI-based biophotovoltaics, focusing on PSI-surface interaction enhancement, electrolytes, and light-harvesting enhancement capabilities. Desirable features and current drawbacks to PSI-based devices are also discussed.
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Affiliation(s)
- Alexandra H Teodor
- Graduate School of Genome Science and Technology, University of Tennessee at Knoxville, Knoxville, TN 37996, USA; Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
| | - Barry D Bruce
- Graduate School of Genome Science and Technology, University of Tennessee at Knoxville, Knoxville, TN 37996, USA; Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA; Department of Biochemistry, Cellular, and Molecular Biology, University of Tennessee at Knoxville, Knoxville, TN 37996, USA; Department of Chemical and Biomolecular Engineering, University of Tennessee at Knoxville, Knoxville, TN 37996, USA.
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8
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Bozovičar K, Bratkovič T. Evolving a Peptide: Library Platforms and Diversification Strategies. Int J Mol Sci 2019; 21:E215. [PMID: 31892275 PMCID: PMC6981544 DOI: 10.3390/ijms21010215] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 12/22/2019] [Accepted: 12/25/2019] [Indexed: 12/22/2022] Open
Abstract
Peptides are widely used in pharmaceutical industry as active pharmaceutical ingredients, versatile tools in drug discovery, and for drug delivery. They find themselves at the crossroads of small molecules and proteins, possessing favorable tissue penetration and the capability to engage into specific and high-affinity interactions with endogenous receptors. One of the commonly employed approaches in peptide discovery and design is to screen combinatorial libraries, comprising a myriad of peptide variants of either chemical or biological origin. In this review, we focus mainly on recombinant peptide libraries, discussing different platforms for their display or expression, and various diversification strategies for library design. We take a look at well-established technologies as well as new developments and future directions.
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Affiliation(s)
| | - Tomaž Bratkovič
- Department of Pharmaceutical Biology, Faculty of Pharmacy, University of Ljubljana, Aškerčeva Cesta 7, SI-1000 Ljubljana, Slovenia;
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9
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Manandhar A, Chakraborty K, Tang PK, Kang M, Zhang P, Cui H, Loverde SM. Rational Coarse-Grained Molecular Dynamics Simulations of Supramolecular Anticancer Nanotubes. J Phys Chem B 2019; 123:10582-10593. [DOI: 10.1021/acs.jpcb.9b07417] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Anjela Manandhar
- Department of Chemistry, College of Staten Island, City University of New York, New York 10314, United States
- Ph.D. Program in Biochemistry, The Graduate Center of the City University of New York, New York 10016, United States
| | - Kaushik Chakraborty
- Ph.D. Program in Biochemistry, The Graduate Center of the City University of New York, New York 10016, United States
| | - Phu K. Tang
- Department of Chemistry, College of Staten Island, City University of New York, New York 10314, United States
- Ph.D. Program in Biochemistry, The Graduate Center of the City University of New York, New York 10016, United States
| | - Myungshim Kang
- Ph.D. Program in Biochemistry, The Graduate Center of the City University of New York, New York 10016, United States
| | - Pengcheng Zhang
- Center of Pharmaceutics, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
| | - Honggang Cui
- Department of Chemical and Biomolecular Engineering and Institute for NanoBioTechnology, The Johns Hopkins University, Baltimore, Maryland 21218, United States
- Department of Oncology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Sharon M. Loverde
- Department of Chemistry, College of Staten Island, City University of New York, New York 10314, United States
- Ph.D. Program in Biochemistry, The Graduate Center of the City University of New York, New York 10016, United States
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10
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Qiu F, Chen Y, Tang C, Zhao X. Amphiphilic peptides as novel nanomaterials: design, self-assembly and application. Int J Nanomedicine 2018; 13:5003-5022. [PMID: 30214203 PMCID: PMC6128269 DOI: 10.2147/ijn.s166403] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Designer self-assembling peptides are a category of emerging nanobiomaterials which have been widely investigated in the past decades. In this field, amphiphilic peptides have received special attention for their simplicity in design and versatility in application. This review focuses on recent progress in designer amphiphilic peptides, trying to give a comprehensive overview about this special type of self-assembling peptides. By exploring published studies on several typical types of amphiphilic peptides in recent years, herein we discuss in detail the basic design, self-assembling behaviors and the mechanism of amphiphilic peptides, as well as how their nanostructures are affected by the peptide characteristics or environmental parameters. The applications of these peptides as potential nanomaterials for nanomedicine and nanotechnology are also summarized.
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Affiliation(s)
- Feng Qiu
- Laboratory of Anaesthesia and Critical Care Medicine, Translational Neuroscience Centre, West China Hospital, Sichuan University, Chengdu 610041, China, .,Institute for Nanobiomedical Technology and Membrane Biology, West China Hospital, Sichuan University, Chengdu 610041, China, ,
| | - Yongzhu Chen
- Institute for Nanobiomedical Technology and Membrane Biology, West China Hospital, Sichuan University, Chengdu 610041, China, , .,Periodical Press of West China Hospital, Sichuan University, Chengdu 610041, China
| | - Chengkang Tang
- Institute for Nanobiomedical Technology and Membrane Biology, West China Hospital, Sichuan University, Chengdu 610041, China, , .,Core Facility of West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xiaojun Zhao
- Institute for Nanobiomedical Technology and Membrane Biology, West China Hospital, Sichuan University, Chengdu 610041, China, ,
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11
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Edwards-Gayle CJC, Hamley IW. Self-assembly of bioactive peptides, peptide conjugates, and peptide mimetic materials. Org Biomol Chem 2018; 15:5867-5876. [PMID: 28661532 DOI: 10.1039/c7ob01092c] [Citation(s) in RCA: 118] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Molecular self-assembly is a multi-disciplinary field of research, with potential chemical and biological applications. One of the main driving forces of self-assembly is molecular amphiphilicity, which can drive formation of complex and stable nanostructures. Self-assembling peptide and peptide conjugates have attracted great attention due to their biocompatibility, biodegradability and biofunctionality. Understanding assembly enables the better design of peptide amphiphiles which may form useful and functional nanostructures. This review covers self-assembly of amphiphilic peptides and peptide mimetic materials, as well as their potential applications.
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Affiliation(s)
| | - Ian W Hamley
- Department of Chemistry, University of Reading, Whiteknights, Reading, RG6 6AD, UK.
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12
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Kornmueller K, Lehofer B, Leitinger G, Amenitsch H, Prassl R. Peptide self-assembly into lamellar phases and the formation of lipid-peptide nanostructures. NANO RESEARCH 2018; 11:913-928. [PMID: 29372005 PMCID: PMC5777605 DOI: 10.1007/s12274-017-1702-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Lipids exhibit an extraordinary polymorphism in self-assembled mesophases, with lamellar phases as biologically most relevant representative. To mimic lipid lamellar phases with amphiphilic designer peptides, seven systematically varied short peptides were engineered. Indeed, four peptide candidates (V4D, V4WD, V4WD2, I4WD2) readily self-assembled into lamellae in aqueous solution: small-angle X-ray scattering patterns (SAXS) revealed ordered lamellar structures with a repeat distance of ~4-5 nm. Transmission electron microscopy (TEM) images confirmed the presence of stacked sheets. Two derivatives (V3D and V4D2) remained as loose aggregates dispersed in solution; one peptide (L4WD2) formed twisted tapes with internal lamellae and an antiparallel β-type monomer alignment. To understand the interaction of peptides with lipids they were mixed with phosphatidylcholines. Low peptide concentrations (1.1 mM) induced the formation of a heterogeneous mixture of vesicular structures: large multilamellar vesicles (d-spacing ~6.3 nm) coexisted with oligo- or unilamellar vesicles (~50 nm in diameter) and bicelle-like structures (~45 nm length, ~18 nm width). High peptide concentrations (11 mM) led to unilamellar vesicles (ULV, diameter ~260-280 nm) with a homogeneous mixing of lipids and peptides. SAXS revealed the temperature-dependent fine structure of these ULVs: at 25 °C the bilayer is in a fully interdigitated state (headgroup-to-headgroup distance dhh ~2.9 nm), whereas at 50 °C this interdigitation opens up (dhh ~3.6 nm). Our results highlight the versatility of self-assembled peptide superstructures: subtle changes in the amino acid composition are key design elements in creating peptide- or lipid-peptide nanostructures with the same richness in morphology as known from the lipid-world.
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Affiliation(s)
- Karin Kornmueller
- Institute of Biophysics, Medical University of Graz,
BioTechMed-Graz, Graz 8010, Austria
| | - Bernhard Lehofer
- Institute of Biophysics, Medical University of Graz,
BioTechMed-Graz, Graz 8010, Austria
| | - Gerd Leitinger
- Institute of Cell Biology, Histology and Embryology, Research Unit
Electron Microscopic Techniques, Medical University of Graz, Graz 8010,
Austria
| | - Heinz Amenitsch
- Institute of Inorganic Chemistry, Graz University of Technology,
Graz 8010, Austria
| | - Ruth Prassl
- Institute of Biophysics, Medical University of Graz,
BioTechMed-Graz, Graz 8010, Austria
- Address correspondence to Ruth Prassl,
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13
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Abstract
Peptides are ubiquitous in nature and useful in many fields, from agriculture as pesticides, in medicine as antibacterial and antifungal drugs founded in the innate immune systems, to medicinal chemistry as hormones. However, the concept of peptides as materials was not recognized until 1990 when a self-assembling peptide as a repeating segment in a yeast protein was serendipitously discovered. Peptide materials are so called because they have bona fide materials property and are made from simple amino acids with well-ordered nanostructures under physiological conditions. These structures include well-ordered nanofibres, nanotubes and nanovesicles. These peptide materials have been used for: (i) three-dimensional tissue cell cultures of primary cells and stem cells, (ii) three-dimensional tissue printing, (iii) sustained releases of small molecules, growth factors, monoclonal antibody and siRNA, (iv) accelerated wound healing in reparative and regenerative medicine as well as tissue engineering, (v) used to stabilize membrane proteins including difficult G-protein coupled receptors and photosystem I for designing nanobiodevices, (vi) a few self-assembling peptides have been used in human clinical trials for accelerated wound healings in surgical uses and (vii) in human clinical trials for siRNA delivery for treatment of cancers. It is likely that these self-assembling peptides will open doors for more and more diverse uses. The field of self-assembling peptides is growing in a number of directions in areas of materials, synthetic biology, and clinical medicine and beyond.
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Affiliation(s)
- Shuguang Zhang
- Laboratory of Molecular Architecture, Canter for Bits and Atoms, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA
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14
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Veith K, Martinez Molledo M, Almeida Hernandez Y, Josts I, Nitsche J, Löw C, Tidow H. Lipid-like Peptides can Stabilize Integral Membrane Proteins for Biophysical and Structural Studies. Chembiochem 2017; 18:1735-1742. [PMID: 28603929 PMCID: PMC5601290 DOI: 10.1002/cbic.201700235] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Indexed: 12/30/2022]
Abstract
A crucial bottleneck in membrane protein structural biology is the difficulty in identifying a detergent that can maintain the stability and functionality of integral membrane proteins (IMPs). Detergents are poor membrane mimics, and their common use in membrane protein crystallography may be one reason for the challenges in obtaining high-resolution crystal structures of many IMP families. Lipid-like peptides (LLPs) have detergent-like properties and have been proposed as alternatives for the solubilization of G protein-coupled receptors and other membrane proteins. Here, we systematically analyzed the stabilizing effect of LLPs on integral membrane proteins of different families. We found that LLPs could significantly stabilize detergent-solubilized IMPs in vitro. This stabilizing effect depended on the chemical nature of the LLP and the intrinsic stability of a particular IMP in the detergent. Our results suggest that screening a subset of LLPs is sufficient to stabilize a particular IMP, which can have a substantial impact on the crystallization and quality of the crystal.
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Affiliation(s)
- Katharina Veith
- The Hamburg Centre for Ultrafast ImagingDepartment of ChemistryInstitute for Biochemistry and Molecular BiologyUniversity of HamburgMartin-Luther-King-Platz 620146HamburgGermany
| | - Maria Martinez Molledo
- Centre for Structural Systems Biology (CSSB)DESY and European Molecular Biology Laboratory HamburgNotkestrasse 8522607HamburgGermany
| | - Yasser Almeida Hernandez
- The Hamburg Centre for Ultrafast ImagingDepartment of ChemistryInstitute for Biochemistry and Molecular BiologyUniversity of HamburgMartin-Luther-King-Platz 620146HamburgGermany
| | - Inokentijs Josts
- The Hamburg Centre for Ultrafast ImagingDepartment of ChemistryInstitute for Biochemistry and Molecular BiologyUniversity of HamburgMartin-Luther-King-Platz 620146HamburgGermany
| | - Julius Nitsche
- The Hamburg Centre for Ultrafast ImagingDepartment of ChemistryInstitute for Biochemistry and Molecular BiologyUniversity of HamburgMartin-Luther-King-Platz 620146HamburgGermany
| | - Christian Löw
- Centre for Structural Systems Biology (CSSB)DESY and European Molecular Biology Laboratory HamburgNotkestrasse 8522607HamburgGermany
- Department of Medical Biochemistry and BiophysicsKarolinska InstitutetScheeles väg 217177StockholmSweden
| | - Henning Tidow
- The Hamburg Centre for Ultrafast ImagingDepartment of ChemistryInstitute for Biochemistry and Molecular BiologyUniversity of HamburgMartin-Luther-King-Platz 620146HamburgGermany
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15
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Wang HF, Wibowo D, Shao Z, Middelberg APJ, Zhao CX. Design of Modular Peptide Surfactants and Their Surface Activity. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:7957-7967. [PMID: 28732169 DOI: 10.1021/acs.langmuir.7b01382] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Designed peptide surfactants offer a number of advanced properties over conventional petrochemical surfactants, including biocompatibility, sustainability, and tailorability of the chemical and physical properties through peptide design. Their biocompatibility and degradability make them attractive for various applications, particularly for food and pharmaceutical applications. In this work, two new peptide surfactants derived from an amphiphilic peptide surfactant (AM1) were designed (AM-S and C8-AM) to better understand links between structure, interfacial activity, and emulsification. Based on AM1, which has an interfacial α-helical structure, AM-S and C8-AM were designed to have two modules, that is, the α-helical AM1 module and an additional hydrophobic moiety to provide for better anchoring at the oil-water interface. Both AM-S and C8-AM at low bulk concentration of 20 μM were able to adsorb rapidly at the oil-water interface and reduced interfacial tension to equilibrium values of 17.0 and 8.4 mN/m within 400 s, respectively. Their relatively quick adsorption kinetics allowed the formation of nanoemulsions with smaller droplet sizes and narrower size distribution. AM-S and C8-AM at 800 μM bulk concentration could make nanoemulsions of average diameters 180 and 147 nm, respectively, by simple sonication. With respect to the long-term stability, a minimum peptide concentration of 400 μM for AM-S and a lower concentration of 100 μM for C8-AM were demonstrated to effectively stabilize nanoemulsions over 3 weeks. Compared to AM1, the AM-S nanoemulsion retained its stimuli-responsive function triggered by metal ions, whereas the C8-AM nanoemulsions did not respond to the stimuli as efficiently as AM-S because of the strong anchoring ability of the hydrophobic C8 module. The two-module design of AM-S and C8-AM represents a new strategy in tuning the surface activity of peptide surfactants, offering useful information and guidance of future designs.
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Affiliation(s)
- Hao-Fei Wang
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St Lucia QLD 4072, Australia
| | - David Wibowo
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St Lucia QLD 4072, Australia
| | - Zhengzhong Shao
- State Key Laboratory of Molecular Engineering of Polymers, Laboratory of Advanced Materials and Department of Macromolecular Science, Fudan University , Shanghai 200433, China
| | - Anton P J Middelberg
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St Lucia QLD 4072, Australia
| | - Chun-Xia Zhao
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland , St Lucia QLD 4072, Australia
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16
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Koeda S, Suzuki T, Noji T, Kawakami K, Itoh S, Dewa T, Kamiya N, Mizuno T. Rational design of novel high molecular weight solubilization surfactants for membrane proteins from the peptide gemini surfactants (PG-surfactants). Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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17
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Shibata M, Koeda S, Noji T, Kawakami K, Ido Y, Amano Y, Umezawa N, Higuchi T, Dewa T, Itoh S, Kamiya N, Mizuno T. Design of New Extraction Surfactants for Membrane Proteins from Peptide Gemini Surfactants. Bioconjug Chem 2016; 27:2469-2479. [PMID: 27571354 DOI: 10.1021/acs.bioconjchem.6b00417] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The development of additional extraction surfactants for membrane proteins is necessary for membrane protein research, since optimal combinations for the successful extraction of target membrane proteins from biological membranes that minimize protein denaturation are hard to predict. In particular, those that have a unique basal molecular framework are quite attractive and highly desired in this research field. In this study, we successfully constructed a new extraction surfactant for membrane proteins, NPDGC12KK, from the peptide-gemini-surfactant (PG-surfactant) molecular framework. The PG-surfactant is a U-shaped lipopeptide scaffold, consisting of a short linker peptide (-X-) between two long alkyl-chain-modified Cys residues and a peripheral peptide (Y-) at the N-terminal side of long alkyl-chain-modified Cys residues. Using photosystem I (PSI) and photosystem II (PSII) derived from Thermosynecoccus vulcanus as representative membrane proteins, we evaluated whether NPDGC12KK could solubilize membrane proteins while maintaining structure and functions. Neither the membrane integral domain nor the cytoplasmic domain of PSI and PSII suffered any damage upon the use of NPDGC12KK based on detailed photophysical measurements. Using thylakoid membranes of T. vulcanus as a representative biological membrane sample, we performed experiments to extract membrane proteins, such as PSI and PSII. Based on the extraction efficiency and maintenance of protein supramolecular structure established using clear native-PAGE analyses, we proved that NPDGC12KK functions as a novel class of peptide-containing extraction surfactants for membrane proteins.
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Affiliation(s)
- Masahide Shibata
- Graduate School of Engineering, Nagoya Institute of Technology , Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Shuhei Koeda
- Graduate School of Engineering, Nagoya Institute of Technology , Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Tomoyasu Noji
- Osaka City University , The OCU Advanced Research Institute for Natural Science & Technology (OCARINA), 3-3-138 Sugimoto-cho, Sumiyoshi, Osaka 558-8585, Japan
| | - Keisuke Kawakami
- Osaka City University , The OCU Advanced Research Institute for Natural Science & Technology (OCARINA), 3-3-138 Sugimoto-cho, Sumiyoshi, Osaka 558-8585, Japan
| | - Yuya Ido
- Graduate School of Engineering, Nagoya Institute of Technology , Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Yuichi Amano
- Graduate School of Pharmaceutical Sciences, Nagoya City University , 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
| | - Naoki Umezawa
- Graduate School of Pharmaceutical Sciences, Nagoya City University , 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
| | - Tsunehiko Higuchi
- Graduate School of Pharmaceutical Sciences, Nagoya City University , 3-1 Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan
| | - Takehisa Dewa
- Graduate School of Engineering, Nagoya Institute of Technology , Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
| | - Shigeru Itoh
- Graduate School of Science, Nagoya University , Furo-cho, Chikusa-ku Nagoya, Aichi 464-8602, Japan
| | - Nobuo Kamiya
- Osaka City University , The OCU Advanced Research Institute for Natural Science & Technology (OCARINA), 3-3-138 Sugimoto-cho, Sumiyoshi, Osaka 558-8585, Japan
| | - Toshihisa Mizuno
- Graduate School of Engineering, Nagoya Institute of Technology , Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
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18
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Koutsopoulos S. Self-assembling peptide nanofiber hydrogels in tissue engineering and regenerative medicine: Progress, design guidelines, and applications. J Biomed Mater Res A 2016; 104:1002-16. [DOI: 10.1002/jbm.a.35638] [Citation(s) in RCA: 151] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 11/30/2015] [Accepted: 12/22/2015] [Indexed: 01/09/2023]
Affiliation(s)
- Sotirios Koutsopoulos
- Center for Biomedical Engineering; Massachusetts Institute of Technology; Cambridge Massachusetts 02139
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19
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Karavasili C, Spanakis M, Papagiannopoulou D, Vizirianakis IS, Fatouros DG, Koutsopoulos S. Bioactive self-assembling lipid-like peptides as permeation enhancers for oral drug delivery. J Pharm Sci 2015; 104:2304-11. [PMID: 25994901 DOI: 10.1002/jps.24484] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 04/12/2015] [Accepted: 04/16/2015] [Indexed: 01/28/2023]
Abstract
Amphiphilic, lipid-like, self-assembling peptides are functional biomaterials with surfactant properties. In this work, lipid-like peptides were designed to have a hydrophilic head composed of aspartic acid or lysine and a six alanine residue hydrophobic domain and have a length similar to that of biological lipids. The aim of this work was to examine the potential of using ac-A6 K-CONH2 , KA6 -CONH2 , ac-A6 D-COOH, and DA6 -COOH lipid-like peptides as permeability enhancers to facilitate transport through the intestinal barrier. In vitro transport studies of the macromolecular fluorescent marker fluorescein isothiocyanate (FITC)-dextran (4.4 kDa) through Caco-2 cell monolayers show the permeation enhancement ability of the lipid-like peptides. We observed increased FITC-dextran transport across the epithelial monolayer up to 7.6-fold in the presence of lipid-like peptides. Furthermore, we monitored the transepithelial resistance and performed immunofluorescence studies of the cell tight junctions. Ex vivo studies showed increased mucosal to serosal absorption of FITC-dextran in rat jejunum in the presence of the ac-A6 D-COOH peptide. Furthermore, a small increase in the serosal transport of bovine serum albumin was observed upon addition of ac-A6 D-COOH. Lipid-like peptides are biocompatible and they do not affect epithelial cell viability and epithelial monolayer integrity. Our results suggest that short, lipid-like peptides may be used as permeation enhancers to facilitate oral delivery of diagnostic and therapeutic molecules.
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Affiliation(s)
- Christina Karavasili
- School of Pharmacy, Aristotle University of Thessaloniki, Department of Pharmaceutical Technology, Thessaloniki, GR-54124, Greece
| | - Marios Spanakis
- School of Pharmacy, Aristotle University of Thessaloniki, Department of Pharmacology and Molecular Biology, Thessaloniki, GR-54124, Greece
| | - Dionysia Papagiannopoulou
- School of Pharmacy, Aristotle University of Thessaloniki, Department of Pharmaceutical Chemistry, Thessaloniki, GR-54124, Greece
| | - Ioannis S Vizirianakis
- School of Pharmacy, Aristotle University of Thessaloniki, Department of Pharmacology and Molecular Biology, Thessaloniki, GR-54124, Greece
| | - Dimitrios G Fatouros
- School of Pharmacy, Aristotle University of Thessaloniki, Department of Pharmaceutical Technology, Thessaloniki, GR-54124, Greece
| | - Sotirios Koutsopoulos
- Center for Biomedical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139
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20
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Chen Y, Tang C, Zhang J, Gong M, Su B, Qiu F. Self-assembling surfactant-like peptide A6K as potential delivery system for hydrophobic drugs. Int J Nanomedicine 2015; 10:847-58. [PMID: 25670898 PMCID: PMC4315539 DOI: 10.2147/ijn.s71696] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Background Finding a suitable delivery system to improve the water solubility of hydrophobic drugs is a critical challenge in the development of effective formulations. In this study, we used A6K, a self-assembling surfactant-like peptide, as a carrier to encapsulate and deliver hydrophobic pyrene. Methods Pyrene was mixed with A6K by magnetic stirring to form a suspension. Confocal laser scanning microscopy, transmission electron microscopy, dynamic light scattering, atomic force microscopy, fluorescence, and cell uptake measurements were carried out to study the features and stability of the nanostructures, the state and content of pyrene, as well as the pyrene release profile. Results The suspension formed contained pyrene monomers trapped in the hydrophobic cores of the micellar nanofibers formed by A6K, as well as nanosized pyrene crystals wrapped up and stabilized by the nanofibers. The two different encapsulation methods greatly increased the concentration of pyrene in the suspension, and formation of pyrene crystals wrapped up by A6K nanofibers might be the major contributor to this effect. Furthermore, the suspension system could readily release and transfer pyrene into living cells. Conclusion A6K could be further exploited as a promising delivery system for hydrophobic drugs.
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Affiliation(s)
- Yongzhu Chen
- Periodical Press, Sichuan University, Chengdu, People's Republic of China
| | - Chengkang Tang
- Core Facility of West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Jie Zhang
- Core Facility of West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Meng Gong
- Laboratory of Endocrinology and Metabolism, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Bo Su
- Core Facility of West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Feng Qiu
- Laboratory of Anaesthesia and Critical Care Medicine, Translational Neuroscience Centre, West China Hospital, Sichuan University, Chengdu, People's Republic of China
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21
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Yu D, Huang G, Xu F, Ge B, Liu S, Xu H, Huang F. Effect of surfactants on apparent oxygen consumption of photosystem I isolated from Arthrospira platensis. PHOTOSYNTHESIS RESEARCH 2014; 122:203-213. [PMID: 24947956 DOI: 10.1007/s11120-014-0022-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 05/29/2014] [Indexed: 06/03/2023]
Abstract
Surfactants play a significant role in solubilization of photosystem I (PSI) in vitro. Triton X-100 (TX), n-Dodecyl-β-D-maltoside (DDM), and sodium dodecyl sulfate (SDS) were employed to solubilize PSI particles in MES buffer to compare the effect of surfactant and its dosage on the apparent oxygen consumption rate of PSI. Through a combined assessment of sucrose density gradient centrifugation, Native PAGE and 77 K fluorescence with the apparent oxygen consumption, the nature of the enhancement of the apparent oxygen consumption activity of PSI by surfactants has been analyzed. Aggregated PSI particles can be dispersed by surfactant molecules into micelles, and the apparent oxygen consumption rate is higher for surfactant-solubilized PSI than for integral PSI particles. For DDM, PSI particles are solubilized mostly as the integral trimeric form. For TX, PSI particles are solubilized as incomplete trimeric and some monomeric forms. For the much harsher surfactant, SDS, PSI particles are completely solubilized as monomeric and its subunit forms. The enhancement of the oxygen consumption rate cannot be explained only by the effects of surfactant on the equilibrium between monomeric and trimeric forms of solubililized PSI. Care must be taken when the electron transfer activity of PSI is evaluated by methods based on oxygen consumption because the apparent oxygen consumption rate is influenced by uncoupled chlorophyll (Chl) from PSI, i.e., the larger the amount of uncoupled Chl, the higher the rate of apparent oxygen consumption. 77 K fluorescence spectra can be used to ensure that there is no uncoupled Chl present in the system. In order to eliminate the effect of trace uncoupled Chl, an efficient physical quencher of (1)O2, such as 1 mM NaN3, may be added into the mixture.
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Affiliation(s)
- Daoyong Yu
- State Key Laboratory of Heavy Oil Processing, Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, 266580, Shandong, China,
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22
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Fatouros D, Lamprou DA, Urquhart AJ, Yannopoulos SN, Vizirianakis IS, Zhang S, Koutsopoulos S. Lipid-like self-assembling peptide nanovesicles for drug delivery. ACS APPLIED MATERIALS & INTERFACES 2014; 6:8184-9. [PMID: 24821330 PMCID: PMC4059226 DOI: 10.1021/am501673x] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 05/12/2014] [Indexed: 05/19/2023]
Abstract
Amphiphilic self-assembling peptides are functional materials, which, depending on the amino acid sequence, the peptide length, and the physicochemical conditions, form a variety of nanostructures including nanovesicles, nanotubes, and nanovalves. We designed lipid-like peptides with an aspartic acid or lysine hydrophilic head and a hydrophobic tail composed of six alanines (i.e., ac-A6K-CONH2, KA6-CONH2, ac-A6D-COOH, and DA6-COOH). The resulting novel peptides have a length similar to biological lipids and form nanovesicles at physiological conditions. AFM microscopy and light scattering analyses of the positively charged lipid-like ac-A6K-CONH2, KA6-CONH2 peptide formulations showed individual nanovesicles. The negatively charged ac-A6D-COOH and DA6-COOH peptides self-assembled into nanovesicles that formed clusters that upon drying were organized into necklace-like formations of nanovesicles. Encapsulation of probe molecules and release studies through the peptide bilayer suggest that peptide nanovesicles may be good candidates for sustained release of pharmaceutically active hydrophilic and hydrophobic compounds. Lipid-like peptide nanovesicles represent a paradigm shifting system that may complement liposomes for the delivery of diagnostic and therapeutic agents.
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Affiliation(s)
- Dimitrios
G. Fatouros
- School
of Pharmacy, Aristotle University of Thessaloniki, GR-54124 Thessaloniki, Greece
| | - Dimitrios A. Lamprou
- Strathclyde
Institute of Pharmacy and Biomedical Sciences (SIPBS), University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, United Kingdom
| | - Andrew J. Urquhart
- Strathclyde
Institute of Pharmacy and Biomedical Sciences (SIPBS), University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, United Kingdom
| | - Spyros N. Yannopoulos
- Foundation
for Research and Technology, Hellas −
Institute of Chemical Engineering Sciences (FORTH/ICE-HT), P.O. Box 1414, GR-26504 Patra, Greece
| | | | - Shuguang Zhang
- Center
for Bits & Atoms, Massachusetts Institute
of Technology, 77 Massachusetts
Avenue, Cambridge, Massachusetts 02139, United States
| | - Sotirios Koutsopoulos
- Center
for Biomedical Engineering, Massachusetts
Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Tel.: +1-617-752-2042. Fax: +1-617-258-5239.
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23
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Yu D, Huang G, Xu F, Wang M, Liu S, Huang F. Triton X-100 as an effective surfactant for the isolation and purification of photosystem I from Arthrospira platensis. PHOTOSYNTHESIS RESEARCH 2014; 120:311-321. [PMID: 24599394 DOI: 10.1007/s11120-014-9988-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Accepted: 02/17/2014] [Indexed: 06/03/2023]
Abstract
Surfactants play important roles in the preparation, structural, and functional research of membrane proteins, and solubilizing and isolating membrane protein, while keeping their structural integrity and activity intact is complicated. The commercial n-Dodecyl-β-D-maltoside (DDM) and Triton X-100 (TX) were used as solubilizers to extract and purify trimeric photosystem I (PSI) complex, an important photosynthetic membrane protein complex attracting broad interests. With an optimized procedure, TX can be used as an effective surfactant to isolate and purify PSI, as a replace of the much more expensive DDM. A mechanism was proposed to interpret the solubilization process at surfactant concentrations lower than the critical solubilization concentration. PSI-TX and PSI-DDM had identical polypeptide bands, pigment compositions, oxygen consumption, and photocurrent activities. This provides an alternative procedure and paves a way for economical and large-scale trimeric PSI preparation.
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Affiliation(s)
- Daoyong Yu
- State Key Laboratory of Heavy Oil Processing, Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, 266580, China,
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24
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Zhang R, Li J, Wu WJ. Relative Chemical Shifts for Obtaining Accurate Chemical Shifts of Hydrogen Atoms in CH Groups. CHINESE J CHEM PHYS 2014. [DOI: 10.1063/1674-0068/27/02/240-242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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25
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Hein C, Henrich E, Orbán E, Dötsch V, Bernhard F. Hydrophobic supplements in cell-free systems: Designing artificial environments for membrane proteins. Eng Life Sci 2014. [DOI: 10.1002/elsc.201300050] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Christopher Hein
- Centre for Biomolecular Magnetic Resonance; Institute for Biophysical Chemistry; Goethe-University of Frankfurt/Main; Frankfurt am Main Germany
| | - Erik Henrich
- Centre for Biomolecular Magnetic Resonance; Institute for Biophysical Chemistry; Goethe-University of Frankfurt/Main; Frankfurt am Main Germany
| | - Erika Orbán
- Centre for Biomolecular Magnetic Resonance; Institute for Biophysical Chemistry; Goethe-University of Frankfurt/Main; Frankfurt am Main Germany
| | - Volker Dötsch
- Centre for Biomolecular Magnetic Resonance; Institute for Biophysical Chemistry; Goethe-University of Frankfurt/Main; Frankfurt am Main Germany
| | - Frank Bernhard
- Centre for Biomolecular Magnetic Resonance; Institute for Biophysical Chemistry; Goethe-University of Frankfurt/Main; Frankfurt am Main Germany
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26
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Bhushan B, Luo D, Schricker SR, Sigmund W, Zauscher S. Hierarchical Self-Assembled Peptide Nano-ensembles. HANDBOOK OF NANOMATERIALS PROPERTIES 2014. [PMCID: PMC7123264 DOI: 10.1007/978-3-642-31107-9_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A variety of peptides can be self-assembled, i.e. self-organized spontaneously, into large and complex hierarchical structures, reproducibly by regulating a range of parameters that can be environment driven, process driven, or peptide driven. These supramolecular peptide aggregates yield different shapes and structures like nanofibers, nanotubes, nanobelts, nanowires, nanotapes, and micelles. These peptide nanostructures represent a category of materials that bridge biotechnology and nanotechnology and are found suitable not only for biomedical applications such as tissue engineering and drug delivery but also in nanoelectronics.
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Affiliation(s)
- Bharat Bhushan
- Nanoprobe Laboratory for Bio- & Nanotechnology and Biomimetics, Ohio State University, Columbus, Ohio USA
| | - Dan Luo
- Department of Biological and Environmental Engineering, Cornell University, Ithaca, New York USA
| | - Scott R. Schricker
- Division of Restorative, Prosthetic and Primary Care, The Ohio State University, College of Dentistry, Columbus, Ohio USA
| | - Wolfgang Sigmund
- Department of Materials Science and Engineering, University of Florida, Gainesville, Florida USA
| | - Stefan Zauscher
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, North Carolina USA
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27
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Zheng X, Dong S, Zheng J, Li D, Li F, Luo Z. Expression, stabilization and purification of membrane proteins via diverse protein synthesis systems and detergents involving cell-free associated with self-assembly peptide surfactants. Biotechnol Adv 2014; 32:564-74. [PMID: 24566241 DOI: 10.1016/j.biotechadv.2014.02.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2013] [Revised: 06/13/2013] [Accepted: 02/17/2014] [Indexed: 12/21/2022]
Abstract
G-protein coupled receptors (GPCRs) are involved in regulating most of physiological actions and metabolism in the bodies, which have become most frequently addressed therapeutic targets for various disorders and diseases. Purified GPCR-based drug discoveries have become routine that approaches to structural study, novel biophysical and biochemical function analyses. However, several bottlenecks that GPCR-directed drugs need to conquer the problems including overexpression, solubilization, and purification as well as stabilization. The breakthroughs are to obtain efficient protein yield and stabilize their functional conformation which are both urgently requiring of effective protein synthesis system methods and optimal surfactants. Cell-free protein synthesis system is superior to the high yields and post-translation modifications, and early signs of self-assembly peptide detergents also emerged to superiority in purification of membrane proteins. We herein focus several predominant protein synthesis systems and surfactants involving the novel peptide detergents, and uncover the advantages of cell-free protein synthesis system with self-assembling peptide detergents in purification of functional GPCRs. This review is useful to further study in membrane proteins as well as the new drug exploration.
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Affiliation(s)
- Xuan Zheng
- College of Basic Medical Sciences, Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing, China
| | - Shuangshuang Dong
- College of Basic Medical Sciences, Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing, China
| | - Jie Zheng
- College of laboratory Medicine, Chongqing Medical University, Chongqing, China
| | - Duanhua Li
- Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, China
| | - Feng Li
- China Tobacco Gene Research Center, Zhengzhou Tobacco Research Institute, Zhengzhou, China
| | - Zhongli Luo
- College of Basic Medical Sciences, Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing, China.
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28
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Midtgaard SR, Pedersen MC, Kirkensgaard JJK, Sørensen KK, Mortensen K, Jensen KJ, Arleth L. Self-assembling peptides form nanodiscs that stabilize membrane proteins. SOFT MATTER 2014; 10:738-752. [PMID: 24651399 DOI: 10.1039/c3sm51727f] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
New methods to handle membrane bound proteins, e.g. G-protein coupled receptors (GPCRs), are highly desirable. Recently, apoliprotein A1 (ApoA1) based lipoprotein particles have emerged as a new platform for studying membrane proteins, and it has been shown that they can self-assemble in combination with phospholipids to form discoidal shaped particles that can stabilize membrane proteins. In the present study, we have investigated an ApoA1 mimetic peptide with respect to its solution structure when in complex with phospholipids. This was achieved using a powerful combination of small-angle X-ray scattering (SAXS) and small-angle neutron scattering (SANS) supported by coarse-grained molecular dynamics simulations. The detailed structure of the discs was determined in unprecedented detail and it was found that they adopt a discoidal structure very similar to the ApoA1 based nanodiscs. We furthermore show that, like the ApoA1 and derived nanodiscs, these peptide discs can accommodate and stabilize a membrane protein. Finally, we exploit their dynamic properties and show that the 18A discs may be used for transferring membrane proteins and associated phospholipids directly and gently into phospholipid nanodiscs.
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29
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Nguyen K, Bruce BD. Growing green electricity: progress and strategies for use of photosystem I for sustainable photovoltaic energy conversion. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2014; 1837:1553-66. [PMID: 24388916 DOI: 10.1016/j.bbabio.2013.12.013] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Revised: 12/17/2013] [Accepted: 12/25/2013] [Indexed: 10/25/2022]
Abstract
Oxygenic photosynthesis is driven via sequential action of Photosystem II (PSII) and (PSI)reaction centers via the Z-scheme. Both of these pigment-membrane protein complexes are found in cyanobacteria, algae, and plants. Unlike PSII, PSI is remarkably stable and does not undergo limiting photo-damage. This stability, as well as other fundamental structural differences, makes PSI the most attractive reaction centers for applied photosynthetic applications. These applied applications exploit the efficient light harvesting and high quantum yield of PSI where the isolated PSI particles are redeployed providing electrons directly as a photocurrent or, via a coupled catalyst to yield H₂. Recent advances in molecular genetics, synthetic biology, and nanotechnology have merged to allow PSI to be integrated into a myriad of biohybrid devices. In photocurrent producing devices, PSI has been immobilized onto various electrode substrates with a continuously evolving toolkit of strategies and novel reagents. However, these innovative yet highly variable designs make it difficult to identify the rate-limiting steps and/or components that function as bottlenecks in PSI-biohybrid devices. In this study we aim to highlight these recent advances with a focus on identifying the similarities and differences in electrode surfaces, immobilization/orientation strategies, and artificial redox mediators. Collectively this work has been able to maintain an annual increase in photocurrent density (Acm⁻²) of ~10-fold over the past decade. The potential drawbacks and attractive features of some of these schemes are also discussed with their feasibility on a large-scale. As an environmentally benign and renewable resource, PSI may provide a new sustainable source of bioenergy. This article is part of a special issue entitled: photosynthesis research for sustainability: keys to produce clean energy.
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Affiliation(s)
- Khoa Nguyen
- Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, USA
| | - Barry D Bruce
- Department of Biochemistry and Cellular and Molecular Biology, University of Tennessee, Knoxville, TN 37996, USA; Department of Microbiology, University of Tennessee, Knoxville, TN 37996, USA; Bredesen Center for Interdisciplinary Research and Education, University of Tennessee, Knoxville, TN 37996, USA.
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Wang X, Huang G, Yu D, Ge B, Wang J, Xu F, Huang F, Xu H, Lu JR. Solubilization and stabilization of isolated photosystem I complex with lipopeptide detergents. PLoS One 2013; 8:e76256. [PMID: 24098786 PMCID: PMC3787008 DOI: 10.1371/journal.pone.0076256] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 08/22/2013] [Indexed: 11/20/2022] Open
Abstract
It is difficult to maintain a target membrane protein in a soluble and functional form in aqueous solution without biological membranes. Use of surfactants can improve solubility, but it remains challenging to identify adequate surfactants that can improve solubility without damaging their native structures and biological functions. Here we report the use of a new class of lipopeptides to solubilize photosystem I (PS-I), a well known membrane protein complex. Changes in the molecular structure of these surfactants affected their amphiphilicity and the goal of this work was to exploit a delicate balance between detergency and biomimetic performance in PS-I solubilization via their binding capacity. Meanwhile, the effects of these surfactants on the thermal and structural stability and functionality of PS-I in aqueous solution were investigated by circular dichroism, fluorescence spectroscopy, SDS-PAGE analysis and O2 uptake measurements, respectively. Our studies showed that the solubility of PS-I depended on both the polarity and charge in the hydrophilic head of the lipopeptides and the length of its hydrophobic tail. The best performing lipopeptides in favour of PS-I solubility turned out to be C14DK and C16DK, which were comparable to the optimal amphiphilicity of the conventional chemical surfactants tested. Lipopeptides showed obvious advantages in enhancing PS-I thermostability over sugar surfactant DDM and some full peptide amphiphiles reported previously. Fluorescence spectroscopy along with SDS-PAGE analysis demonstrated that lipopeptides did not undermine the polypeptide composition and conformation of PS-I after solubilization; instead they showed better performance in improving the structural stability and integrity of this multi-subunit membrane protein than conventional detergents. Furthermore, O2 uptake measurements indicated that PS-I solubilized with lipopeptides maintained its functionality. The underlying mechanism for the favorable actions of lipopeptide in PS-I solubilization and stabilization is discussed.
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Affiliation(s)
- Xiaoqiang Wang
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, Shandong, P. R. China
| | - Guihong Huang
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, Shandong, P. R. China
| | - Daoyong Yu
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, Shandong, P. R. China
| | - Baosheng Ge
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, Shandong, P. R. China
| | - Jiqian Wang
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, Shandong, P. R. China
| | - Fengxi Xu
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, Shandong, P. R. China
| | - Fang Huang
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, Shandong, P. R. China
- * E-mail: (FH); (HX)
| | - Hai Xu
- State Key Laboratory of Heavy Oil Processing and Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, Shandong, P. R. China
- * E-mail: (FH); (HX)
| | - Jian R. Lu
- Biological Physics Laboratory, School of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
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Koeda S, Umezaki K, Noji T, Ikeda A, Kawakami K, Kondo M, Yamamoto Y, Shen JR, Taga K, Dewa T, Ito S, Nango M, Tanaka T, Mizuno T. Application of peptide gemini surfactants as novel solubilization surfactants for photosystems I and II of cyanobacteria. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:11667-11680. [PMID: 23957575 DOI: 10.1021/la402167v] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We designed novel peptide gemini surfactants (PG-surfactants), DKDKC12K and DKDKC12D, which can solubilize Photosystem I (PSI) of Thermosynecoccus elongatus and Photosystem II (PSII) of Thermosynecoccus vulcanus in an aqueous buffer solution. To assess the detailed effects of PG-surfactants on the original supramolecular membrane protein complexes and functions of PSI and PSII, we applied the surfactant exchange method to the isolated PSI and PSII. Spectroscopic properties, light-induced electron transfer activity, and dynamic light scattering measurements showed that PSI and PSII could be solubilized not only with retention of the original supramolecular protein complexes and functions but also without forming aggregates. Furthermore, measurement of the lifetime of light-induced charge-separation state in PSI revealed that both surfactants, especially DKDKC12D, displayed slight improvement against thermal denaturation below 60 °C compared with that using β-DDM. This degree of improvement in thermal resistance still seems low, implying that the peptide moieties did not interact directly with membrane protein surfaces. By conjugating an electron mediator such as methyl viologen (MV(2+)) to DKDKC12K (denoted MV-DKDKC12K), we obtained derivatives that can trap the generated reductive electrons from the light-irradiated PSI. After immobilization onto an indium tin oxide electrode, a cathodic photocurrent from the electrode to the PSI/MV-DKDKC12K conjugate was observed in response to the interval of light irradiation. These findings indicate that the PG-surfactants DKDKC12K and DKDKC12D provide not only a new class of solubilization surfactants but also insights into designing other derivatives that confer new functions on PSI and PSII.
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Affiliation(s)
- Shuhei Koeda
- Graduate School of Engineering, Nagoya Institute of Technology , Gokiso-cho, Showa-ku, Nagoya, Aichi 466-8555, Japan
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Guo T, Yang J, Zeng L, Wang H, Tong Q, Li X. Does there exist an intrinsic relationship between the flexibility and self-assembly of pepfactants? MOLECULAR SIMULATION 2013. [DOI: 10.1080/08927022.2013.817673] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Luo Z, Yue Y, Zhang Y, Yuan X, Gong J, Wang L, He B, Liu Z, Sun Y, Liu J, Hu M, Zheng J. Designer D-form self-assembling peptide nanofiber scaffolds for 3-dimensional cell cultures. Biomaterials 2013; 34:4902-13. [DOI: 10.1016/j.biomaterials.2013.03.081] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Accepted: 03/27/2013] [Indexed: 12/21/2022]
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Hosseinkhani H, Hong PD, Yu DS. Self-assembled proteins and peptides for regenerative medicine. Chem Rev 2013; 113:4837-61. [PMID: 23547530 DOI: 10.1021/cr300131h] [Citation(s) in RCA: 196] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Hossein Hosseinkhani
- Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology (Taiwan Tech), Taipei 10607, Taiwan.
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35
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Lu X, Liu S, Zhang D, Zhou X, Wang M, Liu Y, Wu J, Du G, Chen J. Enhanced thermal stability and specific activity of Pseudomonas aeruginosa lipoxygenase by fusing with self-assembling amphipathic peptides. Appl Microbiol Biotechnol 2013; 97:9419-27. [DOI: 10.1007/s00253-013-4751-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Revised: 01/20/2013] [Accepted: 01/31/2013] [Indexed: 11/24/2022]
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Abstract
One important question in prebiotic chemistry is the search for simple structures that might have enclosed biological molecules in a cell-like space. Phospholipids, the components of biological membranes, are highly complex. Instead, we looked for molecules that might have been available on prebiotic Earth. Simple peptides with hydrophobic tails and hydrophilic heads that are made up of merely a combination of these robust, abiotically synthesized amino acids and could self-assemble into nanotubes or nanovesicles fulfilled our initial requirements. These molecules could provide a primitive enclosure for the earliest enzymes based on either RNA or peptides and other molecular structures with a variety of functions. We discovered and designed a class of these simple lipid-like peptides, which we describe in this Account. These peptides consist of natural amino acids (glycine, alanine, valine, isoleucine, leucine, aspartic acid, glutamic acid, lysine, and arginine) and exhibit lipid-like dynamic behaviors. These structures further undergo spontaneous assembly to form ordered arrangements including micelles, nanovesicles, and nanotubes with visible openings. Because of their simplicity and stability in water, such assemblies could provide examples of prebiotic molecular evolution that may predate the RNA world. These short and simple peptides have the potential to self-organize to form simple enclosures that stabilize other fragile molecules, to bring low concentration molecules into a local environment, and to enhance higher local concentration. As a result, these structures plausibly could not only accelerate the dehydration process for new chemical bond formation but also facilitate further self-organization and prebiotic evolution in a dynamic manner. We also expect that this class of lipid-like peptides will likely find a wide range of uses in the real world. Because of their favorable interactions with lipids, these lipid-like peptides have been used to solubilize and stabilize membrane proteins, both for scientific studies and for the fabrication of nanobiotechological devices. They can also increase the solubility of other water-insoluble molecules and increase long-term stability of some water-soluble proteins. Likewise, because of their lipophilicity, these structures can deliver molecular cargo, such as small molecules, siRNA, and DNA, in vivo for potential therapeutic applications.
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Affiliation(s)
- Shuguang Zhang
- Laboratory of Molecular Design, Center for Bits and Atoms, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, United States
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Tian F, Wu J, Huang N, Guo T, Mao C. The critical aggregation concentration of peptide surfactants is predictable from dynamic hydrophobic property. SAR AND QSAR IN ENVIRONMENTAL RESEARCH 2012; 24:89-101. [PMID: 23171122 DOI: 10.1080/1062936x.2012.742134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Peptide surfactants are a kind of newly emerged functional materials, which have a variety of applications such as building nanoarchitecture, stabilizing membrane proteins and controlling drug release. In the present study, we report the modelling and prediction of critical aggregation concentration (CAC), an important parameter that characterizes the self-assembling behaviour of peptide surfactants through the use of statistical modelling and quantitative structure-property relationship (QSPR) approaches. In order to accurately describe the structural and physicochemical properties of the highly flexible peptide molecules, a new method called molecular dynamics-based hydrophobic cross-field (MD-HCF) is proposed to capture both the hydrophobic profile and dynamic feature of 32 surface-activity, structure-known peptides. A number of statistical models are then developed using partial least squares (PLS) regression with or without improvement by genetic algorithm (GA). We demonstrate that MD-HCF performs much better than the widely used CODESSA method in both its predictability and interpretability. We also highlight the importance of dynamic hydrophobic property in accurate prediction and reasonable explanation of peptide self-assembling behaviour in solution, albeit which is exhaustive to compute compared with those derived directly from peptide static structure. To the best of our knowledge, this study is the first to computationally model and predict the self-assembling behaviour of peptide surfactants.
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Affiliation(s)
- F Tian
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
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QIU FENG, CHEN YONGZHU, TANG CHENGKANG, LU YANRONG, CHENG JINGQIU, ZHAO XIAOJUN. FORMATION OF REVERSED MICELLE NANORING BY A DESIGNED SURFACTANT-LIKE PEPTIDE. NANO 2012. [DOI: 10.1142/s1793292012500245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Designing self-assembling peptides as nanomaterials has been an attractive strategy in recent years, however, these peptides were usually studied in aqueous solutions for their self-assembling behaviors and applications. In this study, we have designed a surfactant-like peptide AGD with a wedge-like shape and studied its self-assembling behaviors in aqueous solution or nonpolar system. By analyzing the intermolecular hydrogen bond using FT-IR and characterizing the nanostructures with DLS, AFM and TEM, it was confirmed that AGD could not undergo self-assembly in aqueous solution while could self-assemble into well-ordered nanorings in nonpolar system. A molecular model has been proposed to explain how the nanorings were formed in the manner of reversed micelle. These results suggested a novel strategy to fabricate self-assembling peptide nanomaterials in nonpolar system, which could have potential applications in many fields.
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Affiliation(s)
- FENG QIU
- Laboratory of Transplant Immunology, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Nanomedicine Laboratory and Institute for Nanobiomedical, Technology and Membrane Biology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Center for Biomedical Engineering, NE47-379, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA
| | - YONGZHU CHEN
- Laboratory of Transplant Immunology, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Nanomedicine Laboratory and Institute for Nanobiomedical, Technology and Membrane Biology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Center for Biomedical Engineering, NE47-379, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA
| | - CHENGKANG TANG
- Laboratory of Transplant Immunology, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Nanomedicine Laboratory and Institute for Nanobiomedical, Technology and Membrane Biology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Center for Biomedical Engineering, NE47-379, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA
| | - YANRONG LU
- Laboratory of Transplant Immunology, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Nanomedicine Laboratory and Institute for Nanobiomedical, Technology and Membrane Biology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Center for Biomedical Engineering, NE47-379, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA
| | - JINGQIU CHENG
- Laboratory of Transplant Immunology, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Nanomedicine Laboratory and Institute for Nanobiomedical, Technology and Membrane Biology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Center for Biomedical Engineering, NE47-379, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA
| | - XIAOJUN ZHAO
- Laboratory of Transplant Immunology, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Nanomedicine Laboratory and Institute for Nanobiomedical, Technology and Membrane Biology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P. R. China
- Center for Biomedical Engineering, NE47-379, Massachusetts Institute of Technology, Cambridge, MA 02139-4307, USA
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Wang H, Yang Z. Short-peptide-based molecular hydrogels: novel gelation strategies and applications for tissue engineering and drug delivery. NANOSCALE 2012; 4:5259-67. [PMID: 22814874 DOI: 10.1039/c2nr31149f] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Molecular hydrogels hold big potential for tissue engineering and controlled drug delivery. Our lab focuses on short-peptide-based molecular hydrogels formed by biocompatible methods and their applications in tissue engineering (especially, 3D cell culture) and controlled drug delivery. This feature article firstly describes our recent progresses of the development of novel methods to form hydrogels, including the strategy of disulfide bond reduction and assistance with specific protein-peptide interactions. We then introduce the applications of our hydrogels in fields of controlled stem cell differentiation, cell culture, surface modifications of polyester materials by molecular self-assembly, and anti-degradation of recombinant complex proteins. A novel molecular hydrogel system of hydrophobic compounds that are only formed by hydrolysis processes was also included in this article. The hydrogels of hydrophobic compounds, especially those of hydrophobic therapeutic agents, may be developed into a carrier-free delivery system for long term delivery of therapeutic agents. With the efforts in this field, we believe that molecular hydrogels formed by short peptides and hydrophobic therapeutic agents can be practically applied for 3D cell culture and long term drug delivery in near future, respectively.
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Affiliation(s)
- Huaimin Wang
- State Key Laboratory of Medicinal Chemical Biology and College of Life Sciences, Nankai University, Tianjin 300071, P. R. China
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40
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Liu J, Zhang X, Wang M, Liu J, Cao M, Lu J, Cui Z. Characterization of photosystem I from spinach: effect of solution pH. PHOTOSYNTHESIS RESEARCH 2012; 112:63-70. [PMID: 22477469 DOI: 10.1007/s11120-012-9737-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Accepted: 03/19/2012] [Indexed: 05/31/2023]
Abstract
Our previous work has demonstrated the isolation of photosystem I (PSI) from spinach using ultrafiltration with a final purity of 84%. In order to get a higher purity of PSI and more importantly to develop a practical bioseparation process, key physiochemical properties of PSI and their dependence on operational parameters must be assessed. In this study, the effect of solution pH, one of the most important operating parameters for membrane process, on the property of PSI was examined. Following the isolation of crude PSI from spinach using n-dodecyl-beta-D: -maltoside as detergent, the isoelectric point, aggregation size, zeta potential, low-temperature fluorescence, atomic force microscopy imaging, secondary structure, and thermal stability were determined. Solution pH was found to have a significant effect on the activity, aggregation size and thermal stability of PSI. The results also suggested that the activity of PSI was related to its aggregation size.
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Affiliation(s)
- Jianguo Liu
- Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266555, People's Republic of China.
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41
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Short self-assembling peptides as building blocks for modern nanodevices. Trends Biotechnol 2012; 30:155-65. [DOI: 10.1016/j.tibtech.2011.11.001] [Citation(s) in RCA: 190] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2011] [Revised: 11/01/2011] [Accepted: 11/01/2011] [Indexed: 01/01/2023]
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Mershin A, Matsumoto K, Kaiser L, Yu D, Vaughn M, Nazeeruddin MK, Bruce BD, Graetzel M, Zhang S. Self-assembled photosystem-I biophotovoltaics on nanostructured TiO(2 )and ZnO. Sci Rep 2012; 2:234. [PMID: 22355747 PMCID: PMC3270499 DOI: 10.1038/srep00234] [Citation(s) in RCA: 197] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2011] [Accepted: 01/05/2012] [Indexed: 11/11/2022] Open
Abstract
The abundant pigment-protein membrane complex photosystem-I (PS-I) is at the heart of the Earth's energy cycle. It is the central molecule in the "Z-scheme" of photosynthesis, converting sunlight into the chemical energy of life. Commandeering this intricately organized photosynthetic nanocircuitry and re-wiring it to produce electricity carries the promise of inexpensive and environmentally friendly solar power. We here report that dry PS-I stabilized by surfactant peptides functioned as both the light-harvester and charge separator in solar cells self-assembled on nanostructured semiconductors. Contrary to previous attempts at biophotovoltaics requiring elaborate surface chemistries, thin film deposition, and illumination concentrated into narrow wavelength ranges the devices described here are straightforward and inexpensive to fabricate and perform well under standard sunlight yielding open circuit photovoltage of 0.5 V, fill factor of 71%, electrical power density of 81 µW/cm(2) and photocurrent density of 362 µA/cm(2), over four orders of magnitude higher than any photosystem-based biophotovoltaic to date.
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Affiliation(s)
- Andreas Mershin
- Center for Bits and Atoms, NE47-383, Massachusetts Institute of Technology, 77 Massachusetts Ave. Cambridge, MA 02139, USA
| | - Kazuya Matsumoto
- Laboratory for Molecular Self-Assembly, NE47-379, Massachusetts Institute of Technology, 500 Technology Square, Cambridge, MA 02139, USA
| | - Liselotte Kaiser
- Laboratory for Molecular Self-Assembly, NE47-379, Massachusetts Institute of Technology, 500 Technology Square, Cambridge, MA 02139, USA
| | - Daoyong Yu
- Laboratory for Molecular Self-Assembly, NE47-379, Massachusetts Institute of Technology, 500 Technology Square, Cambridge, MA 02139, USA
| | - Michael Vaughn
- Biochemistry, Cellular and Molecular Biology & Chemical and Biomolecular Engineering, 226 Hesler Biology Bldg., University of Tennessee at Knoxville, TN 37996, USA
| | - Md. K. Nazeeruddin
- Laboratory for Photonics and Interfaces (Institute of Chemical Science and Engineering), Ecole Polytechnique Federale de Lausanne, Lausanne, CH-1015, Switzerland
| | - Barry D. Bruce
- Biochemistry, Cellular and Molecular Biology & Chemical and Biomolecular Engineering, 226 Hesler Biology Bldg., University of Tennessee at Knoxville, TN 37996, USA
| | - Michael Graetzel
- Laboratory for Photonics and Interfaces (Institute of Chemical Science and Engineering), Ecole Polytechnique Federale de Lausanne, Lausanne, CH-1015, Switzerland
| | - Shuguang Zhang
- Laboratory for Molecular Self-Assembly, NE47-379, Massachusetts Institute of Technology, 500 Technology Square, Cambridge, MA 02139, USA
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Koutsopoulos S, Kaiser L, Eriksson HM, Zhang S. Designer peptidesurfactants stabilize diverse functional membrane proteins. Chem Soc Rev 2012; 41:1721-8. [DOI: 10.1039/c1cs15180k] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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44
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Luo Z, Zhang S. Designer nanomaterials using chiral self-assembling peptide systems and their emerging benefit for society. Chem Soc Rev 2012; 41:4736-54. [DOI: 10.1039/c2cs15360b] [Citation(s) in RCA: 183] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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45
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Corin K, Baaske P, Ravel DB, Song J, Brown E, Wang X, Wienken CJ, Jerabek-Willemsen M, Duhr S, Luo Y, Braun D, Zhang S. Designer lipid-like peptides: a class of detergents for studying functional olfactory receptors using commercial cell-free systems. PLoS One 2011; 6:e25067. [PMID: 22132066 PMCID: PMC3223156 DOI: 10.1371/journal.pone.0025067] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Accepted: 08/26/2011] [Indexed: 01/18/2023] Open
Abstract
A crucial bottleneck in membrane protein studies, particularly G-protein coupled receptors, is the notorious difficulty of finding an optimal detergent that can solubilize them and maintain their stability and function. Here we report rapid production of 12 unique mammalian olfactory receptors using short designer lipid-like peptides as detergents. The peptides were able to solubilize and stabilize each receptor. Circular dichroism showed that the purified olfactory receptors had alpha-helical secondary structures. Microscale thermophoresis suggested that the receptors were functional and bound their odorants. Blot intensity measurements indicated that milligram quantities of each olfactory receptor could be produced with at least one peptide detergent. The peptide detergents' capability was comparable to that of the detergent Brij-35. The ability of 10 peptide detergents to functionally solubilize 12 olfactory receptors demonstrates their usefulness as a new class of detergents for olfactory receptors, and possibly other G-protein coupled receptors and membrane proteins.
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Affiliation(s)
- Karolina Corin
- Center for Biomedical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | | | - Deepali B. Ravel
- Center for Biomedical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Junyao Song
- Center for Biomedical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Emily Brown
- Center for Biomedical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
| | - Xiaoqiang Wang
- Center for Biomedical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
- Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, Shandong, China
| | - Christoph J. Wienken
- Systems Biophysics, Functional Nanosystems, Ludwig-Maximilians University Munich, München, Germany
| | - Moran Jerabek-Willemsen
- Systems Biophysics, Functional Nanosystems, Ludwig-Maximilians University Munich, München, Germany
| | - Stefan Duhr
- NanoTemper Technologies GmbH, München, Germany
| | - Yuan Luo
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Maryland, Baltimore, Maryland, United States of America
| | - Dieter Braun
- Systems Biophysics, Functional Nanosystems, Ludwig-Maximilians University Munich, München, Germany
| | - Shuguang Zhang
- Center for Biomedical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, United States of America
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Zhuang F, Oglęcka K, Hauser CAE. Self-Assembling Peptide Surfactants A6K and A6D Adopt a-Helical Structures Useful for Membrane Protein Stabilization. MEMBRANES 2011; 1:314-26. [PMID: 24957871 PMCID: PMC4021873 DOI: 10.3390/membranes1040314] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 09/30/2011] [Accepted: 10/10/2011] [Indexed: 11/30/2022]
Abstract
Elucidation of membrane protein structures have been greatly hampered by difficulties in producing adequately large quantities of the functional protein and stabilizing them. A6D and A6K are promising solutions to the problem and have recently been used for the rapid production of membrane-bound G protein-coupled receptors (GPCRs). We propose that despite their short lengths, these peptides can adopt α-helical structures through interactions with micelles formed by the peptides themselves. These α-helices are then able to stabilize α-helical motifs which many membrane proteins contain. We also show that A6D and A6K can form β-sheets and appear as weak hydrogels at sufficiently high concentrations. Furthermore, A6D and A6K together in sodium dodecyl sulfate (SDS) can form expected β-sheet structures via a surprising α-helical intermediate.
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Affiliation(s)
- Furen Zhuang
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos #04-01, Singapore 138669, Singapore.
| | - Kamila Oglęcka
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos #04-01, Singapore 138669, Singapore.
| | - Charlotte A E Hauser
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos #04-01, Singapore 138669, Singapore.
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Wang X, Corin K, Baaske P, Wienken CJ, Jerabek-Willemsen M, Duhr S, Braun D, Zhang S. Peptide surfactants for cell-free production of functional G protein-coupled receptors. Proc Natl Acad Sci U S A 2011; 108:9049-54. [PMID: 21562213 PMCID: PMC3107261 DOI: 10.1073/pnas.1018185108] [Citation(s) in RCA: 87] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Two major bottlenecks in elucidating the structure and function of membrane proteins are the difficulty of producing large quantities of functional receptors, and stabilizing them for a sufficient period of time. Selecting the right surfactant is thus crucial. Here we report using peptide surfactants in commercial Escherichia coli cell-free systems to rapidly produce milligram quantities of soluble G protein-coupled receptors (GPCRs). These include the human formyl peptide receptor, human trace amine-associated receptor, and two olfactory receptors. The GPCRs expressed in the presence of the peptide surfactants were soluble and had α-helical secondary structures, suggesting that they were properly folded. Microscale thermophoresis measurements showed that one olfactory receptor expressed using peptide surfactants bound its known ligand heptanal (molecular weight 114.18). These short and simple peptide surfactants may be able to facilitate the rapid production of GPCRs, or even other membrane proteins, for structure and function studies.
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Affiliation(s)
- Xiaoqiang Wang
- Center for Biomedical Engineering NE47-379, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139-4307
- Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao, Shandong 266555, People’s Republic of China
| | - Karolina Corin
- Center for Biomedical Engineering NE47-379, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139-4307
| | - Philipp Baaske
- NanoTemper Technologies GmbH, Amalienstrasse 54, 80799 Munich, Germany; and
| | - Christoph J. Wienken
- Systems Biophysics, Functional Nanosystems, Department of Physics, Ludwig-Maximilians University Munich, Amalienstrasse 54, 80799 Munich, Germany
| | - Moran Jerabek-Willemsen
- Systems Biophysics, Functional Nanosystems, Department of Physics, Ludwig-Maximilians University Munich, Amalienstrasse 54, 80799 Munich, Germany
| | - Stefan Duhr
- NanoTemper Technologies GmbH, Amalienstrasse 54, 80799 Munich, Germany; and
| | - Dieter Braun
- Systems Biophysics, Functional Nanosystems, Department of Physics, Ludwig-Maximilians University Munich, Amalienstrasse 54, 80799 Munich, Germany
| | - Shuguang Zhang
- Center for Biomedical Engineering NE47-379, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, MA 02139-4307
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Luo Z, Wang S, Zhang S. Fabrication of self-assembling d-form peptide nanofiber scaffold d-EAK16 for rapid hemostasis. Biomaterials 2011; 32:2013-20. [DOI: 10.1016/j.biomaterials.2010.11.049] [Citation(s) in RCA: 121] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2010] [Accepted: 11/19/2010] [Indexed: 10/18/2022]
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Liu J, Yin M, Wang M, Zhang X, Ge B, Liu S, Lu J, Cui Z. A novel membrane based process to isolate photosystem-I membrane complex from spinach. PHOTOSYNTHESIS RESEARCH 2011; 107:187-193. [PMID: 21274629 DOI: 10.1007/s11120-011-9625-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2010] [Accepted: 01/10/2011] [Indexed: 05/30/2023]
Abstract
The isolation of photosystem-I (PS-I) from spinach has been conducted using ultrafiltration with 300 kDa molecular weight cut-off polyethersulfone membranes. The effects of ultrafiltration operating conditions on PS-I activity were optimized using parameter scanning ultrafiltration. These conditions included solution pH, ionic strength, stirring speed, and permeate flux. The effects of detergent (Triton X-100 and n-dodecyl-beta-D-maltoside) concentration on time dependent activity of PS-I were also studied using an O(2) electrode. Under optimized conditions, the PS-I purity obtained in the retentate was about 84% and the activity recovery was greater than 94% after ultrafiltration. To our knowledge, this is the first report of the isolation of a membrane protein using ultrafiltration alone.
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Affiliation(s)
- Jianguo Liu
- Center for Bioengineering and Biotechnology, China University of Petroleum (East China), Qingdao 266555, People's Republic of China.
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Mukherjee D, May M, Vaughn M, Bruce BD, Khomami B. Controlling the morphology of Photosystem I assembly on thiol-activated Au substrates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2010; 26:16048-54. [PMID: 20845944 DOI: 10.1021/la102832x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Morphological variations of Photosystem I (PS I) assembly on hydroxyl-terminated alkanethiolate self-assembled monolayer (SAM)/Au substrates with various deposition techniques is presented. Our studies indicate that deposition conditions such as PS I concentration and driving force play a central role in determining organization of immobilized PS I on thiol-activated Au surfaces. Specifically, atomic force microscopy (AFM) and ellipsometry analyses indicate that gravity-driven deposition from concentrated PS I solutions results in a large number of columnar PS I aggregates, which assemble perpendicular to the Au surface. PS I deposition yields much more uniform layers when deposited at lower concentrations, suggesting preassembly of the aggregate formation in the solution phase. Moreover, in electric field assisted deposition at high field strengths, columnar self-assembly is largely prevented, thereby allowing a uniform, monolayer-like deposition even at very high PS I concentrations. In situ dynamic light scattering (DLS) studies of solution-phase aggregation dynamics of PS I suspensions in both the presence and absence of an applied electric field support these observations and clearly demonstrate that the externally imposed electric field effectively fragments large PS I aggregates in the solution phase, thereby permitting a uniform deposition of PS I trimers on SAM/Au substrates.
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Affiliation(s)
- Dibyendu Mukherjee
- Sustainable Energy Education and Research Center (SEERC), University of Tennessee, Knoxville, Tennessee 37996, USA
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