1
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Sanchez-Fernandez A, Insua I, Montenegro J. Supramolecular fibrillation in coacervates and other confined systems towards biomimetic function. Commun Chem 2024; 7:223. [PMID: 39349583 PMCID: PMC11442845 DOI: 10.1038/s42004-024-01308-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Accepted: 09/13/2024] [Indexed: 10/04/2024] Open
Abstract
As in natural cytoskeletons, the cooperative assembly of fibrillar networks can be hosted inside compartments to engineer biomimetic functions, such as mechanical actuation, transport, and reaction templating. Coacervates impose an optimal liquid-liquid phase separation within the aqueous continuum, functioning as membrane-less compartments that can organise such self-assembling processes as well as the exchange of information with their environment. Furthermore, biological fibrillation can often be controlled or assisted by intracellular compartments. Thus, the reconstitution of analogues of natural filaments in simplified artificial compartments, such as coacervates, offer a suitable model to unravel, mimic, and potentially exploit cellular functions. This perspective summarises the latest developments towards assembling fibrillar networks under confinement inside coacervates and related compartments, including a selection of examples ranging from biological to fully synthetic monomers. Comparative analysis between coacervates, lipid vesicles, and droplet emulsions showcases the interplay between supramolecular fibres and the boundaries of the corresponding compartment. Combining inspiration from natural systems and the custom properties of tailored synthetic fibrillators, rational monomer and compartment design will contribute towards engineering increasingly complex and more realistic artificial protocells.
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Affiliation(s)
- Adrian Sanchez-Fernandez
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
- Departamento de Enxeñaría Química, Universidade de Santaigo de Compostela, Santiago de Compostela, Spain
| | - Ignacio Insua
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
- Departamento de Farmacoloxía, Farmacia e Tecnoloxía Farmacéutica, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
| | - Javier Montenegro
- Centro Singular de Investigación en Química Biolóxica e Materiais Moleculares (CIQUS), Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
- Departamento de Química Orgánica, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
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2
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Koroleva ON, Kuzmina NV, Dubrovin EV, Drutsa VL. Atomic force microscopy of spherical intermediates on the pathway to fibril formation of influenza A virus nuclear export protein. Microsc Res Tech 2024; 87:1131-1145. [PMID: 38270267 DOI: 10.1002/jemt.24499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 01/02/2024] [Accepted: 01/07/2024] [Indexed: 01/26/2024]
Abstract
The nuclear export protein of the influenza A virus (NEP) is involved in many important processes of the virus life cycle. This makes it an attractive target for the treatment of a disease caused by a virus. Previously it has been shown, that recombinant variants of NEP are highly prone to aggregation in solution under various conditions with the formation of amyloid-like aggregates. In the present work, the amyloid nature of NEP aggregates was evidenced by Congo red binding assays. Atomic force microscopy has shown that NEP can form two types of spherical nanoparticles, which provide an alternative pathway for the formation of amyloid-like fibrils. Type I of these "fibrillogenic" spheres, formed under physiological conditions, represents the micelle-like particles with height 10-60 nm, which can generate worm-like flexible fibrils with the diameter 2.5-4.0 nm, length 20-500 nm and the Young's modulus ~73 MPa. Type II spherical aggregates with size of about 400-1000 nm, formed at elevated temperatures, includes fractions of drop-like and vesicle-like particles, generating more rigid amyloid-like fibrils with height of ~8 nm, and length of up to 2 μm. The hypothetical mechanism of fibril formation via nanospherical structures was suggested. RESEARCH HIGHLIGHTS: AFM has revealed two types of the influenza A virus nuclear export protein spherical aggregates. They provide an alternative pathway for the formation of amyloid-like fibrils. The mechanism of fibril formation via spherical structures is suggested.
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Affiliation(s)
- Olga N Koroleva
- Faculty of Chemistry, Lomonosov Moscow State University, Moscow, Russian Federation
| | - Natalia V Kuzmina
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Moscow, Russian Federation
| | - Evgeniy V Dubrovin
- Faculty of Physics, Lomonosov Moscow State University, Moscow, Russian Federation
- National University of Science and Technology, MISIS, Moscow, Russian Federation
| | - Valeriy L Drutsa
- A.N.Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, Russian Federation
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3
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Gray M, Rodriguez-Otero MR, Champion JA. Self-Assembled Recombinant Elastin and Globular Protein Vesicles with Tunable Properties for Diverse Applications. Acc Chem Res 2024; 57:1227-1237. [PMID: 38624000 PMCID: PMC11080046 DOI: 10.1021/acs.accounts.3c00694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 03/05/2024] [Accepted: 03/11/2024] [Indexed: 04/17/2024]
Abstract
Vesicles are self-assembled structures comprised of a membrane-like exterior surrounding a hollow lumen with applications in drug delivery, artificial cells, and micro-bioreactors. Lipid or polymer vesicles are the most common and are made of lipids or polymers, respectively. They are highly useful structures for many applications but it can be challenging to decorate them with proteins or encapsulate proteins in them, owing to the use of organic solvent in their formation and the large size of proteins relative to lipid or polymer molecules. By utilization of recombinant fusion proteins to make vesicles, specific protein domains can be directly incorporated while also imparting tunability and stability. Protein vesicle assembly relies on the design and use of self-assembling amphiphilic proteins. A specific protein vesicle platform made in purely aqueous conditions of a globular, functional protein fused to a glutamate-rich leucine zipper (ZE) and a thermoresponsive elastin-like polypeptide (ELP) fused to an arginine-rich leucine zipper (ZR) is discussed here. The hydrophobic conformational change of the ELP above its transition temperature drives assembly, and strong ZE/ZR binding enables incorporation of the desired functional protein. Mixing the soluble proteins on ice induces zipper binding, and then warming above the ELP transition temperature (Tt) triggers the transition to and growth of protein-rich coacervates and, finally, reorganization of proteins into vesicles. Vesicle size is tunable based on salt concentration, rate of heating, protein concentration, size of the globular protein, molar ratio of the proteins, and the ELP sequence. Increasing the salt concentration decreases vesicle size by decreasing the Tt, resulting in a shorter coacervation transition stage. Likewise, directly changing the heating rate also changes this time and increasing protein concentration increases coalescence. Increasing globular protein size decreases the size of the vesicle due to steric hindrance. By changing the ELP sequence, which consists of (VPGXG)n, through the guest residue (X) or number of repeats (n), Tt is changed, affecting size. Additionally, the chemical nature of X variation has endowed vesicles with stimuli responsiveness and stability at physiological conditions.Protein vesicles have been used for biocatalysis, biomacromolecular drug delivery, and vaccine applications. Photo-cross-linkable vesicles were used to deliver small molecule cargo to cancer cells in vitro and antigen to immune cells in vivo. pH-responsive vesicles effectively delivered functional protein cargo, including cytochrome C, to the cytosol of cancer cells in vitro, using hydrophobic ion pairing to improve cargo distribution in the vesicles and release. The globular protein used to make the vesicles can be varied to achieve different functions. For example, enzyme vesicles exhibit biocatalysis, and antigen vesicles induce antibody and cellular immune responses after vaccination in mice. Collectively, the development and engineering of the protein vesicle platform has employed amphiphilic self-assembly strategies and rational protein engineering to control physical, chemical, and biological properties for biotechnology and nanomedicine applications.
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Affiliation(s)
- Mikaela
A. Gray
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Dr NW, Atlanta, Georgia 30332, United States
| | - Mariela R. Rodriguez-Otero
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Dr NW, Atlanta, Georgia 30332, United States
- BioEngineering
Program, Georgia Institute of Technology, 950 Atlantic Dr NW, Atlanta, Georgia 30332, United States
| | - Julie A. Champion
- School
of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 950 Atlantic Dr NW, Atlanta, Georgia 30332, United States
- BioEngineering
Program, Georgia Institute of Technology, 950 Atlantic Dr NW, Atlanta, Georgia 30332, United States
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4
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Nilsson BL, Celebi Torabfam G, Dias CL. Peptide Self-Assembly into Amyloid Fibrils: Unbiased All-Atom Simulations. J Phys Chem B 2024; 128:3320-3328. [PMID: 38447080 DOI: 10.1021/acs.jpcb.3c07861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Protein self-assembly plays an important role in biological systems, accounting for the formation of mesoscopic structures that can be highly symmetric as in the capsid of viruses or disordered as in molecular condensates or exhibit a one-dimensional fibrillar morphology as in amyloid fibrils. Deposits of the latter in tissues of individuals with degenerative diseases like Alzheimer's and Parkinson's has motivated extensive efforts to understand the sequence of molecular events accounting for their formation. These studies aim to identify on-pathway intermediates that may be the targets for therapeutic intervention. This detailed knowledge of fibril formation remains obscure, in part due to challenges with experimental analyses of these processes. However, important progress is being achieved for short amyloid peptides due to advances in our ability to perform completely unbiased all-atom simulations of the self-assembly process. This perspective discusses recent developments, their implications, and the hurdles that still need to be overcome to further advance the field.
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Affiliation(s)
- Bradley L Nilsson
- Department of Chemistry, University of Rochester, Rochester, New York 14627-0216, United States
- Materials Science Program, University of Rochester, Rochester, New York 14627-0216, United States
| | - Gizem Celebi Torabfam
- Department of Physics, New Jersey Institute of Technology, Newark, New Jersey 07102-1982, United States
| | - Cristiano L Dias
- Department of Physics, New Jersey Institute of Technology, Newark, New Jersey 07102-1982, United States
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5
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Su H, An H, Tan S, Zhai Y, Fu Y, Li T. pH-Dependent Reversible Self-Assembly of β-Lactoglobulin-Derived Reducing Peptides. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024. [PMID: 38602372 DOI: 10.1021/acs.jafc.4c00249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Peptide-based self-assembled nanostructures are emerging vehicles for nutrient delivery and interface engineering. The present study screened eight β-lactoglobulin (β-Lg) derived peptides and found that two reducing peptides [EQSLVCQCLV (EV-10) and VCQCLVR (VR-7)] demonstrated pH-dependent reversible fibrilization. EV-10 formed fibrils at pH 2.0 but became unordered aggregates at pH 7.0. VR-7 showed the opposite trend. Both peptides could undergo repetitive transitions between fibrils and unordered aggregates during consecutive pH-cycling. Fibrilization of both peptides was dominated by charges carried by N- and C-terminals. Both fibrils were characterized by a cross-β sheet structure where the β-sheet was arranged in an antiparallel manner. Fe3+ was reduced by Cys and EV-10 (pH 5.0 and 7.0) simultaneously upon mixing. In contrast, EV-10 fibrils released Fe3+ reducing capacity progressively, which were beneficial to long-term protection Fe2+. The EV-10 fibrils remained intact after simulated gastric digestion and finally dissociated after intestinal digestion. The results shed light on the mechanisms of fibrilization of β-Lg derived peptides. This study was beneficial to the rational design of smart pH-responsive materials for drug delivery and antioxidants for nutrients susceptible to oxidation.
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Affiliation(s)
- Huanhuan Su
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Hao An
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Siying Tan
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yun Zhai
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Yuying Fu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
| | - Teng Li
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, China
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6
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Guo XY, Yi L, Yang J, An HW, Yang ZX, Wang H. Self-assembly of peptide nanomaterials at biointerfaces: molecular design and biomedical applications. Chem Commun (Camb) 2024; 60:2009-2021. [PMID: 38275083 DOI: 10.1039/d3cc05811e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Self-assembly is an important strategy for constructing ordered structures and complex functions in nature. Based on this, people can imitate nature and artificially construct functional materials with novel structures through the supermolecular self-assembly pathway of biological interfaces. Among the many assembly units, peptide molecular self-assembly has received widespread attention in recent years. In this review, we introduce the interactions (hydrophobic interaction, hydrogen bond, and electrostatic interaction) between peptide nanomaterials and biological interfaces, summarizing the latest advancements in multifunctional self-assembling peptide materials. We systematically demonstrate the assembly mechanisms of peptides at biological interfaces, such as proteins and cell membranes, while highlighting their application potential and challenges in fields like drug delivery, antibacterial strategies, and cancer therapy.
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Affiliation(s)
- Xin-Yuan Guo
- College of Chemistry, Huazhong Agricultural University, Shizishan 1, Hongshan District, Wuhan, 430070, China
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China.
| | - Li Yi
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China.
| | - Jia Yang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China.
| | - Hong-Wei An
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China.
| | - Zi-Xin Yang
- College of Chemistry, Huazhong Agricultural University, Shizishan 1, Hongshan District, Wuhan, 430070, China
| | - Hao Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing, 100190, China.
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7
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Klawa SJ, Lee M, Riker KD, Jian T, Wang Q, Gao Y, Daly ML, Bhonge S, Childers WS, Omosun TO, Mehta AK, Lynn DG, Freeman R. Uncovering supramolecular chirality codes for the design of tunable biomaterials. Nat Commun 2024; 15:788. [PMID: 38278785 PMCID: PMC10817930 DOI: 10.1038/s41467-024-45019-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/12/2024] [Indexed: 01/28/2024] Open
Abstract
In neurodegenerative diseases, polymorphism and supramolecular assembly of β-sheet amyloids are implicated in many different etiologies and may adopt either a left- or right-handed supramolecular chirality. Yet, the underlying principles of how sequence regulates supramolecular chirality remains unknown. Here, we characterize the sequence specificity of the central core of amyloid-β 42 and design derivatives which enable chirality inversion at biologically relevant temperatures. We further find that C-terminal modifications can tune the energy barrier of a left-to-right chiral inversion. Leveraging this design principle, we demonstrate how temperature-triggered chiral inversion of peptides hosting therapeutic payloads modulates the dosed release of an anticancer drug. These results suggest a generalizable approach for fine-tuning supramolecular chirality that can be applied in developing treatments to regulate amyloid morphology in neurodegeneration as well as in other disease states.
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Affiliation(s)
- Stephen J Klawa
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Michelle Lee
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
| | - Kyle D Riker
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Tengyue Jian
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
- Broad Pharm, San Diego, California, 92121, USA
| | - Qunzhao Wang
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Yuan Gao
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Margaret L Daly
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Shreeya Bhonge
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - W Seth Childers
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Tolulope O Omosun
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
- U.S. Department of Justice, Chicago, IL, 60603, USA
| | - Anil K Mehta
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA
- The National High Magnetic Field Laboratory, University of Florida, Gainesville, FL, 32611, USA
| | - David G Lynn
- Department of Chemistry, Emory University, Atlanta, GA, 30322, USA.
- Department of Biology, Emory University, Atlanta, GA, 30322, USA.
| | - Ronit Freeman
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA.
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8
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Tikhonova T, Cohen-Gerassi D, Arnon ZA, Efremov Y, Timashev P, Adler-Abramovich L, Shirshin EA. Tunable Self-Assembled Peptide Hydrogel Sensor for Pharma Cold Supply Chain. ACS APPLIED MATERIALS & INTERFACES 2022; 14:55392-55401. [PMID: 36475602 PMCID: PMC9782340 DOI: 10.1021/acsami.2c17609] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 11/21/2022] [Indexed: 06/17/2023]
Abstract
Defrost sensors are a crucial element for proper functioning of the pharmaceutical cold chain. In this paper, the self-assembled peptide-based hydrogels were used to construct a sensitive defrost sensor for the transportation and storage of medications and biomaterials. The turbidity of the peptide hydrogel was employed as a marker of the temperature regime. The gelation kinetics under different conditions was studied to detect various stages of hydrogel structural transitions aimed at tuning the system properties. The developed sensor can be stored at room temperature for a long period, irreversibly indicates whether the product has been thawed, and can be adjusted to a specific temperature range and detection time.
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Affiliation(s)
- Tatiana
N. Tikhonova
- Department
of Physics, M.V. Lomonosov Moscow State
University, Leninskie gory 1/2, Moscow119991, Russia
- SBIH
Vorohobov’s City Clinical Hospital No. 67 MHD Moscow, 2/44 Salam Adil St., Moscow123423, Russia
| | - Dana Cohen-Gerassi
- Department
of Oral Biology, The Goldschleger School of Dental Medicine, Sackler
Faculty of Medicine, The Center for Nanoscience and Nanotechnology,
The Center for the Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv69978, Israel
| | - Zohar A. Arnon
- Department
of Oral Biology, The Goldschleger School of Dental Medicine, Sackler
Faculty of Medicine, The Center for Nanoscience and Nanotechnology,
The Center for the Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv69978, Israel
| | - Yuri Efremov
- World-Class
Research Center “Digital Biodesign and Personalized Healthcare”, Sechenov First Moscow State Medical University 8-2, Trubetskaya St., Moscow119991, Russia
- Institute
for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya St., Moscow119991, Russia
| | - Peter Timashev
- World-Class
Research Center “Digital Biodesign and Personalized Healthcare”, Sechenov First Moscow State Medical University 8-2, Trubetskaya St., Moscow119991, Russia
- Institute
for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya St., Moscow119991, Russia
| | - Lihi Adler-Abramovich
- Department
of Oral Biology, The Goldschleger School of Dental Medicine, Sackler
Faculty of Medicine, The Center for Nanoscience and Nanotechnology,
The Center for the Physics and Chemistry of Living Systems, Tel Aviv University, Tel Aviv69978, Israel
| | - Evgeny A. Shirshin
- Department
of Physics, M.V. Lomonosov Moscow State
University, Leninskie gory 1/2, Moscow119991, Russia
- World-Class
Research Center “Digital Biodesign and Personalized Healthcare”, Sechenov First Moscow State Medical University 8-2, Trubetskaya St., Moscow119991, Russia
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9
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Gordon-Kim C, Rha A, Poppitz GA, Smith-Carpenter J, Luu R, Roberson AB, Conklin R, Blake A, Lynn DG. Polyanion order controls liquid-to-solid phase transition in peptide/nucleic acid co-assembly. Front Mol Biosci 2022; 9:991728. [PMID: 36452451 PMCID: PMC9702359 DOI: 10.3389/fmolb.2022.991728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 10/25/2022] [Indexed: 01/06/2024] Open
Abstract
The Central Dogma highlights the mutualistic functions of protein and nucleic acid biopolymers, and this synergy appears prominently in the membraneless organelles widely distributed throughout prokaryotic and eukaryotic organisms alike. Ribonucleoprotein granules (RNPs), which are complex coacervates of RNA with proteins, are a prime example of these membranelles organelles and underly multiple essential cellular functions. Inspired by the highly dynamic character of these organelles and the recent studies that ATP both inhibits and templates phase separation of the fused in sarcoma (FUS) protein implicated in several neurodegenerative diseases, we explored the RNA templated ordering of a single motif of the Aβ peptide of Alzheimer's disease. We now know that this strong cross-β propensity motif alone assembles through a liquid-like coacervate phase that can be externally templated to form distinct supramolecular assemblies. Now we provide evidence that structured phosphates, ranging from complex structures like double stranded and quadraplex DNA to simple trimetaphosphate, differentially impact the liquid to solid phase transition necessary for paracrystalline assembly. The results from this simple model illustrate the potential of ordered environmental templates in the transition to potentially irreversible pathogenic assemblies and provides insight into the ordering dynamics necessary for creating functional synthetic polymer co-assemblies.
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Affiliation(s)
| | - Allisandra Rha
- Children’s Health of Orange County, Research Institute, Orange, CA, United States
| | - George A. Poppitz
- Department of Chemistry, Emory University, Atlanta, GA, United States
| | | | - Regina Luu
- Department of Chemistry, Emory University, Atlanta, GA, United States
| | | | - Russell Conklin
- Department of Chemistry, Emory University, Atlanta, GA, United States
| | - Alexis Blake
- Department of Chemistry, Emory University, Atlanta, GA, United States
| | - David G. Lynn
- Department of Chemistry, Emory University, Atlanta, GA, United States
- Department of Biology, Emory University, Atlanta, GA, United States
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10
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Jain A, Kassem S, Fisher RS, Wang B, Li TD, Wang T, He Y, Elbaum-Garfinkle S, Ulijn RV. Connected Peptide Modules Enable Controlled Co-Existence of Self-Assembled Fibers Inside Liquid Condensates. J Am Chem Soc 2022; 144:15002-15007. [PMID: 35946870 DOI: 10.1021/jacs.2c05897] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Supramolecular self-assembly of fibrous components and liquid-liquid phase separation are at the extremes of the order-to-disorder spectrum. They collectively play key roles in cellular organization. It is still a major challenge to design systems where both highly ordered nanostructures and liquid-liquid phase-separated domains can coexist. We present a three-component assembly approach that generates fibrous domains that exclusively form inside globally disordered, liquid condensates. This is achieved by creating amphiphilic peptides that combine the features of fibrillar assembly (the amyloid domain LVFFA) and complex coacervation (oligo-arginine and adenosine triphosphate (ATP)) in one peptide, namely, LVFFAR9. When this hybrid peptide is mixed in different ratios with R9 and ATP, we find that conditions can be created where fibrous assembly is exclusively observed inside liquid coacervates. Through fluorescence and atomic force microscopy characterization, we investigate the dynamic evolution of ordered and disordered features over time. It was observed that the fibers nucleate and mature inside the droplets and that these fiber-containing liquid droplets can also undergo fusion, showing that the droplets remain liquid-like. Our work thus generates opportunities for the design of ordered structures within the confined environment of biomolecular condensates, which may be useful to create supramolecular materials in defined compartments and as model systems that can enhance understanding of ordering principles in biology.
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Affiliation(s)
- Ankit Jain
- Nanoscience Initiative at Advanced Science Research Center, Graduate Center of the City University of New York, New York, New York 10031, United States
| | - Salma Kassem
- Nanoscience Initiative at Advanced Science Research Center, Graduate Center of the City University of New York, New York, New York 10031, United States
| | - Rachel S Fisher
- Structural Biology Initiative at Advanced Science Research Center, Graduate Center of the City University of New York, New York, New York 10031, United States
| | - Biran Wang
- Molecular Cytology, Memorial Sloan Kettering Cancer Center, New York, New York 10065, United States
| | - Tai-De Li
- Nanoscience Initiative at Advanced Science Research Center, Graduate Center of the City University of New York, New York, New York 10031, United States.,Department of Physics, City College of New York, City University of New York, New York, New York 10031, United States
| | - Tong Wang
- Nanoscience Initiative at Advanced Science Research Center, Graduate Center of the City University of New York, New York, New York 10031, United States
| | - Ye He
- Neuroscience Initiative at Advanced Science Research Center, Graduate Center of the City University of New York, New York, New York 10031, United States.,Division of Science, The City College of New York, New York, New York 10031, United States
| | - Shana Elbaum-Garfinkle
- Structural Biology Initiative at Advanced Science Research Center, Graduate Center of the City University of New York, New York, New York 10031, United States.,Ph.D. Programs in Biochemistry and Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States
| | - Rein V Ulijn
- Nanoscience Initiative at Advanced Science Research Center, Graduate Center of the City University of New York, New York, New York 10031, United States.,Ph.D. Programs in Biochemistry and Chemistry, The Graduate Center of the City University of New York, New York, New York 10016, United States.,Department of Chemistry Hunter College, City University of New York, New York, New York 10065, United States
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11
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Cai X, Han W. Development of a Hybrid-Resolution Force Field for Peptide Self-Assembly Simulations: Optimizing Peptide-Peptide and Peptide-Solvent Interactions. J Chem Inf Model 2022; 62:2744-2760. [PMID: 35561002 DOI: 10.1021/acs.jcim.2c00066] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Atomic descriptions of peptide self-assembly are crucial to an understanding of disease-related peptide aggregation and the design of peptide-assembled materials. Obtaining these descriptions through computer simulation is challenging because current force fields, which were not designed for this process and are often unable to describe correctly peptide self-assembly behavior and the sequence dependence. Here, we developed a framework using dipeptide aggregation as a model system to improve force fields for simulations of self-assembly. Aggregation-related structural properties were designed and used to guide the optimization of peptide-peptide and peptide-solvent interactions. With this framework, we developed a self-assembly force field, termed PACE-ASM, by reoptimizing a hybrid-resolution force field that was originally developed for folding simulation. With its applicability in folding simulations, the new PACE was used to simulate the self-assembly of two disease-related short peptides, Aβ16-21 and PHF6, into β-sheet-rich cross-β amyloids. These simulations reproduced the crystal structures of Aβ16-21 and PHF6 amyloids at near-atomic resolution and captured the difference in packing orientations between the two sequences, a task which is challenging even with all-atom force fields. Apart from cross-β amyloids, the self-assembly of emerging helix-rich cross-α amyloids by another peptide PSMα3 can also be correctly described with the new PACE, manifesting the versatility of the force field. We demonstrated that the ability of the PACE-ASM to model peptide self-assembly is based largely on its improved description of peptide-peptide and peptide-solvent interactions. This was achieved with our optimization framework that can readily identify and address the deficiency in describing these interactions.
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Affiliation(s)
- Xiang Cai
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Wei Han
- State Key Laboratory of Chemical Oncogenomics, Guangdong Provincial Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University Shenzhen Graduate School, Shenzhen 518055, China.,Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen 518132, China
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12
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Jia G, Chen Y, Sun A, Orlien V. Control of ice crystal nucleation and growth during the food freezing process. Compr Rev Food Sci Food Saf 2022; 21:2433-2454. [DOI: 10.1111/1541-4337.12950] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 03/01/2022] [Accepted: 03/05/2022] [Indexed: 12/14/2022]
Affiliation(s)
- Guoliang Jia
- College of Biological Sciences and Technology Beijing Forestry University Beijing China
- Beijing Key Laboratory of Forest Food Processing and Safety Beijing Forestry University Beijing China
| | - Yimeng Chen
- College of Biological Sciences and Technology Beijing Forestry University Beijing China
- Beijing Key Laboratory of Forest Food Processing and Safety Beijing Forestry University Beijing China
| | - AiDong Sun
- College of Biological Sciences and Technology Beijing Forestry University Beijing China
- Beijing Key Laboratory of Forest Food Processing and Safety Beijing Forestry University Beijing China
| | - Vibeke Orlien
- Department of Food Science Faculty of Science University of Copenhagen Frederiksberg C Denmark
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13
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Tikhonova TN, Rovnyagina NN, Arnon ZA, Yakimov BP, Efremov YM, Cohen‐Gerassi D, Halperin‐Sternfeld M, Kosheleva NV, Drachev VP, Svistunov AA, Timashev PS, Adler‐Abramovich L, Shirshin EA. Mechanical Enhancement and Kinetics Regulation of Fmoc‐Diphenylalanine Hydrogels by Thioflavin T. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107063] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tatiana N. Tikhonova
- Department of Physics M. V. Lomonosov Moscow State University Leninskie gory 1/2 119991 Moscow Russia
| | - Nataliya N. Rovnyagina
- World-Class Research Center “Digital biodesign and personalized healthcare” Sechenov First Moscow State Medical University 8-2, Trubetskaya st. 119991 Moscow Russia
| | - Zohar A. Arnon
- Department of Oral Biology The Goldschleger School of Dental Medicine Sackler Faculty of Medicine The Center for Nanoscience and Nanotechnology The Center for the Physics and Chemistry of Living Systems Tel Aviv University 69978 Tel Aviv Israel
| | - Boris P. Yakimov
- Department of Physics M. V. Lomonosov Moscow State University Leninskie gory 1/2 119991 Moscow Russia
- World-Class Research Center “Digital biodesign and personalized healthcare” Sechenov First Moscow State Medical University 8-2, Trubetskaya st. 119991 Moscow Russia
| | - Yuri M. Efremov
- World-Class Research Center “Digital biodesign and personalized healthcare” Sechenov First Moscow State Medical University 8-2, Trubetskaya st. 119991 Moscow Russia
- Institute for Regenerative Medicine Sechenov University 8-2 Trubetskaya st. 119991 Moscow Russia
| | - Dana Cohen‐Gerassi
- Department of Oral Biology The Goldschleger School of Dental Medicine Sackler Faculty of Medicine The Center for Nanoscience and Nanotechnology The Center for the Physics and Chemistry of Living Systems Tel Aviv University 69978 Tel Aviv Israel
| | - Michal Halperin‐Sternfeld
- Department of Oral Biology The Goldschleger School of Dental Medicine Sackler Faculty of Medicine The Center for Nanoscience and Nanotechnology The Center for the Physics and Chemistry of Living Systems Tel Aviv University 69978 Tel Aviv Israel
| | - Nastasia V. Kosheleva
- Institute for Regenerative Medicine Sechenov University 8-2 Trubetskaya st. 119991 Moscow Russia
| | - Vladimir P. Drachev
- Center for Photonics and Quantum Materials Skolkovo Institute of Science and Technology Skolkovo Innovation Center Nobel st, Building 3 121205 Moscow Russia
| | - Andrey A. Svistunov
- World-Class Research Center “Digital biodesign and personalized healthcare” Sechenov First Moscow State Medical University 8-2, Trubetskaya st. 119991 Moscow Russia
| | - Peter S. Timashev
- World-Class Research Center “Digital biodesign and personalized healthcare” Sechenov First Moscow State Medical University 8-2, Trubetskaya st. 119991 Moscow Russia
- Institute for Regenerative Medicine Sechenov University 8-2 Trubetskaya st. 119991 Moscow Russia
- N.N. Semenov Federal Research Center for Chemical Physics Russian Academy of Sciences Kosigina str., 4 119991 Moscow Russia
- Chemistry Department Lomonosov Moscow State University Leninskiye Gory 1–3 119991 Moscow Russia
| | - Lihi Adler‐Abramovich
- Department of Oral Biology The Goldschleger School of Dental Medicine Sackler Faculty of Medicine The Center for Nanoscience and Nanotechnology The Center for the Physics and Chemistry of Living Systems Tel Aviv University 69978 Tel Aviv Israel
| | - Evgeny A. Shirshin
- Department of Physics M. V. Lomonosov Moscow State University Leninskie gory 1/2 119991 Moscow Russia
- World-Class Research Center “Digital biodesign and personalized healthcare” Sechenov First Moscow State Medical University 8-2, Trubetskaya st. 119991 Moscow Russia
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14
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Tikhonova TN, Rovnyagina NN, Arnon ZA, Yakimov BP, Efremov YM, Cohen-Gerassi D, Halperin-Sternfeld M, Kosheleva NV, Drachev VP, Svistunov AA, Timashev PS, Adler-Abramovich L, Shirshin EA. Mechanical Enhancement and Kinetics Regulation of Fmoc-Diphenylalanine Hydrogels by Thioflavin T. Angew Chem Int Ed Engl 2021; 60:25339-25345. [PMID: 34590774 DOI: 10.1002/anie.202107063] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 08/20/2021] [Indexed: 11/11/2022]
Abstract
The self-assembly of peptides is a key direction for fabrication of advanced materials. Novel approaches for fine tuning of macroscopic and microscopic properties of peptide self-assemblies are of a high demand for constructing biomaterials with desired properties. In this work, while studying the kinetics of the Fmoc-Diphenylalanine (Fmoc-FF) dipeptide self-assembly using the Thioflavin T (ThT) dye, we observed that the presence of ThT strongly modifies structural and mechanical properties of the Fmoc-FF hydrogel. Notably, the presence of ThT resulted in a tenfold increase of the gelation time and in the formation of short and dense fibers in the hydrogel. As a result of these morphological alteration higher thermal stability, and most important, tenfold increase of the hydrogel rigidity was achieved. Hence, ThT not only slowed the kinetics of the Fmoc-FF hydrogel formation, but also strongly enhanced its mechanical properties. In this study, we provide a detailed description of the ThT effect on the hydrogel properties and suggest the mechanisms for this phenomenon, paving the way for the novel approach to the control of the peptide hydrogels' micro- and macroscale properties.
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Affiliation(s)
- Tatiana N Tikhonova
- Department of Physics, M. V. Lomonosov Moscow State University, Leninskie gory 1/2, 119991, Moscow, Russia
| | - Nataliya N Rovnyagina
- World-Class Research Center "Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, 8-2, Trubetskaya st., 119991, Moscow, Russia
| | - Zohar A Arnon
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, The Center for Nanoscience and Nanotechnology, The Center for the Physics and Chemistry of Living Systems, Tel Aviv University, 69978, Tel Aviv, Israel
| | - Boris P Yakimov
- Department of Physics, M. V. Lomonosov Moscow State University, Leninskie gory 1/2, 119991, Moscow, Russia.,World-Class Research Center "Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, 8-2, Trubetskaya st., 119991, Moscow, Russia
| | - Yuri M Efremov
- World-Class Research Center "Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, 8-2, Trubetskaya st., 119991, Moscow, Russia.,Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., 119991, Moscow, Russia
| | - Dana Cohen-Gerassi
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, The Center for Nanoscience and Nanotechnology, The Center for the Physics and Chemistry of Living Systems, Tel Aviv University, 69978, Tel Aviv, Israel
| | - Michal Halperin-Sternfeld
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, The Center for Nanoscience and Nanotechnology, The Center for the Physics and Chemistry of Living Systems, Tel Aviv University, 69978, Tel Aviv, Israel
| | - Nastasia V Kosheleva
- Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., 119991, Moscow, Russia
| | - Vladimir P Drachev
- Center for Photonics and Quantum Materials, Skolkovo Institute of Science and Technology, Skolkovo Innovation Center, Nobel st, Building 3, 121205, Moscow, Russia
| | - Andrey A Svistunov
- World-Class Research Center "Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, 8-2, Trubetskaya st., 119991, Moscow, Russia
| | - Peter S Timashev
- World-Class Research Center "Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, 8-2, Trubetskaya st., 119991, Moscow, Russia.,Institute for Regenerative Medicine, Sechenov University, 8-2 Trubetskaya st., 119991, Moscow, Russia.,N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Kosigina str., 4, 119991, Moscow, Russia.,Chemistry Department, Lomonosov Moscow State University, Leninskiye Gory 1-3, 119991, Moscow, Russia
| | - Lihi Adler-Abramovich
- Department of Oral Biology, The Goldschleger School of Dental Medicine, Sackler Faculty of Medicine, The Center for Nanoscience and Nanotechnology, The Center for the Physics and Chemistry of Living Systems, Tel Aviv University, 69978, Tel Aviv, Israel
| | - Evgeny A Shirshin
- Department of Physics, M. V. Lomonosov Moscow State University, Leninskie gory 1/2, 119991, Moscow, Russia.,World-Class Research Center "Digital biodesign and personalized healthcare", Sechenov First Moscow State Medical University, 8-2, Trubetskaya st., 119991, Moscow, Russia
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15
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Strong inhibition of peptide amyloid formation by a fatty acid. Biophys J 2021; 120:4536-4546. [PMID: 34478699 PMCID: PMC8553643 DOI: 10.1016/j.bpj.2021.08.035] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 08/10/2021] [Accepted: 08/26/2021] [Indexed: 11/27/2022] Open
Abstract
The aggregation of peptides into amyloid fibrils is associated with several diseases, including Alzheimer’s and Parkinson’s disease. Because hydrophobic interactions often play an important role in amyloid formation, the presence of various hydrophobic or amphiphilic molecules, such as lipids, may influence the aggregation process. We have studied the effect of a fatty acid, linoleic acid, on the fibrillation process of the amyloid-forming model peptide NACore (GAVVTGVTAVA). NACore is a peptide fragment spanning residue 68–78 of the protein α-synuclein involved in Parkinson’s disease. Based primarily on circular dichroism measurements, we found that even a very small amount of linoleic acid can substantially inhibit the fibrillation of NACore. This inhibitory effect manifests itself through a prolongation of the lag phase of the peptide fibrillation. The effect is greatest when the fatty acid is present from the beginning of the process together with the monomeric peptide. Cryogenic transmission electron microscopy revealed the presence of nonfibrillar clusters among NACore fibrils formed in the presence of linoleic acid. We argue that the observed inhibitory effect on fibrillation is due to co-association of peptide oligomers and fatty acid aggregates at the early stage of the process. An important aspect of this mechanism is that it is nonmonomeric peptide structures that associate with the fatty acid aggregates. Similar mechanisms of action could be relevant in amyloid formation occurring in vivo, where the aggregation takes place in a lipid-rich environment.
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16
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Zuo R, Liu R, Olguin J, Hudalla GA. Glycosylation of a Nonfibrillizing Appendage Alters the Self-Assembly Pathway of a Synthetic β-Sheet Fibrillizing Peptide. J Phys Chem B 2021; 125:6559-6571. [PMID: 34128680 PMCID: PMC9191660 DOI: 10.1021/acs.jpcb.1c02083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Owing to their biocompatibility and biodegradability, short synthetic peptides that self-assemble into elongated β-sheet fibers (i.e., peptide nanofibers) are widely used to create biomaterials for diverse medical and biotechnology applications. Glycosylation, which is a common protein post-translational modification, is gaining interest for creating peptide nanofibers that can mimic the function of natural carbohydrate-modified proteins. Recent reports have shown that glycosylation can disrupt the fibrillization of natural amyloid-forming peptides. Here, using transmission electron microscopy, fluorescence microscopy, and thioflavin T spectroscopy, we show that glycosylation at a site external to the fibrillization domain can alter the self-assembly pathway of a synthetic fibrillizing peptide, NSGSGQQKFQFQFEQQ (NQ11). Specifically, an NQ11 variant modified with N-linked N-acetylglucosamine, N(GlcNAc)SGSG-Q11 (GQ11), formed β-sheet nanofibers more slowly than NQ11 in deionized water (pH 5.8), which correlated to the tendency of GQ11 to form a combination of short fibrils and nonfibrillar aggregates, whereas NQ11 formed extended nanofibers. Acidic phosphate buffer slowed the rate of GQ11 fibrillization and altered the morphology of the structures formed yet had no effect on NQ11 fibrillization rate or morphology. The buffer ionic strength had no effect on the fibrillization rate of either peptide, while the diphosphate anion had a similar effect on the rate of fibrillization of both peptides. Collectively, these data demonstrate that a glycan moiety located external to the β-sheet fibrillizing domain can alter the pH-dependent self-assembly pathway of a synthetic peptide, leading to significant changes in the fibril mass and morphology of the structures formed. These observations add to the understanding of the effect of glycosylation on peptide self-assembly and should guide future efforts to develop biomaterials from synthetic β-sheet fibrillizing glycopeptides.
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Affiliation(s)
- Ran Zuo
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Renjie Liu
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Juanpablo Olguin
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Gregory A. Hudalla
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, 32611, USA
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17
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Lau CYJ, Mastrobattista E. Programming supramolecular peptide materials by modulating the intermediate steps in the complex assembly pathway: Implications for biomedical applications. Curr Opin Colloid Interface Sci 2021. [DOI: 10.1016/j.cocis.2020.101396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Tan J, Zhang L, Hsieh MC, Goodwin JT, Grover MA, Lynn DG. Chemical control of peptide material phase transitions. Chem Sci 2021; 12:3025-3031. [PMID: 34164071 PMCID: PMC8179288 DOI: 10.1039/d0sc03666h] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Progressive solute-rich polymer phase transitions provide pathways for achieving ordered supramolecular assemblies. Intrinsically disordered protein domains specifically regulate information in biological networks via conformational ordering. Here we consider a molecular tagging strategy to control ordering transitions in polymeric materials and provide a proof-of-principle minimal peptide phase network captured with a dynamic chemical network. Substrate initiated assembly of a dynamic chemical network.![]()
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Affiliation(s)
- Junjun Tan
- Department of Chemistry and Biology, Emory University Atlanta Georgia 30322 USA
| | - Li Zhang
- Department of Chemistry and Biology, Emory University Atlanta Georgia 30322 USA
| | - Ming-Chien Hsieh
- Department of Chemistry and Biology, Emory University Atlanta Georgia 30322 USA .,School of Chemical and Biomolecular Engineering, Georgia Institute of Technology Atlanta Georgia 30332 USA
| | - Jay T Goodwin
- Department of Chemistry and Biology, Emory University Atlanta Georgia 30322 USA
| | - Martha A Grover
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology Atlanta Georgia 30332 USA
| | - David G Lynn
- Department of Chemistry and Biology, Emory University Atlanta Georgia 30322 USA
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19
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Seroski DT, Dong X, Wong KM, Liu R, Shao Q, Paravastu AK, Hall CK, Hudalla GA. Charge guides pathway selection in β-sheet fibrillizing peptide co-assembly. Commun Chem 2020; 3:172. [PMID: 36703436 PMCID: PMC9814569 DOI: 10.1038/s42004-020-00414-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 10/15/2020] [Indexed: 01/29/2023] Open
Abstract
Peptide co-assembly is attractive for creating biomaterials with new forms and functions. Emergence of these properties depends on the peptide content of the final assembled structure, which is difficult to predict in multicomponent systems. Here using experiments and simulations we show that charge governs content by affecting propensity for self- and co-association in binary CATCH(+/-) peptide systems. Equimolar mixtures of CATCH(2+/2-), CATCH(4+/4-), and CATCH(6+/6-) formed two-component β-sheets. Solid-state NMR suggested the cationic peptide predominated in the final assemblies. The cationic-to-anionic peptide ratio decreased with increasing charge. CATCH(2+) formed β-sheets when alone, whereas the other peptides remained unassembled. Fibrillization rate increased with peptide charge. The zwitterionic CATCH parent peptide, "Q11", assembled slowly and only at decreased simulation temperature. These results demonstrate that increasing charge draws complementary peptides together faster, favoring co-assembly, while like-charged molecules repel. We foresee these insights enabling development of co-assembled peptide biomaterials with defined content and predictable properties.
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Affiliation(s)
- Dillon T Seroski
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Xin Dong
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27695, USA
| | - Kong M Wong
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Renjie Liu
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, 32611, USA
| | - Qing Shao
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27695, USA
| | - Anant K Paravastu
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Carol K Hall
- Department of Chemical and Biomolecular Engineering, North Carolina State University, 911 Partners Way, Raleigh, NC, 27695, USA
| | - Gregory A Hudalla
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, 32611, USA.
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20
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Lau CYJ, Fontana F, Mandemaker LDB, Wezendonk D, Vermeer B, Bonvin AMJJ, de Vries R, Zhang H, Remaut K, van den Dikkenberg J, Medeiros-Silva J, Hassan A, Perrone B, Kuemmerle R, Gelain F, Hennink WE, Weingarth M, Mastrobattista E. Control over the fibrillization yield by varying the oligomeric nucleation propensities of self-assembling peptides. Commun Chem 2020; 3:164. [PMID: 36703336 PMCID: PMC9814929 DOI: 10.1038/s42004-020-00417-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 10/19/2020] [Indexed: 01/29/2023] Open
Abstract
Self-assembling peptides are an exemplary class of supramolecular biomaterials of broad biomedical utility. Mechanistic studies on the peptide self-assembly demonstrated the importance of the oligomeric intermediates towards the properties of the supramolecular biomaterials being formed. In this study, we demonstrate how the overall yield of the supramolecular assemblies are moderated through subtle molecular changes in the peptide monomers. This strategy is exemplified with a set of surfactant-like peptides (SLPs) with different β-sheet propensities and charged residues flanking the aggregation domains. By integrating different techniques, we show that these molecular changes can alter both the nucleation propensity of the oligomeric intermediates and the thermodynamic stability of the fibril structures. We demonstrate that the amount of assembled nanofibers are critically defined by the oligomeric nucleation propensities. Our findings offer guidance on designing self-assembling peptides for different biomedical applications, as well as insights into the role of protein gatekeeper sequences in preventing amyloidosis.
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Affiliation(s)
- Chun Yin Jerry Lau
- grid.5477.10000000120346234Utrecht Institute for Pharmaceutical Sciences, Department of Pharmaceutics, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Federico Fontana
- grid.413503.00000 0004 1757 9135IRCCS Casa Sollievo della Sofferenza, Opera di San Pio da Pietralcina, Viale Capuccini 1, 71013 San Giovanni Rotondo, Italy
| | - Laurens D. B. Mandemaker
- grid.5477.10000000120346234Inorganic Chemistry and Catalysis Group, Debye Institute for Nanomaterials Science, Department of Chemistry, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Dennie Wezendonk
- grid.5477.10000000120346234Inorganic Chemistry and Catalysis Group, Debye Institute for Nanomaterials Science, Department of Chemistry, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Benjamin Vermeer
- grid.5477.10000000120346234NMR Spectroscopy, Bijvoet Centre for Biomolecular Research, Department of Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Alexandre M. J. J. Bonvin
- grid.5477.10000000120346234NMR Spectroscopy, Bijvoet Centre for Biomolecular Research, Department of Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Renko de Vries
- grid.4818.50000 0001 0791 5666Laboratory of Physical Chemistry and Colloid Science, Wageningen University, Dreijenplein 6, 6703 HB Wageningen, The Netherlands
| | - Heyang Zhang
- grid.5342.00000 0001 2069 7798Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Katrien Remaut
- grid.5342.00000 0001 2069 7798Ghent Research Group on Nanomedicines, Laboratory of General Biochemistry and Physical Pharmacy, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium
| | - Joep van den Dikkenberg
- grid.5477.10000000120346234Utrecht Institute for Pharmaceutical Sciences, Department of Pharmaceutics, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - João Medeiros-Silva
- grid.5477.10000000120346234NMR Spectroscopy, Bijvoet Centre for Biomolecular Research, Department of Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Alia Hassan
- grid.481597.60000 0004 0452 3124Bruker BioSpin AG, Industriestrasse 26, 8117 Fällanden, Switzerland
| | - Barbara Perrone
- grid.481597.60000 0004 0452 3124Bruker BioSpin AG, Industriestrasse 26, 8117 Fällanden, Switzerland
| | - Rainer Kuemmerle
- grid.481597.60000 0004 0452 3124Bruker BioSpin AG, Industriestrasse 26, 8117 Fällanden, Switzerland
| | - Fabrizio Gelain
- grid.413503.00000 0004 1757 9135IRCCS Casa Sollievo della Sofferenza, Opera di San Pio da Pietralcina, Viale Capuccini 1, 71013 San Giovanni Rotondo, Italy ,ASST Grande Ospedale Metropolitano Niguarda, Center for Nanomedicine and Tissue Engineering, Piazza dell’Ospedale Maggiore 3, 20162 Milan, Italy
| | - Wim E. Hennink
- grid.5477.10000000120346234Utrecht Institute for Pharmaceutical Sciences, Department of Pharmaceutics, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
| | - Markus Weingarth
- grid.5477.10000000120346234NMR Spectroscopy, Bijvoet Centre for Biomolecular Research, Department of Chemistry, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Enrico Mastrobattista
- grid.5477.10000000120346234Utrecht Institute for Pharmaceutical Sciences, Department of Pharmaceutics, Faculty of Science, Utrecht University, Universiteitsweg 99, 3584 CG Utrecht, The Netherlands
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21
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Yang J, An HW, Wang H. Self-Assembled Peptide Drug Delivery Systems. ACS APPLIED BIO MATERIALS 2020; 4:24-46. [DOI: 10.1021/acsabm.0c00707] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Jia Yang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P.R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Hong-Wei An
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P.R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P.R. China
| | - Hao Wang
- CAS Center for Excellence in Nanoscience, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P.R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P.R. China
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22
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Ghosh DK, Ranjan A. The metastable states of proteins. Protein Sci 2020; 29:1559-1568. [PMID: 32223005 PMCID: PMC7314396 DOI: 10.1002/pro.3859] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 03/23/2020] [Accepted: 03/24/2020] [Indexed: 12/26/2022]
Abstract
The intriguing process of protein folding comprises discrete steps that stabilize the protein molecules in different conformations. The metastable state of protein is represented by specific conformational characteristics, which place the protein in a local free energy minimum state of the energy landscape. The native-to-metastable structural transitions are governed by transient or long-lived thermodynamic and kinetic fluctuations of the intrinsic interactions of the protein molecules. Depiction of the structural and functional properties of metastable proteins is not only required to understand the complexity of folding patterns but also to comprehend the mechanisms of anomalous aggregation of different proteins. In this article, we review the properties of metastable proteins in context of their stability and capability of undergoing atypical aggregation in physiological conditions.
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Affiliation(s)
- Debasish Kumar Ghosh
- Computational and Functional Genomics Group, Centre for DNA Fingerprinting and DiagnosticsUppal, HyderabadTelanganaIndia
| | - Akash Ranjan
- Computational and Functional Genomics Group, Centre for DNA Fingerprinting and DiagnosticsUppal, HyderabadTelanganaIndia
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23
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Rengifo RF, Sementilli A, Kim Y, Liang C, Li NX, Mehta AK, Lynn DG. Liquid‐Like Phases Preorder Peptides for Supramolecular Assembly. CHEMSYSTEMSCHEM 2020. [DOI: 10.1002/syst.202000007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Rolando F. Rengifo
- Chemistry Department Emory University 1515 Dickey Drive Atlanta GA 30322
| | - Anthony Sementilli
- Chemistry Department Emory University 1515 Dickey Drive Atlanta GA 30322
| | - Youngsun Kim
- Chemistry Department Emory University 1515 Dickey Drive Atlanta GA 30322
| | - Chen Liang
- Chemistry Department Emory University 1515 Dickey Drive Atlanta GA 30322
| | - Noel Xiang'An Li
- Chemistry Department Emory University 1515 Dickey Drive Atlanta GA 30322
| | - Anil K. Mehta
- Chemistry Department Emory University 1515 Dickey Drive Atlanta GA 30322
| | - David G. Lynn
- Chemistry Department Emory University 1515 Dickey Drive Atlanta GA 30322
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24
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Nguyen PH, Sterpone F, Derreumaux P. Aggregation of disease-related peptides. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2020; 170:435-460. [PMID: 32145950 DOI: 10.1016/bs.pmbts.2019.12.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Protein misfolding and aggregation of amyloid proteins is the fundamental cause of more than 20 diseases. Molecular mechanisms of the self-assembly and the formation of the toxic aggregates are still elusive. Computer simulations have been intensively used to study the aggregation of amyloid peptides of various amino acid lengths related to neurodegenerative diseases. We review atomistic and coarse-grained simulations of short amyloid peptides aimed at determining their transient oligomeric structures and the early and late aggregation steps.
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Affiliation(s)
- Phuong H Nguyen
- CNRS, Université de Paris, UPR 9080, Laboratoire de Biochimie Théorique, Paris, France; Institut de Biologie Physico-Chimique-Fondation Edmond de Rothschild, PSL Research University, Paris, France
| | - Fabio Sterpone
- CNRS, Université de Paris, UPR 9080, Laboratoire de Biochimie Théorique, Paris, France; Institut de Biologie Physico-Chimique-Fondation Edmond de Rothschild, PSL Research University, Paris, France
| | - Philippe Derreumaux
- Laboratory of Theoretical Chemistry, Ton Duc Thang University, Ho Chi Minh City, Vietnam; Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, Vietnam.
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25
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Wang Z, Shang Y, Tan Z, Li X, Li G, Ren C, Wang F, Yang Z, Liu J. A supramolecular protein chaperone for vaccine delivery. Theranostics 2020; 10:657-670. [PMID: 31903143 PMCID: PMC6929975 DOI: 10.7150/thno.39132] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 09/26/2019] [Indexed: 12/11/2022] Open
Abstract
Rationale: Nanomaterials capable of specifically interacting with proteins are very important for protein storage and vaccine delivery. Supramolecular hydrogels based on peptides have emerged as promising vaccine adjuvants because of their good compatibility, ease of antigen incorporation and display, and efficiency in activating immune responses. Methods: We synthesized a self-assembling peptide (Fbp-GDFDFDYDK(γE)2-NH2, Comp. 1 ) serving as a supramolecular protein chaperone for protein antigen delivery. The gelation was triggered by simply mixing Comp. 1 and proteins. The vaccine adjuvant potential of Comp. 1 was demonstrated by using two protein antigens, ovalbumin (OVA) and hepatitis B surface antigen (HBsAg). Results: The peptide derivative Comp. 1 exhibited high protein binding capacity. Upon contacting proteins, Comp. 1 rapidly formed coassembled nanofibers/hydrogels with the proteins, which greatly delayed the release of protein antigens. Our supramolecular protein chaperone significantly stimulated specific antibody titers by assisting protein delivery to antigen-presenting cells, promoting dendritic cell (DC) maturation, prolonging antigen accumulation and retention in the lymph nodes, and eliciting the secretion of cytokines. Most importantly, our supramolecular protein chaperone strongly stimulated the cellular immune response and significantly retarded tumor growth. Conclusion: Our study demonstrated the great potential of the supramolecular protein chaperone in protein storage and delivery, vaccine production and tumor immunotherapy.
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Affiliation(s)
- Zhongyan Wang
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, P.R. China
| | - Yuna Shang
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials, Nankai University, Tianjin 300071, P. R. China
| | - Zhaoqi Tan
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials, Nankai University, Tianjin 300071, P. R. China
| | - Xiaoyan Li
- Analysis Center, Nanjing Medical University, Nanjing, Jiangsu 210029, P. R. China
| | - Guoliang Li
- Lab of Functional and Biomedical Nanomaterials, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
| | - Chunhua Ren
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, P.R. China
| | - Fuqiang Wang
- Analysis Center, Nanjing Medical University, Nanjing, Jiangsu 210029, P. R. China
| | - Zhimou Yang
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering, and National Institute of Functional Materials, Nankai University, Tianjin 300071, P. R. China
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, P. R. China
| | - Jianfeng Liu
- Tianjin Key Laboratory of Radiation Medicine and Molecular Nuclear Medicine, Institute of Radiation Medicine, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300192, P.R. China
- Lab of Functional and Biomedical Nanomaterials, College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao, 266042, P. R. China
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26
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Yuan C, Levin A, Chen W, Xing R, Zou Q, Herling TW, Challa PK, Knowles TPJ, Yan X. Nucleation and Growth of Amino Acid and Peptide Supramolecular Polymers through Liquid–Liquid Phase Separation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911782] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Chengqian Yuan
- State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of Sciences Beijing 100190 P. R. China
| | - Aviad Levin
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Wei Chen
- State Key Laboratory of Multiphase Complex SystemsInstitute of Process EngineeringChinese Academy of Sciences Beijing 100190 P. R. China
| | - Ruirui Xing
- State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of Sciences Beijing 100190 P. R. China
| | - Qianli Zou
- State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of Sciences Beijing 100190 P. R. China
| | - Therese W. Herling
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Pavan Kumar Challa
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
| | - Tuomas P. J. Knowles
- Department of ChemistryUniversity of Cambridge Lensfield Road Cambridge CB2 1EW UK
- Cavendish LaboratoryUniversity of Cambridge CB3 0FE Cambridge UK
| | - Xuehai Yan
- State Key Laboratory of Biochemical EngineeringInstitute of Process EngineeringChinese Academy of Sciences Beijing 100190 P. R. China
- Center for MesoscienceInstitute of Process EngineeringChinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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27
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Yuan C, Levin A, Chen W, Xing R, Zou Q, Herling TW, Challa PK, Knowles TPJ, Yan X. Nucleation and Growth of Amino Acid and Peptide Supramolecular Polymers through Liquid-Liquid Phase Separation. Angew Chem Int Ed Engl 2019; 58:18116-18123. [PMID: 31617663 DOI: 10.1002/anie.201911782] [Citation(s) in RCA: 204] [Impact Index Per Article: 40.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2019] [Indexed: 12/17/2022]
Abstract
The transition of peptides and proteins from the solution phase into fibrillar structures is a general phenomenon encountered in functional and aberrant biology and is increasingly exploited in soft materials science. However, the fundamental molecular events underpinning the early stages of their assembly and subsequent growth have remained challenging to elucidate. Here, we show that liquid-liquid phase separation into solute-rich and solute-poor phases is a fundamental step leading to the nucleation of supramolecular nanofibrils from molecular building blocks, including peptides and even amphiphilic amino acids. The solute-rich liquid droplets act as nucleation sites, allowing the formation of thermodynamically favorable nanofibrils following Ostwald's step rule. The transition from solution to liquid droplets is entropy driven while the transition from liquid droplets to nanofibrils is mediated by enthalpic interactions and characterized by structural reorganization. These findings shed light on how the nucleation barrier toward the formation of solid phases can be lowered through a kinetic mechanism which proceeds through a metastable liquid phase.
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Affiliation(s)
- Chengqian Yuan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Aviad Levin
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Wei Chen
- State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Ruirui Xing
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Qianli Zou
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Therese W Herling
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Pavan Kumar Challa
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Tuomas P J Knowles
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK.,Cavendish Laboratory, University of Cambridge, CB3 0FE, Cambridge, UK
| | - Xuehai Yan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,Center for Mesoscience, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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28
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Okesola B, Wu Y, Derkus B, Gani S, Wu D, Knani D, Smith DK, Adams DJ, Mata A. Supramolecular Self-Assembly To Control Structural and Biological Properties of Multicomponent Hydrogels. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2019; 31:7883-7897. [PMID: 31631941 PMCID: PMC6792223 DOI: 10.1021/acs.chemmater.9b01882] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 09/08/2019] [Indexed: 05/07/2023]
Abstract
Self-assembled nanofibers are ubiquitous in nature and serve as inspiration for the design of supramolecular hydrogels. A multicomponent approach offers the possibility of enhancing the tunability and functionality of this class of materials. We report on the synergistic multicomponent self-assembly involving a peptide amphiphile (PA) and a 1,3:2,4-dibenzylidene-d-sorbitol (DBS) gelator to generate hydrogels with tunable nanoscale morphology, improved stiffness, enhanced self-healing, and stability to enzymatic degradation. Using induced circular dichroism of Thioflavin T (ThT), electron microscopy, small-angle neutron scattering, and molecular dynamics approaches, we confirm that the PA undergoes self-sorting, while the DBS gelator acts as an additive modifier for the PA nanofibers. The supramolecular interactions between the PA and DBS gelators result in improved bulk properties and cytocompatibility of the two-component hydrogels as compared to those of the single-component systems. The tunable mechanical properties, self-healing ability, resistance to proteolysis, and biocompatibility of the hydrogels suggest future opportunities for the hydrogels as scaffolds for tissue engineering and drug delivery vehicles.
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Affiliation(s)
- Babatunde
O. Okesola
- Institute
of Bioengineering, Queen Mary University
of London, London E1 4NS, U.K.
- School
of Engineering and Materials Science, Queen
Mary University of London, London E1 4NS, U.K.
| | - Yuanhao Wu
- Institute
of Bioengineering, Queen Mary University
of London, London E1 4NS, U.K.
- School
of Engineering and Materials Science, Queen
Mary University of London, London E1 4NS, U.K.
| | - Burak Derkus
- Institute
of Bioengineering, Queen Mary University
of London, London E1 4NS, U.K.
- School
of Engineering and Materials Science, Queen
Mary University of London, London E1 4NS, U.K.
- Biomedical
Engineering Department, Faculty of Engineering, Eskisehir Osmangazi University, 26040 Eskisehir, Turkey
| | - Samar Gani
- Department
of Biotechnology Engineering, ORT Braude
College, P.O. Box 78, Karmiel 2161002, Israel
| | - Dongsheng Wu
- School
of Engineering and Materials Science, Queen
Mary University of London, London E1 4NS, U.K.
| | - Dafna Knani
- Department
of Biotechnology Engineering, ORT Braude
College, P.O. Box 78, Karmiel 2161002, Israel
| | - David K. Smith
- Department
of Chemistry, University of York, Heslington, York YO10 5DD, U.K.
| | - Dave J. Adams
- School
of
Chemistry, University of Glasgow, Glasgow G12 8QQ, U.K.
| | - Alvaro Mata
- Institute
of Bioengineering, Queen Mary University
of London, London E1 4NS, U.K.
- School
of Engineering and Materials Science, Queen
Mary University of London, London E1 4NS, U.K.
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29
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Jang Y, Hsieh MC, Dautel D, Guo S, Grover MA, Champion JA. Understanding the Coacervate-to-Vesicle Transition of Globular Fusion Proteins to Engineer Protein Vesicle Size and Membrane Heterogeneity. Biomacromolecules 2019; 20:3494-3503. [PMID: 31460745 DOI: 10.1021/acs.biomac.9b00773] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Protein-rich coacervates are liquid phases separate from the aqueous bulk phase that are used by nature for compartmentalization and more recently have been exploited by engineers for delivery and formulation applications. They also serve as an intermediate phase in an assembly path to more complex structures, such as vesicles. Recombinant fusion protein complexes made from a globular protein fused with a glutamic acid-rich leucine zipper (globule-ZE) and an arginine-rich leucine zipper fused with an elastin-like polypeptide (ZR-ELP) show different phases from soluble, through an intermediate coacervate phase, and finally to vesicles with increasing temperature of the aqueous solution. We investigated the phase transition kinetics of the fusion protein complexes at different temperatures using dynamic light scattering and microscopy, along with mathematical modeling. We controlled coacervate growth by aging the solution at an intermediate temperature that supports coacervation and confirmed that the size of the coacervate droplets dictates the size of vesicles formed upon further heating. With this understanding of the phase transition, we developed strategies to induce heterogeneity in the organization of globular proteins in the vesicle membrane through simple mixing of coacervates containing two different globular fusion proteins prior to the vesicle transition. This study gives fundamental insights and practical strategies for development of globular protein-rich coacervates and vesicles for drug delivery, microreactors, and protocell applications.
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Affiliation(s)
- Yeongseon Jang
- School of Chemical and Biomolecular Engineering , Georgia Institute of Technology , 950 Atlantic Drive NW , Atlanta , Georgia 30332 , United States.,Department of Chemical Engineering , University of Florida , 1006 Center Drive , Gainesville , Florida 32611 , United States
| | - Ming-Chien Hsieh
- School of Chemical and Biomolecular Engineering , Georgia Institute of Technology , 950 Atlantic Drive NW , Atlanta , Georgia 30332 , United States.,Department of Chemistry , Emory University , Atlanta , Georgia 30322 , United States
| | - Dylan Dautel
- School of Chemical and Biomolecular Engineering , Georgia Institute of Technology , 950 Atlantic Drive NW , Atlanta , Georgia 30332 , United States
| | - Sherry Guo
- School of Chemical and Biomolecular Engineering , Georgia Institute of Technology , 950 Atlantic Drive NW , Atlanta , Georgia 30332 , United States
| | - Martha A Grover
- School of Chemical and Biomolecular Engineering , Georgia Institute of Technology , 950 Atlantic Drive NW , Atlanta , Georgia 30332 , United States
| | - Julie A Champion
- School of Chemical and Biomolecular Engineering , Georgia Institute of Technology , 950 Atlantic Drive NW , Atlanta , Georgia 30332 , United States
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30
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Barlow DA, Gregus J. The kinetics of homogeneous and two‐step nucleation during protein crystal growth from solution. INT J CHEM KINET 2019. [DOI: 10.1002/kin.21313] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Jan Gregus
- Department of Science and MathematicsAbraham Baldwin Agricultural CollegeTifton Georgia
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31
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Grover MA, Hsieh MC, Lynn DG. Systems Analysis for Peptide Systems Chemistry. Life (Basel) 2019; 9:life9030055. [PMID: 31266164 PMCID: PMC6789875 DOI: 10.3390/life9030055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 06/14/2019] [Accepted: 06/25/2019] [Indexed: 12/21/2022] Open
Abstract
Living systems employ both covalent chemistry and physical assembly to achieve complex behaviors. The emerging field of systems chemistry, inspired by these biological systems, attempts to construct and analyze systems that are simpler than biology, while still embodying biological design principles. Due to the multiple phenomena at play, it can be difficult to predict which phenomena will dominate and when. Conversely, there may be no single rate-limiting step, but rather a reaction network that is difficult to intuit from a purely experimental approach. Mathematical modeling can help to sort out these issues, although it can be challenging to build such models, especially for assembly kinetics. Numerical and statistical methods can play an important role to facilitate the synergistic and iterative use of modeling and experiment, and should be part of a systems chemistry curriculum. Three case studies are presented here, from our work in peptide-based systems, to illustrate some of the tools available for model construction, model simulation, and experimental design. Examples are provided in which these tools help to evaluate hypotheses, uncover design principles, and design new experiments.
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Affiliation(s)
- Martha A Grover
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA.
| | - Ming-Chien Hsieh
- Department of Chemistry, Emory University, Atlanta, GA 30322, USA
| | - David G Lynn
- Department of Chemistry, Emory University, Atlanta, GA 30322, USA.
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32
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Garcia Garcia C, Kiick KL. Methods for producing microstructured hydrogels for targeted applications in biology. Acta Biomater 2019; 84:34-48. [PMID: 30465923 PMCID: PMC6326863 DOI: 10.1016/j.actbio.2018.11.028] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 11/12/2018] [Accepted: 11/19/2018] [Indexed: 12/29/2022]
Abstract
Hydrogels have been broadly studied for applications in clinically motivated fields such as tissue regeneration, drug delivery, and wound healing, as well as in a wide variety of consumer and industry uses. While the control of mechanical properties and network structures are important in all of these applications, for regenerative medicine applications in particular, matching the chemical, topographical and mechanical properties for the target use/tissue is critical. There have been multiple alternatives developed for fabricating materials with microstructures with goals of controlling the spatial location, phenotypic evolution, and signaling of cells. The commonly employed polymers such as poly(ethylene glycol) (PEG), polypeptides, and polysaccharides (as well as others) can be processed by various methods in order to control material heterogeneity and microscale structures. We review here the more commonly used polymers, chemistries, and methods for generating microstructures in biomaterials, highlighting the range of possible morphologies that can be produced, and the limitations of each method. With a focus in liquid-liquid phase separation, methods and chemistries well suited for stabilizing the interface and arresting the phase separation are covered. As the microstructures can affect cell behavior, examples of such effects are reviewed as well. STATEMENT OF SIGNIFICANCE: Heterogeneous hydrogels with enhanced matrix complexity have been studied for a variety of biomimetic materials. A range of materials based on poly(ethylene glycol), polypeptides, proteins, and/or polysaccharides, have been employed in the studies of materials that by virtue of their microstructure, can control the behaviors of cells. Methods including microfluidics, photolithography, gelation in the presence of porogens, and liquid-liquid phase separation, are presented as possible strategies for producing materials, and their relative advantages and disadvantages are discussed. We also describe in more detail the various processes involved in LLPS, and how they can be manipulated to alter the kinetics of phase separation and to yield different microstructured materials.
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Affiliation(s)
- Cristobal Garcia Garcia
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA
| | - Kristi L Kiick
- Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA; Biomedical Engineering, University of Delaware, Newark, DE 19176, USA; Delaware Biotechnology Institute, Newark, DE 19716, USA
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33
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Wilson CJ, Bommarius AS, Champion JA, Chernoff YO, Lynn DG, Paravastu AK, Liang C, Hsieh MC, Heemstra JM. Biomolecular Assemblies: Moving from Observation to Predictive Design. Chem Rev 2018; 118:11519-11574. [PMID: 30281290 PMCID: PMC6650774 DOI: 10.1021/acs.chemrev.8b00038] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Biomolecular assembly is a key driving force in nearly all life processes, providing structure, information storage, and communication within cells and at the whole organism level. These assembly processes rely on precise interactions between functional groups on nucleic acids, proteins, carbohydrates, and small molecules, and can be fine-tuned to span a range of time, length, and complexity scales. Recognizing the power of these motifs, researchers have sought to emulate and engineer biomolecular assemblies in the laboratory, with goals ranging from modulating cellular function to the creation of new polymeric materials. In most cases, engineering efforts are inspired or informed by understanding the structure and properties of naturally occurring assemblies, which has in turn fueled the development of predictive models that enable computational design of novel assemblies. This Review will focus on selected examples of protein assemblies, highlighting the story arc from initial discovery of an assembly, through initial engineering attempts, toward the ultimate goal of predictive design. The aim of this Review is to highlight areas where significant progress has been made, as well as to outline remaining challenges, as solving these challenges will be the key that unlocks the full power of biomolecules for advances in technology and medicine.
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Affiliation(s)
- Corey J. Wilson
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Andreas S. Bommarius
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Julie A. Champion
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Yury O. Chernoff
- School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
- Laboratory of Amyloid Biology & Institute of Translational Biomedicine, St. Petersburg State University, St. Petersburg 199034, Russia
| | - David G. Lynn
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Anant K. Paravastu
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Chen Liang
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Ming-Chien Hsieh
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
| | - Jennifer M. Heemstra
- Department of Chemistry, Emory University, Atlanta, Georgia 30322, United States
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34
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Carballo-Pacheco M, Ismail AE, Strodel B. On the Applicability of Force Fields To Study the Aggregation of Amyloidogenic Peptides Using Molecular Dynamics Simulations. J Chem Theory Comput 2018; 14:6063-6075. [PMID: 30336669 DOI: 10.1021/acs.jctc.8b00579] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Molecular dynamics simulations play an essential role in understanding biomolecular processes such as protein aggregation at temporal and spatial resolutions which are not attainable by experimental methods. For a correct modeling of protein aggregation, force fields must accurately represent molecular interactions. Here, we study the effect of five different force fields on the oligomer formation of Alzheimer's Aβ16-22 peptide and two of its mutants: Aβ16-22(F19V,F20V), which does not form fibrils, and Aβ16-22(F19L) which forms fibrils faster than the wild type. We observe that while oligomer formation kinetics depends strongly on the force field, structural properties, such as the most relevant protein-protein contacts, are similar between them. The oligomer formation kinetics obtained with different force fields differ more from each other than the kinetics between aggregating and nonaggregating peptides simulated with a single force field. We discuss the difficulties in comparing atomistic simulations of amyloid oligomer formation with experimental observables.
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Affiliation(s)
- Martín Carballo-Pacheco
- Institute of Complex Systems: Structural Biochemistry (ICS-6) , Forschungszentrum Jülich GmbH , 52425 Jülich , Germany.,AICES Graduate School , RWTH Aachen University , Schinkelstraße 2 , 52062 Aachen , Germany
| | - Ahmed E Ismail
- AICES Graduate School , RWTH Aachen University , Schinkelstraße 2 , 52062 Aachen , Germany.,Aachener Verfahrenstechnik, Faculty of Mechanical Engineering , RWTH Aachen University , Schinkelstraße 2 , 52062 Aachen , Germany
| | - Birgit Strodel
- Institute of Complex Systems: Structural Biochemistry (ICS-6) , Forschungszentrum Jülich GmbH , 52425 Jülich , Germany.,Institute of Theoretical and Computational Chemistry , Heinrich Heine University Düsseldorf , Universitätstrasse 1 , 40225 Düsseldorf , Germany
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35
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Bai Y, Chotera A, Taran O, Liang C, Ashkenasy G, Lynn DG. Achieving biopolymer synergy in systems chemistry. Chem Soc Rev 2018; 47:5444-5456. [PMID: 29850753 DOI: 10.1039/c8cs00174j] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Synthetic and materials chemistry initiatives have enabled the translation of the macromolecular functions of biology into synthetic frameworks. These explorations into alternative chemistries of life attempt to capture the versatile functionality and adaptability of biopolymers in new orthogonal scaffolds. Information storage and transfer, however, so beautifully represented in the central dogma of biology, require multiple components functioning synergistically. Over a single decade, the emerging field of systems chemistry has begun to catalyze the construction of mutualistic biopolymer networks, and this review begins with the foundational small-molecule-based dynamic chemical networks and peptide amyloid-based dynamic physical networks on which this effort builds. The approach both contextualizes the versatile approaches that have been developed to enrich chemical information in synthetic networks and highlights the properties of amyloids as potential alternative genetic elements. The successful integration of both chemical and physical networks through β-sheet assisted replication processes further informs the synergistic potential of these networks. Inspired by the cooperative synergies of nucleic acids and proteins in biology, synthetic nucleic-acid-peptide chimeras are now being explored to extend their informational content. With our growing range of synthetic capabilities, structural analyses, and simulation technologies, this foundation is radically extending the structural space that might cross the Darwinian threshold for the origins of life as well as creating an array of alternative systems capable of achieving the progressive growth of novel informational materials.
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Affiliation(s)
- Yushi Bai
- Emory University, 1521 Dickey Drive, Atlanta, Georgia 30322, USA.
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36
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Liang C, Hsieh MC, Li NX, Lynn DG. Conformational evolution of polymorphic amyloid assemblies. Curr Opin Struct Biol 2018; 51:135-140. [DOI: 10.1016/j.sbi.2018.04.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 04/02/2018] [Accepted: 04/09/2018] [Indexed: 10/17/2022]
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37
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Mushnoori S, Schmidt K, Nanda V, Dutt M. Designing phenylalanine-based hybrid biological materials: controlling morphology via molecular composition. Org Biomol Chem 2018; 16:2499-2507. [PMID: 29565077 DOI: 10.1039/c8ob00130h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Harnessing the self-assembly of peptide sequences has demonstrated great promise in the domain of creating high precision shape-tunable biomaterials. The unique properties of peptides allow for a building block approach to material design. In this study, self-assembly of mixed systems encompassing two peptide sequences with identical hydrophobic regions and distinct polar segments is investigated. The two peptide sequences are diphenylalanine and phenylalanine-asparagine-phenylalanine. The study examines the impact of molecular composition (namely, the total peptide concentration and the relative tripeptide concentration) on the morphology of the self-assembled hybrid biological material. We report a rich polymorphism in the assemblies of these peptides and explain the relationship between the peptide sequence, concentration and the morphology of the supramolecular assembly.
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Affiliation(s)
- Srinivas Mushnoori
- Department of Chemical and Biochemical Engineering, Robert Wood Johnson Medical School, Rutgers The State University of New Jersey, Piscataway, New Jersey, USA.
| | - Kassandra Schmidt
- Department of Biomedical Engineering, Robert Wood Johnson Medical School, Rutgers The State University of New Jersey, Piscataway, New Jersey, USA
| | - Vikas Nanda
- Center for Advanced Biotechnology and Medicine, Robert Wood Johnson Medical School, Rutgers The State University of New Jersey, Piscataway, New Jersey, USA and Department of Biochemistry and Molecular Biology, Robert Wood Johnson Medical School, Rutgers The State University of New Jersey, Piscataway, New Jersey, USA
| | - Meenakshi Dutt
- Department of Chemical and Biochemical Engineering, Robert Wood Johnson Medical School, Rutgers The State University of New Jersey, Piscataway, New Jersey, USA.
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38
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Chatani E, Yamamoto N. Recent progress on understanding the mechanisms of amyloid nucleation. Biophys Rev 2017; 10:527-534. [PMID: 29214606 DOI: 10.1007/s12551-017-0353-8] [Citation(s) in RCA: 103] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 11/15/2017] [Indexed: 02/08/2023] Open
Abstract
Amyloid fibrils are supramolecular protein assemblies with a fibrous morphology and cross-β structure. The formation of amyloid fibrils typically follows a nucleation-dependent polymerization mechanism, in which a one-step nucleation scheme has widely been accepted. However, a variety of oligomers have been identified in early stages of fibrillation, and a nucleated conformational conversion (NCC) mechanism, in which oligomers serve as a precursor of amyloid nucleation and convert to amyloid nuclei, has been proposed. This development has raised the need to consider more complicated multi-step nucleation processes in addition to the simplest one-step process, and evidence for the direct involvement of oligomers as nucleation precursors has been obtained both experimentally and theoretically. Interestingly, the NCC mechanism has some analogy with the two-step nucleation mechanism proposed for inorganic and organic crystals and protein crystals, although a more dramatic conformational conversion of proteins should be considered in amyloid nucleation. Clarifying the properties of the nucleation precursors of amyloid fibrils in detail, in comparison with those of crystals, will allow a better understanding of the nucleation of amyloid fibrils and pave the way to develop techniques to regulate it.
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Affiliation(s)
- Eri Chatani
- Graduate School of Science, Kobe University, 1-1 Rokkodai, Nada, Kobe, Hyogo, 657-8501, Japan.
| | - Naoki Yamamoto
- Graduate School of Science, Kobe University, 1-1 Rokkodai, Nada, Kobe, Hyogo, 657-8501, Japan
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39
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Hsieh MC, Liang C, Mehta AK, Lynn DG, Grover MA. Multistep Conformation Selection in Amyloid Assembly. J Am Chem Soc 2017; 139:17007-17010. [PMID: 29111722 PMCID: PMC5709775 DOI: 10.1021/jacs.7b09362] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
![]()
Defining pathways
for amyloid assembly could impact therapeutic
strategies for as many as 50 disease states. Here we show that amyloid
assembly is subject to different forces regulating nucleation and
propagation steps and provide evidence that the more global β-sheet/β-sheet
facial complementarity is a critical determinant for amyloid nucleation
and structural selection.
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Affiliation(s)
- Ming-Chien Hsieh
- Georgia Institute of Technology , 311 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Chen Liang
- Emory University , 1521 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Anil K Mehta
- Emory University , 1521 Dickey Drive, Atlanta, Georgia 30322, United States
| | - David G Lynn
- Emory University , 1521 Dickey Drive, Atlanta, Georgia 30322, United States
| | - Martha A Grover
- Georgia Institute of Technology , 311 Ferst Drive NW, Atlanta, Georgia 30332, United States
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